Linear motor, suspension system and vehicle

Abstract

The invention discloses a linear motor, a suspension system and a vehicle. The linear motor comprises a shell; 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 present invention relates to the technical field of vehicles, and in particular to a linear motor, a suspension system 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. Summary of the invention

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

[0004] The invention also provides a suspension system.

[0005] The present invention also provides a vehicle.

[0006] According to the first aspect of the present invention, a linear motor includes a housing; a stator assembly, which is fixed to the housing; and 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 present invention, 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 invention, 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 present invention, the mover assembly further includes: a first piston, which is arranged at one end of the mover assembly and defines the first regulating chamber together 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 together with the second housing.

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

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

[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 second aspect of the present invention, the suspension system includes: a linear motor, which is the linear motor mentioned above; a shock absorber, which is suitable for being connected between the vehicle body and the axle, and 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 present invention, the shock absorber includes: a main body, in which a cavity is formed; 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 present invention, 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 present invention comprises 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 be obvious from the following description, or will be learned through 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 a first embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of a linear motor according to a first embodiment of the present invention;

[0024] Figure 3 is an exploded view of a linear motor according to a first embodiment of the present invention;

[0025] Figure 4 is a schematic structural diagram of a shock absorber according to a first embodiment of the present invention;

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

[0027] Figure 6 is a schematic diagram of an electromagnetic vibration absorber according to a second embodiment of the present invention;

[0028] Figure 7 yes Figure 6 An axial cross-sectional view of the electromagnetic vibration absorber shown in ;

[0029] Figure 8 yes Figure 7 A partial enlarged view of the cooling structure shown in FIG.

[0030] Fig. 9 yes Figure 8 The enlarged view of point A in the middle;

[0031] Fig.10 is a schematic diagram of a vehicle according to a second embodiment of the present invention;

[0032] Fig.11 is a schematic diagram of an electromagnetic vibration absorber according to a third embodiment of the present invention;

[0033] Fig.12 yes Fig.11 An axial cross-sectional view of the electromagnetic vibration absorber shown in ;

[0034] Fig.13 yes Fig.12 A partial enlarged view of the matching part of the guide rod and the linear bearing group shown in;

[0035] Fig.14 yes Fig.11 A radial cross-sectional view of the mover housing and the stator movable rod of the electromagnetic damper shown in ;

[0036] Fig.15 yes Fig.14 The enlarged view of point A in the middle;

[0037] Fig.16 is a schematic diagram of a vehicle according to a third embodiment of the present invention;

[0038] Fig.17 is a schematic diagram of a shock absorber according to a fourth embodiment of the present invention;

[0039] Fig.18 yes Fig.17 A cross-sectional view of the shock absorber shown in ;

[0040] Fig.19 yes Fig.18 A partial cross-sectional view of the shock absorber shown in ;

[0041] Fig. 20 yes Fig.18 Another partial cross-sectional view of the shock absorber shown in ;

[0042] Fig.21 yes Fig.18 The measurement logic diagram of the shock absorber shown;

[0043] Fig. 22 is a schematic structural diagram of a cylindrical linear motor in a fifth embodiment of the present invention;

[0044] Fig.23 is a partial enlarged view of a cylindrical linear motor in a fifth embodiment of the present invention;

[0045] Fig.24 is a schematic structural diagram of a cylindrical linear motor in a sixth embodiment of the present invention;

[0046] Fig.25 It is a schematic structural diagram of a plate-type linear motor in the seventh embodiment of the present invention. DETAILED DESCRIPTION

[0047] Embodiments of the present invention are described in detail below, examples of which 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.

[0048] Reference below Figure 1-Figure 5 A linear motor 100, a suspension system 1000, and a vehicle according to a first embodiment of the present invention are described.

[0049] The linear motor 100 according to the embodiment of the present invention includes a housing, a stator assembly 2 and a mover assembly 3 .

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 .

[0057] 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.

[0058] Reference Figure 2 The 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] In some embodiments of the present invention, 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.

[0064] 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.

[0065] 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.

[0066] 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 .

[0067] 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 discharge or flow into the regulating chamber, thereby improving the power output effect of the linear motor 100.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] like Figure 2As 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.

[0072] 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.

[0073] The suspension system 1000 according to the embodiment of the present invention includes the linear motor 100 and the shock absorber 200 described above.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] In some embodiments of the present invention, the shock absorber 200 includes a main body 201 and a driving member 202 .

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] In some embodiments of the present invention, 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.

[0086] 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.

[0087] 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 .

[0088] 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.

[0089] 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 .

[0090] 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.

[0091] 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.

[0092] 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.

[0093] According to the embodiment of the present invention, the vehicle includes the suspension system 1000 described above.

[0094] 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.

[0095] 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 can be controlled by an ECU (Electronic Control Unit) of the vehicle.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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 are respectively subjected to the extrusion force and the suction force. The driving member 202 (i.e., the piston) only serves to separate 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.

[0100] 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 surface 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 tube 301, the second connecting tube 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 surface unevenness on the suspension system 1000, thereby improving driving comfort.

[0101] 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.

[0102] 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.

[0103] 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 recover 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.

[0104] Reference below Figure 6-Figure 10 An electromagnetic absorber 600 according to a second embodiment of the present invention will be described.

[0105] like Figure 7 As shown, the electromagnetic vibration absorber 600 according to the embodiment of the present invention includes: a mover housing 26 , a stator movable rod 16 and a cooling structure 36 .

[0106] Specifically, the movable space 261 is formed in the movable housing 26, the stator movable rod 16 is inserted into the movable space 261, at least one of the stator movable rod 16 and the movable housing 26 is provided with a winding coil 41, and the winding coil 41 is located in the movable space 261, the cooling structure 36 is connected to the movable housing 26, and the cooling structure 36 is used to dissipate heat from the movable space 261.

