46results about How to "Guaranteed creepage distance" patented technology

The invention provides a conduction type charging connector for an electric vehicle. The connector comprises a vehicle end connecting part and a charger end connecting part, wherein the vehicle end connecting part comprises an insulating socket structure, the charger end connecting part comprises an insulating plug structure, the plug structure and the socket structure are matched with each other; the plug comprises an earth electrode and a power supply electrode, a charge controlling electrode is also arranged in the plug; a jack which is formed in the socket is matched with the plug electrodes, the heights of the earth electrode, the power supply electrode and the charge controlling electrode decrease in turn. In the invention, an inserting mode is adopted between the vehicle end connecting part and the charger end connecting part, two conductors which are matched with each other and correspond in positions are respectively arranged on the vehicle end connecting part and the chargerend connecting part; by adopting the structure, the charging connector can be directly inserted without an intermediate transition structure, thus the charging connector is convenient to use; each electrode adopts the structure with a certain height difference, thus the connector can be avoided plugging an electric arc during the connecting and separating process, the safety of the operators and vehicles can be ensured and the service life of the connector can be prolonged.

The invention provides a capacitance compensation switch. A silicon controlled module is installed on a heat dissipation base and is arranged in a casing; the control circuit on a control circuit board is provided with a signal input end and a signal output end; the signal input end of the silicon controlled module is electrically connected with the signal output end of the control circuit; the heat dissipation base is provided with a heat dissipation base plate and two side plates and heat dissipation fins; the heat dissipation fins and the two side plates are arranged in parallel; the two ends of the heat dissipation base plate is provided with a protrusion part which is provided with an installation through hole; the side plate of the heat dissipation base plate is provided with an installation groove which is provided with installation screw holes; the lower part of the side plate of the casing is inserted into the installation groove and is fixedly connected onto the side plate through screws and installation screw holes; two connecting terminal rows are installed on the heat dissipation base plates; the silicon controlled module is arranged between the two connecting terminal rows; the controlled silicon module and the connecting terminal rows are electrically connected through an electric conductor; and the control circuit board is installed on the inner wall of the top plate of the casing. The invention has simple and stable structure, convenient installation, easy maintenance, little electromagnetic interference and high reliability.

Provided are a stator capable of ensuring the creepage distance and being applicable to a compact motor, and a permanent magnet rotating electric machine. A motor stator (1) is provided with a yoke core (11) and a plurality of tooth cores (12) extending in the radial direction of the core (11). In the motor stator (1), a plurality of bobbins (13) attached to the tooth cores (12) and produced from an insulating material are provided, the bobbin (13) is configured from a body part (131) around which the exciting winding of the stator (1) is wound, and flange parts (132, 133) formed at both ends of the body part (131), and at an end surface in the circumferential direction of the inner diameter-side flange part (132, 133) of the flange parts (132, 133), a fitting section for fitting projecting and recessed sections of the flange parts (132, 133) of adjacent bobbins (13); to each other to thereby connect the plurality of bobbins (13) in the circumferential direction is provided.

The invention discloses an environment-friendly gas insulated switchgear. The top of an inflation chamber (7) is connected with a wire outlet sleeve (6) in a penetrating manner. The bottom of the inflation chamber (7) is connected in a penetrating manner with a wire inlet sleeve (10) communicated to a cable chamber (5). A three-position switch device (8) and a vacuum circuit breaker device (9) arearranged in the inflation chamber (7). A circuit breaker shaft (15) and an isolation grounding shaft (21) are both inserted into the inflation chamber (7), and the circuit breaker shaft (15) and theisolation grounding shaft (21) drive the vacuum circuit breaker device (9) and the three-position switch device (8) respectively. The environment-friendly gas insulated switchgear has a compact overall structure and reliable performance, and has a maintenance-free function. The problem that harmful insulating gas leaks to damage the environment and the problem that epoxy resin and other solid insulation bring a large amount of solid waste are solved fundamentally.

