A straightening iron with automatic steam regulation

Abstract

The application discloses a straightening iron capable of automatically adjusting steam quantity, which comprises a handle, an upper clamping plate with a heating device arranged on the handle, a movable frame rotatably connected to the handle, a mounting seat connected to the movable frame, a sliding slot arranged on one side of the mounting seat, a lower clamping plate slidably arranged in the sliding slot and provided with a spring, a steam generating cavity arranged on the upper clamping plate, a plurality of steam outlets arranged at the bottom of the steam generating cavity, a heating element arranged in the steam generating cavity, a guide rod arranged through the side wall of the steam generating cavity, a press switch arranged on the guide rod and aligned with the lower clamping plate, a reset spring arranged between the press switch and the side wall of the guide hole, and a water discharge quantity adjusting mechanism arranged at one end of the guide rod in the steam generating cavity. The straightening iron capable of automatically adjusting steam quantity can automatically start a water pump when hair is clamped, and automatically adjust the steam discharge quantity according to the clamped hair quantity.

Description

Technical Field

[0001] This invention belongs to the field of hair straightener technology, specifically a hair straightener that automatically adjusts the amount of steam. Background Technology

[0002] A hair straightener is a high-temperature electronic product used to straighten hair. It consists of two plates, usually hinged together. The plates are made of metal or ceramic plates with good thermal conductivity. Each plate has a heating element that conducts heat to the surface of the plates. The surface temperature is generally set uniformly between 180-300℃. To straighten hair, the plates are first heated, then the hair is clamped between the plates, and the plates are dragged along the direction of the hair. The high temperature straightens and styles the hair.

[0003] Existing hair straighteners use heat to process hair. If the hair is dry, the straightener will not only fail to achieve the desired effect but may also damage the hair. Therefore, existing technologies have also developed hair straighteners that can spray water vapor during the hair processing. This allows the hair to contain a certain amount of moisture, preventing damage during the heating process and improving the processing speed and styling effect.

[0004] Existing hair straighteners or curling irons with steam jet humidification functions generally spray steam directly and cannot automatically adjust the amount of steam according to the amount of hair clamped. This results in the hair being too wet when the amount of hair clamped is small, leading to poor heating effect, and the hair being too dry when the amount of hair clamped is large, leading to hair damage. It is impossible to achieve automatic adjustment of the amount of steam according to the amount of hair clamped. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a hair straightener that automatically adjusts the amount of steam emitted based on the amount of hair clamped, thus maintaining the hair's moisture at a suitable level. This avoids both excessive steam release leading to overly wet hair and poor heat setting, and insufficient steam release leading to overly dry hair, which can damage the hair or result in poor styling.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic steam-regulating hair straightener, comprising a handle, an upper clamp plate with a heating device mounted on the handle, and a movable frame rotatably connected to the handle; a mounting base integrally connected to the movable frame, with a sliding groove on one side of the mounting base; a lower clamp plate, one end of which is slidably disposed within the sliding groove, with a spring for supporting the lower clamp plate disposed within the sliding groove; and a steam generating chamber located on the upper clamp plate, with several steam outlets at the bottom of the steam generating chamber, the steam generating chamber connected to the outlet pipe of a water pump, and the inlet pipe of the water pump connected to a water tank. A heating element is installed inside the steam generating chamber; a guide rod is provided, and a guide hole is provided on the side wall of the steam generating chamber. The guide rod is movably disposed in the guide hole. A push-button switch is provided at the end of the guide rod located outside the steam generating chamber to control the water pump. The push-button switch is aligned with the lower clamping plate. A return spring is provided between the push-button switch and the side wall of the guide hole; a water output regulating mechanism is provided at the end of the guide rod located inside the steam generating chamber. The water output regulating mechanism reduces the water output of the outlet pipe as the length of the guide rod extending into the steam generating chamber increases. This type of hair straightener with automatic steam regulation activates a water pump when the hair is clamped. The lower plate presses against a switch to start the water pump, which then supplies water to the outlet pipe. The guide rod is also pressed towards the water flow adjustment mechanism. When more hair is clamped, the gap between the upper and lower plates is larger, resulting in a higher water flow rate (more steam). Conversely, when less hair is clamped, the gap is smaller, resulting in a lower water flow rate (less steam). Therefore, the water pump automatically starts when the hair is clamped, and the steam output is automatically adjusted based on the amount of hair clamped. This maintains the hair's moisture at a suitable level, preventing both excessive steam release (leading to overly wet hair and poor styling) and insufficient steam release (leading to overly dry hair and damage or poor styling).

