Linear motor, suspension system and vehicle

Abstract

The utility model discloses a linear motor, a suspension system and a vehicle. The linear motor comprises a housing; the stator assembly is fixed on the shell; the rotor assembly is suitable for moving in the first direction relative to the stator assembly, a first adjusting cavity and a second adjusting cavity are defined between the two ends, in the first direction, of the rotor assembly and the shell correspondingly, and the first adjusting cavity and the second adjusting cavity can be filled with driving media; the rotor assembly can move in the first direction so as to adjust the volume of the first adjusting cavity and the volume of the second adjusting cavity. When the rotor assembly moves in the first direction relative to the stator assembly, the volumes of the two adjusting cavities can be adjusted, driving force is transmitted through the driving media filled in the adjusting cavities, and various driving requirements are met. And meanwhile, the driving force is transmitted through the driving medium filled in the adjusting cavity, so that the driving force output stability of the linear motor is good, and the reliability is high.

Description

Technical Field

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

[0002] In the related art, the linear motor is integrated into the shock absorber, which results in a complex structure of the shock absorber and poor power output stability of the linear motor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a linear motor, the linear motor has stable driving force output and high reliability.

[0004] The utility model also provides a suspension system.

[0005] The utility model also provides a vehicle.

[0006] According to the linear motor of the first aspect of the utility model, the linear motor includes a housing; a stator assembly, which is fixed to the housing; a mover assembly, which is suitable for moving relative to the stator assembly along the first direction, and the mover assembly defines a first adjustment chamber and a second adjustment chamber between the housing and the two ends of the mover assembly in the first direction respectively; wherein the mover assembly can move along the first direction to adjust the volume of the first adjustment chamber and the second adjustment chamber.

[0007] According to the linear motor of the embodiment of the utility model, two adjustment chambers (a first adjustment chamber and a second adjustment chamber) are formed on both sides of the mover assembly, and the volumes of the two adjustment chambers can be adjusted when the mover assembly moves relative to the stator assembly in the first direction, so that the driving force can be transmitted through the driving medium filled in the adjustment chamber, and then the driving force can be output through the first adjustment chamber or the second adjustment chamber to meet various driving requirements. At the same time, the driving force is transmitted through the driving medium filled in the adjustment chamber, so that the driving force output of the linear motor is stable and reliable.

[0008] According to some embodiments of the present utility model, the shell includes: a shell body, the stator assembly is installed on the shell body; a first shell, the first shell is arranged at one end of the shell body in the first direction, one end of the mover assembly is arranged in the first shell, and defines the first adjustment cavity with the first shell; a second shell, the second shell is arranged at the other end of the shell body in the first direction, the other end of the mover assembly is arranged in the second shell, and defines the second adjustment cavity with the second shell.

[0009] According to some embodiments of the utility model, the mover assembly also includes: a first piston, which is arranged at one end of the mover assembly and defines the first regulating chamber with the first housing; and a second piston, which is arranged at the other end of the mover assembly and defines the first regulating chamber with the second housing.

[0010] According to some embodiments of the present invention, the first shell is provided with a first port, and the first port is communicated with the first regulating chamber; the second shell is provided with a second port, and the second port is communicated with the second regulating chamber.

[0011] According to some embodiments of the present invention, the first port is arranged at one end of the first shell body in the first direction away from the shell body; and / or the second port is arranged at one end of the second shell body in the first direction away from the shell body.

[0012] According to some embodiments of the present invention, the linear motor further comprises a sealing member, wherein the sealing member is disposed between the mover assembly and the shell body and is used for sealing the mover assembly and the shell body.

[0013] According to the suspension system of the embodiment of the second aspect of the utility model, it includes: a linear motor, the linear motor mentioned above; a shock absorber, the shock absorber is suitable for being connected between the vehicle body and the axle, and the shock absorber is provided with a third regulating chamber and a fourth regulating chamber whose volumes can be adjusted simultaneously, the third regulating chamber is connected to the first regulating chamber, and the fourth regulating chamber is connected to the second regulating chamber; wherein the first regulating chamber and the third regulating chamber are filled with a first driving medium, and the second regulating chamber and the fourth regulating chamber are filled with a second driving medium.

[0014] According to some embodiments of the utility model, the shock absorber includes: a main body, a cavity is formed in the main body; a driving member, at least a portion of which is disposed in the cavity and divides the cavity into the third adjustment chamber and the fourth adjustment chamber arranged along the second direction, and the driving member can move relative to the main body along the second direction.