[0107] Therefore, by setting up the cooling structure 36, the active space 261 can be cooled during the operation of the electromagnetic shock absorber 600, that is, the winding coil 41 can be cooled, thereby reducing the temperature of the winding coil 41 and reducing the power consumption of the electromagnetic shock absorber 600. The reduction in the temperature of the winding coil 41 can avoid a reduction in the output force of the electromagnetic shock absorber 600, thereby meeting the shock absorbing force requirements of the vehicle 2000.

[0108] For example Figure 7 As shown, the electromagnetic vibration absorber 600 includes a mover housing 26 , a stator movable rod 16 and a cooling structure 36 .

[0109] Specifically, Figure 7 As shown, a movable space 261 is formed in the movable housing 26, and the stator movable rod 16 is inserted into the movable space 261, that is, the movable housing 26 is sleeved on the stator movable rod 16, and the stator movable rod 16 and the movable housing 26 can move relative to each other in the axial direction, wherein at least one of the outer peripheral wall of the stator movable rod 16 and the inner peripheral wall of the movable housing 26 is provided with a winding coil 41.

[0110] For example, the outer circumferential wall of the stator movable rod 16 and the inner circumferential wall of the movable housing 26 are both provided with winding coils 41, or one of the outer circumferential wall of the stator movable rod 16 and the inner circumferential wall of the movable housing 26 is provided with a winding coil 41 and the other is provided with a permanent magnet group 42, which is not limited here.

[0111] For example, the winding coil 41 is wound around the outer peripheral wall of the stator movable rod 16, and the permanent magnet group 42 is installed on the inner peripheral wall of the mover housing 26, or the winding coil 41 is wound around the inner peripheral wall of the mover housing 26, and the permanent magnet group 42 is installed on the outer peripheral wall of the stator movable rod 16.

[0112] Among them, the winding coil 41 and the permanent magnet group 42 are arranged opposite to each other in the radial direction of the stator movable rod 16, and there is a uniform matching gap between the winding coil 41 and the permanent magnet group 42. It should be noted that the electromagnetic shock absorber 600 can be applied to a variety of equipment that requires vibration reduction. For example, the electromagnetic shock absorber 600 can be applied to the active suspension system of the vehicle 2000, and when the electromagnetic shock absorber 600 is applied to the vehicle 2000, the axial upper end of the stator movable rod 16 is connected to the vehicle body, and the axial lower end of the mover housing 26 is connected to the wheel. After the winding coil 41 is energized, an electromagnetic field is generated. After energization, the magnetic field formed by the winding coil 41 interacts with the magnetic field of the permanent magnet group 42 to generate an action force and a reaction force, that is, the thrust of the shock absorber. The magnetic field force gives the mover housing 26 an approximate up and down direction (such as Figure 7 The force acting on the movable housing 26 and the stator movable rod 16 in the axial direction can make a linear reciprocating motion in the axial direction.

[0113] It is worth noting that the direction of the magnetic field is radial with the interface of the winding coil 41 as the origin, the magnitude of the magnetic field can be controlled by the magnitude of the input current, and the positive and negative directions of the magnetic field can be controlled by adjusting the positive and negative current.

[0114] Therefore, the vibration reduction and buffering effect on the wheel can be achieved through the relative movement of the mover housing 26 and the stator movable rod 16 in the axial direction, so as to meet the vibration reduction force requirements of the vehicle 2000.

[0115] It should be noted that during the operation of the electromagnetic shock absorber 600, the winding coil 41 is constantly heating up, and temperature is a key indicator that affects the resistance of the winding coil 41. When the temperature rises, the power consumption of the electromagnetic shock absorber 600 will increase, and the resistance of the winding coil 41 will increase, the working current will decrease, and the magnetic field strength will decrease, resulting in a decrease in the output force of the electromagnetic shock absorber 600, thereby failing to meet the shock absorbing force requirements of the vehicle 2000.

[0116] Therefore, in the present invention, a cooling structure 36 is provided to dissipate heat from the active space 261, that is, to dissipate heat from the components in the active space 261, such as the winding coil 41, thereby reducing the temperature of the winding coil 41 and reducing the power consumption of the electromagnetic shock absorber 600. The reduction in the temperature of the winding coil 41 can prevent the resistance of the winding coil 41 from increasing, thereby preventing the working current of the winding coil 41 from decreasing. In this way, it can ensure that the winding coil 41 generates a magnetic field of sufficient strength, thereby preventing the output force of the electromagnetic shock absorber 600 from decreasing, so as to meet the vibration reduction force requirements of the vehicle 2000.

[0117] According to the electromagnetic shock absorber 600 of the embodiment of the present invention, by providing a cooling structure 36, the active space 261 can be cooled during the operation of the electromagnetic shock absorber 600, that is, the winding coil 41 can be cooled, thereby reducing the temperature of the winding coil 41 and reducing the power consumption of the electromagnetic shock absorber 600. The reduction in the temperature of the winding coil 41 can avoid a reduction in the output force of the electromagnetic shock absorber 600, thereby meeting the shock absorbing force requirements of the vehicle 2000.

[0118] In some embodiments, the cooling structure 36 is configured as a rotating blade 37 , which is rotatably matched with the rotor housing 26 in the circumferential direction and relatively fixed in the axial direction. The rotating blade 37 is rotatably sleeved outside the stator movable rod 16 .

[0119] Thus, the rotating blades 37 are fixed to the movable housing 26 and can rotate circumferentially relative to the movable housing 26, so that when the movable housing 26 moves axially relative to the stator movable rod 16, the rotating blades 37 can rotate relative to the stator movable rod 16 while moving axially with the stator movable rod 16.

[0120] For example, the rotating blades 37 and the stator movable rod 16 can be matched in a ball screw manner to ensure that the rotating blades 37 can move axially with the stator movable rod 16 and rotate relative to the stator movable rod 16. Of course, the rotating blades 37 and the stator movable rod 16 can also be matched in other ways that convert linear motion into curved motion, which is not limited here.

