Actuator, suspension and vehicle

Abstract

The utility model discloses an actuator, a suspension and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of how to prevent external impurities from entering the actuator to influence the reliability of the suspension. The actuator comprises a first assembly and a second assembly which can move relatively in the axial direction of the actuator. The first assembly comprises a shell, the second assembly comprises a center piece, and the center piece and the shell can move relatively in the axial direction of the actuator. The actuator further comprises a sealing support and a sealing assembly. The sealing support is arranged on the shell. A sealing assembly is arranged between the sealing support and the center piece and used for achieving sealing between the sealing support and the center piece.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to an actuator, a suspension and a vehicle. Background Art

[0002] The actuator is the main component of the suspension. It usually includes a housing, a center rod and a drive assembly. The center rod extends into the housing. The drive assembly can drive the center rod and the housing to slide relative to each other to adjust the suspension's buffering performance, thereby reducing the vibration of the vehicle body and improving the vehicle's comfort and handling performance.

[0003] However, since the suspension is exposed to the external environment, during the driving of the vehicle, external impurities such as dust, water, and oil will adhere to the suspension and enter the connection between the center rod and the shell, thereby affecting the relative sliding of the center rod and the shell, which will affect the reliability of the suspension. Utility Model Content

[0004] The purpose of the utility model is to provide an actuator, a suspension and a vehicle, aiming to solve the problem of how to prevent foreign matter from entering the actuator and affecting the reliability of the suspension.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, the utility model provides an actuator, comprising a first component and a second component which can move relative to each other along the axial direction of the actuator; the first component comprises a shell, the second component comprises a center piece, and the center piece and the shell can move relative to each other along the axial direction of the actuator; the actuator also comprises a sealing bracket and a sealing assembly, and the sealing bracket is arranged on the shell; a sealing assembly is arranged between the sealing bracket and the center piece, and the sealing assembly is used to achieve sealing between the shell and the center piece.

[0007] The actuator provided in the embodiments of the present application utilizes a sealing bracket mounted on the housing, a sealing assembly disposed between the sealing bracket and the centerpiece, and the sealing assembly seals the gap between the housing and the centerpiece. This sealing action of the sealing assembly prevents foreign matter from entering the mounting hole in the top wall, thereby preventing foreign matter from affecting the relative motion between the centerpiece and the housing, thereby improving the reliability of the suspension.

[0008] In some embodiments, the sealing bracket is disposed on the outside of the housing and is detachably connected to the top wall of the housing.

[0009] In some embodiments, a portion of the sealing assembly is disposed between the top wall and the sealing bracket, and the sealing assembly surrounds and contacts the center piece. This allows the sealing assembly to seal both the gap between the sealing bracket and the center piece and the gap between the sealing bracket and the top wall, thereby further improving the sealing effect and the reliability of the suspension.

[0010] In some embodiments, the sealing assembly includes a sealing member, which includes an annular sealing portion and a support portion. The inner circumference of the annular sealing portion contacts the center member. The support portion is connected to the outer circumference of the annular sealing portion and is disposed around the annular sealing portion. The support portion is disposed between the top wall and the sealing bracket. The arrangement of the annular sealing portion and the support portion facilitates securing the sealing member via the sealing bracket.

[0011] In some embodiments, when the annular sealing portion is in a free state, the distance between the inner circumferential surface of the annular sealing portion and the axis of the annular sealing portion first increases and then decreases along the axial direction of the annular sealing portion. This allows the annular sealing portion to deform more easily when it abuts the center piece, thereby allowing the annular sealing portion to fit more closely with the center piece and improving the sealing effect of the annular sealing portion.

[0012] In some embodiments, the annular sealing portion has two axial ends, a first sealing end and a second sealing end; the support portion is located axially between the first and second sealing ends of the annular sealing portion. This enhances the structural strength of the seal, and when the center piece and the seal slide relative to each other, portions of the annular sealing portion on both axial sides of the support portion rub against the center piece, thereby reducing significant axial movement of the annular sealing portion and improving the sealing effect.

[0013] In some embodiments, the sealing assembly further includes a pressing piece disposed between the support portion and the top wall.

[0014] In some embodiments, the press disc is disposed around the annular seal.

[0015] In some embodiments, the sealing bracket includes a main body and a connecting portion. The main body is located on the side of the support portion facing away from the top wall. The connecting portion is connected to the main body and disposed around the support portion, and is connected to the housing. In this way, the connecting portion can shield the support portion, and the sealing bracket can shield the sealing element, thereby protecting the sealing element from leakage and damage.

[0016] In some embodiments, a mounting hole is provided on the top wall, and the mounting hole is communicated with the internal space of the shell; the center piece is passed through the mounting hole, and a portion of the center piece is located inside the shell.

[0017] In some embodiments, the actuator further includes a first sliding bearing disposed within the mounting hole and having an interference fit with the top wall; the centerpiece is disposed within the first sliding bearing and is slidably connected to the first sliding bearing. The first sliding bearing can improve the smoothness of relative movement between the centerpiece and the housing.

[0018] In some embodiments, a limiting boss is provided on the inner wall of the housing, located on a side of the first sliding bearing facing away from the seal assembly, to limit the position of the first sliding bearing. The limiting boss can restrict the first sliding bearing from sliding relative to the housing along the housing's axial direction away from the top cover, thereby improving the stability of the first sliding bearing within the mounting hole.

[0019] In some embodiments, the limiting boss surrounds the axis of the housing.

[0020] In some embodiments, the equivalent inner diameter of the limiting boss is larger than the equivalent inner diameter of the first sliding bearing. This prevents the center piece from contacting the limiting boss when the center piece and the first sliding bearing slide relative to each other, thereby preventing the limiting boss from affecting the relative sliding of the center piece and the first sliding bearing, and preventing the limiting boss from causing wear on the center piece.

[0021] In some embodiments, the distance between the inner circumferential surface of the limiting boss and the outer circumferential surface of the first sliding bearing is greater than half the radial thickness of the first sliding bearing. This ensures a sufficient contact area between the limiting boss and the first sliding bearing, thereby enhancing the limiting effect of the limiting boss on the first sliding bearing.

[0022] In some embodiments, a retaining groove is formed on the inner wall surface of the housing; the actuator further includes a retaining ring, which is engaged in the retaining groove and is located between the first sliding bearing and the sealing assembly to limit the position of the first sliding bearing. The retaining ring can limit the first sliding bearing from sliding relative to the housing along the axial direction of the housing toward the top cover, thereby improving the stability of the first sliding bearing within the mounting hole.

[0023] In some embodiments, the equivalent inner diameter of the retaining ring is larger than the equivalent inner diameter of the first sliding bearing. This prevents contact between the center piece and the retaining ring when the center piece and the first sliding bearing slide relative to each other, thereby preventing the retaining ring from affecting the relative sliding of the center piece and the first sliding bearing, and preventing the retaining ring from causing wear on the center piece.

[0024] In some embodiments, the distance between the inner circumference of the retaining ring and the outer circumference of the first sliding bearing is greater than half the radial thickness of the first sliding bearing. This ensures a sufficient contact area between the retaining ring and the first sliding bearing, thereby improving the retaining effect of the retaining ring on the first sliding bearing.

