1. A seat steering device of a high-speed bullet train is characterized by comprising a first magnetic unit and a second magnetic unit which are fixedly arranged, wherein the direction of a magnetic pole of the first magnetic unit is opposite to that of a magnetic pole of the second magnetic unit, a movable third magnetic unit with a changeable direction of the magnetic pole is arranged between the first magnetic unit and the second magnetic unit, and the third magnetic unit is connected with a rotating shaft of a seat through a transmission mechanism.

2. The seat steering device for high-speed motor cars of claim 1, wherein the first magnetic unit and the second magnetic unit are electromagnets, the first magnetic unit and the second magnetic unit are oppositely arranged, and the magnetic pole of the end of the first magnetic unit close to the second magnetic unit is the same as the magnetic pole of the end of the second magnetic unit close to the first magnetic unit.

3. The high-speed motor car seat steering device according to claim 2, wherein the first magnetic unit and the second magnetic unit are the same in size, the number of turns of the first magnetic unit coil is the same as that of the second magnetic unit coil, and the first magnetic unit and the second magnetic unit are coaxially arranged.

4. A high-speed motor car seat steering device according to claim 2, wherein the winding direction of the first magnetic unit coil is the same as the winding direction of the second magnetic unit coil, and the current direction of the first magnetic unit coil is opposite to the current direction of the second magnetic unit coil; or the winding direction of the first magnetic unit coil is opposite to that of the second magnetic unit coil, and the current direction of the first magnetic unit coil is the same as that of the second magnetic unit coil.

5. The high-speed motor car seat steering device according to claim 3, wherein the third magnetic unit is an elongated electromagnet, the third magnetic unit has the same size as the first magnetic unit, the third magnetic unit is coaxially arranged with the first magnetic unit, and the moving direction of the third magnetic unit is the axial direction.

6. The high-speed motor car seat steering device is characterized by comprising an elongated limiting electromagnet, wherein the axis of the limiting electromagnet is perpendicular to the axis of the third magnetic unit, and the limiting electromagnet can move along the axis of the limiting electromagnet.

7. A high speed motor car seat steering device according to claim 6, wherein the distance between the limiting electromagnet and the first magnet unit on the first magnet unit axis is equal to the length of the third magnet unit on the third magnet unit axis, and the distance between the limiting electromagnet and the second magnet unit on the second magnet unit axis is equal to the length of the third magnet unit on the third magnet unit axis.

8. The high-speed motor car seat steering device according to claim 6, wherein one end of the limiting electromagnet, which is far away from the third magnetic unit in the axial direction, is connected with the metal plate through a spring, and the distance between the metal plate and the third magnetic unit in the axial direction of the limiting electromagnet is greater than the length of the limiting electromagnet in the axial direction.

9. The high-speed motor car seat steering device according to claim 1, wherein the first magnetic unit and the second magnetic unit are permanent magnets.

10. A high-speed motor vehicle seat steering device according to any one of claims 1 to 9, wherein the transmission mechanism comprises a rack and a pinion engaged with the rack, the rack is fixed to the third magnetic unit, and the center of the pinion is connected to the rotating shaft of the seat.

Background

High-speed motor train units usually run back and forth between two stations, and the running direction changes. In order to ensure that the passenger riding direction is consistent with the driving direction of the motor car, the direction of the seat on the motor car needs to be adjusted.

One of the existing Chinese patents discloses an electric rotary seat frame, which comprises a mounting frame and a seat mounting frame arranged on the mounting frame, wherein the seat mounting frame is rotatably arranged on the mounting frame and comprises a rotating frame and a rotating arm fixedly connected with the rotating frame, and the rotating frame is bilaterally symmetrical about the rotating arm; a central rotating shaft is longitudinally and fixedly arranged in the middle of the mounting frame through a positioning bearing, and the rotating arm is fixedly arranged on the central rotating shaft, so that the rotating frame can rotate by 180 degrees in the forward or reverse direction; a driven gear disc is arranged on the central rotating shaft, a main control motor is arranged on the mounting frame, and a driving gear meshed with the driven gear disc is arranged on the main control motor; the left end and the right end of the rotating frame are respectively provided with a positioning beam, the positioning beams are provided with positioning parts, the right side of the mounting frame is correspondingly provided with a mechanical locking assembly, and when the rotating frame is in a forward direction or a reverse direction, the positioning parts arranged on the positioning beams at the end parts of the rotating frame are clamped with the mechanical locking assembly.

