Linear motors, suspension systems and vehicles

Abstract

The present invention discloses a linear motor, a suspension system and a vehicle, wherein the linear motor comprises: a housing, a cavity is provided in the housing, the cavity has a first side wall and a second side wall; a substrate, at least a part of the substrate is located in the cavity, and has a third side wall and a fourth side wall; wherein the substrate and the housing move relative to each other in a first direction, the substrate and the housing move relative to each other in the first direction, the first side wall and the third side wall are arranged at a relative interval, and one of the first side wall and the third side wall is provided with a coil winding, and the other is provided with a permanent magnet; the second side wall and the fourth side wall are arranged at a relative interval, and one of the second side wall and the fourth side wall is provided with a coil winding, and the other is provided with a permanent magnet. The linear motor according to the embodiment of the present invention can generate a large damping force, and has the advantages of reducing the vibration amplitude of the wheel and improving the damping effect on the wheel.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a linear motor, a suspension system and a vehicle. Background Art

[0002] In order to reduce the vibration amplitude of the wheels and improve the comfort of the driver and passengers, a linear motor is installed on the vehicle. The linear motor can generate a damping force on the wheels to reduce the vibration amplitude of the wheels, but the vibration reduction effect of the linear motor is not good. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a linear motor for a vehicle, which can generate a large damping force, has the advantages of reducing the vibration amplitude of the wheel, improving the damping effect on the wheel, etc.

[0004] The present invention also provides a suspension system and a vehicle having the linear motor.

[0005] A linear motor for a vehicle according to an embodiment of a first aspect of the present invention comprises: a cavity is provided in the housing, the cavity has a first side wall and a second side wall;

[0006] a substrate, at least a portion of which is located in the cavity, and the substrate has a third sidewall and a fourth sidewall;

[0007] Wherein, the substrate and the housing move relative to each other in a first direction, the first side wall and the third side wall are arranged relatively spaced apart, and a coil winding is arranged on one of the first side wall and the third side wall, and a permanent magnet is arranged on the other side;

[0008] The second side wall and the fourth side wall are arranged opposite to each other with a spacing therebetween, and a coil winding is arranged on one of the second side wall and the fourth side wall, and a permanent magnet is arranged on the other of the second side wall and the fourth side wall.

[0009] The linear motor according to the embodiment of the present invention can generate a relatively large damping force, and has the advantages of reducing the vibration amplitude of the wheel, improving the damping effect on the wheel, etc.

[0010] In addition, the linear motor according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to some embodiments of the present invention, the permanent magnet is fixed to both the third side wall and the fourth side wall, and the coil winding is fixed to the first side wall and the second side wall.

[0012] According to some embodiments of the present invention, the first side wall and the second side wall are arranged relatively parallel to each other, and the third side wall and the fourth side wall are arranged relatively parallel to each other.

[0013] According to some embodiments of the present invention, the linear motor further comprises a guide assembly, wherein the guide assembly cooperates with the housing and the base plate respectively to guide the moving direction.

[0014] According to some embodiments of the present invention, the guide assembly is located between the base plate and the housing.

[0015] According to some embodiments of the present invention, the guide assembly includes a first guide member and a second guide member, the first guide member is arranged on the inner wall of the shell, the second guide member is arranged on the substrate, and the first guide member and the second guide member are plug-fitted and slide relative to each other.

[0016] According to some embodiments of the present invention, the first guide member is provided with a slide groove extending along the first direction, a portion of the second guide member extends into the slide groove, at least one side wall of the slide groove is provided with a matching protrusion, and the second guide member is provided with a matching groove, and the matching protrusion extends into the matching groove.

[0017] According to some embodiments of the present invention, a plurality of first guide members are provided, and the plurality of first guide members are arranged at intervals in the first direction, and the second guide member is slidably matched with the plurality of first guide members.

[0018] According to some embodiments of the present invention, the guide assembly is provided in plurality, and at least two of the guide assemblies are arranged opposite to each other.