[0025] In some embodiments, the snap ring is provided with an elastic notch, and portions of the snap ring on either side of the elastic notch are provided with a first engaging notch and a second engaging notch, respectively. This allows the snap ring to be easily squeezed with an external tool to deform the snap ring, thereby facilitating engagement of the snap ring with the slot.

[0026] In some embodiments, the first engaging notch includes a first end and a second end that are opposite, the first end extending through the snap ring and the second end being closer to the second engaging notch than the first end; the second engaging notch includes a third end and a fourth end that are opposite, the third end extending through the snap ring and the fourth end being closer to the first engaging notch than the third end. Thus, after an external tool is engaged with the first and second engaging notches, the first and second engaging notches can retain the external tool, preventing it from falling out of the first and second engaging notches, thereby improving stability when squeezing the snap ring.

[0027] In some embodiments, the main body has a mounting notch. The actuator further includes a sensor head and a magnetic scale. The magnetic scale is connected to the center piece, and the sensor head is disposed within the mounting notch and connected to the main body. The sensor head is configured to detect changes in the magnetic field strength of the magnetic scale. By installing the sensor head within the mounting notch, the arrangement of the sensor head and the sealing bracket can be more rationalized, avoiding excessive space occupation.

[0028] In some embodiments, the sealing bracket has a first wire slot, and the housing has a second wire slot, the first wire slot communicating with the second wire slot. The actuator further includes a sensor cable connected to the sensor reader and disposed in the first and second wire slots. The first and second wire slots allow the cable to be stored, thereby preventing the cable from becoming too scattered and making replacement and maintenance inconvenient.

[0029] In some embodiments, the actuator further includes a drive assembly, which is disposed between a portion of the center piece within the housing and the housing, and is configured to drive the housing to move axially relative to the center piece along the housing.

[0030] In some embodiments, the drive component includes an electromagnetic coil and a magnetic member, one of the electromagnetic coil and the magnetic member is connected to the shell and forms a first component together with the shell, and the other of the electromagnetic coil and the magnetic member is connected to the center member and forms a second component together with the center member.

[0031] A second aspect of the present invention provides a suspension comprising an actuator, a fork arm, a top cover and an elastic element, wherein the fork arm is connected to a housing; the top cover is connected to a center piece; and the elastic element is disposed between the housing and the top cover.

[0032] According to a third aspect of the present invention, a vehicle is provided, comprising a suspension, a body and wheels, wherein the body is connected to one of a fork arm and a roof; and the wheels are arranged below the body and connected to the other of the fork arm and the roof.

[0033] It should be noted that the technical effects brought about by the implementation of the second aspect to the third aspect can refer to the technical effects brought about by the corresponding implementation of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 This is a schematic structural diagram of a vehicle in an embodiment of the present application;

[0036] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the suspension in the vehicle shown;

[0037] Figure 3 for Figure 2 A schematic diagram of a portion of the suspension structure shown;

[0038] Figure 4 for Figure 2 A front structural view of the suspension shown;

[0039] Figure 5 for Figure 4 Schematic diagram of the EE cross-section structure;

[0040] Figure 6 for Figure 5 A schematic diagram of the structure at center A;

[0041] Figure 7 for Figure 2 A schematic diagram of a portion of the structure of the actuator in the suspension shown;

[0042] Figure 8 for Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0043] Figure 9 It is a front view schematic diagram of a partial structure of the actuator;

[0044] Figure 10 for Figure 9 Schematic diagram of the FF cross-section structure;

[0045] Figure 11 for Figure 10 A magnified schematic diagram of the structure at point C in the middle;

[0046] Figure 12 for Figure 9 Schematic diagram of the structure of the retaining ring of the actuator;

[0047] Figure 13 This is a schematic diagram of the three-dimensional structure of the sealing member in the embodiment of the present application;

[0048] Figure 14 for Figure 13 A schematic front view of the middle seal;

[0049] Figure 15 for Figure 14 Schematic diagram of the MM cross-section structure;

[0050] Figure 16 This is a schematic diagram of the three-dimensional structure of the sealing bracket in the embodiment of the present application;

[0051] Figure 17 This is one of the schematic diagrams of the positional relationship between the sealing bracket and the sealing member in the embodiment of the present application;

[0052] Figure 18 This is the second schematic diagram of the positional relationship between the sealing bracket and the sealing member in the embodiment of the present application;

[0053] Figure 19 for Figure 16 a front view schematic diagram of the middle sealing bracket;

[0054] Figure 20 for Figure 19 Schematic diagram of the cross-section structure of the middle NN;

[0055] Figure 21 for Figure 3 Enlarged schematic diagram of the structure at point D in the middle.

[0056] Reference numerals:

[0057] 1000. Vehicle;

[0058] 1. Car body;

[0059] 2. Wheels;

[0060] 3. Suspension; 31. Actuator; 311. Center piece; 312. Housing; 3121. Limiting portion; 3122. Top wall; 3122A. Mounting hole; 3123. Bottom wall; 3124. Peripheral wall plate; 3125. Limiting boss; 3126. Slot; 3127. Second wire slot; 313. Drive assembly; 3131. Electromagnetic coil; 3132. Magnetic member; 314. Iron core; 315. First sliding bearing; 316. Snap ring; 3161. Elastic notch; 3162. First snap-fit ​​notch; 3162A. First end; 3162B. Second end; 3163, second engaging notch; 3163A, third end; 3163B, fourth end; 317, sealing bracket; 3171, avoidance through-hole; 3172, main body; 3173, connecting portion; 3174, mounting notch; 3175, first wire slot; 31A, sealing assembly; 318, sealing member; 3181, annular sealing portion; 3181A, first sealing end; 3181B, second sealing end; 3182, supporting portion; 318A, pressing piece; 319, position sensor; 3191, sensor reader; 3192, magnetic scale;

[0061] 32. Fork arm;

[0062] 33. Top cover;

[0063] 34. Elastic element;

[0064] 35. Support parts. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0066] 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 the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0067] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "communicated" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be directly connected, indirectly connected through an intermediary, or internally connected between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0068] In the embodiments of the present invention, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, article, or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, article, or device comprising the element.

[0069] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0070] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0071] The present application provides a vehicle 1000. The vehicle 1000 may be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, an extended-range electric vehicle, a fuel vehicle, etc. The vehicle 1000 may also be a car, a van, a bus, a truck, a trailer, etc.

[0072] like Figure 1 As shown, Figure 1 FIG1 is a schematic diagram of the structure of a vehicle 1000 according to an embodiment of the present application. Vehicle 1000 includes a body 1 and wheels 2. Body 1 is used for seating passengers and carrying objects. Wheels 2 are mounted below body 1 to support body 1 and are capable of rolling on the road to enable vehicle 1000 to travel.

[0073] The vehicle 1000 further includes a suspension 3. The suspension 3 is provided between the vehicle body 1 and the wheels 2 and is used to transmit force and torque between the vehicle body 1 and the wheels 2, and to cushion the impact force on the vehicle body 1 during the driving process of the vehicle 1000, thereby improving riding or driving comfort.

[0074] The suspension 3 may be a non-independent suspension 3 , an independent suspension 3 or an active suspension 3 .