In the conventional seat steering apparatus, the seat is rotated by a motor, and a motor is required to be provided below each row of seats. The cost is high due to the fact that the number of seats on the train is large.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a high-speed motor car seat steering device, which can quickly complete the steering of a high-speed motor car seat and reduce the manufacturing cost of the seat steering device.

In order to solve the technical problems, the invention adopts the technical scheme that:

a high-speed bullet train seat steering device comprises a first magnetic unit and a second magnetic unit which are fixedly arranged, wherein the magnetic pole direction of the first magnetic unit is opposite to that of the second magnetic unit, a movable third magnetic unit with a changeable magnetic pole direction is arranged between the first magnetic unit and the second magnetic unit, and the third magnetic unit is connected with a rotating shaft of a seat through a transmission mechanism.

Preferably, the first magnetic unit and the second magnetic unit are strip-shaped electromagnets, the first magnetic unit and the second magnetic unit are arranged oppositely, and the polarity of one end of the first magnetic unit close to the second magnetic unit is the same as the polarity of one end of the second magnetic unit close to the first magnetic unit.

Preferably, the first magnetic unit and the second magnetic unit have the same size, the number of turns of the first magnetic unit coil is the same as that of the second magnetic unit coil, and the first magnetic unit and the second magnetic unit are coaxially arranged.

Preferably, the winding direction of the first magnetic unit coil is the same as the winding direction of the second magnetic unit coil, and the current direction of the first magnetic unit coil is opposite to the current direction of the second magnetic unit coil; or the winding direction of the first magnetic unit coil is opposite to that of the second magnetic unit coil, and the current direction of the first magnetic unit coil is the same as that of the second magnetic unit coil.

Preferably, the third magnetic unit is an elongated electromagnet, the third magnetic unit has the same size as the first magnetic unit, the third magnetic unit and the first magnetic unit are coaxially arranged, and the moving direction of the third magnetic unit is the axial direction.

Preferably, the limiting electromagnet comprises a long strip-shaped limiting electromagnet, the axis of the limiting electromagnet is perpendicular to the axis of the third magnetic unit, and the limiting electromagnet can move along the axis of the limiting electromagnet.

Preferably, the distance between the limiting electromagnet and the first magnetic unit on the axis of the first magnetic unit is equal to the length of the third magnetic unit on the axis of the third magnetic unit, and the distance between the limiting electromagnet and the second magnetic unit on the axis of the second magnetic unit is equal to the length of the third magnetic unit on the axis of the third magnetic unit.

Preferably, the limiting electromagnet is connected with the metal plate through a spring at one end far away from the third magnetic unit along the axial direction, and the distance between the metal plate and the third magnetic unit along the axial direction of the limiting electromagnet is greater than the length of the limiting electromagnet along the axial direction.

Preferably, the first magnetic unit and the second magnetic unit are permanent magnets.

Preferably, the transmission mechanism comprises a rack and a gear engaged with the rack, the rack is fixed on the third magnetic unit, and the center of the gear is connected with the rotating shaft of the seat.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

according to the motor train unit seat direction adjusting device, the magnetic pole direction of the third magnetic unit is changed, attractive force or repulsive force is generated between the third magnetic unit and the first magnetic unit and between the third magnetic unit and the second magnetic unit, the third magnetic unit can move back and forth between the first magnetic unit and the second magnetic unit, the seat is driven to rotate through the transmission mechanism, the adjustment of the motor train unit seat direction can be rapidly completed, a large amount of manpower resources are saved, the operation is simple and reliable, and the cost of the seat steering device is reduced.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic view of a seat steering apparatus for a high speed motor vehicle according to the present invention;

FIG. 2 is a schematic diagram of a control circuit of the seat steering apparatus for a high speed motor car according to the present invention;

FIG. 3 is a schematic diagram of the time-limited power-on device of the present invention;

FIG. 4 is a schematic view of the connection of the seat to the steering apparatus of the high speed motor car of the present invention.