[0019] According to some embodiments of the present invention, the substrate has a fifth side wall and a sixth side wall disposed opposite to each other, the cavity has a seventh side wall and an eighth side wall disposed opposite to each other, the fifth side wall is disposed opposite to the seventh side wall, and at least one guide component is disposed between the fifth side wall and the seventh side wall;

[0020] The sixth side wall is arranged opposite to the eighth side wall, and at least one guide component is arranged between the sixth side wall and the eighth side wall.

[0021] According to some embodiments of the present invention, the fifth side wall is arranged at an angle to the third side wall and the fourth side wall, and the seventh side wall is arranged at an angle to the first side wall and the second side wall.

[0022] According to some embodiments of the present invention, an included angle between the fifth side wall and the third side wall and the fourth side wall is 90 degrees, and an included angle between the seventh side wall and the first side wall and the second side wall is 90 degrees.

[0023] According to a second aspect of the present invention, a suspension system is provided, the suspension system comprising the linear motor according to the first aspect of the present invention, the housing being suitable for connection with a vehicle body, and the side of the substrate extending out of the cavity being suitable for connection with a wheel.

[0024] The suspension system according to the embodiment of the present invention can generate a larger damping force by utilizing the linear motor according to the embodiment of the first aspect of the present invention, and has the advantages of reducing the vibration amplitude of the wheel, improving the damping effect on the wheel, etc.

[0025] According to a third aspect of the present invention, a vehicle is provided. The vehicle comprises the suspension system according to the embodiment of the second aspect of the present invention.

[0026] The vehicle according to the embodiment of the present invention can generate a larger damping force by utilizing the suspension system according to the embodiment of the second aspect of the present invention, and has the advantages of reducing the vibration amplitude of the wheel and improving the damping effect on the wheel.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 is a schematic structural diagram of a linear motor according to an embodiment of the present invention.

[0030] Figure 2 Schematic diagram of a partial structure of a linear motor according to an embodiment of the present invention.

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0032] Figure 4 yes Figure 2 Rear view of.

[0033] Figure 5 yes Figure 2 Top view of the .

[0034] Figure 6 Schematic diagram of the structure of a linear motor and a wheel according to an embodiment of the present invention.

[0035] Reference numerals: linear motor 1,

[0036] Housing 10, first fixing hole 111, second fixing hole 112,

[0037] Base plate 21, steering knuckle connecting piece 22,

[0038] Permanent magnet 30,

[0039] The first permanent magnet 31, the second permanent magnet 32,

[0040] Coil winding 40,

[0041] The first coil winding 41, the second coil winding 42,

[0042] The first guide member 51, the slide groove 511, the matching protrusion 512,

[0043] The second guide member 52 cooperates with the groove 522.

[0044] Wheel 6. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0046] A linear motor 1 for a vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0047] like Figure 1-Figure 6 As shown, the linear motor 1 according to the embodiment of the present invention includes a housing 10 and a substrate 21 .

[0048] A cavity is provided in the shell 10, and the cavity has a first side wall and a second side wall. At least a portion of the substrate 21 is located in the cavity so that the shell 10 can be used to protect the substrate 21. The substrate 21 has a third side wall and a fourth side wall, wherein the substrate 21 and the shell 10 move relative to each other in a first direction, the first side wall and the third side wall are relatively spaced apart, and one of the first side wall and the third side wall is provided with a coil winding, and the other is provided with a permanent magnet; the second side wall and the fourth side wall are relatively spaced apart, and one of the second side wall and the fourth side wall is provided with a coil winding, and the other is provided with a permanent magnet.

