Secondary assembly and machining method therefor, motor, suspension assembly, and vehicle

Abstract

A secondary assembly and a machining method therefor, a motor, a suspension assembly, and a vehicle. The secondary assembly comprises a housing and a plurality of magnets. The plurality of magnets are sequentially stacked in a first direction, and the plurality of magnets are fixed to the housing in a second direction by means of a first adhesive layer. A first surface and a second surface which are oppositely arranged in the second direction are formed on each of the plurality of magnets, and the first surface is fixedly connected to the first adhesive layer. The flatness of the second surfaces is less than the flatness of the first surfaces of the plurality of magnets, and the first direction is perpendicular to the second direction.

Description

Secondary components and their processing methods, motors, suspension components, and vehicles.

[0001] This application claims priority to Chinese patent application No. 202411758490.1, filed on November 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and more particularly to a secondary component and its processing method, an electric motor, a suspension assembly, and a vehicle. Background Technology

[0003] A vehicle includes a body, wheels, and a suspension assembly connecting the body and wheels. The suspension assembly is used to buffer the impact forces transmitted to the body from uneven road surfaces to ensure a smooth ride. In some suspension assemblies, a motor is also included. The motor is used to adjust the stiffness and damping of the suspension assembly in real time according to the vehicle's motion and road conditions to keep the suspension assembly in an optimal damping state. Summary of the Invention

[0004] This disclosure provides a secondary component and its processing method, a motor, a suspension assembly, and a vehicle.

[0005] In a first aspect, a secondary component is provided, including a housing and a plurality of magnets. The plurality of magnets are stacked sequentially in a first direction, and in a second direction, the plurality of magnets are fixed to the housing by a first adhesive layer. The plurality of magnets have a first surface and a second surface disposed opposite to each other in the second direction, and the first surface is fixedly connected to the first adhesive layer. The flatness of the second surface is less than the flatness of the first surface of the plurality of magnets, and the first direction and the second direction are perpendicular.

[0006] With the above settings, since the flatness of the second surface is less than the flatness of the first surface of the multiple magnets, the difference between the surfaces of the multiple magnets forming the first surface is larger, and the difference between the surfaces of the multiple magnets forming the second surface is smaller.

[0007] In this way, the thickness of the first adhesive layer between the multiple magnets and the housing is not equal, which can increase the bonding area between the first adhesive layer and the multiple magnets and improve the bonding force.

[0008] In some embodiments, the flatness of the second surface is less than or equal to 0.08 mm.

[0009] In some embodiments, the flatness of the second surface is less than or equal to 0.06 mm.

[0010] In some embodiments, the flatness of the second surface is greater than or equal to 0.02 mm.

[0011] In some embodiments, the flatness of the first surface is greater than 0.1 mm.

[0012] In some embodiments, the flatness of the first surface is less than or equal to 0.2 mm.

[0013] In some embodiments, the secondary component further includes a second adhesive layer disposed between two adjacent magnets in a first direction, and the second adhesive layer is a thermosetting adhesive.

[0014] In some embodiments, the glass transition temperature of the second adhesive layer is greater than 120°C.

[0015] In some embodiments, the thickness of the second adhesive layer along the first direction is greater than or equal to 0.02 mm and less than or equal to 0.03 mm.

[0016] In a second aspect, an electric motor is provided, including a primary component and the aforementioned secondary component. The primary component includes a winding structure that cooperates with a plurality of magnets to enable the secondary component to reciprocate relative to the primary component in a first direction.

[0017] In some embodiments, the secondary component can reciprocate between a first position and a second position relative to the primary component along a first direction. The length of the motor when the secondary component is in the first position is a first length, and the length of the motor when the secondary component is in the second position is a second length, wherein the first length is less than the second length. In some embodiments, the housing is a cylindrical structure, a plurality of magnets are disposed inside the housing and fixed to the inner peripheral wall of the housing, and the winding structure is located in the area surrounded by the plurality of magnets.

[0018] Thirdly, a suspension assembly is provided, including a motor, a tower mount assembly, and a spring according to any embodiment of the second aspect above. The tower mount assembly is disposed on one of the primary and secondary assemblies of the motor and is adapted to connect to the vehicle body. The spring is disposed between the tower mount assembly and the other of the primary and secondary assemblies, and the other of the primary and secondary assemblies is adapted to connect to a wheel.

[0019] Fourthly, a vehicle is provided, including a wheel, a body, a steering knuckle, a steering assembly, and a suspension assembly as described in the third aspect, wherein the steering knuckle is disposed on the wheel, the steering assembly is connected to the steering knuckle, and the suspension assembly is connected between the body and the steering knuckle.

