Motor, suspension system and vehicle

Abstract

The utility model relates to a suspension motor, a suspension system and a vehicle, the motor comprises a primary assembly and a secondary assembly, the secondary assembly and the primary assembly are arranged at an interval and surround the primary assembly, and a first guide piece is arranged, is fixedly connected with the primary assembly and is in sliding connection with the primary assembly; a magnetic field generated between the primary assembly and the secondary assembly can drive the secondary assembly to move in the axial direction of the motor relative to the first guide piece. According to the technical scheme, the rolling friction mode between the primary assembly and the secondary assembly in the related technology is changed into the sliding friction mode, linear motion of the secondary assembly relative to the primary assembly in the axial direction of the motor can be achieved without arranging a rolling body and a rolling groove, and therefore the size of the motor is reduced, and noise is weakened; in addition, the contact area between the primary assembly and the secondary assembly is increased, and the impact resistance of the motor is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and in particular to a motor, a suspension system and a vehicle. BACKGROUND

[0002] The suspension system is a new type of suspension system developed in recent years, and the permanent magnet linear motor is an electromagnetic actuator of the active suspension.

[0003] In the related art, the relative motion of the primary unit and the secondary unit in the linear motor adopts rolling friction, and a rolling body and a rolling groove need to be arranged, which has a large volume, and the rolling body is prone to generate noise when rolling, and the impact resistance of the rolling component is relatively weak. CONTENT OF THE INVENTION

[0004] The motor, the suspension system and the vehicle provided by the embodiments of the present application reduce the volume of the motor, reduce noise and improve impact resistance, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a motor is provided, comprising:

[0006] a primary assembly;

[0007] a secondary assembly, which is arranged in a spaced manner with the primary assembly and surrounds the primary assembly; and

[0008] a first guide member, which is fixedly connected with the secondary assembly and is in sliding connection with the primary assembly;

[0009] Wherein, the magnetic field generated between the primary assembly and the secondary assembly can drive the secondary assembly to move relative to the first guide member along the axial direction of the motor.

[0010] In some embodiments, the primary assembly comprises:

[0011] a main body part; and

[0012] a second guide member, which is connected with the main body part;

[0013] Wherein, the second guide member is in sliding connection with the first guide member.

[0014] In some embodiments, the first guide member is a sliding rail, and the second guide member is a sliding block; or

[0015] the first guide member is a sliding block, and the second guide member is a sliding rail.

[0016] In some embodiments, the second guide member and the main body part are integrally formed.

[0017] In some embodiments, the second guide is arranged in a circumferential interval on the main body.

[0018] In some embodiments, the number of the second guide arranged in the circumferential direction of the main body is greater than or equal to 2.

[0019] In some embodiments, the number of the slider in the axial direction of the motor is greater than or equal to 2, and a plurality of the sliders can slide on the same slide rail.

[0020] In some embodiments, the first guide and / or the second guide is provided with a friction-reducing layer for reducing the friction between the first guide and the second guide.

[0021] In some embodiments, the first guide and / or the second guide is provided with an oil storage groove for storing lubricating medium to lubricate the first guide and the second guide.

[0022] In some embodiments, the slide rail comprises:

[0023] a bottom plate connected with the secondary assembly or the main body;

[0024] wherein the oil storage groove is arranged on the bottom plate.

[0025] In some embodiments, the slide rail further comprises:

[0026] two side plates respectively located on opposite sides of the bottom plate and connected with the bottom plate;

[0027] wherein each side plate comprises a connected guide rail surface and a guide surface in the axial direction of the motor, the guide surface is arranged obliquely to the guide rail surface and the guide surface for guiding the slider to enter the slide rail along the guide surface.

[0028] In some embodiments, the secondary assembly comprises:

[0029] a housing with a containing cavity, the primary assembly is located in the containing cavity;

[0030] wherein the first guide is fixedly connected with the housing.

[0031] In some embodiments, the secondary assembly further comprises:

[0032] a magnet fixedly connected with the housing;

[0033] wherein the magnet is arranged adjacent to the first guide and arranged in the circumferential direction of the housing.

[0034] In some embodiments, there is an air gap between the magnet and the main body portion;

[0035] wherein the sum of the dimension of the air gap and the dimension of the magnet along the radial direction of the housing is greater than the dimension of the second guide along the radial direction of the main body portion, and the dimension of the second guide along the radial direction of the main body portion is greater than the dimension of the air gap along the radial direction of the main body portion.