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctor is provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The invention provides a high-power high-voltage high-frequency transformer. The transformer comprises an insulating partition plate; a primary winding and a secondary winding which are respectively arranged on two sides of the insulating partition plate, wherein the primary winding and the secondary winding are spirally coiled according to a plane to form a wire cake, and an inner hole is formedin the center of the wire cake; and primary and secondary side magnetic cores which are arranged in inner holes of the primary and secondary side windings; the primary side magnetic core is fixed in the primary side shielding case, the secondary side magnetic core is fixed in the secondary side shielding case, and the primary side shielding case and the secondary side shielding case enable the whole high-power high-voltage high-frequency transformer to be flat. Therefore, the transformer is in an ultra-thin flat shape, thermal resistance can be reduced, voltage resistance and creepage distanceare guaranteed, insulating materials are saved, due to the flat shape, the distance between the shielding covers on the two sides is small, the plane is large, the uniformity of an internal electricfield is good, no partial discharge can be achieved, and the insulating plate is arranged between the primary winding and the secondary winding. The primary side and the secondary side of the transformer can be completely isolated, and high-voltage isolation is achieved.

The invention discloses a self-locking type power cable plugging connector. The self-locking type power cable plugging connector comprises an inserting piece base and a fixed sealing cover; a positioning groove is formed in a cavity in one end of the inserting piece base; a fixed sealing cover clamping groove is formed in the fixed sealing cover; a power cable conductor is sleeved with a power cable semi-conductive layer; the bottom of the power cable conductor is sleeved with a power cable insulating layer; the bottom of a power cable outer sheath layer is sleeved with a cable auxiliary semi-conductive layer and a cable auxiliary insulating layer from inside to outside in sequence; a spring contact finger mounting groove is formed in the upper end surface of a concave type metal socket; a conductive buffer groove and a self-locking limiting groove are formed in a convex type inserting piece from the top to bottom in sequence; and the spring contact finger mounting groove and the metal spring contact finger are in interference fit. The self-locking type power cable plugging connector has a small size, self-locking function plugging connection characteristic and high voltage resistance, and the main body, without using other parts and medium, can pass an alternating current voltage withstand test to be suitable for an underground type transformer, a fully-sealed oil switch and SF<6> electrical equipment.

The invention relates to an LED lamp having a converter and an arrangement, connected to the converter, of light-emitting diodes arranged on at least one printed circuit board. The converter is arranged in a multi-part, latchable housing which completely surrounds the converter and is made of electrically non-conductive material.

An outdoor 2 multiply 27.5 kV solid-sealing vacuum modular device of electrified railway includes brackets, two connection branches mounted on the brackets that are parallel and independent to each other and an integrated automation control box, a bipolar solid-sealing disjunctor is mounted onto middle part of the brackets, an outgoing line connection terminal is located on a first solid-sealing strut type transformer, moving contact of a first bipolar disconnector is located on bracket of the first solid-sealing strut type transformer, between the first bipolar disconnector and the disjunctoris provided with current transformer, stationary contact of the first bipolar disconnector is located on the current transformer which is connected with a single polar solid-sealing disjunctor; an incoming line connection terminal is located on a second solid-sealing strut type transformer, moving contact of a second bipolar disconnector is located on the second solid-sealing strut type transformer, stationary contact of the second bipolar disconnector is located on a solie-sealing polar of the disjunctor. The invention can reduce floor space efficiently and capitalized cost, and has good reliability and good prosucts reliability, which is convenient to maintain.

The invention relates to the technical field of composite insulators, in particular to a novel composite insulator and a production process thereof. The novel composite insulator includes a mandrel, asilicone rubber sheath and an umbrella skirt. The silicone rubber sheath fixedly sleeves the outer surface of the mandrel by extrusion. The silicone rubber sheath includes a sheath body, and four raised strips extend from the outer surface of the sheath body in the form of a cross. The umbrella skirt is formed on the outer surface of the silicone rubber sheath by injection. Compared with the prior art, the silicone rubber sheath is fixed on the outer surface of the mandrel by extrusion, and the umbrella skirt is fixed on the outer surface of the silicone rubber sheath by injection, so that the bonding between the silicone rubber sheath and the mandrel is firmer and more aging-resistant; and multiple interface generation points are reduced, so that moisture, acid and alkali are prevented from infiltrating into the mandrel, and the use and operation risk of the product is greatly reduced. The application also provides a production process of the composite insulator.

