621 results about "Electromagnetic brake" patented technology

The invention relates to the field of friction materials, and discloses a friction material with a stable friction coefficient for an electromagnetic brake and a preparation method of the friction material. An adhesive comprises polysiloxane modified phenolic resin, benzoxazine and butyronitrile rubber powder; the reinforcing material comprises 1414 para-aramid pulp, calcium sulfate whiskers, composite mineral fibers, copper fibers and modified needle-like wollastonite; the friction increasing material comprises macroporous shell activated carbon, friction particles, garnet powder, barite and nano hafnium nitride; the antifriction material comprises graphite fluoride, nylon and composite modified hydroxyl silicate; the composite modified hydroxyl silicate is obtained by modifying hydroxyl silicate with diisocyanate and stearic acid and then compounding silane modified micro-nano calcium carbonate. The friction material provided by the invention is used for improving the braking stability of an electromagnetic brake and reducing equipment vibration.

The invention discloses a vehicle control method and device and a vehicle. The method comprises the steps that in a current stroke determination period, when it is determined that an accelerator is released and a brake pedal is stepped down, the current stroke of the brake pedal is determined; if the difference value between the current stroke and the previous stroke of the previous stroke determination period is smaller than or equal to a preset difference value threshold value, the current deceleration is determined according to the current stroke, and the motor is controlled to decelerate according to the current deceleration and a proportional-integral control strategy; if the difference value between the current stroke and the previous stroke is larger than a preset difference value threshold value, or the duration of the maximum stroke of the current stroke reaches a first preset duration, an electromagnetic brake is controlled to conduct braking; and in the process of controlling the motor to decelerate, if the duration of the opposite actual rotation direction of the motor to the initial rotation direction reaches a second preset duration, updating the proportional-integral control strategy, and controlling the motor to operate according to the updated proportional-integral control strategy. According to the technical scheme, the vehicle can be better controlled.

The invention relates to the technical field of friction materials, and particularly discloses an electromagnetic brake friction material prepared from granules and a preparation process of the electromagnetic brake friction material in order to solve the problem that an existing electromagnetic brake friction plate is difficult to prepare or insufficient in performance. The reinforcing material comprises plasma modified aramid pulp, coupling modified composite mineral fibers, SiO2 coated tetrapod-like zinc oxide whiskers and carbon fiber-aluminum silicon whiskers; the filler comprises modified needle-like wollastonite and organic modified precipitated barium sulfate; the adhesive comprises boron-silicon synergistic modified phenolic resin and modified carboxy nitrile rubber. The raw materials are improved, and granules are prepared by adopting a mixing and crushing process, so that the content of an adhesive can be greatly reduced, meanwhile, the die filling efficiency can be improved, the die thickness and the high-temperature heat fading of the friction material can be reduced, a cold press molding process can be omitted, and the qualification rate of finished friction materials can be improved.

The invention discloses a vehicle and a control method thereof. The vehicle comprises a battery, a controller and an electromagnetic brake. The electromagnetic brake comprises a coil; the controller comprises a switch unit and a control unit; the first end of the coil is connected with the battery, the first end of the switch unit is connected with the second end of the coil, and the second end of the switch unit is connected with first power supply voltage; the control unit is connected with the control end of the switch unit; the control method of the vehicle is executed by the control unit. The vehicle control method comprises the steps that when an electromagnetic brake does not conduct braking, a control signal is output to the control end of a switch unit according to the actual current and reference current of a coil based on a proportional-integral control strategy, so that the voltage of the coil is controlled, and the current of the coil is controlled; wherein the reference current is rated current or holding current of the electromagnetic brake, the holding current is rated current with a preset proportion, and the preset proportion is smaller than 100%. According to the technical scheme, the stability of the electromagnetic brake is improved.

The utility model relates to the technical field of power split hybrid transmissions, in particular to an electromagnetic brake device for locking a generator shaft, which comprises a cylindrical brake sleeve seat capable of movably sleeving an input shaft of an engine, and an electromagnetic coil assembly mounting position, a push disc mounting position and a driven disc mounting position are arranged on the surface of the brake sleeve seat. The electromagnetic coil assembly mounting position is sleeved with an electromagnetic coil assembly, the driven disc mounting position is sleeved with a driven disc, and a push disc is movably arranged on the push disc mounting position; a disc spring is arranged on the side, facing the driven disc, of the push disc, and an iron core in the electromagnetic coil assembly can act on the push disc to enable the push disc to move towards the driven disc and be connected with the driven disc in a clamped mode. The outer end face of the driven disc is provided with an output disc capable of being connected with a generator shaft in a sleeved mode. Compared with other types of locking mechanisms, the electromagnetic braking device has the advantages that the change amount of the vehicle is small, the structure is simple and compact, the control logic is simple, and the control effect is good.