[0075] In some embodiments of the present application, the suspension 3 is an active suspension 3, and the stiffness and damping characteristics of the active suspension 3 can be dynamically and adaptively adjusted according to the driving conditions of the vehicle 1000 (such as the motion state of the vehicle 1000 and the condition of the road, etc.), so that the suspension 3 system is always in the best vibration reduction state. Specifically, Figure 2 As shown, Figure 2 for Figure 1 The figure shows a schematic perspective view of the suspension 3 in vehicle 1000. The suspension 3 may include an actuator 31, a fork arm 32, and a top cover 33. The fork arm 32 and the top cover 33 are connected to opposite ends of the actuator 31. The actuator 31 is used to drive the fork arm 32 and the top cover 33 to move away from or toward each other to adjust the relative displacement between the top cover 33 and the fork arm 32.

[0076] One of the fork arm 32 and the top cover 33 is connected to the vehicle body 1, and the other of the fork arm 32 and the top cover 33 is connected to the wheel 2. That is, when the fork arm 32 is connected to the vehicle body 1, the top cover 33 is connected to the wheel 2; when the fork arm 32 is connected to the wheel 2, the top cover 33 is connected to the vehicle body 1.

[0077] In this way, by adjusting the relative displacement between the top cover 33 and the fork arm 32 via the actuator 31, the relative displacement between the vehicle body 1 and the wheel 2 can be adjusted. Thus, when encountering rough roads or turning, the actuator 31 can be used to adjust the distance between the vehicle body 1 and the wheel 2 to maintain the balance of the vehicle body 1 and improve the driving comfort of the vehicle 1000.

[0078] like Figure 2 As shown, the suspension 3 further includes an elastic element 34. The elastic element 34 is connected between the actuator 31 and the top cover 33. When the actuator 31 adjusts the relative displacement between the top cover 33 and the fork arm 32, the elastic element 34 expands and contracts with the relative movement of the top cover 33 and the fork arm 32, thereby adjusting the cushioning performance of the elastic element 34 so that the cushioning performance of the elastic element 34 meets the cushioning requirements of the vehicle 1000, thereby further improving the driving comfort of the vehicle 1000.

[0079] Specifically, in some embodiments, Figure 3 As shown, Figure 3 for Figure 2 The schematic diagram of a partial structure of a suspension 3 shows an actuator 31 comprising a first component and a second component that can move relative to each other along the actuator's axial direction. In some examples, the first component can be a mover component, and the second component can be a stator component. In other examples, the first component can be a stator component, and the second component can be a mover component.

[0080] The first component includes a housing 312. The second component includes a center piece 311. The center piece 311 and the housing 312 can move relative to each other along the axial direction of the actuator. The axial direction of the actuator is consistent with the axial direction of the housing 312.

[0081] like Figure 4 and Figure 5 As shown, Figure 4 for Figure 2 The front view of the suspension 3 is shown. Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along section EE. A portion of the center piece 311 is located within the housing 312 and is capable of sliding relative to the housing 312 along the axial direction of the housing 312. The center piece 311 may be a rod-shaped structure, a plate-shaped structure, or other irregular structure, which is not specifically limited herein.

[0082] like Figure 2 and Figure 3 As shown, the top cover 33 is connected to the center piece 311. Specifically, the top cover 33 is connected to the portion of the center piece 311 located outside the housing 312. The top cover 33 and the center piece 311 can be connected by welding, clamping, screwing, etc., or by other components, which are not specifically limited here.

[0083] The fork arm 32 is connected to the housing 312. Specifically, the fork arm 32 is connected to the end of the housing 312 facing away from the top cover 33. The fork arm 32 and the housing 312 can be connected by welding, clamping, screwing, etc., or by other components, which are not specifically limited here.

[0084] The relative sliding of the housing 312 and the center piece 311 can drive the top cover 33 and the fork arm 32 to move relative to each other, thereby adjusting the relative displacement between the top cover 33 and the fork arm 32 and further adjusting the distance between the vehicle body and the wheel 2 .

[0085] The elastic element 34 is disposed between the housing 312 and the top cover 33. Specifically, the elastic element 34 abuts against the housing 312 and the top cover 33, respectively. That is, the elastic element 34 is in a compressed state when clamped by the housing 312 and the top cover 33. The elastic element 34 may or may not be connected to the housing 312 and the top cover 33.

[0086] When the shell 312 and the center piece 311 slide relative to each other, the shell 312 and the top cover 33 also move relative to each other, thereby driving the elastic element 34 to expand and contract, so as to adjust the buffering performance of the elastic element 34 .

[0087] In some examples, such as Figure 3As shown, the outer peripheral wall surface of the housing 312 has a limiting portion 3121. Exemplarily, the limiting portion 3121 can be a supporting step or a plurality of supporting protrusions spaced apart along the circumference of the housing 312.

[0088] like Figure 2 As shown, the suspension 3 further includes a support member 35. The support member 35 is located on the side of the top cover 33 facing the housing 312 and is connected to the top cover 33. Specifically, the support member 35 can abut against the top cover 33, or can be connected to the top cover 33 by means of a snap connection, a screw connection, etc. Exemplarily, the support member 35 is annular, and the center member 311 is disposed inside the support member 35.

[0089] The elastic element 34 is disposed between the support member 35 and the limiting portion 3121. Specifically, the elastic element 34 abuts against the support member 35 and the limiting portion 3121, respectively. Exemplarily, the elastic element 34 may be a cylindrical elastic element made of an elastic material such as rubber or latex. In this case, the elastic element 34 may be sleeved on the outside of the housing 312. The elastic element 34 may also include a plurality of elastic columns made of an elastic material such as rubber or latex. In this case, the plurality of elastic columns are spaced apart along the circumference of the housing 312. Exemplarily, the elastic element 34 may be a spring sleeved on the outside of the housing 312.

[0090] The specific structure of the actuator 31 will be described in detail below.

[0091] In some embodiments, as Figure 5 As shown, in order to facilitate relative sliding between the housing 312 and the center piece 311, the actuator 31 further includes a drive assembly 313. The drive assembly 313 is disposed between the center piece 311 and the housing 312 in the housing 312, and is used to drive the housing 312 to move axially relative to the center piece 311 along the housing 312.

[0092] In some examples, the driver component 313 may be a piezoelectric ceramic driver.

[0093] In other examples, such as Figure 6 As shown, Figure 6 for Figure 5In the enlarged schematic diagram of the structure at point A, the drive assembly 313 includes an electromagnetic coil 3131 and a magnetic member 3132. One of the electromagnetic coil 3131 and the magnetic member 3132 is connected to the housing 312, and the other is connected to the center member 311. That is, when the electromagnetic coil 3131 is connected to the housing 312, the magnetic member 3132 is connected to the center member 311. In this case, the electromagnetic coil 3131 and the housing 312 form a first assembly, and the magnetic member 3132 and the center member 311 form a second assembly. When the electromagnetic coil 3131 is connected to the center member 311, the magnetic member 3132 is connected to the housing 312. In this case, the electromagnetic coil 3131 and the center member 311 form a second assembly, and the magnetic member 3132 and the housing 312 form a first assembly.