In the figure: 1. a seat; 2. a gear; 3. a rack; 41. a first magnetic unit; 42. a second magnetic unit; 5. a third magnetic unit; 6. a limiting electromagnet; 71. a first resistor; 72. a second resistor; 8. a control switch; 9. a first power supply; 10. a time-limited power-on device; 111. a first field effect transistor; 112. a second field effect transistor; 113. a third field effect transistor; 114. a fourth field effect transistor; 12. a second power supply; 131. a first capacitor; 132. a second capacitor; 133. a third capacitor; 14. and a diode.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in FIG. 1, the embodiment of the invention introduces a high-speed motor car seat steering device, which comprises a first magnetic unit 41 and a second magnetic unit 42 which are fixedly arranged, wherein the magnetic pole direction of the first magnetic unit 41 is opposite to the magnetic pole direction of the second magnetic unit 42, a movable third magnetic unit 5 with a changeable magnetic pole direction is arranged between the first magnetic unit 41 and the second magnetic unit 42, and the third magnetic unit 5 is connected with a rotating shaft of a seat 1 through a transmission mechanism.

The magnetic pole direction of the first magnetic unit 41 and the magnetic pole direction of the second magnetic unit 42 are fixed, and the magnetic pole direction of the third magnetic unit 5 is variable. When the magnetic pole direction of the first magnetic unit 41 is the same as the magnetic pole direction of the third magnetic unit 5, an attractive force is generated between the first magnetic unit 41 and the third magnetic unit 5, meanwhile, the magnetic pole direction of the third magnetic unit 5 is opposite to the magnetic pole direction of the second magnetic unit 42, a repulsive force is generated between the third magnetic unit 5 and the second magnetic unit 42, the third magnetic unit 5 moves towards the first magnetic unit 41, and the third magnetic unit 5 moves and drives the seat 1 to rotate through the transmission mechanism.

When the magnetic pole direction of the first magnetic unit 41 is opposite to the magnetic pole direction of the third magnetic unit 5, a repulsive force is generated between the first magnetic unit 41 and the third magnetic unit 5, meanwhile, the magnetic pole direction of the third magnetic unit 5 is the same as the magnetic pole direction of the second magnetic unit 42, an attractive force is generated between the third magnetic unit 5 and the second magnetic unit 42, the third magnetic unit 5 moves towards the second magnetic unit 42, and the seat 1 is driven to rotate by the transmission mechanism while the third magnetic unit 5 moves.

According to the invention, the magnetic pole direction of the third magnetic unit 5 is changeable, so that the third magnetic unit 5 can move back and forth between the first magnetic unit 41 and the second magnetic unit 42, the seat 1 is driven to rotate through the transmission mechanism, the seat 1 rotates in different directions, the adjustment of the direction of the seat 1 of the motor train unit can be rapidly completed, a large amount of manpower resources are saved, and the cost of the steering device is reduced.

As shown in fig. 1 and 4, the steering mechanism includes a rack 3 fixed to the third magnet unit 5 and a pinion 2 engaged with the rack 3, and the center of the pinion 2 is connected to the rotation shaft of the seat 1. The third magnetic unit 5 drives the rack 3 to move when moving, simultaneously rotates the gear 2 meshed with the rack 3, and drives the seat 1 to rotate through the rotating shaft connected with the seat 1, so that the seat 1 is turned. The steering mechanism has the advantages of simple structure, easy realization, low manufacturing cost and the like.

In the embodiment of the present invention, the first magnetic unit 41, the second magnetic unit 42, and the third magnetic unit 5 are all elongated electromagnets, the first magnetic unit 41, the second magnetic unit 42, and the third magnetic unit 5 are all connected to the control circuit, the current directions of the first magnetic unit 41 and the second magnetic unit 42 are kept unchanged, and the current direction of the third magnetic unit 5 can be changed by the control circuit, so as to change the magnetic pole direction of the third magnetic unit 5.

