Temperature control structure of hair clamping plate of hair straightener

Abstract

The utility model discloses a temperature control structure of hairpin plates of a blowing hair straightener, which comprises a handle and hairpin plates hinged on two sides of the handle and arranged oppositely, strip-shaped air outlets communicated with an air delivery cavity are arranged on the hairpin plates, a strip-shaped positioning plate is arranged in the air delivery cavity, a plurality of through holes are arranged on the strip-shaped positioning plate, and the through holes are communicated with the strip-shaped air outlets. A thermistor circuit board is attached to one side of the strip-shaped positioning plate, a plurality of thermistors are arranged on the other side of the strip-shaped positioning plate, wires connected with the same thermistor penetrate through the through holes in pairs, the wires penetrate through the through holes to be welded to the thermistor circuit board, and the wires are bent to clamp and fix the strip-shaped positioning plate and the thermistor circuit board. The thermistor circuit board is clamped between the strip-shaped positioning plate and the inner wall of the air conveying cavity, the side face of the thermistor circuit board extends out of the air conveying cavity, and the extending end is provided with a wiring end electrically connected with the main circuit board. The temperature control structure enables the thermistor circuit board not to be in contact with dust, the strength is enhanced, and meanwhile the sealing performance of the air conveying cavity is easier to guarantee.

Description

Technical Field

[0001] The utility model belongs to the technical field of hair straighteners, in particular to a temperature control structure of a hairpin plate of a hair straightener. Background Art

[0002] A hair straightener is 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. However, the temperature of the heating body of such existing hairpins is often high, which can easily damage the hair during use, causing problems such as dry, yellow, and dehydrated hair. To solve this problem, the applicant has developed a hair straightener that straightens or straightens the hair with hot air, which can effectively avoid the problem of hair damage caused by direct contact of the heating body with the hair.

[0003] In order to control the air outlet temperature, existing hot air outlet devices such as hair dryers generally need to set a thermistor at the air outlet to detect the air outlet temperature in real time, and the main circuit board controls the heating power to ensure the stability of the air outlet temperature. Since the air outlet of the hair straightener is a long strip air outlet connected to the air delivery cavity, in order to ensure that the temperature of the entire air outlet is detected, it is generally necessary to set up multiple thermistors. Therefore, a relatively long thermistor circuit board with multiple thermistors is generally required to be set up on the inner side of the air outlet. The thermistor circuit board must be connected to the main circuit board, and the sealing of the position where the thermistor circuit board extends out of the air delivery cavity must be ensured. In the prior art, the relatively long circuit board is not only low in strength and easy to break during installation and positioning, but also the circuit board is exposed to hot air for a long time, and the dust carried in the hot air will be contaminated on the surface of the circuit board, resulting in its detection accuracy being affected, and the sealing between the circuit board and the air delivery cavity is also difficult to ensure, which may cause a gap between the circuit board and the air delivery cavity for air leakage. Summary of the invention

[0004] The utility model aims at solving the deficiencies in the prior art and provides a temperature control structure for a hairpin plate of a hair straightener.

[0005] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a temperature control structure of a hairpin plate of a hair straightener, comprising a handle and hairpin plates hinged on both sides of the handle and arranged opposite to each other, the handle being provided with an air inlet end and an air outlet end, a main circuit board, a motor and a heating element being arranged in the handle, an air guide elastic member being provided at the air outlet end of the handle, one end of the air guide elastic member being connected to the air outlet end, and the other end being forked into two air guide tubes corresponding to each other and connected to air delivery cavities in the two hairpin plates, a strip air outlet being provided on the hairpin plate and communicating with the air delivery cavity, and a strip positioning plate being provided on one side of the air delivery cavity close to the strip air outlet The strip positioning plate is provided with a plurality of through holes, a thermistor circuit board is provided on one side of the strip positioning plate, and a plurality of thermistors are provided on the other side of the strip positioning plate. The through holes are provided with wires connected to the same thermistor in pairs, and the wires are passed through the through holes and welded to the thermistor circuit board. The wires are bent to clamp the strip positioning plate and the thermistor circuit board, and the thermistor circuit board is clamped between the strip positioning plate and the inner wall of the air delivery cavity. The side of the thermistor circuit board extends out of the air delivery cavity toward the handle, and a wiring terminal is provided at the protruding end, and the wiring terminal is electrically connected to the main circuit board. The temperature control structure of the hairpin of the hair straightener clamps the thermistor circuit board between the strip positioning plate and the inner wall of the air delivery cavity, so that the thermistor circuit board will not be contacted by dust brought by the hot air, and the strength of the thermistor circuit board is enhanced by the strip positioning plate, and it is not easy to break during the installation process. At the same time, the assembly between the strip positioning plate and the air delivery cavity makes it easier to ensure the sealing of the air delivery cavity.