[0094] Here, the electromagnetic coil 3131 is connected to the center piece 311, and the magnetic member 3132 is connected to the housing 312. Specifically, the center piece 311 is a rod-shaped structure, and an annular iron core 314 is disposed on the outer circumference of the center piece 311. The iron core 314 is inserted into the iron core 314 and is fixedly connected to the iron core 314. The outer circumference of the iron core 314 is provided with a coil slot, and the electromagnetic coil 3131 is disposed in the coil slot and is wound around the iron core 314 along the circumference of the iron core 314.

[0095] Magnetic member 3132 is fixed to the inner wall surface of housing 312. Thus, when electromagnetic coil 3131 is energized, a magnetic field is generated between electromagnetic coil 3131 and magnetic member 3132, and the direction of the Lorentz force of this magnetic field is along the axial direction of housing 312. This generates an interaction force along the axial direction of housing 312 between center member 311 and housing 312, thereby pushing center member 311 and housing 312 to move relative to each other along the axial direction of housing 312. Furthermore, the direction of the interaction force between center member 311 and housing 312 can be controlled by changing the direction of the current flowing in electromagnetic coil 3131.

[0096] Exemplarily, the magnetic component 3132 may be a permanent magnet, an electromagnet, an energized coil, or the like.

[0097] For example, the magnetic member 3132 is an annular structure. At this time, the center member 311, the iron core 314 and the electromagnetic coil 3131 are all inserted into the magnetic member 3132.

[0098] In some embodiments, there are multiple electromagnetic coils 3131 , which are spaced apart along the axial direction of the housing 312 . There are also multiple magnetic members 3132 , which are spaced apart along the axial direction of the housing 312 .

[0099] It should be noted that the electromagnetic coil 3131 and the iron core 314 are a whole, and there is a gap between the outer peripheral surface of the whole and the inner peripheral surface of the magnetic part 3132, wherein the gap between the outer peripheral surface of the whole and the inner peripheral surface of the magnetic part 3132 can be greater than or equal to 0.5 mm and less than or equal to 1 mm.

[0100] In some embodiments, as Figure 7 As shown, Figure 7 for Figure 2 The schematic diagram of a portion of the actuator 31 in the suspension 3 shows the housing 312, which includes a top wall 3122, a bottom wall 3123, and a peripheral wall plate 3124. The top wall 3122 and the bottom wall 3123 are spaced apart, with the thickness of the top wall 3122 and the thickness of the bottom wall 3123 aligned. The peripheral wall plate 3124 is cylindrical and disposed between the top wall 3122 and the bottom wall 3123. The top wall 3122, the bottom wall 3123, and the peripheral wall plate 3124 define the interior space of the housing 312.

[0101] In order to facilitate the center piece 311 to be located in the housing 312 and slide relative to the housing 312, as shown in FIG. Figure 7 As shown, the top wall 3122 is provided with a mounting hole 3122A. The mounting hole 3122A communicates with the interior space of the housing 312. The center piece 311 is inserted into the mounting hole 3122A, and a portion of the center piece 311 is located within the housing 312. This allows the center piece 311 to extend into the interior space of the housing 312 through the mounting hole 3122A, thereby allowing a portion of the center piece 311 to be located within the housing 312.

[0102] In some examples, the center piece 311 is slidably connected to the mounting hole 3122A. In this way, when the center piece 311 and the housing 312 move relative to each other, the mounting hole 3122A can limit the center piece 311 and the housing 312 to prevent the center piece 311 and the housing 312 from shaking or deviating.

[0103] In order to make the center piece 311 slide more smoothly in the mounting hole 3122A, Figure 8 As shown, Figure 8 for Figure 5 In the enlarged schematic diagram of the structure at point B, the actuator 31 further includes a first sliding bearing 315. The first sliding bearing 315 is disposed in the mounting hole 3122A and has an interference fit with the top wall 3122. The center piece 311 is inserted into the first sliding bearing 315 and is slidably connected to the first sliding bearing 315.

[0104] It should be noted that the inner surface of the first sliding bearing 315 is usually provided with a lubricating coating, or provided with a lubricant such as water or oil, so as to reduce the friction between the first sliding bearing 315 and the center piece 311, so that the center piece 311 and the housing 312 can slide relative to each other more smoothly.

[0105] Furthermore, the first sliding bearing 315 is typically made of a metal material such as bearing alloy, bronze, aluminum-based alloy, zinc-based alloy, or a plastic material such as phenolic plastic, nylon, or polytetrafluoroethylene. These materials have high hardness and therefore good compressive strength and wear resistance. This reduces wear on the center piece 311 and the first sliding bearing 315 during sliding movement, thereby increasing their service life.

[0106] In addition, the first sliding bearing 315 is connected to the top wall 3122 by interference fit, which is convenient. Moreover, compared with bolt connection, etc., it can avoid drilling holes in the sliding bearing, thereby ensuring the structural strength of the sliding bearing.

[0107] In some embodiments, in order to prevent the first sliding bearing 315 from sliding relative to the housing 312 along the axial direction of the housing 312 in the direction away from the top cover 33 during use, thereby affecting the stability of the relative sliding between the center piece 311 and the housing 312, as shown in FIG. Figure 9 、 Figure 10 and Figure 11 As shown, Figure 9 is a schematic front view of a partial structure of the actuator 31, Figure 10 for Figure 9 Schematic diagram of the FF cross-section structure, Figure 10 FIG shows the connection relationship between the first sliding bearing 315 and the top wall 3122. Figure 11 for Figure 10 Enlarged schematic diagram of the structure at point C in the middle.

[0108] The inner wall of the housing 312 is provided with a limiting boss 3125. Exemplarily, the limiting boss 3125 can be provided on the inner wall surface of the peripheral wall plate 3124, and can also be provided on the inner wall surface of the top wall 3122.

[0109] The limiting boss 3125 is located on the side of the first sliding bearing 315 facing away from the top cover 33 and is used to limit the position of the first sliding bearing 315. Specifically, the limiting boss 3125 can contact the first sliding bearing 315, thereby limiting the first sliding bearing 315 from sliding relative to the housing 312 in the axial direction of the housing 312 away from the top cover 33, thereby improving the stability of the first sliding bearing 315 within the mounting hole 3122A.

[0110] For example, the limiting boss 3125 may be an annular structure surrounding the axis of the housing 312 , or may be a plurality of protrusions spaced apart along the circumference of the mounting hole 3122A.

[0111] In order to prevent the limiting boss 3125 from affecting the sliding connection between the center piece 311 and the first sliding bearing 315, as shown in FIG. Figure 11 As shown, the equivalent inner diameter of the limiting boss 3125 (such as Figure 11 The diameter R1 shown in FIG is larger than the equivalent inner diameter of the first sliding bearing 315 (eg Figure 11 In this way, when the center piece 311 and the first sliding bearing 315 slide relative to each other, the center piece 311 can be prevented from contacting the limiting boss 3125, thereby preventing the limiting boss 3125 from affecting the relative sliding of the center piece 311 and the first sliding bearing 315, and preventing the limiting boss 3125 from causing wear on the center piece 311.

[0112] It should be noted that the limiting boss 3125 can be a circular ring structure, an elliptical ring or a ring structure similar to a circular ring. The equivalent inner diameter refers to the inner diameter of the limiting boss 3125 when the limiting boss 3125 is equivalent to a circular ring structure.

