Seat

Abstract

A seat is disclosed, which includes a first body, a second body, a bearing and at least one rolling part. The bearing is connected between the first body and the second body, and the bearing has a plurality of degrees of freedom so that the first body is able to move relatively to the second body. The rolling part is disposed between the first body and the second body so that the second body is able to rotate around a rotation center implemented by the bearing relatively to the first body through the rolling part. When the second body rotates relatively to the first body, the first body converts the status thereof relatively to the first body between a tilting status and a parallel status.

1 . A seat, comprising:
 a first body;   a second body;   a bearing, connected between the first body and the second body and having a plurality of degrees of freedom so that the first body is able to move relatively to the second body; and   at least one rolling part, disposed between the first body and the second body so that the second body is able to rotate around a rotation center implemented by the bearing relatively to the first body through the rolling part, wherein when the second body rotates relatively to the first body, the first body converts the status thereof relatively to the first body between a tilting status and a parallel status.   
     
     
         2 . The seat as claimed in  claim 1 , wherein the rolling part is disposed on one of the first body and the second body, the rest one of the first body and the second body has at least one dent, and when the rolling part rolls on the first body or the second body, the dent is located on the rolling path of the rolling part. 
     
     
         3 . The seat as claimed in  claim 2 , wherein when the rolling part is located at the dent, the first body takes the parallel status relatively to the second body; when the rolling part moves out of the dent, the first body takes the tilting status relatively to the second body. 
     
     
         4 . The seat as claimed in  claim 2 , wherein when the rolling part is located at the dent, the first body takes the tilting status relatively to the second body; when the rolling part moves out of the dent, the first body takes the parallel status relatively to the second body. 
     
     
         5 . The seat as claimed in  claim 1 , further comprising:
 a base, making the second body connected between the base and the first body; and   a driving force source, disposed on the base and connected to the second body so as to drive the second body to rotate relatively to the first body.   
     
     
         6 . The seat as claimed in  claim 5 , wherein the second body is substantially a worm gear and the driving force source is a worm engaged with the worm gear. 
     
     
         7 . The seat as claimed in  claim 1 , wherein the bearing is substantially a ball bearing.