Abstract:
PURPOSE: A nest type torsional damper for an electric machine is provided to reduce the whole length of a generator facility of a driving system, thereby more simplifying it. CONSTITUTION: A nest type torsional damper for an electric machine includes a shaft(20), a shaft segment(26), and a shaft slot(38). The shaft segment has a circulation type around the shaft. The shaft segment is automatically connected to the shaft. The shaft slot increases the torsional compliance of the shaft segment. The shaft slot extends through the wall(40) of the shaft segment. The shaft slot is materially extended to longitudinal direction according to the shaft segment. The shaft segment is connected to the shaft through an end segment.
Abstract:
PURPOSE: A rotator for a permanent magnet electric machine is provided to maintain a plurality of permanent magnets between a rotator disk and a retaining ring in an axial direction by fixing the retaining ring to the second end of a magnet support band. CONSTITUTION: A rotator disk is radially extended from a central axis(18) of a rotator(12). A magnet retaining tap is radially extended from a magnet retaining band(30). A retaining unit fixes the magnet retaining band to the rotator disk. The retaining unit includes a plurality of mechanical coupling units. A permanent magnet(14) is radially maintained between the magnet retaining tap and the magnet retaining band.
Abstract:
PROBLEM TO BE SOLVED: To provide a linear actuator having increased efficiency and decreased wear due to sliding friction. SOLUTION: A ball screw 205 is powered by an electric motor. A ball bearing spline is integrated into a translating nut 204, and comprises an outer race 201, an inner race, or a load path 202, a ball return path 203, and a plurality of rolling elements, or bearing balls 206. As the ball screw 205 rotates, the ball bearing spline forces the translating nut 204 to move in a linear direction, reacting the torque from the rotation of ball screw 205. The plurality of rolling elements 206 circulate continuously through the inner race 202 to the outer race 201 via the ball return path 203, and then back into the inner race 202, thus allowing the ball bearing spline to operate over an unlimited linear stroke of translating nut 204. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a generator assembly adapted to a shift in a positional relation of a driving shaft for an auxiliary pulley with respect to a crank shaft.SOLUTION: A deflection joint member 40 connects the driving shaft 36 for the auxiliary pulley functionally to the crank shaft, in a motor generator 2. The deflection joint member 40 includes a plurality of flexible drive rings 64-66 and a shaft attaching plate 168. The adjacent drive rings selected from the plurality of flexible drive rings 64-66 are connected each other through a body 82 in connection areas 91, 92, a connection area 93 and a connection area opposed to the connection ares 93. The connection area 93 and the connection area opposed to the connection area 93 are offset therein by 90° from the connection ares 91, 92. The respective flexible drive rings 64-66 and the shaft attaching plate 168 are thereby functioned as springs.
Abstract:
PROBLEM TO BE SOLVED: To deal with a transient force spike without enlarging a linear actuator. SOLUTION: The actuator (100) includes: a differential (105) comprising a gear train comprising a first leg (106a) and a second leg (106b); a motor (101) configured to rotationally power a ball screw (104) through the first leg (106a) of the differential (105); and a brake (103) connected to the second leg (106b) of the differential (105). The brake (103) has a holding force, and is configured to dissipate the torque in the differential (105) when a torque in the differential (105) exceeds the holding force by the transient force spike. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To internally absorb an energy generated by the inertia of a motor when an actuator 12 is stopped by a stopper at a travel limiting position. SOLUTION: An actuator 12 has a sleeve 30 that acts a linear motion relative to a housing 19, and a ball screw 28 is disposed within the sleeve 30. The ball screw 28 is rotary-driven by a motor 22 via a gear box 24, and the sleeve 30 moves forward and backward via a ball 29. A stopper 34, which is supported via a compliant member 40 at the front edge of the ball screw 28, engages with the stopper 34 on an end 32 at a travel limiting position. The compliant member 40 consists of a twisted spring sequentially coupling concentrically-arranged tubular members 42, 44, and 46, and absorbs an energy generated by the ball screw 28 to attempt to keep rotation by the inertia. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a hybrid cascading lubrication and cooling system (200, 400) for an electrical machine (102) with nested stages. SOLUTION: The electrical machine (102) includes an inner nested stage (444) nested with respect to an outer nested stage (446). An oil pump (222) is coupled to an oil pump inlet tube (226) to draw oil from an oil sump (224), and a cooling core (230) to distribute pumped oil within the electrical machine (102). A rotor member (212) is coupled to the inner nested stage (444) and the outer nested stage (446). The rotor member (212) centrifugally pumps oil from the cooling core (230) through inner radial holes (424) and outer radial holes (436) in the rotor member (212) upon rotation about a central axis (216) of the electrical machine (102). COPYRIGHT: (C)2011,JPO&INPIT