176results about How to "Increase the number of laps" patented technology

Permanent magnets 52a1, 52a2 are inserted into magnet insert holes 51a1, 51a4 formed in a main magnetic pole 50A of a rotor 50. An outer circumferential surface of the rotor includes a first outer circumferential surface portion 50a which intersects with a d-axis and second outer circumferential surface portions 50da, 50ab which intersect with a q-axis. A radius R2 of curvature of the second outer circumferential surface portions 50da, 50ab is larger than a radius of curvature of the first outer circumferential surface portions 50a. Recesses 50a1, 50a2 are formed in the second outer circumferential surface portions 50da, 50ab and in a position to face end walls 51a2, 51a5 of the magnet insert holes 51a1, 51a4 which are adjacent to the outer circumferential surface of the rotor. It is constructed such that [(74 / P)°≦θ≦(86 / P)°] and [(16 / P)°≦α≦(48 / P)°], where θ is a mechanical angle of the first outer circumferential surface portion 50a, P is the number of pairs of poles of the rotor 50, and α is a mechanical angle of the recesses 50a1, 50a2.

In a spindle motor in which teeth portions of a stator core formed by laminating magnetic plates are bent in order to increase the number of turns of the stator windings, a gap in the teeth portions between the magnetic plates is avoided and a precise attractive force adjustment becomes possible. The stator core is bent such that its teeth portions faces a surface of a rotor magnet at right angles, and the teeth portions and salient pole arm portions around which windings are wound are substantially parallel to each other. The salient pole arm portions locate approximately halfway between a lower surface of a hub and an upper surface of a base. Further, a thickness of a magnetic plate is set to be 0.5 to 0.9 times that of other portions.

A lens drive device may include a movable lens body provided with a lens, a support body which movably supports the movable lens body through a plate spring in an optical axis direction, and a magnetic drive mechanism for driving the movable lens body in the optical axis direction. The plate spring may include an outer side connecting part connected with the support body, an inner side connecting part connected with the movable lens body, and an arm part which is connected with the inner side connecting part and the outer side connecting part through an inner connecting portion and an outer connecting portion. The arm part may include a meandering part which comprises a plurality of extending parts which is extended in a radial direction is serially connected through inner side turning portions and outer side turning portions.

The present invention relates an electric rotating machine comprising a plurality of phase coils each composed of a plurality of partial coils each made by connecting segments each composed of an inside-slot conductor portion to be accommodated in each of slots of each of phase slot groups made in a stator core and an outside-slot conductor portion protruding from the slot. Of the plurality of partial coils constituting each of the phase coils, in each of the partial coils to be connected to an input / output terminal, its inside-slot conductor portion is accommodated in the slot other than end portions of the phase slot group in a circumferential direction of the stator core. This reduces the electric potential difference between the outside-slot conductor portion continuing thereinto and the outside-slot conductor portion of an adjacent phase coil, thereby improving the insulating performance.

A bobbin includes a spool portion having a hollow circular cylinder shape and adapted to have a wire wound thereon in multilayer alignment; a flange integrally disposed at one end of the spool portion; and a terminal block integrally disposed at the flange and adapted to terminate the wire, wherein a formula: D×N−D / 2□L<D×N+D / 2 is established where L is the effective length of the spool portion, D is the diameter of the wire, and N is the number of turns of the wire for the first layer of the multilayer alignment.

A starter-generator system is configured to supply power to an aircraft electrical bus having a rated AC voltage magnitude, or receive power from a start converter, and includes a rotor and a stator. The stator is disposed at least partially around at least a portion of the rotor and has at least one multi-phase stator winding set wound thereon that has an increased number of turns per phase that is greater than a least number of turns per phase needed to supply power to an aircraft electrical bus at the rated AC voltage magnitude. The increased number of stator turns results in reduced current drawn by the starter-generator during the motor mode, which improves the efficiency and introduces other benefits to the overall starting system.

The invention relates to a combined type oil-water separating system for onshore treatment stations and offshore oil production platforms, wherein a liquid inlet and a liquid outlet of a current divider are communicated with a horizontal total liquid inlet pipe, a vertical pipe and a lower horizontal pipe; the vertical pipe is communicated with a bend pipe; the lower horizontal pipe is connected with an input port of a helical pipe, the helical pipe is connected with the inner part of a fourth separating box body, and communicated with a second settlement separating box body, and the top part of the helical pipe is communicated with the top part of a fourth settlement separating box body by a middle pipe; the outlet and the middle part of the bottom part of the side wall of the fourth settlement separating box body, which corresponds to the inlet, is provided with horizontal drain pipes and a horizontal oil discharge pipe respectively, and the other end of the horizontal oil discharge pipe penetrates the middle part of a third settlement separating box body; an upper horizontal pipe is communicated with a first helical pipe, the other outlet of the first helical pipe is connected with the inner part of the third settlement separating box body, and the bottom parts and the side walls of the top parts of the first and the third settlement separating box bodies are connected by pipes; the two horizontal drain pipes are provided with a water outlet pipe and an oil outlet pipe respectively.

A lens drive device may include a movable lens body provided with a lens, a support body which movably supports the movable lens body through a plate spring in an optical axis direction, and a magnetic drive mechanism for driving the movable lens body in the optical axis direction. The plate spring may include an outer side connecting part connected with the support body, an inner side connecting part connected with the movable lens body, and an arm part which is connected with the inner side connecting part and the outer side connecting part through an inner connecting portion and an outer connecting portion. The arm part may include a meandering part which comprises a plurality of extending parts which is extended in a radial direction is serially connected through inner side turning portions and outer side turning portions.

The invention discloses a flow control method and device as well as a clustering system, belonging to the technical field of a token-ring. The flow control method comprises the following steps of: receiving a token by a node in the token-ring, wherein the token-ring comprises at least two nodes; numbering information to be sent according to information relevant to node sending information in the token-ring, which is contained in the token; updating the token according to numbers of the information to be sent, and transmitting the updated token to the next node in the token-ring; and after the updated token is sent to the next node, sequentially sending the numbered information to each node in the token-ring. The flow control device comprises a receiving module, a numbering module, an updating module and a sending module. The clustering system comprises a plurality of nodes forming the token-ring. According to the flow control method and device as well as the clustering system provided by the invention, time for winding the token around the token-ring for one circle is greatly reduced; an information throughput of clustering the token-ring is improved; the transmission delay of the information is reduced; and the information instantaneity is improved.

In a method, a first electrode is moved to contact with first paired ends of first paired conductor segments. Next, a second electrode is moved opposing the first paired ends Electric conduction is established between the first electrode and the second electrode via the first paired ends of the first paired conductor segments to weld the first paired ends of the first paired conductor segments based on the electrical conduction therebetween. Next, the second electrode is moved opposing second paired ends of second paired conductor segments while the first electrode is kept in contact with the first paired ends. Electric conduction is established between the first electrode and the second electrode via the welded first paired ends and the second paired ends to thereby weld the second paired ends of the second paired conductor segments based on the electrical conduction therebetween.