[0036] In some embodiments, the dimension of the magnet along the circumferential direction of the housing is greater than the dimension of the second guide along the circumferential direction of the main body portion.

[0037] In some embodiments, an inner wall of the housing is provided with a magnet slot, and the magnet is arranged in the magnet slot.

[0038] In some embodiments, the first guide and the housing are fixedly connected by a fixing member, the fixing member is located in the housing, and an outer surface of the fixing member does not protrude from an outer surface of the housing.

[0039] In some embodiments, one of the housing or the first guide is provided with a positioning member, and the other of the housing or the first guide is provided with a positioning slot; wherein the positioning member is fitted in the positioning slot to fixedly connect the housing and the first guide.

[0040] In some embodiments, the main body portion comprises:

[0041] a core shaft extending along an axial direction of the motor; and

[0042] a plurality of core teeth sleeved on the core shaft, the plurality of core teeth being arranged at intervals along the axial direction of the motor;

[0043] wherein the second guide is integrated with or fixedly connected to the core teeth.

[0044] In some embodiments, a side surface of the second guide away from the core shaft protrudes from a side surface of the core teeth away from the core shaft which is not connected to the second guide.

[0045] In some embodiments, the main body portion further comprises:

[0046] a coil arranged between two adjacent core teeth; and

[0047] a connecting wire connected between two adjacent coils;

[0048] wherein the core teeth further comprise a lead slot located on opposite sides of the core teeth along the circumferential direction of the second guide, and the connecting wire passes through the lead slot to connect two adjacent coils.

[0049] According to a second aspect of the present application, a suspension system is provided, comprising the motor described above.

[0050] According to a third aspect of the present application, a vehicle is provided, comprising the suspension system or the motor described above.

[0051] In the motor, the suspension system and the vehicle provided in the embodiments of the present application, the motor comprises a primary assembly and a secondary assembly, the secondary assembly is arranged at a distance from the primary assembly and surrounds the primary assembly, a first guide member is arranged, the first guide member is fixedly connected with the primary assembly and is slidingly connected with the primary assembly, the magnetic field generated between the primary assembly and the secondary assembly can drive the secondary assembly to move along the axial direction of the motor relative to the first guide member, the rolling friction mode between the primary assembly and the secondary assembly in the related art is replaced by the sliding friction mode in the present application, without the need to arrange rolling bodies and rolling grooves, the linear movement of the secondary assembly relative to the primary assembly along the axial direction of the motor can be realized, so that the volume of the motor is reduced, the noise is weakened, and in addition, the contact area between the primary assembly and the secondary assembly is increased, and the impact resistance of the motor is improved.

[0052] Other features and advantages of the present application will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0054] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0055] Figure 1 is a schematic diagram of the overall structure of the motor provided in the embodiments of the present application;

[0056] Figure 2 is a schematic diagram of the overall structure of the motor provided in the embodiments of the present application; Figure 1 is a schematic diagram of the cross-sectional structure of the motor along the section line A-A in

[0057] Figure 3 is a schematic diagram of one structure of the primary assembly in the motor provided in the embodiments of the present application;

[0058] Figure 4 is a schematic diagram of another structure of the primary assembly in the motor provided in the embodiments of the present application;

[0059] Figure 5is a structural schematic view of a secondary assembly provided in the embodiments of the present application;

[0060] Figure 6 is a structural schematic view of a core tooth in a primary assembly provided in the embodiments of the present application;

[0061] Figure 7 is a structural schematic view of a first guide provided in the embodiments of the present application;

[0062] Figure 8 is a structural schematic view of a core shaft in a primary assembly provided in the embodiments of the present application;

[0063] Figure 9 is a structural schematic view of a suspension system provided in the embodiments of the present application; and

[0064] Figure 10 is a structural schematic view of a vehicle provided in the embodiments of the present application.

[0065] Legend of reference signs:

[0066] 101, motor; 102, suspension system; 103, vehicle;

[0067] 1, primary assembly; 11, main body part; 12, second guide; 13, core shaft; 131, flow guide channel; 14, core tooth; 141, lead slot; 142, shaft hole; 15, coil; 16, connecting wire; 17, winding slot;

[0068] 2, secondary assembly; 21, shell; 211, opening; 22, accommodating cavity; 23, magnet; 24, magnet slot; 25, fixing part; 26, positioning part; 27, positioning slot;

[0069] 3, first guide; 31, bottom plate; 32, side plate; 321, guide rail surface; 322, guide surface; 33, oil storage groove;

[0070] 4, air gap. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative effort fall within the protection scope of the present application.

