Multifunctional portable hair straightener

Abstract

The multifunctional portable hair straightener comprises a first hair clamping plate and a second hair clamping plate which are connected in a rotating mode, heat conduction metal pipes are arranged at the ends, away from the rotating connection position, of the first hair clamping plate and the second hair clamping plate, and hair clamping planes are arranged on the opposite sides of the two heat conduction metal pipes. The inner walls, located on the two sides above the hair clamping plane, in the heat conduction metal pipe extend inwards to form extending walls, an installation cavity with an axial opening in the upper portion is formed between the extending walls and the hair clamping plane, a heating body attached to the hair clamping plane is arranged in the installation cavity, a positioning piece is arranged on the heating body, and two bent elastic pieces are arranged on the positioning piece. The two bent elastic pieces are elastically attached to the side wall of the axial opening to enable the heating body to be attached to the hair clamping plane, and wire positioning channels are formed in the positions, located on the two sides above the extending wall, in the heat conduction metal pipe. According to the multifunctional portable hair straightener, the heating body can be conveniently installed and positioned, the wire can be positioned, and short circuit caused by the fact that the wire makes contact with the heating body accidentally and is melted is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair straighteners, in particular to a multifunctional portable hair straightener. Background Art

[0002] A hair straightener is a hairdressing tool, a commonly used device for straightening and straightening hair. Existing hair straighteners generally include two rotatably connected hairpins, and heat-conducting metal surfaces are provided on the opposite surfaces of the two hairpins, and a heating element is provided in at least one of the hairpins. The heat generated by the heating element is conducted to the heat-conducting metal surface, and the hair is clamped between the two hairpins and the heat generated by the heating element is used to drag the hair, so as to straighten or straighten the hair.

[0003] The heater is usually fixed to the hairpin by tightening screws, which makes it difficult to install. A portable hair straightener has a battery in one of the hairpins, and the heater is connected to the battery through a wire. Since the heater itself has a high temperature and the wire lacks positioning, if the wire directly contacts the heater, the wire surface may melt, resulting in a short circuit and a safety accident. Summary of the invention

[0004] The utility model aims at the deficiencies of the prior art and provides a multifunctional portable hair straightener, which can facilitate the installation and positioning of a heating body and can position a wire to prevent the wire from accidentally contacting the heating body and melting to cause a short circuit.

[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions: a multifunctional portable hair straightener, comprising a first hair clamping plate and a second hair clamping plate which are rotatably connected, a heat-conducting metal tube being provided at one end of the first hair clamping plate and the second hair clamping plate which are away from the rotating connection, a hair clamping plane being provided at one side opposite to the two heat-conducting metal tubes, an inner wall on both sides of the heat-conducting metal tube located above the hair clamping plane is provided with an extension wall extending inwardly, a mounting cavity with an axial opening on the upper side is formed between the extension wall and the hair clamping plane, a heating body which is in contact with the hair clamping plane is provided in the mounting cavity, a positioning sheet is provided on the heating body, two bent elastic sheets are provided on the positioning sheet, the two bent elastic sheets elastically fit the side walls of the axial opening respectively to fit the heating body to the hair clamping plane, positioning strips are extended inwardly from the inner walls on both sides of the heat-conducting metal tube located above the extension wall, a wire positioning channel with an axial strip opening facing inwardly is formed between the positioning strip and the extension wall, and the height of the strip opening is less than the diameter of the wire positioning channel.

[0006] In the above technical solution, preferably, the inner wall of the hair clamping plane is provided with supporting ribs for supporting the extending wall.

[0007] In the above technical solution, preferably, a circuit board is arranged in the first hairpin plate, a battery is arranged in the second hairpin plate, the second hairpin plate protrudes toward the first hairpin plate, and the battery is connected to the circuit board through a wire.