[0015] According to some embodiments of the present invention, the suspension system further comprises:

[0016] a first connecting pipe, the first connecting pipe being connected between the first regulating chamber and the third regulating chamber;

[0017] And / or, a second connecting pipe, wherein the second connecting pipe is connected between the second regulating chamber and the fourth regulating chamber.

[0018] According to some embodiments of the utility model, the suspension system also includes: a first pressure accumulator, which is connected in series between the first regulating chamber and the third regulating chamber and is used to adjust the pressure between the first regulating chamber and the second regulating chamber; and / or a second pressure accumulator, which is connected in series between the second regulating chamber and the fourth regulating chamber and is used to adjust the pressure between the second regulating chamber and the fourth regulating chamber.

[0019] A vehicle according to an embodiment of the third aspect of the utility model includes the above-mentioned suspension system.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of a suspension system according to an embodiment of the utility model;

[0023] Figure 2 is a cross-sectional view of a linear motor according to an embodiment of the utility model;

[0024] Figure 3 is an exploded view of a linear motor according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of a shock absorber according to an embodiment of the utility model;

[0026] Figure 5 yes Figure 4 Section view at midline AA.

[0027] Reference numerals

[0028] Suspension system 1000;

[0029] Linear motor 100;

[0030] Shell body 11; first shell 12; first port 121; second shell 13; second port 131; first regulating chamber 14; second regulating chamber 15;

[0031] Stator assembly 2; winding 21; base 22;

[0032] Mover assembly 3; first piston 31; second piston 32; base 33; permanent magnet 34; seal 4;

[0033] Shock absorber 200;

[0034] Main body 201; third adjustment chamber 2011; fourth adjustment chamber 2012; first mounting frame 2013; second mounting frame 2014;

[0035] Driving member 202; plug body 2021; rod 2022; upper support block 203; lower support block 204;

[0036] First connecting pipe 301 ; second connecting pipe 302 ; first pressure accumulator 401 ; second pressure accumulator 402 ; first pressure sensor 501 ; second pressure sensor 502 . DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] Reference below Figure 1-Figure 5 A linear motor 100 , a suspension system 1000 , and a vehicle according to an embodiment of the present invention are described.

[0039] The linear motor 100 according to the embodiment of the present invention includes a housing, a stator assembly 2 and a mover assembly 3 .

[0040] like Figure 2 As shown, the stator assembly 2 is fixed on the housing, the mover assembly 3 is penetrated through the stator assembly 2 along a first direction, and the mover assembly 3 can move relative to the stator assembly 2 along the first direction.

[0041] The mover assembly 3 defines a first regulating chamber 14 and a second regulating chamber 15 between the housing and the two ends in the first direction. When the mover assembly 3 moves along the first direction, the volumes of the first regulating chamber 14 and the second regulating chamber 15 can be adjusted simultaneously.

[0042] It should be noted that the first regulating chamber 14 and the second regulating chamber 15 may be filled with a driving medium (such as oil, etc.). When the volume of the first regulating chamber 14 and the second regulating chamber 15 changes, the oil may flow out of the regulating chamber with a smaller volume (including the first regulating chamber 14 and the second regulating chamber 15), and the oil may also be replenished into the regulating chamber with a larger volume through a device or equipment connected to the regulating chamber. The above-mentioned driving medium is the medium required for transmitting the driving force when the linear motor 100 is used, and the composition of the driving medium is not specifically limited here.

[0043] Reference Figure 2, the first regulating chamber 14 and the second regulating chamber 15 are respectively formed on both sides of the mover assembly 3 in the first direction. When the mover assembly 3 moves to the left or right ("left" and "right" refer to the left and right in the direction of the drawing) relative to the stator assembly 2 along the first direction, the volume of one of the first regulating chamber 14 and the second regulating chamber 15 will increase, and the volume of the other regulating chamber in the first regulating chamber 14 and the second regulating chamber 15 will decrease. At this time, the driving medium will be discharged through the regulating chamber with reduced volume, and the linear motor 100 can output the driving force outward through the driving medium output from this side (the side where the regulating chamber volume is reduced). Among them, the output driving force will be transmitted to the area connected to the above-mentioned regulating chamber.

