Suspension system, motor, actuator and vehicle

Abstract

The invention discloses a suspension system, a motor, an actuator and a vehicle, relates to the technical field of vehicles, and aims to solve the problems that the suspension system cannot provide enough thrust for the vehicle under a severe working condition and the driving stability of the vehicle is influenced by the duration required by the thrust for the working condition. The suspension system comprises a motor which is suitable for adjusting the distance between a vehicle body and a wheel; the motor comprises a permanent magnet and a winding assembly, one of the permanent magnet and the winding assembly is connected with the vehicle body, and the other is connected with the wheels; the permanent magnet and the winding assembly cooperate to drive the motor to work. The motor is provided with a cooling flow channel, the cooling flow channel is used for controlling the temperature and / or the flow of a cooling medium in the cooling flow channel, so that the motor at least provides the required thrust corresponding to the current working condition, and the temperature of the permanent magnet corresponding to the net heat production amount generated by at least running for the target duration under the required thrust does not exceed the demagnetization temperature of the permanent magnet; the net heat production is obtained by subtracting heat taken away by the cooling medium from heat production of the winding assembly under the given current.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a suspension system, a motor, an actuator and a vehicle. Background Art

[0002] The suspension system is a device connected between the vehicle body and wheels. It mainly generates thrust on the vehicle body to reduce the vibration of the vehicle body, thereby improving the comfort and handling performance of the vehicle. During driving, vehicles usually encounter various road conditions such as jumping over steps, jumping over potholes, tilting, and undulating roads. In these road conditions, the suspension system is required to provide thrust to the vehicle body to keep the body stable.

[0003] In the related art, the suspension system overheats quickly, and the thrust provided to the vehicle body is large but lasts for a short time, which results in the suspension system's functions being limited. When encountering harsh working conditions, the system cannot perform to its original performance, resulting in the vehicle being unable to provide sufficient thrust to the vehicle in some harsh working conditions, such as going over a pothole, rolling, etc., and unable to maintain the thrust for the time required for the working condition, thus affecting the vehicle's driving stability. Summary of the invention

[0004] The purpose of the present invention is to provide a suspension system, a motor, an actuator and a vehicle, aiming to solve the problem that the suspension system cannot provide sufficient thrust to the vehicle under severe working conditions and cannot maintain the thrust for the time required for the working conditions, thereby affecting the driving stability of the vehicle.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] In a first aspect, the present invention provides a suspension system, which includes a motor, which is suitable for being connected between a vehicle body and a wheel to adjust the distance between the vehicle body and the wheel; the motor includes a permanent magnet and a winding assembly, one of which is suitable for being connected to the vehicle body, and the other of which is suitable for being connected to the wheel; the permanent magnet cooperates with the winding assembly to drive the motor to work; the motor is provided with a cooling channel, which is used to cool the winding assembly by controlling the temperature and / or flow of a cooling medium in the cooling channel, so that the motor at least provides the required thrust corresponding to the current operating condition, and the temperature of the permanent magnet corresponding to the net heat generated by running for at least the target time under the required thrust does not exceed the demagnetization temperature of the permanent magnet; the net heat generation is the heat generated by the winding assembly under a given current minus the heat taken away by the cooling medium.

[0007] The suspension system provided in the embodiment of the present application, the permanent magnet cooperates with the winding assembly to drive the motor to work, thereby generating thrust on the vehicle body to adjust the distance between the vehicle body and the wheel. Heat is generated during the operation of the motor, and the heat accumulates in the housing, causing the permanent magnet to heat up and affecting the thrust of the motor on the vehicle body. Based on this, by setting a cooling channel, during the operation of the motor, the cooling medium flowing in the cooling channel can exchange heat with the winding assembly, thereby taking away the heat generated during the operation of the winding assembly and the heat generated by the operation of other parts of the motor, so that the temperature of the permanent magnet does not exceed the demagnetization temperature of the permanent magnet.

[0008] In this way, the permanent magnet can be prevented from heating up too quickly, and the permanent magnet can cooperate with the winding assembly and last for a longer time, so that the motor can at least provide the required thrust corresponding to the current operating conditions, and run for at least the target time under the required thrust, thereby increasing the function of the suspension system, so that the suspension system can generate sufficient thrust to the vehicle body under various operating conditions, and can last for a sufficient time under this thrust, so as to improve the vehicle's driving stability.

[0009] In some embodiments, under different operating conditions of the vehicle, the thrust provided by the motor to the vehicle body (100) is not less than the required thrust corresponding to the current operating condition, and under the required thrust corresponding to the current operating condition, the maximum continuous working time of the motor is not less than the target time, the target time is the shortest time the motor continuously works at the required thrust corresponding to the current operating condition to complete the current operating condition, the maximum continuous working time of the motor is the maximum time the temperature of the permanent magnet corresponding to the net heat generated by the motor continuously working under the required thrust corresponding to the current operating condition is maintained at no more than the demagnetization temperature of the permanent magnet, wherein the thrust provided by the motor to the vehicle body increases as the impact of the road surface on the vehicle body increases.

[0010] In some embodiments, when the vehicle is in a first working condition, the thrust of the motor is not less than a first threshold value F1, and the duration of continuous operation of the motor is not less than T1, and the first threshold values ​​F1 and T1 are used to reduce the impact degree of the vehicle in the first working condition, wherein the first working condition includes a working condition where the vehicle passes through an undulating road surface;

[0011] When the vehicle is in the second working condition, the thrust of the motor is not less than a second threshold value F2, and the motor continues to work for a duration not less than T2, and the second threshold value F2 and T2 are used to reduce the roll degree of the vehicle when it is in the second working condition, wherein the second working condition includes a turning condition of the vehicle;

[0012] When the vehicle is in the third working condition, the thrust of the motor is not less than the third threshold value F3, and the duration of continuous operation of the motor is not less than T3, and the third threshold values ​​F3 and T3 are used to reduce the pitch degree of the vehicle along the X direction when the vehicle is in the third working condition, wherein the third working condition includes the working condition of starting and stopping the vehicle;

[0013] Among them, F1>F2>F3, T1<T2<T3.

[0014] In some embodiments, the relationship between the net heat generated by the motor, the heat generated by the motor, and the heat removed by the cooling medium is:

[0015]

[0016] in, E is the net heat generated by the motor, E g is the heat generated by the motor, q c is the heat taken away by the cooling medium, ρ is the density of the cooling medium, v is the volume of the cooling channel, c is the specific heat capacity of the cooling medium, T is the temperature of the motor, t is the cooling time, T ∞ is the temperature of the cooling medium, and R is the thermal resistance of the motor.

[0017] In some embodiments, the motor further includes a center rod, the winding assembly is disposed on the center rod, and the cooling channel is disposed in the center rod.

[0018] In some embodiments, the relationship between the thrust of the motor and the maximum duration of continuous operation of the motor is:

[0019] y=kx n

[0020] Among them, y is the maximum duration of the motor's continuous operation, x is the thrust of the motor, k and n are constants, k is a positive number, and n is a negative number.

[0021] In some embodiments, along the radial direction of the center rod, the projection of the cooling channel is the first projection, and the projection of the winding assembly is the second projection; the overlapping part of the first projection and the second projection in the radial direction of the center rod, and the length along the axial direction of the center rod are the overlapping length; k decreases as the overlapping length decreases, and n decreases as the overlapping length decreases.

[0022] In some embodiments, a projection of the cooling channel in the radial direction of the center rod is a first projection, and along the axial direction of the center rod, a length of the first projection is not less than a length of the winding assembly.

[0023] In some embodiments, the projection of the winding assembly in the radial direction of the center rod is the second projection; the overlapping part of the first projection and the second projection in the radial direction of the center rod, the length along the axial direction of the center rod is the overlapping length; the overlapping length is equal to the length of the second projection in the axial direction of the center rod.

[0024] In some embodiments, the projection of the winding assembly in the radial direction of the center rod is the second projection; the overlapping part of the first projection and the second projection in the radial direction of the center rod, the length along the axial direction of the center rod is the overlapping length; the maximum duration of continuous operation of the motor decreases as the overlapping length decreases.

[0025] In some embodiments, the winding assembly includes a plurality of iron cores and coils. The plurality of iron cores are arranged axially along the center rod, and a receiving groove is formed between two adjacent iron cores; the coil is received in the receiving groove.

[0026] In some embodiments, the coil includes three-phase conductors, the cross-sectional area of ​​each phase conductor is greater than or equal to 2.5 square millimeters and less than or equal to 3.5 square millimeters; the length of each phase conductor is not less than a first length, and the first length is greater than or equal to 28 meters and less than or equal to 42 meters.

[0027] In some embodiments, the resistance of each phase conductor is no greater than 0.5 ohms.

[0028] In some embodiments, the motor serves as a power element and also as an actuator.

[0029] In some embodiments, the motor includes a moving component and a fixed component, the fixed component includes a center rod and a winding component, the moving component and the fixed component can move relative to each other along the axial direction of the center rod; the moving component is formed as an actuator, and the moving component and the fixed component cooperate to form a power element.

[0030] In some embodiments, the motion component includes a shell, a lower fork arm and a permanent magnet, a portion of the center rod is located in the shell, and the center rod is slidably connected to the shell, and the winding assembly is arranged in the shell; the lower fork arm is connected to the outside of the shell and is suitable for connecting to the wheel; and the permanent magnet is connected to the inner wall surface of the shell and is arranged around the winding assembly; wherein the shell and the lower fork arm form an actuator, and the permanent magnet and the winding assembly form a power element.

[0031] In some embodiments, the mating gap between the moving component and the fixed component is formed as an electromagnetic gap.

[0032] In some embodiments, the motor also includes a sensor, which includes a read head and a magnetic strip, one of the read head and the magnetic strip is arranged in the moving component, and the other of the read head and the magnetic strip is arranged in the fixed component; the read head can sense the magnetic field signal of the magnetic strip to detect the relative displacement of the fixed component and the moving component.

[0033] In some embodiments, the resistance of the suspension system is less than 150N.

[0034] In some embodiments, the motor includes a moving component and a fixed component, the fixed component includes a center rod and a winding component, and the moving component and the fixed component are capable of relative movement along the axial direction of the center rod; the moving component includes a guide rod, the center rod and the guide rod are nested to form a guide assembly, and the guide stiffness of the guide assembly is not less than 7767N / mm.

[0035] In some embodiments, the guide diameter of the guide rod is not less than 23 mm.

[0036] In some embodiments, the elastic modulus of the guide rod and the elastic modulus of the center rod are both not less than 200 GPa.

[0037] In some embodiments, the fixing assembly also includes a lower fork arm, which is suitable for connecting to the wheel; the guide rod includes a rod body and a base, one end of the rod body is nested with the center rod, and the base is connected to the other end of the rod body and is detachably connected to the lower fork arm; along the axial direction of the rod body, the thickness of the base is not less than 3 mm.

[0038] In some embodiments, the material of the guide rod includes a first material, the material of the lower fork arm includes a second material, and the density of the first material is not less than the density of the second material.

[0039] In some embodiments, the center rod is provided with a guide hole extending along the axial direction of the center rod, and at least a portion of the guide rod is located in the guide hole; the motion component also includes a bearing assembly, the bearing assembly includes a cylindrical bearing seat and a plurality of balls, the bearing seat is arranged in the guide hole and fixed to the center rod, the plurality of balls are embedded in the bearing seat and can rotate relative to the bearing seat; the guide rod is passed through the bearing seat and rollingly cooperates with the plurality of balls.

[0040] In some embodiments, the guide rod is provided with a guide groove, which is recessed from the peripheral wall surface of the guide rod toward the axis of the guide rod and extends along the axial direction of the guide rod. Part of the ball is located in the guide groove and rolls with the guide groove.

[0041] In some embodiments, the cross section of the guide slot is arc-shaped, and the arc matches the ball; the cross section of the guide slot is perpendicular to the axial direction of the guide rod.

[0042] In some embodiments, the friction coefficient of the inner wall surface of the guide groove is less than or equal to 0.05.

[0043] In some embodiments, the multiple balls include multiple groups of balls, which are arranged at intervals along the circumference of the guide rod; the guide rod is provided with multiple guide grooves, which are arranged at intervals along the circumference of the guide rod, and a group of balls rolls in cooperation with one guide groove.

[0044] In some embodiments, the iron core includes a yoke and a tooth portion, the yoke is provided with a first mounting hole, and the center rod is passed through the first mounting hole; the tooth portion is connected to the yoke and is arranged around the first mounting hole.

[0045] In some embodiments, the tooth portion includes a plurality of separately arranged support members, and the plurality of support members are arranged along the circumference of the yoke portion and connected to the yoke portion.

[0046] In some embodiments, the tooth portion further includes an insulating member, and an insulating member is provided between any two adjacent supporting members.

[0047] In some embodiments, the sides of any two adjacent support members facing each other are respectively the first side surface and the second side surface; the insulating member is an insulating coating, and the insulating coating is disposed on at least one of the first side surface and the second side surface.

[0048] In some embodiments, the tooth portion further includes an adhesive member, and any two adjacent support members are bonded together by the adhesive member.

[0049] In some embodiments, the material of the adhesive member is an insulating material.

[0050] In some embodiments, the yoke is provided with a clamping groove extending along the circumference of the first mounting hole, and the clamping groove is recessed from the outer circumferential surface of the yoke toward the inner circumferential surface; one end of the support member facing the yoke is provided with a protrusion protruding axially along the first mounting hole, and the protrusion is clamped in the clamping groove.

[0051] In some embodiments, along a direction from the support member toward the yoke, a thickness of the support member in an axial direction of the first mounting hole gradually decreases.

[0052] In some embodiments, along a direction from the support member toward the yoke, a distance between two side surfaces of the support member in a circumferential direction of the first mounting hole gradually decreases.

[0053] In some embodiments, a first gap is formed between two adjacent support members.

[0054] In some embodiments, along the radial direction of the first mounting hole, the width of the first gap is the same everywhere.

[0055] In some embodiments, along the radial direction of the first mounting hole, the width of the first gap gradually increases.

[0056] In some embodiments, the minimum width of the first gap is greater than or equal to 0.1 mm.

[0057] In some embodiments, one of any two adjacent support members is provided with a first clamping notch, and the other is provided with a first clamping protrusion, and the first clamping protrusion is clamped in the first clamping notch.

[0058] In some embodiments, the yoke includes a plurality of arc segments arranged along the circumference of the yoke, and a second gap is formed between two adjacent arc segments.

[0059] In some embodiments, along the radial direction of the first mounting hole, the width of the second gap is the same everywhere.

[0060] In some embodiments, along the radial direction of the first mounting hole, the width of the second gap gradually increases.

[0061] In some embodiments, the minimum width of the second gap is greater than or equal to 0.1 mm.

[0062] In some embodiments, an arc segment is connected to at least one support member; or, a support member is connected to at least one arc segment.

[0063] In some embodiments, the tooth portion includes a first tooth portion and a second tooth portion which are separately arranged; the first tooth portion includes a plurality of first support members which are arranged at intervals along the circumference of the first mounting hole; the second tooth portion includes a plurality of second support members which are arranged at intervals along the circumference of the first mounting hole; the plurality of first support members and the plurality of second support members are arranged alternately along the circumference of the first mounting hole, and a third gap is formed between adjacent first support members and second support members.

[0064] In some embodiments, a plurality of first support members are connected to an outer circumferential surface of the yoke.

[0065] In some embodiments, the plurality of first support members and the yoke are an integral structure.

[0066] In some embodiments, an inner diameter of the first tooth portion is the same as an outer diameter of the yoke portion, and an inner diameter of the second tooth portion is the same as an outer diameter of the yoke portion.

[0067] In some embodiments, the yoke includes a first yoke and a second yoke that are separately arranged, a plurality of first support members are connected to the first yoke, and a plurality of second support members are connected to the second yoke.

[0068] In some embodiments, the plurality of first support members and the first yoke are an integral structure, and the plurality of second support members and the second yoke are an integral structure.

[0069] In some embodiments, the second yoke is located on one side of the first yoke in the axial direction of the first mounting hole.

[0070] In some embodiments, the inner diameter of the first yoke is the same as the inner diameter of the second yoke.

[0071] In some embodiments, part of the second yoke is disposed inside the first yoke.

[0072] In some embodiments, the outer diameter of the second yoke is the same as the inner diameter of the first yoke.

[0073] In some embodiments, the first yoke portion includes a first annular portion and a plurality of first rib portions, the plurality of first rib portions are connected to the outer circumferential surface of the first annular portion, and are arranged at intervals along the circumference of the first annular portion; the second yoke portion includes a second annular portion and a plurality of second rib portions, the second annular portion is located on one side of the first annular portion in the axial direction of the first mounting hole, the plurality of first rib portions and the plurality of second rib portions are arranged alternately along the circumference of the first mounting hole, and a fourth gap is formed between adjacent first rib portions and second rib portions.

[0074] In some embodiments, a plurality of first support members are connected to a side surface of the first annular portion facing the second annular portion, and a first rib portion is connected to a first support member; a plurality of second support members are connected to an outer peripheral surface of the second annular portion, and a second rib portion is connected to a side surface of a second support member facing the first annular portion in the axial direction of the first mounting hole.

[0075] In some embodiments, the inner diameter of the first annular portion is the same as the inner diameter of the second annular portion.

[0076] In some embodiments, the tooth portion also includes multiple connecting ribs and multiple connecting grooves, a connecting rib is snapped into a connecting groove; any two adjacent first support members are connected by a connecting rib, and multiple second support members are provided with connecting grooves; or, any two adjacent second support members are connected by a connecting rib, and multiple first support members are provided with connecting grooves.

[0077] In some embodiments, a plurality of first support members are connected to a surface of the first yoke portion facing the second yoke portion, and a plurality of second support members are connected to an outer peripheral surface of the second yoke portion.

[0078] In some embodiments, a blocking groove is provided on the core.

[0079] In some embodiments, the blocking groove includes a first blocking groove, and the first blocking groove is disposed on the tooth portion.

[0080] In some embodiments, the first blocking groove extends along the circumference of the tooth portion.

[0081] In some embodiments, the first blocking groove extends in a direction from an inner edge of the tooth portion to an outer edge of the tooth portion.

[0082] In some embodiments, the first blocking groove extends in a radial direction of the tooth portion.

[0083] In some embodiments, the blocking groove further includes a second blocking groove, and the second blocking groove is disposed on the yoke.

[0084] In some embodiments, the second blocking groove extends along the circumference of the yoke.

[0085] In some embodiments, the second blocking groove extends in a direction from an inner edge of the yoke to an outer edge of the yoke.

[0086] In some embodiments, the second blocking groove extends in a radial direction of the yoke.

[0087] In some embodiments, there are multiple first blocking grooves, and the multiple first blocking grooves are arranged at intervals along the circumference of the first mounting hole; there are multiple second blocking grooves, and the multiple second blocking grooves are arranged at intervals along the circumference of the first mounting hole.

[0088] In some embodiments, a first blocking groove is in communication with a second blocking groove.

[0089] In some embodiments, the core is made using a powder metallurgy process.

[0090] In some embodiments, the raw materials of the core include a soft magnetic composite material in powdered form and an insulating material, and the insulating material is coated on the surface of the soft magnetic composite material.

[0091] In some embodiments, the iron core is provided with a rib groove, and a reinforcement piece is provided in the rib groove.

[0092] In some embodiments, the reinforcement member is made using an injection molding process.

[0093] In some embodiments, the rib grooves extend along the circumference of the core; or, the rib grooves extend along the radial direction of the core.

[0094] In some embodiments, along the axial direction of the iron core, the iron core includes a first surface and a second surface; the rib grooves include a plurality of first rib grooves, a plurality of second rib grooves and a plurality of third rib grooves, the plurality of first rib grooves are arranged at intervals along the circumference of the iron core, and the first rib grooves are recessed from the first surface toward the second surface; the plurality of second rib grooves are arranged at intervals along the circumference of the iron core, and the second rib grooves are recessed from the second surface toward the first surface; the plurality of third rib grooves are arranged at intervals along the circumference of the iron core, and the third rib grooves are recessed from the inner circumference surface of the iron core toward the outer circumference surface.

[0095] In some embodiments, along the circumference of the iron core, the first rib groove includes a first inner wall surface and a second inner wall surface, and the second rib groove includes a third inner wall surface and a fourth inner wall surface; one first rib groove corresponds to one second rib groove, and for the corresponding first rib groove and second rib groove, along the axial direction of the iron core, the projection of the second inner wall surface coincides with the projection of the third inner wall surface, and along the circumference of the iron core, the first inner wall surface and the fourth inner wall surface are respectively located on both sides of the first inner wall surface.

[0096] In some embodiments, the third rib groove penetrates the core along the axial direction of the core, and at least one of a first rib groove and a second rib groove is connected to a third rib groove.

[0097] In some embodiments, the rib groove further includes a plurality of fourth rib grooves, the fourth rib grooves extend along the axial direction of the iron core, and a first rib groove is connected to a second rib groove through a fourth rib groove.

[0098] In some embodiments, the iron core further includes a force-bearing member, which is disposed in the first mounting hole and extends along the circumference of the first mounting hole.

[0099] In some embodiments, a first recessed portion is formed on an outer circumferential surface of the force-bearing member, a first protruding portion is formed on an inner circumferential surface of the yoke, and the first protruding portion is located in the first recessed portion.

[0100] In some embodiments, a second recessed portion is formed on one side of the force-bearing member in the axial direction of the iron core, a second protruding portion is formed on the inner circumferential surface of the yoke, and the second protruding portion is located in the second recessed portion.

[0101] In some embodiments, a third protrusion is formed on the inner circumference of the force-bearing member, a third recess is formed on the outer circumference of the center rod, the center rod passes through the force-bearing member, and the third protrusion is located in the third recess.

[0102] In some embodiments, the multiple cores include a first end core, a second end core and a middle core, the middle core is arranged between the first end core and the second end core; the first end core is provided with a first magnetic isolation groove, the first magnetic isolation groove is recessed from the side surface of the first end core facing away from the second end core toward the direction of the second end core; the second end core is provided with a second magnetic isolation groove, the second magnetic isolation groove is recessed from the side surface of the second end core facing away from the first end core toward the direction of the first end core.

[0103] In some embodiments, the first magnetic isolation groove extends along the circumference of the first end core, and the second magnetic isolation groove extends along the circumference of the second end core.

[0104] In some embodiments, a first limiting protrusion is formed on the inner circumference of the first end iron core, and a second limiting protrusion is formed on the inner circumference of the second end iron core; a first limiting groove and a second limiting groove are formed on the outer circumference of the center rod, the first limiting protrusion is located in the first limiting groove, and the second limiting protrusion is located in the second groove.

[0105] In some embodiments, the iron core further includes a first tooth crown, which is disposed at the outer edge of the tooth portion and surrounds the tooth portion; along the radial direction of the iron core, the projection of the tooth portion does not exceed the projection range of the first tooth crown.

[0106] In some embodiments, the first tooth crown is formed with a first bevel and a second bevel, which are arranged axially along the core, and the distance between the first bevel and the second bevel gradually increases from the outer circumference of the core toward the inner circumference.

[0107] In some embodiments, the iron core is provided with a wire passing groove, which is recessed from the outer circumference of the iron core toward the inner circumference, and the wire passing groove passes through the iron core along the axial direction of the iron core; along the axial direction of the iron core, the projections of the wire passing grooves of multiple iron cores overlap, so that the wire passing grooves of multiple iron cores form a wire passing channel; the wire passing channel is used to accommodate the wire connection section of the coil, and the wire connection section is used to connect adjacent coils of the same phase.

[0108] In some embodiments, the center rod includes a first rod segment and a second rod segment, the winding assembly is connected to the second rod segment, and the first rod segment is provided with an outlet channel; the coil of the same phase that is closest to the first rod segment includes an outlet head, which is provided in the outlet channel and is used to connect the outlet wires of the winding assembly, and the outlet wires are passed through the outlet channel for connecting the connector.

[0109] In some embodiments, the outlet channel includes a radial hole and an axial hole, and the radial hole is connected to the axial hole.

[0110] In some embodiments, the outlet channel is disposed inside the first rod segment.

[0111] In some embodiments, the motor includes a moving component and a fixed component, the fixed component includes a center rod and a winding component, and the moving component and the fixed component can move relative to each other along the axial direction of the center rod; the moving component includes a shell, the shell is provided with a second mounting hole, the second mounting hole is connected to the internal space of the shell, the center rod is passed through the second mounting hole, and the winding assembly is located inside the shell.

[0112] In some embodiments, the motion assembly further includes a first linear bearing, which is disposed in the second mounting hole and connected to the housing, and the center rod is passed through the first linear bearing and is slidably connected to the first linear bearing.

[0113] In some embodiments, the motion component also includes a first seal and a second seal, the first seal is arranged between the inner wall surface of the second mounting hole and the center rod; the second seal is arranged between the inner wall surface of the second mounting hole and the center rod; the first linear bearing is arranged between the first seal and the second seal; the first seal, the second seal, the center rod and the inner wall surface of the mounting hole form a first oil storage chamber, and the first oil storage chamber is provided with lubricating liquid.

[0114] In some embodiments, the shell is provided with an oil filling hole, which extends from the outer wall of the shell to the first oil storage chamber; the motion component also includes a sealing member, which is detachably connected to the oil filling hole.

[0115] In some embodiments, the moving assembly further includes a sealing bracket, which is disposed on the outside of the shell and detachably connected to the top wall of the shell; a portion of the first sealing member is disposed between the top wall and the sealing bracket.

[0116] In some embodiments, the first seal includes an annular sealing portion and a supporting portion, wherein the inner circumference of the annular sealing portion contacts the center rod; the supporting portion is connected to the outer circumference of the annular sealing portion and is arranged around the annular sealing portion, and the supporting portion is arranged between the top wall and the sealing bracket.

[0117] In some embodiments, when the annular sealing portion is in a free state, along the axial direction of the annular sealing portion, the distance between the inner circumferential surface of the annular sealing portion and the axis of the annular sealing portion first increases and then decreases.

[0118] In some embodiments, the sealing bracket includes a main body and a connecting portion, wherein the main body is located on the side of the supporting portion facing away from the top wall; the connecting portion is connected to the main body and is arranged around the supporting portion, and the connecting portion is connected to the shell.

[0119] In some embodiments, the center rod is provided with a guide hole extending axially along the center rod; the motion component also includes a guide rod, which is located inside the shell, and at least a portion of the guide rod is located in the guide hole; the fixed component also includes a second linear bearing, which is provided in the guide hole and connected to the center rod, and the guide rod is passed through the second linear bearing and is slidably connected to the second linear bearing.

[0120] In some embodiments, a second oil storage chamber is formed between the guide rod and the inner wall surface of the guide hole, and a lubricating liquid is provided in the second oil storage chamber; the fixing assembly also includes a third seal, and the third seal is arranged between the inner wall surface of the guide hole and the guide rod, and the second linear bearing is located on the side of the third seal facing the second oil storage chamber.

[0121] In some embodiments, the suspension system also includes an upper support assembly and a buffer body. The upper support assembly is arranged outside the shell and connected to the center rod. The upper support assembly is used to connect to the vehicle body; the buffer body is connected to the side of the upper support assembly facing the shell.

[0122] In some embodiments, the upper support assembly includes an outer bracket and a connecting assembly, the outer bracket is provided with an installation space and a first avoidance hole, the center rod is passed through the first avoidance hole, and the buffer body is connected to the side of the outer bracket facing the shell; the connecting assembly is provided in the installation space and connects the outer bracket and the center rod.

[0123] In some embodiments, the buffer body and the outer support are an integral structure.

[0124] In some embodiments, the connecting assembly includes an inner sleeve, a fixing member, a cover plate and a fourth sealing member, wherein the inner sleeve is connected to the outer bracket and is arranged around the center rod; the fixing member is arranged on the side of the inner sleeve facing away from the shell and is threadedly connected to the center rod; the cover plate is arranged on the side of the inner sleeve facing away from the shell and is arranged around the fixing member, and the cover plate is connected to the outer bracket; the fourth sealing member is connected between the cover plate and the fixing member.

[0125] In some embodiments, the fourth sealing member can be expanded and contracted along the radial direction of the cover plate.

