108 results about "Slot insulation" patented technology

The invention relates to the technical field of motor manufacturing equipment. The invention discloses a slot insulation paper cutting device which comprises a base, a slot insulation paper laser cutting module, a smoke purifier, a paper feeding and pushing module and a tension paper feeding module are integrated on the base, the slot insulation paper laser cutting module is arranged on the downstream of the tension paper feeding module, and the smoke purifier is arranged above the slot insulation paper laser cutting module; the tension paper feeding module is used for providing stable conveying of slot insulation paper; the groove insulation paper laser cutting module is used for carrying out laser cutting and printing processing on groove insulation paper; the paper feeding and pushing module is used for pushing the groove insulation paper from the tension paper feeding module to the groove insulation paper laser cutting module; the smoke purifier is used for collecting smoke generated in the cutting process. The method has the beneficial effects that 1, high-precision laser cutting and dynamic compensation are achieved, specifically, a special laser cutting module for slot insulation paper is adopted, the cutting focal length of a laser head is adjusted through a hand-cranking wheel, a cutting path is preset according to the slot type unfolding shape of the skewed slot stator, the cutting path is dynamically adjusted, the technology that cutting printing is not cut through is supported, the burr problem of cutting of a traditional cutter is avoided, and the production efficiency is improved; in combination with the tension control of a servo motor paper feeding servo motor and a tension paper feeding module, the cutting precision is ensured to be + / -0.05 mm; 2, an environment-friendly smoke purification system is adopted, a smoke purifier is integrated at the top of equipment, harmful smoke generated in the laser cutting process is collected in real time, the workshop environment is improved, and the environment-friendly requirement is met;

The invention provides equipment for processing slot insulation paper for a skewed slot stator. The equipment comprises a base; a slot insulation paper laser cutting module, a stator loading and unloading module, a slot insulation paper forming module, a smoke purifier, a paper feeding and pushing module and a tension paper feeding module are integrated on the base, the slot insulation paper laser cutting module is arranged at the downstream of the tension paper feeding module, and the smoke purifier is arranged above the slot insulation paper laser cutting module; the slot insulation paper forming module is arranged on the downstream of the slot insulation paper laser cutting module, and the stator feeding and discharging module is arranged on one side of the slot insulation paper forming module; the paper feeding and pushing module is arranged between the tension paper feeding module and the slot insulation paper forming module, and the stator loading and unloading module is matched with the slot insulation paper forming module to work; compared with the prior art, through integrated, high-precision and intelligent design, the problems that traditional skewed slot stator slot insulation paper processing and assembling are low in efficiency and low in precision are solved, and a set of efficient, reliable and environment-friendly integrated equipment is provided for motor manufacturing (especially skewed slot motor stator slot insulation paper installation); in addition, all the modules work cooperatively with a control system through mechanical transmission, and the full-automatic process of groove insulation paper from feeding, cutting and forming to insertion in a stator groove is achieved.

The invention discloses a bus duct structure and an assembly method thereof, and the bus duct structure comprises a housing which is provided with at least one installation groove. The insulating layer is attached to and covers the inner surface of the mounting groove; the insulating layer is arranged in the mounting groove, the groove opening of the mounting groove can allow the connecting row to enter or exit from the mounting groove along the depth direction of the mounting groove, the connecting row is embedded in the mounting groove through the groove opening of the mounting groove, and the connecting row is in contact with the insulating layer in an attached manner. According to the bus duct structure and the assembly method thereof provided by the invention, the assembly steps can be effectively simplified, and the temperature rise can be reduced.

The invention provides a framework splicing block, a motor framework, an iron core and a motor, relates to the technical field of motors, and solves the technical problems that a traditional splicing block motor is complex in assembly process, difficult in slot insulation installation and lack of an excitation adjusting function. The framework splicing block comprises a splicing block body, a buckling point structure is arranged at one end of the splicing block body, a buckling hole structure is arranged at the other end of the splicing block body, and the splicing block bodies are connected through cooperation. The splicing block body is further provided with an auxiliary winding receding groove and a silicon steel block groove, and the pointing angle of the silicon steel block groove is set according to needs so as to optimize the magnetic field layout. The groove insulation and the frameworks are integrally formed, and axial deviation is prevented through a concave-convex meshing structure of the upper framework and the lower framework. The device has the advantages of being simple in structure, convenient to assemble, high in efficiency and high in applicability.