[0072] According to a first aspect of the present application, with reference to Figures 1-8The motor 101 comprises a primary assembly 1 and a secondary assembly 2, the secondary assembly 2 is arranged in a spaced manner with the primary assembly 1 and surrounds the primary assembly 1, a first guide 3 is arranged, the first guide 3 is fixedly connected with the primary assembly 1 and is in sliding connection with the primary assembly 1, and a magnetic field generated between the primary assembly 1 and the secondary assembly 2 can drive the secondary assembly 2 to move along the axial direction of the motor 101 relative to the first guide 3.

[0073] By the above technical scheme, the rolling friction mode between the primary assembly 1 and the secondary assembly 2 in the related art is changed into a sliding friction mode, without the need of arranging a rolling body and a rolling groove, the linear motion of the secondary assembly 2 relative to the primary assembly 1 along the axial direction of the motor 101 can be realized, so that the self size of the motor 101 is reduced, and the noise is weakened; in addition, the contact area between the primary assembly 1 and the secondary assembly 2 is increased, and the impact resistance of the motor 101 is improved.

[0074] In some embodiments, the motor 101 is an electromagnetic linear motor, the core is to generate a linear thrust through the interaction of an electromagnetic field and a current, and the secondary assembly 2 is driven to move linearly relative to the primary assembly 1 through the linear thrust. In the embodiment of the present application, the motor 101 is a cylindrical linear motor, that is, the primary assembly 1 in the present application is in a cylindrical shape, and the secondary assembly 2 is in a cylindrical shape, so that the secondary assembly 2 is sleeved on the outside of the primary assembly 1, the secondary assembly 2 is located outside, and the primary assembly 1 is located inside.

[0075] It should be noted that the motion of the primary assembly 1 and the secondary assembly 2 is relative. According to the connection relationship between the primary assembly 1 and the secondary assembly 2, the motor 101 is divided into an outer mover inner stator motor 101 and an outer stator inner mover motor 101. For the outer mover inner stator motor 101, the secondary assembly 2 serves as a mover of the motor 101, the primary assembly 1 serves as a stator of the motor 101, and the secondary assembly 2 can move linearly relative to the primary assembly 1, as shown in Figure 1 For the outer stator inner mover motor 101, the primary assembly 1 serves as a mover of the motor 101, the secondary assembly 2 serves as a stator of the motor 101, and the primary assembly 1 can move linearly relative to the secondary assembly 2. For the convenience of description, the motor 101 in Figure 1 will be taken as an example to describe the technical scheme provided by the present application.

[0076] In some embodiments, as shown in Figure 4As shown, the primary assembly 1 comprises a main body 11 and a second guide 12, the second guide 12 is connected with the main body 11, and the second guide 12 is in sliding connection with the first guide 3. The main body 11 refers to the part of the primary assembly 1 for generating a magnetic field with the secondary assembly 2, and the second guide 12 is used for the part in sliding connection with the first guide 3, and the first guide 3 and the second guide 12 together constitute a guide structure of the motor 101. By setting the first guide 3 and the second guide 12 in sliding connection, the magnetic field generated between the main body 11 of the primary assembly 1 and the secondary assembly 2 can drive the secondary assembly 2 to move along the axial direction of the motor 101 through the sliding connection of the first guide 3 and the second guide 12.

[0077] As shown in some embodiments, Figures 5-6 the first guide 3 is a sliding rail, and the second guide 12 is a sliding block, so that the second guide 12 slides in the first guide 3. In other embodiments, the first guide 3 is a sliding block, and the second guide 12 is a sliding rail, so that the first guide 3 slides in the second guide 12.

[0078] It should be noted that the structure of the first guide 3 and the second guide 12 is not limited in the embodiments of the present application, that is, the first guide 3 can be one of a sliding block and a sliding rail, and the second guide 12 can be the other one of a sliding block and a sliding rail. That is to say, in the embodiments of the present application, the one connected with the main body 11 of the primary assembly 1 can be one of a sliding block and a sliding rail, and the other one connected with the secondary assembly 2 can be the other one of a sliding block and a sliding rail, as long as the first guide 3 and the second guide 12 can be in sliding connection.

[0079] For the convenience of description, the first guide 3 is taken as a sliding block and the second guide 12 is taken as a sliding rail in the embodiments of the present application.

