Swing analyzing device

Abstract

In order to correct inappropriate swing motion into an appropriate swing motion, a swing analyzing device which measures body weight distributions in the vicinity of the big toes, the little toes, and the heels for the left and right feet at prescribed points during a swing is analyzed with trajectory and the like of balls being hit by the swing. The swing analyzing device comprises: a left foot weight measuring means and a right foot weight measuring means; a visual recording means; a synchronizing means; a recording means; a left foot template; a right foot template; and a display means to display respectively in the vicinity of the big toe, the little toe, and the heel of the left and right templates, weights loaded in corresponding areas.

What is claimed is:  
     
         1 . A swing analyzing device comprising: 
 a left foot weight measuring means for continuously measuring, during a series of swing motions covering from a beginning to an end of a swing, body weight applied on the left foot in at least three areas in the vicinity of a big toe, a little toe, and a heel, of the left foot;    a right foot weight measuring means for continuously measuring, during a series of swing motions covering from a beginning to an end of a swing, body weight applied on the right foot in at least three areas in the vicinity of a big toe, a little toe, and a heel of the right foot;    a visual recording means for visually recording the swing;    a synchronizing means for synchronously driving the left foot weight measuring means, the right foot weight measuring means, and the visual recording means;    a recording means for recording the body weight applied on the left foot measured by the left foot weight measuring means, the body weight applied on the right foot measured by the right foot weight measuring means, a visual image of the swing recorded by the visual recording means;    a left foot template for loading the left foot;    a right foot template for loading the right foot;    a display means for displaying;    in the vicinity of a big toe, a little toe, and a heel of the left foot template, the body weight applied on the left foot in at least three areas in the vicinity of the big toe, the little toe, and the heel recorded by the recording means, at prescribed point A in the swing; and    in the vicinity of a big toe, a little toe, and a heel of the right foot template, the body weight applied on the right foot in at least three areas in the vicinity of the big toe, the little toe, and the heel recorded by the recording means, at the prescribed point A in the swing; and    the visual image of the swing at the prescribed point A in the swing.    
     
     
         2 . A swing analyzing device according to  claim 1 , wherein the display means displays in the vicinity of the big toe, little toe, and the heel of the left and right feet templates, bar graphs indicating the body weight distribution applied to the left and right feet.  
     
     
         3 . A swing analyzing device according to  claim 2 , wherein bars in the bar graphs have constant lengths in base by variating lengths in hights to indicate longer bars for larger amount of body weight applied.  
     
     
         4 . A swing analyzing device according to  claim 1 , wherein the display means displays in the vicinity of the templates, a numeral representing the body weight applied to the left and right feet.  
     
     
         5 . A swing analyzing device according to  claim 1 , wherein the display means displays a weight ratio of the left foot against a total weight, and the weight ratio of the right foot against the total weight.  
     
     
         6 . A swing analyzing device according to  claim 1 , wherein the display means displays a position of center of gravity against the total weight.  
     
     
         7 . A swing analyzing device according to  claim 1 , wherein the display means displays: 
 a position of center of gravity for the left foot against the total weight applied to the left foot; and    a postion of center of gravity for the right foot against the total weight applied to the right foot.    
     
     
         8 . A swing analyzing device acording to  claim 1 , further comprising: 
 plates for respectively loading the left and right feet;    three load cells disposed below the plates in at least three areas in the vicinity of the big toe, little toe, and the heel of the left and right feet.    
     
     
         9 . A swing analyzing device according to  claim 1 , wherein the visual recording means is a video camera, the synschronizing means is a pulse generator, and the recording means and the display means are computors.  
     
     
         10 . A swing analyzing device according to  claim 1 , wherein the swing is one of a golf swing, a base ball swing, a tennis swing, and a badmitton swing.