[0121] Therefore, under the traction of the force of the axial movement of the rotor housing 26, the rotating blades 37 can rotate while moving axially, that is, the rotating blades 37 finally make a spiral up / down motion, thereby driving the air flow in the activity space 261, thereby reducing the temperature in the activity space 261, that is, reducing the operating temperature of the components (such as the winding coil 41) in the activity space 261.

[0122] In this way, on the one hand, the heat dissipation of the electromagnetic shock absorber 600 can be achieved to avoid the reduction of the output force of the electromagnetic shock absorber 600, thereby meeting the vibration reduction force requirements of the vehicle 2000; on the other hand, the rotation of the rotating blades 37 does not require additional electric energy input, and the rotation of the rotating blades 37 can be driven by the axial movement of the mover housing 26 during the movement of the vehicle 2000, thereby making full use of the kinetic energy generated by the electromagnetic shock absorber 600 when it is working.

[0123] In some embodiments, Figure 7 As shown, the stator movable rod 16 includes a main body portion 17 and a connecting portion 18 .

[0124] The connecting portion 18 is connected to the main body portion 17 along the axial direction. The outer diameter of the main body portion 17 is larger than the outer diameter of the connecting portion 18 . The rotating blades 37 are sleeved outside the connecting portion 18 .

[0125] Therefore, by setting the outer diameter of the connecting portion 18 to be smaller than the outer diameter of the main body 17, so that the space between the connecting portion 18 and the movable housing 26 is larger, the difficulty of installing the rotating blades 37 is reduced, and the rotating blades 37 and the winding coils 41 are respectively fixed to the connecting portion 18 and the main body 17 for reasonable arrangement to avoid interference between the rotating blades 37 and the winding coils 41. At the same time, in the axial direction of the stator movable rod 16, the winding coils 41 are opposite to the rotating blades 37. In this way, when the rotating blades 37 rotate, they can drive the air in the movable space 261 to flow to form an airflow blowing toward the winding coils 41, thereby quickly reducing the temperature of the winding coils 41.

[0126] In some embodiments, the winding coil 41 is wound around the outer peripheral wall of the main body 17, so that the connection stability between the winding coil 41 and the main body 17 can be enhanced, and it is convenient to save installation space and reduce the occupation of the active space 261, making the structure of the electromagnetic shock absorber 600 more compact.

[0127] Furthermore, if Figure 8 and Fig. 9 As shown, the rotating blade 37 is provided with a ball 371 , and the outer peripheral wall of the connecting portion 18 is provided with a spiral groove 181 . When the ball 371 slides along the spiral groove 181 , it is suitable for driving the rotating blade 37 to rotate.

[0128] In this way, the connection stability between the rotating blade 37 and the connecting part 18 can be enhanced to avoid the rotating blade 37 from being separated from the connecting part 18, and by arranging the ball 371 and the spiral groove 181, the rotating blade 37 and the connecting part 18 can be matched in the form of a ball 371 screw, so that when the movable housing 26 moves axially relative to the stator movable rod 16, the rotating blade 37 is pulled by the force of the axial movement of the movable housing 26. The rotating blade 37 can rotate while moving axially along the connecting part 18, that is, the rotating blade 37 finally makes a spiral up / down motion, thereby driving the air flow in the active space 261, which has the effect of reducing the temperature in the active space 261, that is, reducing the working temperature of the components (such as the winding coil 41) in the active space 261.

[0129] In some embodiments, Figure 7 As shown, the activity space 261 includes a first activity space 2611 and a second activity space 2612, which are respectively located on both sides of the axial direction of the main body 17, and the main body 17 is provided with a ventilation channel 171, which is connected between the first activity space 2611 and the second activity space 2612.

[0130] It should be noted that, in the axial direction of the main body 17, the ventilation duct 171 is arranged at the part of the main body 17 that is not opposite to the connecting part 18, and the connecting part 18 can be located in the first active space 2611, that is, the rotating blade 37 is located in the first active space 2611, and the second active space 2612 can be provided with components such as the position sensor 74 and the position sensor grating 73. During the operation of the electromagnetic shock absorber 600, components such as the position sensor 74 and the position sensor grating 73 will be affected by the high temperature of the winding coil 41, thereby affecting its accuracy.

[0131] Therefore, by setting the ventilation duct 171, when the rotating blade 37 rotates, the air in the first active space 2611 and the air in the second active space 2612 can flow to each other through the ventilation duct 171, thereby facilitating the heat dissipation of components such as the position sensor 74 and the position sensor grating 73 in the second active space 2612, so that they can be in a temperature-stable working environment.

[0132] Optionally, the ventilation hole 171 extends along the axial direction of the body 17. Thus, the ventilation hole 171 can directly connect the first activity space 2611 with the second activity space 2612, thereby increasing the mutual flow rate of the air in the first activity space 2611 and the air in the second activity space 2612.

[0133] Optionally, a plurality of ventilation holes 171 may be provided, and the plurality of ventilation holes 171 may be spaced apart and distributed in the radial direction and / or circumferential direction of the main body 17 to increase the air flow rate.

[0134] In some embodiments, Figure 8 As shown, the rotating blade 37 is located in the first active space 2611 , and in the axial direction of the main body 17 , the rotating blade 37 is spaced apart from the main body 17 .

[0135] As a result, when the rotating blade 37 rotates, the air in the first active space 2611 and the air in the second active space 2612 can flow to each other through the ventilation duct 171, thereby facilitating the heat dissipation of components such as the position sensor 74 and the position sensor grating 73 in the second active space 2612, so that they can be in a temperature-stable working environment. At the same time, interference between the rotating blade 37 and the main body 17 can be avoided.

[0136] In some embodiments, Figure 7 As shown, the mover housing 26 includes an outer shell 27 and a mounting shell 22 . The mounting shell 22 is connected to the outer shell 27 to define a first activity space 2611 . The rotating blade 37 is rotatably mounted on the mounting shell 22 .