[0126] In some embodiments, the fourth sealing member is in the shape of an annular corrugated plate, and the corrugated portion of the fourth sealing member extends along the circumference of the cover plate.

[0127] In some embodiments, the suspension system further includes a fifth seal, which is disposed between an inner wall surface of the inner bushing and the center rod.

[0128] In some embodiments, the center rod is provided with a socket; the fixing assembly also includes a connector, which is used to connect the output wires of the winding assembly, and part of the connector is accommodated in the socket; at least one sixth seal is arranged around the inner wall surface of the socket and between the connector.

[0129] In some embodiments, the suspension system also includes a dustproof sleeve, which is sleeved on the outside of the shell, and one end of the dustproof sleeve is connected to the upper support assembly, and the other end of the dustproof sleeve is connected to the shell, and the dustproof sleeve can be extended and retracted along the axial direction of the shell.

[0130] In some embodiments, the suspension system further includes a lower support and an elastic element, wherein the lower support is connected to the shell; and the elastic element is disposed between the upper support assembly and the lower support.

[0131] In some embodiments, the center rod is provided with a first positioning portion, and the winding assembly is provided with a second positioning portion, and the first positioning portion and the second positioning portion cooperate to keep the center rod and the winding assembly relatively stationary.

[0132] In some embodiments, the first positioning portion is formed as a groove provided on the outer peripheral wall of the center rod, the second positioning portion is formed as a groove provided on the winding assembly, and the anti-rotation rod is provided between the first positioning portion and the second positioning portion.

[0133] In some embodiments, the central rod includes a first rod segment and a second rod segment, and the winding assembly is connected to the second rod segment;

[0134] The cooling channel includes an inlet channel, an outlet channel and a merging channel. The inlet channel extends from a side surface of the first rod segment facing away from the second rod segment to an end of the second rod segment facing away from the first rod segment; the outlet channel extends from a side surface of the first rod segment facing away from the second rod segment to an end of the second rod segment facing away from the first rod segment; the merging channel is provided at an end of the second rod segment facing away from the first rod segment and connects the inlet channel and the outlet channel.

[0135] In some embodiments, there are multiple water inlet channels, which are spaced apart along the circumference of the center rod; and / or, there are multiple water outlet channels, which are spaced apart along the circumference of the center rod.

[0136] In some embodiments, the merged flow channel extends along the circumference of the central rod.

[0137] In some embodiments, the moving component includes a shell, the shell is provided with a second mounting hole, the second mounting hole is connected to the internal space of the shell, and the center rod is passed through the second mounting hole; the reader is connected to the matching surface of the shell and the center rod, the magnetic strip is connected to the center rod, and the sensing surface of the reader faces the magnetic strip.

[0138] In some embodiments, the center rod is provided with a mounting groove, and the magnetic strip is arranged in the mounting groove.

[0139] In some embodiments, the sensor further includes a back plate, the back plate is disposed in the mounting groove, and the magnetic strip is disposed on a side surface of the back plate facing the reading head.

[0140] In some embodiments, at least a portion of the back plate is interference fit with an inner wall surface of the mounting groove.

[0141] In some embodiments, the back plate includes a main body, a first mating portion and a second mating portion, wherein the first mating portion and the second mating portion are respectively connected to two ends of the main body in a first direction, wherein the first direction is perpendicular to the arrangement direction of the back plate and the magnetic strip; there is an interference fit between the first mating portion and the inner wall surface of the mounting groove, and between the second mating portion and the inner wall surface of the mounting groove.

[0142] According to a second aspect of the present invention, a motor is provided for use in a suspension system. The motor includes a moving component and a fixed component. The moving component and the fixed component can move relative to each other along the axial direction of a center rod.

[0143] According to a third aspect of the present invention, an actuator is provided. The actuator includes a motor and an upper support assembly, wherein the upper support assembly is connected to a fixing assembly.

[0144] In some embodiments, the actuator further includes a lower support and an elastic element, wherein the lower support is connected to the motion component; and the elastic element is disposed between the upper support component and the lower support.

[0145] A fourth aspect of the present invention provides a vehicle, comprising a suspension system, a body and wheels, wherein the wheels are arranged on the lower side of the body, and the suspension system is connected between the body and the wheels.

[0146] It should be noted that the technical effects brought about by the implementation methods of the third aspect to the fourth aspect can refer to the technical effects brought about by the corresponding implementation methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0147] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0148] Figure 1 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0149] Figure 2 for Figure 1 a perspective view of the suspension system in the illustrated vehicle;

[0150] Figure 3 for Figure 2 a front view of the suspension system shown;

[0151] Figure 4 for Figure 3 Schematic diagram of the middle AA section;

[0152] Figure 5 for Figure 2 A schematic diagram of the structure of the motor in the suspension system shown;

[0153] Figure 6 for Figure 5 Schematic diagram of the structure of the middle BB section;

[0154] Figure 7 for Figure 6 The enlarged structural diagram at P1 in the middle;

[0155] Figure 8 for Figure 6 A schematic diagram of the structure of the center rod in the motor shown;

[0156] Fig. 9 for Figure 8 A schematic diagram of a half-section structure of the central rod shown;

[0157] Fig.10 for Figure 8 Schematic diagram of the CC section structure;

[0158] Fig.11 for Figure 8 Schematic diagram of the structure of the middle DD section;

[0159] Fig.12 A curve diagram showing the relationship between the thrust of the motor and the maximum continuous working time of the motor;

[0160] Fig.13 for Figure 5 A schematic diagram of the positional relationship between the sensor and the center rod in the motor shown;

[0161] Fig.14 for Fig.13 A magnified schematic diagram of the structure at P2 in the middle;

[0162] Fig.15 for Fig.13 A schematic diagram showing the positional relationship between the center rod and the magnetic strip in the motor shown;

[0163] Fig.16 for Fig.13 A schematic diagram of the connection relationship between the magnetic strip and the back plate in the motor shown;

[0164] Fig.17 for Fig.13 Schematic diagram of the relationship between the reading head and the magnetic stripe in the sensor shown;

[0165] Fig.18 for Figure 6 A schematic diagram of the structure of the guide rod in the motor shown;

[0166] Fig.19 for Fig.18 The exploded structural intent of the guide rod and the lower fork arm shown;

[0167] Fig. 20 for Fig.18 A front view structural schematic diagram of the guide rod shown;

[0168] Fig.21 for Figure 5 A schematic diagram of a cross-sectional structure of the motor shown;

[0169] Fig. 22 for Fig.21 A magnified schematic diagram of the structure at P3 in the middle;

[0170] Fig.23 for Fig.21 A schematic diagram of the matching relationship between the bearing assembly and the guide rod in the motor shown;

[0171] Fig.24 for Fig.21 A schematic diagram of the structure of the guide rod in the motor shown;

[0172] Fig.25 for Fig.21 A schematic diagram of the matching relationship between the ball of the bearing assembly in the motor and the guide groove in the guide rod;

[0173] Fig.26 for Figure 5 A schematic diagram of a first structure of the iron core in the motor shown;

[0174] Fig. 27 for Figure 5 A schematic diagram of a second structure of the iron core in the motor shown;

[0175] Fig.28 for Fig. 27 The structural schematic diagram of the yoke part in the iron core is shown;

[0176] Fig.29 for Fig. 27 Schematic diagram of the structure of the middle EE section;

[0177] Fig.30 for Fig. 27 A schematic diagram of the structure of the support member in the iron core shown;

[0178] Fig.31 for Figure 5 A third structural schematic diagram of the iron core in the motor shown;

[0179] Fig.32 for Fig.31 A schematic diagram of the structure of adjacent support members in the core when they are clamped together is shown in FIG.

[0180] Fig.33 for Fig.32 A schematic diagram of the structure enlarged at P4 in the middle;

[0181] Fig.34 for Fig.31 The schematic diagram of the structure when the yoke part of the iron core is a split structure;

[0182] Fig.35 for Fig.34 A magnified schematic diagram of the structure at P5 in the middle;

[0183] Fig.36 for Figure 5 A fourth structural schematic diagram of the iron core in the motor shown;

[0184] Fig.37 for Fig.36 The exploded schematic diagram of the iron core shown in the first perspective;

[0185] Fig.38 for Fig.36 An exploded schematic diagram of the iron core shown in the second viewing angle;

[0186] Fig.39 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the first perspective;

[0187] Fig.40 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the second viewing angle;

[0188] Fig.41 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the first viewing angle;

[0189] Fig.42 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the second viewing angle;

[0190] Fig.43 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the first viewing angle;

[0191] Fig.44 for Fig.36 An exploded schematic diagram of another structure of the iron core shown in the second viewing angle;

[0192] Fig.45 for Fig.36 A schematic diagram of a structure in which the iron core is provided with connecting ribs and connecting grooves;

[0193] Fig.46 for Fig.36 Another structural schematic diagram of the iron core shown is provided with connecting ribs and connecting grooves;

[0194] Fig.47 for Figure 5 A fifth structural schematic diagram of the iron core in the motor shown;

[0195] Fig.48 for Fig.47 A schematic structural diagram of the tooth portion of the core shown;

[0196] Fig.49 for Fig.47 A magnified schematic diagram of the structure at P6 in the middle;

[0197] Fig.50 for Fig.47 A schematic structural diagram of the first blocking groove of the iron core shown in FIG. 1 , which penetrates to the outer edge of the tooth portion and penetrates to the inner edge of the tooth portion;

[0198] Fig.51 for Fig.47 Another structural schematic diagram of the teeth portion in the iron core shown;

[0199] Fig.52 for Fig.47 A schematic structural diagram of the second blocking groove of the iron core shown extending to the inner edge of the yoke and extending to the outer edge of the yoke;

[0200] Fig.53 for Figure 5 A sixth structural schematic diagram of the iron core in the motor shown;

[0201] Fig.54 for Fig.53 The schematic diagram of the structure of the iron core shown in the relative perspective;

[0202] Fig.55 for Fig.53 The schematic diagram of the structure when the iron core is provided with a third rib groove;

[0203] Fig.56 for Fig.55 The schematic diagram of the structure of the iron core shown in the relative perspective;

[0204] Fig.57 for Fig.55 A magnified schematic diagram of the structure at P7 in the middle;

[0205] Fig.58 for Fig.56 A magnified schematic diagram of the structure at P8 in the middle;

[0206] Fig.59 for Fig.53 A schematic diagram of the structure of the force-bearing parts in the iron core shown;

[0207] Fig.60 for Fig.59 A schematic diagram of the structure of the force-bearing member shown in relative viewing angle;

[0208] Fig.61 for Figure 5 A schematic diagram of the arrangement of the iron core in the winding assembly of the motor shown;

[0209] Fig.62 for Fig.61 A front view of the core shown in;

[0210] Fig.63 for Fig.61 A schematic structural diagram of the iron core at the first end of the iron core shown;

[0211] Fig.64 for Fig.61 A schematic structural diagram of the second end core of the core shown;

[0212] Fig.65 for Fig.63 A schematic cross-sectional structure diagram of the iron core at the first end portion shown;

[0213] Fig.66 for Fig.64 A schematic cross-sectional structure diagram of the iron core at the second end portion shown;

[0214] Fig.67 for Figure 5 A schematic diagram showing the relationship between the iron core and the center rod in the motor shown;

[0215] Fig.68 for Fig.67 A schematic diagram of the structure of the center rod shown;

[0216] Fig.69 for Fig.68 A schematic cross-sectional structural diagram of the center rod shown;

[0217] Fig.70 for Figure 5 A schematic diagram of the sealing relationship between the center rod and the housing seal and guide rod in the motor shown;

[0218] Fig.71 for Fig.70 One of the partial structural schematic diagrams of the motor shown;

[0219] Fig.72 for Fig.70 A schematic diagram of the structure of the first seal in the motor shown;

[0220] Fig.73 for Fig.72 A schematic front view of the first sealing member shown;

[0221] Fig.74 for Fig.73 Schematic diagram of the FF cross-section structure;

[0222] Fig.75 for Fig.70 A schematic diagram of the three-dimensional structure of the sealing bracket in the motor shown;

[0223] Fig.76 for Fig.70 One of the schematic diagrams showing the positional relationship between the sealing bracket and the first sealing member in the motor;

[0224] Fig.77 for Fig.70 The second schematic diagram of the positional relationship between the sealing bracket and the first sealing member in the motor shown;

[0225] Fig.78 for Fig.71 The second schematic diagram of the partial structure of the motor shown;

[0226] Fig.79 for Figure 2 A schematic diagram of the connection relationship between the motor and the buffer body in the suspension system shown;

[0227] Fig.80 for Fig.79 A schematic diagram of the connection relationship between the upper support assembly and the buffer body in the suspension system shown;

[0228] Fig.81 for Fig.80 A schematic diagram of the cross-sectional structure of the middle and upper support assembly and the buffer body;

[0229] Fig.82 for Fig.79 A magnified schematic diagram of the structure at P9 in the middle;

[0230] Fig.83 for Figure 4 A magnified schematic diagram of the structure at P10;

[0231] Fig.84 for Figure 4 A magnified schematic diagram of the structure at P11;

[0232] Fig.85 for Figure 5 Schematic diagram of the matching relationship between the center rod and the winding assembly in the motor shown.

[0233] Reference numerals:

[0234] 1000, vehicle; 100, body; 200, wheel; 300, suspension system; 10, actuator;

[0235] 1. Motor; 11. Fixing assembly; 111. Center rod; 111A. First rod segment; 111B. Second rod segment; 111C. Mounting groove; 111D. Guide hole; 111E. Outlet channel; 111F. Radial hole; 111G. Axial hole; 111M. Second oil storage chamber; 111N. Insertion hole; 111H. First positioning portion; 111K. Anti-rotation rod;

[0236] 112, winding assembly; 1121, iron core; 1121A, yoke; 1121B, tooth; 1121C, first mounting hole; 1121D, support member; 1121E, clamping groove; 1121F, protrusion; 1121G, first clamping notch; 1121H, first clamping protrusion; 1121K, arc segment; 1121M, first surface; 1121N, second surface;

[0237] 112A, first tooth portion; 112B, second tooth portion; 112C, first support member; 112D, second support member; 112E, first yoke portion; 112F, second yoke portion; 112G, first annular portion; 112H, first convex rib portion; 112K, second annular portion; 112L, second convex rib portion; 112M, connecting rib; 112N, connecting groove; 112P, second positioning portion;

[0238] 1122, coil; 1122A, wire connection section; 1123, receiving groove;

[0239] 1124, blocking groove; 1124A, first blocking groove; 1122B, outlet head; 1124B, second blocking groove;

[0240] 1125, rib groove; 1125A, first rib groove; 1125B, second rib groove; 1125C, third rib groove; 1125D, first inner wall surface; 1125E, second inner wall surface; 1125F, third inner wall surface; 1125G, fourth inner wall surface; 1125H, fourth rib groove; 1125K, force bearing member; 1125M, first recessed portion; 1125N, second recessed portion;

[0241] 1126A, first end iron core; 1126B, second end iron core; 1126C, middle iron core; 1126D, first magnetic isolation groove; 1126E, second magnetic isolation groove; 1126F, first limiting protrusion; 1126G, second limiting protrusion; 1126H, first tooth crown; 1126M, first inclined surface; 1126N, second inclined surface;

[0242] 1127A, wire trough; 1127B, wire passage;

[0243] 113, bearing assembly; 1131, bearing seat; 1132, ball;

[0244] 114, second linear bearing; 115, third sealing member; 116, connector; 117, sixth sealing member;

[0245] 12. Motion assembly; 121. Housing; 1211. Second mounting hole; 1212. Oil filling hole; 122. Permanent magnet; 123. Guide rod; 1231. Rod body; 1232. Base; 1233. Guide slide groove; 124. First linear bearing; 125. First sealing member; 1251. Annular sealing portion; 1251A. First sealing end; 1251B. Second sealing end; 1252. Support portion;

[0246] 126, second sealing member; 127, blocking member; 128, sealing bracket; 1281, main body; 1282, connecting portion;

[0247] 13. Lower fork arm; 14. Cooling channel; 141. Water inlet channel; 142. Water outlet channel; 143. Converging channel;

[0248] 15. sensor; 151. reader; 152. magnetic strip; 1521. first magnetic pole; 1522. second magnetic pole; 153. back plate; 1531. body; 1532. first matching part; 1533. second matching part;

[0249] 2. Upper support assembly; 21. Upper support member; 22. External bracket; 221. Installation space; 222. First avoidance hole; 23. Connecting assembly; 231. Inner bushing; 232. Fixing member; 233. Cover plate; 234. Fourth sealing member;

[0250] 3. Buffer body;

[0251] 4. Fifth sealing member;

[0252] 5. Dustproof sleeve. DETAILED DESCRIPTION

[0253] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0254] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0255] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0256] The present application provides a vehicle 1000. The vehicle 1000 may be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid vehicle, an extended-range electric vehicle, a fuel vehicle, etc. The vehicle 1000 may also be a car, a van, a bus, a truck, a trailer, etc.

[0257] See also Figure 1 , Figure 1 The schematic diagram of the structure of the vehicle 1000 provided in the embodiment of the present application. The vehicle 1000 includes a body 100 and wheels 200. The body 100 is used for passengers to ride and carry objects, and the wheels 200 are installed under the body 100, used to carry the body 100, and can roll on the road surface to make the vehicle 100 travel.

[0258] The vehicle 1000 further includes a suspension system 300. The suspension system 300 is disposed between the vehicle body 100 and the wheels 200, and is used to transmit force and torque between the vehicle body 100 and the wheels 200, and to buffer the impact force on the vehicle body 100 during the driving process of the vehicle 1000, so as to improve riding or driving comfort.

[0259] The suspension system 300 may be a non-independent suspension system, an independent suspension system or an active suspension system.

[0260] In some embodiments of the present application, the suspension system 300 is an active suspension system, and the stiffness and damping characteristics of the active suspension system can be dynamically and adaptively adjusted according to the driving conditions of the vehicle 1000 (such as the motion state of the vehicle 1000 and the condition of the road surface, etc.), so that the suspension system 300 is always in the best vibration reduction state. For details, please refer to Figure 2 , Figure 2 for Figure 1 The suspension system 300 in the vehicle 1000 is shown in a three-dimensional diagram. The suspension system 300 may include an actuator 10. The actuator 10 can adjust the distance between the vehicle body 100 and the wheel 200 to make the vehicle 1000 more stable during operation. The actuator 10 can also buffer the vehicle body 100 to improve the driving comfort of the vehicle 1000.

[0261] In some embodiments, see Figure 3 and Figure 4 , Figure 3 for Figure 2 A front view of the suspension system 300 is shown, Figure 4 for Figure 3 AA section diagram. The actuator 10 includes a motor 1 and an upper support assembly 2. The motor 1 includes a fixed assembly 11, a moving assembly 12 and a lower fork arm 13. The moving assembly 12 and the fixed assembly 11 can move in a first direction (such as Figure 4 The first direction may be the height direction of the vehicle 1000.

[0262] The upper support assembly 2 is connected to the fixed assembly 11, and the lower fork arm 13 is connected to the moving assembly 12. One of the upper support assembly 2 and the lower fork arm 13 is connected to the vehicle body 100, and the other of the upper support assembly 2 and the lower fork arm 13 is connected to the wheel 200. The present application is exemplarily described in that the upper support assembly 2 is connected to the vehicle body 100, and the lower fork arm 13 is connected to the wheel 200.

[0263] In this way, the relative movement of the moving component 12 and the fixed component 11 can drive the upper support component 2 and the lower fork arm 13 to move relative to each other, thereby adjusting the distance between the vehicle body 100 and the wheel 200, so that the stability of the vehicle body 100 can be ensured when the vehicle 1000 is traveling on a rough road, thereby improving the driving comfort of the vehicle 1000.

[0264] In some examples, the upper support assembly 2 includes an upper support member 21. The actuator 10 also includes a lower support 30A and an elastic element 3A. The lower support 30A is connected to the motion assembly 12. The elastic element 3A is disposed between the upper support member 21 and the lower support 30A. Exemplarily, the elastic element 3A is disposed between the upper support member 21 and the lower support 30A. The upper support member 21 and the lower support 30A are used to support the elastic element 3A.

[0265] By relative movement of the fixed component 11 and the moving component 12, the deformation of the elastic element 3A can be changed accordingly, thereby adjusting the deformation of the elastic element 3A to adjust the buffering performance of the elastic element 3A, so that the buffering performance of the elastic element 3A matches the requirements of the vehicle 1000, thereby improving the buffering effect on the vehicle 1000 and improving the experience of the driver and passengers.

[0266] In some examples, the elastic element 3A may be a spring, a rubber tube, a rubber column, or the like.

[0267] In some embodiments, see Figure 5 and Figure 6 , Figure 5 for Figure 2 The schematic diagram of the structure of the motor 1 in the suspension system 300 is shown, Figure 6 for Figure 5 Schematic diagram of the structure of the middle BB section. The fixed component 11 of the motor 1 includes a center rod 111 and a winding component 112. The winding component 112 is connected to the peripheral wall surface of the center rod 111. The moving component 12 includes a shell 121 and a permanent magnet 122. The center rod 111 is slidably connected to the shell 121. Exemplarily, the shell 121 is provided with a second mounting hole 1211. The second mounting hole 1211 is connected to the internal space of the shell 121, and the center rod 111 is penetrated by the second mounting hole 1211. Among them, the lower fork arm 13 is connected to the outside of the shell 121. The upper support component 2 is connected to the center rod 111 and is located outside the shell 121.

[0268] The winding assembly 112 is located inside the housing 121. The permanent magnet 122 is connected to the inner wall surface of the housing 121 and is arranged around the winding assembly 112. In this way, after the winding assembly 112 is energized, a magnetic field is generated near the winding assembly 112, and a magnetic field is also generated near the permanent magnet 122.

[0269] The magnetic field generated by the winding assembly 112 interacts with the magnetic field generated by the permanent magnet 122 to generate an axial force on the housing 121 along the center rod 111, thereby pushing the center rod 111 and the housing 121 to move relative to each other along the axial direction of the center rod 111, so that the moving assembly 12 and the fixed assembly 11 move relative to each other along the axial direction of the center rod 111. And the direction of the interaction force between the center rod 111 and the housing 121 can be controlled by changing the flow direction of the current in the winding assembly 112, so as to adjust the direction of the relative movement of the fixed assembly 11 and the moving assembly 12.

[0270] It should be noted that the axial direction of the center rod 111 is consistent with the first direction, that is, the axial direction of the center rod 111 is consistent with the height direction of the vehicle 1000. The direction of relative movement between the fixed component 11 and the moving component 12 is along the axial direction of the center rod 111.

[0271] For some examples, see Figure 7 , Figure 7 for Figure 6The structure diagram at P1 is enlarged. The winding assembly 112 includes a plurality of iron cores 1121 and a coil 1122. The plurality of iron cores 1121 are arranged along the axial direction of the center rod 111, and a receiving groove 1123 is formed between two adjacent iron cores 1121. The coil 1122 is received in the receiving groove 1123.

[0272] When the coil 1122 is energized, a magnetic field is generated, which is the magnetic field of the winding assembly 112. The iron core 1121 is used to support the coil 1122 and conduct the magnetic lines of force of the magnetic field generated by the coil 1122 to enhance the strength of the magnetic field.

[0273] In some examples, there are multiple coils 1122. The multiple iron cores 1121 may form multiple receiving grooves 1123. The multiple receiving grooves 1123 are arranged at intervals along the axial direction of the central rod 111, and one coil 1122 is arranged in one receiving groove 1123.

[0274] In some examples, the plurality of coils 1122 may be divided into a plurality of groups, each group of coils 1122 having three coils 1122, and the conductors of the three coils 1122 in each group of coils 1122 may be fed with alternating currents of different phases, that is, the coils 1122 include three-phase conductors.

[0275] The coil 1122 and the permanent magnet 122 interact with each other to make the suspension system 300 generate thrust on the vehicle body 100. In the process of adjusting the distance between the vehicle body 100 and the wheel 200, the coil 1122 will continuously generate heat, and the heat will accumulate in the housing 121, causing the temperature of the permanent magnet 122 to continue to rise. If the temperature of the permanent magnet 122 exceeds the demagnetization temperature of the permanent magnet 122, the coil 1122 and the permanent magnet 122 will not be able to generate thrust on the vehicle body 100, thereby affecting the performance of the suspension system 300.

[0276] In addition, the vehicle 1000 may encounter some common driving conditions during daily driving, such as passing speed bumps, passing manhole covers, turning and tilting, S-bends on mountain roads, and undulating roads. In the driving conditions including but not limited to the above, the suspension system 300 needs to apply different thrusts to the vehicle body 100 to ensure the stability of the vehicle body 100. For example, when passing an undulating road with a small amplitude, the suspension system 300 only needs to apply a small thrust to the vehicle body 100 to ensure the stability of the vehicle body 100. When passing speed bumps and S-bends on mountain roads, the vehicle 1000 may shake more greatly. At this time, the suspension system 300 needs to apply a large thrust to the vehicle body 100 to ensure the stability of the vehicle body 100.

[0277] The greater the thrust applied by the suspension system 300 to the vehicle body 100, the greater the current supplied to the coil 1122, the faster the coil 1122 heats up, and the faster the permanent magnet 122 heats up, which may cause the permanent magnet 122 to reach the demagnetization temperature in a very short time. If the permanent magnet 122 is demagnetized, the electromagnetic performance of the motor will decay, resulting in insufficient electromagnetic thrust of the suspension system 300 under a given current. During the time from when the suspension system 300 applies thrust to the vehicle body 100 to when the suspension system 300 loses thrust, the vehicle 1000 may not have left the current driving condition, so that it is impossible to ensure that the vehicle body 100 is always in the expected stable state, thereby affecting the driving stability, comfort and handling of the vehicle 1000.

[0278] If the suspension system 300 has no cooling means, the maximum thrust applied by the suspension system 300 to the vehicle body 100 reaches 2000 N, which will cause the temperature of the permanent magnet 122 to approach the demagnetization temperature. If the maximum thrust applied by the suspension system 300 to the vehicle body 100 exceeds 2000 N, the temperature of the permanent magnet 122 will rise rapidly and demagnetize, causing the thrust applied by the suspension system 300 to the vehicle body 100 to be unable to be maintained, and this process usually does not exceed 0.3 s.

[0279] That is, if the suspension system 300 has no cooling means, the maximum thrust applied by the suspension system 300 to the vehicle body 100 is not enough to support a relatively bad working condition (i.e., a condition requiring a large thrust, such as a thrust exceeding 2000N), and if a thrust exceeding 2000N is applied to the vehicle body under a relatively bad working condition, it is not enough to support the current working condition, and will still affect the driving stability, comfort and handling of the vehicle 1000. Therefore, to continuously ensure the stability of the vehicle 1000, it is necessary to ensure that the thrust applied by the suspension to the vehicle body 100 is large enough and can maintain the duration of the current thrust.

[0280] However, the suspension system 300 in the related art cannot provide a high thrust to the vehicle body 100 or cannot maintain the high thrust for a long period of time due to the serious heating of the winding component 112, which will cause the vehicle 1000 to be unable to maintain the stability of the vehicle body 100 under some harsh or extreme conditions, affecting the functionality of the suspension system 300.

[0281] Based on this, in some embodiments of the present application, the motor 1 is provided with a cooling channel 14, and the cooling channel 14 is used to cool the winding assembly 112 by controlling the temperature and / or flow rate of the cooling medium in the cooling channel 14, so that the temperature of the permanent magnet 122 corresponding to the net heat generation of the motor 1 under different vehicle working conditions does not exceed the demagnetization temperature of the permanent magnet 122. The net heat generation is the heat generation of the winding assembly 112 under a given current minus the heat taken away by the cooling medium.

[0282] By providing the cooling channel 14, when the motor 1 continuously works at different thrusts, the cooling medium flowing in the cooling channel 14 can exchange heat with the winding assembly 112, thereby taking away the heat generated during the operation of the winding assembly 112 and the heat generated by the operation of other components of the motor 1 (for example, the heat generated by friction when the fixed assembly 11 and the moving assembly 12 move relative to each other). That is, the cooling medium flowing in the cooling channel 14 can take away part of the heat, while another part of the heat (i.e., the net heat generation) is still gathered in the housing 121. However, during the time when the motor 1 continuously works, the temperature of the permanent magnet 122 under the other part of the heat (i.e., the net heat generation) will not exceed the demagnetization temperature of the permanent magnet 122.