The utility model relates to the technical field of wheel hub motors, and in particular to a brushless DC wheel hub motor; it comprises a wheel hub module, a motor module, a reduction box module, and a built-in electromagnetic brake system module; the motor shaft of the motor module passes through the housing of the reduction box module and is connected with the electromagnetic brake friction plate of the built-in electromagnetic brake system module; the built-in electromagnetic brake system module is also provided with a brake coil, a brake spring, and a brake armature; the spring pops out the brake armature, the brake armature limits the electromagnetic brake friction plate, and the electromagnetic brake friction plate locks the motor shaft of the motor module; after the brake coil is energized, a magnetic brake spring is generated and the brake armature is attracted, the brake armature is separated from the electromagnetic brake friction plate, and the motor shaft of the motor module is unlocked, thereby achieving the effects of low cost, small size, low power consumption, high low-speed torque, large rated output speed range, and high brake sensitivity.

The utility model relates to the technical field of brakes, and provides an electromagnetic brake convenient to adjust an air gap, which comprises a stator, an armature and a brake disc which are sequentially arranged in the axial direction, and further comprises a dustproof flange cover, the dustproof flange cover is arranged outside the stator in a matched mode, and the brake disc is arranged between the dustproof flange cover and the armature; an air gap measuring hole is formed in the side of the dustproof flange cover, and a locking screw used for abutting against the stator is screwed into the side of the dustproof flange cover. According to the utility model, the air gap can be adjusted more quickly and conveniently, and the operation is simple.

Among other things, a rowing technology includes a first rowing machine having an electromagnetic brake providing a resistance to a rower of the machine in each rowing stroke of a series of rowing strokes of the rower An electronic controller causes the resistance of the electromagnetic brake to vary over each rowing stroke in a profile that emulates resistance to which another rower in a shell on water or on a second rowing machine is subjected in each rowing stroke of a corresponding series of rowing strokes.

The invention provides a medical CT hospital bed vertical lifting mechanism and a medical CT hospital bed, the medical CT hospital bed vertical lifting mechanism comprises a top plate, a shear fork mechanism, a driving system, a base, a detection device and a limiting device, the driving system comprises a rigid chain, a worm gear reducer, a servo motor and an electromagnetic brake, and the output end of the servo motor is connected with the worm gear reducer; the output end of the worm gear reducer is connected with the rigid chain, the electromagnetic brake is connected with a driving shaft of the rigid chain, the top plate is driven by the rigid chain to move up and down, and the detection device is used for monitoring the height of the top plate. The top plate and the base are each provided with a guide device matched with the shear fork mechanism. The limiting device comprises a mechanical limiting device and an electric limiting device. A dual-mode safety system with worm and gear self-locking and electromagnetic braking is adopted, so that the sickbed can be prevented from falling under extreme working conditions such as power failure, and dual guarantee of dynamic and static safety can be realized; and the safety of equipment and personnel is guaranteed through a triple protection framework of electric limiting and mechanical limiting.

The utility model relates to the technical field of electromagnetic brake production, in particular to electromagnetic brake friction surface machining equipment which comprises a workbench, a supporting frame, an electric guide rail, a clamping assembly and a polishing assembly, the upper end face of the workbench is connected with the supporting frame, a groove is formed in the workbench, and the electric guide rail is connected into the groove; the clamping assembly is connected to the moving end of the electric guide rail, and the grinding assembly is connected to the supporting frame. According to the friction plate clamping device, when the clamping ends of the clamping assembly are in the use state, the multiple clamping ends can synchronously move towards the circle center position, friction plates to be machined are clamped and fixed through movement of the multiple clamping ends, meanwhile, when the friction plates with different thicknesses are machined, the height of the moving end in the height adjusting assembly can be adjusted, and the friction plates with different thicknesses can be clamped and fixed. And after the height of the moving end is changed, the height of the clamping end is also changed, so that the situation that the clamping end is higher than the friction plate to affect normal grinding is prevented.

