A straightening iron

Abstract

The utility model belongs to hairdressing technical field especially involves straight curler, including curling part and handle, handle is equipped with opening to curling part one end, is equipped with circuit board and rotating structure in handle, rotating structure is centrally arranged, rotating structure includes motor, pivot, electrode ring and conducting elastic sheet, the output of motor is connected pivot, pivot top is equipped with the mounting plate for installing curling part, pivot is equipped with a plurality of electrode rings interval sleeve, every electrode ring all with corresponding conducting elastic sheet is pasted, a plurality of conducting elastic sheet electricity connects circuit board, curling part includes two symmetrically arranged clamps, the bottom of two clamps is connected with mounting plate, and the inside of clamp is equipped with electric heating element, both clamps one side close to all is equipped with heating plate, and the heating gap is formed between two heating plates, and electric heating element is connected with electrode ring. Curling part and rotating structure form two opposite independent module, and it is convenient to repair. Two clamps symmetrically arranged, make rotating structure stress balance, improve the service life of product.

Description

Technical Field

[0001] This utility model belongs to the field of hair styling technology, and in particular relates to a hair straightener / curler. Background Technology

[0002] A curling iron is a handheld tool used to curl and style hair, typically consisting of a handle and a heated curling head.

[0003] Chinese patent document CN108634527B discloses an integrated curling, cooling, and styling curler, including a handle mechanism. One end of the handle mechanism has a lower clamping mechanism and an upper clamping mechanism that clamps with the lower clamping mechanism. The lower clamping body includes a lower cover body, the end of which has a first connecting part extending into the handle, and the end of the lower cover body has a corresponding second connecting part. When the two are closed, they form a tubular connecting body. This tubular connecting body serves both as a transmission component, directly driven to rotate by a drive mechanism located in the handle, and as a carrier for electrical connection, with a conductive ring sleeved on its exterior to provide power to the heating unit.

[0004] As can be seen from the accompanying drawings, in the aforementioned patent documents, the transmission and conductivity functions are concentrated on a single tubular connecting body, resulting in high integration. This means that if the transmission or conductivity structure fails, the entire lower clamping mechanism may need to be replaced, leading to high maintenance costs. Furthermore, the upper and lower clamping mechanisms are asymmetrically arranged, which can easily generate eccentric forces during rotation, exacerbating the load on the tubular connecting body, affecting rotational balance, and thus impacting the product's lifespan. Utility Model Content

[0005] The purpose of this utility model is to provide a hair straightener / curler that solves the problems of existing hair straighteners, which integrate transmission and electrical functions in a tubular connecting body, resulting in high maintenance costs and easy eccentricity, thus affecting the product's lifespan.

[0006] To achieve the above objectives, this utility model provides a hair straightener / curler, including a curling section and a handle. The handle has an opening at one end facing the curling section. The handle contains a circuit board and a rotating structure, which is centrally located. The rotating structure includes a motor, a rotating shaft, electrode rings, and conductive springs. The output end of the motor is connected to the rotating shaft. The top of the rotating shaft has a mounting plate for mounting the curling section. Multiple electrode rings are spaced apart on the rotating shaft, each electrode ring being in contact with a corresponding conductive spring. The multiple conductive springs are electrically connected to the circuit board. The curling section includes two symmetrically arranged clamps. The bottom of the two clamps is connected to the mounting plate. Each clamp contains a heating element. Heating plates are located on the adjacent sides of the two clamps, forming a heating gap between them. The heating element is electrically connected to the electrode rings.

[0007] Furthermore, the mounting plate is provided with a plurality of first connecting holes, and the clamping plate is provided with corresponding second connecting holes. The clamping plate is locked to the mounting plate by means of a locking member passing through the first connecting holes and the second connecting holes.

[0008] Furthermore, the outer ring of the mounting plate is recessed inward to form a positioning groove, and the bottom of each clamping plate is provided with a connecting part extending toward the other clamping plate. On the same side of the circumference of the mounting plate, the two connecting parts fit together. Each connecting part is provided with a positioning block extending toward the inside of the positioning groove. The two positioning blocks abut against each other in the positioning groove to restrict the movement of the two clamping plates in the horizontal direction.

