Motor, suspension assembly, vehicle, and bearing

Abstract

A motor, a suspension assembly, a vehicle, and a bearing. The motor comprises a first assembly and a second assembly, the first assembly and the second assembly are movable relative to each other, a first bearing is provided between the first assembly and the second assembly, and the first bearing comprises a base body and a plurality of first solid lubricating members. The base body is cylindrical, and the base body has a first end surface. The plurality of first solid lubricating members are provided on the base body, and projections of the plurality of first solid lubricating members on the first end surface of the base body form a continuous annular structure.

Description

Motors, suspension components, vehicles and bearings

[0001] This application claims priority to Chinese patent application No. 202423322828.7, filed on December 31, 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 an electric motor, suspension assembly, vehicle, and bearing. Background Technology

[0003] A vehicle includes a body, wheels, and a suspension assembly connecting the body and wheels. The suspension assembly buffers the impact forces transmitted to the body from uneven road surfaces to ensure a smooth ride. Some suspension assemblies also include a motor; adjusting the motor's movement helps maintain a stable vehicle position and improve ride comfort.

[0004] The motor includes a first component and a second component, which are movable relative to each other in a first direction. At least one of the first component and the second component is provided with a bearing, and the other component is at least partially disposed within the bearing. This improves the coaxiality of the first component and the second component and enhances the smoothness of motor operation. Summary of the Invention

[0005] This disclosure provides an electric motor, a suspension assembly, a vehicle, and a bearing.

[0006] In a first aspect, a motor is provided for use in a vehicle suspension, comprising a first component and a second component, the first component and the second component being movable relative to each other, and a first bearing being disposed between the first component and the second component. The first bearing includes a base and a plurality of first solid lubricants. The base is cylindrical and has a first end face. The plurality of first solid lubricants are disposed on the base, and the projections of the plurality of first solid lubricants on the first end face of the base form a continuous annular structure.

[0007] With the above configuration, since the projections of multiple first solid lubricants onto the first end face of the substrate form a continuous annular structure, during the relative movement of the first and second components, the other component can contact the first solid lubricant around its circumference along the substrate. This avoids friction between the other component and the substrate, ensuring the lubrication effect of the bearing.

[0008] In some embodiments, the substrate has m layers of receiving holes along the axial direction for mounting a first solid lubricant. The substrate also includes a second end face opposite to the first end face. The m layers of receiving holes are denoted as the 1st layer, ..., the mth layer, respectively, in the direction from the first end face to the second end face. Adjacent layers of receiving holes are staggered circumferentially. m is an integer ≥ 2.

[0009] In some embodiments, the axial distance between the center of the first layer receiving hole and the first end face is hx1, and the axial distance between the center of the m layer receiving hole and the second end face is hx2; hx1 and hx2 satisfy at least one of the following: hx1 ≥ 1.5 mm, or hx2 ≥ 1.5 mm.

[0010] In some embodiments, the axial distance between the centers of two adjacent receiving holes in the m-th receiving hole is hx, hx≥2r, where r is the radius of the receiving hole.

[0011] In some embodiments, the first layer receiving hole includes a first receiving hole, the second layer receiving hole includes a second receiving hole, and the projections of the first receiving hole and the second receiving hole on the first end face at least partially overlap.

[0012] In some embodiments, the first layer of receiving holes includes a first receiving hole, and the second layer of receiving holes includes a second receiving hole. The first receiving hole and the second receiving hole satisfy one of the following: the projections of the first receiving hole and the second receiving hole on the first end face are adjacent; or, the projection boundaries of the first receiving hole and the second receiving hole on the first end face are adjacent.

[0013] In some embodiments, the distribution rate of the plurality of accommodating holes on the first bearing is greater than or equal to 10% and less than or equal to 30%.

[0014] In some embodiments, the number of accommodating holes in each of the m-layer accommodating holes is n, a≤n≤1.5a, and a=[2.75(Rr)(hx1-r)(hx2-r) / rm(hx-2r+1)]+1, where n is an integer, R is the inner diameter of the substrate, and r is the inner diameter of the accommodating hole.

[0015] In some embodiments, the radius r of the accommodating hole satisfies: r < 1.5b, where b is the wall thickness of the substrate.

[0016] In some embodiments, the substrate has a first mating surface adapted to mate with one of a first component and a second component; one end opening of a plurality of receiving holes is located on the first mating surface; the first solid lubricant satisfies one of the following: at least a portion of the first solid lubricant is disposed on the first mating surface; or, at least a portion of the first solid lubricant is exposed on the first mating surface.

[0017] In some embodiments, one of the first component and the second component includes a body and a wear-resistant component; the body has a second mating surface adapted to mate with the first bearing; the wear-resistant component satisfies one of the following: at least a portion of the wear-resistant component is disposed on the second mating surface; or, at least a portion of the wear-resistant component is exposed on the second mating surface.

[0018] In some embodiments, the first bearing is fixed to the first component, and the second component includes a mandrel that is slidably disposed within the first bearing.

[0019] In some embodiments, the number of receiving holes in each layer of the first bearing is n, where 20 ≤ n ≤ 30, and n is an integer.

[0020] In some embodiments, the number of accommodating holes in each layer of the first bearing is n, where 27 ≤ n ≤ 30, and n is an integer.

[0021] In some embodiments, the first component further includes a guide. A guide hole is provided in the spindle, and the guide is received in the guide hole. When the first component moves relative to the second component, the guide moves within the guide hole.