[0049] In the linear motor provided by the present invention, when the coil winding is energized, the magnetic field generated by the coil winding interacts with the magnetic field generated by the permanent magnet, so that the permanent magnet and the coil winding can move relative to each other. In the linear motor of the present invention, the magnetic fields on the first side wall and the third side wall interact with each other, and the magnetic fields on the second side wall and the fourth side wall interact with each other, and the two pairs of permanent magnets and the coil winding are coupled, so that the force of the substrate relative to the shell is increased, thereby ensuring the driving force for the relative movement between the shell and the substrate. When the linear motor is applied to a vehicle, it can generate a large damping force between the vehicle body and the wheel, thereby reducing vibration and improving the damping effect.

[0050] In some embodiments, when the linear motor is applied to a vehicle, a wheel connection end is provided on the substrate 21, which is connected to the wheel 6 of the vehicle, and a body connection end is provided on the housing 10, which is connected to the body. When the wheel 6 vibrates in a first direction, the substrate 21 is driven to move relative to the housing 10 along the first direction to hinder the vibration of the wheel 6 in the first direction, thereby reducing the vibration amplitude of the wheel 6 along the first direction.

[0051] By controlling the direction of the current in the coil winding 40 , the acting force between the coil winding 40 and the permanent magnet 30 can be changed to control the direction in which the substrate 21 moves in the cavity relative to the housing 10 along the first direction.

[0052] Meanwhile, compared with using hydraulic pressure to drive the substrate 21 to move along the first direction, using the magnetic force between the coil winding 40 and the permanent magnet 30 to drive the substrate 21 to move along the first direction is simpler and can avoid oil leakage and the like.

[0053] In addition, the linear motor provided by the present invention increases the number of permanent magnets 30 and coil windings 40 in the linear motor 1, so that the linear motor of this embodiment is equivalent to including multiple linear motor components, thereby increasing the force between the permanent magnets 30 and the coil windings 40, so as to be able to stably drive the substrate 21 to move in the cavity relative to the housing 10 along the first direction, and then when the wheel connection end of the substrate 21 is connected to the wheel 6, the damping force of the substrate 21 on the wheel 6 is enhanced, so as to be able to fully reduce the vibration amplitude of the wheel 6 along the first direction. It is understandable that the first direction is the direction from the wheel to the vehicle body. It is understandable that the interaction between the corresponding permanent magnets 30 and the coil windings 40 enables them to move relatively along the first direction. This principle belongs to the working principle of the linear motor, and the present invention will not repeat it.

[0054] In some embodiments, the substrate 21 is applied to the suspension system of the vehicle, and the substrate 21 is connected to the wheel 6 of the vehicle. When the vehicle is driving, due to the unevenness of the road surface, the wheel 6 will vibrate in the up and down directions when the vehicle is driving. The linear motor 1 drives the substrate 21 to move in the up and down directions to hinder the vibration of the wheel 6 in the up and down directions, thereby reducing the amplitude of the vibration of the wheel 6 in the up and down directions, and reducing the vibration transmitted from the wheel 6 to the vehicle body, so as to improve the comfort of the drivers and passengers in the vehicle.

[0055] Among them, when the wheel 6 vibrates in the up and down directions, the force exerted on the substrate 21 is relatively large. Therefore, two permanent magnets 30 and two coil windings 40 are arranged in the linear motor 1 to increase the damping force of the substrate 21 on the wheel 6, so that the linear motor 1 can fully reduce the vibration generated by the wheel 6 in the up and down directions, so as to improve the comfort of the drivers and passengers in the vehicle.

[0056] Therefore, the linear motor 1 according to the embodiment of the present invention can generate a larger damping force, and has the advantages of reducing the vibration amplitude of the wheel 6 and improving the damping effect on the wheel 6.

[0057] A linear motor 1 for a vehicle according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0058] like Figure 1-Figure 6 As shown, the linear motor 1 according to the embodiment of the present invention includes a housing 10 and a substrate 21 .

[0059] In some embodiments of the present invention, permanent magnets 30 are fixed to the third side wall and the fourth side wall of the substrate 21, and the coil winding 40 is fixed to the first side wall and the second side wall of the outer shell 10, so as to reduce the wiring difficulty of the coil winding 40 and facilitate the power supply of the coil winding 40.