As shown in fig. 1, in the embodiment of the present invention, the current direction of the third magnetic unit 5 is changed by the control circuit, so as to change the magnetic pole direction of the third magnetic unit 5. The control circuit comprises a main circuit connected with the third magnetic unit 5 coil, the main circuit comprises a first branch and a second branch, the first branch and the second branch are respectively connected with the electromagnet coil and form closed loops with different current directions, the control circuit further comprises an on-off control circuit used for controlling the on-off of the first branch and the second branch, and the on-off control circuit is connected with the first branch and the second branch.

The current direction of the third magnetic unit 5 is controlled by the control circuit, a first branch and a second branch are arranged in the control circuit, the first branch is connected with the third magnetic unit 5 to form a first closed loop, the second branch is connected with the third magnetic unit 5 to form a second closed loop, and the current direction of the third magnetic unit 5 in the first closed loop is different from the current direction of the third magnetic unit 5 in the second closed loop. The on-off of the first branch and the second branch is controlled through the on-off control circuit, the magnetic pole direction of the third magnetic unit 5 is changed, the third magnetic unit 5 can move back and forth between the first magnetic unit 41 and the second magnetic unit 42, the seat 1 rotates in different directions, the adjustment of the direction of the seat 1 of the motor train unit can be rapidly completed, a large amount of manpower resources are saved, and the cost of the seat steering device is reduced.

As shown in fig. 1, in the embodiment of the present invention, the first branch includes a first power supply 9, a positive electrode of the first power supply 9 is connected to a first end of a control switch 8, a second end of the control switch 8 is connected to a drain of a first fet 111, a source of the first fet 111 is connected to a first end of a coil of the third magnetic unit 5, a second end of the coil of the third magnetic unit 5 is connected to a drain of a third fet 113, and a source of the third fet 113 is connected to a negative electrode of the first power supply 9.

The second branch comprises a second field effect transistor 112 and a fourth field effect transistor 114, the second end of the control switch 8 is connected to the drain of the second field effect transistor 112, the source of the second field effect transistor 112 is connected to the second end of the coil of the third magnetic unit 5, the first end of the coil of the third magnetic unit 5 is connected to the drain of the fourth field effect transistor 114, and the source of the fourth field effect transistor 114 is connected to the negative electrode of the first power supply 9.

The first magnetic unit 41 and the second magnetic unit 42 are connected to the main circuit, and the first power supply 9 simultaneously supplies power to the first magnetic unit 41 and the second magnetic unit 42.

After the control switch 8 is closed, the end of the first magnetic unit 41 facing the third magnetic unit 5 is N-pole, and the end of the second magnetic unit 42 facing the third magnetic unit 5 is N-pole. When the first branch is turned on, the end of the third magnetic unit 5 facing the second magnetic unit 42 is N-pole, an attractive force is generated between the third magnetic unit 5 and the first magnetic unit 41, a repulsive force is generated between the third magnetic unit 5 and the second magnetic unit 42, and the third magnetic unit 5 moves toward the first magnetic unit 41. When the second branch is turned on, the end of the third magnetic unit 5 facing the first magnetic singler 42 is N-pole, a repulsive force is generated between the third magnetic unit 5 and the first magnetic unit 41, an attractive force is generated between the third magnetic unit 5 and the second magnetic unit 42, and the third magnetic unit 5 moves toward the second magnetic unit 41.

As shown in fig. 2, in the embodiment of the present invention, the on-off control circuit includes a second power supply 12, a positive electrode of the second power supply 12 is connected to the conductive connector, a negative electrode of the second power supply 12 is connected to a first end of a first capacitor 131, a second end of the first capacitor 131 is connected to the first conductive interface, a second end of the first capacitor 131 is connected to a gate of the second fet 112 and a gate of the fourth fet 114, and a source of the second fet 112 and a source of the fourth fet 114 are connected to the negative electrode of the second power supply 12.

The cathode of the second power source 12 is connected to the first end of the second capacitor 132, the second end of the second capacitor 132 is connected to the second conductive interface, the second end of the second capacitor 132 is connected to the gate of the first fet 111 and the gate of the third fet 113, and the source of the first fet 111 and the source of the third fet 113 are connected to the cathode of the second power source 12.