[0008] In the above technical solution, preferably, the first hairpin plate and the second hairpin plate are both provided with a connecting piece at one end away from the rotating connection, the connecting piece is provided with a sleeve portion matching the inner wall of the heat-conducting metal tube, the heat-conducting metal tube is sleeved and fixed on the sleeve portion, and the connecting piece is provided with a wire hole for passing the wire.

[0009] In the above technical solution, preferably, an elastic member is arranged between the opposite surfaces of the first hairpin plate and the second hairpin plate, two first annular connecting parts are arranged in parallel on the side of the first hairpin plate facing the second hairpin plate, and two second annular connecting parts are arranged in parallel on the side of the second hairpin plate facing the first hairpin plate, the two second annular connecting parts are located on the outer sides of the two first annular connecting parts, at least two arcuate grooves around the rotation center are arranged on the outward side surfaces of the two first annular connecting parts, and at least two limiting protrusions facing the arcuate groove are arranged on the second annular connecting part, the limiting protrusions are embedded in the arcuate groove, and the limiting protrusions are abutted against the side walls of the arcuate groove to limit the maximum deployment angle of the first hairpin plate and the second hairpin plate.

[0010] In the above technical solution, preferably, at least two through holes are arranged around the rotation center of the two second annular connecting parts, and positioning covers are arranged on the outer sides of the two second annular connecting parts. At least two hooks are arranged on the positioning covers, and the hooks pass through the through holes to hook the second annular connecting parts to fix the positioning covers on the second annular connecting parts, and the limiting protrusion is arranged at the bottom of the hooks.

[0011] In the above technical solution, preferably, the hook includes an extension rod passing through the through hole, and a hook portion extending on the extension rod in a direction away from the rotation center.

[0012] In the above technical solution, preferably, a guiding inclined surface is provided at the bottom of the hook portion.

[0013] In the above technical solution, preferably, an axial hole is provided at the rotation center of the two first annular connecting parts and the two second annular connecting parts, and a central axis is passed through the axial hole.

[0014] In the above technical solution, preferably, a limiting cap larger than the shaft hole is provided at one end of the central shaft.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the multifunctional portable hair straightener can facilitate the installation and positioning of the heating body. During installation, the heating body can be slid along the installation cavity into a suitable position by squeezing the two bent elastic sheets toward the middle, and the heating body can be positioned at the position by loosening the bent elastic sheets. The wire positioning channel can position the wire to prevent the wire from accidentally contacting the heating body and melting to cause a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0017] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0018] Figure 3 It is a schematic structural diagram of the first hairpin plate in the embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of the exploded structure of the first hairpin plate in the embodiment of the utility model.

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the first hairpin plate in the embodiment of the utility model.

[0021] Figure 6 It is a schematic structural diagram of the second hairpin plate in the embodiment of the utility model.

[0022] Figure 7 It is a schematic cross-sectional structural diagram of an embodiment of the utility model.

[0023] Figure 8 It is a schematic cross-sectional structure diagram of another direction of an embodiment of the utility model.

[0024] Fig. 9 It is a structural schematic diagram of the positioning cover in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 9A multifunctional portable hair straightener comprises a first hair clamping plate 1 and a second hair clamping plate 2 which are rotatably connected. A heat-conducting metal tube 10 is arranged at one end of the first hair clamping plate 1 and the second hair clamping plate 2 which are away from the rotatable connection. A hair clamping plane 101 is arranged at one side opposite to the two heat-conducting metal tubes 10. An extension wall 102 is extended inwardly from the inner wall on both sides above the hair clamping plane 101 in the heat-conducting metal tube 10. An installation cavity 103 with an axial opening on the upper side is formed between the extension wall 102 and the hair clamping plane 101. A heat-conducting metal tube 103 is arranged in the installation cavity 103 so as to be aligned with the hair clamping plane 101. The heater 104 is fitted, and a positioning piece 105 is provided on the heater 104. Two bent elastic pieces 106 are provided on the positioning piece 105. The two bent elastic pieces 106 elastically fit the side walls of the axial opening respectively to fit the heater 104 to the hair clamping plane 101. Positioning strips 107 extend inward from the inner walls on both sides above the extension wall 102 in the heat-conducting metal tube 10. A wire positioning channel 108 with an axial strip opening facing inward is formed between the positioning strip 107 and the extension wall 102. The height of the strip opening is less than the diameter of the wire positioning channel 108. This multifunctional portable hair straightener can facilitate the installation and positioning of the heater. During installation, the heater 106 can be slid into a suitable position along the installation cavity 103 by squeezing the two bent elastic pieces 106 toward the middle. The heater 106 can be positioned at the position by loosening the bent elastic piece 106. The wire positioning channel 108 can position the wire to prevent the wire from accidentally contacting the heater 106 and melting to cause a short circuit.