The invention discloses a high-stability electromagnetic brake convenient to disassemble and assemble, and relates to the technical field of brakes. Comprising a shell, a base is installed on the top of the shell through a connecting shaft, a rotating shaft channel is formed between the base and the top of the shell in a penetrating mode, an armature is arranged on the portion, located on the surface of the rotating shaft channel, between the base and the shell in a sleeving mode, an electromagnetic coil is arranged in the shell, and an installation mechanism is arranged at the bottom of the shell. A compensation assembly is arranged at the top of the armature, a rotating disc is rotationally connected to the position, located on the surface of the periphery of the rotating shaft channel, in the cavity in the device shell, a connecting rod is arranged in the armature in a limiting mode, an unlocking assembly is arranged at the bottom of the shell, and the armature and the shell are installed easily and can be operated by one person; gaps in all directions between the armature and the electromagnetic coil are ensured to be the same, adjustment is easy, and automatic compensation after the brake pad is abraded is achieved.

The utility model discloses a torsion detection device for an electromagnetic brake. The torsion detection device comprises a workbench, a mounting seat, a transmission push cylinder, a clamp holder, a mounting frame, a detector and a sound insulation device, the sound insulation device is arranged, and the transmission shaft is driven to rotate by starting the driver, so that the transmission shaft can drive the sound insulation cover to rotate towards the top of the mounting seat, and the top of the mounting seat is shielded and covered; the sound insulation device is arranged in the sound insulation cover, the sound insulation cover is matched with the sound insulation pad arranged in the sound insulation cover to block and eliminate noise generated during testing, so that the noise can be quickly dissipated, the harm of the noise is reduced, and abnormal sound and noise generated in the testing process are isolated by arranging the sound insulation device; therefore, the problems that in original equipment, due to the fact that an electromagnetic brake makes contact with a direct fixing assembly, when the electromagnetic brake outputs power, the electromagnetic brake easily shakes, the electromagnetic brake slightly collides with the fixing assembly, and abnormal sound is caused are solved.

The invention relates to the technical field of forklifts, and discloses an all-wheel brake system and a counterbalance forklift truck, the all-wheel brake system comprises a driving motor, a first electromagnetic brake, a driving axle assembly, a driving wheel, a traveling pedal brake assembly, a steering motor, a second electromagnetic brake, a steering axle assembly, a driving wheel and the like. The first electromagnetic brake is arranged on the driving motor, and meanwhile, the second electromagnetic brake is arranged at the position of the steering wheel, so that four-wheel stable all-wheel braking of the forklift can be realized no matter in a manual driving mode or an automatic control mode, and the safety of the driving and parking process of the forklift is improved. And meanwhile, the encoder is additionally arranged in the motor, so that the accuracy and the reliability of vehicle operation are improved. And meanwhile, the two modes of manual driving and automatic control can be compatible, the use purpose of the forklift is expanded, and one machine with two purposes is achieved.

The utility model discloses a duplex winding electromagnetic brake which comprises a first winding, a second winding, a static iron core and a movable iron core, the first winding and the second winding are wound on the static iron core, a spring is arranged between the static iron core and the movable iron core, the static iron core is fixedly connected with a fixed plate assembly, and an internal spline is arranged between the movable iron core and the fixed plate assembly. The inner spline is located in the center of the outer spline and meshed with the outer spline, the outer spline can be fixedly connected with a motor rotating shaft, the braking effect on the motor is achieved, after the first winding or the second winding is powered on, a winding coil generates electromagnetic force, the movable iron core and the static iron core can be attracted, and the unlocking function is achieved. According to the utility model, the two sets of windings not only improve the reliability of electromagnetic braking and ensure reliable unlocking, but also are wound on the same static iron core and share one magnetic circuit, so that the space can be saved.

The utility model relates to the technical field of unmanned aerial vehicle propeller braking, in particular to a mechanical brake structure suitable for an aircraft wing, which comprises a motor, a brake disc, a steering engine, a steering engine rocker arm and a tension spring, the brake disc is composed of an annular brake pad, a flexible brake pad and a traction arm, the brake pad is arranged in front of a rotor of the motor, the steering engine rocker arm swings, the brake pad is pushed through the traction arm, and the flexible brake pad is separated from the rotor of the motor; the rear end of the traction arm is further connected with a tension spring, the tension spring is in a stretched state, and the brake pad is pulled through the traction arm so that the flexible brake pad can make contact with a rotor of the motor. The electric energy loss of the brake device is reduced, the endurance time and the cruising distance of the aircraft are increased, the locking mode and the working mode of the motor can be freely switched according to requirements, and the reliability of a mechanical structure is larger than that of an electromagnetic brake structure.