The conductive connector is disposed on the third magnetic unit 5, the first conductive interface is disposed on the first magnetic unit 41, the second conductive interface is disposed on the second magnetic unit 42, and during the movement of the third magnetic unit 5, the conductive connector can be respectively conducted with the first conductive interface and the second conductive interface.

When the seat 1 rotates forward, the first magnetic unit 41 is attached to the third magnetic unit 5, the conductive connector is connected to the first conductive interface, and the control switch 8 is in an off state. The second power source 12 charges the first capacitor 131, and the gate voltage of the second fet 112 and the gate voltage of the fourth fet 114 reach the turn-on threshold. After the control switch 8 is closed, the second fet 112 and the fourth fet 114 are switched on, the second branch is switched on, and the third magnetic unit 5 moves toward the second magnetic unit 42. During the process of moving the third magnetic unit 5 toward the second magnetic unit 42, the first capacitor 131 provides a turn-on voltage to the second fet 112 and the fourth fet 114, so that the second fet 112 and the fourth fet 114 are turned on. After the third magnet unit 5 moves to the second magnet unit 42, the seat 1 is turned over, and the control switch 8 is turned off.

After the seat 1 is turned, the third magnetic unit 5 moves to the second magnetic unit 42, the conductive connector is connected to the second conductive interface, and the control switch 8 is in an off state. The second power supply 12 charges the second capacitor 132, and the gate voltage of the first fet 111 and the gate voltage of the third fet 113 reach the turn-on threshold. After the control switch 8 is closed, the first fet 111 and the third fet 113 are turned on, the first branch is turned on, and the third magnetic unit 5 moves toward the first magnetic unit 41. During the process of moving the third magnetic unit 5 toward the first magnetic unit 41, the second capacitor 132 provides the turn-on voltage to the first fet 111 and the third fet 113, so that the first fet 111 and the third fet 113 are turned on. After the third magnet unit 5 moves to the first magnet unit 41, the seat 1 is turned over, and the control switch 8 is turned off.

According to the invention, the second power supply 12 is used for charging the first capacitor 131 and the second capacitor 132 when the seat 1 does not need to be turned, the first capacitor 131 is used for providing the starting voltage for the second field effect transistor 112 and the fourth field effect transistor 114 when the seat 1 needs to be turned, and the second capacitor 132 is used for providing the starting voltage for the first field effect transistor 111 and the third field effect transistor 113, so that the current direction of the third magnetic unit 5 can be changed at will, the third magnetic unit 5 can move back and forth between the first magnetic unit 41 and the second magnetic unit 42, and the seat 1 can rotate in different directions.

As shown in fig. 1, the embodiment of the present invention includes a time-limited power-on device 10 that can be automatically turned off or turned on, a first end of the time-limited power-on device 10 is connected to a second end of the control switch 8 through the limit electromagnet 6, and a second end of the time-limited power-on device 10 is connected to a negative pole of the first power supply 9.

As shown in fig. 3, the time-limited energizing device 10 includes a diode 14 and a resistance-capacitance circuit, wherein the anode of the diode 14 is connected with the limit electromagnet 6, and the cathode of the diode 14 is connected to the cathode of the first power supply 9 through the resistance-capacitance circuit.

The RC circuit comprises a first resistor 71, a second resistor 72 and a third capacitor 133, wherein a first end of the first resistor 71 is connected with the cathode of the diode 14, a second end of the first resistor 71 is grounded through the second resistor 72, a second end of the first resistor 71 is connected with a first end of the third capacitor 133, and a second end of the third capacitor 133 is connected to the cathode of the first power supply 9.