The invention discloses a novel butt joint structure of a conductive slide ring, and belongs to the technical field of electromechanical devices. The novel butt joint structure solves the problems ofburning out of a pin fixing base, inaccurate positioning of a rotating butt joint part and mis-inserting of male and female pins during the field use of the sliding ring in high temperature environment. The novel butt joint structure includes a female pin socket assembly and a male pin plug assembly connected to the female pin socket assembly. The female pin socket assembly includes a female pin bearing mounting seat, a female pin mounting seat assembly, female pin sleeves, shoulder screws and female pin assemblies. The male pin plug assembly includes a male pin fixing seat, a male pin mounting seat assembly, male pin sleeves and male pin assemblies. Positioning columns for positioning with the male pin assemblies are arranged on the female pin bearing mounting seat. Positioning grooves for matching the positioning columns are arranged in the male pin fixing seat. The female bearing mounting seat is connected to the male pin fixing seat through the cooperation of the positioning columns and the positioning grooves. The male pin assemblies are inserted into the female pin assemblies through the cooperation of the positioning columns and the positioning grooves.

The invention discloses a wiring device of a mining explosion-proof permanent magnet synchronous variable-frequency traction motor. The wiring device comprises a base, a stator winding, a wiring boltand an insulating sleeve, wherein the stator winding is installed in the cylinder wall of the base in a winding manner, and a preset distance is formed between the stator and one opening of the base;a first through hole penetrating through the cylinder wall is formed in the preset distance, the insulating sleeve is fixed outside the cylinder wall of the base through the first through hole, and the bottom end of the insulating sleeve extends into the cylinder wall; and a wiring bolt penetrates into and is fixed in the insulating sleeve, and the upper end and the lower end of the wiring bolt are respectively exposed out of the top end and the bottom end of the insulating sleeve. According to the invention, the problem that the space of a motor junction box is compressed is solved; the mining explosion-proof permanent-magnet synchronous variable-frequency traction motor solves the problem that a mining explosion-proof permanent-magnet synchronous variable-frequency traction motor in an improved transport locomotive head for a coal mine cannot be designed due to the fact that a terminal sleeve cannot be arranged, a special stop gasket, a terminal electrical gap and a creepage distancecannot meet standard requirements, simplifies the device and reduces the cost at the same time.

The present invention provides a highly cost-effective power supply transformer that is easily assembled and capable of ensuring a desired creeping distance between coils, while presenting no concern over insulation breakdown when a voltage is applied. The power supply transformer is provided with a case (10), a first coil (17), a lid body (20), a second coil (27), and a core (30). The case (10) describes the shape of a bottomed double-layered tube. The first coil (17) is accommodated between an inner tube (13) and an outer tube (12) of the case (10). The lid body (20) closes an upper opening of the case (10). The second coil (27) is disposed on a top surface of the lid body (20). The core (30) surrounds the case (10) and the second coil (27). The first coil (17) is made of a solid copper wire alone, the solid copper wire being wound in multiple layers. The lid body (20) is provided with a tubular inner wall section (23) and outer wall section (22) in a flat plate section (21). The second coil (27) is mounted on the flat plate section (21), and the inner wall section (23) and the outer wall section (22) surround the inner circumference and outer circumference of the second coil (27). A guide section (16) is formed on a bottom plate (11) of the case (10), the guide section (16) guiding an end section (17a) of the first coil (17) on the bottom plate side toward the outer tube side. A notch section (15) is formed on the outer tube (12), the notch section being intended to extract the end section (17a) to the exterior.

A conductive charging connector for an electric vehicle, comprising a vehicle end connection portion and a charger end connection portion, the vehicle end connection portion includes an insulating socket structure, the charger end connection portion includes an insulating plug structure, and the plug structure and the socket structure are matched , the plug includes a grounding pole and a power pole, the plug is also provided with a charging control pole, and the socket is provided with a jack to match the plug electrodes, and the heights of the grounding pole, the power pole and the charging control pole decrease in turn. In the present invention, the connecting part of the vehicle end and the connecting part of the charger are connected in a plug-in manner, and the connecting parts of the vehicle end and the connecting part of the charger are respectively provided with corresponding and matched conductors to cooperate. The charging connector can be plugged in directly without intermediate transition structure, and is easy to use. Each electrode adopts a structure with a certain height difference, which eliminates the plugging arc of the connector during engagement and separation, and ensures the safety of operators and vehicles , improve the service life of the connector.

The invention relates to the structural design and manufacturing fields of medium-high voltage switchgears, and discloses an integrally formed embedded electrode component with an inner umbrella skirt and an outer shell. The integrally formed embedded electrode component comprises the outer shell (1), of the electrode component, which is made of a thermoplastic insulating material; and the inner umbrella skirt (2) integrally formed with the outer shell (1) of the electrode component is arranged on the inner peripheral surface of the outer shell (1) of the electrode component. The embedded electrode component disclosed by the invention adopts an integrally formed manner of the inner umbrella skirt and the outer shell, so that the cost is reduced, the production efficiency is improved, the creep distance is guaranteed, the interior space of the electrode component is large, and parts and components in the shell are convenient to disassemble and repair. Moreover, the structure adopted by the design is unlikely to accumulate dirt such as dust, so that the risk that the insulation level is decreased caused by the dirt is reduced.