[0026] In this embodiment, in order to increase the strength of the extending wall 102 , the inner wall of the hair clamping plane 101 is provided with supporting ribs 109 for supporting the extending wall 102 .

[0027] In this embodiment, a circuit board is disposed in the first hairpin plate 1, a battery is disposed in the second hairpin plate 2, the second hairpin plate 2 protrudes toward the first hairpin plate 1, and the battery and the circuit board are connected by a wire. By protruding the second hairpin plate 2 toward the first hairpin plate 1, a larger battery can be installed in the second hairpin plate 2, thereby increasing the use time.

[0028] In this embodiment, the ends of the first hairpin plate 1 and the second hairpin plate 2 away from the rotating connection are both provided with a connector 110, which is fixed to the ends of the first hairpin plate 1 and the second hairpin plate 2 by screws, and the connector 110 is provided with a sleeve portion 111 matching the inner wall of the heat-conducting metal tube 10, and the heat-conducting metal tube 10 is sleeved and fixed on the sleeve portion 111, and a wire hole 112 for passing a wire is provided on the connector 110. This structure facilitates the installation of the heat-conducting metal tube 10.

[0029] In this embodiment, an elastic member 3 is provided between the opposing surfaces of the first hairpin plate 1 and the second hairpin plate 2, two first annular connecting portions 4 are provided in parallel on the side of the first hairpin plate 1 facing the second hairpin plate 2, two second annular connecting portions 5 are provided in parallel on the side of the second hairpin plate 2 facing the first hairpin plate 1, the two second annular connecting portions 5 are located on the outside of the two first annular connecting portions 4, two arcuate grooves 41 surrounding the rotation center are provided on the outward side surfaces of the two first annular connecting portions 4, two limiting protrusions 611 facing the arcuate groove 41 are provided on the second annular connecting portion 5, the limiting protrusions 611 are embedded in the arcuate groove 41, and the limiting protrusions 611 abut against the side walls of the arcuate groove 41 to limit the maximum unfolding angle of the first hairpin plate 1 and the second hairpin plate 2. When assembling the first hairpin plate 1 and the second hairpin plate 2 of the multifunctional portable hair straightener, the limiting protrusion 611 on the second annular connecting part 5 is embedded in the arc groove 41 on the first annular connecting part 4 to complete the assembly, so as to realize the rotational connection between the first hairpin plate 1 and the second hairpin plate 2. The assembly is convenient. When the first hairpin plate 1 and the second hairpin plate 2 are opened by the elastic force of the elastic member 3, the limiting protrusion 611 is abutted against the side wall of the arc groove 41 to limit the maximum expansion angle. The limiting is realized without the contact between the ends of the two hairpin plates, thereby avoiding the wear caused by the contact between the two hairpin plates after long-term use. The limiting protrusion 41 and the arc groove 41 are not visible from the outside, so as to improve the aesthetics after long-term use. The wire connecting the battery and the circuit board passes through between the two second annular connecting parts 5.