[0060] Specifically, compared to setting the coil winding 40 on the substrate 21, fixing the coil winding 40 on the first side wall and the second side wall of the outer shell 10 can prevent the coil winding 40 from moving with the substrate 21. In this way, when the coil winding 40 is powered, it is convenient to reduce the length of the power supply line, and at the same time, it can avoid pulling the power supply line and preventing the power supply line from being worn, so as to ensure that the power supply line can stably supply power to the coil winding 40, thereby improving the working stability of the linear motor 1.

[0061] In some optional embodiments of the present invention, Figure 4As shown, the third side wall and the fourth side wall of the substrate 21 are provided with the first permanent magnet 31 and the second permanent magnet 32, the first side wall and the second side wall of the cavity are provided with the first coil winding 41 and the second coil winding 42, the first permanent magnet 31 and the first coil winding 41 are arranged opposite to each other, and the second permanent magnet 32 ​​and the second coil winding 42 are arranged opposite to each other, and the force between the first coil winding 41 and the first permanent magnet 31 can be controlled by controlling the current direction in the first coil winding 41, and the force between the second coil winding and the second permanent magnet 32 ​​can be controlled by controlling the current direction in the second coil winding 42, so that the moving direction of the substrate 21 can be controlled.

[0062] That is to say, by controlling the flow direction of the current in the coil winding 40, the direction of the force between the first permanent magnet 31 and the first coil winding 41 can be controlled, and the direction of the force between the second permanent magnet 32 ​​and the second coil winding 42 can be controlled, thereby controlling the movement direction of the first permanent magnet 31 and the second permanent magnet 32, and controlling the movement direction of the substrate 21.

[0063] In addition, by controlling the magnitude of the current in the coil winding 40, the magnitude of the force between the first permanent magnet 31 and the first coil winding 41 can be controlled, and the magnitude of the force between the second permanent magnet 32 ​​and the second coil winding 42 can be controlled, so as to control the magnitude of the damping force of the substrate 21 on the wheel 6.

[0064] In some embodiments, Figure 1 As shown, the first side wall is relatively parallel to the second side wall, the third side wall is relatively parallel to the fourth side wall, and the first side wall is parallel to the third side wall, so that the forces between the two pairs of coil windings on both sides of the substrate and the permanent magnets are balanced, thereby ensuring that the force generated by the linear motor is relatively balanced.

[0065] In the second direction, a plurality of first fixing holes 111 are provided on the opposite side walls of the housing 10 , and fasteners pass through the first fixing holes 111 and cooperate with the coil winding 40 to fix the coil winding 40 in the housing 10 , and the permanent magnet 30 is fixed to the base plate 21 by the fasteners.

[0066] In some optional embodiments of the present invention, Figure 1 As shown, a knuckle connector 22 is provided at the end of the substrate 21 extending out of the housing 10, and the substrate 21 is connected to the wheel 6 via the knuckle connector 22, so that when the substrate 21 hinders the wheel 6 from vibrating in the first direction, the substrate 21 can be prevented from restricting the movement of the wheel 6 and the wheel 6 can be prevented from affecting the movement of the substrate 21.

[0067] In some embodiments, Figure 6As shown, the linear motor 1 is applied to a vehicle, and the substrate 21 is connected to the wheel 6 through the steering knuckle connector 22. The substrate 21 can move in the up and down directions, thereby reducing the amplitude generated by the wheel 6 in the up and down directions. At the same time, when the vehicle turns and the wheel 6 rotates, the steering knuckle connector can prevent the movement of the wheel 6 from affecting the substrate 21, so as to ensure that the substrate 21 can move in the first direction and ensure that the substrate 21 will not be affected by the movement of the wheel 6.

