Torque adjusting mechanism

Abstract

A torque adjusting mechanism including a shaft, a main body, and an adjusting device is provided. The main body has a circular wall and a through hole disposed therein for coupling to the shaft. The adjusting device disposed on the main body includes an adjusting hole, an adjusting button and an elastic body disposed inside the adjusting hole. The adjusting hole is perpendicular to the through hole and penetrates the circular wall. The adjusting button coupled to the adjusting hole can be adjusted along the adjusting hole. One end of the elastic body contacts with the adjusting button and the other end presses on the shaft. Therefore, the elastic body can provide a predetermined torque between the shaft and the main body and further increase the torque between the main body and the shaft.

1 . A torque adjusting mechanism, comprising: 
 a shaft;    a main body having a circular wall with a circular through hole formed in the center thereof for coupling to the shaft;    at least one adjusting device on the main body for adjusting the torque between the main body and the shaft, the adjusting device comprising: 
 an adjusting hole perpendicular to the wall of the through hole and penetrating through the circular wall of the main body;  
 an adjusting button coupled to the adjusting hole to move back and forth along the wall of the adjusting hole under an external force and to stay fixed inside the adjusting hole when there is no external force; and  
 an elastic body disposed inside the adjusting hole, with one end contacting with the adjusting button and the other end pressing on the shaft to provide a predetermined torque;  
 wherein when the adjusting button is adjusted to move toward the shaft, the adjusting button presses on the elastic body to press on the shaft for increasing the torque between the main body and the shaft.  
   
   
   
       2 . The torque adjusting mechanism of  claim 1 , further comprising a pad with an unclosed circular structure, disposed between the shaft and the main body; wherein the elastic body presses directly on the pad and indirectly on the shaft for distributing the pressing force.  
   
   
       3 . The torque adjusting mechanism of  claim 2 , wherein the pad is made of an erosion-resistant material to reduce the frictional erosion among the shaft, the main body, and the elastic body during the rotation.  
   
   
       4 . The torque adjusting mechanism of  claim 2 , wherein the shaft comprises an accommodation space formed on the circumference of the part where the shaft is coupled to the main body to accommodate the pad, preventing the pad from separating.  
   
   
       5 . The torque adjusting mechanism of  claim 2 , wherein the main body has an accommodation space formed on the circumference of the through hole to accommodate the pad, and prevent the pad from separating.  
   
   
       6 . The torque adjusting mechanism of  claim 2 , wherein each of the shaft and the main body respectively has an accommodation space formed on the walls where the shaft and the main body are coupled respectively, to prevent the pad from separating from the shaft and the main body, and to prevent the shaft and the main body from having axial deviations through the contact between the pads and the accommodation spaces.  
   
   
       7 . The torque adjusting mechanism of  claim 1 , wherein the shaft has a blocking portion disposed on one end of the shaft and protruding from the wall of the shaft, to prevent the main body from sliding out of the shaft.  
   
   
       8 . The torque adjusting mechanism of  claim 1 , wherein the elastic body comprises a longer elastic stroke to increase the torque adjusting range and precision.  
   
   
       9 . The torque adjusting mechanism of  claim 1 , further comprising a plurality of adjusting mechanisms disposed at equal intervals on the main body.  
   
   
       10 . An adjusting base for supporting an apparatus and adjusting the orientation of the apparatus, the adjusting base comprising: 
 a base; and    a torque adjusting mechanism provided between the base and the apparatus,    the torque adjusting mechanism comprising: 
 a shaft;  
 a main body having a circular wall with a circular through hole formed in its center for coupling to the shaft;  
 at least one adjusting device on the main body for adjusting the torque between the main body and the shaft, the adjusting device comprising at least: 
 an adjusting hole perpendicular to the wall of the through hole and penetrating through the circular wall of the main body;  
 an adjusting button coupled to the adjusting hole to move back and forth along the wall of the adjusting hole under an external force and to stay fixed inside the adjusting hole when there is no external force; and  
 an elastic body disposed inside the adjusting hole with one end contact with the adjusting button and the other end pressing on the shaft to provide a predetermined torque.  
 
   
   
   
       11 . The adjusting base of  claim 10 , further comprising an arm disposed between the apparatus and the torque adjusting mechanism to extend the distance between the apparatus and the torque adjusting mechanism.  
   
   
       12 . The adjusting base of  claim 10 , wherein the adjusting mechanism is disposed at equal intervals on the main body.  
   
   
       13 . The adjusting base of  claim 10 , wherein the apparatus is a thin display device.  
   
   
       14 . An adjusting base, comprising: 
 a base; and    a movable arm disposed between the base and an apparatus, comprising:    a plurality of torque adjusting mechanisms, each comprises: 
 a shaft;  
 a main body having a circular wall with a circular through hole formed in its center for coupling to the shaft;  
 at least one adjusting device on the main body for adjusting the torque between the main body and the shaft, the adjusting device comprising at least: 
 an adjusting hole perpendicular to the wall of the through hole and penetrating through the circular wall of the main body;  
 an adjusting button coupled to the adjusting hole to move back and forth along the wall of the adjusting hole under an external force and to stay fixed inside the adjusting hole when there is no external force; and  
 an elastic body disposed inside the adjusting hole with one end in contact with the adjusting button and the other end pressing on the shaft to provide a predetermined torque; and  
 
 a plurality of arms coupled to the torque adjusting mechanisms to form a multi-joint movable arm to support the apparatus and to adjust the orientation of the apparatus.  
   
   
   
       15 . The adjusting base of  claim 14 , wherein the adjusting mechanisms are disposed at equal intervals on the main body.  
   
   
       16 . The adjusting base of  claim 14 , wherein the apparatus is a thin display device.