[0044] Specifically, when the movable assembly 3 moves toward the left side along the first direction relative to the stator assembly 2, the volume of the first regulating chamber 14 decreases, and at the same time the volume of the second regulating chamber 15 increases, the driving medium filled in the first regulating chamber 14 will be discharged, and at this time the linear motor 100 can output driving force through the driving medium discharged from the first regulating chamber 14; when the movable assembly 3 moves toward the right side along the first direction relative to the stator assembly 2, the volume of the second regulating chamber 15 decreases, and at the same time the volume of the first regulating chamber 14 increases, the driving medium filled in the second regulating chamber 15 will be discharged, and at this time the linear motor 100 can output driving force through the driving medium discharged from the second regulating chamber 15.

[0045] In the present application, two adjustment chambers (a first adjustment chamber 14 and a second adjustment chamber 15) are formed on both sides of the mover assembly 3, and the volumes of the two adjustment chambers can be adjusted when the mover assembly 3 moves relative to the stator assembly 2 in the first direction, so that the driving force can be transmitted through the driving medium filled in the adjustment chamber, and then the driving force can be output through the first adjustment chamber 14 or the second adjustment chamber 15 to meet various driving requirements. At the same time, the driving force is transmitted through the driving medium filled in the adjustment chamber, so that the driving force output of the linear motor 100 is stable and reliable.

[0046] In some embodiments of the present invention, Figure 2 As shown, the housing includes: a housing body 11 , a first housing 12 and a second housing 13 .

[0047] Specifically, the stator assembly 2 is installed on the shell body 11, the first shell 12 is arranged at one end of the shell body 11 in the first direction, one end of the mover assembly 3 is arranged in the first shell 12, and defines a first adjustment chamber 14 with the first shell 12, the second shell 13 is arranged at the other end of the shell body 11 in the first direction, the other end of the mover assembly 3 is arranged in the second shell 13, and defines a first adjustment chamber 14 with the second shell 13.

[0048] Reference Figure 2The mover assembly 3 passes through the shell body 11 at both ends in the first direction, and the mover assembly 3 is respectively placed in the first shell 12 and the second shell 13 at both ends in the first direction, and respectively cooperates with the first shell 12 and the second shell 13 to form a first adjustment cavity 14 and a second adjustment cavity 15, thereby reducing the assembly difficulty of the linear motor 100 and facilitating the formation of two adjustment cavities between the mover assembly 3 and the shell.

[0049] It is understandable that the stator assembly 2 and the mover assembly 3 can be first assembled to the shell body 11, and then the first shell 12 and the second shell 13 can be respectively assembled to the two sides of the shell body 11 in the first direction, and the first adjustment cavity 14 and the second adjustment cavity 15 are defined between the first shell 12 and the second body and the part of the mover assembly 3 extending out of the shell body 11. Thus, the shell is constructed as multiple parts of a split design (i.e., including the shell body 11, the first shell 12 and the second shell 13), which can reduce the difficulty of assembling the stator assembly 2 and the mover assembly 3 to the shell.

[0050] In a further embodiment of the present invention, Figure 2 As shown, the mover assembly 3 also includes: a first piston 31 and a second piston 32, the first piston 31 is connected to one end of the mover assembly 3, and the first piston 31 and the first housing 12 define a first regulating chamber 14; the second piston 32 is connected to the other end of the mover assembly 3, and the second piston 32 and the second housing 13 define a first regulating chamber 14.

[0051] Specifically, the first piston 31 and the second piston 32 are both arranged on the mover assembly 3. When the mover assembly 3 moves relative to the shell, the mover assembly 3 can drive the first piston 31 and the second piston 32 to move synchronously relative to the shell, thereby adjusting the positions of the first piston 31 and the second piston 32 in the shell, and then adjusting the volume of the first regulating chamber 14 and the second regulating chamber 15.

[0052] Reference Figure 2 It can be understood that when the movable subassembly 3 drives the first piston 31 to move leftward along the first direction, the volume of the first regulating chamber 14 defined between the first piston 31 and the first housing 12 will decrease, and the volume of the second regulating chamber 15 defined between the second piston 32 and the second housing 13 will increase; when the movable subassembly 3 drives the first piston 31 to move rightward along the first direction, the volume of the first regulating chamber 14 defined between the first piston 31 and the first housing 12 will increase, and the volume of the second regulating chamber 15 defined between the second piston 32 and the second housing 13 will decrease.

[0053] In some embodiments of the utility model, the first shell 12 is provided with a first port 121, which is connected to the first regulating chamber 14. The first regulating chamber 14 can be connected to the outside through the first port 121, and the driving medium can be replenished into the first regulating chamber 14 or discharged from the first regulating chamber 14 through the first port 121; the second shell 13 is provided with a second port 131, which is connected to the second regulating chamber 15. The second regulating chamber 15 can be connected to the outside through the second port 131, and the driving medium can be replenished into the second regulating chamber 15 or discharged from the second regulating chamber 15 through the second port 131.

