36results about How to "Increase the number of winding turns" patented technology

The invention belongs to the technical field of cable production, and particularly relates to a rope rolling device with a degreasing function for cable production. In order to solve the problem thatan existing device is poor in utilization ratio, cannot clean greasy dirt on the surfaces of cables and cannot contract the cables better, the invention provides the scheme as follows: the rope rolling device comprises a base. Four supporting legs are welded to the outer wall of one side of the bottom of the base, a rolling device shell is connected to the outer wall of one side of the top of thebase through a bolt, a sliding groove is formed in the outer wall of one side of the top of the rolling device shell, a first electric slide block is slidably connected to the inner wall of the sliding groove, and a slide bar is welded to the outer wall of the bottom of the first electric slide block. The rolling device provided by the invention can carry more cables, guide the cable rolling direction and rolling order, prevent the cables from being entangled as the rolling order is disordered, guarantee that the surfaces of the cables are dry and prevent slip of the surfaces of the cables during use, and the diameter of a rolling rod is adjusted, so that the cables of various models are rolled conveniently.

The invention provides a screw of a screw vacuum pump, and belongs to the technical field of vacuum pumps. The problem that the screw of the existing screw vacuum pump cannot meet the specific process conditions at present is solved. The number of turns of the upper spiral groove of a suction part, in the screw of the screw vacuum pump, is 0.75-1.25; when the number of turns of the upper spiral groove of a compression transition part is 1, the number of turns of the upper spiral groove of an exhaust part is more than 3; when the number of turns of the upper spiral groove of the compression transition part is more than 1, the number of turns of the upper spiral groove of the exhaust part is 1.75-4. The screw of the screw vacuum pump has the advantages that the vacuum pump is high in ultimate vacuum, is stable in performance while the manufacturing cost is almost not increased, and then more types of screw vacuum pumps are available with a more widespread application domain. In the screw vacuum pump adopting the pitch variable screw provided by the invention, the compression ability is optimized by appropriately increasing the number of turns of the spiral groove as wound, the exhaust efficiency of the exhaust part is improved, the excessive compression phenomenon because the air in the exhaust part cannot be exhausted is alleviated, and then the unit energy consumption is reduced effectively.

The invention relates to a bicycle wireless charging device which comprises a center shaft communicating pipe, a crank and a charging mechanism, and the charging mechanism comprises a non-metal cylinder which is fixedly connected to a bicycle center shaft and inserted into the center shaft communicating pipe. The charging device comprises a non-metal cylinder, a center shaft communicating pipe, a transmitting end coil wound on the non-metal cylinder, a receiving end coil wound on the side wall of the center shaft communicating pipe and coupled with the transmitting end coil, a charging module fixed on the non-metal cylinder and connected with the transmitting end coil, and a rectification module fixed in the center shaft communicating pipe and connected with the receiving end coil. According to the bicycle wireless charging device, the receiving end coil is arranged in the hollow middle shaft communicating pipe, the structural design that the cylindrical sending end equipment is inserted in a matched mode is adopted, more space is provided, the number of winding turns of the induction coil and the coil coupling degree are improved, the charging efficiency is improved, meanwhile, the whole charging mechanism is arranged in the middle shaft and the middle shaft communicating pipe, and the charging efficiency is improved. And the extension circuit is sealed by glue, so that comprehensive protection of the charging mechanism is realized.

The invention discloses an electronic device, a filtering module and a method for reducing common mode noise, wherein the filtering module comprises a circuit board, a connector, a filtering ring and a plurality of coils, the connector and the filtering ring are both arranged on the circuit board; and the plurality of coils are wound on the filtering ring and electrically connected with the connector.

The invention discloses an electromechanical redundancy electronic speed regulator, and the speed regulator is composed of an actuator (1), a sensor and a control unit, wherein the actuator (1) comprises a driving shaft (11), a front end cover (14), a rear end cover (112), a sleeve (17) and an electromagnetic driving assembly arranged in the sleeve (17). An elastic clamping ring accessory (13) isarranged at the top end of the driving shaft (11). The electromagnetic driving assembly is composed of a coil winding (19), an armature (110), a wiring terminal (111), a coil winding outgoing line (13), a rolling bearing (15), a limiting spring seat (16) and a spring (18). According to the electromechanical redundant electronic speed regulator, the actuator (1) can directly exchange with a mechanical speed regulator conveniently and quickly, also can carry out the composite control on devices together with the mechanical speed regulator. Moreover, the size is small, and the regulation precision is high.