[0022] In some embodiments, the motor further includes a second bearing disposed in a guide hole and connected to a spindle, and a guide member slidably passing through the second bearing.

[0023] In some embodiments, the number of receiving holes in each layer of the second bearing is greater than or equal to 10 and less than or equal to 20.

[0024] In a second aspect, a suspension assembly is provided, including the aforementioned motor, tower mount assembly, and spring, wherein the tower mount assembly is disposed in one of a first assembly and a second assembly of the motor and is adapted to connect to the vehicle body, and the spring is disposed in the other of the first assembly and the second assembly, between the tower mount assembly and the other of the first assembly and the second assembly, and is adapted to connect to a wheel.

[0025] Thirdly, a vehicle is provided that satisfies one of the following: the vehicle includes the aforementioned motor, or the vehicle includes the aforementioned suspension assembly.

[0026] Fourthly, a bearing is provided, including a base and a plurality of first solid lubricants. The base is cylindrical and has a first end face. The plurality of first solid lubricants are disposed on the base, and the projections of the plurality of first solid lubricants on the first end face of the base form a continuous annular structure.

[0027] In some embodiments, the substrate is provided with m layers of receiving holes along the axial direction, the receiving holes being used to install a first solid lubricant; the substrate also includes a second end face opposite to the first end face; in the direction from the first end face to the second end face, the m layers of receiving holes are respectively denoted as the 1st layer receiving hole, ..., the mth layer receiving hole; adjacent two layers of receiving holes in the m layers are staggered along the circumference of the substrate, where m is an integer ≥2.

[0028] In some embodiments, the number of accommodating holes in each of the m-layer accommodating holes is n, a≤n≤1.5a, and a=[2.75(Rr)(hx1-r)(hx2-r) / rm(hx-2r+1)]+1, where n is an integer, R is the inner diameter of the substrate, and r is the radius of the accommodating hole.

[0029] In some embodiments, the radius r of the accommodating hole satisfies: r < 1.5b, where b is the wall thickness of the substrate. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the 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.

[0031] Figure 1 is a structural schematic diagram of a vehicle according to some embodiments;

[0032] Figure 2 is a schematic diagram showing the connection relationship between the steering knuckle, steering assembly, and suspension assembly in the vehicle shown in Figure 1;

[0033] Figure 3 is a structural diagram of the middle suspension assembly of the vehicle shown in Figure 1;

[0034] Figure 4 is a cross-sectional view of the suspension assembly shown in Figure 3;

[0035] Figure 5 is a schematic diagram of the external structure of a bearing according to some embodiments;

[0036] Figure 6 is a schematic diagram of the external structure of the first bearing according to some embodiments;

[0037] Figure 7 is a schematic diagram showing the relationship between wear amount and number of accommodating holes according to some embodiments;

[0038] Figure 8 is a schematic diagram showing the relationship between starting resistance and the number of receiving holes according to some embodiments;

[0039] Figure 9 is a schematic diagram of the external structure of the second bearing according to some embodiments;

[0040] Figure 10 is a schematic diagram illustrating another relationship between starting resistance and the number of receiving holes according to some embodiments.

[0041] Reference numerals: 100, vehicle; 10, body; 20, wheel; 30, suspension assembly; 1, motor; 11, first assembly; 114, guide element; 12, second assembly; 121, spindle; 121A, guide hole; 115, first bearing; 124, second bearing; 13, second support; 2, tower top assembly; 21, mounting base; 22, first support; 3, elastic element; 40, steering assembly; 401, steering shaft; 402, steering wheel; 50, steering knuckle; 300, bearing; 302, base; 300A, receiving hole. Detailed Implementation

[0042] The technical solutions of the 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 of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0043] 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.

[0044] 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.

[0045] 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 according to the circumstances.

[0046] In 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.

[0047] In this disclosure, the word "for example" is used to indicate that something is an example, illustration, or description. Any embodiment or design described as "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Rather, the use of the word "for example" is intended to present the relevant concepts by way of example.

[0048] In the description of this specification, features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0049] Currently, motors are typically used as actuators in suspension components. The high operating frequency of motors leads to a relatively short lifespan for motor bearings.

[0050] Based on this, some embodiments of this disclosure provide a vehicle. The vehicle can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, a gasoline vehicle, etc. Vehicle 100 can also be a sedan, truck, bus, lorry, trailer, etc., and this disclosure does not limit the type of vehicle.

[0051] As shown in Figures 1 and 2, Figure 1 is a structural schematic diagram of a vehicle 100 according to some embodiments, and Figure 2 is a schematic diagram of the connection relationship between the steering knuckle 50, the steering assembly 40, and the suspension assembly 30 in the vehicle 100 shown in Figure 1. 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.

[0052] 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 via the steering shaft and the steering knuckle 50, thereby steering the vehicle 100.

[0053] 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 to buffer the impact force transmitted to the vehicle body 10 from uneven road surfaces, so as to ensure the smoothness of the vehicle 100 and improve the driving comfort of the vehicle 100.

[0054] 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.

[0055] The structure of the suspension assembly 30 will be further described below.

[0056] As shown in Figures 3 and 4, Figure 3 is a structural diagram of the suspension assembly 30 in the vehicle 100 shown in Figure 1, and Figure 4 is a cross-sectional view of the suspension assembly 30 shown in Figure 3. The suspension assembly 30 may include a motor 1, a tower mount assembly 2, and a spring 3.