[0137] Thus, by providing the mounting shell 22, the mounting shell 22 and the outer shell 27 can jointly constitute the mover housing 26, and the rotating blade 37 can be rotatably mounted on the mounting shell 22, so that during actual assembly, the rotating blade 37 can be first mounted on the mounting shell 22, so that the mounting shell 22 can be used as a fixing bracket for the rotating blade 37, and then the mounting shell 22 is mounted on the outer shell 27 to jointly constitute the mover housing 26. In this way, the rotating blade 37 and the outer shell 27 can share the mounting shell 22, thereby facilitating the reduction of the difficulty of assembling the rotating blade 37.

[0138] The mounting shell 22 can be fixed by snapping with the outer shell 27 through a plurality of radially distributed buckles, so as to reduce the difficulty of loading and unloading the mounting shell 22 and facilitate the maintenance of the rotating blades 37 by disassembling the mounting shell 22 at a later time.

[0139] Of course, the connection method between the mounting shell 22 and the outer shell 27 may also be plug-in or bolt-fitting, which is not limited here.

[0140] Optionally, the outer diameter of the mounting shell 22 is smaller than or equal to the outer diameter of the outer shell 27 .

[0141] It should be noted that in the electromagnetic damper 600 , the outer side of the mover housing 26 is sleeved with a coil spring 60 . Therefore, by setting the outer diameter of the mounting shell 22 to be smaller than or equal to the outer diameter of the outer shell 27 , interference between the mounting shell 22 and the coil spring 60 can be avoided.

[0142] Combine the following Figure 6-Figure 9 A specific embodiment of the electromagnetic shock absorber 600 of the embodiment of the present invention is described as being applied to an active suspension system of a vehicle 2000:

[0143] The electromagnetic absorber 600 is electrically connected to the ECU (Electronic Control Unit) of the vehicle 2000, and Figure 6 As shown, the upper end of the electromagnetic shock absorber 600 is provided with a first fixing bolt 56, and the upper end of the electromagnetic shock absorber 600 is connected to the vehicle frame or body as a whole through three first fixing bolts 56, and the lower end of the electromagnetic shock absorber 600 is connected to the transmission shaft of the wheel.

[0144] Specifically, Figure 7 As shown, the electromagnetic shock absorber 600 includes a stator movable rod 16, a mover housing 26, a cooling structure 36, a winding coil 41, a permanent magnet group 42, a shock absorber tower top 51, a dust cover 52, a spring upper base 53, an outer protective cover 54, a connecting flange 55, a coil spring 60, a spring lower base 71, a lower jump limit shock absorber block 72, a position sensor grating 73, a position sensor 74, an upper jump limit shock absorber block 75, a sensor mounting base 76, and a shock absorber bracket 77.

[0145] Specifically, Figure 7 As shown, the outer protective cover 54 is connected to the mover housing 26 and is sleeved on the outside of the mover housing 26. The mover housing 26 is sleeved on the lower half of the stator movable rod 16. The upper half of the stator movable rod 16 extends out of the mover housing 26 to be connected to the shock absorber tower top 51, and a connecting flange 55 is sleeved on the upper end of the stator movable rod 16. The connecting flange 55 and the upper end of the stator movable rod 16 are press-fitted together by interference fit and are connected to the shock absorber tower top 51, so as to enhance the connection stability between the stator movable rod 16 and the shock absorber tower top 51.

[0146] Among them, one of the outer circumferential wall of the stator movable rod 16 and the inner circumferential wall of the movable housing 26 is provided with a winding coil 41 and the other is provided with a permanent magnet group 42, for example, the winding coil 41 is wound around the outer circumferential wall of the stator movable rod 16, and the permanent magnet group 42 is installed on the inner circumferential wall of the movable housing 26, or the winding coil 41 is wound around the inner circumferential wall of the movable housing 26, and the permanent magnet group 42 is installed on the outer circumferential wall of the stator movable rod 16.

[0147] The winding coil 41 and the permanent magnet group 42 are arranged opposite to each other in the radial direction of the stator movable rod 16, and there is a uniform matching gap between the winding coil 41 and the permanent magnet group 42. When the winding coil 41 is energized, an electromagnetic field is generated. After the power is turned on, the magnetic field formed by the winding coil 41 interacts with the magnetic field of the permanent magnet group 42 to generate an action force and a reaction force, that is, the thrust of the shock absorber. The magnetic field force gives the mover housing 26 an approximate up and down direction (such as Figure 7The force acting on the movable housing 26 and the stator movable rod 16 in the axial direction can make a linear reciprocating motion in the axial direction.

[0148] The cooling structure 36 is constructed as a rotating blade 37, which is arranged on the rotor housing 26, and the cooling blade and the stator movable rod 16 are matched in a ball screw mechanism. During the operation of the vehicle 2000, the rotor housing 26 moves up and down, driving the rotating blade 37 to move up and down together. At the same time, since the rotating blade 37 and the stator movable rod 16 are a ball 371 screw matching structure, the rotating blade 37 is forced to rotate synchronously during the up and down movement under the traction of the up and down force of the rotor housing 26, so the rotating blade 37 finally makes a spiral up / down motion, and the rotation of the rotating blade 37 drives the flow of air inside the first movable space 2611.

[0149] At the same time, since the main body 17 is provided with a plurality of ventilation channels 171 running through the upper and lower parts, the first active space 2611 and the second active space 2612 can be connected. Driven by the rotating blades 37, the air inside the first active space 2611 and the second active space 2612 is exchanged with the outside world. The flow of air brings out the heat generated inside the active space 261 in time, which can effectively reduce the working temperature of the winding coil 41, make the resistance value of the winding coil 41 in a stable state, and ensure the normal output of the magnetic field force.