[0006] In the above technical solution, preferably, a plurality of convex columns with the through holes are provided on one side of the strip positioning plate, and the thermistor is supported between two of the convex columns, and there is a flow gap between the thermistor and the inner wall of the air delivery cavity. With this structure, the thermistor is supported by the convex columns, so that the thermistor does not contact the strip positioning plate and the inner wall of the air delivery cavity, so that the temperature detection is more accurate.

[0007] In the above technical solution, preferably, the two hairpin plates include a rotating arm, an air delivery shell and an air guide plate, the air delivery shell is clamped between the rotating arm and the air guide plate, the air delivery shell and the air guide plate are assembled to form the air delivery cavity and the strip air outlet, and the air inlet end of the air delivery cavity is connected to the air guide tube.

[0008] In the above technical solution, preferably, two positioning parts are provided on the air delivery housing on one side close to the strip-shaped air outlet, the strip-shaped positioning plate is embedded between the two positioning parts, and an opening is provided on the positioning part close to the handle side, and the thermistor circuit board extends out of the air delivery cavity from the opening. This structure is used to facilitate the positioning of the strip-shaped positioning plate.

[0009] In the above technical solution, preferably, a closed installation space is formed between the strip positioning plate and the air delivery housing, and the side of the thermistor circuit board located in the air delivery cavity is arranged in the installation space. This structure is used to further completely seal the thermistor circuit board located in the air delivery cavity, thereby preventing the thermistor circuit board from contacting dust.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the temperature control structure of the hairpin plate of the hair straightener clamps the thermistor circuit board between the strip positioning plate and the inner wall of the air delivery cavity, so that the thermistor circuit board will not be contacted by dust brought by the hot air, and the strength of the thermistor circuit board is enhanced by the strip positioning plate, so it is not easy to break during the installation process, and at the same time, the assembly between the strip positioning plate and the air delivery cavity makes it easier to ensure the sealing of the air delivery cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0012] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0013] Figure 3 It is a schematic structural diagram of a hairpin plate in an embodiment of the utility model.

[0014] Figure 4 It is a schematic diagram of the exploded structure of the hairpin plate in the embodiment of the utility model.

[0015] Figure 5 It is a schematic cross-sectional structure diagram of a hair clamp plate in an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 5A temperature control structure of a hair clip plate of a hair straightener comprises a handle 1 and hair clip plates 2 which are hingedly connected to the handle 1 and are arranged opposite to each other on both sides. The handle 1 is provided with an air inlet end and an air outlet end. A main circuit board 3, a motor and a heating element are arranged in the handle 1. An air guide elastic member 4 is arranged at the air outlet end of the handle 1. One end of the air guide elastic member 4 is connected to the air outlet end, and the other end is forked into two air guide tubes 41 which are connected to the air delivery cavities 24 in the two hair clip plates 2 in a one-to-one correspondence. A strip air outlet 26 which is connected to the air delivery cavity 24 is arranged on the hair clip plate 2. A strip positioning plate 29 is arranged on one side of the air delivery cavity 24 near the strip air outlet 26. A plurality of through holes are arranged on the strip positioning plate 29. A thermistor circuit board 292 is fitted on one side of the strip positioning plate 29, and a plurality of thermistors 293 are arranged on the other side of the strip positioning plate 29. Wires connected to the same thermistor 293 are passed through the through holes 2911 in groups of two. The wires pass through the through holes 2911 and are welded to the thermistor circuit board 292. The wires are bent to clamp the strip positioning plate 29 and the thermistor circuit board 292. The thermistor circuit board 292 is clamped between the strip positioning plate 29 and the inner wall of the air delivery cavity 24. The side of the thermistor circuit board 292 extends out of the air delivery cavity 24 toward the handle 1, and a wiring terminal is provided at the protruding end, which is electrically connected to the main circuit board 3. The temperature control structure of the hairpin of the hair straightener clamps the thermistor circuit board 292 between the strip positioning plate 29 and the inner wall of the air supply cavity 24, so that the thermistor circuit board 292 will not be contacted by dust brought by the hot air, and the strength of the thermistor circuit board 292 is enhanced by the strip positioning plate 29, so it is not easy to break during the installation process. At the same time, the assembly between the strip positioning plate 29 and the air supply cavity 24 makes it easier to ensure the sealing of the air supply cavity 24.