[0020] Fifthly, a method for processing a secondary component is provided. The secondary component includes multiple magnets, which are sequentially stacked in a first direction and fixed to a housing in a second direction by a first adhesive layer. The multiple magnets have a first surface and a second surface disposed opposite to each other in the second direction, and the first surface is fixedly connected to the first adhesive layer. The processing method includes:

[0021] Multiple magnets are stacked and fitted onto a fixture, with the fixture facing the second surface of the multiple magnets.

[0022] The driving fixture presses the second surface of multiple magnets so that the flatness of the second surface of the multiple magnets is less than or equal to 0.08 mm.

[0023] In some embodiments, the plurality of magnets are in a ring shape, and the second surface of the plurality of magnets is the inner circumferential surface of the magnets.

[0024] Multiple magnets are fitted onto the fixture, including:

[0025] Multiple magnets are placed around the periphery of the fixture so that the inner circumferential surfaces of the fixture and the magnets face each other.

[0026] The driving fixture presses the second surface of multiple magnets, including:

[0027] The driving fixture expands to compress the second surface of multiple magnets.

[0028] In some embodiments, driving the fixture to expand includes:

[0029] Heat the fixture to make it expand.

[0030] In some embodiments, the heating temperature of the fixture is greater than or equal to 100°C and less than or equal to 120°C.

[0031] In some embodiments, the fixture is made of aluminum alloy or ceramic.

[0032] In some embodiments, before heating the fixture, the processing method further includes:

[0033] A second adhesive layer is provided between adjacent magnets, and the material of the second adhesive layer is thermosetting adhesive.

[0034] Heating fixtures include:

[0035] Heat the fixture and cure the second adhesive layer.

[0036] In some embodiments, the plurality of magnets are in a ring shape, the second surface of the plurality of magnets is the outer peripheral surface of the magnets, and the fixture is in a ring shape.

[0037] Multiple magnets are fitted onto the fixture, including:

[0038] Multiple magnets are fitted onto the inner circumference of the fixture so that the outer circumference of the fixture and the multiple magnets face each other.

[0039] The driving fixture presses the second surface of multiple magnets, including:

[0040] The drive fixture contracts to compress the second surface of multiple magnets. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of some embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 is a structural diagram of a vehicle according to some embodiments;

[0043] Figure 2 shows the connection relationship between the steering knuckle, steering assembly, and suspension assembly in the vehicle shown in Figure 1;

[0044] Figure 3 is one of the structural diagrams of the suspension assembly in the vehicle shown in Figure 1;

[0045] Figure 4 is a cross-sectional view of the suspension assembly shown in Figure 3;

[0046] Figure 5 is a second structural diagram of the suspension assembly in the vehicle shown in Figure 1;

[0047] Figure 6 is a structural diagram of the suspension assembly shown in Figure 5 viewed from above;

[0048] Figure 7 is a cross-sectional view of section AA in Figure 6;

[0049] Figure 8 is a cross-sectional view of the motor in Figure 6;

[0050] Figure 9 is a structural diagram of the first adhesive layer according to some embodiments;

[0051] Figure 10 is a flowchart of one of the processing methods for a secondary component according to some embodiments;

[0052] Figure 11 is a second flowchart of a method for processing a secondary component according to some embodiments;

[0053] Figure 12 is a perspective view of a secondary component according to some embodiments;

[0054] Figure 13 is a structural diagram of the magnet assembly shown in Figure 12 viewed from above;

[0055] Figure 14 is a cross-sectional view of BB in Figure 13;

[0056] Figure 15 is a flowchart of a method for processing a secondary component according to some embodiments;

[0057] Figure 16 is a flowchart of a method for processing a secondary component according to some embodiments;

[0058] Figure 17 is a flowchart of a method for processing a secondary component according to some embodiments.

[0059] Reference numerals: 100, vehicle; 10, body; 20, wheel; 30, suspension assembly; 1, motor; 11, secondary assembly; 111, housing; 112, magnet assembly; 1121, magnetic pole; 1121A, first surface; 1121B, second surface; 112A, second adhesive layer; 112B, first adhesive layer; 12, primary assembly; 122, winding structure; 13, second support; 2, tower top assembly; 21, mounting base; 22, first support; 3, spring; 40, steering assembly; 401, steering shaft; 402, steering wheel; 50, steering knuckle. Detailed Implementation

[0060] The technical solutions of some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0061] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or relative positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in practical applications, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0062] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the meaning of the above terms in this disclosure based on the actual situation.

[0064] In some embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0065] In some embodiments of this disclosure, the words "exemplarily" or "for example" are used to indicate that they are examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts by way of example.

[0066] In related technologies, motors experience severe wear and tear during operation and are prone to noise, resulting in a short lifespan and affecting vehicle driving performance.