[0009] Furthermore, both clamping plates are provided with a horizontally penetrating third connecting hole. The two third connecting holes are coaxially arranged, and a locking member passes through the two connected third connecting holes to fix the bottom of the two clamping plates together.

[0010] Furthermore, the rotating shaft has a stepped shaft structure with decreasing outer diameter from top to bottom, and a first bearing, an electrode ring, and a second bearing are sequentially sleeved below the mounting plate. A limiting ring is sleeved on the outer periphery of the first bearing, and a limiting seat is sleeved on the outer periphery of the second bearing. The outer diameter of the mounting plate is larger than the outer diameter of the first bearing. The handle is a cylindrical shell with a larger upper end and a smaller lower end. The limiting ring and the limiting seat are fixed inside the handle.

[0011] Furthermore, a cover is installed at the opening end of the housing, and multiple locking blocks are spaced apart on the outer periphery of the housing. The inner wall of the cover is provided with corresponding locking grooves. The top surface of the cover extends toward the central axis to form an annular plate, and a gap is left between the inner ring of the annular plate and the outer ring of the curling part.

[0012] Furthermore, the bottom surface of the annular plate is provided with multiple ribs, and the bottom surface of the ribs abuts against the top surface of the shell.

[0013] Furthermore, the bottom of the handle is provided with an air inlet, and a fan is provided between the air inlet and the rotating structure, with the axis of the fan parallel to the axis of the handle. The outer peripheral wall of the clamp is provided with multiple inwardly recessed air grooves along the circumferential direction, and the air grooves extend from the bottom end to the top of the clamp. The limiting ring is provided with multiple ventilation holes, and the outer ring of the mounting plate is provided with an inwardly recessed clearance groove to form an airflow channel, so that the airflow flowing through the ventilation holes enters the air groove through the clearance groove.

[0014] The hair straightener / curler provided in this embodiment of the present invention has at least the following technical effects: The electric heating element generates heat when electricity is applied, causing the heating plates to heat up. When straightening hair, place the hair near the scalp into the heating gap formed by the two heating plates, and pull the straightener down towards the ends of the hair to heat and straighten it, thus completing the straight hair style.

[0015] When curling hair, the ends of the hair are placed into the heating gap. The motor starts, driving the shaft to rotate, which in turn rotates the curling section synchronously. This causes the hair to wrap around the outer perimeter of the two clamps, heating and setting the hair within the heating gap. Then, the hair rotates in the opposite direction, detaching it from the heating gap, thus completing the curling style. The conductive springs and electrode rings maintain dynamic elastic contact, ensuring a continuous and stable supply of current from the circuit board to the heating element.

[0016] The rotating structure's shaft and electrode rings form a drive and conductivity module, responsible for power transmission and current delivery. The curling section, a hair styling module, is connected to the rotating structure via a mounting plate, making them two relatively independent modules. If either module malfunctions, its components can be replaced individually, reducing repair costs and time. The symmetrical arrangement of the two clamping plates ensures balanced force on the rotating structure, reducing the possibility of uneven loading and extending the product's lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of a hair straightener / curler provided in an embodiment of the present invention.

[0019] Figure 2 A partial exploded view of the hair straightener / curler provided in this embodiment of the present invention.

[0020] Figure 3 A cross-sectional view of a hair straightener / curler provided in an embodiment of this utility model.

[0021] Figure 4 A partial structural diagram of the rotating structure of the hair straightener / curler provided in this embodiment of the present invention.

[0022] Figure 5 This is a structural diagram showing the connection between the curling section and the rotating shaft of a hair straightener / curler provided in an embodiment of this utility model.

[0023] Figure 6 This is a structural diagram of the clamp plate of the hair straightener / curler provided in an embodiment of the present invention.

[0024] Figure 7 This is a structural diagram of the cover of the hair straightener / curler provided in an embodiment of the present invention.