[0150] Among them, the size and installation position of the rotating blade 37 need to be designed and arranged in combination with the upper and lower limit spaces of the electromagnetic shock absorber 600 to ensure that when the electromagnetic shock absorber 600 moves up and down to the limit position, there will be no interference and collision with the rotating blade 37; in addition, this passive heat dissipation method does not require additional electric energy input. The rotation of the rotating blade 37 can be driven by the up and down movement of the mover housing 26 during the movement of the vehicle 2000, and part of the potential energy of the up and down movement of the vehicle 2000 is converted into the kinetic energy of the rotating blade 37, thereby improving the energy utilization of the system and reducing the internal temperature of the electromagnetic shock absorber 600, thereby ensuring the normal operation of the electromagnetic shock absorber 600.

[0151] Furthermore, the spring upper base 53 is bonded together with one end of the shock absorber tower top 51 facing the mover housing 26, and the outer protective cover 54 passes through the outer protective cover 54 through the second fixing bolts 57 distributed in the radial direction to be connected to the spring upper base 53 to enhance the connection stability between the two, and a spring lower base 71 is also sleeved on the mover housing 26, and the coil spring 60 is sleeved on the mover housing 26 and located between the mover housing 26 and the outer protective cover 54, so that the coil spring 60 can be protected by the outer protective cover 54 and the damage of the coil spring 60 can be reduced.

[0152] Alternatively, if Figure 6As shown, a square hole is opened in the middle of the outer protective cover 54 to facilitate air flow and heat dissipation of the electromagnetic shock absorber 600, wherein the square hole can be covered with multiple layers of annular filter elements to prevent external dust or muddy water from entering the electromagnetic shock absorber 600 and causing damage to the working components.

[0153] Among them, one end of the coil spring 60 (such as Figure 7 The upper end of the coil spring 60 (as shown in FIG. Figure 7 The lower end of the spring 2000) is against the lower spring base 71, and the upper spring base 53 and / or the lower spring base 71 are provided with a rubber pad at one end close to the coil spring 60 to reduce the wear and abnormal noise of the coil spring 60 during movement. In this way, during the movement of the vehicle 2000, the electromagnetic shock absorber 600 can jump up and down to compress the coil spring 60 to achieve the function of reducing the impact force of the vehicle 2000 on the ground together with the internal components of the electromagnetic shock absorber 600.

[0154] A limit-down shock-absorbing block 72 is provided at the lower end of the outer protective cover 54. The limit-down shock-absorbing block 72 is used for limiting shock absorption when the electromagnetic shock absorber 600 reaches a limit of downward jump when the wheel jumps up or falls into a pothole.

[0155] At the same time, the sensor mounting base 76 and the upper jump limit buffer block 75 are also fixed as a whole with the lower end of the mover housing 26 through the connecting bolts 78; wherein the position sensor 74 is installed on the sensor mounting base 76, and the position sensor grating 73 is installed on the inner wall of the center hole at the lower end of the stator movable rod 16, and a cylindrical groove of a certain depth is opened at the bottom of the stator movable rod 16 to accommodate the axial movement of the position sensor 74, and the position sensor 74 cooperates with the position sensor grating 73 fixed on the inner wall of the center hole at the bottom of the stator movable rod 16.

[0156] The electromagnetic vibration absorber 600 is arranged in the vertical direction ( Figure 7 During the bouncing process (in the axial direction), the position sensor 74 moves up and down synchronously with the sensor mounting base 76. The position sensor 74 can identify the bouncing condition of the wheel through the change of the grating position of the position sensor grating 73, and transmit the parameters to the ECU in time, so that the ECU can give corresponding adjustment instructions in time based on other sensor parameters. The maximum compression height of the upper jump limit shock absorber 75 is higher than the upper end of the sensor mounting base 76, ensuring that the bottom of the stator movable rod 16 will not contact and collide with the sensor mounting base 76 after the shock absorber block is fully compressed at the upper jump limit, thereby avoiding damage to the stator movable rod 16 or other components.

[0157] During the up and down bouncing of the electromagnetic shock absorber 600, the position sensor 74 moves up and down synchronously with the mover housing 26 through the sensor mounting base 76. At this time, the position sensor 74 can identify the bouncing condition of the wheel through the change in the position of the position sensor grating 73, and transmit the parameters to the ECU in time, so that the ECU can give corresponding adjustment instructions in time based on other sensor parameters. The limit compression height of the upper jump limit buffer block 75 is higher than the upper end of the sensor mounting base 76, so as to ensure that the bottom of the stator movable rod 16 (such as Figure 7 The lower end of the stator 10 will not come into contact with the sensor mounting base 76, thereby avoiding damage to the stator movable rod 16 or other components.

[0158] In actual use, when the vehicle 2000 is running, the sensor group recognizes the change in road conditions and transmits the signal to the ECU. The ECU changes the direction and size of the magnetic field of the electromagnetic shock absorber by adjusting the input current parameters of the winding coil 41 of the electromagnetic shock absorber 600 according to the actual conditions of the road surface, and further realizes real-time adjustment of the output thrust of the electromagnetic shock absorber 600. Finally, by controlling the thrust size and direction of the shock absorber, the impact force of the road on the vehicle 2000 when the operating conditions of the vehicle 2000 change is reduced, so that the operating state of the vehicle 2000 can be maintained as stable as possible, thereby improving the driving stability of the vehicle 2000 and the comfort of the driver and passengers.

[0159] It should be noted that the above arrangement and installation positions of the multiple components in the electromagnetic vibration absorber 600 are only a preferred embodiment and do not represent a limitation thereto. For example, the cooling structure 36 of the electromagnetic vibration absorber 600 of the present invention can be applied to all electromagnetic vibration absorbers 600 of linear motors of open structures (plate type, cylindrical type, polygonal column type, etc.).

[0160] In addition, the type of spring of the electromagnetic shock absorber 600 (coil spring 60 or air spring, etc.), the layout of the spring (upper, middle, lower), the coordination between the stator and the mover (the winding coil 41 is on the mover housing 26, the permanent magnet group 42 is on the stator movable rod 16, or the winding coil 41 is on the stator movable rod 16, the permanent magnet group 42 is on the mover housing 26), the limiting structure (upper and lower limits, internal and external limits, etc.), and the layout and type of the position sensor 74 will not affect the adaptation of this type of cooling structure 36.