[0068] In some embodiments of the present invention, Figure 4 As shown, the linear motor 1 also includes a guide assembly, which cooperates with the housing 10 and the substrate 21 to guide the movement direction, so that the substrate 21 can move smoothly in the cavity along the first direction relative to the housing 10, thereby enabling the linear motor 1 to buffer the vibration of the wheel 6 along the first direction to reduce the amplitude of the vibration of the wheel 6 along the first direction.

[0069] In some optional embodiments of the present invention, the guide assembly is located between the substrate 21 and the housing 10 to set the guide assembly outside the permanent magnet 30 and the coil winding 40 to avoid the guide assembly affecting the interaction between the permanent magnet 30 and the coil winding 40.

[0070] like Figure 1 , Figure 4 As shown, in this embodiment, the substrate 21 and the permanent magnet 30 are spaced apart along the second direction, and the guide component is arranged on one side of the substrate 21 and the permanent magnet 30 along the third direction, and the third direction is perpendicular to the second direction, so that the guide component is arranged between the permanent magnet 30 and the shell 10, so that the guide component cooperates with the shell 10 and the substrate 21 respectively to guide the moving direction of the substrate 21 relative to the shell 10, and at the same time, the guide component can be arranged outside the permanent magnet 30 and the coil winding 40 to avoid the guide component affecting the action between the permanent magnet 30 and the coil winding 40.

[0071] In some optional embodiments of the present invention, the guide assembly includes a first guide member 51 and a second guide member 52. The first guide member 51 is arranged on the inner wall of the outer shell 10, and the second guide member 52 is arranged on the substrate 21. The first guide member 51 and the second guide member 52 are plugged into each other, and the first guide member 51 and the second guide member 52 slide relative to each other. On the one hand, they can support the position of the substrate 21 in the cavity and reduce the friction between the substrate 21 and the outer shell 10. At the same time, they can limit the moving direction of the substrate 21, so that the substrate 21 can stably move along the first direction in the cavity.

[0072] Specifically, when the substrate 21 moves along the first direction relative to the housing 10, the second guide member 52 slides relative to the first guide member 51, and the first guide member 51 can limit the sliding direction of the second guide member 52, thereby limiting the moving direction of the substrate 21 relative to the housing 10, so that the substrate 21 can move smoothly along the first direction relative to the housing 10, so that the substrate 21 can buffer the vibration of the wheel 6, and enable the linear motor 1 to achieve its vibration reduction effect.

[0073] In some specific embodiments of the present invention, Figure 4 As shown, the first guide member 51 is provided with a slide groove 511, which extends along the first direction. Part of the second guide member 52 extends into the slide groove 511, so that the slide groove 511 can be used to limit the sliding direction of the second guide member 52, so that the second guide member 52 can slide smoothly in the slide groove 511 along the first direction.

[0074] Among them, at least one side wall of the slide groove 511 is provided with a matching protrusion 512, and the second guide member 52 is provided with a matching groove 522. The matching protrusion 512 extends into the matching groove 522 to install the first guide member 51 and the second guide member 52 together. When the second guide member 52 slides in the slide groove 511, the matching protrusion 512 can slide in the matching groove 522, so as to limit the sliding direction of the second guide member 52 while avoiding the second guide member 52 from being disengaged from the first guide member 51, thereby ensuring the stability of the matching between the first guide member 51 and the second guide member 52, so that the second guide member 52 can slide smoothly relative to the first guide member 51, and the substrate 21 can move smoothly relative to the shell 10.

[0075] like Figure 3 , 4 As shown, in the present embodiment, in the second direction, both side walls of the slide groove 511 have mating protrusions 512, and both side walls of the second guide member 52 are provided with mating grooves 522, and the mating grooves 522 extend along the first direction. The mating protrusions 512 on the two side walls of the slide groove 511 correspond to the mating grooves 522 on the second guide member 52, so as to install the second guide member 52 and the first guide member 51 together, and then the sliding direction of the first guide member 51 can be restricted by utilizing the mating protrusions 512 and the mating grooves 522, so that the first guide member 51 can slide smoothly along the first direction, and the first guide member 51 and the second guide member 52 can be prevented from being out of mating.

