The present invention discloses a hand-held yo-yo ball capable of manually storing energy, comprising two rotating bodies and a connecting shaft, where each rotating body comprises a disk body and a shell; one disk body is internally provided with a clutch mechanism, the other disk body is internally provided with an energy storage mechanism; two ends of the connecting shaft are respectively connected with the clutch mechanism and the energy storage mechanism; the rotating body at the end where the clutch mechanism is located is manually rotated, energy is stored in the energy storage mechanism, then the meshing state of the clutch mechanism is manually removed, so that the energy storage mechanism releases the energy to drive the two rotating bodies to rotate synchronously. In this way, the yo-yo ball can be rotated without throwing a ball body of the yo-yo ball by a rope.

In an example embodiment, a yoyo includes an axle, a first body and a second body coupled to the axle, and a string windable about the axle within a gap between the first body and the second body. The first body includes an outer rim and multiple propeller blades that extend inward from the outer rim toward the axle. The gap between the first body and the second body is smaller than three times a diameter of the string. A diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim. An aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.

In an example embodiment, a yoyo includes an axle, a first body and a second body coupled to the axle, and a string windable about the axle within a gap between the first body and the second body. The first body includes an outer rim and multiple propeller blades that extend inward from the outer rim toward the axle. The gap between the first body and the second body is smaller than three times a diameter of the string. A diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim. An aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.

The present disclosure discloses a tornado yoyo, including two rotating disks and a connecting axle configured to connect back portions of the two rotating disks, in which a protruding cylinder provided with a bearing thereon is disposed in the rotating disk and located in the middle of the rotating disk; a rotating cap is disposed outside the rotating disk and provided with a connecting hole portion extending from the middle of the rotating cap to the rotating disk, and the connecting hole portion is sleeved on the bearing to realize a rotation of the rotating cap relative to the rotating disk; and an outer edge of the rotating cap is provided with an edgefold configured to envelop an edge of the rotating disk, so that when the yo-yo is held or pinched in a forward direction, the rotation of the rotating disk will not be influenced.

The present disclosure discloses a tornado yoyo, including two rotating disks and a connecting axle configured to connect back portions of the two rotating disks, in which a protruding cylinder provided with a bearing thereon is disposed in the rotating disk and located in the middle of the rotating disk; a rotating cap is disposed outside the rotating disk and provided with a connecting hole portion extending from the middle of the rotating cap to the rotating disk, and the connecting hole portion is sleeved on the bearing to realize a rotation of the rotating cap relative to the rotating disk; and an outer edge of the rotating cap is provided with an edgefold configured to envelop an edge of the rotating disk, so that when the yo-yo is held or pinched in a forward direction, the rotation of the rotating disk will not be influenced.

A device designed to spin in a user's hands may include a body with a centrally mounted ball bearing positioned within a center orifice of the body, wherein an outer race of the ball bearing is attached to the frame; a button made of a pair of bearing caps attached to one another through the ball bearing and clamped against an inner race of the ball bearing, such that when the button is held between a user's thumb and finger, the body freely rotates about the ball bearing; and a plurality of weights distributed at opposite ends of the body, creating at least a bipolar weight distribution.

A motorized yo-yo includes a body and a tether coupled to the body to support the body for rotation. A drive mechanism of the body drives rotation of the body when a user throws the yo-yo.

A motorized yo-yo includes a body and a tether coupled to the body to support the body for rotation. A drive mechanism of the body drives rotation of the body when a user throws the yo-yo.

In an example embodiment, a yoyo includes an axle, a first body and a second body coupled to the axle, and a string windable about the axle within a gap between the first body and the second body. The first body includes an outer rim and multiple propeller blades that extend inward from the outer rim toward the axle. The gap between the first body and the second body is smaller than three times a diameter of the string. A diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim. An aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.

In an example embodiment, a yoyo includes an axle, a first body and a second body coupled to the axle, and a string windable about the axle within a gap between the first body and the second body. The first body includes an outer rim and multiple propeller blades that extend inward from the outer rim toward the axle. The gap between the first body and the second body is smaller than three times a diameter of the string. A diameter of the axle is no larger than one sixth of the diameter of the first or second outer rim. An aggregate mass of the first and second outer rims is at least one quarter of an aggregate mass of the yoyo, string excluded.