Portable hair straightener

Abstract

The utility model discloses a portable hair straightener which comprises a first hair clamping plate and a second hair clamping plate which are connected in a rotating mode, an elastic piece is arranged between the opposite faces of the first hair clamping plate and the second hair clamping plate, and two first annular connecting parts are arranged on the side, facing the second hair clamping plate, of the first hair clamping plate in parallel. Two second annular connecting parts are arranged on the side, facing the first hair clip plate, of the second hair clip plate in parallel, the two second annular connecting parts are located on the outer sides of the two first annular connecting parts, and at least two arc-shaped grooves around the rotating center are formed in the outward side faces of the two first annular connecting parts; the second annular connecting part is provided with at least two limiting protrusions facing the arc-shaped groove, the limiting protrusions are embedded into the arc-shaped groove, and the limiting protrusions abut against the side wall of the arc-shaped groove so as to limit the maximum unfolding angle of the first hairpin plate and the second hairpin plate. The rotary joint of the portable hair straightener is simple in structure and convenient to assemble, limiting is achieved without contact of the ends of the two hair clamping plates, and attractiveness after long-term use is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair straighteners, in particular to a 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, with a heating body provided on opposite sides of the hairpins. When in use, the hair is clamped between the two hairpins and the heat emitted by the heating body drags the hair to achieve straightening or straightening of the hair. An existing hair straightener generally has an elastic member between the two hairpins to spring the two hairpins apart. The two hairpins are rotatably connected, and when the two hairpins are opened, the two ends of the two hairpins are contacted to limit the position, forming a fixed maximum expansion angle. The outer surfaces of the two hairpins are generally provided with a decorative layer. After long-term use, the decorative layer at the contact point of the two hairpins will be worn, affecting the aesthetics. Summary of the invention

[0003] The utility model aims at the deficiencies of the prior art and provides a portable hair straightener. The rotating connection of the portable hair straightener has a simple structure and can be easily assembled. There is no need for the ends of two hair clamps to contact to achieve position limiting, thereby avoiding wear due to the contact of the two hair clamps after long-term use, thereby improving the aesthetics after long-term use.

[0004] In order to solve the above technical problems, the utility model is solved by the following technical solutions: a portable hair straightener, comprising two rotatably connected first hair clamp plates and a second hair clamp plate, an elastic member is arranged between the opposite surfaces of the first hair clamp plate and the second hair clamp plate, two first annular connecting parts are arranged in parallel on the side of the first hair clamp plate facing the second hair clamp plate, two second annular connecting parts are arranged in parallel on the side of the second hair clamp plate facing the first hair clamp plate, the two second annular connecting parts are located on the outsides 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, 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 abut against the side walls of the arcuate groove to limit the maximum expansion angle of the first hair clamp plate and the second hair clamp plate.

[0005] 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.

[0006] 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.

[0007] In the above technical solution, preferably, a guiding inclined surface is provided at the bottom of the hook portion.

[0008] 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.

[0009] In the above technical solution, preferably, a limiting cap larger than the shaft hole is provided at one end of the central shaft.

[0010] In the above technical solution, preferably, a cylindrical extension portion is provided on the side of the second hairpin plate facing the first hairpin plate, the cylindrical extension portion is inserted into the matching hole of the first hairpin plate, the elastic member is provided in the cylindrical extension portion, one end of the elastic member abuts against the inner wall of the first hairpin plate, and the other end of the elastic member abuts against the bottom end of the cylindrical extension portion, and when the first hairpin plate and the second hairpin plate are at the maximum expansion angle, the cylindrical extension portion is inserted into the matching hole.

[0011] In the above technical solution, preferably, the elastic member is a spring, a limiting column is provided on a side of the inner wall of the second hairpin plate opposite to the matching hole, and the spring is sleeved on the limiting column.

[0012] In the above technical solution, preferably, a power switch is provided on the first hairpin plate and / or the second hairpin plate, and a regulating switch for adjusting the current is provided on the first hairpin plate and / or the second hairpin plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects: when assembling the first hair clamp plate and the second hair clamp plate of the portable hair straightener, the limiting protrusion on the second annular connecting part is embedded in the arc groove on the first annular connecting part to complete the assembly, so as to realize the rotational connection between the first hair clamp plate and the second hair clamp plate, and the assembly is convenient; when the first hair clamp plate and the second hair clamp plate are sprung apart by the elastic force of the elastic member, the limiting protrusion abuts against the side wall of the arc groove to limit the maximum expansion angle, and the limiting is realized without the contact between the ends of the two hair clamp plates, so as to avoid the wear caused by the contact between the two hair clamp plates after long-term use; and the limiting protrusion and the arc groove are not visible from the outside, so as to improve the aesthetics after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0016] Figure 3 It is a schematic structural diagram of the first hairpin plate in the embodiment of the utility model.

