65 results about "Coil insertion" patented technology

The present disclosure relates to a manual motor starter and, more specifically, to a trip device for a manual motor starter. A trip device for a manual motor starter according to an embodiment of the present disclosure comprises: a trip unit body forming the base of a trip unit; a fixed contact coupled to the lower portion of the trip unit body; a heater assembly inserted and coupled to the trip unit body and detecting the heat variation; a coil coupled to the upper portion of the trip unit body; a core unit inserted into the coil; a terminal rod coupled to the core unit and the trip unit body, and having one end portion forming a terminal unit; and an instant trip lever which is rotatably coupled to the trip unit body and is operated by the core unit, wherein a coil attachment portion in which the coil is inserted and installed protrudes from the trip unit body.

Provided is an array device for a hairpin type stator coil. The array device, configured to array hairpin type stator coils on at least one array jig transported through a conveyor, may include i) a frame, ii) at least one magazine that is arranged in a magazine stack part installed in the frame and has the stator coils loaded along a set loading direction, iii) a magazine loading unit that is installed in the frame to load the at least one magazine into a magazine tilting part arranged in front of the magazine stack part, iv) at least one buffer unit that is arranged in front of the magazine tilting part, v) at least one cartridge unit that is arranged in front of the at least one buffer unit, and vi) a coil insertion unit that is arranged in front of the at least one cartridge unit to insert the stator coils.

The present invention relates to a circuit breaker manipulator for performing a high-speed cycle blocking operation, comprising: a frame part composed of a magnetic body of which the centers of the front and rear surfaces are penetrated such that a front through-hole and a rear through-hole are formed therein and which has an upper plate having an upper through-hole formed in the center of the upper portion thereof, and a lower plate having a lower through-hole formed in the center of the lower portion thereof; a plunger part which is disposed to be spaced apart from the outer lower portion of the lower plate, and which has a plunger having a first through-hole penetrating the center thereof; a first coil part, which is inserted through the front through-hole or the rear through-hole so as to be arranged to penetrate the frame part, has a first coil having a second through-hole penetrating the center thereof, and applies, to the plunger part, magnetic force in the direction corresponding to current flowing in the first coil; and a second coil part, which has a second coil having a third through-hole penetrating the center thereof, is disposed to be spaced apart from the outer lower portion of the lower plate, is disposed to be spaced apart from the upper portion of the plunger part, and applies, to the plunger part, magnetic force in the direction corresponding to current flowing in the second coil.

The present invention relates to a hairpin wound around a stator and, more specifically, to a hairpin with improved ease of manufacture and assembly. In the hairpin and a method for manufacturing and assembling the hairpin according to the present invention, the hairpin includes at least two bending parts, and thus, when applied to an induction motor having a low number of poles, prevents the end height of a coil assembly comprising the hairpin from becoming excessively high, reduces manufacturing costs, and can ensure motor performance. Moreover, when a plurality of the hairpins are inserted into the stator, a portion of the overlapping parts of the hairpins is bent toward the outside of the center of the stator, thereby having the effect of making it easy for the plurality of hairpins to be inserted overlapped.

The utility model discloses an automatic rod coil assembling and detecting production line which comprises transfer jig conveying belts at the upper end, the lower end and the right side end, magnetic core assembling machines are arranged above the two sides of the transfer jig conveying belt on the right side, and a mechanical arm is arranged between a winding machine and the magnetic core assembling machines. The transfer jig conveying belt at the lower end penetrates through the drying furnace and then reaches the image detector on the left side; the tray placing area is arranged at the upper end of the left side, and the tray placing robot is arranged between the tray placing area and the image detector. The utility model has the advantages that the coil cannot be damaged when falling off, and the relative position of the coil and the magnetic bar cannot be changed during drying; in addition, the magnetic bar can be inserted into the coil while changing shaking, and interference between the magnetic bar and the coil is prevented; in addition, a two-time positioning method is adopted, so that the accuracy of the coil insertion position is ensured.