The application belongs to the field of electrical insulating materials, and discloses a slot insulating material for a low-altitude aircraft motor and a preparation method thereof. The slot insulating material for the low-altitude aircraft motor comprises, from top to bottom, a first insulating paper layer, a film layer and a second insulating paper layer; the first insulating paper layer and the second insulating paper layer are each independently selected from aramid fiber paper or polyaryl sulfone fiber paper; the film layer is selected from one of polyphenylene sulfide film, polyester film, polynaphthalene ester film, polyether ether ketone film or polyetherimide film; wherein, there is no independent adhesive layer between the first insulating paper layer, the film layer and the second insulating paper layer, the first insulating paper layer and the second insulating paper layer are directly combined on the upper and lower surfaces of the film layer through hot pressing, forming a three-layer glue-free composite structure of insulating paper-insulating film-insulating paper, and fundamentally solving the engineering problem that the glue-free composite slot insulating material is prone to paper breakage.

The utility model relates to the technical field of insulation and isolation, in particular to an insulation and isolation structure for a cabinet large-current output copper bar, which comprises a main board, an output copper bar is arranged on the surface of the main board, and a through hole and a clamping groove are formed in the surface of the main board; a first buckle and a second buckle are arranged on the surface of the insulating plate, and an inserting rod and a notch are arranged on the surface of the insulating plate; the beneficial effects are that a pulling ball is pulled, so that a spring is stretched, an inserting rod enters an insulating plate, the insulating plate is inserted between two groups of output copper bars, the insulating plate abuts against the surface of a main board, and a telescopic rod moves downwards after being extruded by the side surface of the insulating plate, so that a first buckle enters a through hole, and a second buckle moves to the bottom of a clamping groove; the telescopic rod stretches out under pushing of the end spring, the telescopic rod pushes the insulating plate, so that the insulating plate moves upwards, the first buckle moves upwards in the through hole, the second buckle moves upwards in the clamping groove, and the insulating plate is clamped to the surface of the main plate through the first buckle and the second buckle.

The invention provides a rotor of a permanent magnet motor, a manufacturing method of the rotor, the permanent magnet motor and a wind generating set. The rotor includes: a rotating shaft; the iron core is assembled on the rotating shaft, and an iron core groove penetrating through the iron core in the axial direction of the rotor is formed in the iron core; the slot insulating part is provided with a hollow structure, at least one of the two axial ends of the slot insulating part is open, and the slot insulating part is inserted into the iron core slot; a seal disposed at the at least one of the two axial ends of the slot insulator; and the magnetic pole module is fixed in the groove insulating part through insulating impregnating adhesive. According to the rotor of the permanent magnet motor, the magnetic pole module can be effectively fixed, and meanwhile, the magnetic pole module is prevented from generating a thermal demagnetization phenomenon.

The invention belongs to the field of flat wire motors, and relates to a flat wire motor with multiple parallel branches and a winding connection method thereof. Comprising a stator core, slot insulation and a flat wire winding, the flat wire winding is a fractional slot concentrated winding with the span being 1, the flat wire winding adopts a rectangular wire, the wide edge of the rectangular wire is parallel to teeth, and the narrow edge of the rectangular wire is bent; a wire is wound into two layers along the groove height direction to form a winding element, and each tooth comprises two winding elements; the stator iron core and the flat wire winding are insulated through slot insulation; the even number of teeth of the same pole phase group are divided into two groups, and the upper-layer winding elements belonging to the same group of teeth are sequentially connected end to end to form an upper-layer coil group; the lower-layer winding elements are sequentially connected end to end to form a lower-layer coil group; the upper-layer coil assembly on the first group of teeth and the lower-layer coil assembly on the second group of teeth are connected end to end to form a first branch; the lower-layer coil assembly on the first group of teeth and the upper-layer coil assembly on the second group of teeth are connected end to end to form a second branch; the two branches are connected in parallel.