[0025] In the diagram, 100 is the handle, 110 is the motor, 120 is the shaft, 121 is the mounting plate, 122 is the first connecting hole, 123 is the positioning groove, 124 is the first bearing, 125 is the second bearing, 126 is the limiting ring, 127 is the limiting seat, 128 is the ventilation hole, 129 is the clearance groove, 130 is the electrode ring, 140 is the conductive spring, 150 is the sleeve cover, 151 is the slot, 152 is the annular plate, 153 is the rib, 160 is the locking block, 170 is the fan, and 180 is the circuit board. 200. Curling section; 210. Clamping plate; 211. Electric heating element; 212. Heating plate; 213. Second connecting hole; 214. Third connecting hole; 215. Connecting part; 216. Positioning block; 217. Air channel; 218. Heat insulation component; 219. Spring; 220. Heating gap. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In one embodiment of the hair straightener / curler of this utility model, please refer to... Figures 1 to 7 A hair straightener / curling iron includes a curling section 200 and a handle 100. The handle 100 is a cylindrical shell, wider at the top and narrower at the bottom, with an opening at the top. Inside, there is a circuit board 180 and a rotating structure. The rotating structure is centrally located, with the circuit board 180 positioned beside it. The rotating structure is the core component for rotating and powering the curling section 200. It includes a motor 110, a rotating shaft 120, an electrode ring 130, and conductive springs 140. The output of the motor 110 is connected to the rotating shaft 120 to drive its rotation. The rotating shaft 120 is a stepped shaft structure with its outer diameter decreasing from top to bottom, and its top has a mounting plate 121 for connecting the curling section 200.

[0031] Please refer to Figures 2 to 4 Along its axial direction, the rotating shaft 120 is fitted with a first bearing 124, multiple spaced electrode rings 130, and a second bearing 125 sequentially below the mounting plate 121. The outer periphery of the first bearing 124 is fixed by a limiting ring 126, the outer ring of which is snapped to the inner wall of the handle 100. The outer periphery of the second bearing 125 is fixed within a limiting seat 127, which contains a limiting ring that restricts the second bearing 125. This limiting seat 127 is bolted to the inner wall of the handle 100. The dual bearings form a stable two-point support structure, ensuring the concentricity of the rotating shaft 120, thereby ensuring the smooth high-speed rotation of the curling section 200 and reducing vibration and noise.

[0032] Because the rotating shaft 120 is a stepped shaft, the outer diameter of the top mounting plate 121 is larger than the outer diameter of the first bearing 124. The mounting plate 121, together with the limiting seat 127, restricts the axial displacement of the bearing and electrode ring 130 and other parts. The mounting plate 121, with the largest outer diameter at the top, provides reliable support for the curling part 200, enhancing the stability of the overall structure. Since the rotating structure is centrally located inside the handle 100, and the curling part 200 is symmetrically positioned at the top of the rotating shaft 120, the rotating shaft 120 is subjected to balanced forces, reducing stress concentration caused by off-center loading and effectively extending the lifespan of the straightener / curler. The upper end of the handle 100 is large enough to accommodate the larger outer diameter limiting ring 126 and mounting plate 121, and the larger outer diameter first bearing 124 has a higher load capacity, stably supporting the rotating shaft 120. The lower end of the handle 100 has a smaller space to accommodate the smaller second bearing 125 and limiting seat 127, making the handle 100 structure compact.

[0033] Please refer to Figure 2 and Figure 3 An insulating ring is provided between adjacent electrode rings 130 for axial positioning and to prevent the two electrode rings 130 from contacting each other. Each electrode ring 130 has a corresponding conductive spring 140 on its outer periphery, and the conductive spring 140 has conductive contacts that maintain elastic contact with the electrode ring 130. All conductive springs 140 are electrically connected to the circuit board 180 inside the handle, and the electrode rings 130 are electrically connected to the heating element 211 inside the curling section via leads, forming a stable and reliable circuit between the stationary circuit board 180 and the rotating curling section 200.

[0034] Please refer to Figure 2 and Figure 5 The curling section 200 includes two symmetrically arranged clamping plates 210. The bottoms of the two clamping plates 210 are fastened to the mounting plate 121 at the top of the rotating shaft by bolts. An electric heating element 211 is provided inside each clamping plate 210. A heating plate 212 is provided on the side of each clamping plate 210 that is close to each other. The electric heating element 211 heats up the heating plate 212, creating a heating gap 220 between the two heating plates 212 for clamping the hair. A heat insulation element 218 is also provided between the clamping plate 210 and the heating plate 212. A spring 219 is provided between the clamping plate 210 and the heat insulation element 218. One end of the spring 219 is fixed to the inner wall of the clamping plate 210, and the other end abuts against the heat insulation element 218, providing elastic clamping when the heating plate 212 clamps the hair, ensuring a tight fit between the hair and the heating plate 212.