[0067] To address the aforementioned problems, this disclosure provides a vehicle 100 in some embodiments. The vehicle 100 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, a gasoline-powered vehicle, etc. The vehicle 100 can also be a sedan, truck, bus, lorry, trailer, etc.; this disclosure does not limit the type of vehicle.

[0068] Figure 1 is a structural diagram of a vehicle according to some embodiments, and Figure 2 is a schematic diagram of the connection relationship between the steering knuckle, steering assembly, and suspension assembly in the vehicle 100 shown in Figure 1. As shown in Figures 1 and 2, the vehicle 100 may include a wheel 20, a body 10, a steering knuckle 50, and a steering assembly 40. The steering knuckle 50 is disposed on the wheel 20. At least a portion of the steering assembly 40 is disposed on the body 10, and the steering assembly 40 is connected to the steering knuckle 50. The position of the steering assembly 40 connected to the steering knuckle 50 is eccentrically arranged relative to the rotation axis of the wheel 20, so that the steering assembly 40 can drive the wheel 20 to steer by means of the steering knuckle 50.

[0069] In some embodiments, the steering assembly 40 may include a steering wheel and a steering shaft. The steering wheel is located in the passenger compartment of the vehicle body 10 and is connected to the steering knuckle 50 via the steering shaft. When driving the vehicle 100, the user can turn the steering wheel to rotate the wheels 20 via the steering shaft and steering knuckle 50, thereby steering the vehicle 100.

[0070] In some embodiments, the vehicle 100 may further include a suspension assembly 30. The suspension assembly 30 is connected between the vehicle body 10 and the wheels 20 and is configured to buffer the impact forces transmitted to the vehicle body 10 from uneven road surfaces, so as to ensure the smoothness of the ride of the vehicle 100 and improve the driving comfort of the vehicle 100.

[0071] In some embodiments, the suspension assembly 30 may be connected between the vehicle body 10 and the steering knuckle 50 on the wheel 20 to prevent the suspension assembly 30 from rotating with the wheel 20. Based on this, as the steering assembly 40 drives the wheel to steer through the steering knuckle 50, one end of the suspension assembly 30 connected to the steering knuckle 50 will also rotate relative to the end of the suspension assembly 30 connected to the vehicle body 10, so as to ensure the smooth operation of the vehicle 100.

[0072] The structure of the suspension assembly 30 will be further described below.

[0073] Figure 3 is a structural diagram of the suspension assembly in the vehicle shown in Figure 1, and Figure 4 is a cross-sectional view of the suspension assembly shown in Figure 3. As shown in Figures 3 and 4, the suspension assembly 30 may include a motor 1, a tower mount assembly 2, and a spring 3.

[0074] Motor 1 can be, for example, a linear motor. The tower top assembly 2 is connected to motor 1 and to the vehicle body 10. Spring 3 is fitted around motor 1. During vehicle operation, affected by road bumps, motor 1 can adjust the distance between the vehicle body 10 and the wheels 20 to ensure the stability of the vehicle body 10. Furthermore, spring 3 will compress or extend under the action of the vehicle body 10 and the wheels 20 to achieve shock absorption.

[0075] Referring to Figure 4, the motor 1 may include a secondary component 11 and a primary component 12. The secondary component 11 can move relative to the primary component 12 to extend or shorten the motor 1. The direction in which the secondary component 11 moves relative to the primary component 12 is defined as a first direction. The first direction may be consistent with the height direction of the vehicle 100 or may be tilted relative to the height direction of the vehicle. This disclosure does not limit this direction.

[0076] In some embodiments, the secondary component 11 can also be connected to the vehicle body, and the primary component 12 can be connected to the wheels, or vice versa.

[0077] One of the secondary component 11 and the primary component 12 is adapted to connect the wheel 20.

[0078] In some embodiments, one of the secondary component 11 and the primary component 12 is adapted to connect the wheel 20 via a component such as a steering knuckle 50 or a connecting arm, and the other of the secondary component 11 and the primary component 12 is adapted to connect the vehicle body 10.

[0079] In some embodiments, the other of the secondary component 11 and the primary component 12 is adapted to connect to the vehicle body 10 via the tower top component 2.

[0080] The following embodiments are further descriptions based on the secondary component 11 being adapted to connect to the wheel 20 and the primary component 12 being adapted to connect to the vehicle body 10, and should not be considered as limiting the structure of this disclosure. For example, the secondary component 11 is adapted to connect to the wheel 20 via a component such as a steering knuckle 50 or a connecting arm, and the primary component 12 is adapted to connect to the vehicle body 10 via a strut top component 2.