[0283] In this way, the permanent magnet 122 can be prevented from heating up too quickly, so that the permanent magnet 122 can cooperate with the winding assembly 112 and last for a long time, so that the motor 1 can at least provide the required thrust corresponding to the current working condition, and run at least the target time under the required thrust, increase the function of the suspension system 300, so that the suspension system 300 can generate enough thrust for the vehicle body 100 under different working conditions of the vehicle 1000, and can last for a sufficient time under the thrust, so as to improve the driving stability of the vehicle 1000. In addition, the motor 1 can stop working after it lasts for a sufficient time under different thrusts, so as to avoid overheating of the motor 1 due to continuous operation for too long, so as to avoid damage to the motor 1.

[0284] It should be noted that the thrust generated by the motor 1 on the vehicle body 100 is a linear thrust. Specifically, since the direction of relative movement between the fixed component 11 and the moving component 12 is the axial direction of the center rod 111, the thrust generated by the motor 1 on the vehicle body 100 is also along the axial direction of the center rod 111, that is, the height direction of the vehicle 1000.

[0285] In some embodiments, see Figure 6 and Figure 8 , Figure 8 for Figure 6 The schematic diagram of the structure of the center rod 111 in the motor 1 is shown, and the center rod 111 includes a first rod segment 111A and a second rod segment 111B. The second rod segment 111B is located in the housing 121, and the first rod segment 111A is penetrated through the second mounting hole 1211 on the housing 121 and can slide in the second mounting hole 1211. Part of the first rod segment 111A is located outside the housing 121, and the upper support assembly 2 is connected to the first rod segment 111A. The winding assembly 112 is connected to the second rod segment 111B and is arranged around the second rod segment 111B.

[0286] See also Figure 6 and Fig. 9 , Fig. 9 for Figure 8The schematic diagram of the half-section structure of the center rod 111 is shown. The cooling channel 14 is arranged in the center rod 111. Along the radial direction of the center rod 111, at least part of the cooling channel 14 overlaps with the winding assembly 112.

[0287] By setting a cooling channel 14 in the center rod 111, when the motor 1 continues to work at different thrusts, the cooling medium flowing in the cooling channel 14 can exchange heat with the winding assembly 112, thereby taking away the heat generated during the operation of the winding assembly 112, so as to avoid the permanent magnet 122 from heating up too quickly, so that the temperature of the permanent magnet 122 will not exceed the demagnetization temperature during the continuous operation of the motor 1, so as to ensure that the motor 1 can last for a longer time under different thrusts, thereby increasing the function of the suspension system 300.

[0288] In some embodiments, the projection of the cooling channel 14 in the radial direction of the center rod 111 is a first projection, and along the axial direction of the center rod 111, the length of the first projection is not less than the length of the winding assembly 112. In this way, the cooling channel 14 is longer, which enables the cooling medium to flow in the cooling channel 14 for a longer path and a longer time, thereby fully exchanging heat with the winding assembly 112 to improve the heat dissipation effect of the winding assembly 112, thereby ensuring that the motor 1 can provide a larger thrust and can last for a longer time under different thrusts.

[0289] In some examples, the cooling channel 14 extends along the axial direction of the central rod 111. In other examples, the cooling channel 14 is arranged in a spiral shape around the central rod 111. In still other examples, the cooling channel 14 can also be arranged in a wave shape.

[0290] In some embodiments, the projection of the winding assembly 112 in the radial direction of the center rod 111 is the second projection. The length of the overlapping portion of the first projection and the second projection in the radial direction of the center rod 111 along the axial direction of the center rod 111 is the overlapping length. The overlapping length is equal to the length of the second projection in the axial direction of the center rod 111. In other words, the two ends of the first projection in the axial direction of the center rod 111 are respectively located on both sides of the winding assembly 112 in the axial direction of the center rod 111.

[0291] In this way, in the axial direction of the center rod 111, the cooling medium can exchange heat with the entire winding assembly 112 while flowing in the cooling channel 14, thereby increasing the heat exchange area between the cooling medium and the center rod 111, so as to improve the heat dissipation effect of the winding assembly 112, and ensure that the motor 1 can provide a larger thrust and can last for a longer time under different thrusts.

[0292] In some embodiments, the maximum continuous working time of the motor 1 decreases as the overlap length decreases. That is, along the radial direction of the center rod 111, the less the first projection of the cooling channel 14 overlaps with the second projection of the winding assembly 112, the smaller the heat exchange area between the cooling medium and the winding assembly 112, the lower the heat exchange efficiency, and thus the shorter the maximum continuous working time of the motor 1.

[0293] On the contrary, along the radial direction of the center rod 111, the more the first projection of the cooling channel 14 overlaps with the second projection of the winding assembly 112, the larger the heat exchange area between the cooling medium and the winding assembly 112, and the higher the heat exchange efficiency, which will result in a longer maximum continuous working time of the motor 1.

[0294] Therefore, the overlapping length of the first projection and the second projection in the radial direction of the center rod 111 can be set according to actual needs, so that the heat exchange capacity of the cooling medium and the winding assembly 112 can meet the thrust requirement of the motor 1.

[0295] In some embodiments, see Fig. 9 , Fig.10 and Fig.11 , Fig.10 for Figure 8 Schematic diagram of the CC section structure. Fig.11 for Figure 8 Schematic diagram of the structure of the middle DD section. The cooling channel 14 includes an inlet channel 141, an outlet channel 142 and a confluence channel 143. The inlet channel 141 extends from a side surface of the first rod segment 111A facing away from the second rod segment 111B to an end of the second rod segment 111B facing away from the first rod segment 111A. The outlet channel 142 extends from a side surface of the first rod segment 111A facing away from the second rod segment 111B to an end of the second rod segment 111B facing away from the first rod segment 111A. The confluence channel 143 is provided at an end of the second rod segment 111B facing away from the first rod segment 111A, and connects the inlet channel 141 and the outlet channel 142.

[0296] In this way, the cooling medium enters the confluent channel 143 from the inlet channel 141, then enters the outlet channel 142 from the confluent channel 143, and finally flows out from the outlet channel 142. Since the winding assembly 112 is arranged on the second rod segment 111B, the cooling medium can exchange heat with the entire winding assembly 112 in the axial direction of the central rod 111 during the flow of the cooling medium in the inlet channel 141 and the outlet channel 142, thereby improving the heat exchange efficiency between the cooling medium and the winding assembly 112.

[0297] In some embodiments, there are multiple water inlet channels 141. The multiple water inlet channels 141 are arranged at intervals along the circumference of the center rod 111. In this way, the cooling medium in the multiple water inlet channels 141 can exchange heat with the winding assembly 112, thereby further increasing the heat exchange area between the cooling medium and the winding assembly 112 and improving the heat exchange efficiency.

[0298] In some embodiments, there are multiple water outlet channels 142. Multiple water outlet channels 142 are arranged at intervals along the circumference of the center rod 111. In this way, the cooling medium in the multiple water outlet channels 142 can exchange heat with the winding assembly 112, thereby further increasing the heat exchange area between the cooling medium and the winding assembly 112 and improving the heat exchange efficiency.

[0299] In some embodiments, please refer to Fig.11 The confluent channel 143 extends along the circumference of the center rod 111. In this way, the cooling medium in the multiple water inlet channels 141 can be conveniently merged in the confluent channel 143, and then flow out into the water outlet channel 142. It is also convenient for the cooling medium in the confluent channel 143 to be dispersed into the multiple water outlet channels 142 and flow out.

[0300] In some embodiments, under different operating conditions of the vehicle 1000, the thrust provided by the motor 1 to the vehicle body 100 is not less than the required thrust corresponding to the current operating condition, and under the required thrust corresponding to the current operating condition, the maximum continuous working time of the motor 1 is not less than the target time, the target time is the shortest time the motor 1 continues to work at the required thrust corresponding to the current operating condition to complete the current operating condition, the maximum continuous working time of the motor 1 is the maximum time the temperature of the permanent magnet 122 corresponding to the net heat generated by the motor 1 continuously working under the required thrust corresponding to the current operating condition is maintained at a temperature not exceeding the demagnetization temperature of the permanent magnet 122, wherein the thrust provided by the motor 1 to the vehicle body 100 increases as the impact of the road surface on the vehicle body 100 increases.

[0301] The thrust provided by the motor 1 to the vehicle body 100 is not less than the required thrust corresponding to the current operating condition, and under the required thrust corresponding to the current operating condition, the maximum continuous working time of the motor 1 is not less than the target time, that is, the thrust provided by the motor 1 to the vehicle body 100 can meet the thrust required for the current operating condition, and in the process of the vehicle 1000 completing the current operating condition, the temperature of the permanent magnet 122 corresponding to the net heat generation of the motor 1 is always lower than the demagnetization temperature of the permanent magnet 122, so the permanent magnet 122 will not be demagnetized, so that the motor 1 can continue to maintain the thrust until the vehicle completes the current operating condition.

[0302] In addition, under the current working condition, the thrust provided by the motor 1 to the vehicle body 100 increases as the impact degree of the road on the vehicle body 100 increases. That is to say, as the impact force of the road on the vehicle body increases, the thrust provided by the motor 1 to the vehicle body also increases accordingly to meet the thrust requirements of the vehicle body under the corresponding impact force, so that the vehicle body can still remain stable under the corresponding impact force. And because the maximum duration of continuous operation of the motor 1 is not less than the target duration, the thrust provided by the motor 1 to the vehicle body can also meet the disappearance of the corresponding impact force on the vehicle body, thereby ensuring that the motor 1 can continue to maintain the stability of the vehicle body when the impact degree of the road on the vehicle body 100 is constantly changing, thereby improving the driving experience of the vehicle.

[0303] In some embodiments, when the vehicle is in a first operating condition, the thrust of the motor is not less than a first threshold value F1, and the duration of continuous operation of the motor is not less than T1, and the first threshold values ​​F1 and T1 are used to reduce the degree of impact received by the vehicle when it is in the first operating condition, wherein the first operating condition includes a condition in which the vehicle passes through an undulating road surface.

[0304] When the vehicle is in the second operating condition, the thrust of the motor is not less than the second threshold value F2, and the motor continues to work for a period of not less than T2. ​​The second threshold values ​​F2 and T2 are used to reduce the degree of roll when the vehicle is in the second operating condition, wherein the second operating condition includes a condition in which the vehicle is turning.

[0305] When the vehicle is in the third operating condition, the thrust of the motor is not less than the third threshold value F3, and the duration of continuous operation of the motor is not less than T3. The third threshold values ​​F3 and T3 are used to reduce the pitch degree of the vehicle along the X direction when the vehicle is in the third operating condition, wherein the third operating condition includes the vehicle start-stop condition.

[0306] Among them, F1>F2>F3, T1<T2<T3.

[0307] Specifically, when the vehicle 1000 is in the first working condition, the thrust of the motor 1 is not less than the first threshold value F1, and the duration of continuous operation of the motor 1 is not less than T1. When the vehicle 1000 is in the second working condition, the thrust of the motor 1 is not less than the second threshold value F2, and the duration of continuous operation of the motor 1 is not less than T2. ​​When the vehicle 1000 is in the third working condition, the thrust of the motor 1 is not less than the third threshold value F3, and the duration of continuous operation of the motor 1 is not less than T3. When the vehicle 1000 is in the fourth working condition, the thrust of the motor 1 is not less than the fourth threshold value F4, and the duration of continuous operation of the motor 1 is not less than T4; the road condition of the fourth working condition is better than that of the third working condition. Among them, F1>F2>F3>F4, T1<T2<T3<T4.

[0308] It should be noted that the road conditions in the first working condition have a greater impact on the wheels, which is mainly manifested in the Z-direction impact on the vehicle body 100, such as the step-type road impact caused by conditions such as passing speed bumps and manhole covers. At this time, the motor 1 of the suspension needs to apply a large active thrust to the vehicle body 100 to overcome the step-type acceleration movement trend of the unsprung mass caused by the impact of this working condition. And each time the motor 1 works, the duration of continuous work of the motor 1 to generate thrust on the vehicle body 100 is shorter than that of other working conditions. Exemplarily, F1 = 6000N. T1 = 5s. That is to say, under the first working condition, the thrust generated by the motor 1 on the vehicle body 100 is not less than 6000N, and the thrust value will increase significantly with the increase of the amplitude of the step-type obstacle on the road surface and the increase of the vehicle speed. For example, when the vehicle 1000 passes through speed bumps with heights of 3cm, 4cm, 5cm, and 6cm at 20km / h, the required active thrust will increase with the increase of the speed bump height. For example, the thrust may be 6000N, 6100N, 6200N, 6300N, 6400N, 6500N, etc. If a continuous speed bump condition is encountered, the motor 1 will continue to operate under the thrust F1 for no less than 5s, for example, the duration may be 5s, 6s, 7s, 8s, 9s, 10s, etc., until the vehicle 1000 leaves the current condition.

[0309] The road conditions in the second working condition have a smaller impact on the wheels, which is mainly manifested in the impact on the Y direction of the vehicle body, such as the intersection turn of the urban road, the S-bend of the mountain road of the national highway, etc. When the vehicle 1000 is traveling in the second working condition, without active control, the vehicle body 100 will have obvious roll. At this time, the motor 1 of the suspension system 300 needs to generate thrust on the vehicle body 100 to suppress the roll of the vehicle body 100, control the roll angle of the vehicle body 100 in this working condition within the target value range, and ensure the stability of the vehicle body 100. At this time, the motor 1 needs to provide a large thrust to the vehicle 1000 to ensure the stability of the vehicle body 100. The specific thrust size needs to be determined according to the total mass of the vehicle, the turning radius in this working condition, the current driving speed and the roll angle control target value. For example, under the conditions of the total mass of the vehicle of about 3000kg, the turning radius of 20 meters, and the speed of 60km / h, the vehicle 1000 makes a fixed circle turn, F2=4000N. T2=5min. That is to say, under the second working condition, the thrust generated by the motor 1 on the vehicle body 100 is not less than 4000N, and the thrust value will increase significantly with the decrease of the turning radius and the increase of the vehicle speed. For example, the thrust can be 4000N, 4100N, 4200N, 4300N, 4400N, 4500N, 5000N, etc. And the duration of the motor 1 under the thrust F2 is not less than 5 minutes, for example, the duration can be 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, 10 minutes, etc. Exemplarily, F2 < 6000N.

[0310] The road conditions in the third working condition have less impact on the wheels, which is mainly manifested in the impact on the Z direction of the vehicle body, such as the undulating road surface on the expressway or national highway, the pitch of the vehicle 1000 when starting or braking, etc. When the vehicle 1000 is traveling in the third working condition, without active control, the vehicle body 100 will jump up and down significantly. At this time, the motor 1 of the suspension system 300 needs to generate thrust on the vehicle body 100 to reduce the shaking of the vehicle body 100, thereby keeping the vehicle body 100 stable. Compared with the first and second working conditions, the shaking amplitude of the vehicle body 100 in this working condition is smaller, and the thrust required is also relatively small. The winding assembly 112 generates relatively less heat, and the duration of the thrust will also be shorter. Exemplarily, F3 = 1500N. T3 = 15min. That is, under the third working condition, the thrust generated by the motor 1 on the vehicle body 100 is not less than 1500N, for example, the thrust may be 1500N, 1600N, 1700N, 1800N, 1900N, 2000N, etc. And the duration of the motor 1 under the thrust F3 is not less than 15min, for example, the duration may be 15min, 16min, 17min, 18min, 19min, 20min, etc. Exemplarily, F3<4000N.

[0311] The impact of the road conditions in the fourth working condition on the wheels is not obvious, and it is mainly manifested in the impact on the Z direction of the vehicle body, such as the relatively flat sections of urban roads, expressways, national highways, expressways and other sections. This working condition accounts for the main part of the driving conditions of the vehicle 1000. When the vehicle 1000 is driving in the fourth working condition, without active control, the up and down jumping of the vehicle body 100 in the Z direction is not obvious. The road surface undulation height of the fourth working condition is less than that of the third working condition. The amplitude of the shaking of the vehicle 1000 when driving is also less than the amplitude of the shaking when it is on the road surface of the third working condition. At this time, the vehicle body 100 requires less thrust. The winding assembly 112 generates less heat, and the temperature of the permanent magnet 122 basically does not exceed the demagnetization temperature, so the motor 1 can continue to work. Exemplarily, F4=0N, T4=30min. That is to say, under the condition of suppressing the roll of the vehicle body 100, the thrust generated by the motor 1 on the vehicle body 100 is not less than 0N, for example, the thrust may be 10N, 50N, 100N, 200N, 300N, 400N, etc. And the duration of the motor 1 under the thrust F4 is not less than 30min, for example, the duration may be 35min, 36min, 37min, 38min, 39min, 40min, etc. Exemplarily, F4<1500N. The motor 1 can work all the time.

[0312] In some embodiments, the relationship between the net heat generated by the motor 1, the heat generated by the motor 1 and the heat removed by the cooling medium is:

[0313]

[0314] in, E is the net heat generated by motor 1, E g is the heat generated by motor 1, q c is the heat taken away by the cooling medium, ρ is the density of the cooling medium, v is the volume of the cooling channel 14, c is the specific heat capacity of the cooling medium, T is the temperature of the motor 1, t is the cooling time, T ∞ is the temperature of the cooling medium, and R is the thermal resistance of the motor 1.

[0315] Through the above formula, it can be known that when the volume of the cooling channel 14 is constant, the relationship between the temperature and cooling time of the motor 1 when different cooling media are used for cooling. In this way, the flow rate and / or temperature of the cooling medium can be controlled according to the relationship between the temperature and cooling time of the motor 1, so that the cooling rate of the cooling medium is greater than the heating rate of the motor 1, so as to ensure that the net heat generation of the motor 1 is small, thereby preventing the temperature of the permanent magnet 122 from exceeding the demagnetization temperature, so as to ensure that the motor 1 can have a large thrust and can last for a long time under different thrusts.

[0316] In some embodiments, see Fig.12 , Fig.12 The relationship between the thrust of motor 1 and the maximum continuous working time of motor 1 is as follows:

[0317] y=kx n

[0318] Wherein, y is the maximum duration of continuous operation of motor 1, x is the thrust of motor 1, k and n are constants, k is a positive number, and n is a negative number.

[0319] That is to say, there is a negative exponential relationship between the maximum continuous working time of the motor 1 and the thrust of the motor 1. The greater the thrust, the smaller the maximum continuous working time of the motor 1. In this way, the continuous working time of the motor 1 under different thrusts can have different upper limits, so that the motor 1 stops working when the continuous working time reaches the upper limit, so as to avoid overheating of the motor 1 due to long-term continuous operation, thereby avoiding damage to the motor 1.

[0320] Furthermore, the duration of continuous operation of the motor 1 under different thrusts also has a lower limit value, and the duration of continuous operation of the motor 1 under different thrusts exceeds the lower limit value, so that the motor 1 can meet the needs of the vehicle 1000 under different working conditions. Thus, the motor 1 can take into account a variety of working conditions and will not be damaged due to overheating.

[0321] In some embodiments, along the radial direction of the center rod 111, the projection of the cooling channel 14 is the first projection, and the projection of the winding assembly 112 is the second projection. The length of the overlapping portion of the first projection and the second projection in the radial direction of the center rod 111 along the axial direction of the center rod 111 is the overlapping length. k decreases as the overlapping length decreases, and n decreases as the overlapping length decreases. Conversely, k increases as the overlapping length increases, and n increases as the overlapping length increases.

[0322] It should be noted that different thrusts provided by the motor 1 to the vehicle body 100 correspond to different heat generation. That is, the thrust of the motor 1 is directly related to the heat generation of the motor 1 and the current of the winding assembly 112. Specifically: F=KI, Q=I*IRT. Among them, F is the thrust, I is the current, K is the current constant; Q is the heat generation, R is the thermal resistance of the motor 1, and T is the temperature of the motor 1. It can be seen that the thrust of the motor 1 is positively correlated with the current, and the heat generation is also positively correlated with the current, that is, the greater the thrust of the motor 1, the greater the current required, and the greater the heat generation of the motor 1.

[0323] As the overlap length decreases, the heat exchange area between the cooling medium and the winding assembly 112 decreases, resulting in a decrease in heat exchange efficiency. Therefore, by decreasing k as the overlap length decreases, and decreasing n as the overlap length decreases, the maximum duration of continuous operation of the motor 1 under different thrusts can have a more reasonable value, thereby preventing the motor 1 from being damaged due to continuous operation for too long under a large heat generation.

[0324] In some embodiments of the present application, in order to reduce the heat generation of the winding assembly 112, the coil 1122 may include a three-phase conductor, and the cross-sectional area of ​​each phase conductor is greater than or equal to 2.5 square millimeters and less than or equal to 3.5 square millimeters. For example, the cross-sectional area of ​​each phase conductor may be 2.5 square millimeters, 2.8 square millimeters, 3.0 square millimeters, 3.2 square millimeters, 3.4 square millimeters, 3.5 square millimeters, etc., wherein the cross-sectional area is a cross-sectional area perpendicular to the length direction of the conductor.

[0325] The length of each phase conductor is not less than a first length, and the first length is greater than or equal to 28 meters and less than or equal to 42 meters. For example, the length of each phase conductor can be 28 meters, 30 meters, 32 meters, 34 meters, 36 meters, 38 meters, 40 meters, 42 meters, etc.

[0326] By controlling the cross-sectional area and length of each phase conductor of the coil 1122 within the above range, the thickness and length of the conductor can be within an appropriate range to ensure that the winding assembly 112 can operate normally and generate relatively less heat, so as to improve the heat dissipation efficiency of the motor 1, thereby further avoiding the permanent magnet 122 from heating up too quickly, so as to further enable the motor 1 to provide greater thrust and be able to last for a longer period of time under different thrusts.

[0327] In some embodiments, the resistance of each phase conductor is no greater than 0.5 ohms. For example, the resistance of each phase conductor may be 0.2 ohms, 0.25 ohms, 0.3 ohms, 0.35 ohms, 0.4 ohms, 0.45 ohms, 0.5 ohms, and the like.

[0328] The resistance of each phase conductor is no more than 0.5 ohms, so that the resistance of each phase conductor can be smaller, thereby further reducing the heat generated by the winding assembly 112, so as to further enable the motor 1 to provide greater thrust and last longer under different thrusts.

[0329] In some embodiments of the present application, the motor 1 is used as a power element and also as an actuator, that is, the motor 1 is used to provide power to the suspension system 300 and also to adjust the distance between the vehicle body 100 and the wheel 200 .

[0330] Specifically, in some embodiments, the moving component 12 is formed as an actuator, and the moving component 12 and the fixed component 11 cooperate to form a power component.

[0331] In some examples, the housing 121 and the lower fork arm 13 are formed as actuators, and the permanent magnet 122 and the winding assembly 112 are formed as power elements. That is, the permanent magnet 122 and the winding assembly 112 cooperate to provide power to the housing 121 and the lower fork arm 13, thereby providing power to the suspension system 300, so that the housing 121 and the lower fork arm 13 act as actuators of the suspension system 300 to push the vehicle body 100 to move relative to the wheel 200, thereby adjusting the distance between the vehicle body 100 and the wheel 200.

[0332] In this way, the housing 121 and the lower fork arm 13 are used as components of the motor 1 to support the permanent magnet 122 and the fixing assembly 11, and are also used as components of the suspension system 300 for adjusting the distance between the wheel 200 and the vehicle body 100, which can reduce the number of components of the suspension system 300. Compared with the suspension system 300 that adjusts the distance between the wheel 200 and the vehicle body 100 through the primary and secondary transmission, the motor 1 is used as both a power element and an actuator, which can reduce the thrust transmission path and reduce the energy loss caused by the intermediate transmission efficiency, so that the motor 1 can provide a larger thrust.

[0333] Furthermore, the suspension system 300 has fewer parts, so that the suspension system 300 occupies less space, which is beneficial to reducing the unsprung mass and wasted work, thereby reducing thrust loss and improving thrust control accuracy.

[0334] It should be noted that the traditional primary and secondary transmission suspension system 300 usually transmits power to the suspension arm through the connecting rod structure via the motor 1, then transmits it to the spring, and finally transmits it to the vehicle body 100. This results in a longer power transmission path of the motor 1, which easily causes a large thrust loss.

[0335] In some other examples, the motor 1 provided in the present application may also be used in a suspension system 300 such as a McPherson suspension, a double wishbone suspension, or a five-link suspension.

[0336] In some embodiments, the matching gap between the moving component 12 and the fixed component 11 is formed as an electromagnetic gap. Exemplarily, the permanent magnet 122 is arranged around the winding component 112, and there is a gap between the permanent magnet 122 and the winding component 112, and the gap is an electromagnetic gap. By setting the electromagnetic gap, the magnetic field of the permanent magnet 122 can better interact with the magnetic field of the winding component 112, so that the motor 1 can generate sufficient thrust on the vehicle body 100.

[0337] In some embodiments of the present application, in order to detect the relative displacement of the fixed component 11 and the moving component 12, so as to accurately adjust the distance between the vehicle body 100 and the wheel 200, please refer to Fig.13 and Fig.14 , Fig.13 for Figure 5 The schematic diagram of the positional relationship between the sensor and the center rod 111 in the motor 1 is shown. Fig.14 for Fig.13 The enlarged schematic diagram of the structure at P2 in the figure. The motor 1 also includes a sensor 15. The sensor 15 is used to detect the relative displacement between the fixed component 11 and the moving component 12. The sensor 15 includes a reader 151 and a magnetic stripe 152. One of the reader 151 and the magnetic stripe 152 is provided at the moving component 12, and the other of the reader 151 and the magnetic stripe 152 is provided at the fixed component 11. The reader 151 can sense the magnetic field signal of the magnetic stripe 152 to detect the relative displacement between the fixed component 11 and the moving component 12.

[0338] This application is exemplified by arranging the reader 151 on the moving component 12 and the magnetic strip 152 on the fixed component 11 .

[0339] In some embodiments, the reader 151 is connected to the housing 121. Exemplarily, the reader 151 can be connected to the surface where the housing 121 and the center rod 111 match. That is, the reader 151 is connected to the outer surface of the top wall of the housing 121, and the top wall of the housing 121 is the side wall of the housing 121 facing away from the wheel 200. Since the winding assembly 112 and other components of the motor 1 will generate heat during the operation of the motor 1, and the generated heat will be accumulated in the housing 121, therefore, connecting the reader 151 to the surface where the housing 121 and the center rod 111 match can avoid the reader 151 being in a high temperature environment, thereby avoiding the reader 151 from being overheated and affecting its working performance. In addition, the reader 151 is arranged on the surface where the housing 121 and the center rod 111 match, and the flow of external air can also be used to naturally dissipate the heat of the reader 151, so as to reduce the temperature of the reader 151.

[0340] In some embodiments, the magnetic stripe 152 is connected to the center rod 111. Exemplarily, the magnetic stripe 152 is disposed on the first rod segment 111A of the center rod 111. The sensing surface of the reader 151 faces the magnetic stripe 152. By reading the magnetic field signals at different positions on the magnetic stripe 152 through the sensing surface of the reader 151, the relative displacement of the fixed component 11 and the moving component 12 can be detected.

[0341] For some examples, see Fig.15 , Fig.15 for Fig.13 The schematic diagram of the positional relationship between the center rod 111 and the magnetic strip 152 in the motor 1 is shown. The center rod 111 is provided with a mounting groove 111C, and the magnetic strip 152 is arranged in the mounting groove 111C. Exemplarily, the mounting groove 111C is arranged on the outer peripheral surface of the first rod segment 111A of the center rod 111.

[0342] In this way, the magnetic strip 152 can be limited by the installation groove 111C to prevent the magnetic strip 152 from deviating downward or falling off under its own gravity, so that the magnetic strip 152 can be more stably connected to the center rod 111, thereby improving the stability of the cooperation between the reader 151 and the magnetic strip 152, thereby improving the detection accuracy of the sensor 15.