The first magnetic unit 41, the second magnetic unit 42 and the third magnetic unit 5 are all elongated electromagnets, the first magnetic unit 41, the second magnetic unit 42 and the third magnetic unit 5 are the same in size, and the first magnetic unit 41, the second magnetic unit 42 and the third magnetic unit 5 are horizontally and coaxially arranged. The limiting electromagnet 6 is also a horizontally arranged elongated electromagnet, and the axis of the limiting electromagnet 6 is perpendicular to the axis of the third magnetic unit 5. The distance between the limiting electromagnet 6 and the first magnetic unit 41 is equal to the length of the third magnetic unit 5, and the distance between the limiting electromagnet 6 and the second magnetic unit 42 is equal to the length of the third magnetic unit 5. One end of the limiting electromagnet 6 is connected with the metal plate through a spring, when the seat 1 is not turned, the limiting electromagnet 6 is attached to one end of the third magnetic unit 5, the resistance value of the third magnetic unit 5 moves, and the direction of the seat 1 is kept unchanged.

After the control switch 8 is closed, the limiting electromagnet 6 is powered on, attraction force is generated between the limiting electromagnet 6 and the metal plate, the limiting electromagnet 6 compresses the spring and moves towards the metal plate, and the limiting electromagnet 6 cannot continuously prevent the third magnetic unit 5 from moving. The power-on time of the time-limited power-on device 10 is less than the moving time of the third magnetic unit 5, after the third magnetic unit 5 is moved, the attraction between the limiting electromagnet 6 and the metal plate disappears, and the limiting electromagnet 6 is reset under the action of the spring elasticity to prevent the third magnetic unit 5 from moving continuously.

After the control switch 8 is closed, the voltage of the positive electrode of the diode 14 is greater than the voltage of the negative electrode of the diode 14, the first power supply 9 charges the third capacitor 133 in the time-limited electrifying device 10, the time-limited electrifying device 10 is switched on, attraction force is generated between the limiting electromagnet 6 and the metal plate, and the limiting electromagnet 6 compresses the spring and moves towards the metal plate. After the third capacitor 133 is charged for a period of time, the voltage of the cathode of the diode 14 is greater than the voltage of the anode of the diode 14, the diode 14 is turned off, the time-limited power-on device 10 is powered off, the attraction force between the limiting electromagnet 6 and the metal plate disappears, and the limiting electromagnet 6 returns to the original position under the action of the spring force.

According to the invention, the limiting electromagnet 6 is arranged, so that when the seat 1 does not need to be turned, the limiting electromagnet 6 prevents the third magnetic unit 5 from moving, and the direction of the seat 1 is kept unchanged. When the seat 1 needs to be turned, the limiting electromagnet 6 is electrified to compress the spring and move towards the metal plate, the third magnetic unit 5 is made to move and drive the seat 1 to turn, the electrifying time of the time-limited electrifying device 10 is shorter than the moving time of the third magnetic unit 5, after the third magnetic unit 5 is moved, the time-limited electrifying device 10 is powered off, the limiting electromagnet 6 is restored to the original position under the action of the elastic force of the spring to prevent the third magnetic unit 5 from continuously moving, and the direction of the seat 1 is kept.

As shown in fig. 1, in the embodiment of the present invention, the first magnetic unit 41 and the second magnetic unit 42 are strip-shaped electromagnets, the first magnetic unit 41 and the second magnetic unit 42 are disposed opposite to each other, and the magnetic pole of the first magnetic unit 41 near the end of the second magnetic unit 42 is the same as the magnetic pole of the second magnetic unit 42 near the end of the first magnetic unit 41.

The first magnetic unit 41 and the second magnetic unit 42 have the same size, the number of turns of the coil of the first magnetic unit 41 is the same as that of the coil of the second magnetic unit 42, and the first magnetic unit 41 and the second magnetic unit 42 are coaxially disposed.

The first magnet unit 41 and the second magnet unit 42 have the same magnetic field strength when energized, and the third magnet unit 5 can rotate at the same rotational speed when rotating in different directions, thereby improving the stability of the steering apparatus.

As shown in fig. 1, in the embodiment of the present invention, the winding direction of the coil of the first magnetic unit 41 is the same as the winding direction of the coil of the second magnetic unit 42, and the current direction of the coil of the first magnetic unit 41 is opposite to the current direction of the coil of the second magnetic unit 42; or the winding direction of the coil of the first magnetic unit 41 is opposite to that of the coil of the second magnetic unit 42, and the current direction of the coil of the first magnetic unit 41 is the same as that of the coil of the second magnetic unit 42.