[0035] Please refer to Figure 5 and Figure 6The mounting plate 121 has multiple through first connecting holes 122, and the bottom of the two clamping plates 210 has corresponding second connecting holes 213. The first connecting holes 122 and the second connecting holes 213 are connected by bolts, so that the clamping plates 210 are locked above the mounting plate 121. The first connecting holes 122 are preferably countersunk holes, so that the bolt nuts are hidden inside the first connecting holes 122.

[0036] The rotating shaft 120 and electrode ring 130 of the rotating structure form a drive and conduction module, which is responsible for power transmission and current delivery. The hair curling part 200 is a styling module, which is connected to the rotating structure through the mounting plate 121, so that the hair curling part 200 and the rotating structure form two relatively independent modules. If the transmission part fails, the rotating shaft structure can be replaced separately without scrapping and replacing the main pipe of the hair curling part 200, thus reducing maintenance costs and time.

[0037] Please refer to Figure 5 The mounting plate 121 has a recessed positioning groove 123 on its outer ring. Each clamping plate 210 has a connecting portion 215 extending towards the other clamping plate 210 at its bottom. On the same side of the mounting plate 121's circumference, the two connecting portions 215 fit together. Each connecting portion 215 has a positioning block 216 extending into the positioning groove 123. The two positioning blocks 216 abut against each other within the same positioning groove 123 and are engaged within it. The cooperation between the positioning blocks 216 and the positioning groove 123 effectively restricts the horizontal movement of the two clamping plates 210, improving the positioning accuracy and connection stability of the curling section 200 and the rotating shaft 120.

[0038] Please refer to Figure 6 Both clamping plates 210 are provided with horizontally penetrating third connecting holes 214. The two third connecting holes 214 are coaxially arranged and are connected laterally by bolts to further fix the bottom of the two clamping plates 210, forming a stable overall structure. The third connecting holes 214 are preferably located in the connecting part 215 at the bottom of the clamping plate.

[0039] Please refer to Figure 7 A cover 150 is installed at the opening of the handle 100 housing. Multiple locking blocks 160 are spaced apart on the outer periphery of the housing 100, and corresponding locking grooves 151 are provided on the inner wall of the cover 150. Quick installation is achieved by engaging the locking blocks 160 with the locking grooves 151. The top surface of the cover 150 extends towards the central axis to form an annular plate 152. A gap is left between the inner ring of the annular plate 152 and the outer ring of the curling section 200. This ensures that the curling section 200 does not interfere with the annular plate 152 when rotating. Multiple ribs 153 are provided on the bottom surface of the annular plate 152. The bottom surface of the ribs 153 abuts against the top surface of the handle 100 housing, enhancing the structural strength and support stability of the cover 150.

[0040] Please refer to Figure 2 and Figure 3 The handle 100 has an air inlet at its bottom, and a fan 170 is located between the air inlet and the rotating structure. The axis of the fan 170 is parallel to the axis of the handle 100. A plurality of vertically penetrating ventilation holes 128 are circumferentially formed on the limiting ring 126. An inwardly recessed clearance groove 129 is provided on the outer periphery of the mounting plate 121, which, together with the ventilation holes 128 on the limiting ring 126, forms an airflow channel. A plurality of inwardly recessed air grooves 217 are provided circumferentially on the outer periphery of the clamping plate 210, extending from the bottom to the top of the clamping plate 210. The clearance groove 129 is located directly below the air grooves 217 on the outer periphery of the clamping plate.

[0041] When the fan 170 is running, airflow enters from the outside, flows sequentially through the inside of the handle 100, the ventilation hole 128, and the clearance groove 129, and finally enters the air channel 217 on the surface of the clamp and is discharged, thereby cooling the curling section 200 and the hair, and removing heat from the internal components of the handle 100. The annular gap between the inner ring of the cover 150 and the outer ring of the curling section 200 reduces the inner diameter of the opening at the top of the handle 100. After passing through the mounting plate 121, the airflow from the fan 170 is blocked and concentrated by the cover 150 and guided into the air channel 217, ensuring that the cooling airflow is concentrated and blown onto the hair efficiently, accelerating cooling and styling.

