Abstract:
PROBLEM TO BE SOLVED: To thin and miniaturize a switching mechanism, and to hold the position of a rotating body at non-energizing time at one switching position. SOLUTION: The switching mechanism is equipped with arm parts 132A and 132B provided on both sides with respect to the center of rotation of the rotating body 132; a 1st shape memory alloy member 104 attached to the arm part 132A on one side, with respect to the center of rotation and giving stronger tensile force, by energizing than at the non-energizing time, a 2nd shape memory alloy member 105 attached to the arm part 132B on the other side, with respect to the center of rotation and giving stronger tensile force by energizing than at the non-energizing time, and a control means for controlling the energizing of the respective 1st and 2nd shape memory alloy members 104 and 105 for controlling the tensile force to one arm part 132A and the other arm part 132B. Then, the tensile force at non-energizing time of the 2nd shape memory alloy member 105 is set stronger than the tensile force at the non-energizing time of the 1st shape memory alloy member 104. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To realize downsizing of a connector for connection in addition to ensuring of a proper connection condition to the connector for connection. SOLUTION: A connection pattern 16 configured by first patterns 17, 17, ... and second patterns 18, 18, ... alternatively and plurally arranged in the width direction; first contact parts 19, 19, ... and first lead parts 20, 20, ... formed narrower in width than the first contact parts are arranged at the first patterns; second contact parts 21, 21, ... and second lead parts 22, 22, ... formed narrower in width than the second contact parts are arranged at the second patterns. Then, widened parts 19a, 19a, ... are formed on the first contact parts; narrowed parts 21a, 21a, ... are formed on the second contact parts; both of the end edges of the widened parts and the narrowed parts are faced to be positioned; one-end having the maximum width of the widened parts and one-end having the minimum width of the narrowed parts are positioned at the same position in the length direction; and the other-end having the minimum width of the widened parts and the other-end having the maximum width of the narrowed parts are positioned at the substantially same position in the length direction. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve driving reliability of a switch mechanism using shape memory alloys by optimizing extension of the shape memory alloys. SOLUTION: The switch mechanism 1 is equipped with: a moving member 2 of movable along a specified track; and the two shape memory alloys 3a and 3b which are fitted through a through hole as a passed part of the moving member 2 and shrink in mutually opposite directions by being electrified to switch the position of the moving member 2. The two shape memory alloys 3a and 3b are extended around nearly polygonally in plane view from one end to the other end through the passed part. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To realize the miniaturization of constitution and accurate angle fixation in a rotation driving mechanism. SOLUTION: The rotation driving mechanism 1 is equipped with shape memory alloys 31 and 32 contracted by the supply of power in order to rotate and move a rotating plate 2 rotatably attached in an opposite direction, and position regulating magnets M1 and M2 for fixing the rotating plate 2 at a specified rotating position when the rotating plate 2 is rotated and moved by the contraction of the alloys 31 and 32. Then, the electronic equipment is the equipment such as a cellular phone using the mechanism 1. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To aim at further miniaturization and thinning of a vibration-generating device used for a cellular phone, etc. SOLUTION: This is a vibration-generation device 100, that generates vibration by having a rotor 120 and a stator 120 for supporting the rotor 110 rotatably, and rotating the rotor. The rotor is equipped with a bearing sleeve 160, consisting of a resin molded item and set rotatably outside a fixed shaft 124 erected in the stator, a magnet 170, and a weight 180 positioned in eccentric state from the bearing sleeve, and also the bearing sleeve and the magnet are united by the material resin of the bearing sleeve. The stator is equipped with a bottom plate 121, a cover plate 122, and a coil 140 opposed to the magnet, in addition to the fixed shaft, and the rotor is rotated by applying current to the coil, and the bearing sleeve is rotated in contact with the bottom plate or the cover plate by the adsorption power, working between the magnet and the bottom plate or the cover plate. