Electromagnetic Rocking Chair

Abstract

An electromagnetic rocking chair is disclosed. The electromagnetic rocking chair includes a fixing part, a moving part being moveable relative to the fixing part, at least two electromagnets disposed on the fixing part, and at least one permanent magnet disposed on the moving part. When the moving magnet moves to a position over the fixed magnet, the fixed magnet is electrified to produce repulsion forces due to homopolar repulsion, whereby the repulsion forces and the inertial force generated during the course of movement of the moving magnet can move the electromagnetic rocking chair smoothly.

What is claimed is: 
     
         1 . An electromagnetic rocking chair comprising:
 a fixing part including a plurality of electromagnets and at least one sensor;   a moving part being moveable relative to the fixing part, including a plurality of permanent magnets; and   a control module for controlling at least one magnetic force exerted by at least one of the electromagnets on the moving part,   wherein the at least one sensor is capable of detecting a state of the moving part.   
     
     
         2 . The electromagnetic rocking chair of  claim 1 , wherein the sensor is a magnetic sensor. 
     
     
         3 . The electromagnetic rocking chair of  claim 2 , wherein the magnetic sensor is configured to detect the moving state of the moving part by detecting whether at least one of the permanent magnets on the moving part is moved to a position over at least one of the electromagnets. 
     
     
         4 . The electromagnetic rocking chair of  claim 3 , wherein the number of magnetic sensors is at least two. 
     
     
         5 . The electromagnetic rocking chair of  claim 4 , wherein movement of the moving part is initiated from at least one signal sent by the control module to at least one of the electromagnets. 
     
     
         6 . The electromagnetic rocking chair of  claim 5 , wherein movement is initiated when the chair is positioned on a non-horizontal or sloping surface. 
     
     
         7 . The electromagnetic rocking chair of  claim 5 , wherein movement is initiated by activating a repulsion force from at least one of the electromagnets that is not directly underneath at least one of the permanent magnets in the moving part. 
     
     
         8 . The electromagnetic rocking chair of  claim 1 , wherein the state of the moving part is stationary. 
     
     
         9 . The electromagnetic rocking chair of  claim 8 , wherein the stationary position of the moving part is recognized by the control module to be generally above one of the electromagnets. 
     
     
         10 . The electromagnetic rocking chair of  claim 1 , wherein the state of the moving part is moving. 
     
     
         11 . The electromagnetic rocking chair of  claim 10 , wherein the moving position of the moving part is recognized by the control module to be generally above one of the electromagnets. 
     
     
         12 . The electromagnetic rocking chair of  claim 1 , wherein the number of the permanent magnets is at least two. 
     
     
         13 . The electromagnetic rocking chair of  claim 1 , wherein the number of sensors is four, and the number of permanent magnets is three. 
     
     
         14 . The electromagnetic rocking chair of  claim 13 , wherein at least one sensor comprises three reed switches connected in series. 
     
     
         15 . The electromagnetic rocking chair of  claim 6 , wherein the control module comprises: a fourth pin of a first control chip coupled to a positive pole of a first power supply; a third pin of the first control chip connected to a power indication lamp by a first resistor; a seventh pin of the first control chip connected to a switch; fifth, sixth, ninth and tenth pins of the first control chip connected to first, second, third, and fourth sensors; a second pin of the first control chip connected to a first triode by a second resistor, wherein the first triode is connected to a second triode and a third triode; a second power supply connected to a first electromagnet by the second triode, wherein the first electromagnet is simultaneously connected to a second, a third, a fourth and a fifth diode to rectify output; a first pin of the first control chip connected to a seventh triode by a third resistor, wherein the seventh triode is connected to a sixth triode and an eighth triode; a third power supply connected to the second electromagnet by the sixth triode, wherein the second electromagnet is simultaneously connected to a sixth, a seventh, an eighth and a ninth diode to rectify output; a fourteenth pin of the first control chip connected to an eleventh triode by a fourth resistor, wherein the eleventh triode is connected to a twelfth triode and a thirteenth triode; a fourth power supply connected to the third electromagnet by the twelfth triode, wherein the third electromagnet is simultaneously connected to a tenth, an eleventh, a twelfth and a thirteenth diode to rectify output; a twelfth pin of the first control chip connected to a fourth triode by a fifth resistor and to a fifth triode by a sixth resistor, wherein the fourth triode and the fifth triode switch the working states of the first electromagnet and the second electromagnet; and a thirteenth pin of the first control chip connected to a ninth triode by a seventh resistor, and to a tenth triode by a eighth resistor, wherein the ninth triode and the tenth triode switch the working states of the first electromagnet and the third electromagnet. 
     
     
         16 . The electromagnetic rocking chair of  claim 15 , wherein the control module further comprises a second control chip being capable of alternately outputting a low/high electrical level, when the electronic rocking chair is loaded in a static state before powered on, after a power switch is switched on, the second control chip of the control module alternately outputs the high/low electrical level, wherein the first, second, and third triodes are defined as a first group triodes, the sixth, seventh, and eighth triodes are defined as a second group triodes, and the eleventh, twelfth and thirteenth triodes are defined as a third group triodes, the three group triodes alternately work to cause a corresponding electromagnet to produce an alternate magnetic field, thereby exerting a push-up force to at least one of the permanent magnets. 
     
     
         17 . The electromagnetic rocking chair of  claim 1 , wherein the fixing part comprises a base disposed generally horizontal and a support frame, wherein a first end of the support frame is connected to a side of the base, and an acute angle is defined between the support frame and the base in the working state, and wherein the moving part comprises a bearing shelf, wherein the bearing shelf is hingedly attached to the fixing part at a second end by a suspension rod. 
     
     
         18 . The electromagnetic rocking chair of  claim 17 , wherein at least one of the permanent magnets is disposed on a bottom of the bearing shelf. 
     
     
         19 . The electromagnetic rocking chair of  claim 18 , wherein at least one of the electromagnets is located on the base where the electromagnet can exert a magnetic force on at least one of the permanent magnets in different time when the moving part is moved. 
     
     
         20 . An electromagnetic rocking chair, comprising:
 a base including a plurality of electromagnet and a plurality of sensors;   a support frame, wherein a first end is connected to a side of the base;   a bearing shelf including a plurality of permanent magnets;   at least one suspension rod, wherein a first end of the at least one suspension rod is hingedly connected to a second end of the support frame, and a second end of the at least one suspension rod is connected to the bearing shelf, such that a least a portion of the bearing shelf hangs above at least a portion of the base; and   a control module for controlling at least one magnetic force exerted by at least one of the electromagnets in the base.