[0081] Referring to Figure 4, the tower top assembly 2 may include a mounting base 21 and a first support portion 22. The mounting base 21 is fixed to the primary assembly 12 and is adapted to connect to the vehicle body 10. The first support portion 22 is disposed on the mounting base 21. The secondary assembly 11 also includes a second support portion 13. In some embodiments, the second support portion 13 is connected to the housing 111 of the secondary assembly 11.

[0082] The motor 1 also includes an electrical connection structure that can be fixed to the tower top assembly 2. The electrical connection structure is connected to the primary assembly 12 to supply current to the primary assembly 12, thereby driving the primary assembly 12 to move relative to the secondary assembly 11 in the aforementioned first direction.

[0083] Spring 3 connects the top assembly 2 and the secondary assembly 11. In some embodiments, spring 3 connects the first support 22 and the second support 13.

[0084] In some embodiments, referring to Figure 4, spring 3 can be a cylindrical helical spring or an air spring, and the helical spring can be a cylindrical helical spring, sleeved around the periphery of motor 1. In other embodiments, spring 3 can also be a tower spring, disc spring, etc. Some embodiments of this disclosure are mainly illustrated by using a cylindrical helical spring as spring 3, which should not be considered as a special limitation of this disclosure.

[0085] In one application condition, the primary component 12 supports the vehicle body 10 at a suitable height. When the secondary component 11 and the primary component 12 move relative to each other, the distance between the first support 22 and the second support 13 changes, so that the spring 3 extends and retracts with the relative movement of the secondary component 11 and the primary component 12, thereby maintaining the stability of the vehicle body 10 and achieving a good vibration reduction effect.

[0086] Referring to Figures 4 to 9, the secondary component 11 includes a housing 111 and a magnet assembly 112. The magnet assembly 112 includes a plurality of magnets 1121, which are stacked along a first direction. In a second direction, the plurality of magnets 1121 are fixed to the housing 111 by a first adhesive layer 112B. Each magnet 1121 has a first surface 1121A and a second surface 1121B that are opposite to each other in the second direction. The first surface 1121A is fixedly connected to the first adhesive layer 112B. Here, the first and second directions are perpendicular.

[0087] In some embodiments, the primary component 12 includes a winding structure 122, and a magnet component 112 is adapted to cooperate with the winding structure 122 to reciprocate relative to the winding structure 122 in a first direction. This allows the secondary component 11 to reciprocate relative to the primary component 12 in the first direction.

[0088] In some embodiments, the secondary component 11 can reciprocate between a first position and a second position relative to the primary component 12 along a first direction. Along the first direction, the length of the motor 1 when the secondary component 11 is in the first position is a first length, and the length of the motor 1 when the secondary component 11 is in the second position is a second length. Here, the first length is less than the second length.

[0089] In some embodiments, the housing 111 is a cylindrical structure, a plurality of magnets 1121 are disposed inside the housing 111 and fixed to the inner peripheral wall of the housing 111, and the winding structure 122 is located in the area surrounded by the plurality of magnets 1121.

[0090] Here, the flatness of the second surface 1121B is less than the flatness of the first surface 1121A of the plurality of magnets 1121.

[0091] It should be noted that, as shown in Figure 9, the flatness of the first surface 1121A refers to the difference between the minimum distance H1 between the surface of the multiple magnets 1121 facing the housing 111 and the maximum distance H2 between the surface of the multiple magnets 1121 facing the housing 111 and the housing 111. For example, if the difference between H2 and H1 is 0.15mm, then the flatness of the first surface 1121A is 0.15mm.

[0092] It is understandable that the flatness of the second surface 1121B refers to the difference between the minimum distance between the surface of the multiple magnets 1121 facing away from the housing 111 and the maximum distance between the surface of the multiple magnets 1121 facing away from the housing 111 and the housing 111. With the above configuration, since the flatness of the second surface 1121B is less than the flatness of the first surface 1121A of the multiple magnets 1121, the difference in the surface area of ​​the multiple magnets 1121 forming the first surface 1121A is larger, while the difference in the surface area of ​​the multiple magnets 1121 forming the second surface 1121B is smaller.

[0093] In this way, the thickness of the first adhesive layer 112B between the multiple magnets 1121 and the housing 111 is not equal, which can increase the bonding area between the first adhesive layer 112B and the multiple magnets 1121 and improve the bonding force.

[0094] At the same time, it can reduce the magnitude of the friction between the primary component 12 and the secondary component 11, thereby reducing the no-load resistance of the motor 1.

[0095] Furthermore, by providing the first adhesive layer 112B, the first adhesive layer 112B can fix the magnet assembly 112 to the housing 111 together, thereby realizing the installation of multiple magnets 1121. Compared with fixing multiple magnets 1121 to the housing 111 by means of screwing, welding or other methods, the first adhesive layer 112B provided in some embodiments of this disclosure can simplify the fixing process of multiple magnets 1121 to the housing 111, thereby facilitating the fixing of multiple magnets 1121 to the housing 111.