The utility model relates to the technical field of motor stator coil installation auxiliary tools, in particular to a motor stator coil insertion tool which can enable the periphery of a stator coil to descend synchronously, prevent the stator coil from inclining and being clamped, enable the stator coil to be installed more smoothly and bring convenience to workers. Comprising a base, three sets of ground feet are fixedly arranged at the bottom end of the base in an annular array mode, three sets of supporting plates are fixedly arranged at the top end of the base in an annular array mode, clamping studs are arranged on the three sets of supporting plates in a screwed mode, and the outer ends of the three sets of clamping studs are fixedly sleeved with rotary knobs. A guide sleeve is fixedly arranged on one side of the support, a guide rod is fixedly connected to one side of the top end of the pressing disc, the guide rod is arranged on the guide sleeve in a sliding mode, and a limiting plate is fixedly connected to the top end of the guide rod.

The invention relates to a method and a device for manufacturing a star yoke stator of an electric motor with distributed windings, and to a stator obtained by means of said method. A two-component stator is provided with a central star element provided with radial stator teeth and stator slots between the teeth, and a yoke in which the star element is inserted, and windings are received in the stator slots. The assembling method comprises the following steps of: positioning the star-shaped piece on the rotating main shaft; a linear portion of a coil formed of a wire pre-formed on a winding tool and preferably pressed and carburized is inserted into a stator slot to maintain an ordered arrangement of the wire. Winding is completed by alternating actions of inserting coils into stator slots and rotating stars. When the yoke is integrally formed, the yoke may be coupled to the star in a final step, or the yoke may be constructed by coupling sectors of the yoke around the star when the winding is completed. An apparatus configured for implementing the described method is also described. The invention further relates to a stator obtained directly by said method, and to an electric motor incorporating such a stator. According to the invention, a larger filling coefficient, higher efficiency, smaller leakage current and lower stator height are realized.

The utility model discloses a coil inserting machine. The automatic coil inserting device comprises a rack, an assembly line module arranged on the rack and used for transferring a circuit board, a feeding module arranged beside the assembly line module and used for providing a coil, and a plug-in manipulator module arranged between the feeding module and the assembly line module and used for grabbing the coil and installing the coil on the circuit board. The positioning and moving module is arranged below the assembly line module and is used for positioning circuit board matched plug-ins; and the detection device is arranged below the plug-in manipulator module and is used for acquiring coil pin information. The detection device is arranged below the plug-in manipulator module to detect the positions of the pins at the bottom of the coil, so that the plug-in manipulator module can obtain the accurate positions of the pins according to the detection device after grabbing the coil, and the coil is inserted into a hole site in a circuit board; production interruption caused by mismatching of the coil pins and the hole sites of the circuit board can be avoided, damage and deformation of the coil pins to the circuit board can be prevented, and meanwhile production efficiency can be improved.

The invention relates to an electromagnetic excitation system (1) for an electromagnetic brake (2) or clutch, comprising an electromagnet (10) and a permanent magnet (40), the electromagnet (10) comprising a pot-shaped and annular housing (20) about a longitudinal axis (L), the housing (20) having an inner ring portion (22), an outer ring portion (24), a bottom portion (26) connecting the inner ring portion (22) and the outer ring portion (24), and an excitation coil (30), an excitation coil (30) is inserted between an inner ring portion (22) and an outer ring portion (24) in a housing (20), a free end of the outer ring portion (24) forms a magnetic pole (15), a permanent magnet (40) is provided on a flange (50) on a side away from the excitation coil (30), and the flange (50) is provided on a side away from a bottom portion (26) of the excitation coil (30) and protrudes from the inner ring portion (22) toward the outer ring portion (24), an air gap (60) is formed between the flange (50) and the outer ring portion (24).

This motor has a stator having an annular stator core having a plurality of slots arranged in a circumferential direction, a plurality of coils inserted into the plurality of slots, and a plurality of plate-like bus bars connected to the plurality of coils. The plurality of bus bars each have a bus bar body part extending along the circumferential direction, and a bus bar connection part that extends from the bus bar body part toward a first direction, which is one side in a normal direction with respect to each of the circumferential direction and a plate thickness direction of the bus bar. The plurality of coils are formed by winding rectangular wiring around the stator core, and have a coil end part disposed separated from the bus bar body part in the first direction. The bus bar connection part has: a support part that comes into contact with a portion of the coil end part in a second direction opposite to the first direction and defines the position of the coil end part in a central axis direction; and a first surface contact part and a second surface contact part that make surface-to-surface contact with a first surface, which is one surface of the coil end part in the plate thickness direction, and a second surface, which is the surface on the other side.