[0113] In addition, in order to improve the limiting effect of the limiting boss 3125 on the first sliding bearing 315, as shown in FIG. Figure 11 As shown, the distance between the inner circumference of the limiting boss 3125 and the outer circumference of the first sliding bearing 315 (as shown in FIG. Figure 11 The distance L1 shown is greater than the thickness of the first sliding bearing 315 in the radial direction (e.g. Figure 11 In this way, the contact area between the limiting boss 3125 and the first sliding bearing 315 can be ensured, thereby improving the limiting effect of the limiting boss 3125 on the first sliding bearing 315.

[0114] In some embodiments, in order to prevent the first sliding bearing 315 from sliding relative to the housing 312 along the axial direction of the housing 312 toward the top cover 33 during use, thereby affecting the stability of the relative sliding between the center piece 311 and the housing 312, as shown in FIG. Figure 11 As shown, a slot 3126 is further formed on the inner wall surface of the housing 312. Specifically, the slot 3126 is provided on the inner wall surface of the top wall 3122.

[0115] The actuator 31 also includes a snap ring 316, which is engaged within the retaining groove 3126 and is located on the side of the first sliding bearing 315 facing away from the limiting boss 3125, thereby limiting the position of the first sliding bearing 315. Specifically, the snap ring 316 can contact the side of the first sliding bearing 315 facing away from the limiting boss 3125, thereby limiting the sliding of the first sliding bearing 315 relative to the housing 312 along the axial direction of the housing 312 toward the top cover 33, thereby improving the stability of the first sliding bearing 315 within the mounting hole 3122A.

[0116] In some examples, the snap ring 316 may be a closed annular structure. The retaining groove 3126 may be an annular structure extending around the axis of the housing 312. The retaining groove 3126 may also be a plurality of grooves spaced apart along the circumference of the housing 312. In this case, the outer wall of the snap ring 316 may be provided with a plurality of protrusions, each protrusion being engaged in a respective groove.

[0117] In other examples, such as Figure 12 As shown, Figure 12 for Figure 9 A schematic diagram of the structure of the snap ring 316 of the middle actuator 31 shows that the snap ring 316 is provided with an elastic notch 3161. Specifically, the elastic notch 3161 extends through the snap ring 316 axially, extending from the inner wall of the snap ring 316 to the outer wall of the snap ring 316, meaning that the snap ring 316 is a non-enclosed structure. This allows the snap ring 316 to be squeezed toward the elastic notch 3161, thereby deforming the snap ring 316 so that its outer diameter is smaller than the inner diameter of the mounting hole 3122A. This facilitates insertion of the snap ring 316 into the mounting hole 3122A and alignment with the retaining groove 3126. The squeeze on the snap ring 316 is then released, and the snap ring 316 returns to its original position under the action of the elastic force, snapping into the retaining groove 3126.

[0118] To facilitate squeezing of the snap ring 316, portions of the snap ring 316 on either side of the elastic notch 3161 are provided with first and second notches 3162 and 3163, respectively. The first and second notches 3162 and 3163 can be provided on either the outer or inner wall of the snap ring 316. This allows an external tool, such as a clamp, to clamp the first and second notches 3162 and 3163. Force can then be applied to the portion of the snap ring 316 located at the first notch 3162, along the direction from the first notch 3162 toward the second notch 3163. Simultaneously, force can be applied to the portion of the snap ring 316 located at the second notch 3163, along the direction from the second notch 3163 toward the first notch 3162, thereby deforming the snap ring 316.

[0119] On this basis, if Figure 12As shown, the first engaging notch 3162 includes a first end 3162A and a second end 3162B that are opposite to each other. The first end 3162A extends through the snap ring 316, while the second end 3162B is closer to the second engaging notch 3163 than the first end 3162A. As a result, the first engaging notch 3162 is inclined in a direction gradually away from the second engaging notch 3163 from the second end 3162B toward the first end 3162A. Thus, when an external tool is inserted into the first engaging notch 3162 and squeezes the snap ring 316, the inner side surface of the first engaging notch 3162 near the second engaging notch 3163 can limit the external tool, preventing it from falling out of the first engaging notch, thereby improving stability when squeezing the snap ring 316.

[0120] The second engaging notch 3163 includes a third end 3163A and a fourth end 3163B that are opposite each other. The third end 3163A extends through the snap ring 316, while the fourth end 3163B is closer to the first engaging notch 3162 than the third end 3163A. As a result, the second engaging notch 3163 is inclined in a direction gradually away from the first engaging notch 3162 from the fourth end 3163B toward the third end 3163A. Thus, when an external tool is inserted into the second engaging notch 3163 and squeezes the snap ring 316, the inner surface of the second engaging notch 3163 adjacent to the first engaging notch 3162 can limit the external tool, preventing it from falling out of the second engaging notch, thereby improving stability during squeezing of the snap ring 316.

[0121] In some examples, in order to prevent the snap ring 316 from affecting the sliding connection between the center piece 311 and the first sliding bearing 315, as shown in FIG. Figure 11 As shown, the equivalent inner diameter of the snap ring 316 (eg Figure 11 The diameter R3 shown in FIG is larger than the equivalent inner diameter of the first sliding bearing 315 (eg Figure 11 As a result, when the center piece 311 and the first sliding bearing 315 slide relative to each other, the center piece 311 can be prevented from contacting the retaining ring 316, thereby preventing the retaining ring 316 from affecting the relative sliding of the center piece 311 and the first sliding bearing 315, and preventing the retaining ring 316 from causing wear on the center piece 311.

[0122] It should be noted that the retaining ring 316 may be a circular ring structure, an elliptical ring, or a ring structure similar to a circular ring. The equivalent inner diameter refers to the inner diameter of the retaining ring 316 when the retaining ring 316 is equivalent to a circular ring structure.

[0123] In addition, in order to improve the limiting effect of the snap ring 316 on the first sliding bearing 315, as shown in FIG. Figure 11 As shown, the distance between the inner circumference of the snap ring 316 and the outer circumference of the first sliding bearing 315 (as shown in FIG. Figure 11The distance L2 shown is greater than the thickness of the first sliding bearing 315 in the radial direction (such as Figure 11 In this way, the contact area between the snap ring 316 and the first sliding bearing 315 can be ensured, thereby improving the limiting effect of the snap ring 316 on the first sliding bearing 315.

[0124] The first sliding bearing 315 is limited on both sides of the axial direction of the housing 312 by the retaining ring 316 and the limiting boss 3125, so that the first sliding bearing 315 can be prevented from moving axially along the housing 312, thereby ensuring the stability of the relative sliding between the center piece 311 and the first sliding bearing 315.

[0125] In some embodiments, in order to prevent foreign matter such as dust, water, and oil from entering the mounting hole 3122A and affecting the relative sliding between the center piece 311 and the first sliding bearing 315, Figure 11 As shown, the actuator 31 further includes a sealing bracket 317 and a sealing assembly 31A. The sealing bracket 317 is provided on the housing 312.

