MOTOR, CRADLE HEAD AND PHOTOGRAPHING DEVICE
FIG4 is a view of a partial structure of an electric motor shown in FIG3 from another angle
Referring to FIG4 at the same time, a first positioning structure 1115 is formed on the first body 111. The first positioning structure 1115 is used to determine a relative mounting position between the magnetic ring 113 and the first body 111. In some embodiments, the first positioning structure 1115 is a slot. Specifically, a step portion 1116 is formed in the first body 111. The step portion 1116 is annular-shaped. The inner diameter of the step portion 1116 is smaller than the inner diameter of the first side wall 1112, such that the step portion 1116 protrudes from the inner surface of the first side wall 1112. The first positioning structure 1115 is the slot formed on the step portion 1116. The first positioning structure 1115 is formed into a surface of the step portion 1116 facing away from the first bottom wall 1111.
view
11
electric motor electric motors
1114
first shaft
1116
step portion
1115
first positioning structure
1113
first limiter
113
magnetic ring
1131
second positioning structure
['1. A gimbal (10), comprising: an electric motor (11); and a rotation bracket (12) connected to the electric motor (11) and driven by the electric motor (11) to rotate, wherein the electric motor (11) includes: a first body (111); a second body (112); a magnetic ring (113) disposed in the first body (111); a position sensing assembly (115) disposed in the second body (112); and a mechanical limit mechanism disposed between the first body (111) and the second body (112) to define a limiting position of the first body (111) when rotating relative to the second body (112), wherein: a positioning structure (1131) is formed on the magnetic ring (113) in a position where a pre-determined magnetic field of the magnetic ring (113) is located; and when the first body (111) rotates relative to the second body (112) to the limiting position, the position sensing assembly (115) is capable of sensing a pre-determined magnetic field signal.', '4. The gimbal (10) of claim 1, wherein: the magnetic ring (113) includes a multipole magnetic ring (113); and the second positioning structure (1131) is formed at a position having a peak-to-peak value of one pair of magnetic poles of the magnetic ring (113).', '6. The gimbal (10) of claim 5, wherein: a first limiter (1113) is formed protruding from the first bottom wall (1111); a second limiter (1124) is formed on the second body (112) and capable of cooperating with the first limiter (1113); and the first limiter (1113) and the second limiter (1124) together form the mechanical limit mechanism.', '8. The gimbal (10) of claim 1, wherein: the first body (111) includes a first shaft (1114); and the first shaft (1114) and the second body (112) are capable of rotatably cooperating with each other, such that the first body (111) and the second body (112) are capable of rotatably connecting one to another.']