The utility model provides an electromagnetic brake convenient for heat dissipation, which comprises a heat dissipation assembly, and the heat dissipation assembly is arranged at the lower part of an electromagnetic brake body and comprises a fixed seat and a plurality of groups of heat dissipation fins; the radiating fins can absorb heat generated in the braking process and discharge the heat, the radiating area can be increased by arranging the multiple sets of radiating fins, the heat can be effectively transmitted to the external environment, and the phenomenon of overheating caused by accumulation of the generated heat in the electromagnetic brake body is avoided; the electromagnetic brake body can be kept within a proper working temperature range, the operation stability of the electromagnetic brake body is guaranteed, and the service life of the electromagnetic brake is prolonged.

The utility model discloses a torque adjustable electromagnetic brake which comprises a magnet yoke, an electromagnetic coil, reset compression springs, an armature, a brake disc, a cover plate and an adjusting stud, a plurality of compression spring blind holes and a plurality of compression spring through holes are formed in the magnet yoke, and a plurality of fixed reset compression springs are installed in the compression spring blind holes respectively. The adjustable reset compression springs are installed in the compression spring through holes respectively, internal threads are arranged on the hole walls of the middle sections of the compression spring through holes, the adjusting studs are installed in the compression spring through holes respectively and connected with the compression spring through holes in a threaded mode, and the adjustable reset compression springs are located between the corresponding adjusting studs and the armature. On the premise of not replacing parts, not increasing the use cost and not influencing the production schedule, the brake torque adjusting function is achieved, the problem that the torque is reduced due to the fact that the elastic force of a reset compression spring is reduced after long-term use can be solved, the problem that the brake torque needs to be changed due to application scene changes can also be solved, and the brake torque adjusting function is achieved. And the application range of the electromagnetic brake is wider.

A frame is provided for an actuator assembly of a vehicle brake having a housing enclosing a gear stage and a motor for delivering torque to the gear stage. The frame includes a base having a first interface for connecting to the gear stage and a second interface for connecting to the motor. Projections extend outward from the first interface for receiving fasteners to secure the base directly to the housing and transfer loads from the motor to the housing during braking operations.

The invention relates to the field of brakes, in particular to a double-disc type electromagnetic-EMB composite brake and a control strategy thereof. The invention innovatively designs a double-disc type electromagnetic-EMB composite brake with a compact structure aiming at an EMB braking structure widely adopted by a distributed driving electric vehicle. According to the brake, the electromagnetic brake is embedded into an original friction disc, and organic combination of friction braking and electromagnetic braking is achieved. Based on the hybrid control theory, the invention designs a mode switching control strategy of the composite braking system. The method comprises the following steps of: modeling each system by utilizing MATLAB / Simulink, and setting different simulation working conditions; simulation results show that the electromagnetic-friction-regeneration composite braking structure has good feasibility, and comparative analysis under different working conditions further proves the rationality of hybrid automaton control strategy design.

The invention belongs to the technical field of vehicle braking, and particularly relates to a control method and system for a vehicle slope rushing braking current, and the method comprises the steps: when an electric forklift is in a slope rushing braking state, controlling a motor current to reach a first braking current, and obtaining a rising slope of the motor current in a first time period; performing multiple tests under different gradients, collecting test data to establish a first mathematical model, determining a first relationship between the rising slope and the voltage, and calculating a voltage falling control curve under a specific slope based on the first relationship; after the output voltage of the motor controller is zero, the current at zero voltage is obtained, a compensation current control curve is determined, and voltage output is adjusted to reach compensation current; and when the compensation current is reached, the motor controller also predicts the rotating speed of the motor, and when the rotating speed of the motor is reduced to zero, the motor controller closes the electromagnetic brake and stops the current control, so that the slope rushing braking process is completed. According to the invention, safe break-through braking and a current limiting function can be realized.

The utility model discloses an intelligent tray threading device, which relates to the field of threading devices and comprises a mounting shell, the mounting shell is composed of a first side plate and a second side plate, a first driving motor and a second driving motor are mounted on one side of the first side plate, and electromagnetic brakes are arranged at the ends of the first driving motor and the second driving motor. A gear is mounted on one side of the electromagnetic brake, and a guide chain is arranged in the mounting shell. The output end of the first driving motor is in transmission connection with the guide chain, the output end of the second driving motor is in transmission connection with the guide chain, the control unit is arranged to enable the first driving motor and the second driving motor to output power to execute commands, and the extension length of the guide chain is set through the control unit. And when the guide sliding frame passes through the boss, the guide sliding frame can be separated from the guide chain, and the guide chain can be continuously used next time conveniently.