[0017] A plurality of convex columns 291 with through holes 2911 are provided on one side of the strip positioning plate 29, and a thermistor 293 is supported between the two convex columns 291, and a flow gap is provided between the thermistor 293 and the inner wall of the air delivery chamber 24. With this structure, the thermistor 293 is supported by the convex columns 291, so that the thermistor does not contact the strip positioning plate 29 and the inner wall of the air delivery chamber 24, so that the temperature detection is more accurate.

[0018] The two clamping plates 2 include a rotating arm 21, an air delivery shell 22 and an air guide plate 23. The air delivery shell 22 is clamped between the rotating arm 21 and the air guide plate 23. The air delivery shell 22 and the air guide plate 23 are assembled to form an air delivery cavity 24 and a strip air outlet 26. The air inlet end of the air delivery cavity 24 is connected to the air guide tube 41.

[0019] Two positioning parts 221 are provided on one side of the air delivery housing 22 near the strip air outlet 26, a strip positioning plate 29 is embedded between the two positioning parts 221, and an opening is provided on the positioning part 221 near the handle 1 side, and the thermistor circuit board 292 extends out of the air delivery cavity 24 from the opening. This structure facilitates the positioning of the strip positioning plate 29.

[0020] A closed installation space is formed between the strip positioning plate 29 and the air delivery housing 22, and the side of the thermistor circuit board 292 located in the air delivery cavity 24 is arranged in the installation space. This structure is used to further completely seal the thermistor circuit board 292 located in the air delivery cavity 24, thereby preventing the thermistor circuit board 292 from contacting dust.

[0021] 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 temperature control structure for a hair clip of a hair straightener, comprising a handle (1) and hair clips (2) hingedly connected to the handle (1) and arranged opposite to each other, characterized in that: The handle (1) is provided with an air inlet end and an air outlet end. A main circuit board (3), a motor and a heating element are provided in the handle (1). An air guide elastic member (4) is provided at the air outlet end of the handle (1). One end of the air guide elastic member (4) is connected to the air outlet end, and the other end is forked into two air guide tubes (41) which are connected to the air delivery cavities (24) in the two hairpin plates (2) in a one-to-one correspondence. The hairpin plates (2) are provided with a strip air outlet (26) which is connected to the air delivery cavities (24). A strip positioning plate (29) is provided in the air delivery cavity (24) on one side close to the strip air outlet (26). A plurality of through holes are provided on the strip positioning plate (29). A thermistor circuit board (29) is provided on one side of the strip positioning plate (29). 2), a plurality of thermistors (293) are arranged on the other side of the strip positioning plate (29), and wires connected to the same thermistor (293) are passed through the through holes (2911) in groups of two. The wires pass through the through holes (2911) and are soldered to the thermistor circuit board (292). The wires are bent to clamp and fix the strip positioning plate (29) and the thermistor circuit board (292). The thermistor circuit board (292) is clamped between the strip positioning plate (29) and the inner wall of the air delivery cavity (24). The side of the thermistor circuit board (292) extends out of the air delivery cavity (24) toward the handle (1), and a wiring terminal is provided at the extended end. The wiring terminal is electrically connected to the main circuit board (3).

2. A temperature control structure for a hair straightener as claimed in claim 1, characterized in that: A plurality of convex columns (291) having the through holes (2911) are provided on one side of the strip-shaped positioning plate (29); the thermistor (293) is supported between two of the convex columns (291); and a flow gap is provided between the thermistor (293) and the inner wall of the air delivery cavity (24).

3. A temperature control structure for a hair straightener as claimed in claim 1, characterized in that: The two hairpin plates (2) comprise a rotating arm (21), an air delivery shell (22) and an air guide plate (23); the air delivery shell (22) is sandwiched between the rotating arm (21) and the air guide plate (23); the air delivery shell (22) and the air guide plate (23) are assembled to form the air delivery cavity (24) and the strip-shaped air outlet (26); the air inlet end of the air delivery cavity (24) is connected to the air guide cylinder (41).

4. A temperature control structure for a hair straightener as claimed in claim 3, characterized in that: Two positioning portions (221) are provided on one side of the air delivery shell (22) close to the strip-shaped air outlet (26), the strip-shaped positioning plate (29) is embedded between the two positioning portions (221), and an opening is provided on the positioning portion (221) close to the handle (1), and the thermistor circuit board (292) extends out of the air delivery cavity (24) from the opening.

5. A temperature control structure for a hair straightener as claimed in claim 4, characterized in that: A sealed installation space is formed between the strip-shaped positioning plate (29) and the air delivery housing (22), and the thermistor circuit board (292) is arranged in the installation space on one side located in the air delivery cavity (24).

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