[0007] In the above technical solution, preferably, the water output regulating mechanism includes a return water pipe connected to the side of the water outlet pipe, the return water pipe extending into the water tank, an overflow valve being provided on the return water pipe, a regulating hose being provided at the outlet of the water outlet pipe, and a pushing part being provided at one end of the guide rod located in the steam generating chamber, the pushing part being aligned with the regulating hose. When the movable frame is closed on the handle, the press switch is activated, and the guide rod is pressed inward to squeeze the regulating hose to adjust the water output speed of the regulating hose. As a structure for regulating water flow, when hair is clamped, the lower clamp plate presses against the push switch to start the water pump, causing the pump to supply water to the outlet pipe. The guide rod is also pressed towards the regulating hose, and the pushing part squeezes the regulating hose to reduce its flow rate. As the flow rate decreases, the pressure inside the outlet pipe increases, and excess water flows back to the water tank through the overflow valve. When a large amount of hair is clamped, the return spring is compressed more, resulting in a larger gap between the upper and lower clamp plates. This leads to a larger opening of the regulating hose and a higher water flow rate, i.e., a higher steam output. Conversely, when a small amount of hair is clamped, the return spring is compressed less, resulting in a smaller gap between the upper and lower clamp plates. This leads to a smaller opening of the regulating hose and a lower water flow rate, i.e., a lower steam output. Therefore, the water pump can be automatically started when hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped.

[0008] In the above technical solution, preferably, the water output regulating mechanism includes a sealed housing disposed in the steam generating chamber, a resistance coil disposed in the sealed housing, a guide rod extending into the sealed housing and having a conductive part that fits against the resistance coil, and the resistance coil between the bottom of the resistance coil and the conductive part being connected in series with the water pump. As a structure for regulating water output, when hair is clamped, the lower clamp plate presses against the push switch to start the water pump, causing the water pump to supply water to the outlet pipe. The guide rod is also pressed inwards. The resistance value of the resistance coil between the bottom of the resistance coil and the conductive part increases with the inward movement. When a large amount of hair is clamped, the compression of the return spring is large, resulting in a larger gap between the upper and lower clamp plates. At this time, the resistance value of the resistance coil connected in series with the water pump is small, the water pump power is high, and the water output is large, i.e., the steam output is large. When a small amount of hair is clamped, the compression of the return spring is small, resulting in a smaller gap between the upper and lower clamp plates. At this time, the resistance value of the resistance coil connected in series with the water pump is large, the water pump power is low, and the water output is small, i.e., the steam output is small. Therefore, the water pump can be automatically started when hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped.