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a vibration generation device which can be made thin and miniaturized and from which a large rotation unbalance energy can be taken out as a vibration component, and an electronic equipment having the vibration generation device. SOLUTION: A stator 83 has a stator yoke 47; a bearing device 110 fixed to the stator yoke 47 and rotatably supporting a shaft 91; and a coil 120 arranged in opposed to a magnet 85 at the stator yoke 47, rotating a rotor 80 against the stator 83 by a magnetic field generated by energization and a magnetic field of the magnet 85 making the shaft 91 as a center and formed by covering a conductive wire with an insulation material. The coil 120 has notch parts 140-143, and the electronic parts 71-74 are loaded at a position corresponding to the notch parts 140-143 of the coil 120 on the stator yoke 47. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To simplify the constitution of a rotor of an information input system which magnetically detects the amount of rotation of the rotor and the direction of its rotation in noncontact manner and reduce the thickness of the information input system. SOLUTION: The information input system is provided with a magnetic rotor 6 capable of rotating normally and reversely and a Hall element 3 arranged inside or outside the rotor 6. The rotor 6 comprises a main part 7 having one main surface part magnetized to an N pole and the other main surface part magnetized to an S pole and an auxiliary part 8 formed on at least one of the main surface parts and provided with a plurality of magnetic pole teeth 9 protruding to the inside or outside of the main part 7 and disposed at a specified pitch P. The Hall element 3 is disposed at a position where an intensity of a magnetic field received from the rotor 6 can be detected every time when the teeth 9 passes a vicinity along with the rotation of the rotor 6. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To respond to the necessity for adding functional circuits such as an offset correction circuit and the like for a detection amplifier and an extraneous noise filter circuit in detecting a zero cross of a counter electromotive force. SOLUTION: Terminal voltage values of terminals 21 to 23 are detected by terminal voltage detecting parts 141 to 143 which are held by holding circuits 151 to 153 or 154 to 156. Differences are made between the detected terminal voltage values by differential circuits 171 to 173 and the last detected terminal voltage values held by the holding circuits 151 to 153 or 154 to 156. The difference voltage value is compared with a reference voltage value for deciding a rated frequency by comparison circuits 175 to 177. The synchronous reference voltage value of a reference voltage source 111 is controlled by a control circuit 178 based on each compared result of the comparison circuits 175, 176 and 177. The frequency of a synchronous reference signal which is a basic operating time unit at synchronous driving is corrected, and a mover of a brushless motor 10 is placed in a stable synchronous drive condition before it is out of step from the synchronous driving condition. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a head actuator with a simple structure capable of downsizing and being low-profile and providing a high torque and to provide a magnetic recording and reproducing device. SOLUTION: A first wiring pattern 110 includes; a plurality of drive wiring pattern sections 130 for providing a torque to a rotor 40 by a magnetic interaction with an N pole when being energized; and a connection wiring pattern section 140 for electrically connecting a plurality of the drive wiring pattern sections 130. A second wiring pattern 120 includes; a plurality of the drive wiring pattern sections 130 for providing a torque to the rotor 40 by a magnetic interaction with an S pole when being energized; and the connection wiring pattern section 140 for electrically connecting a plurality of the drive wiring pattern sections 130 in series. The drive wiring pattern sections 130 have a plurality of wires radially extended from the axis and formed in parallel in a manner such that the direction of power application in the first wiring pattern 110 is opposite to that in the second wiring pattern 120.
Abstract:
PROBLEM TO BE SOLVED: To provide a head actuator and a magnet recording/reproducing device of thin and small-sized type when a magnetic head and an arm are rotated at a prescribed angle. SOLUTION: A motor 33 has a stator 43 with a shaft and a rotor 40 rotating relative to the stator 43. The rotor 40 is rotatably supported through a bearing relative to the shaft of the stator 43. The stator 43 has a driving coil 60 which is disposed with the shaft as a center. The rotor 40 has a rotor yoke 56 integrated with an arm 20, and a driving magnet 48 which is fixed at the rotor yoke 56 to face the coil 60 and of which the south pole and the north pole are alternately polarized with the shaft as the center. The rotor 40 rotates in the range of a prescribed angle relative to the stator 43 by means of a magnetic field generated by exciting the coil 60 and a field of the magnet 48. COPYRIGHT: (C)2003,JPO