Abstract:
A motorcycle helmet includes a jaw protector pivotably attached to the helmet along opposite sides thereof. The jaw protector is provided with at least one releasable lock fixing the jaw protector in a lowered use position. The lock is deactivated for enabling a pivoting of the jaw protector to a raised position.

Description:
FIELD OF THE INVENTION  
         [0001]    The invention relates to a jaw protecting apparatus of helmet so as to stabilize a feeling of wearing by smoothly moving up and down a jaw protection, which is installed in front of the helmet, and then letting the center of gravity be located in the rear of the helmet, in a helmet which is worn to protect the head of a person taking a motorbicycle.  
         DESCRIPTION OF THE PRIOR ART  
         [0002]    Generally where a person rides on two wheeled vehicles such as motorbicycles, etc . . . , a rider should necessarily wear a helmet for protecting a head, in order to protect his head. Such helmets are made so as to not obstruct the view of people wearing them due to wind force rising in front of him, and to solve respiratory distress.  
           [0003]    Meanwhile, conventional helmets installed and used in the same manner as stated above, have jaw protections at their below portions to protect jaws of peoples wearing helmets. This jaw protecting apparatus is made so as to fix the two ends at both sides of the body of the said helmet. A jaw protection fixed at the said helmet, is firmly fixed and installed not to be detached from the helmet.  
           [0004]    However, a person wearing the helmet can neither talk with the other party nor drink beverage nor smoke. In addition, the same conventional helmet protections as stated above, was made in order for the fixture, the pivot of the gravity center to be firmly installed at the center of said helmet body on the condition that an antishocking member is equipped in the inside of the outer body.  
           [0005]    Therefore, conventional jaw protections of helmets have a defect that a feeling of wearing helmets is very bad since when wearing the said helmet, the loading of said jaw protection is pressed in the front of the person wearing it.  
           [0006]    In addition, since the jaw protection of said helmet is fixed on the condition that it is not rotated, when said helmet is put on or taken off, the said jaw protection is being an obstacle and furthermore, has problems, that is to say, it is very inconvenient for a person to wear or take off said helmet.  
         SUMMARY OF THE INVENTION  
         [0007]    The present invention is devised by considering all problems of the same conventional helmets as stated above, and contriving solutions. The purpose of the present invention is to provide a jaw protecting apparatus of helmet which is designed to stabilize a feeling of wearing a helmet, by smoothly moving up and down the jaw protection which is installed in front of the helmet, to protect the jaw of a person wearing the helmet, and by locating the gravity center of said jaw protection at the back of the helmet, in the helmet which is worn to protect the head of the rider when he rides on a motorbicycle. Hereinafter, the detailed descriptions pursuant to the enclosed drawings, will be provided 
       
    
    
     BRIEF DESCRIPTION OF DRAWINGS  
       [0008]    [0008]FIG. 1 is a unilateral cross-sectional view showing the installation state of the first embodiment of the present invention.  
         [0009]    [0009]FIG. 2 is a cross-sectional view showing the state of the helmet jaw protection when the helmet jaw protection of the first embodiment of the present invention is fixed  
         [0010]    [0010]FIG. 3 is a cross-sectional view showing the state where the helmet jaw protection of the first embodiment of the present invention is moved up.  
         [0011]    [0011]FIG. 4 is a lateral view showing the state where the helmet jaw protection of the first embodiment of the present invention is installed.  
         [0012]    [0012]FIG. 5 is a unilateral cross-sectional view showing the state of the installation of the second embodiment of the present invention.  
         [0013]    [0013]FIG. 6 is a cross-sectional view showing the state where the helmet jaw protection of the second embodiment of the present invention is fixed.  
         [0014]    [0014]FIG. 7 is a cross-sectional view showing the stated where the helmet jaw protection of the second embodiment of the present invention is moved up.  
         [0015]    [0015]FIG. 8 is a lateral view showing the state where the jaw protection of the second embodiment of the present invention is installed. 