[0076] In some specific embodiments of the present invention, Figure 2As shown, a plurality of first guide members 51 are provided, and the plurality of first guide members 51 are arranged at intervals in the first direction, and the second guide member 52 is slidably matched with the plurality of first guide members 51, so that the substrate 21 and the housing 10 are stably matched together through the first guide member 51 and the second guide member 52, so that the substrate 21 can be stably moved relative to the housing 10 along the first direction.

[0077] like Figure 2 As shown, in this embodiment, the second guide member 52 is slidably matched with the two first guide members 51, the second guide member 52 extends along the first direction, the two first guide members 51 are spaced apart along the first direction, the two first guide members 51 are both provided with a slide groove 511, and the two slide grooves 511 extend in the same direction. The second guide member 52 is slidably matched with the two first guide members 51, so that when the length of the second guide member 52 along the first direction is longer, the sliding of the second guide member 52 can be restricted and supported by the two first guide members 51 at the same time, so that the second guide member 52 can slide smoothly along the first direction, and the substrate 21 can move smoothly along the first direction.

[0078] In some optional embodiments of the present invention, Figure 4 As shown, in the third direction, guide assemblies are provided on opposite sides of the substrate 21, and the first direction, the second direction and the third direction are perpendicular to each other. The movement direction of the substrate 21 can be limited by utilizing the cooperation of the first guide member 51 and the second guide member 52. At the same time, guide assemblies are provided on opposite sides of the substrate 21 along the third direction to limit the position of the substrate 21 along the third direction, and to limit the position of the substrate 21 in the cavity along the third direction, so that the substrate 21 can move smoothly along the first direction, thereby preventing the substrate 21 from scratching the housing 10 during movement.

[0079] like Figure 4 As shown, in the present embodiment, in the third direction, first guide members 51 are provided at the relative inner walls of the shell 10, and second guide members 52 are provided at the relative wall surfaces of the substrate 21. The first guide members 51 and the second guide members 52 are correspondingly plugged into each other. When the substrate 21 moves along the first direction relative to the shell 10, the second guide member 52 can slide relative to the first guide member 51, so as to support the position of the substrate 21 in the shell 10 by using the first guide member 51 and the second guide member 52, so as to avoid direct contact between the substrate 21 and the shell 10, and further avoid mutual wear between the substrate 21 and the shell 10 when the substrate 21 moves along the first direction relative to the shell 10.

[0080] In some embodiments, a plurality of guide assemblies are provided, and at least two guide assemblies are arranged opposite to each other. Specifically, the substrate 21 has a fifth side wall and a sixth side wall arranged opposite to each other, the cavity has a seventh side wall and an eighth side wall arranged opposite to each other, the fifth side wall and the seventh side wall are arranged opposite to each other, and at least one guide assembly is arranged between the fifth side wall and the seventh side wall; the sixth side wall and the eighth side wall are arranged opposite to each other, and at least one guide assembly is arranged between the sixth side wall and the eighth side wall.

[0081] In one embodiment, the fifth side wall is arranged at an angle to the third side wall and the fourth side wall, and the seventh side wall is arranged at an angle to the first side wall and the second side wall.

[0082] In such Figure 1 In the illustrated embodiment, the angle between the fifth side wall and the third side wall and the fourth side wall is 90 degrees, and the angle between the seventh side wall and the first side wall and the second side wall is 90 degrees.

[0083] In some embodiments, Figure 1 As shown, two first guide members 51 are provided at the bottom of the cavity, and two first guide members 51 are provided at the top of the cavity. The bottom wall and the top wall of the outer shell 10 are provided with a plurality of second fixing holes 112. A plurality of fasteners can pass through the corresponding second fixing holes 112 and cooperate with the first guide members 51 to fix the first guide members 51 at the bottom and the top of the cavity. It should be understood here that the top and bottom limitations described above are only for the convenience of describing the accompanying drawings and will not limit the actual setting position and direction of the linear motor 1.