[0009] In the above technical solution, preferably, the upper clamping plate includes a heating tube, which is cylindrical and fixed to the handle; a first cover plate, one side of which has an arc surface adapted to the heating tube; a second cover plate, one side of which has an arc surface adapted to the heating tube, a heat-conducting plate provided on the second cover plate, an insertion hole provided on one side of the handle, an insertion post provided at one end of the second cover plate adapted to the insertion hole, and channels provided on the second cover plate to match a plurality of steam outlets; a connecting frame, a positioning component for clamping and fixing the first cover plate and the second cover plate or clamping and fixing the first cover plate and the lower clamping plate; and an automatic adjusting steam... The steam-powered hair straightener includes a straightener state and a curling iron state. In the straightener state, the first cover plate and the second cover plate are clamped to the outer periphery of the heating tube by a connecting bracket. The arc surfaces of the first cover plate and the second cover plate are in contact with the heating tube. One side of the heat-conducting plate is in contact with the heating tube, and the other side of the heat-conducting plate is aligned with the lower clamping plate. When the handle is closed with the movable frame, the heat-conducting plate is in contact with the lower clamping plate. In the curling iron state, the second cover plate is removed, and the first cover plate and the lower clamping plate are clamped and positioned by a connecting bracket. The arc surface of the first cover plate is aligned with the heating tube, and the arc surface is in contact with the heating tube when the handle is closed with the movable frame. This steam hair straightener can switch between straightener and curling iron modes. When used as a curling iron, the hair positioning area is also rounded, resulting in a better curling effect than existing straighteners that combine straightening and curling. It avoids the problem of partially straight hair being created when the clamping plate is in a straightening position. Furthermore, when used as a straightener, the lower clamping plate floats due to the elasticity of a spring, and when used as a curling iron, the lower clamping plate and the first cover plate float due to the elasticity of a spring. This prevents the hair from being burned due to being clamped too tightly during operation.

[0010] In the above technical solution, preferably, the first cover plate, the second cover plate, and the lower clamping plate are all provided with a plurality of positioning holes on their sides, and the connecting frame is a rod body, with two positioning protrusions on one side of the rod body for extending into the positioning holes. This structure allows for convenient positioning of the first cover plate and the second cover plate outside the heating tube, or positioning of the first cover plate and the lower clamping plate, facilitating easy assembly, disassembly, and deformation, and ensuring reliable positioning.

[0011] In the above technical solution, preferably, a blocking strip is provided at the top of the mounting base near the slide groove, and the ends of the lower clamping plate and the first cover plate are provided with slots adapted to the blocking strip. This structure allows the blocking strip to limit the lower clamping plate or the first cover plate under the elastic force of the spring, making the positioning more reliable and ensuring positioning accuracy.

[0012] The lower clamping plate has an annular groove on the side near the heating tube, and the first cover plate has an annular protrusion on the side opposite to the arc surface that matches the annular groove. This structure makes the positioning of the lower clamping plate and the first cover plate more reliable and the assembly more convenient.

[0013] In the above technical solution, preferably, the water tank is disposed inside the heating pipe, and the steam generating chamber is formed between the side of the heating pipe near the lower clamp and the water tank. Placing the water tank and steam generating chamber inside the heating pipe saves overall space.

[0014] In the above technical solution, preferably, a U-shaped bracket is fixed to one end of the movable frame, and a column is fixed to the handle. The position of the column is adapted to the U-shaped bracket, and a limiting member is rotatably provided at the top of the column. When the movable frame is closed on the handle, the limiting member is located above the U-shaped bracket. This structure allows the movable frame to be closed on the handle when the hair straightener is not in use. At this time, the limiting member passes through the U-shaped bracket, and by twisting the limiting member, the U-shaped bracket can be blocked and restricted, thus ensuring that the movable frame remains closed on the handle, facilitating storage.

[0015] In the above technical solution, preferably, a side bracket is fixed to the tail of the handle, and an arc-shaped bracket is fixed to one outer wall of the side bracket. An arc-shaped locking plate is slidably connected to one end of the arc-shaped bracket, and an arc-shaped groove for inserting the arc-shaped locking plate is opened at the other end of the arc-shaped bracket. A paddle is provided on the arc-shaped locking plate. With this structure, the arc-shaped locking plate can be moved by moving the paddle, thus opening the arc-shaped bracket and facilitating hanging.

[0016] Compared with the prior art, this invention has the following beneficial effects: When the hair is clamped, the lower clamp plate presses against the switch to start the water pump, causing the water pump to supply water to the outlet pipe. The guide rod is also pressed towards the water volume adjustment mechanism. When more hair is clamped, the distance between the upper and lower clamp plates is larger, resulting in a larger water output from the outlet pipe, i.e., a larger steam output. When less hair is clamped, the distance between the upper and lower clamp plates is smaller, resulting in a smaller water output from the outlet pipe, i.e., a smaller steam output. Therefore, the water pump can be automatically started when the hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped, maintaining the hair's moisture at a suitable level. This avoids both excessive steam release leading to overly wet hair and poor heat setting, and insufficient steam release leading to overly dry hair, which can damage the hair or result in poor styling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the straightener in embodiment 1 of the present invention when the grip and movable frame are closed.