[0343] In some examples, the sensor 15 further includes a back plate 153. The back plate 153 is disposed in the mounting groove 111C, and the magnetic strip 152 is disposed on a side surface of the back plate 153 facing the reader 151. That is, both the back plate 153 and the magnetic strip 152 are disposed in the mounting groove 111C. The back plate 153 is limited by the mounting groove 111C, thereby limiting the magnetic strip 152. The back plate 153 can also support and fix the magnetic strip 152 to further improve the stability of the magnetic strip 152 on the center rod 111, thereby further improving the detection accuracy of the sensor 15.

[0344] In some examples, the magnetic strip 152 can be bonded to the back plate 153. In other examples, the magnetic strip 152 and the back plate 153 are detachably connected. For example, the magnetic strip 152 and the back plate 153 are snap-fitted or bolted, etc. In this way, it is convenient to remove the magnetic strip 152 from the back plate 153, so as to facilitate replacement or repair of the magnetic strip 152.

[0345] In some examples, the back plate 153 may be connected to the center rod 111 by bonding, snapping, screwing, or the like.

[0346] In other examples, at least a portion of the back plate 153 is interference fit with the inner wall surface of the installation slot 111C, that is, the back plate 153 may be interference fit with the inner wall surface of the installation slot 111C as a whole or partially.

[0347] Exemplarily, a portion of the back plate 153 is interference fit with the inner wall surface of the mounting groove 111C. In this way, when installing the back plate 153 in the mounting groove 111C, it is not necessary to use a lot of force, so that the installation of the back plate 153 can be facilitated, and after the back plate 153 is installed in the mounting groove 111C, only a portion of the back plate 153 is subjected to the squeezing force of the inner wall surface of the mounting groove 111C, so that the squeezing force on the back plate 153 can be reduced, so as to avoid deformation and damage of the back plate 153, improve the supporting effect of the back plate 153 on the magnetic strip 152, and improve the detection accuracy of the sensor 15.

[0348] For example, the two side surfaces of the back plate 153 along the direction perpendicular to the axial direction of the shell 121 are respectively abutted against the two inner wall surfaces of the mounting groove 111C in the direction perpendicular to the axial direction of the center rod 111, and the two side surfaces of the back plate 153 along the axial direction of the shell 121 are respectively spaced from the two inner wall surfaces of the mounting groove 111C in the axial direction of the center rod 111.

[0349] For example, see Fig.16 , Fig.16 for Fig.13 Schematic diagram of the connection relationship between the magnetic strip 152 and the back plate 153 in the motor 1 shown. The back plate 153 includes a main body 1531, a first matching portion 1532 and a second matching portion 1533. The magnetic strip 152 is connected to the main body 1531. The first matching portion 1532 and the second matching portion 1533 are respectively connected to the two ends of the main body 1531 in the second direction, and there is an interference fit between the first matching portion 1532 and the inner wall surface of the mounting groove 111C, and between the second matching portion 1533 and the inner wall surface of the mounting groove 111C. Among them, the second direction is perpendicular to the arrangement direction of the back plate 153 and the magnetic strip 152. For example, the second direction can be the radial direction of the center rod 111.

[0350] By setting the first matching part 1532 and the second matching part 1533, and making the first matching part 1532 and the inner wall surface of the installation groove 111C have an interference fit, and making the second matching part 1533 and the inner wall surface of the installation groove 111C have an interference fit, the interference fit between part of the back plate 153 and the center rod 111 is achieved, so as to facilitate the installation of the back plate 153 and the center rod 111.

[0351] The first matching portion 1532 and the second matching portion 1533 may be located at an end of the body portion 1531 facing the vehicle body 100, or at an end of the body portion 1531 facing away from the vehicle body 100. The locations of the first matching portion 1532 and the second matching portion 1533 are not limited herein.

[0352] In some examples, the first matching portion 1532 may be a protrusion protruding from the body portion 1531 . The second matching portion 1533 may also be a protrusion protruding from the body portion 1531 .

[0353] In some examples, the magnetic strip 152 may be a magnetic scale, and the reading head 151 may be a magnetic head. The magnetic scale and the magnetic head form a magnetic induction sensor 15. For details, please refer to Fig.17 , Fig.17 for Fig.13 Schematic diagram of the relationship between the reader 151 and the magnetic stripe 152 in the sensor 15. The magnetic scale includes a plurality of first magnetic poles 1521 and a plurality of second magnetic poles 1522. It should be noted that the polarities of the first magnetic poles 1521 and the second magnetic poles 1522 are different. For example, if the first magnetic pole 1521 is an N pole, the second magnetic pole 1522 is an S pole; if the first magnetic pole 1521 is an S pole, the second magnetic pole 1522 is an N pole.

[0354] Exemplarily, the first magnetic pole 1521 may be a powered coil 1122, an electromagnet, a magnet, a permanent magnet, etc. The second magnetic pole 1522 may be a powered coil 1122, an electromagnet, a magnet, a permanent magnet, etc.

[0355] A plurality of first magnetic poles 1521 and a plurality of second magnetic poles 1522 are alternately arranged along the axial direction of the center rod 111, that is, one second magnetic pole 1522 is arranged between any two adjacent first magnetic poles 1521, and one first magnetic pole 1521 is arranged between any two adjacent second magnetic poles 1522. Along the axial direction of the center rod 111, the size of the first magnetic pole 1521 is the same as the size of the second magnetic pole 1522.

[0356] When the center rod 111 and the shell 121 move relative to each other, the magnetic scale and the magnetic head will also move relative to each other. The magnetic head can detect the magnetic field strength at different positions on the magnetic scale and process the magnetic field strength to obtain a displacement signal, thereby detecting the relative displacement of the moving component 12 and the fixed component 11.

[0357] In some embodiments of the present application, in order to further ensure that the motor 1 can provide sufficient thrust to the vehicle body 100, the resistance of the suspension system 300 can be less than 150 N. For example, the resistance of the suspension system 300 can be 145 N, 140 N, 135 N, 130 N, 125 N, 120 N, 100 N, 90 N, 80 N, etc.

[0358] By controlling the resistance of the suspension system 300 within a smaller range, the energy loss caused by the system resistance during the operation of the motor 1 can be reduced, so that the motor 1 can use more energy to provide thrust to the vehicle body 100, thereby ensuring that the motor 1 can provide sufficient thrust to the vehicle body 100.

[0359] In some embodiments, please refer to Figure 6 , the motion assembly 12 further includes a guide rod 123. The center rod 111 and the guide rod 123 are nested and matched to form a guide assembly. Exemplarily, the center rod 111 is provided with a guide hole 111D extending along the axial direction of the center rod 111, and at least a portion of the guide rod 123 is located in the guide hole 111D. During the relative movement of the fixed assembly 11 and the motion assembly 12, the guide rod 123 can slide in the guide hole 111D relative to the center rod 111 to guide the fixed assembly 11 and the motion assembly 12. The axial direction of the guide rod 123 is consistent with the axial direction of the center rod 111.

[0360] The guide stiffness of the guide assembly is not less than 7767 N / mm. Exemplarily, the guide stiffness of the guide assembly can be 7767 N / mm, 7780 N / mm, 7800 N / mm, 7900 N / mm, 8000 N / mm, 8200 N / mm, 8500 N / mm, etc.

[0361] It should be noted that during the relative movement of the fixed component 11 and the moving component 12, the magnetic field of the permanent magnet 122 and the magnetic field of the winding component 112 will generate magnetic bias force on the fixed component 11 and the moving component 12. That is to say, the moving component 12 will be radially offset along the center rod 111 under the action of the magnetic bias force, thereby causing the guide rod 123 and the center rod 111 to be relatively eccentric, that is, the axes do not coincide.

[0362] The air gap tolerance between the fixed component 11 and the moving component 12 is usually 1-0.083mm. The basic eccentricity caused by this tolerance (i.e. the eccentricity caused by the processing error of the guide rod 123 and the center rod 111) is 0.097mm. Usually, the eccentricity of the motor 1 during operation is required to be between ±0.2mm, so the stiffness deformation of the guide component is required to be less than or equal to 0.103mm (i.e. 0.2mm-0.097mm). It is known that the corresponding magnetic bias force is 800N when the eccentricity is 0.2mm, so the guiding stiffness of the guide component is required to be greater than or equal to 7767N / mm (i.e. 800N divided by 0.103mm).

[0363] When the guiding stiffness of the guiding component is within the above range, it can be ensured that the guiding component has a large stiffness. During the relative movement of the fixed component 11 and the moving component 12, the guiding component is not easily deformed, thereby reducing the system resistance caused by the deformation of the guiding component and reducing the energy loss caused by the system resistance.

[0364] In some embodiments, the guide diameter of the guide rod 123 is not less than 23 mm. For example, the diameter of the guide rod 123 may be 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, etc. By setting the guide diameter of the guide rod 123 within the above range, the guide rod 123 may be prevented from being too thin and affecting the rigidity of the guide rod 123, so as to further prevent the guide rod 123 from being deformed and reduce the system resistance.

[0365] In some embodiments, the elastic modulus of the guide rod 123 and the elastic modulus of the center rod 111 are not less than 200 GPa. Exemplarily, the elastic modulus of the guide rod 123 can be 200 GPa, 210 GPa, 220 GPa, 230 GPa, 240 GPa, 250 GPa, 260 GPa, 270 GPa, 280 GPa, etc. The elastic modulus of the center rod 111 can be 200 GPa, 210 GPa, 220 GPa, 230 GPa, 240 GPa, 250 GPa, 260 GPa, 270 GPa, 280 GPa, etc.

[0366] By setting the elastic modulus of the guide rod 123 and the elastic modulus of the center rod 111 within the above range, the rigidity of the guide rod 123 and the center rod 111 can be further enhanced to reduce deformation of the guide rod 123 and the center rod 111 and reduce system resistance.

[0367] In some embodiments, see 6. Fig.18 and Fig.19 , Fig.18 for Figure 6 The schematic diagram of the structure of the guide rod 123 in the motor 1 is shown, Fig.19for Fig.18 The schematic diagram of the exploded structure of the guide rod 123 and the lower fork arm 13 is shown. The guide rod 123 includes a rod body 1231 and a base 1232. One end of the rod body 1231 is nested with the center rod 111, and the base 1232 is connected to the other end of the rod body 1231 and is detachably connected to the lower fork arm 13. Exemplarily, the base 1232 and the lower fork arm 13 can be connected by means of a snap connection, a screw connection, etc.

[0368] See also Fig. 20 , Fig. 20 for Fig.18 The front view of the guide rod 123 is shown in FIG. 1. Along the axial direction of the rod body 1231, the thickness of the base 1232 (eg Fig. 20 The thickness H1) shown in the figure is not less than 3 mm. For example, the thickness of the base 1232 can be 3 mm, 3.2 mm, 3.5 mm, 3.8 mm, 4 mm, 4.2 mm, 4.5 mm, 4.8 mm, 5 mm, etc. The thickness of the base 1232 refers to the maximum dimension of the base 1232 in the axial direction of the center rod 111.

[0369] By setting the thickness of the base 1232 within the above range, the base 1232 can provide better support for the rod body 1231 of the guide rod 123, so as to avoid deformation of the guide rod 123 due to insufficient support strength of the base 1232 for the rod body 1231, thereby avoiding excessive system resistance.

[0370] In addition, the detachable connection between the base 1232 and the lower fork arm 13 also facilitates the removal and installation of the guide rod 123. Moreover, the base 1232 and the lower fork arm 13 adopt a split structure, so that the guide rod 123 and the lower fork arm 13 can be made of different materials, for example, the guide rod 123 is made of a material with a relatively large structural strength, and the lower fork arm 13 is made of a material with a relatively small structural strength, so as to ensure the structural strength of the guide rod 123 while reducing the weight of the motor 1.

[0371] In some examples, the material of the guide rod 123 includes a first material, and the material of the lower fork arm 13 includes a second material. The density of the first material is not less than the density of the second material. That is, the guide rod 123 and the lower fork arm 13 can be made of the same material or different materials.

[0372] Exemplarily, the guide rod 123 and the lower fork arm 13 are both made of aluminum alloy. Another exemplary embodiment is that the guide rod 123 is made of carburized steel, and the lower fork arm 13 is made of aluminum alloy. The guide rod 123 and the lower fork arm 13 may also be made of other materials whose structural strength meets the requirements of the motor 1, which will not be described in detail here.

[0373] In some embodiments, see Fig.21 and Fig. 22 , Fig.21 for Figure 5 A schematic cross-sectional view of the motor 1 is shown. Fig. 22 for Fig.21 The motion assembly 12 further includes a bearing assembly 113. The bearing assembly 113 is disposed in the guide hole 111D and is located between the inner wall surface of the guide hole 111D and the guide rod 123.

[0374] See also Fig. 22 and Fig.23 , Fig.23 for Fig.21 Schematic diagram of the matching relationship between the bearing assembly 113 and the guide rod 123 in the motor 1. The bearing assembly 113 includes a cylindrical bearing seat 1131 and a plurality of balls 1132. The bearing seat 1131 is arranged in the guide hole 111D and fixed to the center rod 111. The plurality of balls 1132 are embedded in the bearing seat 1131 and can rotate relative to the bearing seat 1131. The guide rod 123 is inserted into the bearing seat 1131 and rollingly matched with the plurality of balls 1132.

[0375] By providing a plurality of balls 1132, during the relative movement between the guide rod 123 and the center rod 111, the plurality of balls 1132 of the bearing assembly 113 can roll on the peripheral surface of the guide rod 123 relative to the guide rod 123. In this way, compared with sliding friction, the friction between the guide rod 123 and the balls 1132 is relatively small, thereby reducing the system resistance of the motor 1 when it is working, thereby reducing the energy loss caused by the resistance.

[0376] In some embodiments, see Fig.24 and Fig.25 , Fig.24 for Fig.21 The schematic diagram of the structure of the guide rod 123 in the motor 1 is shown, Fig.25 for Fig.21 A schematic diagram of the matching relationship between the ball 1132 of the bearing assembly 113 in the motor 1 and the guide slot in the guide rod 123 is shown. The guide rod 123 is provided with a guide slot 1233. The guide slot 1233 is recessed from the peripheral wall surface of the guide rod 123 toward the axis of the guide rod 123 and extends along the axial direction of the guide rod 123. Part of the ball 1132 is located in the guide slot 1233 and is in rolling matching with the guide slot 1233.

[0377] By setting a guide groove 1233 on the guide rod 123, during the relative movement of the guide rod 123 and the center rod 111, the ball 1132 of the bearing assembly 113 can roll in the guide groove 1233, so as to guide the ball 1132 through the guide groove 1233, thereby ensuring that the guide rod 123 and the center rod 111 can move relative to each other along the axial direction of the center rod 111, so as to avoid the increase of system resistance caused by the offset during the relative movement of the guide rod 123 and the center rod 111, and reduce the energy loss caused by the resistance.

[0378] In some embodiments, the cross section of the guide slot 1233 is arc-shaped, and the arc matches the ball 1132. The cross section of the guide slot 1233 is perpendicular to the axial direction of the guide rod 123.

[0379] By setting the cross section of the guide groove 1233 to an arc shape matching the ball 1132, the ball 1132 can be in line contact with the inner wall surface of the guide groove 1233, which can reduce the contact stress between the ball 1132 and the inner wall surface of the guide groove 1233, so as to further reduce the friction between the ball 1132 and the guide rod 123. In addition, reducing the contact stress between the ball 1132 and the inner wall surface of the guide groove 1233 can also reduce the wear between the ball 1132 and the guide rod 123, thereby increasing the service life.

[0380] In some embodiments, the friction coefficient of the inner wall surface of the guide slot 1233 is less than or equal to 0.05. Exemplarily, the friction coefficient of the inner wall surface of the guide slot 1233 can be 0.02, 0.025, 0.03, 0.035, 0.04, 0.045, 0.05, etc. In this way, the friction coefficient of the inner wall surface of the guide slot 1233 is small, which can further reduce the friction between the ball 1132 and the guide rod 123, so as to further reduce the system resistance.

[0381] In some embodiments, please refer to Fig.25 , the plurality of balls 1132 include a plurality of groups of balls 1132. That is, the plurality of balls 1132 can be divided into a plurality of groups. The plurality of groups of balls 1132 are arranged at intervals along the circumference of the guide rod 123. Exemplarily, the plurality of groups of balls 1132 can be a first group of balls 1132, a second group of balls 1132, a third group of balls 1132 ... an Nth group of balls 1132, where N is greater than or equal to 2. The first group of balls 1132, the second group of balls 1132, the third group of balls 1132 ... an Nth group of balls 1132 are arranged at intervals along the circumference of the guide rod 123.

[0382] For example, the number of each group of balls 1132 may be one or more. When the number of each group of balls 1132 is more than one, the balls 1132 in each group of balls 1132 are arranged along the axial direction of the guide rod 123 .

[0383] The guide rod 123 is provided with a plurality of guide grooves 1233 , and the plurality of guide grooves 1233 are arranged at intervals along the circumference of the guide rod 123 , and a group of balls 1132 is rollingly engaged with one guide groove 1233 .

[0384] By arranging multiple groups of balls 1132 along the axial direction of the guide rod 123 and rolling with a guide groove 1233, the multiple groups of balls 1132 can roll with the guide rod 123 from multiple positions in the circumferential direction of the guide rod 123, so as to improve the stability when the multiple balls 1132 are in cooperation with the guide rod 123, so as to further reduce the system resistance.

[0385] In some embodiments of this application, please refer to Fig.26 , Fig.26 for Figure 5 The first structural schematic diagram of the iron core 1121 in the motor 1 is shown. The iron core 1121 includes a yoke 1121A and a tooth portion 1121B. The yoke 1121A is provided with a first mounting hole 1121C, and the center rod 111 is passed through the first mounting hole 1121C. The tooth portion 1121B is connected to the yoke 1121A and is arranged around the first mounting hole 1121C.

[0386] The teeth 1121B of two adjacent cores 1121 define a receiving groove 1123. The coil 1122 is disposed in the receiving groove 1123. The teeth 1121B are used to support the coil 1122. The teeth 1121B and the yoke 1121A are used to conduct the magnetic field lines of the coil 1122.

[0387] The material of the iron core 1121 is a magnetic conductive material, for example, ferrite, silicon iron, silicon steel, etc.

[0388] In some embodiments of this application, please refer to Fig. 27 , Fig. 27 for Figure 5 A second structural schematic diagram of the iron core 1121 in the motor 1 is shown. The tooth portion 1121B may include a plurality of separately arranged support members 1121D. The plurality of support members 1121D are arranged along the circumference of the yoke 1121A and are connected to the yoke 1121A. The circumference of the yoke 1121A is consistent with the circumference of the first mounting hole 1121C. Exemplarily, the support member 1121D and the yoke 1121A may be connected by means of clamping, welding, screwing, bonding, etc.

[0389] By configuring the tooth portion 1121B to be a plurality of separately arranged support members 1121D and then connecting the plurality of support members 1121D via the yoke portion 1121A, the structure of the core 1121 can be made simpler, and processing and assembly can be facilitated.

[0390] Exemplarily, the support member 1121D may be a plate-like structure, a sheet-like structure, a block-like structure, etc. The yoke 1121A may be a ring-like structure, a cylindrical structure, etc.

[0391] In some embodiments, the tooth portion 1121B further includes an insulating member. An insulating member is disposed between any two adjacent support members 1121D.

[0392] In some examples, the insulating member may be an insulating coating. Specifically, the sides of any two adjacent support members 1121D facing each other are the first side and the second side, respectively. The insulating coating is provided on at least one of the first side and the second side. Exemplarily, the insulating coating is provided on the first side. Alternatively, the insulating coating is provided on the second side. Alternatively, both the first side and the second side are provided with an insulating coating. Exemplarily, the insulating coating may be an insulating paint coating, an insulating glue coating, etc.

[0393] In some other examples, the insulating member may also be an insulating sheet, such as a plastic sheet, a rubber sheet, a silicone sheet, etc.

[0394] By arranging an insulating member between any two adjacent support members 1121D, when the magnetic lines of force of the magnetic field of the coil 1122 are conducted on the multiple support members 1121D on the iron core 1121, the insulating member can interrupt the eddy currents generated by the magnetic lines of force, thereby breaking up the larger eddy currents generated by the magnetic lines of force into smaller eddy currents, thereby reducing the eddy current losses of the iron core 1121, thereby improving the working performance of the motor 1 and enabling the motor 1 to generate sufficient thrust on the vehicle body 100.

[0395] It should be noted that the magnetic field lines generated by the coil 1122 after being energized will be conducted in the iron core 1121 to enhance the strength of the induced magnetic field through the iron core 1121. However, when the magnetic field lines are conducted in the iron core 1121, a large eddy current will be generated, resulting in a large eddy current loss in the iron core 1121, which will in turn affect the working performance of the direct current motor 1.

[0396] It should be noted that the thickness of the insulating member should be as thin as possible to avoid the insulating member occupying too much space between two adjacent support members 1121D, thereby causing the magnetic permeability of the iron core 1121 to be excessively reduced, affecting the performance of the motor 1.

[0397] In some examples, the tooth portion 1121B further includes an adhesive. Any two adjacent support members 1121D are bonded together by the adhesive. Exemplarily, the adhesive may be epoxy resin glue, polyurethane glue, silicone rubber, etc.

[0398] By bonding and fixing the multiple support members 1121D with adhesive, the stability of the multiple support members 1121D after connection can be improved. It should be noted that the thickness of the adhesive should also be as thin as possible to avoid the adhesive occupying too much space between two adjacent support members 1121D, thereby causing the magnetic permeability of the core 1121 to be reduced too much, affecting the performance of the motor 1.

[0399] In some examples, the material of the adhesive member is an insulating material, such as epoxy resin, polyurethane, silicone rubber, etc.

[0400] In this way, the eddy current generated by the magnetic lines of force in the iron core 1121 can be further interrupted by the adhesive, so as to further reduce the eddy current loss of the iron core 1121 and improve the working performance of the motor 1.

[0401] For some examples, see Fig.28 and Fig.29 , Fig.28 for Fig. 27 The schematic diagram of the structure of the yoke 1121A in the iron core 1121 is shown in FIG. Fig.29 for Fig. 27 EE cross-sectional structural diagram. The yoke 1121A is provided with a clamping groove 1121E extending along the circumference of the first mounting hole 1121C, and the clamping groove 1121E is recessed from the outer circumference of the yoke 1121A toward the inner circumference of the yoke 1121A. The end of the support member 1121D facing the yoke 1121A is provided with a protrusion 1121F protruding along the axial direction of the first mounting hole 1121C, and the protrusion 1121F is clamped in the clamping groove 1121E.

[0402] The connection between the support members 1121D and the yoke 1121A is achieved by snapping the protrusions 1121F of the plurality of support members 1121D into the snapping grooves 1121E of the yoke 1121A, thereby facilitating the connection between the support members 1121D and the yoke 1121A.

[0403] In some examples, the protrusion 1121F can be connected to the surface of the snap-fit ​​groove 1121E by interference fit.

[0404] For some examples, see Fig.30 , Fig.30 for Fig. 27 The structural diagram of the support member 1121D in the iron core 1121 is shown in FIG. The thickness of the support member 1121D in the axial direction of the first mounting hole 1121C (eg Fig.30Thus, the space occupied by the support member 1121D can be reduced while the magnetic conductivity of the iron core 1121 is ensured, thereby reducing the space occupied by the iron core 1121 and making the structure of the motor 1 more compact.

[0405] In some embodiments, along the direction of the support member 1121D toward the yoke 1121A, the distance between the two side surfaces of the support member 1121D in the circumferential direction of the first mounting hole 1121C (eg, Fig.30 In this way, the space occupied by the support member 1121D can be reduced while ensuring the magnetic conductivity of the iron core 1121, thereby reducing the space occupied by the iron core 1121 and making the structure of the motor 1 more compact.

[0406] In other embodiments, see Fig.31 , Fig.31 for Figure 5 The third structural schematic diagram of the iron core 1121 in the motor 1 is shown. The iron core 1121 includes a yoke 1121A and a tooth portion 1121B, and the tooth portion 1121B includes a plurality of separately arranged support members 1121D. The plurality of support members 1121D are arranged along the circumference of the yoke 1121A and connected to the yoke 1121A. A first gap is formed between two adjacent support members 1121D.

[0407] By dividing the tooth portion 1121B into a plurality of support members 1121D, and the plurality of support members 1121D are separately arranged, the plurality of support members 1121D are arranged circumferentially along the yoke 1121A, and a first gap is provided between any two adjacent support members 1121D. When magnetic lines of force flow in the iron core 1121, in the circumferential direction of the first mounting hole 1121C, the eddy currents generated by the magnetic lines of force can be interrupted by the first gaps between the plurality of support members 1121D, so that the larger eddy currents generated by the magnetic lines of force can be broken up into smaller eddy currents, thereby reducing the eddy current loss of the iron core 1121, thereby improving the working performance of the motor 1.

[0408] In some examples, the number of support members 1121D may be greater than or equal to 2 and less than or equal to 12. For example, the number of support members 1121D may be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc. In this way, the number of first gaps that can be formed between the plurality of support members 1121D can effectively reduce the eddy current loss of the core 1121, and the number of support members 1121D is also more appropriate, which can reduce the workload of assembling the support members 1121D and the yoke 1121A, and improve the assembly efficiency.

[0409] In some examples, the width of the first gap is equal everywhere along the radial direction of the first mounting hole 1121C. That is, the two inner wall surfaces of the first gap in the circumferential direction of the iron core 1121 are parallel. By making the width of the first gap equal everywhere, the first gap can reduce the eddy current loss of the tooth portion 1121B and make the tooth portion 1121B more beautiful.

[0410] At this time, the width of the first gap formed between two adjacent support members 1121D (eg Fig.31 The width M1 shown in the figure can be greater than or equal to 0.1 mm. For example, the width of the first gap can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. In this way, it is possible to avoid the width of the first gap between two adjacent support members 1121D being too large to affect the thrust density of the motor 1, thereby affecting the working performance of the motor 1.

[0411] It should be noted that the thrust density of the motor 1 refers to the thrust size of the motor 1 per unit volume or per unit mass.

[0412] In some other examples, the width of the first gap gradually increases along the radial direction of the first mounting hole 1121C. The gradually increasing width of the first gap can not only reduce the eddy current loss of the tooth portion 1121B, but also facilitate the heat dissipation of the motor 1 through the first gap of the tooth portion 1121B.

[0413] At this time, the minimum width of the first gap is greater than or equal to 0.1 mm. For example, the minimum width of the first gap may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. In this way, it is possible to avoid the first gap between two adjacent support members 1121D being too large to affect the thrust density of the motor 1, thereby affecting the working performance of the motor 1.

[0414] Exemplarily, the width of the first gap gradually increases along the direction from the inner edge to the outer edge of the tooth portion 1121B. At this time, the minimum width of the first gap is the width of the first gap at the inner edge of the tooth portion 1121B.

[0415] As another example, the width of the first gap gradually increases along the direction from the outer edge of the tooth portion 1121B to the inner edge. At this time, the minimum width of the first gap is the width of the first gap at the outer edge of the tooth portion 1121B.

[0416] After the teeth 1121B of the core 1121 are divided into a plurality of support members 1121D, any two adjacent support members 1121D in the core 1121 may be connected to improve the structural strength of the core 1121. Fig.32 and Fig.33 , Fig.32 for Fig.31 FIG. 1 is a schematic diagram showing a structure in which adjacent support members 1121D in the core 1121 are connected. Fig.33 for Fig.32 The enlarged schematic diagram of the structure at P4 in FIG. One of any two adjacent support members 1121D is provided with a first engaging notch 1121G, and the other of any two adjacent support members 1121D is provided with a first engaging protrusion 1121H. The first engaging protrusion 1121H is engaged in the first engaging notch 1121G.

[0417] By connecting two adjacent support members 1121D through the first clamping protrusion 1121H and the first clamping notch 1121G, the multiple support members 1121D can support each other, thereby improving the structural strength of the tooth portion 1121B, and further improving the structural strength of the iron core 1121. In addition, by clamping the first clamping protrusion 1121H and the first clamping notch 1121G, the adjacent support members 1121D can be conveniently and quickly connected, thereby improving the connection efficiency of the multiple support members 1121D.

