1. A microwave oven, comprising:
a main body having a cooking room;
a tray disposed on a bottom surface of the cooking room;
a motor to provide power to the tray; and
a gear assembly changing the power supplied by the motor to drive the tray, the gear assembly including a main gear connected to the motor and rotatable, and a planetary gear engaged with the main gear and rotatable, at least one of the main gear and the planetary gear including an eccentric shaft having an eccentric distance from a center of the main gear andor the planetary gear, respectively.
2. The microwave oven according to claim 1, wherein the tray includes a rectilinearly reciprocated sub-tray and a rotary tray rotated on the sub-tray.
3. The microwave oven according to claim 1, wherein a diameter of the main gear and a diameter of the planetary gear are substantially equal to each other, and the main gear’ and the planetary gear respectively include eccentric shafts.
4. The microwave oven according to claim 3, wherein an eccentric distance of the eccentric shaft of the main gear to a center of the main gear and an eccentric distance of the eccentric shaft of the planetary gear to a center of the planetary gear are equal to each other.
5. The microwave oven according to claim 2, wherein the gear assembly further includes a coupler connected to an upper surface of the planetary gear, the coupler connecting the rotary tray with the gear assembly.
6. The microwave oven according to claim 5, wherein the gear assembly further includes a guide protrusion connected to a lower surface of the planetary gear.
7. The microwave oven according to claim 6, wherein the bottom surface of the cooking room includes a base guide provided with a main gear shaft hole, through which an eccentric shaft formed on the main gear passes to be connected to the motor, and a guide groove, to which the guide protrusion is connected to be moved.
8. The microwave oven according to claim 7, wherein the base guide is formed integrally with the bottom surface of the cooking room.
9. The microwave oven according to claim 1, wherein the gear assembly further includes a stirrer to disperse high frequency radiation in the cooking room.
10. The microwave oven according to claim 2, wherein an upper surface of the sub-tray is disposed at a higher position than that of an upper surface of the rotary tray.
11. The microwave oven according to claim 10, wherein the rotary tray is received in a rotary tray reception part in the sub-tray.
12. The microwave oven according to claim 3, wherein the gear assembly further includes at least one gear guide surrounding circumferences of the main gear and the planetary gear to facilitate rotation of the main gear and the planetary gear when the main gear and the planetary gear are engaged with each other, and at least one casing surrounding external surfaces of the at least one gear guide.
13. The microwave oven according to claim 2, wherein the gear assembly further includes a connection member connecting the main gear and the planetary gear to facilitate rotation of the main gear and the planetary gear when the main gear and the planetary gear are engaged with each other.
14. The microwave oven according to claim 13, wherein the connection member includes a transmission protrusion formed at one end thereof to transmit power to rectilinearly reciprocate the sub-tray, and the sub-tray includes a transmission protrusion groove, into which the transmission protrusion is inserted to be guided.
15. The microwave oven according to claim 2, wherein the sub-tray has a circular shape, and is formed to have a smaller diameter than that of the rotary tray.
16. The microwave oven according to claim 15, wherein the sub-tray includes a fixing coupler fixed to a lower surface of the sub-tray and connected to the planetary gear.
17. The microwave oven according to claim 2, wherein a roller guide to facilitate rotation of the rotary tray on the sub-tray is disposed between the sub-tray and the rotary tray.
18. The microwave oven according to claim 17, wherein the roller guide is formed integrally with the sub-tray.
19. A tray apparatus of a microwave, the tray apparatus comprising:
a sub-tray rectilinearly reciprocated in a lengthwise direction of a cooking room of the microwave;
a rotary tray rotated on the sub-tray;
a motor to provide power to the sub-tray and the rotary tray; and
a gear assembly connected to the motor to operate the sub-tray and the rotary tray, the gear assembly including a main gear connected to the motor and rotatable and including an eccentric shaft, and a planetary gear engaged with the main gear and rotatable and including an eccentric shaft.
20. The tray apparatus according to claim 19, wherein diameters of the main gear and the planetary gear are equal to each other, and distances respectively from central points of the main gear and the planetary gear to the eccentric shafts of the main gear and the planetary gear are substantially equal to each other.
21. A tray apparatus of a microwave, the tray apparatus comprising:
a sub-tray rectilinearly reciprocated in a lengthwise direction of a cooking room;
a rotary tray rotated on the sub-tray;
a motor to provide power to the sub-tray and the rotary tray; and
a gear assembly connected to the motor to operate the sub-tray and the rotary tray, the gear assembly including a main gear connected to the motor and rotatable and including an eccentric shaft, and a planetary gear engaged with the main gear and rotatable.
22. The microwave oven according to claim 16, wherein the bottom surface of the cooking room includes a base guide provided with a main gear shaft hole, through which an eccentric shaft formed on the main gear passes to be connected to the motor, and a guide groove, to which the fixing coupler is connected to be moved.
23. A microwave oven, comprising:
a main body having a cooking room;
a tray disposed on a bottom surface of the cooking room, the tray being simultaneously rectilinearly reciprocated and rotated; and
a motor to provide power to the tray to rectilinearly reciprocate and rotate the tray.
24. The microwave oven according to claim 22, wherein the tray includes a sub-tray rectilinearly reciprocated in a lengthwise direction of the cooking room, and a rotary tray rotated on the sub-tray.
25. The microwave oven according to claim 24, further comprising a gear assembly including a main gear connected to the motor and rotatable and a planetary gear engaged with the main gear and rotatable, at least one of the main gear and the planetary gear including an eccentric shaft having an eccentric distance from a center of the main gear andor the planetary gear.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A pivot apparatus for a portable electronic device, comprising:
a first member comprising a hinge receiving portion;
a hinge body movably disposed in the hinge receiving portion;
a hinge head connected to the hinge body;
a second member rotatably disposed on the first member and having a first fitting hole to receive the hinge head; and
a base member disposed under the first member and having a retardant portion, wherein the hinge body is stopped by the retardant portion such that the hinge head connected thereto is received in the first fitting hole.
2. The pivot apparatus as claimed in claim 1, wherein the first member further comprises a rotating shaft opposite to the hinge receiving portion and the second member further comprises a second fitting hole opposite to the first fitting hole, the rotating shaft received in the second fitting hole.
3. The pivot apparatus as claimed in claim 1, wherein the second member further comprises an operation interface disposed thereon.
4. The pivot apparatus as claimed in claim 3, wherein the operation interface is a keypad module.
5. The pivot apparatus as claimed in claim 1, wherein the hinge body further comprises a spring disposed therein and connected to the hinge head.
6. A pivoting method for using in a portable electronic device including a first member and a second member, comprising the steps of:
placing a hinge body into a hinge receiving portion of the first member, wherein the hinge body moves inside the first member;
aiming a rotating shaft of the first member at a second fitting hole of the second member and fitting the rotating shaft into the second fitting hole;
aiming the hinge receiving portion of the first member at a first fitting hole of the second member;
pushing the hinge body in the hinge receiving portion toward the first fitting hole of the second member such that a hinge head connected to the hinge body moves into the first fitting hole; and
fitting a base member on the bottom of the first member so that a retardant portion of the base member stops the hinge body, wherein the hinge head is received in the first fitting hole.
7. The pivoting method as claimed in claim 6, wherein the steps of aiming a rotating shaft at the second fitting hole and aiming the hinge receiving portion at the first fitting hole are performed simultaneously.
8. The pivoting method as claimed in claim 6, wherein the rotating shaft is opposite to the hinge receiving portion and the second fitting hole is opposite to the first fitting hole.