To provide a winding component which can be easily manufactured and in which a bobbin and a coil can be accurately positioned, and to provide a power supply device.SOLUTION: Positioning can be performed at a plurality of positions by the first and second positioning mechanisms 5070 and. Further, the second positioning mechanism 70 includes, as the second locking portion 71, a hole 73 that receives the second engaging portion 72. By engaging the second engaging portion 72 with the hole portion 73, the second positioning mechanism 70 can restrict the displacement between the bobbin 40 and the coil 20 over the entire circumference. As a result, the bobbin 40 and the coil 20 can be accurately positioned. On the other hand, the first positioning mechanism 50 includes a guide portion 53 that relatively guides the first engagement portion 52 to the first lock portion 51 along the insertion direction D1 when the coil 20 is inserted into the bobbin 40. Therefore, when the coil 20 is inserted into the bobbin 40, positioning can be easily performed only by moving the coil 20 along the guide portion 53.SELECTED DRAWING: Figure 4

The method for manufacturing a stator comprises: a segment coil insertion step in which a segment coil (30) having a coil end part (32A) serving as a coil end section (32) is inserted into each of a plurality of slots (13) of a stator core (10) such that the coil end part projects from an end face (10a) of the stator core in an axial direction along the axial direction to an outer surface in the axial direction; and a bending step in which, after the segment coil insertion step, each of a plurality of the coil end parts is bent in a circumferential direction of the stator core up to a tip end section (32Aa) of each of the plurality of coil end parts by moving a bending tool (200) relative to the stator core in a direction along the circumferential direction, each of the plurality of coil end parts being inserted into a recess (201) of the bending tool, the recess extending along the coil end part.

The positioning can be performed at a plurality of positions by the first positioning mechanism and the second positioning mechanism. Further, the second positioning mechanism has a hole portion for receiving the second engaging portion as the second locking portion. By engaging the second engaging portion with the hole portion, the second positioning mechanism can restrict the displacement between the bobbin and the coil over the entire circumference. Thus, the bobbin and the coil can be accurately positioned. On the other hand, the first positioning mechanism includes a guide portion for relatively guiding the first engaging portion to the first locking portion along the insertion direction when the coil is inserted into the bobbin. Therefore, when the coil is inserted into the bobbin, the coil can be easily positioned only by moving the coil along the guide portion.

A rotating electric machine includes a rotor and a wound stator. The wound stator has a stator shaft, wherein the stator coils are inserted in the rotor, and the stator shaft is inserted in the center of the rotor. At least one angular position sensor of the rotor is inserted in the center of the space delimited by the stator shaft and the rotor.

The present invention relates to a manual motor starter and, more specifically, to a trip device for a manual motor starter. A trip device for a manual motor starter according to an embodiment of the present invention comprises: a trip unit body forming the base of a trip unit; a fixed contact coupled to the lower portion of the trip unit body; a heater assembly inserted and coupled to the trip unit body and detecting the heat variation; a coil coupled to the upper portion of the trip unit body; a core unit inserted into the coil; a terminal rod coupled to the core unit and the trip unit body, and having one end portion forming a terminal unit; and an instant trip lever which is rotatably coupled to the trip unit body and is operated by the core unit, wherein a coil attachment portion in which the coil is inserted and installed protrudes from the trip unit body.

The invention provides a protection device for nuclear magnetic resonance equipment and the nuclear magnetic resonance equipment. The protection device comprises a protection cover, the protection cover is arranged on a socket of the nuclear magnetic resonance equipment in a position-adjustable mode, and the protection cover is provided with a first position for avoiding an electric connection hole of the socket and a second position for shielding the electric connection hole of the socket; the first end of the transmission wire is connected with the protective cover; the second end of the transmission wire is connected with the mating part, and the mating part is extruded by the coil to move in the insertion direction of the coil in response to the fact that the coil of the nuclear magnetic resonance equipment is inserted into the electric connection hole so as to drive the protective cover to move from the second position to the first position through the transmission wire; and the elastic reset piece is used for providing reset force for the protective cover to reset from the first position to the second position. The problem that in the prior art, nuclear magnetic resonance equipment is poor in dustproof effect is solved.