[0057] 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.

[0058] Figure 5 is a schematic diagram of the external structure of a bearing according to some embodiments. As shown in Figure 5, the motor 1 may include a first component 11 and a second component 12. The first component 11 is movable relative to the second component 12 to extend or shorten the motor 1. The direction in which the first component 11 moves relative to the second 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.

[0059] In some embodiments, the first component 11 may be connected to the vehicle body and the second component 12 may be connected to the wheels, or vice versa.

[0060] One of the first component 11 and the second component 12 is adapted to connect the wheel 20. For example, one of the first component 11 and the second 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 first component 11 and the second component 12 is adapted to connect the vehicle body 10. For example, the other of the first component 11 and the second component 12 is adapted to connect the vehicle body 10 via a strut top component 2.

[0061] The following embodiments are further descriptions based on the premise that the first component 11 is adapted to connect the wheel 20 and the second component 12 is adapted to connect the vehicle body 10, and should not be considered as limiting the structure of this disclosure. For example, the first component 11 is adapted to connect the wheel 20 by means of a component such as a steering knuckle 50 or a connecting arm, and the second component 12 is adapted to connect the vehicle body 10 by means of a top mount component 2.

[0062] Referring to Figure 4, the tower top assembly 2 may include a mounting base 21 and a first support 22. The mounting base 21 is fixed to the second assembly 12 and is adapted to connect to the vehicle body 10. The first support 22 is disposed on the mounting base 21. The first assembly 11 also includes a second support 13. For example, the second support 13 is connected to the housing 111 of the first assembly 11.

[0063] 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 second assembly 12 to supply current to the second assembly 12, thereby driving the second assembly 12 to move relative to the first assembly 11 in the aforementioned first direction.

[0064] Spring 3 is connected between the tower top assembly 2 and the first assembly 11. For example, spring 3 is connected between the first support 22 and the second support 13.

[0065] For example, referring to Figure 4, spring 3 can be a cylindrical helical spring or an air spring. The helical spring can be a cylindrical helical spring sleeved around the motor 1. In some other embodiments, spring 3 can also be a tower spring, disc spring, etc. This disclosure uses spring 3 as an example of a cylindrical helical spring, which should not be considered as a special limitation of this disclosure.

[0066] In one application condition, the second component 12 supports the vehicle body 10 to maintain a suitable height. When the first component 11 and the second component 12 move relative to each other, the distance between the first support 22 and the second support 13 will change accordingly, so that the spring 3 will extend and retract with the relative movement of the first component 11 and the second component 12, so as to keep the vehicle body 10 stable and have a good vibration reduction effect.

[0067] Based on this, some embodiments of this disclosure provide a bearing, as shown in Figures 4 and 5, wherein the bearing 300 is disposed between the first component 11 and the second component 12. The bearing 300 is fixed to one of the first component 11 and the second component 12, and slides in engagement with the other of the first component 11 and the second component 12.

[0068] With the above configuration, the bearing 300 is located between the first component 11 and the second component 12, which can lubricate the first component 11 and the second component 12, thereby reducing the resistance during the relative movement of the first component 11 and the second component 12, so that the first component 11 and the second component 12 can move smoothly relative to each other, and improve the smoothness of the motor 1 operation.

[0069] In some embodiments, as shown in FIG5, the bearing 300 includes a base 302 and a plurality of first solid lubricants A7. The base 302 is cylindrical and has a first end face A3. The plurality of first solid lubricants A7 are disposed on the base 302, and the projections of the plurality of first solid lubricants A7 onto the first end face A3 of the base 302 form a continuous annular structure.

[0070] With the above configuration, since the projections of multiple first solid lubricants A7 onto the first end face A3 of the base 302 form a continuous annular structure, during the relative movement of the first component 11 and the second component 12, along the circumference of the base 302, the other component of the first component 11 and the second component 12 can contact the first solid lubricant A7 around its circumference. This avoids friction between the other component of the first component 11 and the second component 12 and the base 302, ensuring the lubrication effect of the bearing 300.

[0071] The substrate 302 is provided with multiple receiving holes 300A. The first solid lubricant A7 is disposed in the receiving hole 300A.

[0072] With the above settings, during the operation of motor 1, when the first component 11 and the second component 12 are squeezed together, the first solid lubricant A7 will be squeezed out from the receiving hole 300A and then slide in cooperation with the other of the first component 11 and the second component 12, thereby realizing the lubrication function of bearing 300.

[0073] Based on this, in some embodiments, the substrate 302 is provided with m layers of receiving holes along the axial direction. These receiving holes are used to install the first solid lubricant A7, and each layer includes n receiving holes. The substrate 302 also includes a second end face A4 opposite to the first end face A3. From the first end face A3 to the second end face A4, the m layers of receiving holes are respectively denoted as the 1st layer receiving hole (A1 in Figure 5), ..., the mth layer receiving hole (A2 in Figure 5), with adjacent layers of receiving holes staggered circumferentially. m is an integer ≥ 2.

[0074] With the above arrangement, along the axial direction of the base 302, multiple first solid lubricants A7 can be respectively housed in multiple layers of receiving holes. Compared with multiple first solid lubricants A7 being housed in the same layer, arranging multiple first solid lubricants A7 in multiple layers can facilitate the spatial arrangement of multiple first solid lubricants A7 on the base 302 and facilitate the processing of bearings.

