Sit-Up Exercising Apparatus

Abstract

A sit-up exercising apparatus includes at least one inclined abdominal board and a counting device mounted in the abdominal board. The counting device includes a support bracket secured in the abdominal board, a magnetic detector mounted on the support bracket, a movable member movably mounted on the support bracket and movable relative to the support bracket and the magnetic detector, a magnetic member mounted on the movable member to move with the movable member and movable to pass by the magnetic detector to produce multiple magnetic signals in the magnetic detector, and a transmission wire connected with the magnetic detector to transmit the magnetic signals in the magnetic detector. Thus, the counting device can count the times of the sit-up actions automatically so that the user needs not count the sit-up times by himself/herself during the exercising process.

1 . A sit-up exercising apparatus, comprising:
 at least one inclined abdominal board;   a counting device mounted in the abdominal board; wherein:   the counting device includes:   a support bracket secured in the abdominal board;   a magnetic detector mounted on the support bracket;   a movable member movably mounted on the support bracket and movable relative to the support bracket and the magnetic detector;   a magnetic member mounted on the movable member to move in concert with the movable member and movable reciprocally to pass by the magnetic detector to produce multiple magnetic signals in the magnetic detector;   a transmission wire connected with the magnetic detector to transmit the magnetic signals in the magnetic detector.   
     
     
         2 . The sit-up exercising apparatus of  claim 1 , wherein the counting device further includes:
 at least one elastic member biased between the support bracket and the movable member to drive the movable member to pivot outwardly relative to the support bracket and to move the magnetic member to space from the magnetic detector.   
     
     
         3 . The sit-up exercising apparatus of  claim 1 , wherein the abdominal board has an inner portion provided with a receiving space to receive the counting device. 
     
     
         4 . The sit-up exercising apparatus of  claim 1 , wherein the movable member of the counting device is located above the support bracket. 
     
     
         5 . The sit-up exercising apparatus of  claim 1 , wherein the movable member of the counting device is inclined relative to the support bracket at a normal state. 
     
     
         6 . The sit-up exercising apparatus of  claim 2 , wherein the movable member of the counting device is pushed by the elastic member to abut a top wall of the receiving space of the abdominal board. 
     
     
         7 . The sit-up exercising apparatus of  claim 1 , wherein the magnetic detector of the counting device is located above the support bracket. 
     
     
         8 . The sit-up exercising apparatus of  claim 1 , wherein the magnetic member of the counting device is located above the support bracket. 
     
     
         9 . The sit-up exercising apparatus of  claim 1 , wherein the magnetic member of the counting device is a magnet or an electromagnet. 
     
     
         10 . The sit-up exercising apparatus of  claim 2 , wherein the transmission wire of the counting device extends outwardly from the receiving space of the abdominal board. 
     
     
         11 . The sit-up exercising apparatus of  claim 1 , wherein the movable member is integrally formed with the support bracket. 
     
     
         12 . The sit-up exercising apparatus of  claim 11 , wherein the support bracket and the movable member form a substantially V-shaped elastic plate.