[0080] In some embodiments, as shown in Figure 4 and Figure 6 the second guide 12 and the main body 11 are integrally formed, that is, the second guide 12 and the main body 11 are prepared and formed in the same process, which can simplify the process flow and assembly process, and improve the connection strength between the main body 11 and the second guide 12.

[0081] Of course, in other embodiments, as shown in Figure 5 the second guide 12 and the main body 11 can also be prepared separately and then assembled and connected, and the second guide 12 is fixed on the main body 11 by gluing or mechanical connection. In an example, the second guide 12 is in a strip shape, and the second guide 12 and the main body 11 can be connected by bolts.

[0082] In some embodiments, the second guide members 12 are arranged at intervals in the circumferential direction of the main body portion 11. For example, the second guide members 12 are arranged at uniform intervals in the circumferential direction of the main body portion 11, so that the second guide members 12 can cooperate with the first guide members 3 to form multiple-point support, resist eccentric load or vibration, and ensure that the stator and the rotor remain relatively stable and do not shake in the radial direction.

[0083] In some embodiments, the number of second guide members 12 arranged in the circumferential direction of the main body portion 11 is greater than or equal to 2, such as Figure 6 As shown in the figure, the number of second guide members 12 arranged in the circumferential direction of the main body portion 11 in the embodiment of the present application is equal to 3.

[0084] It can be understood that, since the first guide members 3 are in sliding connection with the second guide members 12, in the embodiment of the present application, the number of first guide members 3 arranged in the circumferential direction is equal to the number of second guide members 12 arranged in the circumferential direction. Correspondingly, as shown in the figure, the number of first guide members 3 arranged in the circumferential direction is also equal to 3. Figure 5

[0085] In some embodiments, the number of sliding blocks in the axial direction of the motor 101 is greater than or equal to 2, and multiple sliding blocks can slide on the same sliding rail. Multiple sliding blocks can prevent the sliding block from tilting and deviating in the sliding rail, and ensure that the stator and the rotor remain relatively stable and do not shake in the radial direction.

[0086] In some embodiments, the shape of the sliding block can be square, arc, triangle, etc., and the shape of the sliding rail is matched with the sliding block. The embodiment of the present application does not limit this.

[0087] In some embodiments, the first guide member 3 and / or the second guide member 12 is provided with a friction-reducing layer for reducing the friction between the first guide member 3 and the second guide member 12. The friction-reducing layer can be formed on the outer surface of the first guide member 3 and / or the second guide member 12 by a spraying process. The friction-reducing layer can include an aluminum oxide, titanium oxide, or other low-friction coefficient plating layer.

[0088] In the embodiment of the present application, the thickness of the friction-reducing layer ranges from 0.01 mm to 5 mm. It can be understood that the thickness of the friction-reducing layer in the embodiment of the present application cannot be too large or too small. If it is too large, it will occupy the internal space of the casing, resulting in an increase in the volume of the motor 101, and if it is too small, it will not reduce the friction.

[0089] In the embodiment of the present application, the sliding rail and the sliding block are in clearance fit, which can allow the sliding block to automatically align during movement through the lubricating medium, maintain the straightness of the movement track, and also avoid direct contact between the sliding rail and the sliding block, so that the load can be shared by the lubricating medium and the wear rate of the contact surface is reduced. The sliding rail can be an aluminum alloy material subjected to anodic oxidation and hardening treatment.

[0090] As​Figure 7 As shown, in some embodiments, the slide rail is provided with an oil reservoir 33 for storing lubricating medium to lubricate the first guide member 3 and the second guide member 12, thereby reducing the wear rate of the contact surface between the first guide member 3 and the second guide member 12 and reducing costs. In one example, the lubricating medium may include lubricating grease.

[0091] In some embodiments, the slide rail includes a base plate 31, which is connected to the secondary component 2 or the main body 11. An oil reservoir 33 is disposed on the base plate 31. In this embodiment, the extension direction of the slide rail is parallel to the axial direction of the motor 101, that is, the extension direction of the base plate 31 is also parallel to the axial direction of the motor 101. The extension direction of the slide rail and the extension direction of the base plate 31 are the same; the extension direction of the slide rail refers to its length direction, and the extension direction of the base plate 31 refers to its length direction.

[0092] In this embodiment of the application, in order to ensure that all parts of the slide rail can be effectively lubricated, the oil reservoir 33 can be distributed along the entire length of the slide rail.