[0054] It can be understood that when the volume of the regulating chamber (the first regulating chamber 14 or the second regulating chamber 15) increases, in order to ensure the pressure balance in the regulating chamber, the driving medium can be supplemented into the regulating chamber through the corresponding port; when the volume of the regulating chamber decreases, the driving medium in the regulating chamber can be discharged outward through the port to transmit the driving force through the driving medium.

[0055] In some embodiments of the present invention, Figure 2 As shown, the first port 121 is disposed at one end of the first shell 12 away from the shell body 11 in the first direction, so that the stability of outputting the driving medium at the first port 121 can be improved.

[0056] In some embodiments of the present invention, Figure 2 As shown, the second port 131 is disposed at one end of the second shell 13 away from the shell body 11 in the first direction, so as to improve the stability of outputting the driving medium at the first port 121 .

[0057] It can be understood that the mover assembly 3 moves along the first direction relative to the stator assembly 2 to apply a driving force along the first direction to the driving medium in the regulating chamber. Forming the ports (first port 121, second port 131) at the ends of the shell in the first direction can facilitate the driving medium to be discharged or flow into the regulating chamber, thereby improving the power output effect of the linear motor 100.

[0058] The first shell 12 and the second shell 13 can be fixed to the shell body 11 by threaded connectors, respectively, and the connection method is simple and reliable. The threaded connectors can be arranged along the first direction (that is, the threaded holes on the shell body 11 extend along the first direction) to improve the connection reliability between the shell body 11 and the first shell 12, and between the shell body 11 and the second shell 13 in the first direction.

[0059] In some embodiments of the present invention, Figure 2 As shown, the linear motor 100 further includes a seal 4, which is disposed between the mover assembly 3 and the housing body 11, and is used to seal the mover assembly 3 and the housing body 11. The seal 4 can be configured as a sealing ring.

[0060] like Figure 2 As shown, the seal 4 is arranged around the mover assembly 3 in the circumferential direction to provide radial support to the mover assembly 3 while sealing the mover assembly 3 and the shell body 11, thereby improving the stability of the mover assembly 3 when it moves relative to the stator assembly 2 along the first direction.

[0061] like Figure 2 As shown, the stator assembly 2 includes a winding 21 and a base 22, the winding 21 is arranged on the base 22, and is fixed to the shell body 11 through the base 22. The mover assembly 3 includes a base 33 and a permanent magnet 34, the permanent magnet 34 is arranged on the base 33, and in the first direction, the permanent magnet 34 is arranged corresponding to at least part of the winding 21, so that the stator assembly 2 and the mover assembly 3 can fully correspond to each other, ensuring the relative motion effect between the stator assembly 2 and the mover assembly 3.

[0062] It is understandable that the winding 21 in the stator assembly 2 can generate a magnetic field after being energized, and the magnetic field can move along the axial direction of the stator assembly 2 (also the "first direction" in this application) to become a traveling wave magnetic field, and the permanent magnet 34 of the mover assembly 3 generates an excitation magnetic field that interacts with the traveling wave magnetic field to generate an electromagnetic force. Under the action of the electromagnetic force, since the stator assembly 2 is fixedly arranged relative to the housing, the mover assembly 3 can move axially relative to the stator assembly 2.

[0063] The suspension system 1000 according to the embodiment of the present invention includes the linear motor 100 and the shock absorber 200 described above.

[0064] The shock absorber 200 can be connected between the vehicle body and the axle, and the shock absorber 200 is provided with a third regulating chamber 2011 and a fourth regulating chamber 2012 whose volumes can be adjusted simultaneously, the third regulating chamber 2011 is communicated with the first regulating chamber 14, and the fourth regulating chamber 2012 is communicated with the second regulating chamber 15. The first regulating chamber 14 and the third regulating chamber 2011 are filled with a first driving medium, and the second regulating chamber 15 and the fourth regulating chamber 2012 are filled with a second driving medium.

[0065] It can be understood that the first driving medium can be reciprocated in the first regulating chamber 14 and the third regulating chamber 2011 to transfer the driving force to the third regulating chamber 2011 through the first driving medium; the second driving medium can be reciprocated in the second regulating chamber 15 and the fourth regulating chamber 2012 to transfer the driving force to the fourth regulating chamber 2012 through the second driving medium. Thus, the driving force generated in the driving process of the linear motor 100 (the mover assembly 3 moves in the first direction relative to the stator assembly 2) can be transferred to the shock absorber 200 through the driving medium (the first driving medium or the second driving medium) to adjust the stiffness of the shock absorber 200, thereby meeting the vibration reduction requirements of the vehicle under different driving conditions.