[0084] In some optional embodiments of the present invention, the linear motor 1 has a first working state and a second working state. The linear motor 1 also includes a battery, which is used to power the coil winding 40. When the linear motor 1 is needed to damp the vibration of the wheel 6 along the first direction, the linear motor 1 is in the first working state. At this time, the battery can supply power to the coil winding 40 to generate an attractive force or a repulsive force between the coil winding 40 and the permanent magnet 30, thereby driving the substrate 21 to move along the first direction to hinder the vibration of the wheel 6.

[0085] When there is no need to reduce vibration of the wheel 6, for example, when the vibration amplitude of the wheel 6 is too large and the linear motor 1 cannot reduce vibration of the wheel 6, the linear motor 1 is in the second working state, and the battery stops supplying power. When the wheel 6 drives the substrate 21 to move in the first direction, the permanent magnet 30 on the substrate 21 moves in the first direction relative to the coil winding 40. At this time, the coil winding 40 cuts the magnetic flux lines generated by the permanent magnet 30 and generates electricity. The generated electricity can flow along the coil winding 40 to the battery to charge the battery.

[0086] In some specific embodiments of the present invention, when the wheel 6 drives the linear motor 1 to vibrate and the vibration frequency of the linear motor 1 is less than or equal to 16 Hz, the linear motor 1 is in the first working state, and the substrate 21 can move along the first direction. When the vibration frequency of the linear motor 1 is greater than 16 Hz, the linear motor 1 is in the second working state, and the battery can be charged.

[0087] Among them, when the linear motor 1 is in the first working state and is applied to a vehicle, the linear motor 1 can provide damping force for the wheel 6 as needed, thereby reducing the vibration transmitted from the wheel 6 to the vehicle body, and can also adjust the posture of the vehicle as needed, adjust the distance between the vehicle body and the ground, so that the vehicle can pass through obstacles smoothly.

[0088] The following describes a suspension system according to an embodiment of the present invention. The suspension system according to an embodiment of the present invention includes the linear motor 1 according to the above-mentioned embodiment of the present invention.

[0089] In some embodiments, the linear motor 1 is applied to the suspension system of a vehicle, the housing 10 of the linear motor 1 is fixed to the body of the vehicle, and the substrate 21 is connected to the wheel 6 through a steering knuckle connector. When the vehicle is driving, due to the flat road surface, the wheel 6 will vibrate in the up and down directions when the vehicle is driving. The linear motor 1 drives the substrate 21 in the up and down directions to hinder the vibration of the wheel 6 in the up and down directions, thereby reducing the amplitude of the vibration of the wheel 6 in the up and down directions, reducing the vibration transmitted from the wheel 6 to the body, and facilitating improving the comfort of the drivers and passengers in the vehicle.

[0090] At the same time, while driving the substrate 21 to move in the up and down directions, the linear motor 1 can also control the distance between the vehicle body and the wheel 6, and thus can control the distance between the vehicle body and the ground. For example, when the obstacle on the road surface is high, the substrate 21 can be driven to move downward in the up and down directions so that the vehicle body can move upward relative to the substrate 21, thereby facilitating the increase of the distance between the vehicle body and the road surface, so that the vehicle can pass through the obstacle smoothly.

[0091] The suspension system according to the embodiment of the present invention can generate a larger damping force by utilizing the linear motor 1 according to the above embodiment of the present invention, and has the advantages of reducing the vibration amplitude of the wheel 6 and improving the damping effect on the wheel 6.

[0092] A vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes the suspension system according to the above-described embodiment of the present invention.

[0093] The vehicle according to the embodiment of the present invention can generate a larger damping force by utilizing the suspension system according to the above embodiment of the present invention, and has the advantages of reducing the vibration amplitude of the wheel 6 and improving the damping effect on the wheel 6.