As shown in fig. 1, in the embodiment of the present invention, the third magnetic unit 5 is an elongated electromagnet, the third magnetic unit 5 and the first magnetic unit 41 have the same size, the third magnetic unit 5 and the first magnetic unit are coaxially disposed, and the moving direction of the third magnetic unit 5 is an axial direction.

The third magnetic unit 5 can move back and forth between the first magnetic unit 41 and the second magnetic unit 42 in the electrified state by making the magnetic pole directions of the first magnetic unit 41 and the second magnetic unit 42 different, thereby realizing the steering of the seat 1.

As shown in fig. 1, the embodiment of the present invention includes an elongated limiting electromagnet 6, an axis of the limiting electromagnet 6 is perpendicular to an axis of the third magnetic unit 5, and the limiting electromagnet 6 is movable along the axis of the limiting electromagnet 6. The distance between the limiting electromagnet 6 and the first magnetic unit 41 on the axis of the first magnetic unit 41 is equal to the length of the third magnetic unit 5 on the axis of the third magnetic unit 5, and the distance between the limiting electromagnet 6 and the second magnetic unit 42 on the axis of the second magnetic unit 42 is equal to the length of the third magnetic unit 5 on the axis of the third magnetic unit 5.

Before the control switch 8 is turned on, the third magnet unit 5 is caught between the first magnet unit 41 and the limit electromagnet 6, and the limit electromagnet 6 prevents the third magnet unit 5 from moving toward the second magnet unit 42 side. After the control switch 8 is turned on, the limiting electromagnet 6 moves along the axis of the limiting electromagnet 6, the third magnetic unit 5 moves towards one side of the second magnetic unit 42 under the action of attractive force and repulsive force, after the third magnetic unit 5 moves to be attached to the second magnetic unit 42, the limiting electromagnet 6 resets, the limiting electromagnet 6 abuts against the third magnetic unit 5, and the third magnetic unit 5 is prevented from continuously moving after the control switch 8 is turned off.

According to the invention, the movable limiting electromagnet 6 is arranged, so that the limiting electromagnet 6 is far away from the magnetic unit when the third magnetic unit 5 moves, the situation that the third magnetic unit 5 is blocked is avoided, and the seat 1 is driven to rotate by the movement of the third magnetic unit 5. After the seat 1 turns to, the limiting electromagnet 6 resets, and the limiting electromagnet 6 prevents the third magnetic unit 5 from continuously moving, so that the seat 1 is prevented from continuously rotating.

The end, far away from the third magnetic unit 5, of the limiting electromagnet 6 in the axis direction is connected with a metal plate through a spring, and the distance between the metal plate and the third magnetic unit 5 in the axial direction of the limiting electromagnet 6 is larger than the length of the limiting electromagnet 6 in the axis direction.

After the control switch 8 is closed, the limiting electromagnet 6 is electrified, attraction force is generated between the limiting electromagnet 6 and the metal plate, the limiting electromagnet 6 compresses the spring to move towards the metal plate under the action of the attraction force, and the limiting electromagnet 6 stops moving after the attraction force between the limiting electromagnet 6 and the metal plate and the elastic force of the spring reach balance. The third magnetic unit 5 moves towards one side of the second magnetic unit 42, after the third magnetic unit 5 moves, the limiting electromagnet 6 is powered off, the attraction between the limiting electromagnet 6 and the metal plate disappears, the limiting electromagnet 6 resets under the action of the spring elasticity, the third magnetic unit 5 is clamped between the limiting electromagnet 6 and the second magnetic unit 42, and the third magnetic unit 5 is prevented from moving continuously.

In the embodiment of the present invention, the first magnetic unit 41 and the second magnetic unit 42 are permanent magnets, the third magnetic unit 5 is an electromagnet, and the direction of the electrode of the third magnetic unit 5 is changed by a control circuit.

According to the invention, the first magnetic unit 41 and the second magnetic unit 42 are set as permanent magnets, so that the first power supply 9 is not needed to supply power to the first magnetic unit 41 and the second magnetic unit 42 when the seat 1 is turned, the service life of the first power supply 9 is prolonged, and the cruising effect of the turning device is enhanced.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.

The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.