The invention discloses a medium-voltage transistor with a fin-shaped structure and a manufacturing method thereof, and the medium-voltage transistor with the fin-shaped structure comprises a substrate, a fin-shaped structure which protrudes out of one surface of the substrate, a gate structure which stretches across the fin-shaped structure, a source electrode which is arranged at one side of the gate structure and is embedded in the fin-shaped structure, a drain electrode is disposed on the other side of the gate structure and embedded in the fin-shaped structure. A second deep trench insulator is embedded in the substrate and adjacent to the source electrode and the drain electrode. An insulating structure is embedded in the fin-shaped structure below the gate structure. Wherein the insulating structure comprises a first deep trench insulator and a first shallow trench insulator enlarged from the side wall of the first deep trench insulator to the source electrode.

The utility model discloses an insulation paper flanging device of a stator slot insulation machine, and relates to the technical field of flanging devices. The first rotating shaft and the second rotating shaft are rotationally arranged on the support assembly; the two ends of the first rotating shaft are fixedly connected with the limiting rings; the two ends of the second rotating shaft are fixedly connected with the guide rings, groove insulation paper is arranged between the first rotating shaft and the second rotating shaft in a penetrating mode, and the guide rings are used for driving the two sides of the groove insulation paper to be folded and flanged; and the plurality of round rods are located on one side of the second rotating shaft, and the plurality of round rods are used for extruding the groove insulation paper. According to the flanging device, the first rotating shaft and the limiting ring are used for guiding, then the second rotating shaft and the guide ring are used for conveniently folding, finally the round bar is used for extruding and clinging, the whole structure is simple, the cost is low, meanwhile, abrasion to groove insulation paper can be reduced, and the machining condition can be conveniently observed.

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

A combined connector comprises an insulating shell, a first electric conductor is arranged in the insulating shell, two first conductive plates and two second conductive plates are arranged on the first electric conductor at intervals in the length direction of the first electric conductor, and the first conductive plates and the second conductive plates are both vertically connected to the first electric conductor. Two first conductive connection chambers are adjacently arranged on one side in the insulating shell, and two second conductive connection chambers are adjacently arranged on the other side in the insulating shell; a plug is inserted into each second conductive connection chamber, an anti-tripping buckle is arranged on the side face of each plug and below the corresponding guide column, and an anti-tripping hook matched with the anti-tripping buckle is arranged in the side wall of each second conductive connection chamber; the first conductor is provided with a connector socket, and the insulator is provided with a connector slot above the connector socket. The anti-drop hook on the insulating part and the anti-drop buckle on the plug can form effective locking, so that the plug is not easy to slide out accidentally after being inserted into the insulating part, and the electrical performance of a product and the use safety of a user can be effectively improved. According to the utility model, the plug-in type electrical connector can be adopted to realize the transverse connection among the multi-position connectors.

The utility model relates to the technical field of automobile parts, in particular to an automobile wiring terminal stable in connection, which comprises an insulation fixing plate, an upper insulation fixing frame and a lower insulation fixing frame. An insulating fixing frame is fixedly installed at the upper end of the insulating connecting frame, limiting plates are symmetrically installed on the two sides of the insulating fixing frame, limiting pull rods are fixedly installed at the upper ends of the limiting plates, limiting grooves are formed in the upper ends of the limiting pull rods, and an upper insulating fixing frame is installed in the insulating fixing frame. According to the wiring terminal, the limiting pull rod is fixedly connected with the external wiring harness joint through the limiting groove, so that the positioning accuracy of the wiring harness joint is ensured, the close fit between the wiring harness and the wiring terminal is enhanced, and the wiring harness is effectively prevented from loosening or falling off due to vibration or external force; therefore, the reliability and the safety of the automobile electrical system are improved.

