3results about How to "Increase winding density" patented technology

The invention discloses a vehicle-mounted special-shaped structure self-adaptive loudspeaker system, which relates to the technical field of electroacoustic transducers and vehicle-mounted audio systems and comprises a special-shaped vibrating diaphragm module, a magnetic circuit driving module and a boundary coupling module. The special-shaped vibrating diaphragm module is in a non-axisymmetric shape, and a non-uniform stiffness gradient is constructed through local physical thickening or carbon fiber reinforcement, so that the stiffness of the vertex is greater than that of the center to suppress segmentation vibration; the magnetic circuit driving module utilizes asymmetric magnetic gaps with gradually-changed widths to be matched with variable-density coils to balance stress distribution of long and short shafts so as to correct driving distortion; the boundary coupling module integrates a shape memory alloy framework and a flexible sealing body, and self-adaptive radial expansion locking of a mounting interface is achieved. Through the design, the problems of vibration mode disorder and complex space sealing adaptation of the special-shaped loudspeaker are solved, sound short circuit is effectively eradicated, resonance is isolated, and the tone quality reduction degree and transient response performance of a non-standard installation position in a cabin are improved.

The application belongs to the technical field of winding machines, and discloses an automatic wire spool winding machine, which comprises a bottom layer frame, a middle layer frame, a winding roller, a driving assembly, a rotating shaft, the rotating shaft is parallel to the winding roller, a rotating seat is rotationally arranged on the rotating shaft, an installation box is arranged on the rotating seat, a compression roller is rotationally arranged on one side of the installation box close to the winding roller, an opening is formed in the one side of the installation box close to the winding roller, a pushing piece is slidably arranged in the opening along the length direction of the winding roller, a reciprocating assembly is arranged on the installation box, a connecting rod is arranged on one side of the rotating seat close to the winding roller, and a tension spring is arranged between the connecting rod and the bottom layer frame. The tension spring provides a continuous pulling force of the compression roller to the winding roller through the rotating seat, so that the compression roller clamps the wire, and winding loosening and displacement are avoided; the driving assembly drives the winding roller to rotate clockwise to provide power, and the reciprocating assembly drives the pushing piece to reciprocate along the winding roller, so that the wire is uniformly distributed and accumulated. The wire spool edge wire is flush, and the wire coil is more beautiful.

The invention relates to a rotor of an electric motor, the rotor comprising a rotor stack arranged on a rotor shaft of the rotor, and the rotor stack comprising a rotor yoke and a plurality of rotor teeth, each carrying an excitation winding. The rotor further comprises at least two segments which at least divide the rotor stack in the circumferential direction of the rotor, each segment comprising at least one rotor tooth with the excitation winding thereof, and at least one part of the segments comprising a section of the rotor yoke which is embodied in one piece with the corresponding rotor tooth of the segment. In this case, the sections are joined to each other via a force-fitting and / or form-fitting connection. The connection is at least partially established in such a way that the segments are clamped against each other by a force acting on the rotor stack, the force being formed as a result of a shaft-hub connection present between the rotor stack and the rotor shaft. The invention further relates to a method for producing a rotor.