The invention relates to a three-phase amorphous inductor, which comprises a base and a housing assembly which are matched with each other. The three-phase amorphous inductor is simple in structure, practical and convenient. The three-phase amorphous inductor is suitable for high current and strong interference resistant occasions. The three-phase amorphous inductor is convenient to operate by using cooperation of the base and the housing assembly; the creepage distance can be ensured; the security of a product is improved; the temperature resistance level of the product reaches the F level; the flame retardant level of the product reaches the 94HB level; the housing assembly has the advantages of being small in friction coefficient and low in water absorption rate; and the three-phase amorphous inductor also has the characteristics of being high in magnetic conductivity, large in inductance value, small in volume, low in loss, few in turns of coil, small in distribution capacitance, high in saturation magnetization intensity, high in curie point, and good in temperature stability and frequency characteristic, the applicable frequency range is 50Hz to 300kHz and the optimal frequency range is 1kHz to 100kHz.

The invention relates to an improved microwave variable-frequency power supply assembly and a heat dissipation structure. The power supply assembly is characterized by comprising a shell and a microwave variable-frequency power supply board arranged in an inner cavity of the shell, and a sealed air duct is formed in the inner cavity of the shell. The variable-frequency power supply board comprisesa printed board, a radiator, a transformer, a semiconductor component, a high-voltage diode and a high-voltage capacitor. The semiconductor component is installed on the installation surface of the radiator. The high-voltage diode and the high-voltage capacitor are connected with the voltage output end of the transformer. The radiator is composed of a first radiating body, a second radiating body, a plurality of first radiating teeth and a plurality of second radiating teeth. The first heat dissipation body, the plurality of first heat dissipation teeth and the upper cover form a first air duct, and the second heat dissipation body, the plurality of second heat dissipation teeth and the upper cover form a second air duct. The semiconductor component, the transformer and the printing plateform a third air duct, a primary winding of the transformer, the first high-voltage diode and the bottom shell form a fourth air duct, and a secondary winding of the transformer, the high-voltage diode and the bottom shell 2 form a fifth air duct. The power supply assembly is characterized by ventilation and reasonable heat dissipation air duct arrangement, and the ventilation efficiency is high.

The invention provides a high-voltage electrostatic dust collector cathode plate which is arranged in a dust removal chamber through a connecting part and connected with a cathode of a constant-current high-voltage power source. The cathode plate is composed of multiple modules sequentially arranged between a large left framework and a large right framework from top to bottom. The modules are installed on the large left framework and the large right framework in a hung manner through flexible vibration reducing and damping structures. An independent high-frequency vibrator is arranged on eachmodule. Each module is of a latticed structure composed of a small framework and a cathode bar on which cathode pins are distributed uniformly. Lattices in each module are connected in a non-closed manner. The cathode plate is novel in design, when the vibrators are started or stopped, resonance energy is little, after the vibrators are started, long-time stable resonance-free high-frequency vibration can be generated, dust can be removed efficiently, the discharging ability can be ensured effectively, the service life is long, and the electrostatic dust collector cathode plate has outstandingpracticality and remarkable economic value.

The invention discloses a method for manufacturing an electric locomotive transformer oil pump wiring board. The method comprises the following steps of manufacturing parts, manufacturing a metal wiring board and a metal binding post, stamping an upper metal piece and a lower metal piece, manufacturing a pressure resisting ceramic body, assembling the wiring board, carrying out overall welding and completing manufacturing. The wiring board comprises the metal binding post, the upper metal piece, a 95aluminum oxide ceramic body, the lower metal piece and the metal wiring board. The thickness of the metal pieces is 0.8 mm, and the pressure resisting ceramic body comprises an upper cylindrical segment and a lower cylindrical segment which are integrated. The diameter of the metal binding post is equal to or slightly smaller than the diameter of the inner circle of the pressure resisting ceramic body. The electric locomotive transformer oil pump wiring board manufactured through the method is excellent in performance, easy to mount, easy to process, low in cost and good in insulation performance. The sealing performance and the oil pressure resisting performance of the wiring board are guaranteed through the metal and ceramic welding structure, a 0.8 MPa pressure leakage test is borne, leakage cannot occur, and the service life of an oil pump is prolonged.