Provided is a clamping device for manufacturing a stator with hairpin-type coils. The device includes a main body, a sub-body that moves vertically, a core inner clamper that grips the stator core's inner diameter, and a coil inner clamper for lower coil portions. A shuttle plate and lifting plate support an upper coil clamp unit above a lower coil clamp unit, both positioning the stator core and coils at multiple angles for processes like coil insertion or welding. At least one sub-actuator moves the lower coil clamp independently from the lifting plate, allowing precise coil engagement. The upper and lower coil clamp units each includes clamp needles with multiple contact surfaces for radial and lateral clamping. By stabilizing the coils during production, the device minimizes positional errors and improves manufacturing efficiency.

The present disclosure discloses a sound device including a frame, a magnet system, a first vibration system and a second vibration system. The magnet system includes a first inner yoke, a main magnet, a side magnet, a first side yoke, and a connection portion. A first coil of the first vibration system is inserted in to a first magnetic gap. A first FPC of the first vibration system includes a first fixation portion, a first welding portion welded to the first coil, and a first elastic portion connecting the first fixation portion with the first welding portion; the first elastic portion is spaced apart from the first side yoke along a vibration direction; the first welding portion is fixed to a side of the first side yoke facing the first diaphragm. The sound device has better magnetic field performance and vibration performance.

This rotary electric machine includes: a stator having an annular stator core having a slot into which a coil is inserted and a flow path through which a cooling fluid for cooling a coil end of the coil flows; and a rotor. The flow path is composed of a coil end cover covering the coil end and a connection plate part constituting a part of a radially outer side surface of the flow path. The connection plate part has a conductor exposure part electrically connected to the coil and provided so as to protrude outward in the radial direction. A temperature sensor is attached to the conductor exposure part.

The utility model discloses a four-leg coil insert which comprises a spring cylinder, four sets of supporting legs are distributed on the outer side of the spring cylinder, each supporting leg is composed of a vertical part, a bent part and a horizontal part, a connecting sleeve is fixed in the spring cylinder, an inner thread is arranged on the inner wall of the connecting sleeve, a steel column is arranged in the connecting sleeve, and the steel column is connected with the spring cylinder. And external threads are arranged on the outer side wall of the steel column. The embedded part has the advantages that an original integrated embedded part is divided into four sets of independent inserting parts, the positions of the inserting parts can be adjusted according to actual conditions in the embedding process, applicability is high, operation is convenient, the project progress is accelerated, meanwhile, four sets of supporting legs of L-shaped structures are arranged at each corner, and the supporting legs are convenient to use. The embedded part is equivalently provided with sixteen connecting points with concrete, the stress performance and stability of a concrete structure can be enhanced, the bearing capacity and shock resistance of the structure are effectively enhanced, and therefore the overall safety and durability of a building are improved, and the embedded part has high use performance.

The utility model discloses an electrical threading apparatus for building electrical construction, and relates to the technical field of building electrical construction equipment, the electrical threading apparatus comprises a steel wire harness, one end of the steel wire harness is provided with a guide assembly, and the other end of the steel wire harness is provided with a plugging assembly; the plugging assembly comprises a cylindrical shell which is fixedly connected with the end part of the steel wire harness, one end of the cylindrical shell is provided with a plurality of coils, the coils extend into the cylindrical shell, and the coils are fixedly connected with a plurality of elastic clamping plates which are arranged in the cylindrical shell. According to the electrical threading apparatus for building electrical construction, a cable is inserted from a coil, a knob is operated, a worm is driven to rotate, a worm gear, a rotating shaft and a threaded rod are further driven to rotate, a connecting plate slides along a guide rod, a conical ring sleeve is driven to push an elastic clamping plate, the elastic clamping plate more tightly clamps the cable, and the cable is prevented from falling off in the threading process; and the operation does not need to bend the cable, so that the threading task can be completed more conveniently and efficiently.

The utility model relates to a coil expanding and shaping device which comprises an expanding assembly, a shaping assembly and an end extrusion assembly, the expanding assembly comprises an expanding driving piece and an expanding block, and the expanding driving piece moves axially to enable the expanding block to move outwards in the radial direction to expand a coil; the shaping assembly comprises a shaping driving piece and a shaping sleeve, the shaping sleeve is arranged on the outer side of the expanding driving piece in a sleeving mode, the expanding block is arranged on the shaping sleeve, and axial movement of the expanding block is limited by the shaping sleeve; the end extrusion assembly comprises an extrusion driving piece and an extrusion sleeve, and the extrusion sleeve conducts extrusion positioning on the expanded coil. The shaping assembly moves to a required position, the coil is pushed out of the stator slot through the expansion assembly to avoid the stator slot without coil insertion, and then the coil pushed away by the expansion assembly is extruded and positioned through the end extrusion assembly, so that coil insertion operation can be conveniently performed on the stator slot without coil insertion subsequently. And each line inserting process can be completed in a short time with high quality, so that the labor cost is effectively reduced.

