Motor, gimbal having the motor, and image capturing device having the gimbal

Abstract

A motor assembly includes a stator directly fixed to a first rotating member, a rotator coupled to a second rotating member and rotatably connected with the stator, an electrical connecting device, and a Hall angular displacement sensor disposed on a side of the electrical connecting device. The rotator includes a rotating shaft with two ends. A first end of the rotating shaft is received in the first rotating member and a second end of the rotating shaft is received in the second rotating member. The electrical connecting device is configured to provide power to the motor assembly for driving the second rotating member to rotate with respect to the first rotating member. The Hall angular displacement sensor is configured to detect a positional relationship between the first rotating member and the second rotating member.

What is claimed is: 
     
         1 . A motor assembly, comprising:
 a stator directly fixed to a first rotating member;   a rotator coupled to a second rotating member and rotatably connected with the stator, the rotator including a rotating shaft with two ends, a first end of the rotating shaft being received in the first rotating member and a second end of the rotating shaft being received in the second rotating member;   an electrical connecting device configured to provide power to the motor assembly for driving the second rotating member to rotate with respect to the first rotating member; and   a Hall angular displacement sensor disposed on a side of the electrical connecting device and configured to detect a positional relationship between the first rotating member and the second rotating member.   
     
     
         2 . The motor assembly of  claim 1 , wherein the rotator is directly fixed to the second rotating member. 
     
     
         3 . The motor assembly of  claim 1 , wherein the rotator further includes:
 an upper bearing and a lower bearing received in the first rotating member and the second rotating member, respectively.   
     
     
         4 . The motor assembly of  claim 1 , further comprising:
 a magnet fixed to the first end of rotating shaft.   
     
     
         5 . The motor assembly of  claim 1 , wherein:
 the electrical connecting device includes a first surface and a second surface opposite to the first surface, the second surface facing the first end of the rotating shaft; and   the Hall angular displacement sensor is fixedly arranged on the first surface.   
     
     
         6 . The motor assembly of  claim 1 , wherein the electrical connecting device includes a PCB board or a flexible circuit board. 
     
     
         7 . The motor assembly of  claim 1 , wherein the rotator further includes a rotor disposed at the second end of the rotating shaft, the rotor surrounding at least a portion of the stator. 
     
     
         8 . The motor assembly of  claim 7 , wherein the electrical connecting device is further configured to:
 transmit a control signal to control a rotational angle of the rotor with respect to the stator for adjusting the positional relationship between the first rotating member and the second rotating member.   
     
     
         9 . A gimbal comprising:
 a first rotating member;   a second rotating member; and   a motor configured to drive the second rotating member to rotate with respect to the first rotating member, the motor including:
 a stator directly fixed to the first rotating member; 
 a rotator coupled to the second rotating member and rotatably connected with the stator, the rotator including a rotating shaft with two ends, a first end of the rotating shaft being received in the first rotating member and a second end of the rotating shaft being received in the second rotating member; 
 an electrical connecting device configured to provide power to the motor for driving the second rotating member to rotate with respect to the first rotating member; and 
 a Hall angular displacement sensor disposed on a side of the electrical connecting device and configured to detect a positional relationship between the first rotating member and the second rotating member. 
   
     
     
         10 . The gimbal of  claim 9 , wherein the rotator is directly fixed to the second rotating member. 
     
     
         11 . The gimbal of  claim 9 , wherein the rotator further includes:
 an upper bearing and a lower bearing received in the first rotating member and the second rotating member, respectively.   
     
     
         12 . The gimbal of  claim 9 , wherein the motor further includes:
 a magnet fixed to the first end of rotating shaft.   
     
     
         13 . The gimbal of  claim 9 , wherein:
 the electrical connecting device includes a first surface and a second surface opposite to the first surface, the second surface facing the first end of the rotating shaft; and   the Hall angular displacement sensor is fixedly arranged on the first surface.   
     
     
         14 . The gimbal of  claim 9 , wherein the electrical connecting device includes a PCB board or a flexible circuit board. 
     
     
         15 . The gimbal of  claim 9 , wherein the rotator further includes a rotor disposed at the second end of the rotating shaft, the rotor surrounding at least a portion of the stator. 
     
     
         16 . The gimbal of  claim 15 , wherein the electrical connecting device is further configured to:
 transmit a control signal to control a rotational angle of the rotor with respect to the stator for adjusting the positional relationship between the first rotating member and the second rotating member.   
     
     
         17 . An image capturing device comprising:
 a gimbal; and   a payload carried on the gimbal, wherein the gimbal includes:
 a first rotating member; 
 a second rotating member; and 
 a motor configured to drive the second rotating member to rotate with respect to the first rotating member, the motor including:
 a stator directly fixed to the first rotating member; 
 a rotator coupled to the second rotating member and rotatably connected with the stator, the rotator including a rotating shaft with two ends, a first end of the rotating shaft being received in the first rotating member and a second end of the rotating shaft being received in the second rotating member; 
 an electrical connecting device configured to provide power to the motor for driving the second rotating member to rotate with respect to the first rotating member; and 
 a Hall angular displacement sensor disposed on a side of the electrical connecting device and configured to detect a positional relationship between the first rotating member and the second rotating member. 
 
   
     
     
         18 . The image capturing device of  claim 17 , wherein the payload is connected with the second rotating member. 
     
     
         19 . The image capturing device of  claim 17 , wherein the payload is a camera or a sensor. 
     
     
         20 . The image capturing device of  claim 17 , wherein the motor further includes:
 a magnet fixed to the first end of rotating shaft.