The utility model belongs to the technical field of aviation motor design, and relates to a permanent magnet brush direct current tachogenerator armature assembly in-groove structure, which comprises a binding wire (1), a groove insulator (2) and a coil (3). According to the utility model, on the basis of the existing armature assembly, the structure in the groove of the armature assembly is optimized in combination with product technical requirements and use environment requirements. The permanent magnet brush direct current tachogenerator is high in slot fullness rate, and in order to solve the problem that the slot fullness rate of the product is high, the high slot fullness rate of the motor enables the heat dissipation performance of the motor to become poor, the temperature rise of a coil becomes high, the aging of materials is accelerated, the coil is easy to damage after a slot wedge is extruded in a coil inserting process, and the damage is possibly aggravated by vibration and impact environments in a use process. And the motor is easy to break. After the structure in the groove is improved, extrusion in the groove is reduced, and the situation of wire breakage is avoided.

The application relates to an oscillation hot-pressing integrated forming process for L-shaped slot insulation of a generator rotor, and specifically comprises the following steps: S1, mold preparation and base layer laying, S2, primary oscillation hot-pressing forming, S3, thickening layer laying and secondary oscillation solidification, wherein when the oscillation hot-pressing head performs pressing, the working surface of the oscillation hot-pressing head applies dynamic pressure to the material in a combined mode of rolling rolling and wave scanning, and S4, post-processing, the application has the following advantages: through the introduction of a dynamic oscillation pressure field, the interlayer fusion and internal stress problems in the twice hot-pressing process of different materials are effectively solved.

The invention relates to a stator (1) for an electric machine (2), comprising a plurality of circumferentially distributed stator slots (3), which extend axially through the stator (1) and in each of which a plurality of electrical conductors (4) of a stator winding (5) are arranged, which electrical conductors exit the stator slots (3) axially on both sides, thereby forming a winding head (26a, 26b) in each case, wherein a slot insulation paper (6) is arranged in each case between a stator slot (3) and the conductors (4) accommodated therein, which slot insulation paper electrically insulates the stator slot (3) with respect to the conductors (4), and wherein the slot insulation papers (6) have a substantially U-shaped cross-sectional contour, having a base (7) which extends in the circumferential direction and from which a first free limb (8) and a second free limb (9) each extend away from the base (7) in the radial direction, and the slot insulation papers (6) protrude axially from the stator slots (3) with a protruding section (11) on at least one end face (10) of the stator, wherein the circumferential distance (12) between the first free limb (8) and the second free limb (9) increases in the protruding section (11) of the slot insulation papers (6) as the axial distance (13) increases when viewed from a stator slot (3).

The utility model discloses a combined self-temperature-limiting ribbon heater, which comprises two buses arranged in parallel, an insulating layer is coated outside a semiconductor heating core tape, a metal wire woven belt-shaped shielding layer is spirally wound outside the insulating layer, and an insulating outer sheath is coated outside the metal wire woven belt-shaped shielding layer; the top, the bottom and the two sides of the inner wall of the insulating layer are all provided with inner shearing grooves in the length direction, and the top, the bottom and the two sides of the inner wall of the insulating outer sheath are all provided with outer shearing grooves in the length direction. According to the utility model, the inner shearing groove and the outer shearing groove are arranged on the insulating layer and the insulating outer sheath, so that blades of scissors can be conveniently inserted, the metal wire woven belt-shaped shielding layer is reserved, the winding of the insulating adhesive tape is not limited by space, the operation is simpler, the winding, sealing and fixing are more facilitated, and the insulating layer and the insulating outer sheath are reserved; the insulating and wear-resisting effects are not influenced, and the use is safer.