A manufacturing method for an electric rotary machine (100), comprising: a stator (40) having a stator core (41) comprising an outer core (41b) as a back yoke portion and an inner core (41a) in the form of a plurality of tooth portions (43, 243), and having a plurality of insulated and coated coils (20, 20U) each received in two slots (46) formed between the two tooth portions (43, 243) that are adjacent to each other, the coils (20, 20U) extending across the plurality of tooth portions (43, 243) of the stator core (41); and a rotor (30) rotatably supported on an inner side of the stator core (41), the manufacturing method comprising: - a winding step in which continuous intermediate coils (21), each including two slot receiving portions (20a, 20b, 20Ua, 20Ub, 21a, 21b) to be received in the slots (46) of the stator core (41), and two bridge portions (21c, 21d) by means of which both end portions of the slot receiving portions (20a, 20b, 20Ua, 20Ub, 21a, 21b) are connected, are formed in a flat plate shape from an insulated and coated conductor wire using a winding frame (60) having a winding core (61) and side plates (62a, 62b) sandwiching the winding core (61) from both surface sides thereof, and a projection (62at) defining the winding width of the bridge portions (21c, 21d) limited, is provided on the inner surfaces of the side plates (62a, 62b); - a coil forming step in which the two groove receiving portions (20a, 20b, 20Ua, 20Ub, 21a, 21b) of each intermediate coil (21) are twisted and each bridge portion (21c, 21d) is formed into a circular arc shape; - a temporary coil mounting step in which each coil (20, 20U) subjected to the coil forming step is temporarily mounted obliquely in the two grooves (46); - a coil insertion step in which the groove receiving portions (20a, 20b, 20Ua, 20Ub, 21a, 21b) of each coil (20, 20U) subjected to the temporary coil mounting step are pressed into the grooves (46) from an outer side to a radially inner side of the groove receiving portions (20a, 20b, 20Ua, 20Ub, 21a, 21b); - a core assembling step in which the inner core (41a) on which each coil (20, 20U) is mounted is inserted into the outer core (41b); and - a final assembly step in which the rotor (30) is inserted into the stator (40) and the stator (40) and the rotor (30) are received in a frame (11).

A coil insertion device includes coil diameter expanders, the coil diameter expanders being configured to insert a coil assembly in a wound state into slots of a stator core by expanding the coil assembly in diameter from inside of the stator core, each of the coil diameter expanders includes: a coil presser that is arranged inside the coil assembly and presses coil end portions of the coil assembly outward from inside to expand the coil end portions in diameter; and a restrictor that is arranged outside the coil assembly, restricts outward movement of the coil end portions expanded in diameter by the coil presser, and sandwiches the coil end portions of the coil assembly inserted in the slots with the coil presser.

The shock absorber coil insertion equipment comprises a base and a spring, a shock absorber body is placed at the top of the base, a lower circular plate is fixedly installed at the bottom end of an outer cylinder of the shock absorber body, a threaded groove is formed in the middle of the top end of a piston rod of the shock absorber body, an upper circular plate is attached to the top end of the spring, and a T-shaped hole is formed in the middle of the top of the upper circular plate. The L-shaped frame is arranged on the base, the hydraulic cylinder is installed at the bottom of the L-shaped frame, the connecting plate is installed at the bottom end of the hydraulic cylinder, the push rods are installed at the left end and the right end of the bottom of the connecting plate, the shock absorber body and the spring are assembled, then the bottom ends of the push rods abut against the upper circular plate and press the upper circular plate downwards, and therefore the shock absorber body and the spring are assembled. The spring is compressed, the labor intensity is reduced, operation is convenient, a blocking pipe is installed at the bottom of the upper circular plate, and the coil of the spring can be prevented from being clamped at the top end of the shock absorber body when the spring is compressed through the arrangement of the blocking pipe.