[0066] In the suspension system 1000, the shock absorber 200 and the linear motor 100 are designed in a split type, and the driving force between the two is transmitted through the driving medium, which can reduce the structural complexity of the shock absorber 200 and appropriately reduce the height dimension occupied by the shock absorber 200 in the vertical direction (i.e., the Z direction of the vehicle) when applied to the suspension system 1000, meeting the design requirements of the vehicle chassis (such as: skateboard chassis, i.e., non-load-bearing body). At the same time, the method of transmitting the driving force through the driving medium has good stability and fast response speed.

[0067] In some embodiments of the present invention, the shock absorber 200 includes a main body 201 and a driving member 202 .

[0068] like Figure 5 As shown, a cavity is formed in the main body 201, at least part of the driving member 202 is disposed in the cavity, and the driving member 202 can separate the cavity into a third regulating cavity 2011 and a fourth regulating cavity 2012 arranged along the second direction, and the driving member 202 can move along the second direction relative to the main body 201. When the driving member 202 moves along the second direction relative to the main body 201, the volumes of the third regulating cavity 2011 and the fourth regulating cavity 2012 separated by the driving member 202 also change accordingly.

[0069] It can be understood that when the driving force is output through the linear motor 100, the volumes of the third adjustment chamber 2011 and the fourth adjustment chamber 2012 change. At this time, the driving force can be transmitted to the driving member 202 through the driving medium to adjust the position of the driving member 202 relative to the main body 201. The driving force generated by the linear motor 100 can be further transmitted through the driving member 202 to adjust the stiffness of the shock absorber 200, so that the shock absorber 200 can meet the vibration reduction requirements of the vehicle when driving on different road conditions.

[0070] It can be further understood that when the linear motor 100 is in a working condition where no driving force is output, the driving medium in the shock absorber 200 can be squeezed by the driving member 202 to input the driving medium into the adjustment cavity of the linear motor 100, and the driving medium drives the mover assembly 3 to move relative to the stator assembly 2 in the first direction, and the winding 21 cuts the magnetic field generated by the permanent magnet 34 to generate alternating current for use by other electrical equipment. In this way, the power generation function of the linear motor 100 can be realized.

[0071] In some embodiments of the present invention, Figure 1As shown, the suspension system 1000 also includes at least one of a first connecting tube 301 and a second connecting tube 302, the first connecting tube 301 is connected between the first regulating chamber 14 and the third regulating chamber 2011, and the first driving medium in the first regulating chamber 14 and the third regulating chamber 2011 can be reciprocated between the first regulating chamber 14 and the third regulating chamber 2011 through the first connecting tube 301; the second connecting tube 302 is connected between the second regulating chamber 15 and the fourth regulating chamber 2012, and the second driving medium in the second regulating chamber 15 and the fourth regulating chamber 2012 can be reciprocated between the second regulating chamber 15 and the fourth regulating chamber 2012 through the second connecting tube 302.

[0072] It can be understood that the first connecting tube 301 and the second connecting tube 302 are used to connect the adjustment chamber (the first adjustment chamber 14 and the second adjustment chamber 15) of the linear motor 100 with the adjustment chamber (the third adjustment chamber 2011 and the fourth adjustment chamber 2012) of the shock absorber 200, so that the linear motor 100 and the shock absorber 200 are designed as a split type, reducing the restrictions on the arrangement position of the linear motor 100 in the suspension system 1000. In other words, the linear motor 100 can be arranged at a position away from the shock absorber 200 assembly according to design requirements.

[0073] In some embodiments of the present invention, Figure 1 As shown, the suspension system 1000 further includes: at least one of a first pressure accumulator 401 and a second pressure accumulator 402. The first pressure accumulator 401 is connected in series between the first regulating chamber 14 and the third regulating chamber 2011; the second pressure accumulator 402 is connected in series between the second regulating chamber 15 and the fourth regulating chamber 2012.

[0074] It should be noted that the pressure accumulator (such as the first pressure accumulator 401 and the second pressure accumulator 402 ) can store hydraulic energy and absorb pressure pulsation and impact pressure. The pressure accumulator can be constructed as a damping valve or an accumulator, and the pressure accumulator can provide oil pressure for the shock absorber 200 .