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 for Figure 1 A magnified view of a section at point B in the middle.

[0020] Figure 4 This is a schematic diagram of the structure of the curling iron in embodiment 1 of the present invention when the handle and the movable frame are closed.

[0021] Figure 5 This is a cross-sectional view of the movable frame closed on the handle in Embodiment 1 of the present invention.

[0022] Figure 6 for Figure 5 A magnified view of a portion of the image.

[0023] Figure 7 This is a cross-sectional view of the movable frame and grip when they are open in Embodiment 1 of the present invention.

[0024] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0025] Figure 9 This is a schematic diagram of the structure of the hair straightener in Embodiment 1 of the present invention when the movable frame and grip are open.

[0026] Figure 10 This is an exploded structural diagram of Embodiment 1 of the present invention.

[0027] Figure 11 This is a schematic diagram of the heating tube in Embodiment 1 of the present invention.

[0028] Figure 12 This is a cross-sectional view of the heating tube in Embodiment 1 of the present invention.

[0029] Figure 13 This is a cross-sectional view of the connection between the grip and the heating tube in Embodiment 1 of the present invention.

[0030] Figure 14 This is a cross-sectional view of the movable frame closed on the handle in Embodiment 2 of the present invention.

[0031] Figure 15 for Figure 14 A magnified view of a portion of the image. Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1 to 13Example 1: An automatic steam-regulating hair straightener includes a handle 1 with an upper clamp plate equipped with a heating device. A movable frame 3 is rotatably connected to the handle 1. An elastic element such as a torsion spring or spring can be installed between the movable frame 3 and the handle 1 to allow them to spring apart, depending on product requirements. A mounting base 6 is integrally connected to the movable frame 3, and a groove 61 is provided on one side of the mounting base 6. A lower clamp plate 7 has one end slidably disposed within the groove 61, and a spring 62 is provided within the groove 61 to support the lower clamp plate 7. A steam generating chamber 22 is located on the upper clamp plate, and several steam outlets 24 are provided at the bottom of the steam generating chamber 22. The steam generating chamber 22 is connected to the outlet pipe 912 of a water pump 91. The water pump 91 has an inlet pipe 911 connected to a water tank 21. A heating element 23 is installed in the steam generating chamber 22. A guide rod 94 is provided in the guide hole 93 on the side wall of the steam generating chamber 22. The guide rod 94 is movably installed in the guide hole 93. A push switch 95 is provided at the end of the guide rod 94 outside the steam generating chamber 22 to control the water pump 91 to turn on. The push switch 95 is aligned with the lower clamping plate 7. A return spring 96 is provided between the push switch 95 and the side wall of the guide hole 93. A water output regulating mechanism is provided at the end of the guide rod 94 inside the steam generating chamber 22. The water output regulating mechanism reduces the water output of the outlet pipe 912 as the length of the guide rod 94 extending into the steam generating chamber 22 increases. When the hair is clamped, this type of hair straightener with automatic steam regulation activates the water pump 91 by pressing the lower plate 7 against the push switch 95. This pump supplies water to the outlet pipe 912, and the guide rod 94 is pressed towards the water volume adjustment mechanism. When more hair is clamped, the gap between the upper and lower plates 7 is larger, resulting in a larger water output from the outlet pipe and thus a larger steam output. Conversely, when less hair is clamped, the gap is smaller, resulting in a smaller water output from the outlet pipe 912 and thus a smaller steam output. Therefore, the water pump 91 can be automatically activated when the hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped. This maintains the hair's moisture at a suitable level, preventing both excessive steam release that leads to overly wet hair and poor styling, and insufficient steam release that leads to overly dry hair and damage or poor styling.

