MOTOR, CRADLE HEAD AND PHOTOGRAPHING DEVICE
FIG5 is a main view of an assembled structure shown in FIG4
When being assembled, the magnetic ring 113 is mounted inside the first housing space 111a of the first body 111. The first positioning structure 1115 and the second positioning structure 1131 are mutually engaged to confine the magnetic ring 113 inside the first body 111. The second positioning structure 1131 is separated from an end of the first positioning structure 1113 adjacent to the second positioning structure 1131 by a pre-determined angle a1 (referring to FIG5). In some embodiments, the angle a1 is about 5°. Of course, the angle a1 may increase or decrease according to actual requirements. For example, the angle a1 can be as small as about 0°, or as great as over 10° or multiple of 10°, and will not be described in detail.
view
1113
first limiter
113
magnetic ring
1131
second positioning structure
11
electric motor electric motors
['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.']