The invention provides a cascade module unit applied to a power electronic transformer. The cascade module unit comprises a power module, a power unit board, a thermal management component, a currentdetection component, a redundant loop component, a loop connection component and a module shell, adopts a cascade H-bridge CHB topology, and adopts a star connection method to perform multi-module series connection. The cascade module unit solves the problem of insufficient withstand voltage of a single power electronic device IGBT. The cascade module unit has the advantages that the modular degree of the internal components is high, and the assembly is convenient; the whole module is convenient to assemble, electrical connection can be rapidly achieved, and a hot plug function is achieved; the air volume of a fan is utilized to the maximum extent, and the overall module cooling efficiency is high; a redundancy function is achieved, and the reliability of the system is high; the volume weight is small, and the power density is high; and the overall demetallization degree of the module is higher, the creepage distance and the electrical gap are ensured, and the safety of the module unitis high.

The invention provides an antifouling column type porcelain insulator, and relates to the technical field of insulators. The antifouling column type porcelain insulator comprises a bottom assembly, an extension assembly, a top assembly and a cleaning assembly, and the cleaning assembly is arranged outside the extension assembly; the sweeping assembly comprises a bearing, a plurality of transverse rods are evenly arranged on the periphery of the outer ring of the bearing, vertical rods are fixedly connected to the ends, away from the bearing, of the transverse rods, rotating shafts are fixedly connected to the upper portions of the sides, away from the transverse rods, of the vertical rods, and blocking rods are fixedly connected to the sides, away from the transverse rods, of the vertical rods and located below the rotating shafts; the exteriors of the rotating shafts are rotationally connected with air plates, and all the air plates are located on the same side of the rotating shafts correspondingly connected with the air plates. Through blocking of a blocking rod, when air flow in an outdoor environment blows through, the acting force difference of the wind plates on the two sides is utilized to drive the vertical rod to rotate, then the top surface of the second umbrella skirt is cleaned through a brush, and the anti-fouling effect of the insulator is achieved.

The invention provides a capacitance compensation switch. A silicon controlled module is installed on a heat dissipation base and is arranged in a casing; the control circuit on a control circuit board is provided with a signal input end and a signal output end; the signal input end of the silicon controlled module is electrically connected with the signal output end of the control circuit; the heat dissipation base is provided with a heat dissipation base plate and two side plates and heat dissipation fins; the heat dissipation fins and the two side plates are arranged in parallel; the two ends of the heat dissipation base plate is provided with a protrusion part which is provided with an installation through hole; the side plate of the heat dissipation base plate is provided with an installation groove which is provided with installation screw holes; the lower part of the side plate of the casing is inserted into the installation groove and is fixedly connected onto the side plate through screws and installation screw holes; two connecting terminal rows are installed on the heat dissipation base plates; the silicon controlled module is arranged between the two connecting terminal rows; the controlled silicon module and the connecting terminal rows are electrically connected through an electric conductor; and the control circuit board is installed on the inner wall of the topplate of the casing. The invention has simple and stable structure, convenient installation, easy maintenance, little electromagnetic interference and high reliability.

The invention discloses a large-caliber split type conductive slip ring suitable for a high-humidity environment, which is composed of a center shaft, a combined support, ring pieces, insulating spacers, a pressing plate and an electric brush assembly. The insulating spacer is a stepped spacer which is made of POM (polyoxymethylene) and is high in inside and low in outside, and a wire passing notch is milled in the inner ring of the insulating spacer. The ring piece sleeves the outer circle of the protruding portion of the insulating spacer, and the wire passing notches of two adjacent insulating spacers are staggered by 180 degrees. The creep distance and the gap between the stator and the rotor are ensured through the design of the conductive slip ring structure to control and prevent moisture diffusion, and a high insulation resistance value between rings in a high-humidity environment is used, thereby ensuring integrity and stability of transmitted signals. The application of the large-caliber split type conductive slip ring in a high-humidity environment is realized, great convenience is provided for the field of electric rotation signal transmission, and the problems of integrity and stability of signals transmitted by the large-caliber split type conductive slip ring in a 360-degree rotation mode in the high-humidity environment are solved.