[0075] It should also be noted that at the instant the motor 1 starts, the first component 11 and the second component 12 change from being relatively stationary to being relatively moving. Since the bearing 300 is in sliding fit with the other of the first component 11 and the second component 12, and the bearing 300 is provided with multiple receiving holes 300A, at the instant the motor 1 starts, it is necessary to overcome the static friction between the bearing 300 and the other of the first component 11 and the second component 12, so that the first component 11 and the second component 12 can move relative to each other.

[0076] When there are too many receiving holes 300A, the edge of the receiving hole 300A will contact the other of the first component 11 and the second component 12, thereby increasing the static friction between the bearing 300 and the other of the first component 11 and the second component 12, hindering the relative movement of the first component 11 and the second component 12. At this time, the strength of the bearing 300 is low and it is easy to deform. The edge of the receiving hole 300A on the deformed bearing 300 will protrude or be recessed relative to the inner surface of the bearing 300, which will further increase the static friction between the bearing 300 and the other of the first component 11 and the second component 12, further hindering the relative movement between the first component 11 and the components.

[0077] In this way, by accommodating multiple first solid lubricants A7 in multiple layers of accommodating holes, the number of accommodating holes 300A in each layer will not be too large, thus improving the structural strength of the bearing 300.

[0078] In addition, since the arrangement of multiple receiving holes 300A can improve the structural strength of the bearing 300, the bearing 300 is not easy to deform. This reduces the degree to which the edge of the receiving hole 300A will protrude or sink relative to the inner surface of the bearing 300 after the bearing 300 is deformed. This reduces the obstruction effect of the edges of the multiple receiving holes 300A on the second component 12, thereby reducing the starting resistance of the motor 1 when it starts, and thus reducing the friction noise emitted by the motor 1 when it starts.

[0079] In some embodiments, as shown in FIG6, the substrate 302 has a first mating surface A5, which is adapted to mate with the other of the first component 11 and the second component 12. One end opening of a plurality of receiving holes 300A is located on the first mating surface A5.

[0080] At least a portion of the first solid lubricant A7 is disposed on or exposed on the first mating surface A5.

[0081] With the above configuration, when the other of the first component 11 and the second component 12 moves relative to the bearing 300, the first mating surface A5 can contact the other of the first component 11 and the second component 12, and the first solid lubricant A7 can play a lubricating role to reduce the friction between the other of the first component 11 and the second component 12 and the bearing 300, so as to facilitate the relative movement of the first component 11 and the second component 12.

[0082] In some embodiments, the other of the first component 11 and the second component 12 includes a body and a wear-resistant component. The body has a second mating surface A6 adapted to mate with the bearing 300. At least a portion of the wear-resistant component is disposed on or exposed on the second mating surface A6.

[0083] By providing a wear-resistant component on the second mating surface A6 of the main body, the hardness of the other of the first component 11 and the second component 12 can be increased, thereby improving the wear resistance of the other of the first component 11 and the second component 12 and reducing the wear between the other of the first component 11 and the second component 12 and the bearing 300.

[0084] It should be noted that "at least part of the wear-resistant part is exposed on the second mating surface A6" means that the wear-resistant part can be seen and touched from the second mating surface A6. The mating surface of the wear-resistant part can be flush with, lower than, or higher than the second mating surface A6.

[0085] For example, the material of wear-resistant parts can be hard chromium.

[0086] For example, the wear-resistant part can be a wear-resistant coating provided on the second mating surface A6 of the main body. For example, the wear-resistant part can also be a cylindrical structural part fixed to the second mating surface A6 of the main body. For example, the wear-resistant part can also be a block structure, column structure, cylindrical structure, etc., partially embedded in the main body and partially exposed on the second mating surface A6.

[0087] Based on this, in some embodiments, the first layer receiving hole 300A includes a first receiving hole, the second layer receiving hole 300A includes a second receiving hole, and the projections of the first receiving hole and the second receiving hole on the first end face A3 at least partially overlap. For example, the angle between the axis of two adjacent receiving holes 300A in each layer and the perpendicular line to the axis of the base 302 is α, and the angle between the perpendicular lines of the opposite ends of the receiving holes 300A and the axis of the base 302 is θ, where α < θ.

[0088] With the above configuration, during the relative movement of the first component 11 and the second component 12, since the adjacent two-layer receiving holes 300A overlap at least partially, when the multiple first solid lubricants A7 are squeezed out from the multiple receiving holes 300A, along the circumference of the bearing 300, the projection of the multiple first solid lubricants A7 on the first end face A3 of the substrate 302 can form a continuous annular structure to ensure the lubrication effect of the bearing 300.

[0089] In some embodiments, the first layer of receiving holes includes a first receiving hole, the second layer of receiving holes includes a second receiving hole, and the projections of the first receiving hole and the second receiving hole on the first end face A3 are adjacent, that is, the projection boundaries of the first receiving hole and the second receiving hole on the first end face A3 are adjacent.

[0090] For example, in this case, α = θ.

[0091] With the above configuration, during the relative movement of the first component 11 and the second component 12, when multiple first solid lubricants A7 are squeezed out from multiple receiving holes 300A, along the circumference of the bearing 300, the projection of multiple first solid lubricants A7 on the first end face A3 of the base 302 can also form a continuous annular structure to ensure the lubrication effect of the bearing 300.