[0017] Figure 4 It is a schematic structural diagram of the second hairpin plate in the embodiment of the utility model.

[0018] Figure 5 It is a schematic cross-sectional view of an embodiment of the utility model.

[0019] Figure 6 It is a schematic cross-sectional structure diagram of another direction of an embodiment of the utility model.

[0020] Figure 7 It is a structural schematic diagram of the positioning cover in the embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 7 A portable hair straightener comprises a first hair clamp plate 1 and a second hair clamp plate 2 which are rotatably connected, an elastic member 3 is arranged between opposite surfaces of the first hair clamp plate 1 and the second hair clamp plate 2, two first annular connecting parts 4 are arranged in parallel on the side of the first hair clamp plate 1 facing the second hair clamp plate 2, two second annular connecting parts 5 are arranged in parallel on the side of the second hair clamp plate 2 facing the first hair clamp plate 1, the two second annular connecting parts 5 are located on the outer sides of the two first annular connecting parts 4, two arc grooves 41 around the rotation center are arranged on the outward side surfaces of the two first annular connecting parts 4, two limiting protrusions 611 facing the arc groove 41 are arranged on the second annular connecting part 5, the limiting protrusions 611 are embedded in the arc groove 41, and the limiting protrusions 611 abut against the side walls of the arc groove 41 to limit the maximum expansion angle of the first hair clamp plate 1 and the second hair clamp plate 2. When assembling the first hair clamp plate 1 and the second hair clamp plate 2 of the 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 hair clamp plate 1 and the second hair clamp plate 2. The assembly is convenient. When the first hair clamp plate 1 and the second hair clamp plate 2 are opened by the elastic force of the elastic member 3, the limiting protrusion 611 abuts 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 hair clamp plates, thereby avoiding the wear of the two hair clamp plates due to the contact after long-term use. In addition, 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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 portable hair straightener, comprising a first hair clamping plate (1) and a second hair clamping plate (2) which are rotatably connected, an elastic member (3) being arranged between the opposing surfaces of the first hair clamping plate (1) and the second hair clamping plate (2), characterized in that: Two first annular connecting parts (4) are arranged in parallel on one side of the first hairpin plate (1) facing the second hairpin plate (2), and two second annular connecting parts (5) are arranged in parallel on one side of the second hairpin plate (2) facing the first hairpin plate (1). The two second annular connecting parts (5) are located outside the two first annular connecting parts (4), and at least two arc-shaped grooves (41) are arranged around the rotation center on the outward side surfaces of the two first annular connecting parts (4). The second annular connecting part (5) is provided with at least two limiting protrusions (611) facing the arc-shaped grooves (41), and the limiting protrusions (611) are embedded in the arc-shaped grooves (41). The limiting protrusions (611) abut against the side walls of the arc-shaped grooves (41) to limit the maximum expansion angle of the first hairpin plate (1) and the second hairpin plate (2).

2. A portable hair straightener as claimed in claim 1, 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).

3. A portable hair straightener as claimed in claim 2, 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.

4. A portable hair straightener as claimed in claim 3, characterized in that: A guiding inclined surface (614) is provided at the bottom of the hook portion (613).

5. A portable hair straightener as claimed in claim 1, 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.

6. A portable hair straightener as claimed in claim 5, characterized in that: One end of the central shaft (9) is provided with a limiting cap (91) that is larger than the shaft hole.

7. A portable hair straightener as claimed in claim 1, characterized in that: A cylindrical extension portion (21) is provided on a side of the second hairpin plate (2) facing the first hairpin plate (1), the cylindrical extension portion (21) penetrates into the matching hole (11) of the first hairpin plate (1), the elastic member (3) is provided in the cylindrical extension portion (21), 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), and when the first hairpin plate (1) and the second hairpin plate (2) are at the maximum unfolding angle, the cylindrical extension portion (21) is inserted into the matching hole (11).

8. A portable hair straightener as claimed in claim 7, characterized in that: The elastic member (3) is a spring, and a limiting column (22) is provided on the inner wall of the second hairpin plate (2) on a side opposite to the matching hole, and the spring is sleeved on the limiting column (22).

9. A portable hair straightener as claimed in claim 1, characterized in that: The first hairpin plate (1) and / or the second hairpin plate (2) are provided with a power switch (7), and the first hairpin plate (1) and / or the second hairpin plate (2) are provided with a regulating switch (8) for regulating the magnitude of current.

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