1. Field of the Invention
The present invention relates to a hair clipping or holding device, and more particularly to a foldable hair clipping or holding device including an improved structure or configuration for allowing the hair holding device to be easily molded or made or manufactured and for preventing the hair holding device from being broken.
2. Description of the Prior Art
Various kinds of typical hair holding devices have been developed and provided for styling or holding or clipping the hair of the user and normally comprise two resilient or spring blades hinged or pivotally or rotatably coupled together to resiliently clipping or holding the hair of the user.
For example, U.S. Pat. No. 5,109,878 to Kuo-Hua, U.S. Pat. No. 5,396,912 to Chou, U.S. Pat. No. 5,758,672 to Chou, U.S. Pat. No. 6,192,894 to Yasuda, U.S. Pat. No. 6,394,102 to Vogel, U.S. Pat. No. 7,461,661 to Chudzik et al., and U.S. Pat. No. 7,644,717 to Hsu disclose several of the typical hair holding or styling or clipping mechanisms each also comprising two resilient or spring blades hinged or pivotally or rotatably coupled together to resiliently clipping or holding the hair of the user.
However, the resilient or spring blades should be hinged or pivotally or rotatably coupled together with a spring biasing member, and the typical hair holding or styling or clipping mechanisms include a complicated structure or configuration having many parts or elements that may not be made or manufactured and assembled together.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional hair holding devices.
The primary objective of the present invention is to provide a hair holding device including an improved structure or configuration for allowing the hair holding device to be easily made or manufactured.
The other objective of the present invention is to provide a hair holding device including an improved structure or configuration for increasing the bending strength of the hair holding device and for preventing the hair holding device from being easily broken when bent by the user.
In accordance with one aspect of the invention, there is provided a hair holding device comprising a frame member including a U-shaped structure having a first spring arm and a second spring arm separated from each other, the first and the second spring arms including a root portion joint together for allowing the first and the second spring arms to be folded relative to each other, the first and the second spring arms each including a free end portion having an extension extended therefrom, and the extensions of the first and the second spring arms being separated from each other and extended toward each other for forming a space between the extensions of the first and the second spring arms, the first spring arm including a first engaging element provided in the extension of the first spring arm, and the second spring arm including a second engaging element provided on the extension of the second spring arm for selectively engaging with the first engaging element of the extension of the first spring arm and for selectively coupling the extensions of the first and the second spring arms together, and for forming an O-shaped configuration for the frame member and for selectively defining a chamber in the frame member when the first and the second engaging elements of the extensions of the first and the second spring arms are engaged with each other, the frame member including a clamping blade extended from the root portion of the first and the second spring arms, and extended into the chamber of the frame member, and extended along a longitudinal central axis (X) of the frame member, the clamping blade including a length large enough to have a free end portion contactable and engageable with the extensions of the first and the second spring arms when the extensions of the first and the second spring arms are coupled together, and the clamping blade including a curved bulge extended therefrom for selectively engaging into the chamber of the frame member, and for selectively engaging with a hair of a user, and the clamping blade including a selected resilience for allowing the clamping blade to be selectively separated from the extensions of the first and the second spring arms, and to be selectively and resiliently engaged with the extensions of the first and the second spring arms when the extensions of the first and the second spring arms are coupled together.
The frame member includes a thickness ranged between 0.8 and 1.2 mm, and preferably the frame member includes a thickness of 0.9 mm. The frame member includes an included angle (θ) formed between either the first or the second spring arms and the longitudinal central axis (X) and preferably ranged between 5 and 7 degrees.
The first engaging element of the first spring arm is selected from a depression formed in the extension of the first spring arm, and the second engaging element of the second spring arm is selected from a projection extended from the extension of the second spring arm for engaging with the depression of the extension of the first spring arm.
The frame member is manufactured with the following materials: 55% of 1,4-cyclohexanedimethanol (CHDM), 30% of ethylene glycol (EG), 10% of phosphotungstic acid (PTA), 1% of optical brightener, and 4% of polypropylene (PP) or butadiene-styrene copolymers sold under the trademark, K-Resin, and include an excellent bending strength for preventing the hair holding device from being easily broken.
Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
Referring to the drawings, and initially to
For example, as shown in
As shown in
The clamping blade 30 of the frame member 1 includes a length large enough to have a free end portion 31 contactable or engageable with the extensions 15, 16 of the spring arms 10, 11 (
The clamping blade 30 of the frame member 1 includes a suitable or selected resilience for allowing the clamping blade 30 to be selectively disengaged or separated or spaced from the extensions 15, 16 of the spring arms 10, 11 for a space or distance or opening 40 (
The frame member 1 of the hair holding device in accordance with the present invention may be made or manufactured with the following polymerized plastic mixture materials: 55% of 1,4-cyclohexanedimethanol (CHDM), 30% of ethylene glycol (EG), 10% of phosphotungstic acid (PTA), 1% of optical brightener, and 4% of polypropylene (PP) or butadiene-styrene copolymers sold under the trademark, K-Resin with 5% tolerance for each individual component respectively, and the above polymerized plastic mixture is preferably made or manufactured with an extrusion method via a preset mold, in which the 1,4-cyclohexanedimethanol (CHDM) is primarily used in producing chemically modified polyethylene terephthalate (PET), amorphous material glycol-modified poly-cyclohexylenedimethylene terephthalate (PCTG) of PET modified with CHDM (PETG), engineering plastic substance, adhesive substance and the like, and is made from dimethyl terephthalate (DMT) via hydrogenation. The frame member 1 thus made may include an excellent bending strength for preventing the hair holding device from being easily broken. The ethylene glycol (EG) is a thick paste-like liquid with preferable boiling point of 197.37.degree. The phosphotungstic acid (PTA) is converted from p-Xylene (PX) in the acetic acid solution via catalytic oxidization and thermal refinement under suitable pressure, the optical brightener is used for enhancing the shining brightness, the butadiene-styrene copolymers sold under the trademark, K-Resin is a transparent butadiene-styrene copolymer; and the polypropylene (PP) features in flexibly excellent processing ability. By pouring the polymerized plastic mixture of 1,4-cyclohexanedimethanol (CHDM), ethylene glycol (EG), phosphotungstic acid (PTA), optical brightener and polypropylene (PP) or butadiene-styrene copolymers sold under the trademark, K-Resin into the preset mold of the hairclip to be extruded out, a frame member 1 of the hair holding device includes a good malleability, re-plasticization ability and tenacity without susceptibility to rupture, breakage, whiten-crazing effect at bent portion and aging effect, is fabricated to have artistic effect in shining brightness and eco-friendly effect.
Accordingly, the hair holding device in accordance with the present invention includes an improved structure or configuration for allowing the hair holding device to be easily made or manufactured, and for increasing the bending strength of the hair holding device and for preventing the hair holding device from being broken.
Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.