[0030] In this embodiment, two through holes 51 are arranged opposite to each other on the two second annular connecting parts 5 around the rotation center, and a positioning cover 6 is arranged on the outer side of the two second annular connecting parts 5. Two hooks 61 are arranged on the positioning cover 6. The two hooks 61 pass through the through holes 51 in a one-to-one correspondence and hook the second annular connecting parts 5 to fix the positioning cover 6 on the second annular connecting parts 5. A limiting protrusion 611 is arranged at the bottom of the hook 61. This structure makes it easy to form the limiting protrusion 611 of the positioning cover 6 and facilitates installation.

[0031] In this embodiment, specifically, the hook 61 includes an extension rod 612 passing through the through hole 51 , and a hook portion 613 extending from the extension rod 612 in a direction away from the rotation center.

[0032] In this embodiment, in order to facilitate the insertion of the hook 61 into the through hole 51, a guiding slope 614 is provided at the bottom of the hook portion 613. During insertion, the hook 61 is naturally bent due to the guidance of the guiding slope 614. After passing through the through hole 51, the hook 61 automatically pops open to fix the positioning cover 6 on the second annular connecting portion 5.

[0033] Of course, it is easy for those skilled in the art to understand that the limiting protrusion 611 can also be formed in other structures, for example, directly integrally formed with the second annular connecting portion 5. During installation, the limiting protrusion 611 can also be embedded in the arc groove 41 through the deformation of the first annular connecting portion 4 and the second annular connecting portion 5.

[0034] In this embodiment, in order to make the rotational connection between the first hairpin plate 1 and the second hairpin plate 2 more stable, an axial hole is provided at the rotation center of the two first annular connecting parts 4 and the two second annular connecting parts 5, and a central axis 9 is passed through the axial hole, and both ends of the central axis 9 are limited by positioning covers 6.

[0035] In this embodiment, a limiting cap 91 larger than the shaft hole is provided at one end of the central shaft 9. This is to facilitate positioning of the central shaft 9 after it passes through the shaft hole during installation, and facilitate subsequent assembly.

[0036] In this embodiment, a cylindrical extension portion 21 is provided on the side of the second hairpin plate 2 facing the first hairpin plate 1, and the cylindrical extension portion 21 penetrates into the matching hole 11 of the first hairpin plate 1. An elastic member 3 is provided in the cylindrical extension portion 21, and one end of the elastic member 3 abuts against the inner wall of the first hairpin plate 1, and the other end of the elastic member 3 abuts against the bottom end of the cylindrical extension portion 21. When the first hairpin plate 1 and the second hairpin plate 2 are at the maximum deployment angle, the cylindrical extension portion 21 is inserted into the matching hole 11. With this structure, the elastic member 3 is always blocked by the cylindrical extension portion 21, which can not only position the elastic member 3 but also prevent the elastic member from being exposed and affecting the appearance.

[0037] In this embodiment, the elastic member 3 is a spring, and a limiting column 22 is provided on the side of the inner wall of the second hairpin plate 2 opposite to the matching hole, and the spring is sleeved on the limiting column 22. This structure is used to further prevent the elastic member from deflecting.

[0038] A power switch 7 is provided on the first hairpin plate 1 and / or the second hairpin plate 2, and a regulating switch 8 for adjusting the current is provided on the first hairpin plate 1 and / or the second hairpin plate 2. In this embodiment, the power switch 7 and the regulating switch 8 are both provided on the first hairpin plate 1, the main power can be turned on by the power switch 7, and the heating temperature on the two hairpin plates can be adjusted by the regulating switch 8.