[0093] It should be noted that the shape and extending direction of the oil storage tank 33 are not limited in this embodiment; it only needs to serve the function of storing oil. For example, the shape of the oil storage tank 33 can be circular or polygonal. The extending direction of the oil storage tank 33 can be horizontal or vertical. Figure 7 As shown, a plurality of oil storage tanks 33 are provided on the base plate 31 at intervals, and the extension direction of each oil storage tank 33 is parallel to the extension direction of the base plate 31.

[0094] In some embodiments, the slide rail further includes two side plates 32, which are located on opposite sides of the base plate 31 and connected to the base plate 31. The slide rail includes a groove located within the receiving space enclosed by the base plate 31 and the two side plates 32. The slider slides within the groove along the extending direction of the slide rail. The concave depth of the groove is less than the length of the slider.

[0095] In some embodiments, each side plate 32 includes a connecting guide rail surface 321 and a guide surface 322 along the axial direction of the motor 101. The guide surface 322 is inclined outward relative to the guide rail surface 321 and is used to guide the slider into the slide rail along the guide surface 322. It is understood that one end of the slide rail in this embodiment adopts a flared design, which can play a guiding and constraining role when the motor 101 is closed, that is, when the primary component 1 and the secondary component 2 are assembled, to avoid hard collision between the slider and the slide rail during installation, thereby reducing assembly damage.

[0096] like Figure 5As shown, in some embodiments, the secondary component 2 includes a housing 21, which may have a receiving cavity 22, and the secondary component 2 is located within the receiving cavity 22. The first guide member 3 is fixedly connected to the housing 21, i.e., the slide rail is fixedly connected to the housing 21.

[0097] In some embodiments, the first guide member 3 is fixedly connected to the inner wall of the housing 21.

[0098] In some embodiments, the housing 21 is made of non-magnetic heat-treated and strengthened aluminum alloy.

[0099] In some embodiments, the secondary component 2 further includes a magnet 23, which is fixedly connected to the housing 21. The magnet 23 is disposed adjacent to the first guide member 3 and arranged along the axial direction of the housing 21 to generate a uniform magnetic field.

[0100] In some embodiments, combined with Figure 2 , Figure 5 and Figure 6 An air gap 4 exists between the magnet 23 and the main body 11. The air gap 4 refers to the gap between the inner diameter of the magnet 23 and the outer diameter of the main body 11 of the secondary component 2. The sum of the radial dimensions of the air gap 4 and the magnet 23 along the housing 21 is greater than the radial dimension of the second guide member 12 along the main body 11, and the radial dimension of the second guide member 12 along the main body 11 is greater than the radial dimension of the air gap 4 along the main body 11. This limits the protrusion dimension of the second guide member 12 from being greater than the air gap 4 (i.e., the inner diameter of the magnet 23) and smaller than the outer diameter of the housing 21. Specifically, the air gap 4 refers to the gap between the inner diameter of the magnet 23 and the outer diameter of the primary component 1, that is, the gap between the inner diameter of the magnet 23 and the outer diameter of the main body 11. Furthermore, since in this embodiment, the inner diameter of the magnet 23 is equal to the inner diameter of the second guide 12 (slide rail), the sum of the dimensions of the air gap and the magnet 23 along the radial direction of the housing 21 is actually equal to the sum of the thickness of the air gap 4 and the depth of the slide rail.

[0101] In some embodiments, the dimension of the magnet 23 along the circumference of the housing 21 is larger than the dimension of the second guide 12 along the circumference of the main body 11. This limits the space occupied by the first guide 3 and the second guide 12 in the motor 101. If the first guide 3 and the second guide 12 occupy a large proportion of the entire circumferential space, the thrust density of the motor 101 will be reduced. Conversely, if the first guide 3 and the second guide 12 occupy a small proportion of the entire circumferential space, the motor 101 will be structurally unstable and have low structural strength.

[0102] In some embodiments, the inner wall of the housing 21 is provided with a magnet groove 24, and the magnet 23 is disposed in the magnet groove 24. In this way, the space occupied by the magnet 23 in the housing cavity 22 can be reduced, which is beneficial to further reduce the volume of the motor 101.

[0103] It should be noted that the magnet 23 can be made of materials such as neodymium iron boron, ferrite, or samarium cobalt. There are multiple magnets 23, each roughly rectangular in shape, and each magnet 23 is attached to the inner wall of the housing 21 and surrounds the main body 11. The multiple magnets 23 are arranged in a Halbach array, which can increase the magnetic field strength of the magnets 23. The housing 21 is made of non-magnetic heat-treated and strengthened aluminum alloy.