[0096] In addition, through the housing 111, since multiple magnets 1121 are fixed to the inner peripheral wall of the housing 111, the housing 111 can protect the multiple magnets 1121, prevent the multiple magnets 1121 from being damaged, so as to ensure the normal use of the multiple magnets 1121 and extend the service life of the secondary component 11.

[0097] In some embodiments, as shown in FIG9, along the second direction, a plurality of magnets 1121 form the surface of the first surface 1121A. That is, the smaller the difference between the surfaces of the plurality of magnets 1121 facing the housing 111, the smaller the flatness of the first surface 1121A.

[0098] For the second surface 1121B, the smaller the flatness of the second surface 1121B, the smaller the difference between the surfaces of the first surface 1121A composed of multiple magnets 1121, and the smaller the change in the air gap between the multiple magnets 1121 and the winding structure 122. This makes the air gap between the multiple magnets 1121 and the winding structure 122 more uniform, thereby reducing the magnitude of the wave force D of the resistance f during the relative movement of the secondary component 11 and the primary component 12, so as to prevent the resistance between the secondary component 11 and the primary component 12 from being too large and affecting the performance of the motor 1.

[0099] In some embodiments, the flatness of the second surface 1121B is less than or equal to 0.08 mm.

[0100] With the above settings, since the flatness of the second surface 1121B is less than or equal to 0.08mm, the surface of the second surface 1121B formed by the multiple magnets 1121 is relatively neat. This can reduce the friction between the secondary component 11 and the primary component 12 during the relative movement of the secondary component 11 and the primary component 12, so that the secondary component 11 and the primary component 12 can move relative to each other more smoothly and reduce the no-load resistance of the motor 1.

[0101] In some embodiments, the motor 1 can be vertically mounted on the stand, and the secondary component 11 and the primary component 12 can be moved relative to each other by dragging the stand. The magnitude of the frictional force between the secondary component 11 and the primary component 12 can be determined by detecting the magnitude of the force applied by the stand during the relative movement of the secondary component 11 and the primary component 12, thereby determining the flatness of the second surface 1121B.

[0102] Based on this, in some embodiments, the flatness of the second surface 1121B is less than or equal to 0.06 mm.

[0103] With the above settings, compared to the flatness of the surfaces of the multiple magnets 1121 facing the winding structure 122 being less than or equal to 0.08 mm, when the flatness of the surfaces of the multiple magnets 1121 facing the winding structure 122 is less than or equal to 0.06 mm, the friction between the secondary component 11 and the primary component 12 during relative movement can be further reduced, allowing the secondary component 11 and the primary component 12 to move relative to each other more smoothly, and further reducing the no-load resistance of the motor 1.

[0104] In some embodiments, the flatness of the second surface 1121B is greater than or equal to 0.02 mm.

[0105] With the above settings, when the flatness of the second surface is greater than or equal to 0.02mm, the friction between the secondary component 11 and the primary component 12 is prevented from being too small, thereby reducing the knocking noise emitted by the motor 1 during operation.

[0106] Furthermore, when the flatness of the second surface 1121B is less than 0.02mm, the machining accuracy of the multiple magnets 1121 is too high, and the machining difficulty is relatively large. Therefore, by making the flatness of the surface of the multiple magnets 1121 facing the winding structure 122 greater than or equal to 0.02mm, the machining difficulty of the multiple magnets 1121 can be reduced, making the machining of the multiple magnets 1121 more convenient.

[0107] For example, the flatness of the second surface 1121B can be 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, etc.

[0108] In some embodiments, the flatness of the first surface 1121A is greater than 0.1 mm.

[0109] With the above settings, when the flatness of the first surface 1121A is greater than 0.1mm, the processing accuracy of the first surface 1121A is low, which facilitates the processing of multiple magnets 1121.

[0110] In some embodiments, the flatness of the first surface 1121A is less than or equal to 0.2 mm.

[0111] With the above settings, when the flatness of the first surface 1121A is less than or equal to 0.2mm compared to when the flatness of the first surface 1121A is greater than 0.2mm, the flatness of the first surface 1121A is less than or equal to 0.2mm, which can avoid the flatness of the first surface 1121A being too poor, thereby avoiding the excessive no-load resistance of the motor 1, reducing the wear of the motor 1, and extending the service life of the motor 1.

[0112] For example, the flatness of the first surface 1121A can be 0.1mm, 0.12mm, 0.13mm, 0.15mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, etc.

[0113] Based on this, in some embodiments, this disclosure also provides a processing method for a secondary component 11. Figure 10 is a flowchart of one of the processing methods for a secondary component according to some embodiments. As shown in Figure 10, the processing method includes:

[0114] Step S1: Stack multiple magnets and fit them onto the fixture.