[0075] In some embodiments of the present utility model, the suspension system 1000 further includes a first pressure sensor 501 and a second pressure sensor 502, wherein the first pressure sensor 501 is used to detect the oil pressure in the first connecting pipe 301, and the second pressure sensor 502 is used to detect the oil pressure in the second connecting pipe 302. The vehicle controller can further control the pressure accumulator and the linear motor 100 according to the pressure values ​​detected by the first pressure sensor 501 and the second pressure sensor 502 to improve driving comfort.

[0076] In some embodiments of the present invention, Figure 5As shown, the driving member 202 is disposed in the main body 201, and the shock absorber 200 also includes a first mounting frame 2013, which is connected to the portion of the driving member 202 located outside the main body 201, and the first mounting frame 2013 can be connected to the vehicle body, so that the shock absorber 200 can be connected to the vehicle body through the first mounting frame 2013.

[0077] In the present invention, the shock absorber 200 further includes a second mounting frame 2014 , which is connected to the main body 201 and can be connected and fixed to the axle, so that the shock absorber 200 can be fixed to the axle through the second mounting frame 2014 .

[0078] In some embodiments of the present invention, the driving member 202 is configured as a piston, and the piston includes a plug body 2021 and a rod 2022. The plug body 2021 is disposed in the main body 201, and the plug body 2021 can separate the cavity into a third regulating cavity 2011 and a fourth regulating cavity 2012 arranged along the second direction. The rod 2022 is connected to the plug body 2021, and at least part of the rod 2022 is disposed outside the main body 201. The driving medium filled in the third regulating cavity 2011 and the fourth regulating cavity 2012 can drive the plug body 2021 to move along the second direction, and the plug body 2021 can drive the rod 2022 to move along the second direction.

[0079] Furthermore, one end of the rod 2022 is connected to the plug body 2021 , and the other end of the rod 2022 is fixedly connected to the first mounting frame 2013 , so that the driving force output by the linear motor 100 can be transmitted to the first mounting frame 2013 through the driving member 202 .

[0080] In some embodiments of the present invention, the shock absorber 200 also includes an upper support block 203 and a lower support block 204, the upper support block 203 is sleeved on the rod portion 2022, and the upper support block 203 is fixedly connected to the first mounting frame 2013, and the lower support block 204 is sleeved on the main body 201, and the lower support block 204 is fixedly connected to the main body 201.

[0081] When the driving force output by the linear motor 100 is transmitted to the driving member 202, the driving member 202 can adjust its position relative to the main body 201, so that the driving member 202 can drive the first mounting frame 2013 and the upper support block 203 to move, so as to adjust the distance between the upper support block 203 and the lower support block 204, and further adjust the stiffness of the shock absorber 200.

[0082] In a further embodiment of the present invention, the shock absorber 200 further includes a spring (not shown in the figure), which is disposed between the upper support block 203 and the lower support block 204 and connected to the upper support block 203 and the lower support block 204 respectively.

[0083] According to the vehicle of the embodiment of the present utility model, the vehicle includes the suspension system 1000 mentioned above.

[0084] In the suspension system 1000, the shock absorber 200 and the linear motor 100 are designed in a split type, and the driving force between the two is transmitted through the driving medium, which can reduce the structural complexity of the shock absorber 200 and appropriately reduce the height dimension occupied by the shock absorber 200 in the vertical direction (i.e., the Z direction of the vehicle) when applied to the suspension system 1000, meeting the design requirements of the vehicle chassis (such as: skateboard chassis, i.e., non-load-bearing body). At the same time, the method of transmitting the driving force through the driving medium has good stability and fast response speed.

[0085] The linear motor 100 in the suspension system 1000 serves as a power source, and compresses the driving medium to provide power and damping for the lifting or lowering of the shock absorber 200. The linear motor 100 may be controlled by an ECU (Electronic Control Unit) of the vehicle.

[0086] When the linear motor 100 receives the mass sent by the ECU, the winding 21 is energized and a magnetic field is generated between the mover assembly 3 and the stator assembly 2. The magnetic field moves along the first direction to become a traveling wave magnetic field. The excitation magnetic field generated by the permanent magnet 34 in the mover assembly 3 interacts with the traveling wave magnetic field to generate an electromagnetic force. Under the action of the electromagnetic force, the mover assembly 3 can be driven to move relative to the stator assembly 2 along the first direction. Among them, the output characteristics of the linear motor 100 need to meet the requirements of the vehicle active suspension, that is, the active power output by the linear motor 100 is basically linearly related to the input current, so that the driving force output by the linear motor 100 can be controlled by controlling the magnitude of the current, which is conducive to improving the control accuracy of the suspension system 1000.

