4results about How to "Increase the air gap" patented technology

The invention relates to a connecting wire harness for a battery pack, which comprises a cable, one end of the cable is connected with an external joint for external equipment, and the other end of the cable is connected with a battery end connector; the battery end connector comprises a shell, a crimping type wiring terminal and an electrode column, the crimping type wiring terminal is arranged in the shell, a crimping cylinder of the crimping type wiring terminal is connected with the cable, the electrode column is arranged in the shell in a penetrating manner, and the tail end of the electrode column is vertically connected with the connecting end of the crimping type wiring terminal; a front end blind hole with a conical bottom face is formed in the front end face of the electrode column, the edge of the front end face of the electrode column extends forwards to form a sector-ring-shaped sector-ring column which is coaxial with the front end blind hole, the axial section of the sector-ring column is an inclined face inclining outwards in the axial direction, and the position, connected with the front end face of the electrode column, of the axial section of the sector-ring column is chamfered. According to the invention, the arc discharge problem can be well inhibited while the connection stability is ensured, and the safety is improved.

This utility model discloses a mover structure and a linear motor. The mover structure includes a mover yoke and multiple mover units. Each mover unit includes a mover tooth, a winding, a pole shoe, and two first permanent magnets. The pole shoe includes a main body and a side protrusion. Two mounting slots are spaced apart in the pole shoe. Each mounting slot includes a first slot segment and a second slot segment corresponding to the main body and the side protrusion, respectively. The bottom wall of the second slot segment has an opening. The two first permanent magnets are mounted in the two mounting slots. The pole shoe has a first chamfer structure at each edge on the outer side of the main body, at each edge of the mounting slot located at its opening, and at least one edge of the second slot segment located at its opening. This utility model helps to achieve thrust stability as much as possible while maintaining a relatively high thrust density.

The application discloses a high-torque-density double-winding permanent magnet motor based on a magnetic gear effect and relates to the technical field of motors.The application comprises a stator core, a fundamental wave winding, a harmonic wave winding, a modulation unit and a permanent magnet rotor; a half-closed slot is formed in the inner surface of the stator core, two sets of windings which are not coupled and have different pole pairs are placed in the slot, one set of the windings is the fundamental wave winding, and the other set of the windings is the harmonic wave winding; the modulation unit is composed of non-magnetic blocks and magnetic blocks which are alternately arranged along a circumference, is connected with the inner surface of the stator core, and only an air gap exists between the modulation unit and the permanent magnet rotor; the permanent magnet rotor is a magnetic gathering type permanent magnet rotor and comprises a tangential excitation permanent magnet and a magnetic separation slot structure. The two sets of windings can efficiently utilize the harmonic magnetic field and the fundamental wave magnetic field, the independent modulation unit is adopted to realize the optimal modulation ratio of the motor, the single air gap structure is beneficial to improving the working magnetic density of the motor, and the torque density of the motor driving system is effectively increased.

The utility model discloses a radial gas foil bearing capable of independently adjusting circumferential four-direction air gaps. The radial gas foil bearing structurally comprises a bearing sleeve, an air gap adjusting screw rod, a locking screw, a wedge-shaped push block, a supporting tile, a bump foil and a flat foil. The air gap adjusting screw drives the wedge-shaped push block to move axially, so that the position of the supporting tile is adjusted, the bump foil is pushed to be compressed or released, and accurate adjustment of the air gap is achieved; each air gap adjusting screw can independently control the corresponding push block, independent adjustment of air gaps in four directions is ensured, and high precision and flexibility are provided. According to the bearing structure, independent adjustment is achieved through an air gap adjusting mechanism formed by four sets of air gap adjusting screws, wedge-shaped push blocks, supporting tiles and bump foils, the performance of the bearing is optimized, load changes and air film rigidity are adapted, the stability and efficiency of a rotor system are improved, and the bearing structure adapts to various complex working conditions.