[0418] For some examples, see Fig.33 For one of the support members 1121D, there are two support members 1121D adjacent to it (i.e., two support members 1121D located on both sides of the one of the support members 1121D in the circumferential direction of the first mounting hole 1121C). In this case, a first clamping notch 1121G can be respectively provided at both ends of the one of the support members 1121D in the circumferential direction of the first mounting hole 1121C, and a first clamping protrusion 1121H can be provided at one end of the two support members 1121D adjacent to the one of the support members 1121D close to the one of the support members 1121D.

[0419] In some other embodiments, adjacent support members 1121D may also be connected in other ways, such as by screw connection, welding, etc.

[0420] In some examples, the first engaging notch 1121G may be a dovetail groove structure, a C-shaped structure, a convex structure, etc. The shape of the first engaging protrusion 1121H matches the shape of the first engaging notch 1121G.

[0421] In other embodiments, see Fig.34 and Fig.35 , Fig.34 for Fig.31 The schematic diagram of the structure when the yoke 1121A in the iron core 1121 is a split structure is shown. Fig.35 for Fig.34 The enlarged schematic diagram of the structure at P5 in the figure. The yoke 1121A is a split structure. The yoke 1121A includes a plurality of arc segments 1121K arranged along the circumference of the first mounting hole 1121C. A second gap is formed between two adjacent arc segments 1121K. In other words, along the circumference of the first mounting hole 1121C, the yoke 1121A is divided into a plurality of separate arc segments 1121K.

[0422] In this way, a second gap is formed between any two adjacent arc segments 1121K among the multiple arc segments 1121K of the yoke 1121A. When magnetic lines of force flow in the iron core 1121, the eddy currents generated by the magnetic lines of force in the yoke 1121A can be interrupted by the second gap between the multiple arc segments 1121K, so that the larger eddy currents generated by the magnetic lines of force can be broken up into smaller eddy currents, thereby further reducing the eddy current loss of the iron core 1121 to improve the working performance of the motor 1.

[0423] In some examples, the number of arc segments 1121K may be greater than or equal to 2 and less than or equal to 12. For example, the number of arc segments 1121K may be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc. In this way, the number of gaps that can be formed between the multiple arc segments 1121K can effectively reduce the eddy current loss of the iron core 1121, and the number of arc segments 1121K is also more appropriate, which can reduce the workload of assembling the iron core 1121 and improve the assembly efficiency.

[0424] In some examples, the width of the second gap is equal along the radial direction of the first mounting hole 1121C. That is, the two inner wall surfaces of the second gap in the circumferential direction of the first mounting hole 1121C are parallel. By making the width of the second gap equal everywhere, the second gap can reduce the eddy current loss of the yoke 1121A and make the yoke 1121A more beautiful.

[0425] At this time, the width of the second gap between two adjacent arc segments 1121K (eg Fig.35 The width M2 shown in FIG. 1 may be greater than or equal to 0.1 mm. For example, the width of the second gap may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. In this way, it is possible to avoid the second gap between two adjacent arc segments 1121K being too large to affect the thrust density of the motor 1, thereby affecting the performance of the motor 1.

[0426] In some other examples, the width of the second gap gradually increases along the radial direction of the first mounting hole 1121C. The gradually increasing width of the second gap can not only reduce the eddy current loss of the yoke 1121A, but also facilitate the heat dissipation of the motor 1 through the second gap of the yoke 1121A.

[0427] At this time, the minimum width of the second gap is greater than or equal to 0.1 mm. For example, the minimum width of the second gap may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. In this way, it is possible to avoid the second gap between two adjacent arc segments 1121K being too large to affect the thrust density of the motor 1, thereby affecting the working performance of the motor 1.

[0428] Exemplarily, the width of the second gap gradually increases along the direction from the inner edge of the yoke 1121A to the outer edge. At this time, the minimum width of the second gap is the width of the second gap at the inner edge of the yoke 1121A.

[0429] As another example, the width of the second gap gradually increases along the direction from the outer edge of the yoke 1121A to the inner edge. At this time, the minimum width of the second gap is the width of the second gap at the outer edge of the yoke 1121A.

[0430] In some examples, one arc segment 1121K is connected to at least one support member 1121D. After two adjacent support members 1121D are connected via the first clamping protrusion 1121H and the first clamping notch 1121G, multiple arc segments 1121K can be connected together via multiple support members 1121D.

[0431] One arc segment 1121K may be connected to one support member 1121D. One arc segment 1121K may also be connected to multiple support members 1121D. The number of arc segments 1121K may be the same as the number of support members 1121D. The number of arc segments 1121K may also be different from the number of support members 1121D.

[0432] In some other examples, one support member 1121D is connected to at least one arc segment 1121K, that is, one support member 1121D can be connected to one arc segment 1121K, or one support member 1121D can be connected to multiple arc segments 1121K.

[0433] To facilitate the installation of multiple arc segments 1121K and multiple support members 1121D, the number of arc segments 1121K can be the same as the number of support members 1121D, and multiple arc segments 1121K correspond to multiple support members 1121D one by one, with one arc segment 1121K connected to one support member 1121D.

[0434] In addition, in order to improve the structural strength of the iron core 1121, in some examples, one arc segment 1121K and one support member 1121D can be integrally formed, for example, one arc segment 1121K and one support member 1121D are connected together through a stamping process. In this way, the connection strength between the arc segment 1121K and the support member 1121D is relatively high, and after multiple arc segments 1121K are connected through multiple support members 1121D, the structural strength of the iron core 1121 can also be improved.

[0435] In some other examples, the arc segment 1121K and the support member 1121D may also be connected by means of snap connection, screw connection, welding, etc.

[0436] In some other embodiments, see Fig.36 , Fig.37 and Fig.38 , Fig.36 for Figure 5 The fourth structural schematic diagram of the iron core 1121 in the motor 1 is shown, Fig.37 for Fig.36 The schematic diagram of the iron core 1121 in the first viewing angle is shown. Fig.38 for Fig.36 The schematic diagram of the decomposition of the iron core 1121 at the second viewing angle is shown. The tooth portion 1121B includes a first tooth portion 112A and a second tooth portion 112B which are separately arranged. The first tooth portion 112A includes a plurality of first support members 112C which are spaced apart along the circumference of the first mounting hole 1121C. The second tooth portion 112B includes a plurality of second support members 112D which are spaced apart along the circumference of the first mounting hole 1121C. The plurality of first support members 112C and the plurality of second support members 112D are arranged alternately along the circumference of the first mounting hole 1121C, and a third gap is formed between adjacent first support members 112C and second support members 112D.

[0437] By forming a third gap between the first support member 112C and the second support member 112D, the eddy currents generated by the magnetic lines of force can be interrupted by the third gap in the circumferential direction of the first mounting hole 1121C, so that the larger eddy currents generated by the magnetic lines of force can be broken up into smaller eddy currents, thereby reducing the eddy current losses of the iron core 1121 and improving the working performance of the motor 1.

[0438] Moreover, through the arrangement of the first tooth portion 112A and the second tooth portion 112B, when assembling the iron core 1121, it is only necessary to install the first support member 112C of the first tooth portion 112A between the adjacent second support members 112D of the second tooth portion 112B along the axial direction of the first mounting hole 1121C, thereby facilitating the assembly of the iron core 1121.

[0439] In some examples, a plurality of first support members 112C are connected to the outer circumference of the yoke 1121A. Thus, when assembling the core 1121, the second support members 112D are disposed between adjacent first support members 112C, so that the second support members 112D are located on the outer circumference of the yoke 1121A, so that the first support members 112C and the second support members 112D form the teeth 1121B of the core 1121, which facilitates the positioning of the core 1121 during assembly.

[0440] Exemplarily, the plurality of first support members 112C and the yoke 1121A are an integral structure. For example, the first support members 112C and the yoke 1121A are formed as one piece by a stamping process, or can be directly processed as one piece during processing. Another exemplary embodiment, the first support members 112C and the yoke 1121A can also be connected by means of clamping, bonding, etc.

[0441] In some examples, the second support member 112D may be connected to the yoke 1121A by means of clamping, bonding, etc. The second support member 112D may also be connected to the first support member 112C by means of clamping, bonding, etc.

[0442] In some examples, the inner diameter of the first tooth portion 112A is the same as the outer diameter of the yoke portion 1121A, and the inner diameter of the second tooth portion 112B is the same as the outer diameter of the yoke portion 1121A. In this way, after the iron core 1121 is assembled, the first support member 112C and the second support member 112D can be closely attached to the yoke portion 1121A, thereby ensuring the integrity of the iron core 1121. It can also prevent the gap between the second support member 112D and the yoke portion 1121A from being too large to affect the thrust density of the motor 1, thereby ensuring the performance of the motor 1.

[0443] In some examples, the outer diameter of the first support 112C is the same as the outer diameter of the second support 112D.

[0444] It should be noted that the inner diameter of the first support member 112C refers to the distance between the side surface of the first support member 112C facing the yoke 1121A and the center of the tooth portion 1121B. The outer diameter of the first support member 112C refers to the distance between the side surface of the first support member 112C facing away from the yoke 1121A and the center of the tooth portion 1121B. The inner diameter of the second support member 112D refers to the distance between the side surface of the second support member 112D facing the yoke 1121A and the center of the tooth portion 1121B. The outer diameter of the second support member 112D refers to the distance between the side surface of the second support member 112D facing away from the yoke 1121A and the center of the tooth portion 1121B.

[0445] In some embodiments, see Fig.39 and Fig.40 , Fig.39 for Fig.36 The exploded schematic diagram of another structure of the iron core 1121 in the first viewing angle is shown. Fig.40 for Fig.36 Another structure of the iron core 1121 is shown as an exploded schematic diagram at a second viewing angle. The yoke 1121A includes a first yoke 112E and a second yoke 112F which are separately arranged. A plurality of first support members 112C are connected to the first yoke 112E, and a plurality of second support members 112D are connected to the second yoke 112F.

[0446] By dividing the yoke 1121A into a first yoke 112E and a second yoke 112F, and connecting a plurality of first support members 112C to the first yoke 112E, and connecting a plurality of second support members 112D to the second yoke 112F, the plurality of first support members 112C can be connected and supported by the first yoke 112E, and the plurality of second support members 112D can be connected and supported by the second yoke 112F. In this way, when assembling the core 1121, the first yoke 112E and the plurality of first support members 112C can be assembled as a whole, and the second yoke 112F and the plurality of second support members 112D can be assembled as a whole, so as to reduce the difficulty of assembly.

[0447] In some examples, the plurality of first support members 112C and the first yoke 112E are an integral structure. For example, the first support member 112C and the first yoke 112E are formed as one piece by a stamping process, or can be directly processed as one piece during processing. In another exemplary embodiment, the first support member 112C and the first yoke 112E can also be connected by means of clamping, bonding, etc.

[0448] The plurality of second support members 112D and the second yoke 112F are an integral structure. For example, the second support members 112D and the second yoke 112F are formed into one piece by a stamping process, or can be directly processed as one piece during processing. For example, the second support members 112D and the second yoke 112F can also be connected by means of clamping, bonding, etc.

[0449] In some examples, the second yoke 112F is located on one side of the first yoke 112E in the axial direction of the first mounting hole 1121C. Exemplarily, the first support member 112C is connected to the side of the first yoke 112E facing the second yoke 112F, and the second support member 112D is connected to the outer peripheral surface of the second yoke 112F. In this way, after the second yoke 112F is located on one side of the first yoke 112E in the axial direction of the first mounting hole 1121C and the first yoke 112E is connected, one second support member 112D can be located between two adjacent first support members 112C.

[0450] In some examples, the inner diameter of the first yoke 112E is the same as the inner diameter of the second yoke 112F. In this way, the integrity of the yoke 1121A formed by the first yoke 112E and the second yoke 112F can be ensured.

[0451] In some examples, the inner diameter of the first support 112C is the same as the inner diameter of the second support 112D. The outer diameter of the first support 112C is the same as the outer diameter of the second support 112D.

[0452] In some examples, the outer diameter of the first yoke 112E may be greater than the outer diameter of the second yoke 112F. The outer diameter of the first yoke 112E may also be equal to the outer diameter of the second yoke 112F.

[0453] In some embodiments, see Fig.41 and Fig.42 , Fig.41 for Fig.36 The exploded schematic diagram of another structure of the iron core 1121 in the first viewing angle is shown. Fig.42 for Fig.36 Another structure of the iron core 1121 is shown as an exploded schematic diagram under a second viewing angle. Part of the second yoke 112F is inserted into the interior of the first yoke 112E. In this way, when assembling the iron core 1121, the first yoke 112E and the second yoke 112F can be used for positioning to facilitate the assembly of the iron core 1121.

[0454] In some examples, along the axial direction of the first mounting hole 1121C, the height of the second yoke 112F is greater than the height of the first yoke 112E. That is, the second yoke 112F may include a first portion and a second portion arranged along the axial direction of the first mounting hole 1121C, the second portion being located inside the first yoke 112E, and the first portion being located outside the first yoke 112E. The second support member 112D may be connected to the outer circumferential surface of the first portion of the second yoke 112F, and the first support member 112C may be connected to the side of the first yoke 112E facing the first portion.

[0455] In some examples, the outer diameter of the second yoke 112F is the same as the inner diameter of the first yoke 112E. In this way, the second yoke 112F and the first yoke 112E can be closely fitted, thereby improving the structural integrity of the yoke 1121A.

[0456] In some examples, the inner diameter of the first support 112C is the same as the inner diameter of the first yoke 112E. The inner diameter of the second support 112D is the same as the inner diameter of the first yoke 112E.

[0457] In some embodiments, see Fig.43 and Fig.44 , Fig.43 for Fig.36 The exploded schematic diagram of another structure of the iron core 1121 in the first viewing angle is shown. Fig.44 for Fig.36 The first yoke 112E includes a first annular portion 112G and a plurality of first rib portions 112H. The plurality of first rib portions 112H are connected to the outer circumference of the first annular portion 112G and are arranged at intervals along the circumference of the first annular portion 112G.

[0458] The second yoke 112F includes a second annular portion 112K and a plurality of second rib portions 112L. The second annular portion 112K is located on one side of the first annular portion 112G in the axial direction of the first mounting hole 1121C, and the plurality of first rib portions 112H and the plurality of second rib portions 112L are arranged alternately along the circumferential direction of the first mounting hole 1121C, and a fourth gap is formed between adjacent first rib portions 112H and second rib portions 112L.

[0459] By providing the first rib portion 112H and the second rib portion 112L, a plurality of fourth gaps can be formed in the yoke portion 1121A of the core 1121. The fourth gaps can interrupt the eddy currents generated by the magnetic lines of force in the yoke portion 1121A, thereby breaking up the larger eddy currents generated by the magnetic lines of force in the yoke portion 1121A into smaller eddy currents, thereby reducing the eddy current loss of the core 1121, thereby improving the working performance of the motor 1.

[0460] In some examples, a plurality of first support members 112C are connected to a side surface of the first annular portion 112G facing the second annular portion 112K, and a first rib portion 112H is connected to a first support member 112C. A plurality of second support members 112D are connected to the outer circumferential surface of the second annular portion 112K, and a second rib portion 112L is connected to a side surface of a second support member 112D facing the first annular portion 112G in the axial direction of the first mounting hole 1121C.

[0461] In this way, when assembling the iron core 1121, it is convenient to alternately arrange the multiple first support members 112C and the multiple second support members 112D along the circumferential direction of the first mounting hole 1121C, and it is convenient to alternately arrange the multiple first rib portions 112H and the multiple second rib portions 112L along the axial direction of the first mounting hole 1121C, so as to facilitate the assembly of the iron core 1121.

[0462] In some examples, the inner diameter of the first annular portion 112G is the same as the inner diameter of the second annular portion 112K. In this way, the integrity of the yoke portion 1121A of the core 1121 can be ensured after the first annular portion 112G and the second annular portion 112K are assembled, thereby improving the structural strength of the core 1121.

[0463] In some examples, the outer diameter of the first rib portion 112H is the same as the outer diameter of the second rib portion 112L. The outer diameter of the first rib portion 112H is the distance between the surface of the first rib portion 112H facing away from the first mounting hole 1121C and the center of the yoke portion 1121A. The outer diameter of the second rib portion 112L is the distance between the surface of the second rib portion 112L facing away from the first mounting hole 1121C and the center of the yoke portion 1121A.

[0464] In some embodiments, see Fig.45 , Fig.45 for Fig.36 The iron core 1121 is provided with a structural schematic diagram of a connection rib and a connection groove. The tooth portion 1121B further includes a plurality of connection ribs 112M and a plurality of connection grooves 112N. Any two adjacent first support members 112C are connected by a connection rib 112M, and a plurality of second support members 112D are provided with connection grooves 112N. A connection rib 112M is clamped in a connection groove 112N.

[0465] The first support member 112C and the second support member 112D can be connected by snapping the connection rib 112M into the connection groove 112N, so that the structure of the iron core 1121 is more stable after assembly.

[0466] In some embodiments, see Fig.46 , Fig.46 for Fig.36Another structural schematic diagram when the iron core 1121 is provided with a connecting rib 112M and a connecting slot 112N. The tooth portion 1121B also includes a plurality of connecting ribs 112M and a plurality of connecting slots 112N. Any two adjacent second support members 112D are connected by a connecting rib 112M, and a plurality of first support members 112C are provided with connecting slots 112N. A connecting rib 112M is clamped in a connecting slot 112N.

[0467] In some embodiments of this application, please refer to Fig.47 , Fig.47 for Figure 5 The fifth structural schematic diagram of the iron core 1121 in the motor 1 is shown. The iron core 1121 is provided with a blocking groove 1124. Among them, the blocking groove 1124 is arranged on the periphery of the first mounting hole 1121C. In this way, when magnetic lines of force flow in the iron core 1121, the eddy currents generated by the magnetic lines of force in the circumferential direction of the first mounting hole 1121C can be interrupted by the blocking groove 1124, so that the larger eddy currents generated by the magnetic lines of force can be broken up into smaller eddy currents, thereby reducing the eddy current loss of the iron core 1121, so as to improve the working performance of the motor 1.

[0468] The blocking groove 1124 may extend in the axial direction of the first mounting hole 1121C, or in the direction from the inner wall surface of the first mounting hole 1121C to the outer edge of the iron core 1121, or in the circumferential direction of the first mounting hole 1121C.

[0469] In some embodiments, the blocking groove 1124 includes a first blocking groove 1124A. The first blocking groove 1124A is provided in the tooth portion 1121B. In some examples, along the axial direction of the first mounting hole 1121C, the first blocking groove 1124A can be recessed from one side surface of the tooth portion 1121B to the other side surface of the tooth portion 1121B. By providing the first blocking groove 1124A in the tooth portion 1121B, when the magnetic lines of force flow through the tooth portion 1121B, the first blocking groove 1124A can interrupt the eddy current formed by the magnetic lines of force in the tooth portion 1121B, thereby reducing the eddy current loss of the tooth portion 1121B, and further reducing the eddy current loss of the iron core 1121, so as to improve the working performance of the motor 1.

[0470] The number of the first blocking groove 1124A may be one or more. When the number of the first blocking groove 1124A is more than one, the plurality of first blocking grooves 1124A are arranged at intervals along the circumference of the first mounting hole 1121C. By providing a plurality of first blocking grooves 1124A, the eddy current of the tooth portion 1121B can be interrupted at multiple locations, thereby further reducing the eddy current loss of the tooth portion 1121B, and further reducing the eddy current loss of the iron core 1121.

[0471] For some examples, see Fig.47 , the first blocking groove 1124A extends in a direction from the inner edge of the tooth portion 1121B to the outer edge of the tooth portion 1121B. Exemplarily, the first blocking groove 1124A may extend in the radial direction of the tooth portion 1121B. The first blocking groove 1124A may also extend in a third direction, wherein the third direction is parallel to the upper end surface of the tooth portion 1121B, and the angle between the third direction and the radial direction of the tooth portion 1121B is greater than 0° and less than 90°. For example, the angle between the third direction and the radial direction of the tooth portion 1121B may be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, etc. Exemplarily, the first blocking groove 1124A may be a linear groove, a trapezoidal groove, an arc groove, a wavy groove, or an irregular groove, etc., wherein the radial direction of the tooth portion 1121B is consistent with the radial direction of the first mounting hole 1121C, and is consistent with the radial direction of the yoke portion 1121A.

[0472] By extending the first blocking groove 1124A along the inner edge of the tooth portion 1121B toward the outer edge of the tooth portion 1121B, the first blocking groove 1124A can have a certain length, so that the first blocking groove 1124A can interrupt more eddy currents to further reduce the eddy current loss of the iron core 1121.

[0473] For example, see Fig.48 , Fig.48 for Fig.47 The tooth portion 1121B of the core 1121 is a schematic structural diagram. The tooth portion 1121B is annular, and the first blocking groove 1124A penetrates the tooth portion 1121B radially to the inner edge of the tooth portion 1121B (such as Fig.48 In this way, the eddy current generated by the magnetic lines of force at the inner edge of the tooth portion 1121B can also be interrupted by the first blocking groove 1124A, so that the first blocking groove 1124A can further reduce the eddy current loss of the iron core 1121. At this time, the first blocking groove 1124A may not penetrate to the outer edge of the tooth portion 1121B, or may penetrate to the outer edge of the tooth portion 1121B.

[0474] In some examples, the first blocking groove 1124A does not penetrate to the outer edge of the tooth portion 1121B, nor does it penetrate to the inner edge of the tooth portion 1121B. In this way, the eddy current loss of the iron core 1121 can be reduced by the first blocking groove 1124A, and the integrity of the tooth portion 1121B can be ensured to improve the structural strength of the tooth portion 1121B, thereby ensuring the structural strength of the iron core 1121.

[0475] In some examples, the first blocking groove 1124A extends along the axial direction of the tooth portion 1121B.

[0476] Please continue reading Fig.47, the blocking groove 1124 also includes a second blocking groove 1124B. The second blocking groove 1124B is provided in the yoke 1121A. By providing the second blocking groove 1124B in the yoke 1121A, when the magnetic lines of force flow in the yoke 1121A, the second blocking groove 1124B can interrupt the eddy current formed by the magnetic lines of force in the yoke 1121A, thereby reducing the eddy current loss of the yoke 1121A, and further reducing the eddy current loss of the iron core 1121, so as to improve the working performance of the linear motor 1.

[0477] The number of the second blocking groove 1124B may be one or more. When the number of the second blocking groove 1124B is more than one, the plurality of second blocking grooves 1124B are arranged at intervals along the circumference of the first mounting hole 1121C. By providing a plurality of second blocking grooves 1124B, the eddy current of the yoke 1121A can be interrupted at multiple locations, thereby further reducing the eddy current loss of the yoke 1121A, and further reducing the eddy current loss of the iron core 1121.

[0478] For some examples, see Fig.47 , the second blocking groove 1124B extends along the axial direction of the yoke 1121A. That is, the second blocking groove 1124B extends along the axial direction of the first mounting hole 1121C. By extending the second blocking groove 1124B along the axial direction of the yoke 1121A, the second blocking groove 1124B can have a certain length in the axial direction of the yoke 1121A, so that the second blocking groove 1124B can interrupt more eddy currents to further reduce the eddy current loss of the iron core 1121. Exemplarily, the second blocking groove 1124B can be a straight groove, a trapezoidal groove, an arc groove, a wavy groove or an irregular groove, etc.

[0479] In some examples, along the axial direction of the yoke 1121A, the second blocking slot 1124B may penetrate from one side of the yoke 1121A to the other side of the yoke 1121A. In this way, the length of the second blocking slot 1124B in the axial direction of the yoke 1121A may be further increased, thereby further reducing the eddy current loss of the core 1121.

[0480] In some examples, the second blocking groove 1124B extends in a direction from the inner edge of the yoke 1121A to the outer edge of the yoke 1121A. Exemplarily, the second blocking groove 1124B may extend in the radial direction of the yoke 1121A. The second blocking groove 1124B may also extend in a fourth direction, wherein the fourth direction is parallel to the upper end surface of the yoke, and the angle between the fourth direction and the radial direction of the yoke 1121A is greater than 0° and less than 90°. For example, the angle between the fourth direction and the radial direction of the yoke 1121A may be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, etc. The radial direction of the yoke 1121A is consistent with the radial direction of the first mounting hole 1121C.

[0481] By extending the second blocking groove 1124B in the direction from the inner edge of the yoke 1121A to the outer edge of the yoke 1121A, the length of the second blocking groove 1124B in the direction from the inner edge of the yoke 1121A to the outer edge of the yoke 1121A can be increased, so that the second blocking groove 1124B can interrupt more eddy currents to further reduce the eddy current loss of the iron core 1121.

[0482] In some examples, the second blocking groove 1124B may extend to the inner edge of the yoke 1121A. In this case, the second blocking groove 1124B may extend to the outer edge of the yoke 1121A, or may not extend to the outer edge of the yoke 1121A. Fig.49 , Fig.49 for Fig.47 The second blocking groove 1124B penetrates to the outer edge of the yoke 1121A. At this time, the second blocking groove 1124B may penetrate to the inner edge of the yoke 1121A, or may not penetrate to the inner edge of the yoke 1121A413.

[0483] In some examples, the second blocking groove 1124B extends along the circumference of the yoke 1121A.

[0484] For some examples, see Fig.49 , the second blocking groove 1124B can be connected to the first blocking groove 1124A. Exemplarily, the first blocking groove 1124A extends to the inner edge of the tooth portion 1121B, and the second blocking groove 1124B penetrates the yoke portion 1121A along the axial direction of the first mounting hole 1121C, and extends to the outer edge of the yoke portion 1121A along the radial direction of the first mounting hole 1121C. Along the extension direction of the first blocking groove 1124A, the projection of the first blocking groove 1124A partially overlaps with the projection of the second blocking groove 1124B, so as to achieve the communication between the first blocking groove 1124A and the second blocking groove 1124B.

[0485] In this way, the eddy current at the connection position between the tooth portion 1121B and the yoke portion 1121A can also be interrupted by the first blocking groove 1124A and the second blocking groove 1124B, thereby further reducing the eddy current loss of the iron core 1121.

[0486] When there are a plurality of first blocking grooves 1124A and a plurality of second blocking grooves 1124B, one first blocking groove 1124A is connected to one second blocking groove 1124B.

[0487] Based on the above, please refer to Fig.50 , Fig.50 for Fig.47Schematic diagram of the structure of the first blocking slot 1124A of the core 1121 extending through the outer edge of the tooth portion 1121B and extending through the inner edge of the tooth portion 1121B. In some embodiments, the first blocking slot 1124A extends through the outer edge of the tooth portion 1121B (eg Fig.50 X2 position shown in FIG), and penetrates to the inner edge of the tooth portion 1121B (such as Fig.50 X3 position shown in FIG. 1 ). That is, along the direction from the inner edge of the tooth portion 1121B to the outer edge, the first blocking groove 1124A penetrates the tooth portion 1121B. In this way, the length of the first blocking groove 1124A in the direction from the inner edge of the tooth portion 1121B to the outer edge can be further increased, thereby further increasing the eddy current area interrupted by the first blocking groove 1124A, so as to further reduce the eddy current loss of the iron core 1121.

[0488] In addition, in some other embodiments, see Fig.51 , Fig.51 for Fig.47 Another structural schematic diagram of the tooth portion 1121B in the iron core 1121 is shown. The first blocking groove 1124A can penetrate to the outer edge of the tooth portion 1121B. In this case, the first blocking groove 1124A does not penetrate to the inner edge of the tooth portion 1121B.

[0489] In some embodiments, see Fig.52 , Fig.52 for Fig.47 The second blocking groove 1124B of the iron core 1121 is shown as a structural schematic diagram, which penetrates to the inner edge of the yoke 1121A and penetrates to the outer edge of the yoke 1121A. The second blocking groove 1124B penetrates to the inner edge of the yoke 1121A and penetrates to the outer edge of the yoke 1121A. That is, the second blocking groove 1124B penetrates the yoke 1121A in the direction from the outer edge of the yoke 1121A to the inner edge.

[0490] By having the second blocking groove 1124B penetrate to the inner edge of the yoke 1121A and to the outer edge of the yoke 1121A, the size of the second blocking groove 1124B in the direction from the outer edge of the yoke 1121A to the inner edge can be increased, thereby further increasing the eddy current area interrupted by the second blocking groove 1124B to further reduce the eddy current loss of the iron core 1121.