[0104] In some embodiments, the first guide member 3 is integrally connected to or fixedly connected to the housing 21.

[0105] In some embodiments, the first guide member 3 is mechanically fixed to the housing 21 or fixedly connected by adhesive. In one example, the first guide member 3 is fixedly connected to the housing 21 by a fastener 25, which is located inside the housing 21 and whose outer surface does not protrude from the outer surface of the housing 21. Thus, the fastener 25 can be embedded within the housing 21, ensuring that its outer diameter does not protrude. Compared to the fastener 25 penetrating through the inner diameter of the housing 21, the internal space required for the housing 21 in this embodiment is reduced, which helps save internal space. Furthermore, it improves the aesthetics of the motor 101.

[0106] In this embodiment, the fixing member 25 can be a screw, and the outer surface of the housing 21 is provided with a plurality of openings 211, which can be countersunk screw holes. The screw passes through the countersunk screw holes and connects to the slide rail of the first guide member 3 (slide rail), so that the first guide member 3 is fixed on the housing 21.

[0107] In some embodiments, one of the housing 21 or the first guide member 3 is provided with a positioning member 26, and the other of the housing 21 or the first guide member 3 is provided with a positioning groove 27. The positioning member 26 is fitted into the positioning groove 27 to fix the housing 21 and the first guide member 3 together. For example, Figure 5 As shown, the inner wall of the housing 21 is provided with a plurality of positioning grooves 27, which are arranged at intervals along the circumference of the housing 21. Correspondingly, the base plate 31 of the first guide member 3 (slide rail) is provided with a plurality of positioning members 26, each positioning member 26 cooperating with the corresponding positioning groove 27. The positioning member 26 can be a positioning key, and the positioning groove 27 can be a keyway.

[0108] like Figure 6 and Figure 8As shown, in some embodiments, the main body 11 includes a spindle 13 and an iron core. The spindle 13 extends axially along the motor 101. The iron core is sleeved on the spindle 13 and includes a plurality of iron core teeth 14, which are spaced apart axially along the motor 101. The second guide member 12 (slider) is integrally or fixedly connected to the iron core teeth 14. The iron core teeth 14 are provided with shaft holes 142, and the spindle 13 is inserted into the shaft holes 142, with a first end of the spindle 13 extending into the shaft hole 142 and a second end extending out of the shaft hole 142.

[0109] In some embodiments, such as Figure 4 As shown, the second guide 12 (slider) is integrally connected with the iron core tooth 14. After the two are integrally formed and prepared, multiple iron core teeth 14 are stacked and assembled together. At this time, multiple second guides 12 are spaced apart in the axial direction of the motor 101.

[0110] In other embodiments, such as Figure 3 As shown, the second guide 12 (slider) and the iron core teeth 14 are formed independently. After both are prepared, multiple iron core teeth 14 are stacked and assembled together. Then, the second guide 12 and multiple iron core teeth 14 are fixedly connected.

[0111] In some embodiments, the side surface of the second guide 12 away from the spindle 13 protrudes from the side surface of the iron core tooth 14 away from the spindle 13 that is not connected to the second guide 12. Thus, the second guide 12 protrudes relative to the outer surface of the iron core tooth 14, thereby achieving a sliding connection with the first guide 3.

[0112] like Figures 2-4 As shown, in some embodiments, the main body 11 further includes a coil 15 and a connecting wire 16. The coil 15 is disposed between two adjacent iron core teeth 14, and the connecting wire 16 connects two adjacent coils 15 so that every two adjacent coils 15 are electrically connected. When energized, the coil 15 can generate a magnetic field. The magnetic field generated by the coil 15 interacts with the magnetic field generated by the magnet 23, which can drive the coil 15 and the magnet 23 to move relative to each other, thereby causing the main body 11 and the housing 21 to slide relative to each other.

[0113] In this embodiment, the main body 11 further includes a winding groove 17, which is disposed between two adjacent iron core teeth 14. The coil 15 is located in the corresponding winding groove 17 and surrounds the mandrel 13. The iron core teeth 14 and the winding groove 17 are alternately arranged. Each pair of adjacent winding grooves 17 are connected by a through hole, and each pair of adjacent coils 15 are electrically connected to the corresponding through hole. Multiple coils 15 can be connected in series in one phase to coils 15 distributed in different winding grooves 17 through connecting wires 16. After series connection, one end of the phase is connected to the conductors of other phases to form an armature winding, and the other end is led out from the outlet groove to connect to the controller of the motor 101. The controller is used to control the operation of the motor 101.