     
    
     &lt;The Explanation of Signs of the Main Portion of Drawings&gt; 
       [0016]    [0016]                                                1.   Helmet body    2.   Opening portion        3.   Shield    4.   Jaw protection        5, 501:   Fixture    6, 701:   Guide        7, 601:   locker    8:   shaft        9:   Supporter   10, 101:   Rotation member       11:   Handle   12:   Band       13, 131:   Rotary link   14, 602:   Foramen soleare       15:   Rotary central pivot   16:   Protrusion       17, 171, 19, 191:   Planetary gear   18:   Fixed pivot       20:   control bolt   21:   Guider       22, 221:   Stopper   23:   Spring       24:   Wire guide   25:   Wire       26:   Bridging   27:   Extension plate                    
       DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0017]    In having installed a shield ( 3 ) enabled to move up and down in the front opening portion ( 2 ) of a helmet body ( 1 ) and a jaw protection ( 4 ) equipped with an antishocking member in the front of the lower portion of a shield ( 3 ), a fixture ( 5 ) having bridgings at both side ends of the said helmet body ( 1 ) is installed and a locker ( 7 ), which is supported on each of guide ( 6 ) at the two-sides of said jaw protection ( 4 ), and then turns on the center of pivot ( 8 ), is oppositely installed.  
         [0018]    A supporter ( 9 ) is installed inside of the front of said jaw protecting apparatus ( 4 ), and a rotation member wherein a handle ( 11 ) is formed thereto, is installed so as to enable to rotate. At said rotation member ( 10 ), the central portion of a band ( 12 ) connected to said lockers ( 7 ), is fixedly install, thereby lockers ( 7 ) connected to a band ( 1 ) according to the rotation member ( 10 ), are rotated. And subsequently, the lockers are locked at said fixture ( 5 ), at the time of their rotation.  
         [0019]    A rotary link ( 13 ) wherein a circular arc foramen soleare is formed, is installed at the upper portion of the said protecting apparatus ( 4 ). At this rotary link ( 13 ), a rotary central pivot ( 15 ) wherein a protrusion is formed and a planetary gear ( 17 ) are installed and at a pivot ( 18 ) of a central shield ( 3 ) of the said helmet body ( 1 ), a planetary gear ( 19 ) engaging with said planetary gear ( 17 ) is installed. At the upper portion of the said pivot ( 18 ), a control bolt ( 20 ) and a guider ( 21 ) is formed respectively, and  
         [0020]    said control bolt ( 20 ) is installed in the manner that it may be inserted into a foramen soleare ( 14 ) of the said rotary link ( 13 ) and that a rotary central pivot ( 15 ) may be inserted at said guider ( 21 ) and that a stopper ( 22 ) may be installed in the lower portion of said fixed pivot ( 18 ).  
         [0021]    In addition, in the one direction of a fixture ( 501 ) having a bridging, as in FIG. 5 to FIG. 8, a guide ( 701 ) is installed and  
         [0022]    a locker ( 601 ) which is elastically installed with spring ( 23 ) at this guide ( 701 ), is installed in such a manner that it may slide at a foramen soleare ( 602 ) and under the state where the one end of a wire ( 25 ) guided by a wire guide ( 24 ) at the inner side end of said jaw protection ( 4 ), is fixed, this wire ( 25 ) is coupled to a rotation member ( 101 ), and the other end of said wire ( 25 ) is installed by sticking it to the said locker ( 601 ).  
         [0023]    In the rear of said jaw protecting apparatus ( 4 ), a rotary link ( 131 ) having a planetary gear ( 171 ) is installed, and a planetary gear ( 191 ) is engaged with said planetary gear ( 171 ). In this context, this planetary gear ( 19 ) is installed in such a manner that the gear is controlled by a stopper ( 221 ) controlled by a bridging ( 26 ) and a resilient plate ( 27 ).  
         [0024]    Hereinafter, we are explaining the status of action of the present invention composed as described above.  
         [0025]    In having installed a shield ( 3 ), which is movable up and down, at the front opening portion ( 2 ) of said helmet body ( 1 ) and a jaw protection ( 4 ) equipped with an anti-shocking material at the front lower portion of the shield ( 3 ), a fixture ( 5 ) having bridgings at both side ends of said helmet body ( 1 ) is installed and a locker ( 7 ) which is supported on each guide ( 6 ) at two sides of the said jaw protection ( 4 ), and which turns on a axis ( 8 ), is oppositely installed. Under the condition that a rotation member ( 10 ) wherein a handle ( 11 ) is formed at a supporter ( 9 ) in the inner front side of said jaw protection ( 4 ), and which is allowed to turn, is installed,  
         [0026]    the central portion of a band ( 12 ) connecting to said lockers ( 7 ) is fixedly installed. Therefore, according to a rotation of a rotation member ( 10 ), lockers ( 7 ) connected to a band ( 12 ) is rotated. When the lockers are rotated, they are locked at said fixture  5 ). If a handle ( 11 ) of said rotation part ( 10 ) is pressed, said rotation member ( 10 ) is rotated and at the same time, the band ( 12 ) fixed thereto, will become pulled. According as this band ( 12 ) is pulled, said locker ( 7 ) turns on a shaft ( 8 ), and is detached from a fixture ( 5 ) The detachment of this locker ( 7 ) allows the up movement of said jaw protection ( 4 ). If said jaw protection ( 4 ), which was moved up, is moved down, said locker ( 7 ) will be moved down according to the slant portion of the fixture ( 5 ) and at the same time, it is suspended on the fixture ( 5 ). Therefore, said jaw protection ( 4 ) becomes fixed.  
