Abstract:
The hair clip includes two comb-shaped elements pivotably mounted in relation to each other and held in a brought-together state by an elastic member. Each comb-shaped element has teeth arranged on an end of the element. A first set of teeth has at least one opening in which a corresponding tooth from a second set of teeth engages when the cone-shaped elements are in a completely or a partially brought-together position to adequately clamp the hair.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to a hair clip. 
     It is well-known for a hair clip to be used for holding hair or for fashioning a hairstyle. 
     Such a clip comprises two comb-shaped elements mounted pivotably in relation to one another, which are usually held in a brought-together position by an elastic member such as a kickover spring. The teeth of these two elements have a shape which is curved to a greater or lesser extent and are offset from one element to the other so as to interlock when the two elements are brought together. 
     This type of clip has the disadvantage of not holding very well in the hair and of tending, therefore, to slide when the head is moved. 
     Indeed, these movements generate a centrifugal force on the clip in the opposite direction to that of the teeth which causes the two comb-shaped elements to move apart on account of the curved shape of the teeth and the weak elastic force of the spring. 
     Moreover, such a clip does not perform very effective holding of the hair on account of the fact that the teeth are not interlocked, or are only weakly interlocked, when the clip is placed in the hair. The hair is not held very well by these teeth and can escape relatively easily from the clip. 
     The present invention aims to eliminate these disadvantages. 
     SUMMARY OF THE INVENTION 
     The clip to which the invention relates comprises, in a manner known per se, two comb-shaped elements mounted pivotably in relation to one another and usually held in a brought-together position by an elastic member. 
     According to the invention, the teeth of one comb-shaped element are arranged opposite the teeth of the other comb-shaped element and one of two opposite teeth has at least one opening in which the other tooth engages when the two elements are in the completely or partially brought-together position. 
     Thus, the teeth of the two comb-shaped elements do not interlock but interpenetrate when the clip is completely or partially closed. The mass of hair gripped between the two elements tends to press the teeth against one another, thus generating friction between the teeth and creating a self-locking effect of the elements. This self-locking effect makes perfect holding of the clip in the hair possible even in the event of relatively sharp movements of the head. 
     Moreover, the longitudinal edges of the teeth come close to one another when the clip is completely or partially closed and together delimit numerous chicanes for clamping the hair. These chicanes make a clamping of the teeth in relation to one another possible, and this brings about the immobilization of the comb-shaped elements and contributes to good holding of the clip in the hair. 
     Preferably, the teeth have a base part of relatively slight curvature, an intermediate part of relatively great curvature extending over an arc of roughly 90°, and a free end part of relatively slight curvature. 
     The free end parts of two opposite teeth thus interpenetrate at a great angle, which favors the coming into mutual contact of these teeth during gripping of the hair and, therefore, the self-locking effect. 
     The teeth may have any shape that is suitable for increasing the clamping of the hair between them. 
     Thus, the opening made in one tooth may be of oval, oblong or triangular shape, or may comprise, on the same side as the free end of the tooth, a widened part favoring the introduction of the tooth situated opposite and, on the same side as the base of the tooth, a narrowed part favoring the clamping of the hair. The same tooth may also have two openings aligned longitudinally, in which the tooth situated opposite engages successively during the bringing-together of the two comb-shaped elements. 
     As for a tooth without an opening, this may have a non-rectilinear shape and/or a section which is variable over its length, favoring the arrangement of chicanes for clamping the hair. This tooth may also have an undulating shape, or a succession of widened portions and narrowed portions, or on the other hand a widened part at its base and a narrowed free end part which are intended to interact with an opening of corresponding shape. 
     The distribution of the teeth from one element to the other can be any required. Thus, the teeth comprising one or more openings and the teeth without an opening may be alternated on one and the same element, in a regular manner or not, or all the teeth comprising an opening may be arranged on the same element, while the other element comprises all the teeth without an opening. 
     The body of the elements itself may have any decorative shape. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be described in conjunction with the following drawings in which like reference numerals designate like elements and wherein: 
     FIG. 1 is a perspective view of the clip according to one embodiment of the invention; 
     FIG. 2 is a bottom plan of the clip; 
     FIG. 3 is a side view of the clip; 
     FIGS. 4a-f and 5a-c are views of various configurations of the teeth of the clip. 
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     FIGS. 1 to 3 illustrate the hair clip 1 according to the invention holds hair or fashions a hairstyle. 
     The clip 1 comprises two comb-shaped elements 2 each having a body 3 of any decorative shape and a series of teeth 4a, 4b. 