[0033] In this embodiment, the water output regulating mechanism includes a return water pipe 913 connected to the side of the water outlet pipe 912. The return water pipe 913 extends into the water tank 21. An overflow valve 914 is provided on the return water pipe 913. A regulating hose 92 is provided at the outlet of the water outlet pipe 912. One end of the guide rod 94 located in the steam generating chamber 22 is provided with a pushing part 97. The pushing part 97 is aligned with the regulating hose 92. When the movable frame 3 is closed on the handle 1, the press switch 95 is connected, and the guide rod 94 is pressed inward to squeeze the regulating hose 92 to regulate the water output speed of the regulating hose 92. When the hair is clamped, the lower clamp 7 presses against the push switch 95 to activate the water pump 91, causing the water pump 91 to supply water to the outlet pipe 912. The guide rod 94 is pressed towards the regulating hose 92, and the pushing part 97 squeezes the regulating hose 92 to reduce its flow rate. As the flow rate decreases, the pressure inside the outlet pipe 912 increases, and excess water flows back to the insulated water tank 21 through the overflow valve 914. When a large amount of hair is clamped, the gap between the lower clamp 7 or the first cover plate 4 and the heating tube 2 is larger, resulting in a larger opening of the regulating hose 92 and a larger water output. When the amount of hair clamped is small, the gap between the lower clamp plate 7 or the first cover plate 4 and the heating tube 2 is small. At this time, the opening of the adjusting hose 92 is small, and the water output is small, that is, the amount of steam is small. Therefore, the water pump 91 can be automatically started when the hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped, so that the humidity of the hair is maintained at a suitable level. This can avoid the hair being too wet due to excessive steam release, resulting in poor heating and styling effect, and also avoid the hair being too dry due to insufficient steam release, resulting in damage to the hair or poor styling effect.

[0034] The upper clamp includes a heating tube 2, a first cover plate 4, and a second cover plate 5. The heating device is the heating tube 2, which is cylindrical and made of ceramic or metal. An electric heating wire is embedded inside the heating tube 2, and heating is controlled by energizing the heating wire. It is fixed to the handle 1. The first cover plate 4 is approximately cuboid, with one side having an arc surface adapted to the heating tube 2. The second cover plate 5 is also approximately cuboid, with one side having an arc surface adapted to the heating tube 2. A heat-conducting plate 51 is provided on the second cover plate 5. An insertion hole 11 is provided on one side of the handle 1, and a insertion post 52 adapted to the insertion hole 11 is provided at one end of the second cover plate 5. Channels 53 matching several steam outlets 24 are provided on the second cover plate 5. The frame 8 is a positioning component used to clamp and fix the first cover plate 4 and the second cover plate 5 or to clamp and fix the first cover plate 4 and the lower clamping plate 7. The hair straightener with automatic steam adjustment includes a straightener state and a curling iron state. In the straightener state, the first cover plate 4 and the second cover plate 5 are clamped to the outer periphery of the heating tube 2 through the connecting frame 8. The arc surfaces of the first cover plate 4 and the second cover plate 5 are in contact with the heating tube 2. One side of the heat-conducting plate 51 is in contact with the heating tube 2, and the other side of the heat-conducting plate 51 is aligned with the lower clamping plate 7. When the handle 1 and the movable frame 3 are closed, the heat-conducting plate 51 is in contact with the lower clamping plate 7. In the curling iron state, the second cover plate 5 is removed, and the first cover plate 4 and the lower clamping plate 7 are clamped and positioned through the connecting frame 8. The arc surface of the first cover plate 4 is aligned with the heating tube 2, and the arc surface is in contact with the heating tube 2 when the handle 1 and the movable frame 3 are closed. This steam hair straightener can switch between straightener and curling iron modes. When used as a curling iron, the hair positioning area is also rounded, resulting in a better curling effect than existing straighteners that combine straightening and curling. It avoids the problem of partially straight hair being created when the clamping plate is in a straightening position. Furthermore, when used as a straightener, the lower clamping plate 7 floats due to the elasticity of spring 62, and when used as a curling iron, the lower clamping plate 7 and the first cover plate 4 float due to the elasticity of spring 62. This prevents the hair from being burned due to being clamped too tightly during operation.