A probe and method for detecting cracks on the inner surface of an oblique hole in an air film of a gas turbine blade is disclosed. The detection probe comprises three coils with a centrally placed curved magnetic core, the three coils being arranged along a horizontal straight line with two detection coils on either side. The three coils are inserted into an oblique hole structure of an air film array of a gas turbine blade at the same inclination angle, a sinusoidal AC voltage signal is passed through the excitation coil to generate eddy currents in the test piece, and the magnetic lines of force are converged by the ferromagnetic properties of the centrally placed curved magnetic core to direct the magnetic field into the inner wall of the oblique hole. Due to the specific arrangement of the two detection coils, interference from the oblique hole structure can be effectively eliminated by differential detection signals. The present invention enables precise positioning of the probe relative to the array oblique hole structure, can eliminate interference signals generated by the array oblique hole structure, the centrally placed curved magnetic core can greatly improve the signal-to-noise ratio of the defect detection signal, and the multiple detection coils can effectively avoid interference from lift-off and jitter, thereby achieving high-precision detection of cracks on the inner surface of the oblique hole in the air film array of a gas turbine blade.

The present invention is to solve the problem of providing a stator assembly device that is capable of inserting a coil into a slot without biting into an installed insulating member in the slot when the coil is inserted into the slot from the inside of a stator core. To solve the above problem, the stator assembly device is provided with a leading guide member that is disposed so as to be movable in the direction of the central axis of the stator core, that by moving toward the stator core, inserts into the inside of the insulating member before the coil is inserted, in a state in which at least a portion is fitted inside the open end of the insulating member, and that is disposed in front of the moving direction of the coil that moves toward the slot. The leading guide member has a quadrilateral shape in the length direction, has a shape that is inclined with one end portion side in the radial direction of the stator core as a vertex, and is tapered toward the front end along the center line in the radial direction of the stator core, and the vertex is disposed on the radial direction outside of the stator core.

The utility model provides a segmented stator core, a coil is wound around the segmented stator core, the segmented stator core comprises a first core part comprising a first core, the first core comprises a first groove, and the first groove is a hole for the coil to insert; a second core member including a second slot, the second slot being a hole into which the coil is inserted, and the second core member including a 2-1 core and a 2-2 core disposed on both sides of the first core member; and a third core member including a third slot, the third slot being a hole into which the coil is inserted, and the third core member including a 3-1 core and a 3-2 core disposed on opposing surfaces of the 2-1 core and the 2-2 core, respectively, in which the second core member includes a cooling flow path. In the segmented stator core, the cooling performance of a coil is improved.

To securely fix a cover member covering a coil end part, while preventing or minimizing an increase in radial size of a rotary electric machine as a whole.SOLUTION: A rotary electric machine comprises: an iron core having a plurality of tooth parts; a coil wire which is wound around the iron core in such a manner that it is inserted into a slot, and which forms a coil end part on an axially outer side with respect to an axial end surface of the iron core; a first cover member which covers the coil end part from the axially outer side, a radially inner side, and a radially outer side; a second cover member which covers the axial end surface of the iron core; and a coolant space between the first cover member and the second cover member. In cross-sectional view of a plane passing through a central axis of the iron core, the first cover member and the second cover member are coupled to each other: via a first coupling part on the radially outer side of the coolant space; and via a second coupling part on the radially inner side of the coolant space. In axial view, the first coupling part and the second coupling part overlap the iron core.SELECTED DRAWING: Figure 1

The invention discloses a music massage force conduction vibrator. The vibrator is characterized in that a first step and a second step are arranged in an antimagnetic bottom shell; the two force conduction elastic sheets are respectively marked as a first elastic sheet and a second elastic sheet; the first elastic sheet and the second elastic sheet are fixedly connected with the first step and the second step respectively; an insulating part is mounted on the upper side of the second elastic sheet; the magnetic assembly comprises a magnetic conductive cup, a magnet and a magnetic conductive sheet, the magnet is installed in the magnetic conductive cup, the magnetic conductive sheet is installed on the upper end face of the magnet, and the first elastic piece and the second elastic piece are connected with the lower edge and the upper edge of the magnetic conductive cup respectively; the antimagnetic bottom shell is provided with an upper cover, the upper cover is connected with a support provided with a coil, and the coil is inserted into a gap between the magnet and the magnetic cup; one elastic assembly is arranged between the upper cover and the magnetic conductive sheet, and the other elastic assembly is arranged between the magnetic conductive cup and the antimagnetic bottom shell. Better concentric and axial built-in vibration is realized, the influence of external pressure is avoided, and dual experience of hearing and somatosensory is provided for a user.