[0114] In some embodiments, the number of winding slots 17 is determined according to the pole-slot fit selected by the motor 101. The axial length of the winding slot 17 is L1, the total length of the iron core is L2, the number of winding slots 17 is n, and the first constant is t1, L1 = (L2 / n)*t1, where the range of the first constant t1 is 0.3-0.7. The total length of the iron core / number of slots is equal to the total length of one winding slot 17 and one iron core tooth 14 on the iron core, and one winding slot 17 needs to occupy 0.3 to 0.7 of this total length.

[0115] In some embodiments, the depth of the winding groove 17 is D1, the outer diameter of the iron core is R1, the inner diameter of the iron core is R2, and the second constant is t2, where D1 = (R2 - R1) * t2, and the range of the second constant t2 is 0.65-0.85.

[0116] The inner diameter of the iron core is the diameter of the flow channel 131. The difference between the outer diameter and the inner diameter of the iron core is equal to the thickness of the iron core. The winding groove 17 needs to occupy 0.65 to 0.85 of the thickness of the iron core in the radial direction.

[0117] In some embodiments, the mandrel 13 has a flow channel 131 inside for cooling the mandrel.

[0118] like Figure 6 As shown, in some embodiments, the iron core tooth 14 further includes a lead wire groove 141, which is located on opposite sides of the second guide member 12 along the circumferential direction of the iron core. The connecting wire 16 passes through the lead wire groove 141 to connect two adjacent coils 15. This facilitates the connecting wire 16 passing through the lead wire groove 141 without protruding outward, avoiding the connecting wire 16 occupying the space occupied by the receiving cavity 22 of the housing 21, which is beneficial to further reduce the volume of the motor 101.

[0119] It should be noted that when the second guide member 12 (slider) is integrally formed with the iron core, the lead wire groove 141 and the second guide member 12 are integrally formed. When the second guide member 12 (slider) and the iron core are not integrally formed, after a groove is formed on the iron core, the second guide member 12 is installed in the groove to form the lead wire groove 141.

[0120] It should be noted that the assembly sequence of the motor 101 in this embodiment is as follows: First, the iron core teeth 14 and the coil 15 are installed into the spindle 13 in sections, and the sliders protruding from the outer circumference of the iron core are aligned axially; then, the magnet 23 is placed in the magnet slot 24, and the magnet slot 24 and the housing 21 can be connected by adhesive or bolts; the inner concave surface of the slide rail is coated with lubricating medium and fixed to the housing 21 by bolts or adhesives, the primary component 1 is positioned by tooling and assembled with the secondary component 2, the sliders enter the slide rail in sections, and the assembly is completed when all sliders in the axial direction have completely entered the slide rail.

[0121] like Figure 9 As shown, according to a second aspect of this application, a suspension system 102 is provided, which includes the motor 101 in the above embodiments. This suspension system 102 possesses all the beneficial effects of the motor 101 described above, which will not be repeated here.

[0122] like Figure 10 As shown, according to a third aspect of this application, a vehicle 103 is provided, which includes the suspension system 102 or motor 101 described above. The vehicle 103 has all the beneficial effects of the suspension system 102 or motor 101 described above, which will not be repeated here.

[0123] The vehicle 103 may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions on it.

[0124] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0125] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0126] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0127] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An electric motor (101), characterized in that, include: Primary component (1); The secondary component (2) is spaced apart from and surrounds the primary component (1); and The first guide member (3) is fixedly connected to the secondary component (2) and slidably connected to the primary component (1); The magnetic field generated between the primary component (1) and the secondary component (2) can drive the secondary component (2) to move relative to the first guide (3) along the axial direction of the motor (101).

2. The motor (101) according to claim 1, characterized in that, The primary component (1) includes: Main body (11); and The second guide member (12) is connected to the main body (11); The second guide member (12) is slidably connected to the first guide member (3).

3. The motor (101) according to claim 2, characterized in that, The first guide member (3) is a slide rail, and the second guide member (12) is a slider; or The first guide (3) is a slider, and the second guide (12) is a slide rail.

4. The motor (101) according to claim 2, characterized in that, The second guide (12) and the main body (11) are integrally formed.

5. The motor (101) according to claim 2, characterized in that, The second guide member (12) is arranged at intervals in the circumferential direction of the main body (11).