[0092] In some embodiments, as shown in FIG5, the axial distance between the center of the first layer receiving hole and the first end face A3 is hx1, where hx1 ≥ 1.5 mm.

[0093] With the above settings, the distance between the multiple receiving holes 300A and the first end face A3 will not be too small. This can ensure the structural strength of the first end face A3 of the bearing 300, thereby reducing the degree of deformation of the bearing 300. This will further reduce the degree to which the edge of the receiving hole 300A will protrude or be recessed relative to the inner surface of the bearing 300 after the bearing 300 is deformed, reduce the obstruction effect of the edges of the multiple receiving holes 300A on the second component 12, and reduce the starting resistance of the motor 1.

[0094] In some embodiments, as shown in FIG5, the axial distance between the center of the m-th layer receiving hole and the second end face A4 is hx2, where hx2 ≥ 1.5 mm.

[0095] With the above settings, the distance between the multiple receiving holes 300A and the second end face A4 will not be too small. This can ensure the structural strength of the second end face A4 of the bearing 300, thereby reducing the degree of deformation of the bearing 300. This will further reduce the degree to which the edge of the receiving hole 300A will protrude or be recessed relative to the inner surface of the bearing 300 after the bearing 300 is deformed, reduce the obstruction effect of the edges of the multiple receiving holes 300A on the second component 12, and reduce the starting resistance of the motor 1.

[0096] In some embodiments, as shown in FIG5, the axial distance between the centers of two adjacent receiving holes 300A is hx, hx≥2r, where r is the radius of the receiving hole.

[0097] With the above configuration, there will be no overlap between two adjacent layers of receiving holes 300A along the axial direction of the substrate. Compared with the partial overlap between two adjacent layers of receiving holes 300A, this can prevent the structural strength of a certain part of the substrate 302 from being too low, thereby further ensuring the structural strength of the substrate 302.

[0098] In some embodiments, the receiving hole 300A is a circular hole, and the radius r of the receiving hole 300A satisfies: r < 1.5b, where b is the wall thickness of the base 302.

[0099] It is understandable that the greater the wall thickness b of the substrate 302, the higher the structural strength of the substrate 302, and the radius r of the receiving hole 300A can also be set to be larger. Conversely, the smaller the wall thickness b of the substrate 302, the lower the structural strength of the substrate 302, and the radius r of the receiving hole 300A needs to be set to be smaller.

[0100] The above settings ensure that the radius r of the receiving hole 300A satisfies the condition: r < 1.5b. This prevents the radius of the receiving hole 300A from being too large, which could affect the structural strength of the substrate 302 and thus guarantee the normal function of the substrate 302.

[0101] Based on this, in some embodiments, the distribution rate of the plurality of receiving holes 300A on the bearing 300 is greater than or equal to 10% and less than or equal to 30%.

[0102] With the above settings, when the distribution rate of multiple receiving holes 300A on the bearing 300 is less than 10%, the contact area between the bearing 300 and the second component 12 is large, which will increase the static friction between the bearing 300 and the second component 12 and increase the starting resistance of the motor 1.

[0103] When the distribution rate of multiple receiving holes 300A on the bearing 300 is greater than 30%, the number of receiving holes 300A is too large. The edges of multiple receiving holes 300A will contact the second component 12, which will also increase the static friction between the bearing 300 and the second component 12. At this time, the structural strength of the bearing 300 is low. After the bearing 300 is deformed, the static friction between the bearing 300 and the second component 12 will be further increased, thereby increasing the starting resistance of the motor 1.

[0104] In this way, by making the distribution rate of multiple receiving holes 300A on the bearing 300 greater than or equal to 10% and less than or equal to 30%, the static friction between the bearing 300 and the second component 12 can be reduced, thereby reducing the starting resistance of the motor 1 and reducing the friction noise emitted when the motor 1 starts.

[0105] In some embodiments, as shown in Figures 4 and 6, at least one bearing 300 includes a first bearing 115, which is fixed to a first assembly 11. The second assembly 12 includes a spindle 121, which is slidably disposed within the first bearing 115.

[0106] By setting the first bearing 115, the friction between the spindle 121 and the first component 11 can be reduced, thereby reducing the friction between the first component 11 and the second component 12.

[0107] Based on this, in some embodiments, 20≤n≤30, and n is an integer.

[0108] For example, the range of n can be determined by simulating the starting force of motor 1.

[0109] First, some setting parameters of the first bearing 115 can be determined, such as the radius r1 of the receiving hole 300A; in some embodiments, r1 = 1.5 mm, the dimension h1 of the first bearing 115 in the first direction; in some embodiments, h1 = 15 mm, the number m1 of receiving holes 300A in each layer; in some embodiments, m1 = 3, the minimum distance h2 between the receiving hole 300A and the first end face A3; in some embodiments, h2 = 1.5 mm, the minimum distance h3 between the receiving hole 300A and the second end face A4; in some embodiments, h3 = 1.5 mm, the radius R1 of the first bearing 115; in some embodiments, R1 = 36 mm, the included angle θ1 between the lines connecting the opposite ends of the receiving hole 300A and the axis of the first bearing 115 along the circumference of the first bearing 115; in some embodiments, θ1 = 4.776°.

[0110] Then, let α1 = θ1, where α1 is the angle between the perpendicular line from the center of one accommodating hole 300A to the axis of the first bearing 115 along the circumference of the first bearing 115, and the perpendicular line from the center of the other accommodating hole 300A to the axis of the first bearing 115. And let the number of accommodating holes 300A in each layer n1 be a variable. Simulate the starting resistance of motor 1 when n1 has different values. The simulation results are shown in Figure 7.