[0491] In other embodiments, the second blocking groove 1124B does not penetrate to the inner edge of the yoke 1121A, nor does it penetrate to the outer edge of the yoke 1121A. In this way, the eddy current loss of the iron core 1121 can be reduced by the second blocking groove 1124B, and the integrity of the yoke 1121A can be ensured, so as to improve the structural strength of the yoke 1121A, thereby ensuring the structural strength of the iron core 1121.

[0492] In some embodiments of the present application, the core 1121 is made by powder metallurgy process.

[0493] In some embodiments, the raw materials of the iron core 1121 include a soft magnetic composite material in the form of powder particles and an insulating material, and the insulating material is coated on the surface of the soft magnetic composite material. In this way, since the material of the iron core 1121 contains the insulating material, and the insulating material is coated on the surface of the soft magnetic composite material, the eddy current generated when the magnetic lines of force are conducted on the iron core 1121 can be interrupted by the insulating material, thereby breaking up the larger eddy current generated by the magnetic lines of force into smaller eddy currents, thereby reducing the eddy current loss of the iron core 1121, so as to improve the working performance of the motor 1.

[0494] In some examples, the soft magnetic composite material may be iron powder or iron-nickel alloy powder, etc. The insulating material may be resin, rubber, etc.

[0495] For some examples, see Fig.53 , Fig.53 for Figure 5 The sixth structural schematic diagram of the iron core 1121 in the motor 1 is shown. The iron core 1121 is provided with a rib groove 1125, and a reinforcement member is provided in the rib groove 1125. By providing the rib groove 1125 and providing the reinforcement member in the rib groove 1125, the structure of the iron core 1121 can be strengthened by the reinforcement member to improve the structural strength of the iron core 1121.

[0496] In some examples, the reinforcement member is made by injection molding. That is, the reinforcement member is directly injection molded in the rib groove 1125 to form the reinforcement member. The reinforcement member is made by injection molding, so that the reinforcement member can be more firmly combined with the iron core 1121, thereby improving the reinforcement effect. In some other examples, the reinforcement member can also be a rod-shaped structural member, a plate-shaped structural member, etc., which is arranged in the rib groove 1125.

[0497] In some examples, the rib groove 1125 extends along the circumference of the core 1121. In other examples, the rib groove 1125 extends along the radial direction of the core 1121. In other examples, there are multiple rib grooves 1125, some of which extend along the axial direction of the core 1121, and another part of which extends along the radial direction of the core 1121.

[0498] In some examples, the rib groove 1125 is provided in the tooth portion 1121B. In other examples, the rib groove 1125 is provided in the yoke portion 1121A. In other examples, part of the rib groove 1125 is provided in the tooth portion 1121B, and another part of the rib groove 1125 is provided in the yoke portion 1121A.

[0499] For some examples, see Figure 53 to Figure 56 , Fig.54 for Fig.53 The structure diagram of the iron core 1121 is shown in relative perspective. Fig.55 for Fig.53 The schematic diagram of the structure when the iron core 1121 is provided with a third rib groove 1125C is shown. Fig.56 for Fig.55 The structure diagram of the iron core 1121 is shown in relative perspective.

[0500] The core 1121 includes a first surface 1121M and a second surface 1121N along the axial direction of the core 1121. Specifically, the first surface 1121M includes a side surface of the yoke 1121A in the axial direction of the core 1121 and a side surface of the tooth 1121B in the axial direction of the core 1121. The second surface 1121N includes the other side surface of the yoke 1121A in the axial direction of the core 1121 and the other side surface of the tooth 1121B in the axial direction of the core 1121.

[0501] The rib grooves 1125 include a plurality of first rib grooves 1125A, a plurality of second rib grooves 1125B, and a plurality of third rib grooves 1125C. The plurality of first rib grooves 1125A are arranged at intervals along the circumference of the core 1121, and the first rib grooves 1125A are recessed from the first surface 1121M toward the second surface 1121N. The plurality of second rib grooves 1125B are arranged at intervals along the circumference of the core 1121, and the second rib grooves 1125B are recessed from the second surface 1121N toward the first surface 1121M. The plurality of third rib grooves 1125C are arranged at intervals along the circumference of the core 1121, and the third rib grooves 1125C are recessed from the inner circumference of the core 1121 toward the outer circumference.

[0502] By providing the first rib groove 1125A, the second rib groove 1125B and the third rib groove 1125C, the structure of multiple positions of the iron core 1121 can be strengthened, thereby further improving the structural strength of the iron core 1121.

[0503] In some examples, the first rib groove 1125A is provided on the tooth portion 1121B. The second rib groove 1125B is provided on the tooth portion 1121B. The third rib groove 1125C is provided on the yoke portion 1121A.

[0504] For some examples, see Fig.57 and Fig.58 , Fig.57 for Fig.55 The enlarged schematic diagram of the structure at P7 in the figure. Fig.58 for Fig.56The enlarged schematic diagram of the structure at P8 in the figure. Along the circumference of the core 1121, the first rib groove 1125A includes a first inner wall surface 1125D and a second inner wall surface 1125E. The second rib groove 1125B includes a third inner wall surface 1125F and a fourth inner wall surface 1125G. One first rib groove 1125A corresponds to one second rib groove 1125B. For the corresponding first rib groove 1125A and second rib groove 1125B, along the axial direction of the core 1121, the projection of the second inner wall surface 1125E coincides with the projection of the third inner wall surface 1125F, and along the circumference of the core 1121, the first inner wall surface 1125D and the fourth inner wall surface 1125G are respectively located on both sides of the first inner wall surface 1125D.

[0505] That is, the corresponding first rib groove 1125A and the second rib groove 1125B are staggered in the circumferential direction of the iron core 1121, and have an inner wall surface overlapped in the axial direction of the iron core 1121. In this way, the corresponding first rib groove 1125A and the second rib groove 1125B can be made closer, and after reinforcing members are arranged in the first rib groove 1125A and the second rib groove 1125B, the structure of the iron core 1121 can be reinforced from both sides in the axial direction to improve the structural strength of the iron core 1121.

[0506] On this basis, the rib groove 1125 also includes a plurality of fourth rib grooves 1125H. The fourth rib groove 1125H extends along the axial direction of the iron core 1121, and a first rib groove 1125A is connected to a second rib groove 1125B through a fourth rib groove 1125H. In this way, after reinforcing members are arranged in the first rib groove 1125A, the second rib groove 1125B and the fourth rib groove 1125H by the injection molding process, the reinforcing members in the first rib groove, the reinforcing members in the second rib groove 1125B and the reinforcing members in the fourth rib groove 1125H can be connected together to form a whole, thereby further enhancing the reinforcing effect of the reinforcing members and further improving the structural strength of the iron core 1121.

[0507] In some examples, the third rib groove 1125C penetrates the core 1121 along the axial direction of the core 1121, and at least one of the first rib groove 1125A and the second rib groove 1125B is connected to the third rib groove 1125C. In this way, after reinforcing members are arranged in the first rib groove 1125A, the second rib groove 1125B and the third rib groove 1125C by the injection molding process, at least one of the reinforcing member in the first rib groove and the reinforcing member in the second rib groove 1125B can be connected to the reinforcing member in the third rib groove 1125C to form a whole, thereby further enhancing the reinforcing effect of the reinforcing member and further improving the structural strength of the core 1121.

[0508] In some examples, the outer surface of the core 1121 is coated by an injection molding process. In this way, the reinforcement members in the first rib groove 1125A, the reinforcement members in the second rib groove 1125B, the reinforcement members in the third rib groove 1125C, and the reinforcement members in the fourth rib groove 1125H can be connected as a whole by injection molding of the outer surface of the core 1121, thereby improving the integrity of the core 1121 and improving the structural strength of the core 1121.

[0509] In some embodiments, please refer to Fig.53 The iron core 1121 further includes a force-bearing member 1125K. The force-bearing member 1125K is disposed in the first mounting hole 1121C and extends along the circumference of the first mounting hole 1121C. The force-bearing member 1125K can support the iron core 1121 from the inner surface of the iron core 1121, thereby further improving the structural strength of the iron core 1121.

[0510] In some examples, the stress-bearing member 1125K may be a metal ring, such as a steel ring, an aluminum ring, an aluminum alloy ring, etc.

[0511] In some examples, along the axial direction of the core 1121, the height of the force-bearing member 1125K is less than the height of the yoke 1121A of the core 1121. In this way, when the outer surface of the core 1121 is injection-molded, the force-bearing member 1125K can also be coated to make the force-bearing member 1125K fit more closely with the yoke 1121A, further improving the structural strength of the core 1121.

[0512] For some examples, see Fig.59 and Fig.60 , Fig.59 for Fig.53 The structural diagram of the force bearing member 1125K in the iron core 1121 is shown in FIG. Fig.60 for Fig.59 The schematic diagram of the structure of the force-bearing member 1125K shown in a relative perspective. A first recessed portion 1125M is formed on the outer circumference of the force-bearing member 1125K. A first protrusion is formed on the inner circumference of the yoke 1121A. The first protrusion is located in the first recessed portion 1125M. In this way, the first recessed portion 1125M can limit the first protrusion, thereby preventing the force-bearing member 1125K from rotating circumferentially relative to the yoke 1121A, so as to further improve the fastening of the force-bearing member 1125K and the yoke 1121A, and improve the structural strength of the iron core 1121.

[0513] Exemplarily, the first recessed portion 1125M may extend along the axial direction of the core 1121. The first protruding portion may also extend along the axial direction of the core 1121.

[0514] In some examples, the force-bearing member 1125K is formed with a second recessed portion 1125N on one side in the axial direction of the iron core 1121. A second protrusion is formed on the inner circumferential surface of the yoke 1121A. The second protrusion is located in the second recessed portion 1125N. In this way, the second protrusion can limit the second recessed portion 1125N, thereby further preventing the force-bearing member 1125K from rotating in the circumferential direction relative to the yoke 1121A, so as to further improve the fastening of the force-bearing member 1125K and the yoke 1121A, and improve the structural strength of the iron core 1121.

[0515] Exemplarily, the second recessed portion 1125N may be a notch provided on the force bearing member 1125K. The second protruding portion may be an injection molded part, that is, the second protruding portion located in the second recessed portion 1125N is formed by injection molding on the iron core 1121 .

[0516] In some examples, a third protrusion 1125P is formed on the inner circumference of the force-bearing member 1125K. A third recess is formed on the outer circumference of the center rod 111. The center rod 111 is inserted into the force-bearing member 1125K, and the third protrusion 1125P is located in the third recess. In this way, the third protrusion 1125P can limit the third recess, thereby preventing the force-bearing member 1125K and the center rod 111 from rotating relative to each other in the circumferential direction, thereby preventing the iron core 1121 and the center rod 111 from rotating relative to each other in the circumferential direction, so as to improve the stability of the connection between the iron core 1121 and the center rod 111.

[0517] Exemplarily, the third protrusion 1125P may extend along the axial direction of the core 1121 . The third recess may also extend along the axial direction of the core 1121 .

[0518] In some embodiments of this application, please refer to Fig.61 and Fig.62 , Fig.61 for Figure 5 The schematic diagram of the arrangement of the iron core 1121 in the winding assembly 112 in the motor 1 is shown. Fig.62 for Fig.61 The front view of the core 1121 is shown in FIG. The plurality of cores 1121 include a first end core 1126A, a second end core 1126B, and a middle core 1126C. The middle core 1126C is disposed between the first end core 1126A and the second end core 1126B.

[0519] The first end core 1126A is provided with a first magnetic isolation groove 1126D, which is recessed from a side surface of the first end core 1126A facing away from the second end core 1126B toward the second end core 1126B. The second end core 1126B is provided with a second magnetic isolation groove 1126E, which is recessed from a side surface of the second end core 1126B facing away from the first end core 1126A toward the first end core 1126A.

[0520] By setting a first magnetic isolation groove 1126D in the first end iron core 1126A and a second magnetic isolation groove 1126E in the second end iron core 1126B, it is possible to form a closed loop along a smaller path at both ends of the winding assembly 112 along the axial direction of the center rod 111 during the transmission of magnetic lines of force in the iron core 1121 and return to the interior of the iron core 1121, so as to reduce magnetic leakage, thereby improving the thrust density of the motor 1 and improving the performance of the motor 1.

[0521] The first magnetic isolation groove 1126D can make the end surface of the first end core 1126A have several end surfaces with different axial heights, and the second magnetic isolation groove 1126E can make the end surface of the second end core 1126B have several end surfaces with different axial heights. The phase and size of the magnetic resistance can be adjusted by the staggered height difference and the area of ​​the staggered end surfaces, so as to achieve the effect of reducing the magnetic resistance.

[0522] In some examples, the first magnetic isolation groove 1126D extends along the circumference of the first end core 1126A. The second magnetic isolation groove 1126E extends along the circumference of the second end core 1126B. In this way, the first blocking groove 1124A and the second blocking groove 1124B can allow the magnetic lines of force to form a closed loop at more locations along a smaller path and return to the inside of the core 1121 to reduce magnetic leakage.

[0523] For some examples, see Fig.63 and Fig.64 , Fig.63 for Fig.61 The schematic diagram of the structure of the first end iron core 1126A in the iron core 1121 is shown. Fig.64 for Fig.61 The schematic diagram of the structure of the second end core 1126B in the core 1121 is shown. The inner circumference of the first end core 1126A is formed with a first limiting protrusion 1126F, and the inner circumference of the second end core 1126B is formed with a second limiting protrusion 1126G. The outer circumference of the center rod 111 is formed with a first limiting groove and a second limiting groove, the first limiting protrusion 1126F is located in the first limiting groove, and the second limiting protrusion 1126G is located in the second linear groove.

[0524] The first limiting protrusion 1126F cooperates with the first limiting groove to prevent the first end core 1126A from rotating relative to the center rod 111 in the circumferential direction, so that the first end core 1126A and the center rod 111 cooperate more stably. The second limiting protrusion 1126G cooperates with the second limiting groove to prevent the second end core 1126B and the center rod 111 from rotating relative to the circumferential direction, so that the second end core 1126B and the center rod 111 cooperate more stably.

[0525] In some embodiments, see Fig.65 and Fig.66 , Fig.65 for Fig.63 The cross-sectional structure diagram of the first end core 1126A is shown, Fig.66 for Fig.64 The cross-sectional structure diagram of the second end core 1126B is shown. The core 1121 further includes a first tooth crown 1126H, which is arranged at the outer edge of the tooth portion 1121B and is arranged around the tooth portion 1121B. Along the radial direction of the core 1121, the projection of the tooth portion 1121B does not exceed the projection range of the first tooth crown 1126H.

[0526] The provision of the first tooth crown 1126H can optimize the width of the outer edge of the accommodating groove 1123 in the axial direction of the center rod 111, thereby optimizing the magnetic field distribution, further reducing the magnetic resistance, and improving the performance of the motor 1.

[0527] Exemplarily, the first end core 1126A is provided with a first tooth crown 1126H, which can optimize the magnetic field distribution at the edge of the first end core 1121 and improve the performance of the motor 1.

[0528] Exemplarily, the second end core 1126B is provided with a first tooth crown 1126H, so as to optimize the magnetic field distribution at the edge of the second end core 1121 and improve the performance of the motor 1.

[0529] Exemplarily, the middle iron core 1126C is provided with a first tooth crown 1126H, which can optimize the magnetic field distribution at the edge of the middle iron core 1126C and improve the performance of the motor 1.

[0530] In some examples, the first tooth crown 1126H protrudes along the axial direction of the core 1121 to at least one side of the tooth portion 1121B of the core 1121. That is, the first tooth crown 1126H may protrude to the upper side of the tooth portion 1121B, may protrude to the lower side of the core 1121, or may protrude to both the upper side and the lower side of the tooth portion 1121B.

[0531] In some examples, the first crown 1126H is formed with a first slope 1126M and a second slope 1126N. The first slope 1126M and the second slope 1126N are arranged along the axial direction of the core 1121, and the distance between the first slope 1126M and the second slope 1126N gradually increases from the outer circumference of the core 1121 to the inner circumference.

[0532] Exemplarily, the first inclined surface 1126M is located above the second inclined surface 1126N, and the upper end of the first inclined surface 1126M is closer to the yoke 1121A of the core 1121 than the lower end of the first inclined surface 1126M. The lower end of the second inclined surface 1126N is closer to the yoke 1121A of the core 1121 than the upper end of the second inclined surface 1126N.

[0533] By setting the first bevel 1126M and the second bevel 1126N, the magnetic lines of force can be guided to transition more smoothly at the outer edge of the core 1121, so as to reduce the sudden change of the magnetic lines of force and optimize the magnetic field distribution of the core 1121, further reduce the magnetic resistance and improve the performance of the motor 1.

[0534] In some embodiments of this application, please refer to Fig.67 , Fig.67 for Figure 5 Schematic diagram of the relationship between the iron core 1121 and the center rod 111 in the motor 1 shown. The iron core 1121 is provided with a wire groove 1127A. The wire groove 1127A is recessed from the outer circumference of the iron core 1121 toward the inner circumference, and the wire groove 1127A penetrates the iron core 1121 along the axial direction of the iron core 1121. Along the axial direction of the iron core 1121, the projections of the wire grooves 1127A of multiple iron cores 1121 overlap, so that the wire grooves 1127A of multiple iron cores 1121 form a wire channel 1127B. The wire channel 1127B is used to accommodate the wire connection section 1122A of the coil 1122, and the wire connection section 1122A is used to connect adjacent coils 1122 of the same phase.

[0535] By arranging the wire connection section 1122A of the coil 1122 in the wire passage 1127B, the wire connection section 1122A of the coil 1122 can be limited by the wire passage 1127B, thereby improving the position stability of the wire connection section 1122A. In addition, compared with arranging the wire connection section 1122A on the outside of the iron core 1121, arranging the wire connection section 1122A in the wire passage 1127B can also reduce the space occupied by the wire connection section 1122A, thereby making the motor 1 more compact.

[0536] It should be noted that, since the coil 1122 has three-phase conductors, the conductor connection segments 1122A of each phase conductor need to be connected together. Therefore, the number of the wire passages 1127B can be three. The three wire passages 1127B are arranged at intervals along the circumference of the iron core 1121. The conductor connection segment 1122A of each phase conductor is arranged in one wire passage 1127B to avoid mutual interference between the three-phase conductors.

[0537] In some embodiments, see Fig.68 and Fig.69 , Fig.68 for Fig.67 The schematic structural diagram of the center rod 111 is shown in FIG. Fig.69 for Fig.68 The cross-sectional structure diagram of the center rod is shown. The center rod 111 includes a first rod segment 111A and a second rod segment 111B. The winding assembly 112 is connected to the second rod segment 111B. The first rod segment 111A is provided with an outlet channel 111E. The coil 1122 closest to the first rod segment 111A in the same phase includes an outlet head 1122B. The outlet head 1122B is provided in the outlet channel 111E and is used to connect the outlet wire of the winding assembly 112. The outlet wire is passed through the outlet channel 111E and is used to connect the plug-in component.

[0538] Through the above arrangement, after the wire connecting sections 1122A of the coils 1122 of the same phase are connected, they extend into the outlet channel 111E in the center rod 111 through the outlet head 1122B and are connected to the outlet wires arranged in the outlet channel 111E. The outlet wires are connected to the connectors to connect to the motor controller or power supply through the connectors, so as to facilitate the power supply to the coils 1122 and control the current size and flow direction of the coils 1122.

[0539] An outlet channel 111E is set in the center rod 111, and the outlet head 1122B and the outlet wire can be limited and protected by the outlet channel 111E, thereby improving the position stability of the outlet head 1122B and the outlet wire, and preventing the outlet head 1122B and the outlet wire from being damaged and affecting the performance of the motor 1.

[0540] For some examples, see Fig.69 , the outlet channel 111E includes a radial hole 111F and an axial hole 111G. The radial hole 111F is connected to the axial hole 111G. The axial hole 111G extends along the axial direction of the center rod 111. Specifically, the axial hole 111G extends from the side surface of the first rod segment 111A facing away from the second rod segment 111B toward the second rod segment 111B. The radial hole 111F extends along the radial direction of the center rod 111. Specifically, the radial hole 111F is provided at one end of the first rod segment 111A facing the second rod segment 111B, and penetrates from the outer circumference of the first rod segment 111A to the inner circumference.

[0541] By providing the axial hole 111G, the outgoing wire can be conveniently arranged in the axial hole 111G, so as to limit and protect the outgoing wire through the axial hole 111G. By providing the radial hole 111F, the outgoing wire head 1122B of the coil 1122 can conveniently pass through the radial hole 111F and extend into the axial hole 111G to be connected with the outgoing wire.

[0542] In some examples, the outlet channel 111E is disposed inside the first rod segment 111A. By disposing the outlet channel 111E inside the first rod segment 111A, the center rod 111 can better protect the outlet wires and the outlet head 1122B.

[0543] In some embodiments of this application, please refer to Fig.70 and Fig.71 , Fig.70 for Figure 5 The schematic diagram of the sealing relationship between the central rod 111 and the housing 121 and the guide rod 123 in the motor 1 is shown. Fig.71 for Fig.70 One of the partial structural diagrams of the motor 1 is shown. The motion assembly 12 also includes a first linear bearing 124. The first linear bearing 124 is disposed in the second mounting hole 1211 and connected to the housing 121. The center rod 111 is penetrated by the first linear bearing 124 and is slidably connected to the first linear bearing 124.

[0544] By disposing the first linear bearing 124 , the center rod 111 and the housing 121 can slide relative to each other more smoothly, thereby reducing the system resistance when the motor 1 is working and improving the performance of the motor 1 .

[0545] In some embodiments, the motion assembly 12 further includes a first seal 125 and a second seal 126. The first seal 125 is disposed between the inner wall of the second mounting hole 1211 and the center rod 111. The second seal 126 is disposed between the inner wall of the second mounting hole 1211 and the center rod 111. The first linear bearing 124 is disposed between the first seal 125 and the second seal 126.

[0546] The first sealing member 125, the second sealing member 126, the center rod 111 and the inner wall surface of the mounting hole form a first oil storage cavity, and lubricating liquid is provided in the first oil storage cavity.

[0547] Through the above arrangement, the first seal 125 and the second seal 126 can seal the lubricating liquid between the center rod 111 and the first linear bearing 124. In this way, during the relative movement of the center rod 111 and the housing 121, the lubricating liquid can lubricate the center rod 111 and the first linear bearing 124 to further reduce the friction between the center rod 111 and the first linear bearing 124, so as to further reduce the system resistance when the motor 1 is working.

[0548] Moreover, the lubricating liquid can also reduce the wear between the center rod 111 and the first linear bearing 124, thereby increasing the service life of the center rod 111 and the first linear bearing 124. In addition, the supply structure of the lubricating liquid is relatively simple, which facilitates the assembly of the various components of the motor 1.

[0549] In some examples, the housing 121 is provided with an oil filling hole 1212. The oil filling hole 1212 penetrates from the outer wall surface of the housing 121 to the first oil storage chamber. The motion component 12 further includes a blocking member 127. The blocking member 127 is detachably connected to the oil filling hole 1212.

[0550] By providing the oil filling hole 1212 and the sealing member 127 being detachably connected to the oil filling hole 1212, the sealing member 127 can be conveniently disassembled and assembled in the oil filling hole 1212, thereby facilitating replacement of the lubricating fluid in the first oil storage chamber through the oil filling hole 1212 to ensure the lubricating performance of the lubricating fluid in the first oil storage chamber.

[0551] In some examples, the blocking member 127 may be a screw plug. In other examples, the blocking member 127 may also be a component such as a rubber plug that can block the oil filling hole 1212.

[0552] In some examples, the first seal 125 is a lip seal. And the first seal 125 is disposed on the side of the first linear bearing 124 facing away from the lower fork arm 13. For details, please continue to refer to Fig.71 The sealing bracket 128 is disposed on the outer side of the housing 121 and is detachably connected to the top wall of the housing 121. Exemplarily, the sealing bracket 128 can be connected to the top wall by screw connection, clamping connection, etc.

[0553] A portion of the first seal 125 is disposed between the top wall and the seal bracket 128, and the seal bracket 128 and the top wall can clamp the first seal 125 from both sides of the first seal 125, thereby fixing the first seal 125 on the housing 121. In this way, the first seal 125 is installed outside the housing 121, so that it is not limited by space, which facilitates the installation of the first seal 125.

[0554] For some examples, see Fig.72 , Fig.72 for Fig.70The schematic diagram of the structure of the first seal 125 in the motor 1 is shown. The first seal 125 includes an annular seal portion 1251 and a support portion 1252. The inner circumference of the annular seal portion 1251 contacts the center rod 111. Specifically, the center rod 111 is inserted into the annular seal portion 1251 and abuts against the inner wall surface of the annular seal portion 1251.

[0555] The support portion 1252 is connected to the outer circumferential surface of the annular sealing portion 1251 and is arranged around the annular sealing portion 1251. The support portion 1252 is arranged between the top wall and the sealing bracket 128. Specifically, the support portion 1252 can surround the annular sealing portion 1251. Through the arrangement of the annular sealing portion 1251 and the support portion 1252, it is convenient to fix the first sealing member 125 through the sealing bracket 128, and the first sealing member 125 can seal the gap between the center rod 111 and the inner wall surface of the second mounting hole 1211.

[0556] The annular sealing portion 1251 may also be a cylindrical, elliptical or irregular cylindrical structure, or a circular, elliptical or irregular annular sheet structure, as long as the gap between the center rod 111 and the inner wall of the second mounting hole 1211 can be sealed.

[0557] In some examples, the support portion 1252 may be a sheet-like structure. In other examples, the radial cross-section of the support portion 1252 may be square, circular, elliptical, etc., wherein the radial cross-section passes through the axis of the support portion 1252 .

[0558] For other examples, see Fig.73 , Fig.73 for Fig.72 The front view of the first sealing member 125 is shown. The two ends of the annular sealing portion 1251 along the axial direction are respectively a first sealing end 1251A and a second sealing end 1251B. Along the axial direction of the annular sealing portion 1251, the support portion 1252 is located between the first sealing end 1251A and the second sealing end 1251B.

[0559] That is to say, along the axial direction of the annular sealing portion 1251, the annular sealing portion 1251 extends to both sides of the supporting portion 1252. In this way, the structural strength of the first sealing member 125 can be enhanced, and when the center rod 111 and the first sealing member 125 slide relatively, parts of the annular sealing portion 1251 and the center rod 111 on both sides of the supporting portion 1252 in the axial direction of the first sealing member 125 rub against each other, thereby reducing the large shaking of the annular sealing portion 1251 in the axial direction, thereby improving the sealing effect.

[0560] In some examples, part of the annular sealing portion 1251 is located in the second mounting hole 1211 and contacts the inner wall surface of the second mounting hole 1211. In this way, the gap between the center rod 111 and the inner wall surface of the second mounting hole 1211 can be further sealed to improve the sealing effect.

[0561] In some examples, such as Fig.74 As shown, Fig.74 for Fig.73 In the FF cross-sectional structural diagram, when the annular sealing portion 1251 is in a free state (i.e., the state when the first sealing member 125 is not installed on the housing 121), along the axial direction of the annular sealing portion 1251, the inner circumferential surface of the annular sealing portion 1251 and the axis of the annular sealing portion 1251 (such as Fig.74 The spacing between the vertical dashed lines shown in Fig.74 The distance L3) shown first increases and then decreases.

[0562] That is, the inner edge of the radial cross section of the annular sealing portion 1251 is an arc, and the concave side of the arc faces the axis of the annular sealing portion 1251. Alternatively, the inner edge of the radial cross section of the annular sealing portion 1251 is two intersecting line segments, and the angle formed by the intersection of the two line segments faces the axis of the annular sealing portion 1251. The radial cross section of the annular sealing portion 1251 passes through the axis of the annular sealing portion 1251.

[0563] The distance between the inner circumference of the annular sealing portion 1251 and the axis of the annular sealing portion 1251 first increases and then decreases. When the annular sealing portion 1251 abuts against the center rod 111, the annular sealing portion 1251 is more easily deformed, so that the annular sealing portion 1251 and the center rod 111 can fit more closely, thereby improving the sealing effect of the annular sealing portion 1251.