[0126] In some examples, a sealing bracket 317 is disposed outside the housing 312 and is detachably connected to the top wall 3122 of the housing 312. For example, the sealing bracket 317 can be connected to the top wall 3122 by means of a screw connection, a snap connection, or the like. The sealing bracket 317 is used to secure the sealing assembly 31A to the housing. The detachable connection between the sealing bracket 317 and the top wall 3122 of the housing 312 facilitates removal and installation of the sealing bracket 317 from the housing 312, thereby facilitating removal and installation of the sealing assembly 31A.

[0127] A sealing assembly 31A is disposed between the sealing bracket 317 and the centerpiece 311. This seal is used to seal the housing 312 and the centerpiece 311. Specifically, the sealing bracket 317 is provided with a clearance hole 3171, into which the centerpiece 311 passes. A gap exists between the centerpiece 311 and the inner wall of the clearance hole 3171. The sealing assembly 31A is disposed within the clearance hole 3171 and contacts both the inner wall of the clearance hole 3171 and the centerpiece 311, sealing the gap between the inner wall of the clearance hole 3171 and the centerpiece 311.

[0128] With sealing bracket 317 positioned on housing 312 and sealing assembly 31A positioned between sealing bracket 317 and center piece 311, the gap between housing 312 and center piece 311 is sealed. Thus, the sealing effect of sealing assembly 31A prevents foreign matter from entering mounting hole 3122A, thereby preventing foreign matter from affecting the relative movement between center piece 311 and housing 312, thereby improving the reliability of suspension 3.

[0129] In some examples, a portion of the sealing assembly 31A is disposed between the top wall 3122 and the sealing bracket 317. The sealing bracket 317 and the top wall 3122 can clamp the sealing assembly 31A from both sides, thereby securing the sealing assembly 31A to the housing 312. In this manner, the sealing assembly 31A is installed outside the housing 312, eliminating space limitations and facilitating installation of the sealing assembly 31A.

[0130] like Figure 8 As shown, the sealing assembly 31A is disposed around the center piece 311 and is in contact with the center piece 311. In this way, the portion of the sealing assembly 31A located between the sealing bracket 317 and the top wall 3122 can seal the gap between the sealing bracket 317 and the top wall 3122. In addition, the sealing assembly 31A is disposed around the center piece 311 and is in contact with the center piece 311, and can seal the gaps between the center piece 311 and the top wall 3122 and the sealing bracket 317, thereby preventing foreign matter from entering the mounting hole 3122A of the top wall 3122, thereby preventing foreign matter from affecting the relative sliding of the center piece 311 and the housing 312, and improving the reliability of the suspension 3.

[0131] It will be appreciated that the first sliding bearing 315 is disposed within the mounting hole 3122A. Therefore, the sealing assembly 31A is located on the side of the first sliding bearing 315 closest to the top cover 33. Specifically, the sealing assembly 31A is located on the side of the limiting boss 3125 facing away from the first sliding bearing 315. In this way, the sealing assembly 31A seals the gap between the center piece 311, the top wall 3122, and the sealing bracket 317, preventing foreign matter from entering the mounting hole 3122A and, consequently, from entering between the first sliding bearing 315 and the center piece 311, thereby affecting the relative sliding between the center piece 311 and the first sliding bearing 315.

[0132] In some examples, sealing assembly 31A may include a sealing member 318 and a press piece 318A. A portion of sealing member 318 is disposed between top wall 3122 and sealing bracket 317. Sealing member 318 is disposed around and in contact with center piece 311. Sealing member 318 can seal the gap between sealing bracket 317 and top wall 3122, as well as the gap between housing 312 and center piece 311.

[0133] The pressing piece 318A can be disposed between the sealing bracket 317 and the portion of the sealing member 318 located between the top wall 3122 and the sealing bracket 317. The sealing bracket 317 can press the sealing member 318 against the top wall 3122 via the pressing piece 318A, thereby securing the sealing member 318. In this way, the pressing piece 318A can press the sealing member 318 more tightly, thereby improving the sealing effect of the sealing member 318.

[0134] In some embodiments, as Figure 13 As shown, Figure 13 The figure is a schematic diagram of the three-dimensional structure of the sealing member 318 in the embodiment of the present application. The sealing member 318 includes an annular sealing portion 3181 and a supporting portion 3182. The inner circumference of the annular sealing portion 3181 contacts the center member 311. Specifically, the center member 311 is disposed through the annular sealing portion 3181 and abuts against the inner wall surface of the annular sealing portion 3181.

[0135] The support portion 3182 is connected to the outer circumference of the annular sealing portion 3181 and is disposed around the annular sealing portion 3181. The support portion 3182 is disposed between the top wall 3122 and the sealing bracket 317. Specifically, the support portion 3182 can surround the sealing portion. The arrangement of the annular sealing portion 3181 and the support portion 3182 facilitates the securing of the sealing member 318 via the sealing bracket 317.

[0136] In addition, the sealing member 318 may also be a cylindrical, elliptical, or irregularly shaped tubular structure, or a circular, elliptical, or irregularly shaped annular sheet structure.

[0137] In some examples, the pressing piece 318A is disposed between the support portion 3182 and the top wall 3122. The pressing piece 318A can press the support portion 3182 against the top wall 3122, thereby improving the sealing effect of the support portion 3182 on the gap between the sealing bracket 317 and the top wall 3122.

[0138] In some examples, the pressing piece 318A is disposed around the annular sealing portion 3181. For example, the pressing piece 318A may surround the annular sealing portion 3181. In this way, the pressing piece 318A may have a larger contact area with the support portion 3182, thereby improving the compression effect on the support portion 3182 and thus improving the sealing effect of the support portion 3182.

[0139] In some examples, the support portion 3182 may be a sheet-like structure. In other examples, the radial cross-section of the support portion 3182 may be square, circular, elliptical, etc., wherein the radial cross-section passes through the axis of the support portion 3182.

[0140] In some examples, the annular sealing portion 3181 may be located on one side of the support portion 3182 in the axial direction of the housing 312 . In this case, a portion of the annular sealing portion 3181 may also be located on the inner side of the support portion 3182 .

[0141] In other examples, such as Figure 14 As shown, Figure 14 for Figure 13 In the front view of the center seal 318, the two ends of the annular sealing portion 3181 along the axial direction are respectively a first sealing end 3181A and a second sealing end 3181B; along the axial direction of the annular sealing portion 3181, the support portion 3182 is located between the first sealing end 3181A and the second sealing end 3181B. In other words, along the axial direction of the annular sealing portion 3181, the annular sealing portion 3181 extends to both sides of the support portion 3182. In this way, the structural strength of the seal 318 can be enhanced, and when the center piece 311 and the seal 318 slide relative to each other, part of the annular sealing portion 3181 and the center piece 311 on both sides of the support portion 3182 in the axial direction of the seal 318 rub against each other, thereby reducing the large axial shaking of the annular sealing portion 3181 and improving the sealing effect.

[0142] In some examples, a portion of the annular sealing portion 3181 is located within the mounting hole 3122A and contacts the inner wall of the mounting hole 3122A. This can further seal the gap between the center piece 311 and the inner wall of the mounting hole 3122A, thereby improving the sealing effect.