The invention relates to a continuous feeding device, and provides a magnetic yoke continuous feeding device for electromagnetic brake machining. Comprising an equipment frame, and a control panel is arranged on the equipment frame; the guard plates convenient to disassemble and assemble are mounted on the front and rear sides of the equipment frame; the two main body brackets are symmetrically mounted at the lower part in the equipment frame front and back, and transmission paths are arranged on the main body brackets; the conveying chain is arranged on the upper portion in the main body support along the conveying path, tools used for containing workpieces are arranged on the conveying chain in a matched mode, and the tools are conveyed in the conveying path through the conveying chain; the number of the lifting material conveying tables is two, and the lifting material conveying tables are arranged at the rightward ends of the two main body supports correspondingly and used for lifting the workpieces conveyed on the conveying chain set. Through the synergistic effect of the limiting frame and the unstacking arm, efficient layered push-out of tool workpieces is achieved, and workpieces of different sizes are flexibly adapted; the unstacking arm directly acts on the bottom layer of a workpiece, and pre-layering-free continuous feeding is achieved through interlayer sliding stripping.

The invention relates to the technical field of electromagnetic brakes, in particular to an electromagnetic hydraulic braking structure and electric control electromagnetic hydraulic braking calipers. The electromagnetic hydraulic braking structure comprises a combined piston assembly, the combined piston assembly comprises a piston cylinder, the piston cylinder is provided with a first piston cavity and a second piston cavity which are communicated with each other, the first piston cavity is provided with a combined outer piston and a combined inner piston in a penetrating mode, and the second piston cavity is provided with a pressurizing small plunger in a penetrating mode; an oil storage cavity is formed outside the piston cylinder, and a plurality of oil holes are formed in the side wall of the piston cylinder and are communicated with the first piston cavity and the oil storage cavity; the electromagnet assembly comprises an armature, and the armature abuts against the combined inner piston; and the hydraulic braking assembly is internally provided with an oil way and communicates with the second piston cavity, and multi-stage pressure amplification is achieved through double-cavity linkage. Gap fluctuation between the brake pad and the brake disc in the braking process can be effectively controlled, the characteristic of large suction force of the tail end of the electromagnet is efficiently utilized, and meanwhile the stable braking effect is achieved.

The invention is suitable for the technical field of brakes, and provides an energy-saving electromagnetic brake which comprises a stator and a flange plate, and a rotor capable of being matched with a target transmission shaft to synchronously rotate and an armature controlled by a coil and a spring are arranged in a gap between the stator and the flange plate; the spring can push the armature to be away from the stator so that the armature can abut against the friction plate for braking. The coil can attract the armature to approach the stator to separate the armature from the friction plate to cancel braking; a release plate used for limiting the armature is installed on the side, close to the flange plate, in the gap. The brake is provided with an external matching mechanism capable of controlling the release plate to limit or cancel limit of the armature, and the external matching mechanism adopts a push-pull type electromagnet. Therefore, the device can be kept in an open state without being electrified for a long time in an equipment operation working condition, so that unnecessary energy loss is reduced.

The invention relates to the field of friction materials, and discloses an electromagnetic brake friction material used for an ultra-long time working condition and a preparation method of the electromagnetic brake friction material. The modified polyimide is a polyimide-silicon rubber interpenetrating complex, and the preparation method of the modified polyimide comprises the following steps: blending a silicon rubber prepolymer with a polyimide precursor and a silicon rubber prepolymer curing agent, and curing to obtain the interpenetrating complex; the reinforcing material comprises aramid pulp, copper fibers, potassium magnesium titanate lamellas, tetrapod-like zinc oxide whiskers and modified aluminum titanate fibers; the friction increasing material comprises nano aluminum hydroxide, fluororubber powder, barite, silicon carbide, feldspar powder, modified white carbon black and cashew nut shell oil friction powder; the antifriction material comprises halloysite nanotubes coated with redox graphene, molybdenum carbon phosphate and graphite fluoride. The friction material provided by the invention can meet the requirements of strength, heat resistance and wear resistance under an ultra-long working condition, and meanwhile, the thermal expansion at high temperature can also be reduced.