6. The motor (101) according to claim 5, characterized in that, The number of the second guide members (12) arranged in the circumferential direction of the main body (11) is greater than or equal to 2.

7. The motor (101) according to claim 3, characterized in that, The number of sliders along the axial direction of the motor (101) is greater than or equal to 2, and multiple sliders can slide on the same slide rail.

8. The motor (101) according to claim 3, characterized in that, The first guide (3) and / or the second guide (12) are provided with a friction-reducing layer to reduce the friction between the first guide (3) and the second guide (12).

9. The motor (101) according to claim 3, characterized in that, The first guide (3) and / or the second guide (12) are provided with an oil reservoir (33) for storing lubricating medium to lubricate the first guide (3) and the second guide (12).

10. The motor (101) according to claim 9, characterized in that, The slide rail includes: A base plate (31) is connected to the secondary component (2) or the main body (11); The oil storage tank (33) is disposed on the bottom plate (31).

11. The motor (101) according to claim 10, characterized in that, The slide rail also includes: Two side plates (32) are located on opposite sides of the bottom plate (31) and connected to the bottom plate (31); Each of the side plates (32) includes a connecting guide rail surface (321) and a guide surface (322) along the axial direction of the motor (101). The guide surface (322) is inclined relative to the guide rail surface (321) and is used to guide the slider into the slide rail along the guide surface (322).

12. The motor (101) according to any one of claims 2-11, characterized in that, The secondary component (2) includes: The housing (21) has a receiving cavity (22) in which the primary component (1) is located; The first guide member (3) is fixedly connected to the housing (21).

13. The motor (101) according to claim 12, characterized in that, The secondary component (2) also includes: The magnet (23) is fixedly connected to the housing (21); The magnet (23) is arranged adjacent to the first guide (3) and along the circumference of the housing (21).

14. The motor (101) according to claim 13, characterized in that, An air gap (4) exists between the magnet (23) and the main body (11); The sum of the dimensions of the air gap (4) and the magnet (23) along the radial direction of the housing (21) is greater than the dimension of the second guide (12) along the radial direction of the main body (11), and the dimension of the second guide (12) along the radial direction of the main body (11) is greater than the dimension of the air gap (4) along the radial direction of the main body (11).

15. The motor (101) according to claim 14, characterized in that, The magnet (23) has a larger dimension along the circumference of the housing (21) than the second guide (12) has a larger dimension along the circumference of the main body (11).

16. The motor (101) according to claim 13, characterized in that, The inner wall of the housing (21) is provided with a magnet groove (24), and the magnet (23) is disposed in the magnet groove (24).

17. The motor (101) according to claim 12, characterized in that, The first guide member (3) is fixedly connected to the housing (21) by a fixing member (25). The fixing member (25) is located inside the housing (21), and the outer surface of the fixing member (25) does not protrude from the outer surface of the housing (21).

18. The motor (101) according to claim 12, characterized in that, One of the housing (21) or the first guide (3) is provided with a positioning member (26), and the other of the housing (21) or the first guide (3) is provided with a positioning groove (27); wherein the positioning member (26) is assembled in the positioning groove (27) to fix the housing (21) and the first guide (3).

19. The motor (101) according to any one of claims 2-11, characterized in that, The main body (11) includes: A spindle (13) extends axially along the motor (101); and Multiple iron core teeth (14) are sleeved on the spindle (13), and the multiple iron core teeth (14) are spaced apart along the axial direction of the motor (101); The second guide (12) is integrally or fixedly connected to the iron core tooth (14).

20. The motor (101) according to claim 19, characterized in that, The side surface of the second guide (12) away from the mandrel (13) protrudes from the side surface of the iron core tooth (14) that is not connected to the second guide (12) away from the mandrel (13).

21. The motor (101) according to claim 20, characterized in that, The main body (11) also includes: A coil (15) is disposed between two adjacent iron core teeth (14); and A connecting line (16) is used to connect two adjacent coils (15); The iron core tooth (14) further includes a lead groove (141), which is located on opposite sides of the second guide (12) along the circumferential direction of the iron core tooth (14). The connecting wire (16) passes through the lead groove (141) to connect two adjacent coils (15).

22. A suspension system (102), characterized in that, Includes the motor (101) as described in any one of claims 1-21.

23. A vehicle (103), characterized in that, Includes the suspension system (102) as described in claim 22 or the motor (101) as described in any one of claims 1-21.

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