[0143] In some examples, such as Figure 15 As shown, Figure 15 for Figure 14 MM cross-sectional structural diagram, when the annular sealing portion 3181 is in a free state (i.e., the state when the sealing member 318 is not installed on the housing 312), along the axial direction of the annular sealing portion 3181, the inner circumferential surface of the annular sealing portion 3181 and the axis of the annular sealing portion 3181 (such as Figure 15 The spacing between the vertical dashed lines shown in Figure 15 The spacing L3 shown first increases and then decreases. That is, the inner edge of the radial cross-section of the annular sealing portion 3181 is an arc, with the concave side of the arc facing the axis of the annular sealing portion 3181. Alternatively, the inner edge of the radial cross-section of the annular sealing portion 3181 is two intersecting line segments, with the angle formed by the intersection of the two line segments facing the axis of the annular sealing portion 3181. The radial cross-section of the annular sealing portion 3181 passes through the axis of the annular sealing portion 3181.

[0144] By first increasing and then decreasing the distance between the inner circumference of the annular sealing portion 3181 and the axis of the annular sealing portion 3181, the annular sealing portion 3181 is more easily deformed when the annular sealing portion 3181 abuts against the center piece 311, thereby making the annular sealing portion 3181 fit more closely with the center piece 311, thereby improving the sealing effect of the annular sealing portion 3181.

[0145] In some embodiments, as Figure 16 As shown, Figure 16 This is a schematic diagram of the three-dimensional structure of the sealing bracket 317 in an embodiment of the present application. The sealing bracket 317 includes a main body 3172 and a connecting portion 3173. The main body 3172 is located on the side of the support portion 3182 facing away from the top wall 3122. The main body 3172 contacts the surface of the support portion 3182 facing away from the top wall 3122. The main body 3172 and the top wall 3122 clamp the support portion 3182 from both sides, thereby fixing the support portion 3182 to the housing 312.

[0146] The connecting portion 3173 is connected to the main body 3172 and is also connected to the housing 312. Exemplarily, the connecting portion 3173 is a flange structure, and is provided with a plurality of bolt holes spaced along the circumference of the seal 318. Bolts are inserted through the bolt holes and screwed into the top wall 3122 to achieve the connection between the connecting portion 3173 and the housing 312. Exemplarily, the connecting portion 3173 may also be a snap-fit ​​structure, for example, the connecting portion 3173 is a snap-fitting protrusion provided around the main body 3172, and the snap-fitting protrusion is snapped into a snap-fitting groove on the top wall 3122 to achieve the connection between the connecting portion 3173 and the housing 312.

[0147] like Figure 17 and Figure 18 As shown, Figure 17 This is one of the schematic diagrams of the positional relationship between the sealing bracket 317 and the sealing member 318 in the embodiment of the present application. Figure 18 This is the second schematic diagram of the positional relationship between the sealing bracket 317 and the sealing member 318 in the embodiment of the present application. Figure 17 and Figure 18 The seal holder 317 and the seal 318 are viewed from both sides of the seal 318 in the axial direction.

[0148] The connecting portion 3173 is disposed around the supporting portion 3182. Specifically, the supporting portion 3182 is located inside the connecting portion 3173. Furthermore, the annular sealing portion 3181 is located between the sealing bracket 317 and the center piece 311. This allows the connecting portion 3173 to shield the supporting portion 3182, thereby allowing the sealing bracket 317 to shield the sealing element 318, protecting the sealing element 318 from leakage and damage. Furthermore, the connecting portion 3173 can directly contact and connect with the top wall 3122, thereby reducing the gap between the sealing bracket 317 and the top wall 3122 and improving the aesthetics of the actuator 31.

[0149] Specifically, such as Figure 19 and Figure 20 As shown, Figure 19 for Figure 16 A schematic front view of the middle sealing bracket 317, Figure 20 for Figure 19 In the schematic diagram of the NN cross-sectional structure, the connecting portion 3173 is located on the side of the main body 3172 facing the top, and part of the connecting portion 3173 is located on the outside of the main body 3172. The inner diameter of the connecting portion 3173 is larger than the inner diameter of the main body 3172, so that the connecting portion 3173 and the main body 3172 form a step structure. In this way, the support portion 3182 of the seal 318 can be located on the inner side of the connecting portion 3173, and the surface of the support portion 3182 facing away from the top wall 3122 is in contact with the surface of the main body 3172 facing the top wall 3122. At this time, part of the annular sealing portion 3181 can be located on the inner side of the main body 3172, and the other part can be located in the mounting hole 3122A, so that the sealing bracket 317 can shield and protect the seal 318.

[0150] In some embodiments, in order to facilitate the control of the relative displacement of the center piece 311 and the shell 312 after relative movement, so as to more accurately adjust the distance between the wheel 2 and the vehicle body, and more accurately adjust the buffering performance of the elastic element 34, the actuator 31 is usually provided with a position sensor 319 to detect the relative displacement of the center piece 311 and the shell 312 through the position sensor 319.

[0151] Specifically, the position sensor 319 may be a magnetic grating sensor. A magnetic grating sensor is a displacement measurement sensor that utilizes the magnetic interaction between a magnetic grating and a magnetic head. Figure 21 As shown, Figure 21 for Figure 3In the enlarged schematic diagram of the structure at point D, position sensor 319 includes a sensor head 3191 and a magnetic scale 3192. The magnetic scale 3192 is connected to the centerpiece 311, and the sensor head 3191 is connected to the sealing bracket 317. As a result, when the centerpiece 311 and the housing 312 move relative to each other, the sensor head 3191 and the magnetic scale 3192 also move relative to each other. This allows the sensor head 3191 to detect changes in the magnetic field strength on the magnetic scale 3192, and thus detect changes in the position of the magnetic scale 3192, thereby determining the relative displacement between the centerpiece 311 and the housing 312.

[0152] In order to facilitate the installation of the sensor reader 3191 on the sealing bracket 317, Figure 16 As shown, the main body 3172 is provided with a mounting notch 3174. Figure 21 As shown, the sensor head 3191 is disposed in the mounting notch 3174 and connected to the main body 3172. By installing the sensor head 3191 in the mounting notch 3174, the arrangement of the sensor head 3191 and the sealing bracket 317 can be made more reasonable, avoiding occupying a large space.

[0153] The sensor reader 3191 can be connected to the installation notch 3174 by snapping or screwing.

[0154] In some embodiments, the linear electrode also includes a connecting wire (not shown in the figure), the sensor reader 3191 is connected to the connecting wire, and the connecting wire is connected to the power supply of the vehicle 1000, so that the power supply supplies power to the sensor reader 3191 through the connecting wire to facilitate the operation of the sensor reader 3191.

[0155] To avoid tangled cables, Figure 21 As shown, a first wire groove 3175 is defined on the sealing bracket 317, and a second wire groove 3127 is defined on the housing 312. The first wire groove 3175 and the second wire groove 3127 are connected. Connecting wires are provided in the first and second wire grooves 3175 and 3127. This allows the connecting wires to be stored in the first and second wire grooves 3175 and 3127, preventing them from becoming too scattered and making replacement and repair difficult. Furthermore, the first and second wire grooves 3175 and 3127 provide protection for the connecting wires, preventing them from being damaged.

