Motion device for children
Various embodiments of the present invention are directed to a children's motion device configured to oscillate a child support about a substantially upright axis of rotation. In various embodiments, the portion of the child support configured for supporting the head of a child positioned therein is configured to remain substantially aligned with the axis of rotation as the child support oscillates.
1. A children's motion device comprising:
a frame configured to rest on a support surface; and
a child support operatively connected to the frame and configured for oscillating about a substantially upright axis of rotation;
wherein at least a portion of the child support is configured for supporting the head of a child positioned in the child support, and wherein the child support is operatively connected to the frame such that, as the child support oscillates about the axis of rotation, the portion of the child support configured for supporting the child's head remains substantially aligned with the axis of rotation.
2. The children's motion device of claim 1 , further comprising at least one rotating arm rotatably connected to the frame and configured for oscillating about the axis of rotation;
wherein the child support is operatively connected to the rotating arm and configured for rotating with the rotating arm about the axis of rotation.
3. The children's motion device of claim 1 , wherein the axis of rotation is offset from a vertical direction perpendicular to the support surface.
4. The children's motion device of claim 3 , wherein the axis of rotation is offset between 5 and 25 degrees from the vertical direction.
5. The children's motion device of claim 1 , wherein the angle of the child support with respect to the axis of rotation can be selectively adjusted by a user.
6. The children's motion device of claim 1 , further comprising a drive system configured to oscillate the rotating arm and child support about the axis of rotation such that the amplitude of the child support's oscillating motion remains substantially constant.
7. The children's motion device of claim 6 , wherein the drive system is an electromagnetic drive system comprising:
a first magnetic component operatively connected to the frame;
a second magnetic component operatively connected to the child support, wherein at least one of the first and second magnetic components comprises an electromagnet;
a motion sensor configured to generate a signal indicative of an amplitude of the child support's motion; and
a control circuit configured to:
receive a signal from the motion sensor;
compare the signal from the motion sensor with a value indicative of a goal amplitude for the child support; and
generate an electrical signal based on the comparison that causes electric current to be supplied to the electromagnet thereby generating a magnetic force between the first magnetic component and second magnetic component that causes the child support to oscillate with an amplitude nearer to the goal amplitude.
8. The children's motion device of claim 7 , further comprising at least one rotating arm rotatably connected to the frame and configured for oscillating about the axis of rotation;
wherein the child support is operatively connected to the rotating arm and configured for rotating with the rotating arm about the axis of rotation; and
wherein the second magnetic component is connected to the rotating arm.
9. The children's motion device of claim 7 , wherein the motion sensor comprises an infrared sensor and a reflector, wherein one of the infrared sensor and reflector is operatively connected to, and configured to oscillate with, the child support, and wherein the other of the infrared sensor and reflector is operatively connected to the frame.
10. The children's motion device of claim 7 , further comprising one or more user controls configured to enable a user to select from two or more predefined amplitude settings; and
wherein the control circuit is further configured for defining an amplitude setting selected by the user as the goal amplitude.
11. The children's motion device of claim 1 , wherein the child support comprises a support frame and a fabric cover suspended from the support frame.
12. The children's motion device of claim 1 , wherein the child support comprises a child seat having a substantially rigid shell.
13. The children's motion device of claim 1 , wherein the portion of the child support configured for supporting the head of a child comprises a padded head rest.
14. The children's motion device of claim 1 , further comprising a user-controllable vibration device configured for transmitting vibrations through the child support.