[0115] Step S2: Make the fixture face the second surface 1121B.

[0116] Step S3: Drive the fixture to press the second surface 1121B.

[0117] Step S4: Make the flatness of the second surface 1121B less than or equal to 0.08mm.

[0118] In this way, by simultaneously pressing the second surface 1121B of multiple magnets 1121 with the jig, the distance between the surfaces of the multiple magnets 1121 forming the second surface 1121B and the jig can be kept consistent, thereby improving the flatness of the second surface 1121B, reducing the friction between the secondary component 11 and the primary component 12, and reducing the no-load resistance of the motor 1.

[0119] In some embodiments, please refer to Figures 11 to 14, a plurality of magnets 1121 are in a ring shape, and the second surface 1121B of the plurality of magnets 1121 is the inner circumferential surface of the magnet.

[0120] Step S1: Stacking multiple magnets and fitting them onto the fixture, including:

[0121] Step S11: Stack multiple magnets and place them around the jig.

[0122] Step S2: Positioning the fixture facing the second surface 1121B, including:

[0123] Step S21: Make the fixture face the inner circumferential surfaces of the multiple magnets.

[0124] Step S3: Drive the fixture to press the second surface 1121B, including:

[0125] Step S31: Drive the fixture to expand to compress the second surface 1121B.

[0126] With the above setup, as the fixture expands, its size gradually increases. Since the multiple magnets 1121 are ring-shaped and fitted around the periphery of the fixture, during the expansion process, the fixture will first contact the magnet with the smaller inner diameter and expand the inner diameter of that magnet. Subsequently, the fixture will contact the magnet with the larger inner diameter until the inner circumferential surfaces of the multiple magnets 1121 are compressed, so that the flatness of the inner circumferential surfaces of the multiple magnets 1121 is less than or equal to 0.08 mm, thereby completing the processing of the multiple magnets 1121.

[0127] Figure 15 is a flowchart of a third method for processing a secondary component according to some embodiments. As shown in Figure 15, step S31: driving the fixture to expand to extrude the second surface 1121B includes:

[0128] Step S32: Heat the fixture to expand it, thereby pressing the second surface 1121B.

[0129] In this way, the size of the jig can be increased more uniformly, thereby ensuring that the shape of the multiple magnets 1121 will not change during the process of pressing the jig onto the multiple magnets 1121, so as to ensure the normal function of the multiple magnets 1121.

[0130] In some embodiments, as shown in FIG7, the magnet assembly 112 further includes a second adhesive layer 112A, which is disposed between two adjacent magnets along a first direction, and the second adhesive layer 112A is a thermosetting adhesive.

[0131] With the above configuration, two adjacent magnets can be fixed together by a layer of thermosetting adhesive, which makes it convenient to fix multiple magnets 1121 to form a magnet assembly 112.

[0132] Meanwhile, by setting the thermosetting adhesive, during the process of heating the mold to expand the mold and processing multiple magnets 1121, the mold can also heat the second adhesive layer 112A, so that the second adhesive layer 112A is heated and cured, thereby enabling multiple magnets 1121 to be stably connected together and ensuring the structural strength of the secondary component 11.

[0133] Figure 16 is a flowchart of a processing method for a secondary component according to some embodiments. As shown in Figure 16, before heating the fixture, the processing method further includes:

[0134] Step S0: A second adhesive layer 112A is provided between adjacent magnets. The material of the second adhesive layer 112A is thermosetting adhesive.

[0135] At this point, step S32: heating the fixture to expand it, thereby pressing the second surface 1121B, includes:

[0136] Step S33: Heat the fixture to expand it, thereby pressing the second surface 1121B and curing the second adhesive layer.

[0137] In this way, by setting the thermosetting adhesive, during the process of processing multiple magnets 1121 using a mold, the second adhesive layer 112A can also be heated to cure the second adhesive layer 112A, thereby fixing the multiple magnets 1121.

[0138] In some embodiments, the heating temperature of the fixture is greater than or equal to 100°C and less than or equal to 120°C.

[0139] Furthermore, in some embodiments, the glass transition temperature of the second adhesive layer 112A is greater than 120°C.

[0140] It's important to note that the glass transition temperature (Tg) is a crucial performance indicator for thermosetting plastics, referring to the temperature at which the plastic transitions from a glassy state to a rubbery state. Below the glass transition temperature, thermosetting plastics exist in a glassy state, with restricted molecular chain movement, exhibiting high hardness and brittleness. Above the glass transition temperature, the plastic gradually transforms into a rubbery state, with increased molecular chain movement, making the material softer and more easily deformable.