The invention discloses an electromagnetic brake wear-resistant coating working state detection device, and relates to the technical field of wear-resistant detection devices.The electromagnetic brake wear-resistant coating working state detection device comprises a device base, a lead screw lifting machine is mounted in the middle of the rear side of the device base, a cover is mounted at the position, located above the device base, of the front side of the lead screw lifting machine, and a cleaning mechanism is mounted in the cover; a clamping and fixing mechanism is installed in the device base, the cleaning mechanism comprises a first rotating disc, a first penetrating groove is formed in the surface of the first rotating disc, a limiting disc is arranged below the first rotating disc, telescopic arms are arranged in sliding grooves in the limiting disc in a limiting and sliding mode, and containing blocks are arranged at the other ends of the two telescopic arms; and an angle adjusting assembly is mounted at the top of the accommodating block, so that the problems that dust generated during friction is attached to the surface of a test piece and is inconvenient to clean, and the dust of the test piece is inconvenient to clean in a concentrated manner due to different sizes of the test piece are solved.

The invention discloses a motor direct-drive speed reducer for an oil pumping unit, which comprises a motor connected with a three-stage four-shaft gear reducer through a coupler assembly. The coupling assembly is further provided with an electromagnetic brake used for braking. In the structure of the three-stage four-shaft gear reducer, bevel gear transmission is adopted for the first stage, and cylindrical gear transmission is adopted for the second stage and the third stage. The rotary motion of the motor is converted into the rotary motion of the output shaft through transmission of the device, the rotating speed of the motor is reduced, and the output torque is increased; an original V-belt transmission structure is avoided, and the compactness of the transmission structure of the oil pumping unit is improved; the equipment mounting area is reduced. In terms of a mechanical transmission structure, V-belt transmission is replaced by gear transmission, so that the transmission efficiency of the device is effectively improved; original V-belt transmission is changed into gear transmission, and equipment faults and maintenance work are reduced.

The utility model discloses an electromagnetic brake with an anti-locking manual release function, which comprises a stator, an armature, a brake disc, a cover plate, a movable block and an adjusting screw, a stator convex ring is arranged on the circumferential edge of one end of the stator close to the armature, a stator through hole is arranged on the stator convex ring, an armature through hole is arranged on the armature, an adjusting screw hole is arranged on the movable block, and the adjusting screw hole is arranged on the movable block. The movable blocks are arranged between the armature and the cover plate, screw rods of the plurality of adjusting screws penetrate through the plurality of stator through holes and the plurality of armature through holes which are in one-to-one correspondence and then are connected with adjusting screw holes in the plurality of movable blocks, and the movable blocks can move in the direction parallel to the axial direction of the adjusting screws and cannot rotate in any direction. According to the utility model, the adjusting screw is in clearance fit with the stator and the armature, and the movable block is in clearance fit with the armature and the cover plate, so that after the relative positions of the cover plate, the armature and the stator are changed, the adjusting screw can adaptively follow the position change, cannot be blocked, and can still realize a manual release function.

The invention discloses an integrated coil framework structure for an electromagnetic brake coil and a preparation method, the integrated coil framework structure comprises a coil wire spool and an integrated plug-in device, and the integrated plug-in device is vertically provided with a terminal accommodating cavity A and a terminal accommodating cavity B side by side towards a wire winding space; a wire passing clamping groove A is transversely formed in the upper portion of the terminal containing cavity A in a penetrating mode, a wire passing clamping groove B is transversely formed in the upper portion of the terminal containing cavity B in a penetrating mode, enameled wires are correspondingly wound in the winding space of the coil winding disc, and an inner connecting terminal A is inserted into the terminal containing cavity A in a matched mode. The first end of the enameled wire transversely penetrates through the wire passing clamping groove A and is electrically connected with the inner connecting terminal A inserted into the terminal containing cavity A. The inner connecting terminal A is provided with an external terminal inserting groove A. According to the invention, the integrated plugging device is formed and constructed on the end side of the coil wire spool, and through the integrated plugging device, centralized and accurate tightening and positioning of the starting end and the tail end of the enameled wire wound on the coil wire spool and riveting type tight positioning and electric connection of the inner connecting terminal and the enameled wire are realized.

A medical instrument support device is provided which not only allows easy adjustment of the position and angle of a medical instrument and ensures that a specified position and angle is maintained, but also has a simple mechanism and can be easily miniaturized. [Solution] A support device for medical instruments that has a fixture for fixing the device to a bed base or the like, a joint shaft in the middle, and a ball joint 101 at the tip, in which the ball joint has a rod 201 that moves back and forth when rotated, and a lock / unlock control means consisting of a rotary solenoid 202 that rotates the rod, an electromagnetic brake is provided on the joint shaft, and a switch that can simultaneously lock and unlock the ball joint and joint shaft.