[0161] The present invention also provides a vehicle 2000 .

[0162] like Fig.10 As shown, according to an embodiment of the present invention, an electromagnetic vibration absorber 600 includes any one of the above embodiments.

[0163] According to the vehicle 2000 of the embodiment of the present invention, its electromagnetic shock absorber 600 is capable of dissipating heat from the activity space 261, that is, dissipating heat from the winding coil 41, during the operation of the electromagnetic shock absorber 600 by providing a cooling structure 36, thereby reducing the temperature of the winding coil 41 and reducing the power consumption of the electromagnetic shock absorber 600. The reduction in the temperature of the winding coil 41 can avoid a reduction in the output force of the electromagnetic shock absorber 600, thereby meeting the shock absorbing force requirements of the vehicle 2000.

[0164] Reference below Figure 11-Figure 16 An electromagnetic absorber 700 according to a third embodiment of the present invention will be described.

[0165] like Fig.12 As shown, the electromagnetic vibration absorber 700 according to the embodiment of the present invention includes: a stator movable rod 80, a mover housing 82 and a guide assembly 83.

[0166] Specifically, the movable housing 82 is sleeved outside the stator movable rod 80, and the movable housing 82 and the stator movable rod 80 can move relative to each other. The guide assembly 83 is arranged between the movable housing 82 and the stator movable rod 80. The movable housing 82 and the stator movable rod 80 are guided and matched by the guide assembly 83. The guide assembly 83 is a plurality of groups and is spaced apart and distributed in the circumferential direction of the stator movable rod 80.

[0167] In this way, the stiffness of the electromagnetic shock absorber 700 can be enhanced, so that the electromagnetic shock absorber 700 can withstand greater lateral forces, especially when the road conditions are bad, the electromagnetic shock absorber 700 can withstand greater lateral forces, thereby ensuring that the electromagnetic shock absorber 700 always maintains linear reciprocating motion, which is beneficial to improving the output force of the electromagnetic shock absorber 700 and meeting the shock absorbing force requirements of the vehicle 3000.

[0168] For example Fig.12 As shown, the electromagnetic vibration absorber 700 includes a stator movable rod 80 , a mover housing 82 and a guide assembly 83 .

[0169] Specifically, Fig.12 As shown, the mover housing 82 is sleeved on the stator movable rod 80, and the stator movable rod 80 and the mover housing 82 can move relative to each other in the axial direction, wherein a winding coil 86 and a permanent magnet group 87 are also provided between the stator movable rod 80 and the mover housing 82, and one of the outer circumferential wall of the stator movable rod 80 and the inner circumferential wall of the mover housing 82 is provided with the winding coil 86 and the other is provided with the permanent magnet group 87, for example, the winding coil 86 is wound around the outer circumferential wall of the stator movable rod 80, and the permanent magnet group 87 is installed on the inner circumferential wall of the mover housing 82, the winding coil 86 and the permanent magnet group 87 are arranged opposite to each other in the radial direction of the stator movable rod 80, and there is a uniform fitting gap between the winding coil 86 and the permanent magnet group 87.

[0170] It should be noted that the electromagnetic shock absorber 700 can be applied to a variety of equipment that requires vibration reduction. For example, the electromagnetic shock absorber 700 can be applied to the active suspension system of the vehicle 3000. When the electromagnetic shock absorber 700 is applied to the vehicle 3000, the axial upper end of the stator active rod 80 is connected to the vehicle body, the axial lower end of the mover housing 82 is connected to the wheel, and the winding coil 86 generates an electromagnetic field after being energized. After being energized, the magnetic field formed by the winding coil 86 interacts with the magnetic field of the permanent magnet group 87 to generate an action force and a reaction force, that is, the thrust of the shock absorber. The magnetic field force gives the mover housing 82 an approximate up and down direction (such as Fig.11 The force acting on the movable housing 82 and the stator movable rod 80 is applied in the axial direction to enable the movable housing 82 and the stator movable rod 80 to perform linear reciprocating motion in the axial direction.

[0171] It is worth noting that the direction of the magnetic field is radial with the interface of the winding coil 86 as the origin. The magnitude of the magnetic field can be controlled by the magnitude of the input current, and the positive and negative directions of the magnetic field can be controlled by adjusting the positive and negative current.

[0172] Therefore, the vibration reduction and buffering effect on the wheel can be achieved through the relative movement of the movable housing 82 and the stator movable rod 80 in the axial direction, so as to meet the vibration reduction force requirements of the vehicle 3000.

[0173] It should be noted that the electromagnetic shock absorber 700 of the vehicle 3000 cannot withstand large lateral forces (forces whose direction intersects with the axial direction) during operation. Especially when the road conditions are bad, the electromagnetic shock absorber 700 cannot withstand greater lateral forces, which causes the electromagnetic shock absorber 700 to tilt and cannot always maintain linear reciprocating motion along the axial direction, thereby reducing the output force of the electromagnetic shock absorber 700 and failing to meet the shock absorbing force requirements of the vehicle 3000.

[0174] In the related art, in order to enable the electromagnetic shock absorber 700 to withstand a large lateral force, the diameter of the stator movable rod 80 is usually made very large to improve the stiffness of the electromagnetic shock absorber 700, so that the electromagnetic shock absorber 700 can withstand the lateral force during operation. However, such a setting will cause the stator movable rod 80 to be heavier, that is, the weight of the electromagnetic shock absorber 700 is increased, which is not conducive to the lightweight design of the electromagnetic shock absorber 700. In addition, the stator movable rod 80 with a larger diameter will occupy too much internal space of the mover housing 82, resulting in a significant reduction in the arrangement space of the winding coil 86 and the permanent magnet group 87, that is, the number of stator windings and permanent magnet groups 87 is reduced, thereby reducing the output force of the electromagnetic shock absorber 700, resulting in it being unable to meet the vibration reduction force requirements of the vehicle 3000.