[0141] When using thermosetting adhesives, ensure that they operate below their glass transition temperature to guarantee stable and reliable material performance.

[0142] With the above settings, during the jig processing of the magnet assembly 112, the heating temperature of the jig is within the range of [100℃, 120℃]. Setting the glass transition temperature of the second adhesive layer 112A to above 120℃ can prevent the second adhesive layer 112A from failing during the shaping process, thereby ensuring the fixing effect of the second adhesive layer 112A on the two adjacent magnets and ensuring the stability of the overall structure of the secondary assembly 11.

[0143] In some embodiments, the fixture may be made of ceramic.

[0144] In other embodiments, the material of the fixture can be aluminum alloy, which has a fixed coefficient of thermal expansion and a large coefficient of expansion. This makes it easy to control the degree of expansion of the aluminum alloy and can shorten the processing time of multiple magnets 1121 and improve the processing efficiency of multiple magnets 1121.

[0145] In some embodiments, the thickness of the second adhesive layer 112A along the first direction is greater than or equal to 0.02 mm and less than or equal to 0.03 mm.

[0146] For example, the thickness of the second adhesive layer 112A along the first direction can be 0.02mm, 0.023mm, 0.026mm, 0.028mm, 0.03mm, etc.

[0147] With the above configuration, the thickness of the second adhesive layer 112A along the first direction is greater than or equal to 0.02 mm, which avoids the second adhesive layer 112A being too thin, thereby ensuring the fixing effect of the second adhesive layer 112A on the two adjacent magnets. The thickness of the second adhesive layer 112A along the first direction is less than or equal to 0.03 mm, which avoids the second adhesive layer 112A being too thick, thereby avoiding the secondary component 11 being too large in the first direction, thus facilitating the spatial arrangement of the secondary component 11.

[0148] In other embodiments, the plurality of magnets 1121 are in a ring shape, the second surface 1121B of the plurality of magnets 1121 is the outer peripheral surface of the magnet, and the fixture is in a ring shape.

[0149] Figure 17 is a flowchart of a method for processing a secondary component according to some embodiments. As shown in Figure 17, step S1: stacking multiple magnets and fitting them onto a fixture, including:

[0150] Step S12: Stack multiple magnets and fit them around the inner circumference of the fixture.

[0151] Step S2: Positioning the fixture facing the second surface 1121B, including:

[0152] Step S22: Make the fixture face the outer peripheral surfaces of the multiple magnets.

[0153] Step S3: Drive the fixture to press the second surface 1121B, including:

[0154] Step S31: Drive the fixture to contract to compress the second surface 1121B.

[0155] With the above setup, as the fixture shrinks, its size gradually decreases. Since the multiple magnets 1121 are ring-shaped and fitted around the inner circumference of the fixture, during the expansion of the fixture, the inner circumference of the fixture will first contact the magnet with the larger outer diameter and reduce the outer diameter of the magnet. Subsequently, the fixture will contact the magnet with the smaller outer diameter until the outer circumference of the multiple magnets 1121 is compressed, so that the flatness of the outer circumference of the multiple magnets 1121 is less than or equal to 0.08 mm, thereby completing the processing of the multiple magnets 1121.

[0156] In the description of this specification, exemplary features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0157] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A secondary component (11), comprising: Casing (111); Multiple magnets (1121) are stacked sequentially in a first direction. In a second direction, the multiple magnets (1121) are fixed to the housing by a first adhesive layer (112B). The multiple magnets (1121) have a first surface (1121A) and a second surface (1121B) that are arranged opposite to each other in the second direction. The first surface (1121A) is connected to the first adhesive layer (112B). The flatness of the second surface (1121B) is less than that of the first surface (1121A) of the plurality of magnets (1121), and the first direction and the second direction are perpendicular.

2. The secondary component (11) according to claim 1, wherein, The flatness of the second surface (1121B) is less than or equal to 0.08 mm.

3. The secondary component (11) according to claim 1 or 2, wherein, The flatness of the second surface (1121B) is less than or equal to 0.06 mm.

4. The secondary component (11) according to any one of claims 1 to 3, wherein, The flatness of the second surface (1121B) is greater than or equal to 0.02 mm.

5. The secondary component (11) according to any one of claims 1 to 4, wherein, The flatness of the first surface (1121A) is greater than 0.1 mm.

6. The secondary component (11) according to claim 4 or 5, wherein, The flatness of the first surface (1121A) is less than or equal to 0.2 mm.

7. The secondary component (11) according to any one of claims 1 to 6 further includes a second adhesive layer (112A) disposed between two adjacent magnets of the plurality of magnets (1121) along the first direction, and the second adhesive layer (112A) is a thermosetting adhesive.