[0035] The first cover plate 4, the second cover plate 5, and the lower clamping plate 7 are all provided with several positioning holes 100 on their sides. The connecting frame 8 is a rod 81, and two positioning protrusions 82 for inserting into the positioning holes 100 are provided on one side of the rod 81. In this embodiment, the second cover plate 5 and the lower clamping plate 7 are each provided with a row of positioning holes 100, and the first cover plate 4 is provided with two rows of positioning holes 100 that respectively cooperate with the row of positioning holes on the second cover plate 5 and the lower clamping plate 7. The connecting frame 8 achieves connection and positioning by laterally inserting the positioning protrusions 82 into one of the positioning holes 100 of the two rows of positioning holes 100. This structure can conveniently position the first cover plate 4 and the second cover plate 5 outside the heating tube 2, that is, as shown in the figure. Figure 1 The hair straightener is positioned as shown; or the first cover plate 4 and the lower clamp plate 7 are positioned as shown. Figure 4The curling iron shown is easy to assemble, disassemble, and deform, and its positioning is reliable.

[0036] A blocking strip 63 is provided at the top of the mounting base 6 near the slide groove 61, and the ends of the lower clamping plate 7 and the first cover plate 4 are provided with slots 64 that are adapted to the blocking strip 63. With this structure, under the elastic force of the spring 62, the blocking strip 63 can limit the lower clamping plate 7 or the first cover plate 4, making the positioning more reliable and ensuring the positioning accuracy.

[0037] The lower clamping plate 7 has an annular groove 71 on the side near the heating tube 2, and the first cover plate 4 has an annular protrusion 41 on the side opposite to the arc surface that matches the annular groove 71. This structure makes the positioning of the lower clamping plate 7 and the first cover plate 4 more reliable and the assembly more convenient.

[0038] A water tank 21 is installed inside the heating tube 2. The water tank 21 is made of heat-insulating material. A steam generating chamber 22 is formed between the side of the heating tube 2 near the lower clamping plate 7 and the water tank 21. Placing the insulated water tank 21 and the steam generating chamber 22 inside the heating tube 2 saves overall space. To facilitate adding water to the insulated water tank 21, a water inlet 211 is provided on the top of the insulated water tank 21. A removable sealing cap 212 is provided on the water inlet 211. The heating tube 2 and the first cover plate 4 are provided with through holes that match the water inlet 211.

[0039] In this embodiment, a U-shaped bracket 31 is fixed to one end of the movable frame 3, and a column 12 is fixed to the handle 1. The position of the column 12 is adapted to the U-shaped bracket 31, and a limiting member 13 is rotatably provided at the top of the column 12. When the movable frame 3 is closed on the handle 1, the limiting member 13 is located above the U-shaped bracket 31. When the hair straightener is not in use, the movable frame 3 is closed on the handle 1. At this time, the limiting member 13 passes through the U-shaped bracket 31. By twisting the limiting member 13, the U-shaped bracket 31 can be blocked and restricted, so that the movable frame 3 can always be closed on the handle 1, which is convenient for storage.

[0040] In this embodiment, a side bracket 14 is fixed to the tail of the handle 1, and an arc-shaped bracket 15 is fixed to one outer wall of the side bracket 14. An arc-shaped locking plate 16 is slidably connected to one end of the arc-shaped bracket 15, and an arc-shaped groove for inserting the arc-shaped locking plate 16 is opened at the other end of the arc-shaped bracket 15. A paddle 17 is provided on the arc-shaped locking plate 16. With this structure, the arc-shaped locking plate 16 can be moved by moving the paddle 17, which opens the arc-shaped bracket 15, thus facilitating hanging.