The invention belongs to the technical field of motor manufacturing, and provides a blank cap type rotor lead assembly structure, which comprises a rotor, an insulating bush, an insulating lead screw, a connecting screw, a lead slot wedge, a choke plug and a lead, the choke plug is screwed in the choke plug mounting groove; the lead slot wedge comprises a plurality of slot wedge units; the rotor is internally provided with a lead mounting groove and a containing groove which are matched with the lead, the insulating bush is arranged in the containing groove, the choke plug abuts against the insulating bush, the side wall of the insulating bush is provided with an opening, the bottom end of the insulating bush is provided with a communication port, and the opening is communicated with the communication port; the connecting screw is arranged in the rotor, one end of the lead is connected to the connecting screw through the insulating lead screw, and the other end of the lead sequentially penetrates through the opening, the lead mounting groove and the slot wedge mounting groove and extends to the outer side of the rotor. According to the rotor lead assembly structure, the machining amount of the rotor is reduced, the rigidity of the rotor is enhanced, and due to the structural characteristics of the multi-section lead slot wedge, later unit maintenance and poor contact point inspection can be facilitated.

Semiconductor device with a first active component region (20) and with a second active component region (22), wherein the first active component region (20) and the second active component region (22) extend planarly along a first lateral direction (L1) and a second lateral direction (L2) differing from it; and with a trench insulation structure (10, 10') that electrically insulates the first active component region (20) from the second active component region (22) along the first lateral direction (L1) and has at least one electrically conductive side wall (14, 14', 14"); wherein the trench insulation structure (10, 10') comprises: - a continuously insulating trench insulation base wall (30); - several spaced-apart trench insulation sections (32a, 32b) with electrically conductive side wall sections (14a, 14b) located between them;- wherein the multiple trench insulation sections (32a, 32b) and the electrically conductive sidewall sections (14a, 14b) are spaced apart from the trench insulation base wall (30) (a, b).;

The invention relates to a bearing arrangement with integrated electrical insulation, in particular for an electric machine or motor, and to an associated production method. The bearing arrangement comprises a bearing (10) provided with a first ring (12) and a second ring (14). The device comprises at least one insulating sleeve (26) mounted on the second ring and provided with a bushing (28) and an insulating insert (30) made of an electrically insulating material. An insulative insert is overmolded on the second ring and overmolded at least on one of the outer and inner surfaces of the liner. The surface of the bushing is provided with at least one first slot (36) inside which a first attachment rib (40) of the insulating insert having a complementary shape extends, the first slot extending circumferentially about a first axis, the first axis being radially offset with respect to an axis (29) of the surface of the bushing.

The invention discloses a one-branch odd-layer stator of a flat wire motor and a stator winding manufacturing method.The one-branch odd-layer stator of the flat wire motor comprises a stator iron core and a stator winding, the stator iron core comprises a stator inner circle and a stator outer circle, Q axially-through stator grooves are evenly formed in the inner circumference of the stator iron core in the circumferential direction, the stator slots are internally provided with slot insulation paper and flat wire windings, each stator slot is internally provided with an odd number of flat wire layers with the layer number of 2n-1, n is an integer greater than or equal to 1, the slot number of each pole and each phase of the stator is q = Q / (2p * m) = 2, Q is the slot number of the stator, p is the pole pair number of the motor, and m is the phase number of the motor; compared with the prior art, through the integral slots with the slot number q of each pole and each phase being 2 and the flat wire layer number 2n-1 being odd layers (n is an integer greater than or equal to 1), the limitation of even layers is broken, the number of turns of the winding is continuously adjustable, and the electromagnetic design freedom degree and the whole machine performance consistency are remarkably improved.

The utility model discloses a tool for cutting insulation paper of a stator slot of a wind driven generator. The tool comprises a tool rest, a blade and a handle, the handle is connected with the knife rest; the knife rest comprises a top frame, a middle frame and a bottom frame; the top frame comprises two strip-shaped top plates arranged at intervals, and the two sides of the top of the middle frame are fixedly connected with the two strip-shaped top plates correspondingly. The bottom side face of the middle frame is fixedly connected with a bottom frame, a gap used for installing a blade is formed between the bottom frame and the middle frame, and a first paper feeding gap and a second paper feeding gap used for embedding stator slot insulation paper are formed in the bottom frame in the length direction of the bottom frame; a mounting hole for mounting a blade is formed in the middle frame; the blade is arranged in a gap between the bottom frame and the middle frame, and the blade is connected with a mounting hole in the middle frame through a fastener; the tool can meet the requirement that the cut slot paper is lower than the outer surface of an iron core, the cutting size can be fixed, two pieces of slot paper on the two sides of a single slot can be cut at the same time, the production efficiency is improved, the cutting size is controlled, and the safety problem caused by directly using an art knife for cutting is avoided.