An axial multi-magnetic-pole permanent magnet rotor brushless motor is characterized in that magnetic shoes (9) arranged in sequence are fixed on the arc surface of a rotor (3). The magnetic pole of each magnetic shoe is a radial magnetic pole, the polarities of adjacent magnetic shoes are different, c stator iron cores (1) are uniformly distributed around the rotor (3), and each stator iron core(1) is composed of b pole shoe iron cores (10). Electromagnetic coils (2) with opposite winding directions are wound between two adjacent pole shoe iron cores on each stator iron core (1). The two ends of the main shaft (4) are supported by a first shell end cover (7) and a second shell end cover (8) and can rotate. The number of magnetic poles is increased in the axial direction of the rotor, anda plurality of permanent magnet poles in the axial direction of the rotor (3) do work at the same time. The winding space of the stator iron core (1) is increased, the magnetic density of the pole shoe iron core (10) is enhanced, and the energy-saving effect is more obvious. Current changes direction through the controller according to Hall detection signals, brushless operation is achieved, thestructure is simple, the size is small, and the weight is light.

The invention relates to the technical field of audio transformers, and discloses an audio transformer which comprises a U-shaped plate, wherein sliding grooves are formed in the left side and the right side of the interior of the U-shaped plate, limiting strips which are evenly distributed are slidably connected to the inner sides of the two sliding grooves, iron cores which are evenly distributed are arranged on the inner side of the U-shaped plate, the two ends of the iron core are fixedly connected with the limiting strips, and a copper wire is connected to the iron core in a wound mode. According to the invention, a primary coil is divided into a plurality of sections of average structures, secondary coils composed of copper wires, iron cores and limiting strips are divided into a plurality of groups and embedded into the primary coil, and the high-frequency surface transmission capability is improved through a high-frequency skin effect of an electronic circuit, that is, the higher the frequency is, the more concentrated the current is on the surface , so that the coupling capability of an output coil is improved, a multi-group parallel connection mode is adopted after output, the number of turns of windings at the input end of the transformer is increased, the inductance value of the input end is increased, and the low-frequency output extension range is improved.

The utility model relates to a motor and a stator coil assembly and a cooling fan thereof. The stator coil assembly is combined with a seat, and the seat is combined with a rotating component, thereby forming the motor. The motor structure further comprises the cooling fan. The stator coil assembly comprises a plurality of wiring layers, each wiring layer is provided with a wiring contour, the outer sides and the inner sides of the wiring contours are respectively provided with a positioning area and a wiring area, the wiring areas of the wiring layers respectively form a coil, and the positioning areas of the wiring layers respectively form at least one conduction part for electrical conduction with the coils of different wiring layers. Therefore, no space needs to be reserved between two adjacent coils of the stator coil assembly to accommodate the conduction parts, and the number of winding turns or wire diameter of the coils can be increased.

The structure comprises stator, rotor and winding on the stator. Several laminated plates are piled to form the stator. The rotatable rotor is inserted into the stator. The structure of the stator comprises outer stator and inner stator. A combination hole in quadrilateral section shape is formed on central part of the outer stator. The inner stator can be inserted into the combination hole in the outer stator, and the rotor can be inserted into an insertion hole in central part of the inner stator. There is gap between the outer stator and the inner stator made from T-shaped steel in order to enwind the said winding. The said structure of stator makes winding be enwound evenly and makes enwound quantity be increased so as to obtain effect of raising electrical efficiency.

The invention provides a stator structure and a brake. The stator structure comprises a stator iron core, wherein the stator iron core comprises an outer split body and an inner split body, the outersplit body is of a ring-shaped structure; the inner split body is arranged in the outer split body in a penetrating mode; the inner split body comprises a base, a column body and side wings, and the base and the side wings are separately positioned at the two ends of the column body; in the radial direction of the column body, the dimension of the base and the dimensions of the side wings are greater than the dimension of the column body; an area among the base, the column body, the side wings and the outer split body defines an accommodating cavity for arranging a coil; and the base and the side wings are separately used for limiting the two ends of the coil. With the adoption of the technical scheme, the stator iron core is set to be a split structure, the coil can be directly wound on the column body of the inner split body, and the inner split body is assembled into the outer split body after the coil is wound, so that the original framework can be cancelled; and moreover, the baseand the side wings separately limit the two ends of the coil, and winding of the coil is relatively compact, so that winding turn number can be increased within a limited space, and a slot full rateis increased.