[0564] In some embodiments, see Fig.75 , Fig.75 for Fig.70 The three-dimensional structure diagram of the sealing bracket 128 in the motor 1 is shown. The sealing bracket 128 includes a main body 1281 and a connecting portion 1282. The main body 1281 is located on the side of the support portion 1252 facing away from the top wall. The main body 1281 contacts the surface of the side of the support portion 1252 facing away from the top wall, so that the support portion 1252 is clamped from both sides of the support portion 1252 by the main body 1281 and the top wall, so that the support portion 1252 is fixed on the housing 121.

[0565] The connecting portion 1282 is connected to the main body 1281, and the connecting portion 1282 is connected to the housing 121. Exemplarily, the connecting portion 1282 is a flange structure, and a plurality of bolt holes are arranged at intervals along the circumference of the first sealing member 125 on the connecting portion 1282, and the connection between the connecting portion 1282 and the housing 121 is achieved by bolts passing through the bolt holes and being screwed to the top wall.

[0566] Exemplarily, the connection portion 1282 may also be a snap-fit ​​structure, for example, the connection portion 1282 is a snap-fit ​​protrusion arranged around the main body 1281, and the connection between the connection portion 1282 and the shell 121 is achieved by snapping the snap-fit ​​protrusion into a snap-fit ​​groove on the top wall.

[0567] like Fig.76 and Fig.77 As shown, Fig.76 for Fig.70 One of the schematic diagrams of the positional relationship between the sealing bracket 128 and the first sealing member 125 in the motor 1 is shown. Fig.77 for Fig.70 The second schematic diagram of the positional relationship between the sealing bracket 128 and the first sealing member 125 in the motor 1 is shown. Fig.76 and Fig.77 The seal support 128 and the first seal 125 are respectively observed from the perspective of both sides of the first seal 125 in the axial direction.

[0568] The connection part 1282 is arranged around the support part 1252. That is, the support part 1252 is located inside the connection part 1282. And the annular sealing part 1251 is located between the sealing bracket 128 and the center rod 111. In this way, the connection part 1282 can cover the support part 1252, so that the sealing bracket 128 can cover the first sealing member 125, so as to protect the first sealing member 125 and prevent the first sealing member 125 from leaking out and being damaged.

[0569] Furthermore, the connecting portion 1282 can be in direct contact with and connected to the top wall, so as to reduce the gap between the sealing bracket 128 and the top wall and improve the aesthetics of the motor 1.

[0570] In some other examples, the first sealing member 125 may also be a sealing member with other structures such as a sealing ring.

[0571] In some examples, the second seal 126 may be a sealing ring, a lip seal, or the like.

[0572] In some embodiments, see Fig.70 and Fig.78 , Fig.78 for Fig.70The second schematic diagram of the partial structure of the motor 1 is shown. The center rod 111 is provided with a guide hole 111D extending along the axial direction of the center rod 111. The guide rod 123 is located inside the housing 121, and at least a portion of the guide rod 123 is located in the guide hole 111D. The fixing assembly 11 also includes a second linear bearing 114, which is provided in the guide hole 111D and connected to the center rod 111, and the guide rod 123 is passed through the second linear bearing 114 and is slidably connected to the second linear bearing 114.

[0573] By disposing the second linear bearing 114 , the center rod 111 and the guide rod 123 can slide relative to each other more smoothly, thereby reducing the system resistance when the motor 1 is working and improving the performance of the motor 1 .

[0574] In some examples, the second linear bearing 114 may be the structure of the bearing assembly 113 described above, or may be a cylindrical linear bearing structure.

[0575] In some embodiments, please refer to Fig.70 and Fig.78 The guide rod 123 and the inner wall surface of the guide hole 111D form a second oil storage chamber 111M, and lubricating liquid is provided in the second oil storage chamber 111M. Exemplarily, the second oil storage chamber 111M may include a gap between the guide rod 123 and the inner wall surface of the center rod 111 in the radial direction of the center rod 111, and a partial space of the guide hole 111D located on the side of the guide rod 123 facing away from the lower fork arm 13.

[0576] The fixing assembly 11 further includes a third sealing member 115. The third sealing member 115 is disposed between the inner wall of the guide hole 111D and the guide rod 123. The second linear bearing 114 is located on the side of the third sealing member 115 facing the second oil storage chamber 111M. That is, the third sealing member 115 is located on the side of the second linear bearing 114 facing the lower fork arm 13.

[0577] In this way, the lubricating liquid can enter the gap between the second linear bearing 114 and the guide rod 123. When the guide rod 123 and the center rod 111 move relative to each other, the lubricating liquid can lubricate the second linear bearing 114 and the guide rod 123 to reduce the friction between the guide rod 123 and the second linear bearing 114, thereby further reducing the system resistance when the motor 1 is working.

[0578] Moreover, the lubricant can also reduce the wear between the guide rod 123 and the second linear bearing 114, and improve the service life of the guide rod 123 and the second linear bearing 114. In addition, the lubricant supply structure is relatively simple and compact, which facilitates the assembly of the various components of the motor 1 and the compactness of the motor 1.

[0579] In some embodiments of this application, please refer to Fig.79 , Fig.79 for Figure 2 The schematic diagram of the connection relationship between the motor 1 and the buffer body in the suspension system 300 is shown. The suspension system 300 also includes an upper support assembly 2 and a buffer body 3. The upper support assembly 2 is arranged outside the shell 121 and connected to the center rod 111. The upper support assembly 2 is connected to the vehicle body 100. The buffer body 3 is connected to the side of the upper support assembly 2 facing the shell 121.

[0580] That is to say, the buffer body 3 is arranged between the upper support component 2 and the shell 121. In this way, when the fixed component 11 and the moving component 12 move relative to each other to the compression limit position (that is, the fixed component 11 and the moving component 12 move relative to each other to the limit position), the shell 121 can contact the buffer body 3 so that the buffer body 3 is compressed, so as to limit and buffer the shell 121 through the buffer body 3. When the fixed component 11 and the moving component 12 move in opposite directions, the compressed buffer body 3 will reset. In this way, the buffer body 3 can buffer the impact of the road surface and improve the comfort of the vehicle 1000.

[0581] In some examples, the buffer body 3 may be a buffer structure made of flexible materials such as rubber and latex.

[0582] In some embodiments, see Fig.80 and Fig.81 , Fig.80 for Fig.79 The schematic diagram of the connection relationship between the upper support assembly 2 and the buffer body 3 in the suspension system 300 is shown. Fig.81 for Fig.80 Schematic diagram of the cross-sectional structure of the middle upper support assembly 2 and the buffer body 3. The upper support assembly 2 includes an outer bracket 22 and a connecting assembly 23. The outer bracket 22 is provided with an installation space 221 and a first avoidance hole 222. Exemplarily, the installation space 221 can be recessed toward the shell 121 from a side surface of the outer bracket 22 facing away from the shell 121. The first avoidance hole 222 can penetrate from a side surface of the outer bracket 22 facing the shell 121 to the installation space 221 to communicate with the installation space 221.

[0583] The center rod 111 is inserted into the first avoidance hole 222 , and the buffer body 3 is connected to the side of the outer bracket 22 facing the housing 121 . The connecting assembly 23 is disposed in the installation space 221 and connects the outer bracket 22 and the center rod 111 .

[0584] By integrating the buffer body 3 on the outer bracket 22 of the upper support assembly 2, the overall structure of the buffer body 3 and the upper support assembly 2 can be simplified. When installing the buffer body 3 and the upper support assembly 2, the buffer body 3 and the upper support assembly 2 can be connected to the center rod 111 as a whole, thereby facilitating the installation of the buffer body 3 and the upper support assembly 2.

[0585] In some examples, the buffer body 3 and the outer bracket 22 are an integral structure. Exemplarily, the buffer body 3 and the outer bracket 22 can be formed into an integral structure through a vulcanization process. In this way, the connection between the buffer body 3 and the outer bracket 22 can be more stable.

[0586] In some examples, the buffer body 3 is spaced apart from the center rod 111. In this way, during the relative movement between the center rod 111 and the housing 121, the buffer body 3 and the center rod 111 do not rub against each other, thereby reducing the friction resistance caused by the buffer body 3 to the center rod 111, thereby improving the performance of the motor 1.

[0587] In some embodiments, see Fig.82 , Fig.82 for Fig.79 The enlarged schematic diagram of the structure at P9 in the figure. The connecting assembly 23 includes an inner sleeve 231, a fixing member 232, a cover plate 233 and a fourth sealing member 234. The inner sleeve 231 is connected to the outer bracket 22 and is arranged around the center rod 111. The fixing member 232 is arranged on the side of the inner sleeve 231 facing away from the shell 121 and is threadedly connected to the center rod 111. The inner sleeve 231 is used to support the fixing member 232 to improve the stability of the connection between the fixing member 232 and the center rod 111.

[0588] Exemplarily, the fixing member 232 may be a nut. The center rod 111 is provided with an external thread. The fixing member 232 is sleeved on the center rod 111 and is threadedly connected to the center rod 111 .

[0589] Exemplarily, the inner sleeve 231 can be made of a flexible material such as rubber or plastic, and the inner sleeve 231 also has a certain hardness to support the fixing member 232 .

[0590] The cover plate 233 is disposed on a side of the inner sleeve 231 facing away from the housing 121 and is disposed around the fixing member 232. The cover plate 233 is connected to the outer bracket 22. The fourth sealing member 234 is connected between the cover plate 233 and the fixing member 232.

[0591] By setting the fourth seal 234 between the cover plate 233 and the fixing member 232, the fourth seal 234 can seal the gap between the cover plate 233 and the fixing member 232, thereby preventing external impurities from entering the installation space 221 of the outer bracket 22, thereby preventing impurities from affecting components in the installation space 221, such as the inner sleeve 231, so as to ensure the stability of the motor 1 during operation.

[0592] In some examples, the fourth sealing member 234 can be expanded and contracted along the radial direction of the cover plate 233. For example, the fourth sealing member 234 can be made of elastic materials such as rubber and latex. In this way, when the fourth sealing member 234 is subjected to tension, the fourth sealing member 234 can be elastically deformed, thereby preventing the fourth sealing member 234 from being damaged.

[0593] In some examples, the fourth seal 234 is in the shape of an annular corrugated plate, and the corrugated portion of the fourth seal 234 extends along the circumference of the cover plate 233. The radial section of the fourth seal 234 is corrugated, wherein the radial section passes through the axis of the fourth seal 234.

[0594] At this time, the material of the fourth sealing member 234 may include at least one of rubber, plastic, asbestos, and metal. For example, the fourth sealing member 234 may be made of elastic materials such as rubber and latex, or plastic and asbestos, or metal such as aluminum, iron, copper, aluminum alloy, stainless steel, etc. For example, part of the fourth sealing member 234 may be made of rubber, and the other part may be made of plastic.

[0595] Since the fourth sealing member 234 is in an annular corrugated shape, when the fourth sealing member 234 is subjected to tension, the fourth sealing member 234 can expand and contract, thereby preventing the fourth sealing member 234 from being damaged.

[0596] In some embodiments, please refer to Fig.82 The suspension system 300 further includes a fifth sealing member 4 . The fifth sealing member 4 is disposed between the inner wall surface of the inner bushing 231 and the center rod 111 .

[0597] In this way, the gap between the inner wall surface of the inner sleeve 231 and the center rod 111 can be sealed by the fifth seal 4, thereby preventing impurities from entering the installation space 221 through the gap between the inner wall surface of the inner sleeve 231 and the center rod 111 and affecting the motor 1, thereby improving the working performance of the motor 1.

[0598] In some examples, the fifth sealing member 4 may be a sealing ring.

[0599] In some embodiments, see Fig.83 , Fig.83 for Figure 4 The center rod 111 is provided with a plug hole 111N. For example, the plug hole 111N can overlap with the outlet channel 111E in the center rod 111.

[0600] The fixing assembly 11 further includes a plug connector 116 and at least one sixth sealing member 117. The plug connector 116 is used to connect the outgoing wires of the winding assembly 112, and a portion of the plug connector 116 is accommodated in the plug hole 111N. In this way, the plug connector 116 can be limited by the plug hole 111N to facilitate the connection between the plug connector 116 and the center rod 111.

[0601] Exemplarily, the connector 116 and the center rod 111 may be connected by means of snap connection, screw connection, or the like.

[0602] At least one sixth sealing member 117 is disposed between the inner wall of the plug hole 111N and the plug connector 116. That is, the portion of the plug connector 116 extending into the plug hole 111N passes through the sixth sealing member 117, and the sixth sealing member 117 abuts against the portion of the plug connector 116 extending into the plug hole 111N and the inner wall of the plug hole 111N, respectively, so that the gap between the portion of the plug connector 116 extending into the plug hole 111N and the inner wall of the plug hole 111N is sealed by the sixth sealing member 117 to prevent foreign matter from entering the plug hole 111N, thereby protecting the outgoing wires.

[0603] In some examples, the number of the sixth sealing member 117 may be one or more. When the number of the sixth sealing member 117 is more than one, the plurality of sixth sealing members 117 are arranged at intervals along the axial direction of the center rod 111. The plurality of sixth sealing members 117 can perform multi-stage sealing on the gap between the portion of the connector 116 extending into the plug hole 111N and the inner wall surface of the plug hole 111N, thereby improving the sealing effect.

[0604] Furthermore, even if one sixth sealing member 117 is damaged, the gap between the portion of the connector 116 extending into the insertion hole 111N and the inner wall surface of the insertion hole 111N can be sealed.

[0605] In some examples, the second sealing structure is also a sealing ring.

[0606] In some embodiments, see Figure 3 and Fig.84 , Fig.84 for Figure 4 The suspension system 300 further includes a dustproof sleeve 5. The dustproof sleeve 5 is sleeved on the outer side of the shell 121, and one end of the dustproof sleeve 5 is connected to the upper support assembly 2, and the other end of the dustproof sleeve 5 is connected to the shell 121. The dustproof sleeve 5 can be extended and retracted along the axial direction of the shell 121.

[0607] The dustproof sleeve 5 can be used to isolate impurities outside the dustproof sleeve 5, thereby preventing impurities from entering the gap between the inner wall surface of the second mounting hole 1211 and the center rod 111, and preventing impurities from entering the shell 121 through the gap between the inner wall surface of the second mounting hole 1211 and the center rod 111, thereby making the relative sliding of the center rod 111 and the shell 121 smoother and more stable, and ensuring the working performance of the motor 1.

[0608] During operation of the motor 1, the housing 121 slides relative to the center rod 111 and the upper support assembly 2, thereby generating a pulling force or a squeezing force on the dust sleeve 5. To prevent the dust sleeve 5 from being damaged by the pulling force or the squeezing force, the dust sleeve 5 can be extended and retracted along the axial direction of the housing 121.

[0609] Exemplarily, the dust sleeve 5 can be made of elastic materials such as rubber, latex, etc. In this way, when the housing 121 slides relative to the central rod 111 and the upper support assembly 2, the dust sleeve 5 is subjected to elastic deformation, thereby avoiding damage to the dust sleeve 5.

[0610] Exemplarily, the dust sleeve 5 is in a bellows-like structure. In this case, the dust sleeve 5 can be made of elastic materials such as rubber and latex, or plastic, asbestos, or metal materials such as aluminum, iron, copper, aluminum alloy, stainless steel, etc. Since the dust sleeve 5 is in a bellows-like structure, when the housing 121 slides relative to the center rod 111 and the upper support assembly 2, the dust sleeve 5 can be extended and retracted accordingly, thereby preventing the dust sleeve 5 from being damaged.

[0611] In some examples, the elastic element 3A is sleeved on the outside of the dustproof sleeve 5 .

[0612] In some embodiments of this application, please refer to Fig.85 , Fig.85 for Figure 5 The schematic diagram of the matching relationship between the central rod 111 and the winding assembly 112 in the motor is shown. The central rod 111 is provided with a first positioning portion 111H, and the winding assembly 112 is provided with a second positioning portion 112P. The first positioning portion 111H and the second positioning portion 112P cooperate to make the central rod 111 and the winding assembly 112 relatively stationary.

[0613] Through the cooperation of the first positioning portion 111H and the second positioning portion 112P, the center rod 111 and the winding assembly 112 can be kept relatively still to avoid circumferential rotation of the center rod 111 and the winding assembly 112 when the motor 1 is working, thereby ensuring the working stability of the motor 1 and improving the performance of the motor 1.

[0614] In some examples, the first positioning portion 111H is formed as a groove provided on the outer peripheral wall of the center rod 111, and the second positioning portion 112P is formed as a groove provided on the winding assembly 112. The anti-rotation rod 111K is provided between the first positioning portion 111H and the second positioning portion 112P.

[0615] By arranging the anti-rotation rod 111K on the first positioning portion 111H and the second positioning portion 112P, the anti-rotation rod 111K can be matched with the groove on the outer peripheral wall of the center rod 111 to limit the center rod 111, and the anti-rotation rod 111K can be matched with the groove of the winding assembly 112 to limit the winding assembly 112, thereby preventing the winding assembly 112 and the center rod 111 from circumferential rotation.

[0616] In some examples, the groove provided in the winding assembly 112 can be specifically provided on the inner wall surface of the iron core 1121 .

[0617] In some other examples, one of the first positioning portion 111H and the second positioning portion 112P is a positioning groove, and the other of the first positioning portion 111H and the second positioning portion 112P is a positioning protrusion. The positioning protrusion is engaged in the positioning groove to limit the core rod and the winding assembly 112, thereby preventing the core rod and the winding assembly 112 from rotating in the circumferential direction.

[0618] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A suspension system, characterized in that: include: A motor, the motor being suitable for being connected between a body (100) and a wheel (200) of a vehicle to adjust the distance between the body (100) and the wheel (200); The motor comprises a permanent magnet (122) and a winding assembly (112), one of the permanent magnet (122) and the winding assembly (112) being suitable for connection with the vehicle body (100), and the other of the permanent magnet (122) and the winding assembly (112) being suitable for connection with a wheel (200); the permanent magnet (122) cooperates with the winding assembly (112) to drive the motor to work; The motor is provided with a cooling channel (14), and the cooling channel (14) is used to cool the winding assembly (112) by controlling the temperature and / or flow rate of a cooling medium in the cooling channel (14), so that the motor at least provides a required thrust corresponding to a current operating condition, and the temperature of the permanent magnet (122) corresponding to the net heat generated by running for at least a target time under the required thrust does not exceed the demagnetization temperature of the permanent magnet (122); The net heat generation is the heat generation of the winding assembly (112) at a given current minus the heat removed by the cooling medium.

2. The suspension system according to claim 1, characterized in that: Under different working conditions of the vehicle, the thrust provided by the motor to the vehicle body (100) is not less than the required thrust corresponding to the current working condition, and under the required thrust corresponding to the current working condition, the maximum continuous working time of the motor is not less than the target time, the target time is the shortest time for the motor to continuously work at the required thrust corresponding to the current working condition to complete the current working condition, the maximum continuous working time of the motor is the maximum time for the temperature of the permanent magnet corresponding to the net heat generated by the continuous working of the motor under the required thrust corresponding to the current working condition to be maintained at no more than the demagnetization temperature of the permanent magnet, wherein the thrust provided by the motor to the vehicle body increases as the impact degree of the road surface on the vehicle body increases.

3. The suspension system according to claim 1, characterized in that: When the vehicle is in a first working condition, the thrust of the motor is not less than a first threshold value F1, and the duration of continuous operation of the motor is not less than T1, and the first threshold values ​​F1 and T1 are used to reduce the impact degree of the vehicle in the first working condition, wherein the first working condition includes a working condition where the vehicle passes through an undulating road surface; When the vehicle is in the second working condition, the thrust of the motor is not less than a second threshold value F2, and the motor continues to work for a duration not less than T2, and the second threshold value F2 and T2 are used to reduce the roll degree of the vehicle when it is in the second working condition, wherein the second working condition includes a turning condition of the vehicle; When the vehicle is in the third working condition, the thrust of the motor is not less than the third threshold value F3, and the duration of continuous operation of the motor is not less than T3, and the third threshold values ​​F3 and T3 are used to reduce the pitch degree of the vehicle along the X direction when the vehicle is in the third working condition, wherein the third working condition includes the working condition of starting and stopping the vehicle; Among them, F1>F2>F3, T1<T2<T3.

4. The suspension system according to claim 1, characterized in that: The relationship between the net heat generation of the motor, the heat generation of the motor and the heat taken away by the cooling medium is: in, E is the net heat generated by the motor, E g is the heat generated by the motor, q c is the heat taken away by the cooling medium, ρ is the density of the cooling medium, v is the volume of the cooling channel, c is the specific heat capacity of the cooling medium, T is the temperature of the motor, t is the cooling time, T ∞ is the temperature of the cooling medium, and R is the thermal resistance of the motor.

5. The suspension system according to any one of claims 1 to 4, characterized in that: The motor further comprises a central rod (111), the winding assembly (112) is arranged on the central rod (111), and the cooling channel (14) is arranged in the central rod (111).

6. The suspension system according to claim 4, characterized in that: The relationship between the thrust of the motor and the maximum duration of continuous operation of the motor is: y=kx n Wherein, y is the maximum duration of continuous operation of the motor, x is the thrust of the motor, k and n are constants, k is a positive number, and n is a negative number.

7. The suspension system according to claim 6, characterized in that: Along the radial direction of the center rod (111), the projection of the cooling channel (14) is a first projection, and the projection of the winding assembly (112) is a second projection; The length of the overlapping portion of the first projection and the second projection in the radial direction of the central rod (111) along the axial direction of the central rod (111) is the overlapping length; k decreases as the overlap length decreases, and n decreases as the overlap length decreases.

8. The suspension system according to claim 5, characterized in that: The projection of the cooling channel (14) in the radial direction of the center rod (111) is a first projection, and along the axial direction of the center rod (111), the length of the first projection is not less than the length of the winding assembly (112).

9. The suspension system according to claim 8, characterized in that The projection of the winding assembly (112) in the radial direction of the central rod (111) is a second projection; The overlapping portion of the first projection and the second projection in the radial direction of the center rod (111) has an overlapping length along the axial direction of the center rod (111); the overlapping length is equal to the length of the second projection in the axial direction of the center rod (111).

10. The suspension system according to claim 9, characterized in that The projection of the winding assembly (112) in the radial direction of the central rod (111) is a second projection; The length of the overlapping portion of the first projection and the second projection in the radial direction of the central rod (111) along the axial direction of the central rod (111) is the overlapping length; The maximum duration for which the motor continues to operate decreases as the overlap length decreases.

11. The suspension system according to claim 5, characterized in that: The winding assembly (112) comprises: A plurality of iron cores (1121), wherein the plurality of iron cores (1121) are arranged in an axial direction of the central rod (111), and a receiving groove (1123) is formed between two adjacent iron cores (1121); A coil (1122), wherein the coil (1122) is accommodated in the accommodation groove (1123).

12. The suspension system according to claim 11, characterized in that The coil (1122) includes three-phase conductors, and the cross-sectional area of ​​each phase of the conductor is greater than or equal to 2.5 square millimeters and less than or equal to 3.5 square millimeters; The length of the conductor of each phase is not less than a first length, and the first length is greater than or equal to 28 meters and less than or equal to 42 meters.

13. The suspension system according to claim 12, characterized in that The resistance of the wire of each phase is not greater than 0.5 ohms.

14. The suspension system according to claim 5, characterized in that The motor serves as a power element and also as an actuator.

15. The suspension system according to claim 14, characterized in that The motor comprises a moving component (12) and a fixed component (11), the fixed component (11) comprises the central rod (111) and the winding component (112), and the moving component (12) and the fixed component (11) are capable of relative movement along the axial direction of the central rod (111); The moving component (12) is formed as the actuator, and the moving component (12) and the fixed component (11) cooperate to form the power component.

16. The suspension system according to claim 15, characterized in that The motion component (12) comprises: a housing (121), wherein a portion of the center rod (111) is located inside the housing (121), the center rod (111) is slidably connected to the housing (121), and the winding assembly (112) is disposed inside the housing (121); a lower fork arm (13), the lower fork arm (13) being connected to the outside of the housing (121) and being suitable for connecting to a wheel (200); and a permanent magnet (122), the permanent magnet (122) being connected to the inner wall surface of the housing (121) and being arranged around the winding assembly (112); The housing (121) and the lower fork arm (13) form the actuator, and the permanent magnet (122) and the winding assembly (112) form the power element.

17. The suspension system according to claim 15, characterized in that The matching gap between the moving component (12) and the fixed component (11) is formed as an electromagnetic gap.

18. The suspension system according to claim 15, characterized in that The motor further comprises a sensor (15), wherein the sensor (15) comprises a read head (151) and a magnetic strip (152), wherein one of the read head (151) and the magnetic strip (152) is arranged on the moving component (12), and the other of the read head (151) and the magnetic strip (152) is arranged on the fixed component (11); The reading head (151) is capable of sensing the magnetic field signal of the magnetic strip (152) to detect the relative displacement between the fixed component (11) and the moving component (12).

19. The suspension system according to claim 5, characterized in that The resistance of the suspension system is less than 150N.

20. The suspension system according to claim 19, characterized in that The motor comprises a moving component (12) and a fixed component (11), the fixed component (11) comprises the central rod (111) and the winding component (112), and the moving component (12) and the fixed component (11) are capable of relative movement along the axial direction of the central rod (111); The motion assembly (12) comprises a guide rod (123), the center rod (111) and the guide rod (123) are nested and matched to form a guide assembly, and the guide stiffness of the guide assembly is not less than 7767N / mm.

21. The suspension system according to claim 20, characterized in that The guide diameter of the guide rod (123) is not less than 23 mm.

22. The suspension system of claim 20, wherein: The elastic modulus of the guide rod (123) and the elastic modulus of the center rod (111) are both not less than 200 GPa.

23. The suspension system of claim 20, wherein: The fixing assembly (11) further comprises a lower fork arm (13), wherein the lower fork arm (13) is suitable for connecting to a wheel (200); The guide rod (123) comprises a rod body (1231) and a base (1232); one end of the rod body (1231) is nested with the center rod (111); the base (1232) is connected to the other end of the rod body (1231) and is detachably connected to the lower fork arm (13); along the axial direction of the rod body (1231), the thickness of the base (1232) is not less than 3 mm.

24. The suspension system of claim 23, wherein: The material of the guide rod (123) includes a first material, the material of the lower fork arm (13) includes a second material, and the density of the first material is not less than the density of the second material.

25. The suspension system of claim 20, wherein: The central rod (111) is provided with a guide hole (111D) extending along the axial direction of the central rod (111), and at least a portion of the guide rod (123) is located in the guide hole (111D); The motion assembly (12) further comprises a bearing assembly (113), wherein the bearing assembly (113) comprises a cylindrical bearing seat (1131) and a plurality of balls (1132), wherein the bearing seat (1131) is disposed in the guide hole (111D) and is fixed to the center rod (111), and the plurality of balls (1132) are embedded in the bearing seat (1131) and are capable of rotating relative to the bearing seat (1131); The guide rod (123) is inserted into the bearing seat (1131) and is in rolling cooperation with the plurality of balls (1132).

26. The suspension system of claim 25, wherein: The guide rod (123) is provided with a guide groove (1233), and the guide groove (1233) is recessed from the peripheral wall surface of the guide rod (123) toward the axis of the guide rod (123) and extends along the axial direction of the guide rod (123). Part of the ball (1132) is located in the guide groove (1233) and is in rolling cooperation with the guide groove (1233).

27. The suspension system of claim 26, wherein: The cross section of the guide groove (1233) is arc-shaped, and the arc matches the ball (1132); the cross section of the guide groove (1233) is perpendicular to the axial direction of the guide rod (123).

28. The suspension system of claim 27, wherein: The friction coefficient of the inner wall surface of the guide groove (1233) is less than or equal to 0.

05.

29. The suspension system of claim 26, wherein: The plurality of rolling balls (1132) include a plurality of groups of rolling balls (1132), and the plurality of groups of rolling balls (1132) are arranged at intervals along the circumference of the guide rod (123); The guide rod (123) is provided with a plurality of guide grooves (1233), and the plurality of guide grooves (1233) are arranged at intervals along the circumference of the guide rod (123), and a group of balls (1132) are rollingly matched with one of the guide grooves (1233).