The invention relates to a stator (1) for an electric machine (2) comprising a plurality of circumferentially distributed stator slots (3) extending axially through the stator (1), in each of which a plurality of electrical conductors (4) of a stator winding (5) are arranged, which emerge axially from the stator slots (3) on both sides, forming a winding head (26a, 26b), wherein a slot insulating paper (6) is arranged between each stator slot (3) and the conductors (4) received therein, which electrically insulates the stator slot (3) from the conductors (4), and wherein the slot insulating papers (6) have a substantially U-shaped cross-sectional contour, with a circumferentially extending base (7) from which a first free leg (8) and a second free leg (9) extend radially away from the base (7).and the slot insulation papers (6) protrude axially from the stator slots (3) at at least one end face (10) of the stator (1) with a projection section (11), wherein in the projection section (11) of the slot insulation papers (6) the circumferential distance (12) between the first free leg (8) and the second free leg (9) increases with an axial distance (13) as viewed from a stator slot (3).

The utility model belongs to electrical equipment technical field discloses a kind of switch devices, including gas tank and the static contact and moving contact assembly being located in gas tank, moving contact assembly includes first insulating seat, insulating sliding sleeve and moving contact, the first end of first insulating seat towards static contact is equipped with the sliding slot of the first end sliding plug-in of insulating sliding sleeve, and the outer periphery between insulating sliding sleeve and the groove wall of sliding slot forms seal;Insulating sliding sleeve is equipped with first gas guide channel and mounting hole, and the first end of first gas guide channel is communicated with sliding slot, and the second end of first gas guide channel is towards static contact;The first end of moving contact is plugged into mounting hole, and the second end of moving contact is set towards static contact;Static contact is equipped with second gas guide channel, and the first end of second gas guide channel is set towards moving contact and penetrates the first end of static contact, and the second end of second gas guide channel penetrates the second end or outer periphery of static contact.The switch device provided by the utility model is favorable to improve the arc extinguishing performance when switch device closes.

The invention discloses a one-branch even-layer flat wire motor stator and a stator winding manufacturing method.The one-branch even-layer flat wire motor stator comprises a stator iron core and a stator winding, the stator iron core comprises a stator inner circle and a stator outer circle, Q axially-through stator grooves are evenly formed in the inner circumference of the stator iron core in the circumferential direction, slot insulation paper and a flat wire winding are arranged in each stator slot, the number of flat wire layers is an even number of 2n, n is an integer larger than or equal to 1, in the flat wire winding, the n layers close to the inner circle of the stator and the n layers close to the outer circle of the stator are staggered by one stator slot anticlockwise, and flat wire hairpins of the (n + 1) th layer and the nth layer adopt short-distance hairpins with the span being y1; through the arrangement that the n layers, close to the inner circle of the stator, of the flat wire winding and the n layers, close to the outer circle of the stator, of the flat wire winding are staggered by one groove anticlockwise, the number of the hairpins is n, the hairpins are consistent in direction, the number of special dies can be effectively reduced, and manufacturing cost is reduced.

The utility model belongs to the technical field of power distribution cabinet application, and particularly discloses a high-safety power distribution cabinet with a convenient-to-disassemble structure. Comprising a power distribution cabinet, a square mounting seat, an outer countersunk head screw hole, a plurality of inner countersunk head screw holes, a square mounting seat through hole, a circular insulation transition seat, a circular insulation transition seat screw groove, an insulation bolt, a guide through hole, a conductive plate, a plurality of grounding piles, a grounding lead and the like. The beneficial effects of the utility model lie in that 1, the power distribution cabinet is suitable for outdoor installation and use, solves the outdoor safety problem, and can be combined with a lightning rod for use to guide lightning stroke current into a soil layer in time to protect the safety of the power distribution cabinet; and 2, the prefabricated concrete seat, the two groups of internal thread bushings, the limiting groove and the grounding pile insulation guide sleeve structure can be prefabricated and processed, and can be transported to an acting surface for hoisting construction during use, so that the square mounting seat, the circular insulation transition seat, the insulation bolt, the conductive plate, the plurality of grounding piles, the grounding lead and the like are matched for use, and the construction period is effectively shortened.

