Adjustable pitch comb assembly and straightening comb

Abstract

The application discloses a distance-adjustable comb assembly and a straightening comb. The comb assembly comprises fixed teeth, movable teeth and elastic components. The movable teeth are arranged to sandwich the fixed teeth to form a fixed tooth-movable tooth combination. The elastic components are arranged between adjacent movable teeth. The movable teeth are pushed by the elastic components to form an elastic floating comb tooth structure. The comb assembly further comprises a rotating shaft. The rotating shaft is provided with pushing parts. Each pushing part has at least two parts with different thicknesses. The pushing parts are embedded between the bottoms of the movable teeth in the same group. By rotating the rotating shaft to different angles, the pushing parts push the movable teeth on both sides at different thicknesses, so that the adjustable gap between the movable teeth and the fixed teeth is changed to meet the needs of different hair types to select different comb gaps. The damage to the hair is reduced, the consumers have more choices, and the use experience of the users is improved.

Description

Technical Field

[0001] This invention relates to the field of hair care tools, and more particularly to a straight hair comb with flexible floating teeth. Background Technology

[0002] Straightening combs are widely used in the hair care industry to straighten hair. The drawback of traditional straightening combs is that the spacing between the comb teeth is fixed and cannot be changed. That is, the distance between each comb tooth is always the same and cannot be adjusted, which may make them unsuitable for all hair types or thicknesses. For example, if the comb teeth are too far apart (large gaps), they may not be able to effectively grip fine hairs, affecting the straightening effect. Conversely, if the comb teeth are too close together (small gaps), it may be difficult to straighten thick or curly hair without causing breakage.

[0003] To address this, the applicant has filed a Chinese utility model patent entitled "An Elastic Floating Tooth Straightening Comb" (patent number CN202420965094.5). This invention utilizes an elastic tooth structure that can increase or decrease the gap between the teeth under external force and the elasticity of an elastic body, allowing the teeth to adapt to different hair thicknesses and sizes, ensuring that each hair receives appropriate tension. However, this elastic floating tooth design still has some problems. For example, the movable gap between the teeth is preset. For instance, if the preset gap is 0-1mm, when the gap is 0mm, a single damaged or thin hair strand, gripped and pulled by these elastic teeth, may break due to the inability to withstand the preset elastic gripping force. This results in sometimes excessive force on the hair when the comb is pulling damaged or thin hair, easily causing discomfort and even breakage, thus affecting the user experience. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides an adjustable comb assembly and straightening comb with a more reasonable structural design, flexible and floating comb tooth gap, and adjustable minimum value of comb tooth gap by the user, so as to avoid fragile hair strands being pulled and broken.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an adjustable-pitch comb assembly, comprising fixed teeth, movable teeth, and an elastic component, wherein the movable teeth sandwich the fixed teeth to form a fixed-tooth-moving-tooth combination, and an elastic component is provided between adjacent movable teeth, thereby squeezing the movable teeth to form an elastic floating comb structure; it also includes a rotating shaft, on which a plurality of squeezing and pushing parts are provided, each squeezing and pushing part having at least two parts of different thicknesses; each squeezing and pushing part is respectively embedded between the bottoms of the movable teeth in the same group, and by rotating the rotating shaft, the parts of different thicknesses of the squeezing and pushing parts are squeezed into the space between the movable teeth, thereby realizing the change of the pitch between the movable teeth and the fixed teeth.

[0006] A hair straightener includes a housing, a heating element, a comb tooth sleeve, a circuit board, and the aforementioned comb tooth assembly. The comb tooth assembly, heating element, and circuit board are installed in the housing, and the heating element is connected to the circuit board. The fixed teeth contact the heating element to form heated comb teeth, and the comb tooth sleeve is installed on the housing and covers the outside of the comb tooth assembly to isolate the heat from the heated comb teeth.

[0007] This invention, based on the existing elastic floating comb tooth structure, sets a rotating shaft with a squeezing and pushing part at the bottom of the comb teeth. By rotating the rotating shaft to different angles, the squeezing and pushing part will push the moving teeth on both sides with different thicknesses, thereby changing the maximum value of the adjustable gap between the moving teeth and the fixed teeth. This allows for different hair types to choose different comb tooth gaps, thereby reducing damage to the hair, giving consumers more choices, and improving the user experience. Attached Figure Description

[0008] Figure 1 This is a three-dimensional view of the hair straightener of the present invention;

[0009] Figure 2 This is an exploded structural diagram of the hair straightener of the present invention;

[0010] Figure 3 This is a schematic cross-sectional view of the comb head portion of the hair straightener of the present invention;

[0011] Figure 4 for Figure 3 A partial enlarged view of the assembly area of ​​the rotating shaft with the fixed and moving teeth shown;

[0012] Figure 5 This is an exploded view of the comb assembly.