[0094] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0095] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0096] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0097] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A linear motor, characterized in that: The linear motor comprises: A shell, wherein a cavity is provided in the shell, and the cavity has a first side wall and a second side wall; a substrate, at least a portion of which is located in the cavity, and the substrate has a third sidewall and a fourth sidewall; The substrate and the housing move relative to each other in a first direction, the first side wall and the third side wall are arranged relative to each other in a second direction, and a coil winding is arranged on one of the first side wall and the third side wall, and a permanent magnet is arranged on the other side; The second side wall and the fourth side wall are arranged opposite to each other in the second direction and spaced apart from each other, and a coil winding is arranged on one of the second side wall and a permanent magnet is arranged on the other side; When the coil winding is energized, the magnetic field generated by the coil winding interacts with the magnetic field generated by the permanent magnet, so that the permanent magnet and the coil winding can move relative to each other; By controlling the direction of the current in the coil winding, the force between the coil winding and the permanent magnet is changed, and the movement of the substrate in the cavity relative to the shell along the first direction is controlled, so as to drive the substrate to move in the cavity relative to the shell along the first direction.

2. The linear motor according to claim 1, characterized in that: The permanent magnet is fixed to the third side wall and the fourth side wall, and the coil winding is fixed to the first side wall and the second side wall.

3. The linear motor according to claim 1, characterized in that: The first side wall and the second side wall are arranged relatively parallel to each other, and the third side wall and the fourth side wall are arranged relatively parallel to each other.

4. The linear motor according to any one of claims 1 to 3, characterized in that: The linear motor further comprises a guide assembly, wherein the guide assembly cooperates with the housing and the base plate respectively to guide the moving direction.

5. The linear motor according to claim 4, characterized in that: The guide assembly is located between the base plate and the housing.

6. The linear motor according to claim 4, characterized in that: The guide assembly comprises a first guide member and a second guide member, wherein the first guide member is arranged on the inner wall of the shell, and the second guide member is arranged on the base plate, and the first guide member and the second guide member are plug-fitted and relatively slidable.

7. The linear motor according to claim 6, characterized in that: The first guide member is provided with a slide groove extending along the first direction, a portion of the second guide member extends into the slide groove, at least one side wall of the slide groove is provided with a matching protrusion, and the second guide member is provided with a matching groove, and the matching protrusion extends into the matching groove.

8. The linear motor according to claim 6, characterized in that: There are a plurality of first guide members, and the plurality of first guide members are arranged at intervals in the first direction, and the second guide member is slidably matched with the plurality of first guide members.

9. The linear motor according to claim 4, characterized in that: There are multiple guide components, and at least two of them are arranged opposite to each other.

10. The linear motor according to claim 9, characterized in that: The substrate has a fifth side wall and a sixth side wall disposed opposite to each other, the cavity has a seventh side wall and an eighth side wall disposed opposite to each other, the fifth side wall is disposed opposite to the seventh side wall, and at least one guide component is disposed between the fifth side wall and the seventh side wall; The sixth side wall is arranged opposite to the eighth side wall, and at least one guide component is arranged between the sixth side wall and the eighth side wall.

11. The linear motor according to claim 10, characterized in that: The fifth side wall is arranged at an angle to the third side wall and the fourth side wall, and the seventh side wall is arranged at an angle to the first side wall and the second side wall.

12. The linear motor according to claim 11, characterized in that: The included angles between the fifth side wall and the third side wall and the fourth side wall are 90 degrees, and the included angles between the seventh side wall and the first side wall and the second side wall are 90 degrees.

13. A suspension system, characterized in that: It comprises a linear motor according to any one of claims 1 to 12, wherein the housing is suitable for being connected to a vehicle body, and the side of the base plate extending out of the cavity is suitable for being connected to a wheel.

14. A vehicle, characterized in that: Comprising a suspension system according to claim 13.

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