     Each body 3 is equipped on its inner face with two lugs 5 perforated by coaxial holes. The holes of the four lugs 5 are brought into alignment and receive a spindle 6 which makes it possible to assemble, with the possibility of pivoting, the two elements 2. 
     A kickover spring 7 comprising two legs 7a is engaged on the spindle 6, between the lugs 5. These legs 7a rest against the bodies 3 and usually hold the two elements 2 in a position in which they are brought close together. 
     As shown in particular in FIG. 3, those ends 3a of the bodies 3 which are opposite the teeth 4a, 4b are curved toward the outside and make it possible, by manual pressure exerted on them, to make the two elements 2 pivot counter to the elastic force of the spring 7 in order to open the clip 1. 
     It can be seen in FIGS. 1 and 2 that the teeth 4a of one element 2 are arranged opposite the teeth 4b of the other element 2 and that the teeth 4a have oval openings 8 in which the teeth 4b of tapering shape are engaged when the two elements 2 are in the completely or partially brought-together position. 
     FIG. 3 shows moreover that the teeth 4a, 4b each have a base part 4a&#39;, 4b &#39; of slight curvature, indeed of virtually rectilinear shape even, an intermediate part 4a&#34;, 4b &#34; of relatively great curvature extending over an arc of roughly 90°, and a free end part 4a&#39;&#34;, 4b&#39;&#34; of relatively slight curvature. 
     By virtue of the openings 8 and said shape of the teeth 4a and 4b, the free end parts 4a&#39;&#34;, 4b&#39;&#34; interpenetrate at a great angle of the order of 170° when the clip 1 is completely or partially closed. 
     The gripping of a mass of hair between the elements 2 tends to press these parts 4a&#39;&#34;, 4b&#39;&#34; against one another, bringing them into mutual contact at the ends of the openings 8. The friction thus generated makes it possible to create a self-locking effect of the elements 2 which brings about perfect holding of the clip in the hair even in the event of relatively sharp movements of the head. 
     Moreover, by virtue of the openings 8, numerous longitudinal edges are created in the region of the teeth 4a, 4b, and which come close to one another when the clip 1 is completely or partially closed. These edges together delimit numerous chicanes for clamping the hair. This clamping brings about the relative immobilization of the elements 2 and contributes to good holding of the clip 1 in the hair. 
     FIGS. 4 and 5 show that the teeth of the elements 2 may have any shape suitable for increasing the clamping of the hair between them. 
     Accordingly, FIG. 4a-f show a number of teeth 40a having one or more openings of different shape. 
     FIG. 4a illustrates a tooth 40a with an opening 80 having, on the same side as the free end of the tooth, a widened part 80a favoring the introduction of the tooth situated opposite, and, on the same side as the base of the tooth, a narrowed part 80b favoring the clamping of the hair. 
     FIG. 4b illustrates a tooth 40a with an opening 81 having a substantially triangular shape. 
     FIG. 4c illustrates a tooth 40a with an opening 82 having an oblong shape and pointed end part 41. 
     FIG. 4d illustrates a tooth 40a having an oblong shape without the pointed end part. 
     FIG. 4e illustrates a tooth 40a with two openings 83 aligned longitudinally, in which the tooth situated opposite engages successively during the bringing-together of the two elements forming the clip. 
     An opening 84 of small size and of triangular shape arranged in the region of the free end of the tooth. 
     FIGS. 5a-c illustrate teeth 40b without an opening. 
     FIG. 5a illustrates a tooth 40b with a widened part 42a at their base and a narrowed free end part 42b which are intended to interact with an opening of corresponding shape, such as the opening 80. 
     FIG. 5b illustrates a tooth 40b with undulations 43. 
     FIG. 5c illustrates a tooth 40b having a succession of widened portions 44a and narrowed portions 44b. 
     The irregular shapes thus formed make possible the arrangement of additional chicanes for clamping the hair. 
     It is clear that the invention is not limited to the embodiments described above by way of example but that, on the contrary, it includes all the variant embodiments. Thus, other shapes of teeth than those shown in the drawing can be envisaged so long as they bring about a self-locking effect of the comb-shaped elements and adequate clamping of the hair. 
     Moreover, the distribution of the teeth from one element to the other can be any required. The teeth comprising one or more openings and the teeth without an opening may be alternated on one and the same element in a regular manner, as shown in FIGS. 1 and 2, or in an irregular manner, for example two or three teeth with an opening interposed with one tooth without an opening. All the teeth comprising an opening may just as well be arranged on the same element, while the other element comprises all the teeth without an opening. 
     The spring which usually holds the two elements 2 in the brought-together position may be of any type, in particular an elastic leaf or a helical spring.