[0041] See Figures 14 to 15Example 2: A steam straightener with automatic steam volume adjustment. The difference between Example 2 and Example 1 is only in the water output adjustment mechanism. In this example, the water output adjustment mechanism includes a sealed housing 98 fixedly installed in the steam generating chamber 22. A resistance coil 99 is installed in the sealed housing 98. A guide rod 94 extends into the sealed housing 98 and is provided with a conductive part 910 that fits against the resistance coil 99. The resistance coil 99 from the bottom to the conductive part 910 is connected in series with a water pump 91. When the hair is clamped, the lower clamp plate 7 presses against the push switch 95 to start the water pump 91, causing the water pump 91 to supply water to the water outlet pipe 912. The guide rod 94 is also pressed inward. The resistance value of the resistance coil 99 between the bottom of the resistance coil 99 and the conductive part 910 increases as the inward movement distance increases. When a lot of hair is clamped, the distance between the upper and lower clamp plates 7 is larger. At this time, the resistance value of the resistance coil 99 connected in series with the water pump 91 is smaller, the water pump power is higher, and the water output is larger, i.e., the steam output is larger. When a little hair is clamped, the distance between the upper and lower clamp plates 7 is smaller. At this time, the resistance value of the resistance coil 99 connected in series with the water pump 91 is larger, the water pump power is lower, and the water output is smaller, i.e., the steam output is smaller. Therefore, the water pump 91 can be automatically started when the hair is clamped, and the steam output can be automatically adjusted according to the amount of hair clamped.

[0042] Placing the sealed housing 98 inside the steam generating chamber 22 saves space and makes the structure more compact. Moreover, during the steam heating process, since the water pump 91 operates after the heating tube 2 has been heated, and the working temperature after heating is stable, the temperature inside the steam generating chamber 22 is relatively stable. The resistance value of the resistance coil 99 will not change significantly due to changes in the external temperature. This ensures that the resistance value of the resistance coil 99 connected in series with the water pump 91 is stable over a specific length, and also ensures that the power of the water pump 91 is consistent when the distance between the upper clamping plate and the lower clamping plate 7 is the same.

[0043] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A steam straightener that automatically adjusts the amount of steam, characterized in that: Includes a handle (1), on which an upper clamp plate with a heating device is provided, and a movable frame (3) is rotatably connected to the handle (1); a mounting base (6), which is integrally connected to the movable frame (3), and a sliding groove (61) is provided on one side of the mounting base (6); a lower clamp plate (7), one end of which is slidably disposed in the sliding groove (61), and a spring (62) for supporting the lower clamp plate (7) is provided in the sliding groove (61); a steam generating chamber (22), located on the upper clamp plate, and a number of steam outlets (2) are provided at the bottom of the steam generating chamber (22). 4) The steam generating chamber (22) is connected to the outlet pipe (912) of the water pump (91), and the inlet pipe (911) of the water pump (91) is connected to the water tank (21). A heating element (23) is provided inside the steam generating chamber (22); a guide rod (94) is provided on the side wall of the steam generating chamber (22), and the guide rod (94) is movably disposed in the guide hole (93). A push switch (95) is provided at one end of the guide rod (94) outside the steam generating chamber (22) to control the water pump (91) to be turned on. 5) Align the lower clamping plate (7), and a reset spring (96) is provided between the push switch (95) and the side wall of the guide hole (93); water output adjustment mechanism, the guide rod (94) is located in the steam generating chamber (22) and the water output adjustment mechanism is provided at one end. The water output adjustment mechanism reduces the water output of the water outlet pipe (912) as the length of the guide rod (94) extending into the steam generating chamber (22) increases. The water output adjustment mechanism includes a return water pipe (913) connected to the side of the water outlet pipe (912). 3) Insert into the water tank (21), an overflow valve (914) is provided on the return water pipe (913), an adjusting hose (92) is provided at the outlet of the water pipe (912), and a push part (97) is provided at one end of the guide rod (94) located in the steam generating chamber (22). The push part (97) is aligned with the adjusting hose (92). When the movable frame (3) is closed on the handle (1), the press switch (95) is connected, and the guide rod (94) is pressed inward to squeeze the adjusting hose (92) to adjust the water output speed of the adjusting hose (92).