[0042] The working principle of the hair straightener in this utility model is as follows: When straightening hair, put the hair close to the scalp into the heating gap 220 formed by the two heating plates 212, pull the hair straightener down towards the ends of the hair, heat and straighten the hair to complete the straight hair style.

[0043] When curling hair, the ends of the hair are placed into the heating gap 220. The rotating structure is activated, and the motor 110 drives the rotating shaft 120 to rotate, which in turn drives the curling section 200 to rotate synchronously. This causes the hair to wrap around the outer periphery of the two clamps 210 and be heated and curled. Then the curling section 200 rotates in the opposite direction, allowing the curled hair to come off smoothly.

[0044] During the heating and shaping process, fan 170 works continuously to provide cooling airflow and assist in shaping.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hair straightener / curler, characterized in that, The device includes a curling section and a handle. The handle has an opening at one end facing the curling section. A circuit board and a rotating structure are housed inside the handle, with the rotating structure centrally located. The circuit board is situated beside the rotating structure. The rotating structure includes a motor, a rotating shaft, electrode rings, and conductive springs. The output end of the motor is connected to the rotating shaft. A mounting plate for mounting the curling section is located at the top of the rotating shaft. Multiple electrode rings are spaced apart on the rotating shaft, each electrode ring engaging with a corresponding conductive spring. The multiple conductive springs are electrically connected to the circuit board. The curling section includes two symmetrically arranged clamps. The bottom of the two clamps is connected to the mounting plate. An electric heating element is provided inside the clamp. A heating plate is provided on the side of the two clamps that are close to each other. A heating gap is formed between the two heating plates. The electric heating element is electrically connected to the electrode ring.

2. The hair straightener / curler according to claim 1, characterized in that: The mounting plate is provided with a plurality of first connection holes, and the clamping plate is provided with corresponding second connection holes. The clamping plate is locked to the mounting plate by means of a locking member passing through the first connection holes and the second connection holes.

3. The hair straightener / curler according to claim 2, characterized in that: The outer ring of the mounting plate is recessed inward to form a positioning groove. The bottom of each clamping plate is provided with a connecting part extending toward the other clamping plate. Along the same side of the circumference of the mounting plate, the two connecting parts fit together. Each connecting part is provided with a positioning block extending toward the inside of the positioning groove. The two positioning blocks abut against each other in the positioning groove to restrict the movement of the two clamping plates in the horizontal direction.

4. The hair straightener / curler according to claim 3, characterized in that: Both clamping plates are provided with a horizontally penetrating third connecting hole. The two third connecting holes are coaxially arranged, and a locking member passes through the two connected third connecting holes to fix the bottom of the two clamping plates together.

5. The hair straightener / curler according to any one of claims 1 to 4, characterized in that: The rotating shaft has a stepped shaft structure with the outer diameter decreasing from top to bottom, and a first bearing, an electrode ring, and a second bearing are sequentially sleeved below the mounting plate. A limiting ring is sleeved on the outer periphery of the first bearing, and a limiting seat is sleeved on the outer periphery of the second bearing. The outer diameter of the mounting plate is larger than the outer diameter of the first bearing. The handle is a cylindrical shell with a larger upper end and a smaller lower end. The limiting ring and the limiting seat are fixed inside the handle.

6. The hair straightener / curler according to claim 5, characterized in that: The opening end of the housing is also fitted with a cover. Multiple locking blocks are spaced apart on the outer periphery of the housing. The inner wall of the cover is provided with corresponding locking grooves. The top surface of the cover extends toward the central axis to form an annular plate. A gap is left between the inner ring of the annular plate and the outer ring of the curling part.

7. The hair straightener / curler according to claim 6, characterized in that: The bottom surface of the annular plate is provided with multiple ribs, and the bottom surface of the ribs abuts against the top surface of the shell.

8. The hair straightener / curler according to claim 5, characterized in that: The handle has an air inlet at its bottom, and a fan is provided between the air inlet and the rotating structure. The axis of the fan is parallel to the axis of the handle. The outer peripheral wall of the clamp has multiple inwardly recessed air grooves along its circumference, which extend from the bottom to the top of the clamp. The limiting ring has multiple ventilation holes, and the outer ring of the mounting plate has an inwardly recessed clearance groove to form an airflow channel, allowing the airflow passing through the ventilation holes to enter the air groove through the clearance groove.

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