[0111] As can be seen from Figure 7, when the value of n1 is between 20 and 30, the starting resistance of motor 1 is relatively small.

[0112] In this way, compared to the number of accommodating holes 300A in each layer being less than 20 or greater than 30, when the number of accommodating holes 300A in each layer is greater than or equal to 20 and less than or equal to 30, the starting resistance of motor 1 can be reduced, thereby reducing the frictional noise when motor 1 starts.

[0113] Based on this, in some embodiments, 27≤n≤30, and n is an integer.

[0114] For example, in order for multiple first solid lubricants A7 to cover the second component 12 around the circumference of the first bearing 115, it is necessary to ensure that θ1≥α1 and (α1*(m1-1)+θ1)*n1≥360°. Therefore, the number of accommodating holes 300A in each layer can be calculated as n1≥360° / m1*θ1+1. Since n1 is a natural number, the minimum value of n1 can be calculated as 26. In order to avoid the decrease in lubrication area after the first solid lubricant A7 wears down with the use of motor 1, the number of n1 can be greater than or equal to 27.

[0115] In this way, by making the number of receiving holes 300A in each layer greater than or equal to 27 and less than or equal to 30, the starting resistance of the motor 1 can be further reduced, and the lubrication effect of the first bearing 115 on the first component 11 of the shaft core can be guaranteed.

[0116] Based on this, in some embodiments, 4.28°≤α1≤4.776°.

[0117] For example, when the number of accommodating holes 300A in each layer is between 27 and 30, the distribution rate of the multiple accommodating holes 300A on the first bearing 115 can be calculated according to η1=(πr1^2*m1*n1) / (2πR1*h1). At this time, the distribution rate η1 of the multiple accommodating holes 300A on the first bearing 115 is between 16.87% and 18.75%, which satisfies 10%≤η1≤30%.

[0118] Furthermore, by simulating the wear of the first bearing 115 when n1 has different values, as shown in Figure 8, it can be seen from Figure 8 that the distribution rate η1 of the multiple accommodating holes 300A is large, and the wear of bearing 300 is higher. Therefore, n1 = 27 can be taken as the preferred solution. The range of α1 is calculated, and it can be found that 4.28°≤α1≤4.776°.

[0119] In this way, by making 4.28°≤α1≤4.776°, the starting resistance of the motor 1 can be reduced by bearing 300, and the lubrication effect of the first bearing 115 on the first component 11 of the shaft core can be guaranteed. At the same time, the wear of the first bearing 115 can be reduced, thereby improving the service life of bearing 300.

[0120] Based on this, in some embodiments, as shown in Figures 4 and 9, the first component 11 further includes a guide member 114. The spindle 121 is provided with a guide hole 121A. The guide hole 121A extends along the axial direction of the spindle 121, and the guide member 114 is accommodated within the guide hole 121A. When the first component 11 moves relative to the second component 12, the guide member 114 moves within the guide hole 121A.

[0121] During the relative movement of the spindle 121 and the housing, the guide 114 moves within the guide hole 121A to guide the spindle 121 and the housing through the cooperation between the guide 114 and the spindle 121, thereby improving the stability and smoothness of the relative movement between the spindle 121 and the housing.

[0122] For example, the guide member 114 can be a rod-shaped structure, a plate-shaped structure, an irregular structure, etc., which will not be elaborated here.

[0123] In some embodiments, at least one bearing 300 further includes a second bearing 124. The second bearing 124 is disposed within a guide hole 121A and connected to the spindle 121. A guide member 114 is slidably disposed within the second bearing 124. The guide member 114 and the second bearing 124 are slidably relative to each other along the axial direction of the spindle 121.

[0124] By setting the second bearing 124, the friction between the guide 114 and the spindle 121 can be reduced, thereby reducing the friction between the first component 11 and the second component 12.

[0125] Based on this, in some embodiments, along the first direction, the number of accommodating holes 300A on each layer of the second bearing 124 is greater than or equal to 10 and less than or equal to 20.

[0126] For example, the range of the number of accommodating holes 300A in each layer can be determined by simulating the starting force of motor 1.

[0127] First, some setting parameters of the second bearing 124 can be determined, such as the radius r2 of the receiving hole 300A, which in some embodiments is r2 = 1.5 mm; the dimension h4 of the second bearing 124 in the first direction, which in some embodiments is h4 = 30 mm; the number of layers m2, which in some embodiments is m2 = 5; the minimum distance h5 between the receiving hole 300A and the first end face A3, which in some embodiments is h5 = 2.5 mm; the minimum distance h6 between the receiving hole 300A and the second end face A4, which in some embodiments is h6 = 2.5 mm; the radius R2 of the second bearing 124, which in some embodiments is R2 = 14 mm; and the angle θ2 between the lines connecting the opposite ends of the receiving hole 300A and the axis of the second bearing 124 along the circumference of the second bearing 124, which in some embodiments is θ2 = 12.3°.

[0128] Then, let α2 = θ2, where α2 is the angle between the center of one accommodating hole 300A and the perpendicular line from the center of the other accommodating hole 300A to the perpendicular line from the center of the other accommodating hole 300A to the perpendicular line from the second bearing 124, and the included angle between them. Let the number of accommodating holes 300A in each layer n1 be a variable. Simulate the starting resistance of motor 1 when n1 has different values. The simulation results are shown in Figure 10.