[0156] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An actuator, characterized in that: include: a first component and a second component movable relative to each other along the axial direction of the actuator; The first component includes a housing (312), and the second component includes a center piece (311), wherein the center piece (311) and the housing (312) can move relative to each other along the axial direction of the actuator; a sealing bracket (317), the sealing bracket (317) being arranged on the housing (312); A sealing assembly (31A) is provided between the sealing bracket (317) and the center piece (311), and the sealing assembly (31A) is used to achieve sealing between the housing (312) and the center piece (311).

2. The actuator according to claim 1, characterized in that The sealing bracket (317) is arranged on the outside of the shell (312) and is detachably connected to the top wall (3122) of the shell (312).

3. The actuator according to claim 2, characterized in that A portion of the sealing component (31A) is disposed between the top wall (3122) and the sealing bracket (317), and the sealing component (31A) is disposed around the center piece (311) and is in contact with the center piece (311).

4. The actuator according to claim 3, characterized in that The sealing assembly (31A) includes a sealing member (318), wherein the sealing member (318) includes: an annular sealing portion (3181), wherein the inner circumferential surface of the annular sealing portion (3181) contacts the center piece (311); A support portion (3182), the support portion (3182) is connected to the outer peripheral surface of the annular sealing portion (3181) and is arranged around the annular sealing portion (3181), and the support portion (3182) is arranged between the top wall (3122) and the sealing bracket (317).

5. The actuator according to claim 4, characterized in that When the annular sealing portion (3181) is in a free state, along the axial direction of the annular sealing portion (3181), the distance between the inner circumferential surface of the annular sealing portion (3181) and the axis of the annular sealing portion (3181) first increases and then decreases.

6. The actuator according to claim 4, characterized in that The two ends of the annular sealing portion (3181) along the axial direction are respectively a first sealing end (3181A) and a second sealing end (3181B); Along the axial direction of the annular sealing portion (3181), the support portion (3182) is located between the first sealing end (3181A) and the second sealing end (3181B).

7. The actuator according to claim 4, characterized in that The sealing assembly (31A) further comprises: A pressing plate (318A), wherein the pressing plate (318A) is disposed between the supporting portion (3182) and the top wall (3122).

8. The actuator according to claim 7, characterized in that The pressing sheet (318A) is arranged around the annular sealing portion (3181).

9. The actuator according to claim 4, characterized in that The sealing bracket (317) comprises: a main body portion (3172), the main body portion (3172) being located on a side of the support portion (3182) facing away from the top wall (3122); The connecting portion (3173) is connected to the main body (3172) and is arranged around the supporting portion (3182). The connecting portion (3173) is connected to the shell (312).

10. The actuator according to claim 2, characterized in that The top wall (3122) is provided with a mounting hole (3122A), and the mounting hole (3122A) is communicated with the internal space of the shell (312); A center piece (311), the center piece (311) is inserted into the mounting hole (3122A), and a portion of the center piece (311) is located in the housing (312).

11. The actuator according to claim 10, characterized in that The actuator further includes a first sliding bearing (315), which is disposed in the mounting hole (3122A) and is interference-fitted with the top wall (3122); the center piece (311) is passed through the first sliding bearing (315) and is slidably connected to the first sliding bearing (315).

12. The actuator according to claim 11, characterized in that The inner wall surface of the housing (312) is provided with a limiting boss (3125), and the limiting boss (3125) is located on the side of the first sliding bearing (315) facing away from the sealing assembly (31A) to limit the first sliding bearing (315).

13. The actuator according to claim 12, characterized in that The limiting boss (3125) is arranged around the axis of the housing (312).

14. The actuator according to claim 13, characterized in that The equivalent inner diameter of the limiting boss (3125) is greater than the equivalent inner diameter of the first sliding bearing (315).

15. The actuator according to claim 13, wherein: The distance between the inner circumferential surface of the limiting boss (3125) and the outer circumferential surface of the first sliding bearing (315) is greater than half of the thickness of the first sliding bearing (315) in the radial direction.

16. The actuator according to any one of claims 11 to 15, characterized in that: A slot (3126) is also formed on the inner wall surface of the housing (312); The actuator further includes a snap ring (316), which is snap-fitted into the snap groove (3126) and located between the first sliding bearing (315) and the sealing assembly (31A) to limit the position of the first sliding bearing (315).

17. The actuator according to claim 16, characterized in that The equivalent inner diameter of the snap ring (316) is larger than the equivalent inner diameter of the first sliding bearing (315).

18. The actuator according to claim 16, wherein: The distance between the inner circumferential surface of the retaining ring (316) and the outer circumferential surface of the first sliding bearing (315) is greater than half the thickness of the first sliding bearing (315) in the radial direction.

19. The actuator according to claim 16, wherein: The snap ring (316) is provided with an elastic notch (3161), and parts of the snap ring (316) on both sides of the elastic notch (3161) are respectively provided with a first snap-fitting notch (3162) and a second snap-fitting notch (3163).

20. The actuator according to claim 19, characterized in that The first clamping notch (3162) includes a first end (3162A) and a second end (3162B) opposite to each other, the first end (3162A) passes through the clamping ring (316), and the second end (3162B) is closer to the second clamping notch (3163) than the first end (3162A); The second snap-fitting notch (3163) includes a third end (3163A) and a fourth end (3163B) opposite to each other, wherein the third end (3163A) passes through the snap ring (316), and the fourth end (3163B) is closer to the first snap-fitting notch (3162) than the third end (3163A).

21. The actuator according to claim 9, characterized in that The main body (3172) is provided with a mounting notch (3174); The actuator also includes a sensor reader (3191) and a magnetic scale (3192), wherein the magnetic scale (3192) is connected to the center piece (311), and the sensor reader (3191) is disposed in the mounting notch (3174) and connected to the main body (3172), and the sensor reader (3191) is used to detect changes in the magnetic field strength of the magnetic scale (3192).

22. The actuator according to claim 21, characterized in that The sealing bracket (317) is provided with a first wire groove (3175), and the housing (312) is provided with a second wire groove (3127), wherein the first wire groove (3175) is in communication with the second wire groove (3127); The actuator further includes a sensor connecting line, which is connected to the sensor reader (3191) and is provided in the first wire groove (3175) and the second wire groove (3127).

23. The actuator according to claim 1, wherein: The actuator further includes a drive assembly (313), which is disposed between a portion of the center piece (311) within the housing (312) and the housing (312) and is used to drive the housing (312) to move axially of the actuator relative to the center piece (311).

24. The actuator according to claim 23, characterized in that The driving component (313) includes an electromagnetic coil (3131) and a magnetic member (3132), one of the electromagnetic coil (3131) and the magnetic member (3132) is connected to the shell (312) and forms the first component together with the shell (312), and the other of the electromagnetic coil (3131) and the magnetic member (3132) is connected to the center member (311) and forms the second component together with the center member (311).

25. A suspension, characterized in that: include: The actuator according to any one of claims 1 to 24; a fork arm (32), connected to the housing (312); a top cover (33) connected to the center piece (311); An elastic element (34), wherein the elastic element (34) is arranged between the shell (312) and the top cover (33).

26. A vehicle, characterized in that: include: The suspension according to claim 25; A vehicle body (1) connected to one of the fork arm (32) and the top cover (33); The wheel (2) is arranged below the vehicle body and is connected to the other of the fork arm (32) and the top cover (33).

Images