The utility model provides a male joint double-wire clamp, which comprises a male joint body, the male joint body comprises a terminal formed by rubber coating, an insulating plastic block, a conductor elastic sheet, a positive wire clamp and a negative wire clamp, the positive wire clamp and the negative wire clamp are oppositely arranged on the insulating plastic block, the terminal is arranged at the bottom of the insulating plastic block and is integrally formed with the positive wire clamp, and the conductor elastic sheet is arranged on the conductor elastic sheet. The conductor elastic piece and the negative wire clamp are integrally formed, the conductor elastic piece extends to the outside of the insulating plastic block, the positive wire clamp and the negative wire clamp are each provided with a clamping groove for clamping a wire, the insulating plastic pipe body is arranged on the outer wall of the male head body in a sleeving and clamping mode, and a through hole for installing the male head body is formed in the insulating plastic pipe body in a penetrating mode. The insulating plastic tube body is sleeved with a copper tube, and a communication notch which allows the conductor elastic sheet to penetrate through and abuts against the copper tube is formed in the insulating plastic tube body in a penetrating mode. According to the male head double-wire clamp, rapid disassembly and assembly of wires can be realized, manpower is saved, and the overall installation efficiency is improved.

An embodiment of the present invention provides a stator of an electric motor, the stator comprising: a stator core having a plurality of teeth around which a coil is wound; an insulation assembly formed at one end part of the stator core and including a guide part, the outer surface of which the coil drawn out to the one end part of the stator core is disposed on; and an insulation cover part for covering the insulation assembly, wherein a plurality of slots spaced apart along the circumferential direction is provided at the guide part, and a plurality of insulating protrusions protruding radially inward to correspond to at least some of the plurality of slots is provided at the inner surface of the insulation cover part.

The motor assembly comprises a shell, a stator assembly and a rotor, the rotor is sleeved with the stator assembly, the shell is arranged on the periphery of the stator assembly, and a cooling cavity is formed between the shell and the stator assembly; the stator assembly comprises a stator, windings and an insulation structure, the stator is provided with a plurality of first mounting grooves distributed in the circumferential direction, the insulation structure is provided with a plurality of insulation plates distributed at intervals in the circumferential direction, the insulation plates are connected into the first mounting grooves in a one-to-one correspondence mode, each insulation plate is provided with a second mounting groove, and the windings comprise multiple layers. The multiple layers of windings are distributed in each second installation groove in the radial direction, a first cooling flow channel is formed between every two adjacent windings in the radial direction, cooling liquid enters the cooling cavity from one end of the shell and flows to the other end of the stator assembly in the axial direction from one end of the stator assembly in the axial direction through each first cooling flow channel, and uniform cooling of the multiple layers of windings is achieved. The problem that windings of different levels are heated unevenly is solved.

Even when assembling multiple sheet coils and multiple insulating plates, the design enables quick and easy assembly, while avoiding the generation of unnecessary defects and improving productivity. In addition, it suppresses variations in characteristics, contributing to improved quality and overall miniaturization. [Solution] A fitting groove 4 is provided on at least one opposing surface 3as of insulating plates 3x, 3a, 3y facing the coil surface of the sheet coil 2a..., and an inclined surface 5 is formed on the insulating plate 3... continuous with this fitting groove 4..., which is displaced by the vector Fsp caused by pressing in the direction Fs perpendicular to the surface of the sheet coil 2a..., thereby fitting the sheet coil 2a... into the fitting groove 4....