30. The suspension system of claim 11, wherein: The iron core (1121) comprises: A yoke (1121A), wherein the yoke (1121A) is provided with a first mounting hole (1121C), and the center rod (111) is passed through the first mounting hole (1121C); A tooth portion (1121B), the tooth portion (1121B) is connected to the yoke portion (1121A) and is arranged around the first mounting hole (1121C).

31. The suspension system of claim 30, wherein: The tooth portion (1121B) includes a plurality of separately arranged support members (1121D), and the plurality of support members (1121D) are arranged along the circumferential direction of the yoke portion (1121A) and are connected to the yoke portion (1121A).

32. The suspension system of claim 31, wherein: The tooth portion (1121B) further includes an insulating member, and the insulating member is disposed between any two adjacent support members (1121D).

33. The suspension system of claim 32, wherein: The sides of any two adjacent support members (1121D) facing each other are respectively the first side surface and the second side surface; the insulating member is an insulating coating, and the insulating coating is provided on at least one of the first side surface and the second side surface.

34. The suspension system of claim 31, wherein: The tooth portion (1121B) further comprises an adhesive member, and any two adjacent support members (1121D) are bonded together via the adhesive member.

35. The suspension system of claim 34, wherein: The material of the adhesive member is insulating material.

36. The suspension system of claim 31, wherein: The yoke (1121A) is provided with a clamping groove (1121E) extending along the circumference of the first mounting hole (1121C), and the clamping groove (1121E) is recessed from the outer circumferential surface of the yoke (1121A) toward the inner circumferential surface; One end of the support member (1121D) facing the yoke (1121A) is provided with a protruding portion (1121F) protruding along the axial direction of the first mounting hole (1121C), and the protruding portion (1121F) is clamped in the clamping groove (1121E).

37. The suspension system of claim 31, wherein: Along the direction from the support member (1121D) toward the yoke (1121A), the thickness of the support member (1121D) in the axial direction of the first mounting hole (1121C) gradually decreases.

38. The suspension system of claim 31, wherein: Along the direction from the support member (1121D) toward the yoke (1121A), the distance between the two side surfaces of the support member (1121D) in the circumferential direction of the first mounting hole (1121C) gradually decreases.

39. The suspension system of claim 31, wherein: A first gap is formed between two adjacent support members (1121D).

40. The suspension system of claim 39, wherein: Along the radial direction of the first mounting hole (1121C), the width of the first gap is equal everywhere.

41. The suspension system of claim 39, wherein: Along the radial direction of the first mounting hole (1121C), the width of the first gap gradually increases.

42. The suspension system of claim 41, wherein: The minimum width of the first gap is greater than or equal to 0.1 mm.

43. The suspension system of claim 39, wherein: One of any two adjacent support members (1121D) is provided with a first clamping notch (1121G), and the other is provided with a first clamping protrusion (1121H), and the first clamping protrusion (1121H) is clamped in the first clamping notch (1121G).

44. A suspension system according to any one of claims 39 to 43, characterised in that: The yoke (1121A) comprises a plurality of arc segments (1121K) arranged along the circumference of the yoke (1121A), and a second gap is formed between two adjacent arc segments (1121K).

45. The suspension system of claim 44, wherein: Along the radial direction of the first mounting hole (1121C), the width of the second gap is equal everywhere.

46. ​​The suspension system of claim 44, wherein: Along the radial direction of the first mounting hole (1121C), the width of the second gap gradually increases.

47. The suspension system of claim 44, wherein: The minimum width of the second gap is greater than or equal to 0.1 mm.

48. The suspension system of claim 44, wherein: One of the arc segments (1121K) is connected to at least one of the support members (1121D); or, one of the support members (1121D) is connected to at least one of the arc segments (1121K).

49. The suspension system of claim 30, wherein: The tooth portion (1121B) comprises a first tooth portion (112A) and a second tooth portion (112B) which are separately arranged; the first tooth portion (112A) comprises a plurality of first support members (112C) which are arranged at intervals along the circumference of the first mounting hole (1121C); the second tooth portion (112B) comprises a plurality of second support members (112D) which are arranged at intervals along the circumference of the first mounting hole (1121C); A plurality of the first support members (112C) and a plurality of the second support members (112D) are arranged in a staggered manner along the circumference of the first mounting hole (1121C), and a third gap is formed between adjacent first support members (112C) and second support members (112D).

50. The suspension system of claim 49, wherein: A plurality of the first support members (112C) are connected to the outer peripheral surface of the yoke (1121A).

51. The suspension system of claim 50, wherein: The plurality of first support members (112C) and the yoke (1121A) are an integral structure.

52. The suspension system of claim 50, wherein: The inner diameter of the first tooth portion (112A) is the same as the outer diameter of the yoke portion (1121A), and the inner diameter of the second tooth portion (112B) is the same as the outer diameter of the yoke portion (1121A).

53. The suspension system of claim 49, wherein: The yoke (1121A) includes a first yoke (112E) and a second yoke (112F) which are separately arranged, a plurality of the first support members (112C) are connected to the first yoke (112E), and a plurality of the second support members (112D) are connected to the second yoke (112F).

54. The suspension system of claim 53, wherein: A plurality of the first support members (112C) and the first yoke (112E) are an integral structure, and a plurality of the second support members (112D) and the second yoke (112F) are an integral structure.

55. The suspension system of claim 53, wherein: The second yoke (112F) is located on one side of the first yoke (112E) in the axial direction of the first mounting hole (1121C).

56. The suspension system of claim 55, wherein: The inner diameter of the first yoke (112E) is the same as the inner diameter of the second yoke (112F).

57. The suspension system of claim 53, wherein: Part of the second yoke (112F) is inserted into the interior of the first yoke (112E).

58. The suspension system of claim 57, wherein: The outer diameter of the second yoke (112F) is the same as the inner diameter of the first yoke (112E).

59. The suspension system of claim 53, wherein: The first yoke (112E) comprises a first annular portion (112G) and a plurality of first rib portions (112H), wherein the plurality of first rib portions (112H) are connected to the outer circumferential surface of the first annular portion (112G) and are arranged at intervals along the circumferential direction of the first annular portion (112G); The second yoke portion (112F) includes a second annular portion (112K) and a plurality of second rib portions (112L), the second annular portion (112K) being located on one side of the first annular portion (112G) in the axial direction of the first mounting hole (1121C), the plurality of first rib portions (112H) and the plurality of second rib portions (112L) being arranged alternately along the circumferential direction of the first mounting hole (1121C), and a fourth gap being formed between adjacent first rib portions (112H) and second rib portions (112L).

60. The suspension system of claim 59, wherein: A plurality of the first support members (112C) are connected to a surface of the first annular portion (112G) facing the second annular portion (112K), and one of the first rib portions (112H) is connected to one of the first support members (112C); A plurality of second support members (112D) are connected to the outer peripheral surface of the second annular portion (112K), and a second rib portion (112L) is connected to a side surface of a second support member (112D) facing the first annular portion (112G) in the axial direction of the first mounting hole (1121C).

61. The suspension system of claim 59, wherein: The inner diameter of the first annular portion (112G) is the same as the inner diameter of the second annular portion (112K).

62. A suspension system according to any one of claims 49 to 61, characterized in that The tooth portion (1121B) further comprises a plurality of connecting ribs (112M) and a plurality of connecting grooves (112N), and one of the connecting ribs (112M) is clamped in one of the connecting grooves (112N); Any two adjacent first support members (112C) are connected via a connecting rib (112M), and a plurality of second support members (112D) are provided with the connecting groove (112N); or, any two adjacent second support members (112D) are connected via a connecting rib (112M), and a plurality of first support members (112C) are provided with the connecting groove (112N).

63. The suspension system according to any one of claims 53-58, characterized in that A plurality of first support members (112C) are connected to a surface of the first yoke (112E) facing the second yoke (112F), and a plurality of second support members (112D) are connected to an outer peripheral surface of the second yoke (112F).

64. The suspension system of claim 30, wherein: The iron core (1121) is provided with a blocking groove (1124).

65. The suspension system of claim 64, wherein: The blocking groove (1124) includes a first blocking groove (1124A), and the first blocking groove (1124A) is arranged on the tooth portion (1121B).

66. The suspension system of claim 65, wherein: The first blocking groove (1124A) extends along the circumference of the tooth portion (1121B).

67. The suspension system of claim 65, wherein: The first blocking groove (1124A) extends in a direction from the inner edge of the tooth portion (1121B) to the outer edge of the tooth portion (1121B).

68. The suspension system of claim 65, wherein: The first blocking groove (1124A) extends along the radial direction of the tooth portion (1121B).

69. The suspension system of claim 65, wherein: The blocking groove (1124) further includes a second blocking groove (1124B), and the second blocking groove (1124B) is provided on the yoke (1121A).

70. The suspension system of claim 69, wherein: The second blocking groove (1124B) extends along the circumferential direction of the yoke (1121A).

71. The suspension system of claim 69, wherein: The second blocking groove (1124B) extends in a direction from the inner edge of the yoke (1121A) to the outer edge of the yoke (1121A).

72. The suspension system of claim 69, wherein: The second blocking groove (1124B) extends in the radial direction of the yoke (1121A).

73. The suspension system of claim 69, wherein: There are a plurality of the first blocking grooves (1124A), and the plurality of the first blocking grooves (1124A) are arranged at intervals along the circumference of the first mounting hole (1121C); There are a plurality of second blocking grooves (1124B), and the plurality of second blocking grooves (1124B) are arranged at intervals along the circumference of the first mounting hole (1121C).

74. The suspension system of claim 73, wherein: One of the first blocking grooves (1124A) is connected to one of the second blocking grooves (1124B).

75. The suspension system of claim 30, wherein: The iron core (1121) is made by powder metallurgy process.

76. The suspension system of claim 75, wherein: The raw materials of the iron core (1121) include a soft magnetic composite material in powdered granular form and an insulating material, wherein the insulating material is coated on the surface of the soft magnetic composite material.

77. The suspension system of claim 75, wherein: The iron core (1121) is provided with a rib groove (1125), and a reinforcement piece is provided in the rib groove (1125).

78. The suspension system of claim 77, wherein: The reinforcement is made by injection molding.

79. The suspension system of claim 77, wherein: The rib groove (1125) extends along the circumferential direction of the iron core (1121); or, the rib groove (1125) extends along the radial direction of the iron core (1121).

80. The suspension system of claim 77, wherein: Along the axial direction of the iron core (1121), the iron core (1121) includes a first surface (1121M) and a second surface (1121N); The rib groove (1125) comprises: a plurality of first rib grooves (1125A), the plurality of first rib grooves (1125A) being arranged at intervals along the circumference of the iron core (1121), the first rib grooves (1125A) being recessed in a direction from the first surface (1121M) toward the second surface (1121N); a plurality of second rib grooves (1125B), the plurality of second rib grooves (1125B) being arranged at intervals along the circumference of the iron core (1121), the second rib grooves (1125B) being recessed in a direction from the second surface (1121N) toward the first surface (1121M); A plurality of third rib grooves (1125C) are arranged at intervals along the circumference of the iron core (1121), and the third rib grooves (1125C) are recessed from the inner circumferential surface of the iron core (1121) toward the outer circumferential surface.

81. The suspension system of claim 80, wherein: Along the circumference of the iron core (1121), the first rib groove (1125A) includes a first inner wall surface (1125D) and a second inner wall surface (1125E), and the second rib groove (1125B) includes a third inner wall surface (1125F) and a fourth inner wall surface (1125G); One first rib groove (1125A) corresponds to one second rib groove (1125B), and for the corresponding first rib groove (1125A) and second rib groove (1125B), along the axial direction of the iron core (1121), the projection of the second inner wall surface (1125E) coincides with the projection of the third inner wall surface (1125F), and along the circumferential direction of the iron core (1121), the first inner wall surface (1125D) and the fourth inner wall surface (1125G) are respectively located on both sides of the first inner wall surface (1125D).

82. The suspension system of claim 81, wherein: The third rib groove (1125C) penetrates the iron core (1121) along the axial direction of the iron core (1121), and at least one of the first rib groove (1125A) and the second rib groove (1125B) is connected to the third rib groove (1125C).

83. The suspension system of claim 82, wherein: The rib groove (1125) further includes a plurality of fourth rib grooves (1125H), wherein the fourth rib grooves (1125H) extend along the axial direction of the iron core (1121), and one of the first rib grooves (1125A) is connected to one of the second rib grooves (1125B) via one of the fourth rib grooves (1125H).

84. A suspension system according to any one of claims 75 to 83, characterised in that The iron core (1121) further comprises a force-bearing member (1125K), wherein the force-bearing member (1125K) is disposed in the first mounting hole (1121C) and extends along the circumference of the first mounting hole (1121C).

85. The suspension system of claim 84, wherein: The outer circumferential surface of the force-bearing member (1125K) is formed with a first recessed portion (1125M), and the inner circumferential surface of the yoke (1121A) is formed with a first protruding portion, and the first protruding portion is located in the first recessed portion (1125M).

86. The suspension system of claim 84, wherein: The force-bearing member (1125K) is formed with a second recessed portion (1125N) on one side in the axial direction of the iron core (1121), and the inner peripheral surface of the yoke (1121A) is formed with a second protruding portion, and the second protruding portion is located in the second recessed portion (1125N).

87. The suspension system of claim 84, wherein: The inner circumference of the force-bearing member (1125K) is formed with a third protrusion, the outer circumference of the center rod (111) is formed with a third recess, the center rod (111) is inserted into the force-bearing member (1125K), and the third protrusion is located in the third recess.

88. The suspension system of claim 30, wherein: The plurality of iron cores (1121) include a first end iron core (1126A), a second end iron core (1126B) and a middle iron core (1126C), wherein the middle iron core (1126C) is disposed between the first end iron core (1126A) and the second end iron core (1126B); The first end iron core (1126A) is provided with a first magnetic isolation groove (1126D), and the first magnetic isolation groove (1126D) is recessed from a side surface of the first end iron core (1126A) facing away from the second end iron core (1126B) toward the second end iron core (1126B); The second end core (1126B) is provided with a second magnetic isolation groove (1126E), and the second magnetic isolation groove (1126E) is recessed from a side surface of the second end core (1126B) facing away from the first end core (1126A) toward the first end core (1126A).

89. The suspension system of claim 88, wherein: The first magnetic isolation groove (1126D) extends along the circumference of the first end core (1126A), and the second magnetic isolation groove (1126E) extends along the circumference of the second end core (1126B).

90. The suspension system of claim 88, wherein: A first limiting protrusion (1126F) is formed on the inner circumference of the first end iron core (1126A), and a second limiting protrusion (1126G) is formed on the inner circumference of the second end iron core (1126B); A first limiting groove and a second limiting groove are formed on the outer circumferential surface of the center rod (111), the first limiting protrusion (1126F) is located in the first limiting groove, and the second limiting protrusion (1126G) is located in the second linear groove.

91. The suspension system according to any one of claims 75-83, 88-90, characterized in that: The iron core (1121) further comprises a first tooth crown (1126H), which is arranged at the outer edge of the tooth portion (1121B) and is arranged around the tooth portion (1121B); along the radial direction of the iron core (1121), the projection of the tooth portion (1121B) does not exceed the projection range of the first tooth crown (1126H).

92. The suspension system of claim 91, wherein: The first tooth crown (1126H) is formed with a first inclined surface (1126M) and a second inclined surface (1126N), and the first inclined surface (1126M) and the second inclined surface (1126N) are arranged along the axial direction of the iron core (1121), and the distance between the first inclined surface (1126M) and the second inclined surface (1126N) gradually increases along the direction from the outer circumference of the iron core (1121) toward the inner circumference.

93. The suspension system of claim 11, wherein: The iron core (1121) is provided with a wire groove (1127A), the wire groove (1127A) is recessed from the outer peripheral surface of the iron core (1121) toward the inner peripheral surface, and the wire groove (1127A) penetrates the iron core (1121) along the axial direction of the iron core (1121); Along the axial direction of the iron core (1121), the projections of the wire grooves (1127A) of the multiple iron cores (1121) overlap, so that the wire grooves (1127A) of the multiple iron cores (1121) form a wire channel (1127B); the wire channel (1127B) is used to accommodate the wire connection section (1122A) of the coil (1122), and the wire connection section (1122A) is used to connect adjacent coils (1122) of the same phase.

94. The suspension system of claim 93, wherein: The central rod (111) comprises a first rod segment (111A) and a second rod segment (111B), the winding assembly (112) is connected to the second rod segment (111B), and the first rod segment (111A) is provided with an outlet channel (111E); The coil (1122) closest to the first rod section (111A) among the coils (1122) of the same phase comprises an outlet head (1122B), the outlet head (1122B) being arranged in the outlet channel (111E) and used for connecting an outlet wire of the winding assembly (112), the outlet wire being passed through the outlet channel (111E) and used for connecting a connector (116).

95. The suspension system of claim 94, wherein: The outlet channel (111E) comprises a radial hole (111F) and an axial hole (111G), and the radial hole (111F) is in communication with the axial hole (111G).

96. The suspension system of claim 94, wherein: The outlet channel (111E) is arranged inside the first rod section (111A).

97. The suspension system of claim 5, wherein: The motor comprises a moving component (12) and a fixed component (11), the fixed component (11) comprises the central rod (111) and the winding component (112), and the moving component (12) and the fixed component (11) are capable of relative movement along the axial direction of the central rod (111); The motion component (12) comprises a shell (121), the shell (121) is provided with a second mounting hole (1211), the second mounting hole (1211) is communicated with the internal space of the shell (121), the center rod (111) is passed through the second mounting hole (1211), and the winding component (112) is located inside the shell (121).

98. The suspension system of claim 97, wherein: The motion component (12) further comprises a first linear bearing (124), wherein the first linear bearing (124) is disposed in the second mounting hole (1211) and is connected to the housing (121), and the center rod (111) is passed through the first linear bearing (124) and is slidably connected to the first linear bearing (124).

99. The suspension system of claim 98, wherein: The motion component (12) further comprises: A first sealing member (125), the first sealing member (125) being arranged between an inner wall surface of the second mounting hole (1211) and the center rod (111); A second sealing member (126), wherein the second sealing member (126) is disposed between an inner wall of the second mounting hole (1211) and the center rod (111); the first linear bearing (124) is disposed between the first sealing member (125) and the second sealing member (126); The first sealing member (125), the second sealing member (126), the center rod (111) and the inner wall surface of the mounting hole form a first oil storage cavity, and lubricating liquid is provided in the first oil storage cavity.

100. The suspension system of claim 98, wherein: The housing (121) is provided with an oil injection hole (1212), and the oil injection hole (1212) penetrates from the outer wall surface of the housing (121) to the first oil storage chamber; The motion component (12) further comprises a blocking member (127), wherein the blocking member (127) is detachably connected to the oil filling hole (1212).

101. The suspension system of claim 98, wherein: The motion component (12) further comprises a sealing bracket (128), wherein the sealing bracket (128) is arranged on the outside of the housing (121) and is detachably connected to the top wall of the housing (121); A portion of the first sealing member (125) is disposed between the top wall and the sealing support (128).

102. The suspension system of claim 101, wherein: The first sealing member (125) comprises: an annular sealing portion (1251), wherein the inner circumferential surface of the annular sealing portion (1251) is in contact with the center rod (111); A support portion (1252), wherein the support portion (1252) is connected to the outer peripheral surface of the annular sealing portion (1251) and is arranged around the annular sealing portion (1251), and the support portion (1252) is arranged between the top wall and the sealing bracket (128).

103. The suspension system of claim 102, wherein: When the annular sealing portion (1251) is in a free state, along the axial direction of the annular sealing portion (1251), the distance between the inner circumferential surface of the annular sealing portion (1251) and the axis of the annular sealing portion (1251) first increases and then decreases.

104. The suspension system of claim 102, wherein: The sealing bracket (128) comprises: A main body portion (1281), the main body portion (1281) being located on a side of the support portion (1252) facing away from the top wall; A connecting portion (1282), the connecting portion (1282) is connected to the main body portion (1281) and is arranged around the supporting portion (1252), and the connecting portion (1282) is connected to the shell (121).

105. The suspension system of claim 97, wherein: The central rod (111) is provided with a guide hole (111D) extending along the axial direction of the central rod (111); The motion assembly (12) further comprises a guide rod (123), wherein the guide rod (123) is located inside the housing (121), and at least a portion of the guide rod (123) is located inside the guide hole (111D); The fixing assembly (11) further comprises a second linear bearing (114), wherein the second linear bearing (114) is disposed in the guide hole (111D) and connected to the center rod (111), and the guide rod (123) is passed through the second linear bearing (114) and is slidably connected to the second linear bearing (114).

106. The suspension system of claim 105, wherein: A second oil storage chamber (111M) is formed between the guide rod (123) and the inner wall surface of the guide hole (111D), and lubricating liquid is provided in the second oil storage chamber (111M); The fixing assembly (11) further comprises a third sealing member (115), wherein the third sealing member (115) is arranged between an inner wall surface of the guide hole (111D) and the guide rod (123), and the second linear bearing (114) is located on a side of the third sealing member (115) facing the second oil storage chamber (111M).

107. The suspension system of claim 97, wherein: The suspension system further comprises: an upper support assembly (2), the upper support assembly (2) being arranged outside the shell (121) and connected to the central rod (111), the upper support assembly (2) being used to connect to the vehicle body (100); A buffer body (3), the buffer body (3) being connected to a side of the upper support assembly (2) facing the shell (121).

108. The suspension system of claim 107, wherein: The upper support assembly (2) comprises: An outer bracket (22), the outer bracket (22) being provided with an installation space (221) and a first avoidance hole (222), the center rod (111) being inserted through the first avoidance hole (222), and the buffer body (3) being connected to a side of the outer bracket (22) facing the shell (121); A connecting component (23), wherein the connecting component (23) is disposed in the installation space (221) and connects the outer bracket (22) and the center rod (111).

109. The suspension system of claim 108, wherein: The buffer body (3) and the outer bracket (22) are an integral structure.

110. The suspension system of claim 108, wherein: The connection assembly (23) comprises: An inner sleeve (231), the inner sleeve (231) being connected to the outer bracket (22) and being arranged around the central rod (111); a fixing member (232), the fixing member (232) being disposed on a side of the inner sleeve (231) facing away from the housing (121) and being threadedly connected to the center rod (111); a cover plate (233), the cover plate (233) being disposed on a side of the inner sleeve (231) facing away from the housing (121) and being disposed around the fixing member (232), the cover plate (233) being connected to the outer bracket (22); A fourth sealing member (234), wherein the fourth sealing member (234) is connected between the cover plate (233) and the fixing member (232).

111. The suspension system of claim 110, wherein: The fourth sealing member (234) is capable of expanding and contracting in the radial direction of the cover plate (233).

112. The suspension system of claim 111, wherein: The fourth sealing member (234) is in the shape of an annular corrugated plate, and the corrugated portion of the fourth sealing member (234) extends along the circumference of the cover plate (233).

113. The suspension system of claim 110, wherein: The suspension system further comprises a fifth sealing member (4), wherein the fifth sealing member (4) is arranged between an inner wall surface of the inner bushing (231) and the center rod (111).

114. The suspension system of claim 97, wherein: The central rod (111) is provided with a plug hole (111N); The fixing assembly (11) further comprises a plug connector (116), the plug connector (116) being used to connect an outgoing wire of the winding assembly (112), and a portion of the plug connector (116) being accommodated in the plug hole (111N); At least one sixth sealing member (117), the at least one sixth sealing member (117) being disposed between an inner wall surface of the insertion hole (111N) and the plug connector (116).

115. The suspension system of claim 107, wherein: The suspension system further comprises a dustproof sleeve (5), wherein the dustproof sleeve (5) is sleeved on the outer side of the shell (121), and one end of the dustproof sleeve (5) is connected to the upper support assembly (2), and the other end of the dustproof sleeve (5) is connected to the shell (121), and the dustproof sleeve (5) can be extended and retracted along the axial direction of the shell (121).

116. The suspension system of claim 107, wherein: The suspension system further comprises: A lower support connected to the housing (121); An elastic element is arranged between the upper support assembly (2) and the lower support.

117. The suspension system of claim 5, wherein: The center rod (111) is provided with a first positioning portion (111H), and the winding assembly (112) is provided with a second positioning portion (112P), and the first positioning portion (111H) and the second positioning portion (112P) cooperate to make the center rod (111) and the winding assembly (112) relatively stationary.

118. The suspension system of claim 117, wherein: The first positioning portion (111H) is formed as a groove provided on the outer peripheral wall of the center rod (111), the second positioning portion (112P) is formed as a groove provided on the winding assembly (112), and the anti-rotation rod (111K) is provided between the first positioning portion (111H) and the second positioning portion (112P).

119. The suspension system of claim 5, wherein: The central rod (111) comprises a first rod segment (111A) and a second rod segment (111B), and the winding assembly (112) is connected to the second rod segment (111B); The cooling channel (14) comprises: a water inlet channel (141), the water inlet channel (141) extending from a side surface of the first rod segment (111A) facing away from the second rod segment (111B) to an end of the second rod segment (111B) facing away from the first rod segment (111A); a water outlet channel (142), the water outlet channel (142) extending from a side surface of the first rod segment (111A) facing away from the second rod segment (111B) to an end of the second rod segment (111B) facing away from the first rod segment (111A); A merging flow channel (143), the merging flow channel (143) is arranged at an end of the second rod segment (111B) facing away from the first rod segment (111A), and is connected to the water inlet flow channel (141) and the water outlet flow channel (142).

120. The suspension system of claim 119, wherein: The water inlet channels (141) are multiple in number, and the multiple water inlet channels (141) are arranged at intervals along the circumference of the center rod (111); And / or, the number of the water outlet channels (142) is also multiple, and the multiple water outlet channels (142) are arranged at intervals along the circumference of the central rod (111).

121. The suspension system of claim 120, wherein: The converging flow channel (143) extends along the circumference of the central rod (111).

122. The suspension system of claim 18, wherein: The motion component (12) comprises a housing (121), the housing (121) is provided with a second mounting hole (1211), the second mounting hole (1211) is communicated with the internal space of the housing (121), and the center rod (111) is passed through the second mounting hole (1211); The reading head (151) is connected to the surface where the shell (121) and the center rod (111) match, the magnetic strip (152) is connected to the center rod (111), and the sensing surface of the reading head (151) faces the magnetic strip (152).

123. The suspension system of claim 122, wherein: The central rod (111) is provided with a mounting groove (111C), and the magnetic strip (152) is arranged in the mounting groove (111C).

124. The suspension system of claim 123, wherein: The sensor (15) further comprises a back plate (153), wherein the back plate (153) is arranged in the mounting groove (111C), and the magnetic strip (152) is arranged on a side surface of the back plate (153) facing the reading head (151).

125. The suspension system of claim 124, wherein: At least a portion of the back plate (153) is interference-fitted with the inner wall surface of the installation groove (111C).

126. The suspension system of claim 125, wherein: The back plate (153) comprises: Ontology (1531); A first matching portion (1532) and a second matching portion (1533), wherein the first matching portion (1532) and the second matching portion (1533) are respectively connected to two ends of the main body (1531) in a first direction, wherein the first direction is perpendicular to an arrangement direction of the back plate (153) and the magnetic strip (152); There is an interference fit between the first matching portion (1532) and the inner wall surface of the installation groove (111C), as well as between the second matching portion (1533) and the inner wall surface of the installation groove (111C).

127. A motor, characterized in that: A suspension system for use in any one of claims 1-126, wherein the motor comprises a moving component (12) and a fixed component (11), and the moving component (12) and the fixed component (11) are capable of relative movement along the axial direction of the center rod (111).

128. An actuator, characterized in that: include: The motor of claim 127; An upper supporting assembly (2), wherein the upper supporting assembly (2) is connected to the fixing assembly (11).

129. The actuator according to claim 128, characterized in that Also includes: A lower support connected to the motion component (12); An elastic element is arranged between the upper support assembly (2) and the lower support.

130. A vehicle, characterized in that: include: The suspension system of any one of claims 1-126; Body(100); A wheel (200) is provided on the lower side of the vehicle body (100), and the suspension system is connected between the vehicle body (100) and the wheel (200).

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