[0087] Furthermore, the driving medium can flow in both directions between the first regulating chamber 14 and the third regulating chamber 2011, and between the second regulating chamber 15 and the fourth regulating chamber 2012, so as to realize the linkage between the linear motor 100 and the shock absorber 200. When the driving medium in one regulating chamber in the linear motor 100 is compressed (that is, the volume of the regulating chamber is reduced), the regulating chamber supplies oil to another regulating chamber connected to it, and the volume of the other regulating chamber of the linear motor 100 increases, and the oil is returned.

[0088] At the same time, when the suspension system 1000 does not need the linear motor 100 to drive, the winding 21 is de-energized, and the driving member 202 can drive the mover assembly 3 to move axially relative to the stator assembly 2. The winding 21 cuts the magnetic field generated by the permanent magnet 34 and generates alternating current to power other equipment in the vehicle.

[0089] In the present application, the driving member 202 of the shock absorber 200 can reciprocate along the second direction, and the driving medium in the third regulating chamber 2011 and the fourth regulating chamber 2012 is respectively subjected to the extrusion force and the suction force, and the driving member 202 (i.e., the piston) only plays a role of separating the third regulating chamber 2011 and the fourth regulating chamber 2012, and is used to withstand the force of the driving medium acting on the surface of the plug body 2021, so that the structure of the shock absorber 200 is simple, the reliability of the shock absorber 200 can be improved, and the failure rate of the shock absorber 200 can be reduced.

[0090] When the vehicle is traveling on a road with high unevenness, the suspension system 1000 is subjected to a large impact of the road surface, and the road feeling fed back to the driver is strong. In order to meet the requirements of vehicle comfort, most of the road impact needs to be offset. The vehicle ECU can receive the pressure sent by the first pressure sensor 501 and the second pressure sensor 502 and analyze and process it, and send mass to the first pressure accumulator 401, the second pressure accumulator 402 and the linear motor 100 respectively to reduce the damping pressure in the pipeline (the first connecting pipe 301 and the second connecting pipe 302) and the current of the winding 21, thereby reducing the electromagnetic force of the linear motor 100, and the force of the mover assembly 3 in the first direction is also reduced. The driving medium can realize convection in different cavities in the first regulating cavity 14 and the second regulating cavity 15, and the convection friction of the driving medium in different cavities can reduce or offset the impact of road unevenness on the suspension system 1000, thereby improving driving comfort.

[0091] When the vehicle is traveling on a road with good road conditions (such as a highway), the vehicle's travel speed is high, and the overall stability is very important to the driver. At this time, the vehicle controller can increase the current in the linear motor 100 according to the vehicle speed and the pressure signals of the first pressure sensor 501 and the second pressure sensor 502, and increase the valve opening of the first pressure accumulator 401 and the second pressure accumulator 402, increase the oil flow in the pipeline, so that the oil pressure in the pipeline increases, the pressure of the third regulating chamber 2011 and the fourth regulating chamber 2012 in the shock absorber 200 is the same, and finally the force acting on the driving member 202 (i.e., the piston in the shock absorber 200) increases, so that the supporting force of the driving member 202 is increased, so as to enhance the adhesion of the tire to the ground and improve the handling stability of the whole vehicle.

[0092] It is understandable that when stronger handling stability is needed, the height of the shock absorber 200 can be greatly reduced to achieve a downward shift in the center of mass of the vehicle, reduce wind resistance, increase tire adhesion, and meet the handling requirements of higher vehicle speeds.

[0093] Thus, the force required by the shock absorber 200 can be adjusted and generated according to the vehicle's motion state and external active input, so that the vehicle is always in the best driving state of comfort and handling stability, and the vehicle has better controllability and safety, and can be applied to a variety of driving modes. At the same time, the suspension system 1000 can also recycle energy and convert kinetic energy into electrical energy for use by other electrical equipment in the vehicle, and the shock absorber 200 in the suspension system 1000 in the present application occupies a small space in the vertical direction (i.e., the Z direction of the vehicle), reducing the top space and the driving blind spot, meeting the design requirements of pedestrian protection, economy and chassis.

[0094] The following content should be integrated into the writing process as needed to explain the relevant content:

[0095] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0096] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0097] In the description of the present invention, "plurality" means two or more.