[0175] Therefore, in the present invention, multiple sets of guide components 83 are arranged between the movable housing 82 and the stator movable rod 80, and the movable housing 82 and the stator movable rod 80 are guided and matched by the multiple sets of guide components 83, and the multiple sets of guide components 83 are spaced apart and distributed in the circumferential direction of the stator movable rod 80.

[0176] In this way, by setting the guide component 83, the movable housing 82 and the stator movable rod 80 can be guided and matched by the guide component 83 to enhance the stability of the relative movement of the stator movable rod 80 and the movable housing 82, and multiple groups of guide components 83 are spaced and distributed in the circumferential direction of the stator movable rod 80, so that the electromagnetic shock absorber 700 can have stronger rigidity and better lateral stability, so that the electromagnetic shock absorber 700 can withstand greater lateral force. In this way, there is no need to increase the diameter of the stator movable rod 80, which can avoid the stator movable rod 80 occupying too much space in the movable housing 82, and can ensure that the winding coil 86 and the permanent magnet group 87 have sufficient layout space, which is beneficial to improve the output force of the electromagnetic shock absorber 700, so that it can meet the vibration reduction force requirements of the vehicle 3000.

[0177] According to the electromagnetic shock absorber 700 of the embodiment of the present invention, by arranging a plurality of guide assemblies 83 spaced apart in the circumferential direction of the stator movable rod 80, the stiffness of the electromagnetic shock absorber 700 is enhanced, so that the electromagnetic shock absorber 700 can withstand greater lateral forces, especially when the road conditions are bad, the electromagnetic shock absorber 700 can withstand greater lateral forces, thereby ensuring that the electromagnetic shock absorber 700 always maintains a linear reciprocating motion, which is beneficial to improving the output force of the electromagnetic shock absorber 700 and meeting the shock absorbing force requirements of the vehicle 3000.

[0178] In some embodiments, Fig.12 As shown, the guide assembly 83 includes a linear bearing group 84 and a guide rod 85, one of which is arranged on the stator movable rod 80 and the other is arranged on the movable housing 82, and at least a portion of the guide rod 85 is slidably mounted on the linear bearing group 84.

[0179] For example, the stator movable rod 80 is provided with a linear bearing group 84, and the movable housing 82 is provided with a guide rod 85, or the stator movable rod 80 is provided with a guide rod 85, and the movable housing 82 is provided with a linear bearing group 84, wherein at least a portion of the guide rod 85 is slidably matched with the linear bearing group 84, and optionally, the axial direction of the guide rod 85 is parallel to the axial direction of the stator movable rod 80, so that the guide rod 85 and the linear bearing group 84 can slide relative to each other, so as to play a guiding role when the stator movable rod 80 and the movable housing 82 slide relative to each other along the axial direction.

[0180] In some embodiments, Figure 13-Figure 15As shown, the outer peripheral wall of the stator movable rod 80 is provided with a mounting groove 81 , the linear bearing group 84 is installed in the mounting groove 81 , and the guide rod 85 is arranged on the inner peripheral wall of the movable housing 82 .

[0181] Therefore, by setting the mounting groove 81, the linear bearing group 84 can be embedded in the mounting groove 81, thereby enhancing the structural stability of the linear bearing group 84 and making the linear bearing group 84 not occupy the space between the stator movable rod 80 and the mover housing 82, thereby ensuring that the winding coil 86 and the permanent magnet group 87 have sufficient layout space, which is beneficial to improving the output force of the electromagnetic shock absorber 700, so that it can meet the shock absorbing force requirements of the vehicle 3000.

[0182] Optionally, the mounting groove 81 is recessed radially inwardly along the stator movable rod 80, and has an open opening 811 open radially outwardly toward the stator movable rod 80, so that the guide rod 85 can directly cooperate with the linear bearing group 84, thereby reducing the difficulty of cooperation between the two.

[0183] Among them, the linear bearing group 84 can be welded to the inner wall of the installation groove 81, or the linear bearing group 84 can be snapped into the installation groove 81. Of course, the linear bearing group 84 can also be fixed in the installation groove 81 by other connection methods, which are not limited here.

[0184] In some embodiments, Fig.14 and Fig.15 As shown, the linear bearing assembly 84 is provided with an opening 842 , and in the radial direction of the linear bearing assembly 84 , the opening 842 is open toward the guide rod 85 .

[0185] Thus, at least a portion of the guide rod 85 can extend into the linear bearing group 84 along the opening 842, that is, the matching direction of the guide rod 85 and the linear bearing group 84 is the radial direction of the linear bearing group 84, that is, the radial direction of the stator movable rod 80, thereby facilitating the enhancement of the stiffness of the stator movable rod 80 in the radial direction of the stator movable rod 80, so that the electromagnetic shock absorber 700 can withstand a larger lateral force to meet the shock absorbing force requirements of the vehicle 3000.

[0186] In some embodiments, Fig.12 As shown, a winding coil 86 and a permanent magnet group 87 are further provided between the stator movable rod 80 and the mover housing 82 , and one of the stator movable rod 80 and the mover housing 82 is provided with the winding coil 86 and the other is provided with the permanent magnet group 87 .

[0187] Therefore, the magnetic field formed by the winding coil 86 after power is turned on and the magnetic field of the permanent magnet group 87 can interact to generate an action force and a reaction force, that is, the thrust of the shock absorber. The magnetic field force gives the mover housing 82 an approximate up and down force, so that the mover housing 82 and the stator movable rod 80 can perform axial linear reciprocating motion.

[0188] For example, the stator movable rod 80 is provided with a winding coil 86, and the movable housing 82 is provided with a permanent magnet group 87, or the stator movable rod 80 is provided with a permanent magnet group 87, and the movable housing 82 is provided with a winding coil 86, wherein in the radial direction of the electromagnetic shock absorber 700, there is a uniform fitting gap between the winding coil 86 and the permanent magnet group 87.