[0013] Figure 6 This is a planar structural diagram showing the assembly state of the rotating shaft with the fixed and moving teeth.

[0014] Figure 7 A structural diagram showing the rotating shaft assembled with fixed and moving teeth, after removing several moving teeth;

[0015] Figure 8 This is a cross-sectional schematic diagram showing the adjustment of the moving tooth pitch from level one to level four.

[0016] Figure 9 This is a structural diagram of the bottom surface of the fixed tooth;

[0017] Figure 10 This is a three-dimensional structural diagram of the rotation axis.

[0018] In the diagram, 0 is the comb assembly, 1 is the fixed tooth, 11 is the tooth plate, 12 is the receiving groove, 13 is the shaft groove, 2 is the moving tooth, 21 is the retaining foot, 22 is the floating spring, 3 is the rotating shaft, 31 is the extrusion part, 32 is the positioning ring, 33 is the positioning cover, 4 is the knob, 41 is the drive gear, 42 is the driven gear, 51 is the positioning head, 52 is the positioning spring, 53 is the pressure plate, 6 is the gasket, 7 is the housing, 8 is the comb cover, 9 is the heating element, and 10 is the circuit board. Detailed Implementation

[0019] In this embodiment, refer to Figures 1-10 The adjustable-gap comb assembly includes fixed teeth 1, movable teeth 2, and elastic components. The movable teeth 2 sandwich the fixed teeth 1 to form a "fixed tooth-moving tooth" combination. Generally, two movable teeth 2 sandwich one fixed tooth 1. Of course, the fixed teeth 1 at both ends are only equipped with one movable tooth 2. An elastic component is provided between adjacent movable teeth 2, such as a movable spring 22 (silicone block can also be used). The movable spring 22 pushes the movable teeth 2 to both sides to form an elastic floating comb structure. It also includes a rotating shaft 3, on which a plurality of pushing parts 31 are provided. Each pushing part 31 has at least two parts of different thickness, forming a cam-like structure. Each pushing part 31 is embedded between the bottom of the movable teeth 2 in the same group. By rotating the rotating shaft 3, the different thickness parts of the pushing parts 31 are pushed into the space between the movable teeth 2, thereby changing the distance between the movable teeth 2 and the fixed teeth 1.

[0020] Each pushing part 31 corresponds to two moving teeth 2 or one fixed tooth 1, and the number can be the same as the number of fixed teeth 1. A receiving groove 12 is provided at the bottom of each fixed tooth 1, and the pushing part 31 is aligned with the receiving groove 12, providing accommodating space for the pushing part 31 to rotate. When the rotating shaft 3 rotates, the pushing part 31 enters the receiving groove 12. A latch 21 is provided at the bottom of the moving teeth 2; the latches 21 of the same set of moving teeth 2 extend towards the receiving groove, while the latches 21 of two moving teeth 2 extend towards each other, and the pushing part 31 is located between the latches 21. When the rotating shaft 3 rotates, the pushing part 31 rotates and squeezes between the two latches 21, thereby opening the two latches 21 through sections of different thicknesses, thus changing the maximum movable gap between the moving teeth 2 and the fixed teeth 1.

[0021] The extrusion section 31 has at least two sections of different thicknesses, each corresponding to at least two maximum gap settings between the moving tooth 2 and the fixed tooth 1, such as five settings, allowing the gap between the moving tooth 2 and the fixed tooth 1 to be adjustable between 0mm and 2mm. The sections of different thicknesses on the extrusion section 31 are arranged in a stepped structure (or sloping shape) from thinnest to thickest. For example, the thinnest part corresponds to a 0mm gap at setting one, the next corresponds to a 0.1mm gap at setting two, a 0.25mm gap at setting three, a 0.4mm gap at setting four, and the thickest part corresponds to a 0.8mm gap at setting five. Of course, other gap values ​​can also be set.

[0022] A knob 4 is connected to one end of the rotating shaft 3, and the rotating shaft 3 is controlled to rotate by the knob 4.

[0023] The bottom of each fixed tooth 1 is connected to a tooth plate 11. A shaft groove 13 is provided in the middle of the tooth plate 11. The rotating shaft is installed in the shaft groove 13, and the knob 4 is located outside the shaft groove 13.

[0024] The knob 4 is connected to a drive gear 41, and one end of the rotating shaft 3 is connected to a driven gear 42, which meshes with the drive gear 41. Rotating the knob 4 will drive the drive gear 41, which in turn drives the rotating shaft 3 to rotate via the driven gear 42. The other end of the rotating shaft 3 extends out of the shaft groove 13 and is connected to a positioning cover 33, which enables the pivotal installation of this end of the rotating shaft 3.