[0129] As can be seen from Figure 10, when the value of n2 is between 10 and 20, the starting resistance of motor 1 is relatively small.

[0130] In this way, compared to the number of accommodating holes 300A in each layer being less than 10 or greater than 20, when the number of accommodating holes 300A in each layer is greater than or equal to 10 and less than or equal to 20, the starting resistance of motor 1 can be reduced, thereby reducing the frictional noise when motor 1 starts.

[0131] Based on this, in some embodiments, the number of accommodating holes 300A in each layer is greater than or equal to 10 and less than or equal to 14.

[0132] As can be seen from Figure 10, when n2 is between 10 and 14, compared to n2 being greater than 14 and less than or equal to 20, the starting resistance of motor 1 is smaller. Thus, by making the number of accommodating holes 300A in each layer between 10 and 14, the starting resistance of motor 1 can be further reduced, thereby further reducing the frictional noise when motor 1 starts.

[0133] In some embodiments, in order for a plurality of first solid lubricants A7 to cover the second component 12 around the circumference of the second bearing 124, it is necessary to ensure that θ2≥α2 and (α2*(m2-1)+θ2)*n2≥360°. Therefore, the number of accommodating holes 300A in each layer can be calculated as n2≥360° / m2*θ2+1. Since n2 is a natural number, the minimum value of n2 can be calculated as 6. In order to avoid the decrease in lubrication area after the first solid lubricants A7 wear down with the use of the motor 1, the number of n2 can be greater than or equal to 10.

[0134] In this way, by making the number of each layer of receiving holes 300A greater than or equal to 10 and less than or equal to 14, the starting resistance of the motor 1 can be further reduced, and the lubrication effect of the second bearing 124 on the first component 11 of the shaft core can be guaranteed.

[0135] Based on this, in some embodiments, 5.925°≤α1≤12.3°.

[0136] For example, when the number of accommodating holes 300A in each layer is between 10 and 14, the distribution rate of the multiple accommodating holes 300A on the second bearing 124 can be calculated according to η2=(πr2^2*m2*n2) / (2πR2*h2). At this time, the distribution rate η2 of the multiple accommodating holes 300A on the second bearing 124 is between 13.4% and 18.78%, which satisfies 10%≤η2≤30%.

[0137] Furthermore, by simulating the wear of the second bearing 124 when n2 has different values, as shown in Figure 7, it can be seen from Figure 7 that the larger the distribution rate η2 of the multiple accommodating holes 300A, the higher the wear of the bearing 300. Therefore, n2 = 10 can be taken as the preferred option. The range of α2 can be calculated, and it can be found that 13.4° ≤ α1 ≤ 18.78°.

[0138] In this way, by making 13.4°≤α1≤18.78°, the starting resistance between bearing 300 and motor 1 can be reduced, and the lubrication effect of the second bearing 124 on the first component 11 of the shaft core can be guaranteed. At the same time, the wear of the second bearing 124 can be reduced, thereby improving the service life of bearing 300.

[0139] In some embodiments, the number of accommodating holes in each layer is n, a≤n≤1.5a, a=[2.75(Rr)(hx1-r)(hx2-r) / rm(hx-2r+1)]+1, where n is an integer, R is the inner diameter of the substrate, and r is the radius of the accommodating hole. The number n of 300A accommodating holes in each layer can also be determined in the same way.

[0140] 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 motor (1) applied to a vehicle suspension, said motor (1) comprising a first component (11) and a second component (12), the first component (11) and the second component (12) being movable relative to each other, wherein, A first bearing (115) is provided between the first component (11) and the second component (12), the first bearing (115) comprising: A substrate (302), said substrate (302) being cylindrical, said substrate (302) having a first end face (A3); and A plurality of first solid lubricants (A7) are disposed on the substrate (302), and the projection of the plurality of first solid lubricants (A7) onto the first end face (A3) of the substrate (302) forms a continuous annular structure.

2. The motor (1) according to claim 1, wherein, The substrate (302) has m layers of receiving holes (300A) along the axial direction. The receiving holes (300A) are configured to install the first solid lubricant (A7). The substrate (302) also includes a second end face (A4) opposite to the first end face (A3). In the direction from the first end face (A3) to the second end face (A4), the m layers of receiving holes (300A) are respectively denoted as the first layer of receiving holes (300A), ..., the mth layer of receiving holes (300A). Adjacent layers of receiving holes (300A) are staggered in the circumferential direction, and m is an integer ≥2.

3. The motor (1) according to claim 2, wherein, The axial distance between the center of the first layer receiving hole (300A) and the first end face (A3) is hx1, and the axial distance between the center of the m layer receiving hole (300A) and the second end face (A4) is hx2. Wherein, hx1 and hx2 satisfy at least one of the following: hx1≥1.5mm, or hx2≥1.5mm.

4. The motor (1) according to claim 2 or 3, wherein, The axial distance between the centers of two adjacent receiving holes (300A) in the m-th receiving hole (300A) is hx, hx≥2r, where r is the radius of the receiving hole (300A).

5. The motor (1) according to any one of claims 2-4, wherein, The first layer receiving hole (300A) includes a first receiving hole, and the second layer receiving hole (300A) includes a second receiving hole. The projections of the first receiving hole and the second receiving hole on the first end face (A3) at least partially overlap.