[0039] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional portable hair straightener, comprising a first hair clamping plate (1) and a second hair clamping plate (2) which are rotatably connected, characterized in that: A heat-conducting metal tube (10) is provided at one end of the first hair clamping plate (1) and the second hair clamping plate (2) away from the rotating connection. A hair clamping plane (101) is provided on one side opposite to the two heat-conducting metal tubes (10). An extension wall (102) extends inward from the inner wall on both sides above the hair clamping plane (101) in the heat-conducting metal tube (10). An installation cavity (103) having an axial opening at the top is formed between the extension wall (102) and the hair clamping plane (101). A heating body (104) is provided in the installation cavity (103) and is in contact with the hair clamping plane (101). The heating body (104) A positioning piece (105) is provided on the positioning piece (105), and two bent elastic pieces (106) are provided on the positioning piece (105), and the two bent elastic pieces (106) elastically fit the side walls of the axial opening respectively to fit the heating body (104) to the hair clamping plane (101), and positioning strips (107) are provided on the inner walls on both sides above the extension wall (102) in the heat-conducting metal tube (10) and extending inwardly, and a wire positioning channel (108) with an axial strip opening facing inward is formed between the positioning strip (107) and the extension wall (102), and the height of the strip opening is less than the diameter of the wire positioning channel (108).

2. A multifunctional portable hair straightener as claimed in claim 1, characterized in that: The inner wall of the hair clamping plane (101) is provided with supporting ribs (109) for supporting the extension wall (102).

3. A multifunctional portable hair straightener as claimed in claim 1, characterized in that: A circuit board is arranged in the first hairpin plate (1), a battery is arranged in the second hairpin plate (2), the second hairpin plate (2) protrudes towards the first hairpin plate (1), and the battery is connected to the circuit board via a wire.

4. A multifunctional portable hair straightener as claimed in claim 1, characterized in that: A connecting piece (110) is provided at one end of the first hairpin plate (1) and the second hairpin plate (2) away from the rotating connection. The connecting piece (110) is provided with a sleeve portion (111) matching the inner wall of the heat-conducting metal tube (10). The heat-conducting metal tube (10) is sleeved and fixed on the sleeve portion (111). The connecting piece (110) is provided with a wire hole (112) for passing a wire.

5. A multifunctional portable hair straightener as claimed in claim 1, characterized in that: An elastic member (3) is provided between the opposing surfaces of the first hairpin plate (1) and the second hairpin plate (2); two first annular connecting portions (4) are provided in parallel on a side of the first hairpin plate (1) facing the second hairpin plate (2); two second annular connecting portions (5) are provided in parallel on a side of the second hairpin plate (2) facing the first hairpin plate (1); the two second annular connecting portions (5) are located outside the two first annular connecting portions (4); at least two arc-shaped grooves (41) are provided on the outwardly facing side surfaces of the two first annular connecting portions (4) around the rotation center; at least two limiting protrusions (611) are provided on the second annular connecting portion (5) facing the arc-shaped groove (41); the limiting protrusions (611) are embedded in the arc-shaped groove (41); the limiting protrusions (611) abut against the side walls of the arc-shaped groove (41) to limit the maximum unfolding angle of the first hairpin plate (1) and the second hairpin plate (2).

6. A multifunctional portable hair straightener as claimed in claim 5, characterized in that: The two second annular connecting parts (5) are provided with at least two through holes (51) around the rotation center, and the outer sides of the two second annular connecting parts (5) are provided with positioning covers (6), and the positioning covers (6) are provided with at least two hooks (61), and the hooks (61) pass through the through holes (51) to hook the second annular connecting parts (5) to fix the positioning covers (6) on the second annular connecting parts (5), and the bottom of the hooks (61) is provided with the limiting protrusion (611).

7. A multifunctional portable hair straightener as claimed in claim 6, characterized in that: The hook (61) comprises an extension rod (612) passing through the through hole (51), and a hook portion (613) extending on the extension rod (612) in a direction away from the rotation center.

8. A multifunctional portable hair straightener as claimed in claim 7, characterized in that: A guiding inclined surface (614) is provided at the bottom of the hook portion (613).

9. A multifunctional portable hair straightener as claimed in claim 5, characterized in that: The two first annular connecting parts (4) and the two second annular connecting parts (5) are provided with axial holes at their rotation centers, and a central shaft (9) is passed through the axial holes.

10. A multifunctional portable hair straightener as claimed in claim 9, characterized in that: One end of the central shaft (9) is provided with a limiting cap (91) that is larger than the shaft hole.

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