[0025] A positioning head 51 is provided next to the drive gear 41. A positioning spring 52 is connected to the tail end of the positioning head 51. The positioning spring 52 pushes the positioning head 51 into the drive gear 41 to achieve positioning of the rotating shaft 3. At this time, the rotating shaft 3 will not rotate on its own. The knob 4 needs to be turned forcefully to compress the positioning spring 52 and make the positioning head 51 disengage from the tooth groove of the drive gear 41. A pressure plate 53 is provided next to the positioning head 51. The pressure plate 53 presses on the top of the positioning head 51 to limit the positioning head 51 and prevent the positioning head 51 from being pushed too far when the knob 4 is turned.

[0026] Several positioning rings 32 are provided on the rotating shaft 3. The positioning rings 32 and the pushing part 31 are spaced apart from each other. The positioning rings 32 separate adjacent sets of fixed teeth-moving teeth combinations.

[0027] Reference Figures 1-4 The hair straightener includes a housing 7, a heating element 9, a comb tooth sleeve 8, a circuit board 10, and the aforementioned comb tooth assembly 0. The comb tooth assembly 0, the heating element 9, and the circuit board 10 are installed in the housing 7, and the heating element 9 is connected to the circuit board 10. The fixed teeth 1 contact the heating element 9 to form heated comb teeth. The comb tooth sleeve 8 is installed on the housing 7 and covers the outside of the comb tooth assembly 0 to insulate the heat from the heated comb teeth and prevent burns to the skin. The heating element 9 is prior art and is not part of the technical problem to be solved by this invention; therefore, its specific structure will not be described in detail.

[0028] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. An adjustable-pitch comb assembly, comprising fixed teeth, movable teeth, and an elastic component, wherein the movable teeth sandwich the fixed teeth to form a fixed-tooth-moving-tooth combination, and an elastic component is disposed between adjacent movable teeth, wherein the elastic component squeezes the movable teeth to form an elastically floating comb structure, characterized in that: It also includes a rotating shaft with several extrusion parts on it. Each extrusion part has at least two sections of different thicknesses. Each extrusion part is embedded between the bottom of the moving teeth in the same group. By rotating the rotating shaft, the different thickness sections of the extrusion parts are extruded between the moving teeth to change the distance between the moving teeth and the fixed teeth.

2. The adjustable-pitch comb assembly according to claim 1, characterized in that: Each extrusion section corresponds to two moving teeth or a certain number of teeth.

3. The adjustable-pitch comb assembly according to claim 2, characterized in that: Each fixed tooth has a receiving groove at its bottom, which provides a receiving space for the extrusion part to rotate; a latch is provided at the bottom of the moving tooth, and the latches of the same set of moving teeth extend toward the receiving groove, so that the extrusion part is located next to the latch; the elastic component is a spring or a silicone block.

4. The adjustable-pitch comb assembly according to claim 1, characterized in that: The extrusion section has at least two parts of different thicknesses, which correspond to at least two maximum gap settings between the moving teeth and the fixed teeth, so that the gap between the moving teeth and the fixed teeth can be adjusted between 0mm and 2mm. The parts of different thicknesses on the extrusion section are arranged in order from thin to thick to form a slope or stepped structure.

5. The adjustable-pitch comb assembly according to claim 1, characterized in that: A knob is connected to one end of the rotating shaft, and the rotating shaft is controlled by the knob.

6. The adjustable-pitch comb assembly according to claim 5, characterized in that: The bottom of each fixed tooth is connected to a tooth plate. A shaft groove is provided in the middle of the tooth plate. The rotating shaft is installed in the shaft groove, and the knob is located outside the shaft groove.

7. The adjustable-pitch comb assembly according to claim 6, characterized in that: The knob is connected to a drive gear, and one end of the rotating shaft is connected to a driven gear, which meshes with the drive gear; the other end of the rotating shaft extends out of the shaft groove and is connected to a positioning cover, which enables the pivotal installation of this end of the rotating shaft.

8. The adjustable-pitch comb assembly according to claim 7, characterized in that: A positioning head is provided next to the drive gear, and a positioning spring is connected to the tail end of the positioning head. The positioning spring pushes the positioning head to engage with the drive gear to achieve positioning of the rotating shaft. A pressure plate is provided next to the positioning head, and the pressure plate presses on top of the positioning head to limit the positioning head.

9. The adjustable-pitch comb assembly according to claim 3, characterized in that: Several positioning rings are provided on the rotating shaft. The positioning rings and the pushing part are spaced apart from each other. The positioning rings separate two adjacent sets of fixed teeth-moving teeth combinations.

10. A hair straightener, comprising a housing, a comb tooth assembly, a heating element, a comb tooth sleeve, and a circuit board, wherein the comb tooth assembly, the heating element, and the circuit board are installed in the housing, the heating element is connected to the circuit board, and the comb tooth sleeve is installed on the housing and covers the outside of the comb tooth assembly; characterized in that: The comb assembly adopts the comb assembly according to any one of claims 1-9, wherein the fixed teeth contact the heating element to form heated comb teeth.

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