2. A hair straightener with automatic steam regulation as described in claim 1, characterized in that: The water output regulating mechanism includes a sealed housing (98) disposed in the steam generating chamber (22), a resistance coil (99) disposed in the sealed housing (98), a guide rod (94) extending into the sealed housing (98) and having a conductive part (910) that fits against the resistance coil (99), and the resistance coil (99) between the bottom of the resistance coil (99) and the conductive part (910) is connected in series with the water pump (91).

3. A hair straightener with automatic steam regulation as described in claim 1, characterized in that: The upper clamp includes a heating tube (2), which is cylindrical and fixed to the handle (1); a first cover plate (4), one side of which is an arc surface adapted to the heating tube (2); a second cover plate (5), one side of which is an arc surface adapted to the heating tube (2), a heat-conducting plate (51) is provided on the second cover plate (5), an insertion hole (11) is provided on one side of the handle (1), an insertion post (52) adapted to the insertion hole (11) is provided at one end of the second cover plate (5), and a channel (53) matching a plurality of steam outlets (24) is provided on the second cover plate (5); a connecting frame (8), a positioning component for clamping and fixing the first cover plate (4) and the second cover plate (5) or clamping and fixing the first cover plate (4) and the lower clamp plate (7); the hair straightener with automatic steam adjustment includes a hair straightener state and a curling iron state. The straightener is in the following state: the first cover plate (4) and the second cover plate (5) are clamped on the outer periphery of the heating tube (2) by the connecting frame (8). The arc surfaces of the first cover plate (4) and the second cover plate (5) are in contact with the heating tube (2). One side of the heat-conducting plate (51) is in contact with the heating tube (2), and the other side of the heat-conducting plate (51) is aligned with the lower clamping plate (7). When the handle (1) and the movable frame (3) are closed, the heat-conducting plate (51) is in contact with the lower clamping plate (7). The curling iron is in the following state: the second cover plate (5) is removed. The first cover plate (4) and the lower clamping plate (7) are clamped and positioned by the connecting frame (8). The first cover plate (4) is located between the heating tube (2) and the lower clamping plate (7). The arc surface of the first cover plate (4) is aligned with the heating tube (2), and the arc surface is in contact with the heating tube (2) when the handle (1) and the movable frame (3) are closed.

4. A hair straightener with automatic steam regulation as described in claim 3, characterized in that: The first cover plate (4), the second cover plate (5) and the lower clamping plate (7) are provided with a number of positioning holes (100) on their sides. The connecting frame (8) is a rod (81). The rod (81) has two positioning protrusions (82) on one side for extending into the positioning holes (100).

5. A hair straightener with automatic steam regulation as described in claim 3, characterized in that: The mounting base (6) has a blocking strip (63) at the top near the slide groove (61), and the ends of the lower clamping plate (7) and the first cover plate (4) are provided with a snap (64) that matches the blocking strip (63).

6. A hair straightener with automatic steam regulation as described in claim 3, characterized in that: The lower clamping plate (7) has an annular groove (71) on the side near the heating tube (2), and the first cover plate (4) has an annular protrusion (41) on the side opposite to the arc surface that matches the annular groove (71).

7. A hair straightener with automatic steam regulation as described in claim 3, characterized in that: The heating tube (2) is equipped with the water tank (21), and the side of the heating tube (2) near the lower clamping plate (7) forms the steam generating chamber (22) with the water tank (21).

8. A hair straightener with automatic steam regulation as described in claim 1, characterized in that: One end of the movable frame (3) is fixed with a U-shaped bracket (31), and a column (12) is fixed on the handle (1). The position of the column (12) is adapted to the U-shaped bracket (31). A limiting member (13) is rotatably provided at the top of the column (12). When the movable frame (3) is closed on the handle (1), the limiting member (13) is located above the U-shaped bracket (31).

9. A hair straightener with automatic steam regulation as described in claim 1, characterized in that: The handle (1) is fixed with a side bracket (14) at the tail. An arc bracket (15) is fixed on one side of the outer wall of the side bracket (14). An arc plate (16) is slidably connected to one end of the arc bracket (15). An arc groove for inserting the arc plate (16) is opened at the other end of the arc bracket (15). A paddle (17) is provided on the arc plate (16).

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