The invention discloses a variable-pitch slip ring. The variable-pitch slip ring comprises a conductive ring and a conductive brush wire, wherein insulating rings are arranged on the two sides of the conductive ring; a groove is formed, surrounding the periphery, in the outer side of the conducive ring; a brush head matched with the groove is arranged at the end part of the conductive brush wire; and the brush head and the bottom of the groove are in line contact or surface contact. According to the variable-pitch slip ring, the width of the conductive ring is kept the same, and the conductive contact area is enlarged by changing the original point contact into line contact or surface contact, so that the contact resistance is reduced and the signal transmission quality is improved; a T-shaped slot structure has a good guide and limiting function, so that the conductive brush wire can be well positioned in the T-shaped slot in rotation without being in contact with the insulating rings; and therefore, an electrical creep distance is well ensured, and stable rotation contact between the brush wire and the conductive ring is ensured as well.

Provided is an environment-friendly gas cabinet isolating switch main shaft. The environment-friendly gas cabinet isolating switch main shaft comprises a base which is provided with three vertical convex columns, each convex column is hollow and forms a slideway, three notches are formed in the front side wall of the base, the notches are communicated with the slideways respectively, the base is provided with multiple rounded pieces which are coaxial with the base, at least four rounded pieces are arranged between every two adjacent convex columns, at least one rounded piece is arranged at each end of the base, front arc-shaped plates penetrating through the rounded pieces are arranged on the front side wall of the base, the top of each front arc-shaped plate is connected with and is flush with the top of the base, the bottom of each front arc-shaped plate is flush with the axis of the base, a rear arc-shaped plate penetrating through the rounded pieces is arranged on the rear side wall of the base, the top of the rear arc-shaped plate is flush with the axis of the base, the bottom of the rear arc-shaped plate is flush with and is connected with the bottom of the base, the base, the convex columns, the rounded pieces, the front arc-shaped plates and the rear arc-shaped plate are made into a whole by means of a high-strength non-metal material, and a cylindrical metal insert and a polygonal metal insert are embedded in the two ends of the base respectively. According to the environment-friendly gas cabinet isolating switch main shaft, few parts are used, assembling is convenient, the insulating property is good, and safe and stable work can be achieved without SF6 gas.

The invention belongs to the field of relays, and specifically relates to a relay socket fixing seat with a sign board, and a relay socket. The fixing seat comprises a left side plate and a right sideplate which are opposite to each other, and a connecting structure which is located between the left side plate and the right side plate and is used for fixing a relay. The sign board is disposed between two side plates, and can rotate relative to the side plates. The sign board is disposed on the fixing seat, and does not need to occupy the space of the relay socket, thereby guaranteeing the creep distance of an internal part. The sign board can rotate, and can rotate according to the needs, thereby enabling the sign surface of the sign board to be at an angle facilitating the observation, achieving the front revelation, and bringing convenience to a user for installation, application, inspection and maintenance.

Provided are a stator capable of ensuring the creepage distance and being applicable to a compact motor, and a permanent magnet rotating electric machine. A motor stator (1) is provided with a yoke core (11) and a plurality of tooth cores (12) extending in the radial direction of the core (11). In the motor stator (1), a plurality of bobbins (13) attached to the tooth cores (12) and produced from an insulating material are provided, the bobbin (13) is configured from a body part (131) around which the exciting winding of the stator (1) is wound, and flange parts (132, 133) formed at both ends of the body part (131), and at an end surface in the circumferential direction of the inner diameter-side flange part (132, 133) of the flange parts (132, 133), a fitting section for fitting projecting and recessed sections of the flange parts (132, 133) of adjacent bobbins (13) to each other to thereby connect the plurality of bobbins (13) in the circumferential direction is provided.

The invention discloses a mounting structure for a switch tube and an air conditioner. The structure comprises: a radiator; and a PCB which is connected to the radiator in a relatively movable mode through a connecting piece, wherein a switch tube is installed between the radiator and the PCB, and the PCB can move relative to the switch tube. According to the mounting structure for the switch tube, the PCB is connected to the radiator in a relatively movable manner through the connecting piece, so that the distance between the PCB and the radiator can be adjusted by moving the PCB, and the switch tube is arranged on the radiator, so that the distance between the PCB and the switch tube is adjusted while the PCB moves, and the mounting structure for the switch tube is convenient to mount and dismount. Therefore, the distance between the PCB and the metal element on the switch tube is prevented from being too short, the creepage distance can be effectively ensured, and the overall reliability is improved.