Load transmission mechanism for training apparatus, and training apparatus incorporating the same

Abstract

A load transmission mechanism for training apparatus is disclosed, comprising a main drive shaft unit, an intermediate shaft unit, and a perpendicular shaft unit. The mechanism utilizes a transmission chain and sprockets to transfer rotational force, with bevel gears enabling a change in rotational direction. The system includes a load applying unit that allows for adjustable tension, making it suitable for various training intensities. The gripping portion may be annular, enhancing user interaction. This mechanism is designed to provide smooth and adjustable resistance, improving the effectiveness and versatility of training apparatus.

What is claimed is: 
     
         1 . A load transmission mechanism for training apparatus, comprising:
 a main drive shaft unit including an input unit connected to an end of the main drive shaft unit, to which input unit a user applies force, wherein the main drive shaft unit rotates along with the input unit;   an intermediate shaft unit that rotates in conjunction with the rotation of the main drive shaft unit;   a first rotation transmission unit that is linked between the main drive shaft unit and the intermediate shaft unit and is used to transmit a rotary motion between the main drive shaft unit and the intermediate shaft unit;   a second rotation transmission unit that is linked between the intermediate shaft unit and a perpendicular shaft unit that is perpendicular to the intermediate shaft unit, wherein the second rotation transmission unit is used to transmit a rotary motion between the intermediate shaft unit and the perpendicular shaft unit;   a sliding shaft unit that is subject to external tension and is supported by a bearing and allowed to reciprocate in an axial direction of the bearing;   a linear motion guide unit including a connecting and fixing unit that connects the main drive shaft unit, the intermediate shaft unit, the perpendicular shaft unit, and the bearing, wherein the linear motion guide unit guides the connecting and fixing unit in a linear direction that is parallel to a direction of extension of the first rotation transmission unit;   a tensile member that is connected to the sliding shaft unit, transmits the tension, and changes a direction of extension in accordance with a movement of the sliding shaft unit in the axial and linear directions; and   a link mechanism that is connected to the perpendicular shaft unit and the sliding shaft unit at both ends thereof and converts a rotational movement of the perpendicular shaft unit into a reciprocating movement of the sliding shaft unit.   
     
     
         2 . The load transmission mechanism for training apparatus according to  claim 1 , wherein the input unit is a gripping portion gripped by the user or a foot rest for the user. 
     
     
         3 . The load transmission mechanism for training apparatus according to  claim 1 , further comprising a connector for connecting the load transmission mechanism to a training apparatus. 
     
     
         4 . The load transmission mechanism for training apparatus according to  claim 1 , wherein
 the first rotation transmission unit is a transmission chain,   the main drive shaft unit includes a main drive shaft sprocket,   the intermediate shaft unit includes an intermediate shaft sprocket, and   the transmission chain is suspended between the main drive shaft sprocket and the intermediate shaft sprocket.   
     
     
         5 . The load transmission mechanism for training apparatus according to  claim 1 , wherein
 the second rotation transmission unit includes:
 an intermediate shaft bevel gear that is provided in the intermediate shaft unit, and 
 a perpendicular shaft bevel gear that is provided in the perpendicular shaft unit and in tooth mesh with the intermediate shaft bevel gear. 
   
     
     
         6 . The load transmission mechanism for training apparatus according to  claim 2 , wherein the gripping portion is annular. 
     
     
         7 . The load transmission mechanism for training apparatus according to  claim 1 , wherein the tension is generated by a load applying unit that freely adjusts a magnitude of a load of the training apparatus. 
     
     
         8 . A training apparatus comprising the load transmission mechanism for training apparatus  45  according to  claim 1 .