         [0027]    In addition, a rotation link ( 13 ) wherein a rotary central pivot ( 15 ) is formed, wherein a circular arc foramen soleare ( 14 ) and a protrusion ( 16 ) on the upper portion of said jaw protection, is installed. At this rotation link ( 13 ), a planetary gear ( 17 ) is installed and at the same time, it is connected to and installed at a fixture ( 18 ). In this context, said planetary gear ( 17 ) is installed in order for it to go in gear with a planetary gear ( 19 ) installed at said fixed pivot ( 18 ). By doing so, at the time said jaw protection ( 4 ) is moved up, the center of rotation of a jaw protection ( 4 ) is allowed to be located at the back of said fixed pivot ( 18 ). Subsequently, by inserting and installing a foramen soleare ( 14 ) and a rotation center pivot ( 13 ) of said rotation link ( 13 ) at a control volt ( 20 ) and a guider ( 21 ), which are formed on the upper portion of said fixed pivot ( 18 ), said rotation link ( 13 ) is allowed to be smoothly rotated. In addition, after said rotation link ( 13 ) is opened and rotated, a stopper ( 22 ) which is installed in the lower portion of a fixture ( 18 ), leads to the suppression of reverse rotation. A protrusion ( 16 ) of a rotation center pivot ( 15 ) inserted and installed at said guider ( 21 ), controls the scope of rotation of said rotation link ( 13 ).  
         [0028]    Additionally, if it is formed as embodiments shown in FIGS.  5  to  8 , when a person wishes to open a jaw protection ( 4 ), a rotation member ( 101 ) connected to said wire ( 25 ) leads to be pulled. In this context, if this rotation member ( 101 ) is pulled, a wire ( 25 ) connected thereto will pull a locker ( 601 ) installed at a guide ( 701 ). The locker ( 601 ) slides according to a foramen soleare ( 602 ) formed at said guide ( 701 ) and is detached from a fixture ( 501 ) having said bridging and subsequently, said jaw protection can be opened.  
         [0029]    If said jaw protection ( 4 ) is moved down just as it is when said opened jaw protection ( 4 ) is closed, said locker ( 601 ) is under the resilience of a spring ( 23 ) and at the same time, the slant portion formed in one direction, leads to be hung on said fixture ( 501 ).  
         [0030]    When a jaw protection ( 4 ) is opened and closed as stated above, a rotation link ( 131 ) having a planetary gear ( 171 ) which is installed at the back of said jaw protection ( 4 ) rotates according to the replacement and combination of the rotation link ( 131 ) with a planetary gear ( 191 ). When such rotation is made, a planetary gear ( 19 ) is controlled by a stopper ( 221 ) which is controlled by a bridging ( 26 ) and a resilient plate ( 27 ). Such action can prevent it from moving down by itself by small power where the jaw protection is moved up at maximum.  
         [0031]    The present invention as stated above is to allow a jaw protection ( 4 ) installed in the lower front portion of a helmet body ( 1 ) to move up and down, thereby only the jaw protection is permitted to be rotated and moved upwardly on the state where a rider wears said helmet. Eventually, the present enables the motorcyclist to a person to freely talk with another person and to drink and smoke.  
         [0032]    And, the present invention provide the prevention of the flow of the jaw protection by moving up and down said jaw protection, and by fixedly maintaining the fixation condition.  
         [0033]    In addition, the rotation gravity of said jaw protection should be located at the back of a fixed pivot of a shield, the center portion of the helmet and therefore, the loading of the gravity center of said jaw protection may not bias the front side of the helmet and the transfer of the gravity center may allow the whole weight and loading of the helmet, when said helmet is worn, to be at work evenly in the head of the wearer. By doing so, a feeling of wearing the helmet can be stabilized.