[0098] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0099] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A linear motor, characterized in that: include: case; A stator assembly (2), the stator assembly (2) being fixed to the housing; A mover assembly (3), the mover assembly (3) being movable relative to the stator assembly (2) along a first direction, and the mover assembly (3) defining a first regulating chamber (14) and a second regulating chamber (15) between the two ends of the mover assembly (3) and the housing respectively in the first direction, the first regulating chamber (14) and the second regulating chamber (15) being capable of being filled with a driving medium; The mover assembly (3) is movable along the first direction to adjust the volumes of the first adjustment chamber (14) and the second adjustment chamber (15).

2. The linear motor according to claim 1, characterized in that: The housing comprises: A shell body (11), wherein the stator assembly (2) is mounted on the shell body (11); a first housing (12), the first housing (12) being arranged at one end of the housing body (11) in the first direction, one end of the mover assembly (3) being arranged in the first housing (12) and defining the first regulating cavity (14) together with the first housing (12); A second housing (13), wherein the second housing (13) is arranged at the other end of the housing body (11) in the first direction, and the other end of the mover assembly (3) is arranged in the second housing (13) and defines a second regulating chamber (15) with the second housing (13).

3. The linear motor according to claim 2, characterized in that: The mover assembly (3) further includes: a first piston (31), the first piston (31) being arranged at one end of the mover assembly (3) and defining the first regulating chamber (14) together with the first housing (12); A second piston (32), the second piston (32) being arranged at the other end of the mover assembly (3) and defining the first regulating chamber (14) together with the second housing (13).

4. The linear motor according to claim 2, characterized in that: The first housing (12) is provided with a first port (121), and the first port (121) is in communication with the first regulating chamber (14); The second housing (13) is provided with a second port (131), and the second port (131) is in communication with the second regulating chamber (15).

5. The linear motor according to claim 4, characterized in that: The first port (121) is provided at an end of the first shell (12) away from the shell body (11) in the first direction; And / or, the second port (131) is provided at an end of the second shell (13) away from the shell body (11) in the first direction.

6. The linear motor according to claim 2, characterized in that: It also comprises a sealing member (4), wherein the sealing member (4) is arranged between the mover assembly (3) and the shell body (11) and is used to seal the mover assembly (3) and the shell body (11).

7. A suspension system, characterized in that: include: A linear motor, wherein the linear motor is a linear motor according to any one of claims 1 to 6; A shock absorber (200), the shock absorber (200) being suitable for being connected between a vehicle body and a vehicle axle, and the shock absorber (200) being provided with a third regulating chamber (2011) and a fourth regulating chamber (2012) whose volumes can be adjusted simultaneously, the third regulating chamber (2011) being in communication with the first regulating chamber (14), and the fourth regulating chamber (2012) being in communication with the second regulating chamber (15); The first regulating chamber (14) and the third regulating chamber (2011) are filled with a first driving medium, and the second regulating chamber (15) and the fourth regulating chamber (2012) are filled with a second driving medium.

8. The suspension system according to claim 7, characterized in that The shock absorber (200) comprises: A main body (201), wherein a cavity is formed in the main body (201); A driving member (202), wherein at least a portion of the driving member (202) is disposed in the cavity and divides the cavity into the third regulating cavity (2011) and the fourth regulating cavity (2012) arranged along the second direction, and the driving member (202) can move relative to the main body (201) along the second direction.

9. The suspension system according to claim 8, characterized in that The driving member (202) is disposed through the main body (201), and the shock absorber (200) further comprises a first mounting frame (2013), the first mounting frame (2013) being connected to a portion of the driving member (202) located outside the main body (201), and the first mounting frame (2013) can be connected to the vehicle body; And / or, the shock absorber (200) further comprises a second mounting frame (2014), wherein the second mounting frame (2014) is connected to the main body (201) and is suitable for being connected and fixed to the vehicle axle.

10. The suspension system according to claim 7, characterized in that Also includes: A first connecting pipe (301), the first connecting pipe (301) being connected between the first regulating chamber (14) and the third regulating chamber (2011); And / or, a second connecting pipe (302), wherein the second connecting pipe (302) is connected between the second regulating chamber (15) and the fourth regulating chamber (2012).

11. The suspension system according to claim 7, characterized in that: Also includes: A first pressure accumulator (401), the first pressure accumulator (401) being connected in series between the first regulating chamber (14) and the third regulating chamber (2011); And / or, a second pressure accumulator (402), wherein the second pressure accumulator (402) is connected in series between the second regulating chamber (15) and the fourth regulating chamber (2012).

12. A vehicle, characterized in that: Comprising a suspension system according to any one of claims 7-11.

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