6. The motor (1) according to any one of claims 2-5, wherein, The first layer receiving hole (300A) includes a first receiving hole, and the second layer receiving hole (300A) includes a second receiving hole, wherein the first receiving hole and the second receiving hole satisfy one of the following: The projections of the first receiving hole and the second receiving hole on the first end face (A3) are adjacent; or, The projected boundaries of the first receiving hole and the second receiving hole on the first end face (A3) are adjacent.

7. The motor (1) according to any one of claims 2-6, wherein, The distribution rate of the plurality of receiving holes (300A) on the first bearing (115) is greater than or equal to 10% and less than or equal to 30%.

8. The motor (1) according to any one of claims 3-7, wherein, The number of accommodating holes (300A) in each of the m layers of accommodating holes (300A) is n, where a≤n≤1.5a, where a=[2.75(Rr)(hx1-r)(hx2-r) / rm(hx-2r+1)]+1, n is an integer, R is the inner diameter of the substrate (302), and r is the radius of the accommodating hole (300A).

9. The motor (1) according to any one of claims 2-8, wherein, The radius r of the accommodating hole (300A) satisfies: r < 1.5b, where b is the wall thickness of the substrate (302).

10. The motor (1) according to any one of claims 2-9, wherein, The substrate (302) has a first mating surface (A5) adapted to mate with one of the first component (11) and the second component (12); one end opening of the plurality of receiving holes (300A) is located on the first mating surface (A5); The first solid lubricant (A7) satisfies one of the following: At least a portion of the first solid lubricant (A7) is disposed on the first mating surface (A5); or, At least a portion of the first solid lubricant (A7) is exposed on the first mating surface (A5).

11. The motor (1) according to any one of claims 1-10, wherein, One of the first component (11) and the second component (12) includes a main body and a wear-resistant component; The main body has a second mating surface (A6), which is adapted to mate with the first bearing (115); The wear-resistant component satisfies one of the following: At least a portion of the wear-resistant component is disposed on the second mating surface (A6); or, At least a portion of the wear-resistant component is exposed on the second mating surface (A6).

12. The motor (1) according to any one of claims 1-11, wherein, The first bearing (115) is fixed to the first component (11), and the second component (12) includes a mandrel (121) which is slidably inserted into the first bearing (115).

13. The motor (1) according to any one of claims 2-12, wherein, The number of accommodating holes (300A) in each layer of the first bearing (115) is n, where 20≤n≤30, and n is an integer.

14. The motor (1) according to any one of claims 2-13, wherein, The number of each layer of receiving holes (300A) in the first bearing (115) is n, where 27≤n≤30, and n is an integer.

15. The motor (1) according to any one of claims 1-14, wherein, The first component (11) further includes a guide (114); the spindle (121) is provided with a guide hole (121A), and the guide (114) is housed in the guide hole (121A). When the first component (11) moves relative to the second component (12), the guide (114) moves in the guide hole (121A).

16. The motor (1) according to claim 15 further includes a second bearing (124), the second bearing (124) being disposed in the guide hole (121A) and connected to the spindle (121), and the guide member (114) being slidably disposed in the second bearing (124).

17. The motor (1) according to claim 16, wherein, The number of accommodating holes (300A) on each layer of the second bearing (124) is greater than or equal to 10 and less than or equal to 20.

18. A suspension assembly (30), wherein, include: The motor (1) according to any one of claims 1-17; A tower top assembly (2), wherein the tower top assembly (2) is disposed in one of the first assembly (11) and the second assembly (12) of the motor (1), and the tower top assembly (2) is adapted to connect to the vehicle body; and A spring (3) is disposed between the first component (11) and the second component (12) and the tower top component (2), and the other of the first component (11) and the second component (12) is adapted to connect a wheel (20).

19. A vehicle (100) that satisfies one of the following: The vehicle (100) includes: The motor (1) according to any one of claims 1-17; or, The vehicle (100) includes a suspension assembly (30) according to claim 18.

20. A bearing (300), comprising: The substrate (302) is cylindrical and has a first end face (A3); and A plurality of first solid lubricants (A7) are disposed on the substrate (302), and the projection of the plurality of first solid lubricants (A7) onto the first end face (A3) of the substrate (302) forms a continuous annular structure.

21. The bearing (300) according to claim 20, wherein, The substrate (302) is provided with m layers of receiving holes (300A) along the axial direction. The receiving holes (300A) are configured to install the first solid lubricant (A7). The substrate (302) also includes a second end face (A4) opposite to the first end face (A3). From the first end face (A3) to the second end face (A4), the m layers of receiving holes (300A) are respectively denoted as the first layer of receiving holes (300A), ..., the mth layer of receiving holes (300A). Among them, two adjacent layers of receiving holes (300A) in the m layers of receiving holes (300A) are staggered along the circumference of the substrate (302), and m is an integer ≥2.

22. The bearing (300) according to claim 21, wherein, The number of accommodating holes (300A) in each of the m layers of accommodating holes (300A) is n, where a≤n≤1.5a, where a=[2.75(Rr)(hx1-r)(hx2-r) / rm(hx-2r+1)]+1, n is an integer, R is the inner diameter of the substrate (302), and r is the radius of the accommodating hole (300A).

23. The bearing (300) according to claim 22, wherein, The radius r of the accommodating hole (300A) satisfies: r < 1.5b, where b is the wall thickness of the substrate (302).

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