8. The secondary component (11) according to claim 7, wherein, The glass transition temperature of the second adhesive layer (112A) is greater than 120°C.

9. The secondary component (11) according to claim 7 or 8, wherein, The thickness of the second adhesive layer (112A) along the first direction is greater than or equal to 0.02 mm and less than or equal to 0.03 mm.

10. An electric motor (1), wherein, include: Primary components (12); and According to any one of claims 1 to 9, the secondary component (11) and the primary component (12) include a winding structure (122) that cooperates with the plurality of magnets (1121) to allow the secondary component (11) to reciprocate relative to the primary component (12) in the first direction.

11. The motor (1) according to claim 10, wherein, The secondary component (11) can reciprocate between a first position and a second position relative to the primary component (12) along the first direction; The length of the motor (1) when the secondary component (11) is in the first position is a first length, and the length of the motor when the secondary component (12) is in the second position is a second length, wherein the first length is less than the second length.

12. The motor (1) according to claim 10 or 11, wherein, The housing (111) is a cylindrical structure. The plurality of magnets (1121) are disposed inside the housing (111) and fixed to the inner peripheral wall of the housing (111). The winding structure (122) is located in the area surrounded by the plurality of magnets (1121).

13. A suspension assembly (30), wherein, include: The motor (1) according to any one of claims 10 to 12; A tower top assembly (2), wherein the tower top assembly (2) is disposed in one of the primary assembly (12) and the secondary assembly (11) of the motor (1), and the tower top assembly (2) is adapted to connect to the vehicle body (10); and A spring (3) is disposed between the tower top assembly (2) and another of the primary assembly (12) and the secondary assembly (11), and the other of the primary assembly (12) and the secondary assembly (11) is adapted to connect a wheel (20).

14. A vehicle (100), wherein, include: The wheel (20), the body (10), the steering knuckle (50), the steering assembly (40), and the suspension assembly (30) according to claim 13, wherein the steering knuckle (50) is disposed on the wheel (20), the steering assembly (40) is connected to the steering knuckle (50), and the suspension assembly (30) is connected between the body (10) and the steering knuckle (50).

15. A method for processing a secondary component, wherein, The secondary component (11) includes a plurality of magnets (1121), which are stacked sequentially in a first direction. In a second direction, the plurality of magnets (1121) are fixed to the housing by a first adhesive layer (112B). The plurality of magnets (1121) have a first surface (1121A) and a second surface (1121B) arranged opposite to each other in the second direction. The first surface (1121A) is fixedly connected to the first adhesive layer (112B). The processing method includes: The plurality of magnets (1121) are stacked and fitted onto a fixture, with the fixture facing the second surface (1121B) of the plurality of magnets (1121). The jig is driven to press the second surface (1121B) of the plurality of magnets (1121) so that the flatness of the second surface (1121B) of the plurality of magnets (1121) is less than or equal to 0.08 mm.

16. The processing method according to claim 15, wherein, The plurality of magnets (1121) are in a ring shape, and the second surface (1121B) of the plurality of magnets (1121) is the inner circumferential surface of the magnet; The step of fitting the plurality of magnets (1121) onto the fixture includes: The plurality of magnets (1121) are fitted around the periphery of the fixture so that the fixture and the inner circumferential surfaces of the plurality of magnets (1121) face each other; The second surface (1121B) of the fixture that drives the plurality of magnets (1121) to press includes: The jig is driven to expand in order to compress the second surface (1121B) of the plurality of magnets (1121).

17. The processing method according to claim 16, wherein, The process of driving the fixture to expand includes: The fixture is heated to cause it to expand.

18. The processing method according to claim 17, wherein, The heating temperature of the fixture is greater than or equal to 100°C and less than or equal to 120°C.

19. The processing method according to claim 17 or 18, wherein, The fixture is made of aluminum alloy or ceramic.

20. The processing method according to claim 17 or 18, wherein, Before heating the fixture, the processing method further includes: A second adhesive layer (112A) is provided between adjacent magnets, and the material of the second adhesive layer (112A) is thermosetting adhesive; The heating of the fixture includes: The fixture is heated, and the second adhesive layer (112A) is cured.

21. The processing method according to claim 15, wherein, The plurality of magnets (1121) are in a ring shape, and the second surface (1121B) of the plurality of magnets (1121) is the outer peripheral surface of the magnet; the fixture is in a ring shape. The step of fitting the plurality of magnets (1121) onto the fixture includes: The plurality of magnets (1121) are fitted onto the inner periphery of the fixture so that the fixture faces the outer periphery of the plurality of magnets (1121); The second surface (1121B) of the fixture that drives the plurality of magnets (1121) to press includes: The jig is driven to contract to compress the second surface (1121B) of the plurality of magnets (1121).

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