[0189] In actual use, the winding coil 86 generates an electromagnetic field after being energized. After being energized, the magnetic field formed by the winding coil 86 interacts with the magnetic field of the permanent magnet group 87 to generate an action force and a reaction force, that is, the thrust of the shock absorber. The magnetic field force gives the mover housing 82 an approximate up and down force, so that the mover housing 82 and the stator movable rod 80 can reciprocate in a straight line in the axial direction.

[0190] It is worth noting that the direction of the magnetic field is radial with the interface of the winding coil 86 as the origin. The magnitude of the magnetic field can be controlled by the magnitude of the input current, and the positive and negative directions of the magnetic field can be controlled by adjusting the positive and negative current.

[0191] Exemplarily, the outer peripheral wall of the stator movable rod 80 is provided with an annular groove (not shown in the figure), the winding coil 86 is wound in the annular groove, and in the circumferential direction of the movable housing 82, the permanent magnet group 87 includes a plurality of sub-permanent magnets distributed and spaced apart along the circumferential direction, and the sub-permanent magnets are located between two adjacent guide rods 85.

[0192] Therefore, by setting an annular groove so that the winding coil 86 can be wound in the annular groove, the space occupied by the winding coil 86 between the stator movable rod 80 and the movable housing 82 can be reduced, which is conducive to the miniaturization design of the electromagnetic shock absorber 700 and the increase of the winding length of the winding coil 86, thereby providing a greater magnetic field output force.

[0193] Optionally, the annular groove can also be used for installing silicon steel sheets.

[0194] Furthermore, by setting the permanent magnet group 87 to be a plurality of sub-permanent magnets distributed and spaced circumferentially, so that the sub-permanent magnets can be sandwiched between two adjacent guide rods 85, interference between the permanent magnet group 87 and the guide rods 85 can be avoided, which helps to reduce the difficulty of arranging the permanent magnet group 87. The arrangement of the permanent magnet group 87 can make full use of the space between two adjacent guide rods 85, which helps to improve space utilization, thereby realizing a miniaturized design of the electromagnetic shock absorber 700.

[0195] In some embodiments, Fig.15 As shown, the guide rod 85 includes a rod body 851 and a spherical protrusion 852 . The rod body 851 is connected to the inner circumferential wall of the mover housing 82 , and the spherical protrusion 852 is connected to the rod body 851 and extends into the linear bearing assembly 84 .

[0196] Therefore, by providing the spherical protrusion 852, the contact area between the guide rod 85 and the linear bearing group 84 can be enhanced by utilizing the spherical protrusion 852, so that the guide rod 85 can better slide with the linear bearing group 84 to enhance the matching stability between the two.

[0197] In some embodiments, Fig.12 and Fig.13 As shown, the linear bearing group 84 includes a plurality of open linear bearings 841 , and the plurality of open linear bearings 841 are spaced apart and distributed in the axial direction of the stator movable rod 80 .

[0198] Therefore, by setting up a plurality of open linear bearings 841, the matching stability between the linear bearing group 84 and the guide rod 85 is enhanced, and the plurality of open linear bearings 841 are spaced apart in the axial direction of the stator movable rod 80, so that when the electromagnetic shock absorber 700 is subjected to lateral force, the plurality of open linear bearings 841 can be used to disperse the lateral force, thereby reducing the influence of the lateral force on the electromagnetic shock absorber 700.

[0199] It should be noted that the specific number of open linear bearings 841 of the multiple linear bearing groups 84 can be the same or different, and the specific number of open linear bearings 841 of each linear bearing group 84 can be set according to the specific length size of the electromagnetic vibration absorber 700.

[0200] In some embodiments, Fig.14 As shown, there are three groups of guide assemblies 83, and the distance between any two adjacent groups of guide assemblies 83 in the three groups of guide assemblies 83 is the same.

[0201] Therefore, by arranging three groups of guide assemblies 83 on the circumference of the stator movable rod 80, the distribution direction between the three groups of guide assemblies 83 can meet the distribution law of the three vertices of the triangle, that is, the three groups of guide assemblies 83 are evenly distributed in a triangle. In this way, it is convenient to enhance the stiffness of the stator movable rod 80, so that the electromagnetic shock absorber 700 can withstand greater lateral force to meet the shock absorbing force requirements of the vehicle 3000.

[0202] Of course, the above-mentioned uniformly distributed triangular arrangement is only a preferred embodiment. In actual arrangement, the guide components 83 can also be provided with four or five groups, etc., and the spacing between any two adjacent guide components 83 can be the same or different, which is not limited here.

[0203] Combine the following Figure 11-Figure 15 A specific embodiment of the electromagnetic shock absorber 700 according to the embodiment of the present invention is described as being applied to an active suspension system of a vehicle 3000:

[0204] The electromagnetic absorber 700 is electrically connected to the ECU (Electronic Control Unit) of the vehicle 3000, and Fig.11 As shown, the upper end of the electromagnetic shock absorber 700 is provided with a first fixing bolt 93, and the upper end of the electromagnetic shock absorber 700 is connected to the vehicle frame or body as a whole through three first fixing bolts 93, and the lower end of the electromagnetic shock absorber 700 is connected to the transmission shaft of the wheel.

[0205] Specifically, Fig.12 As shown, the electromagnetic shock absorber 700 includes a stator movable rod 80, a mover housing 82, a guide assembly 83, a winding coil 86, a permanent magnet group 87, a shock absorber tower top 88, a dust cover 89, a spring upper base 90, an outer protective cover 91, a connecting flange 92, a coil spring 110, a spring lower base 111, a downward jump limit shock absorber block 112, a position sensor grating 113, a position sensor 114, an upward jump limit shock absorber block 115, a sensor mounting base 116, and a shock absorber bracket 117.

[0206] Specifically, Fig.12 As shown, the outer protective cover 91 is connected to the movable housing 82 and is sleeved on the outside of the movable housing 82. The movable housing 82 is sleeved on the lower half of the stator movable rod 80. The upper half of the stator movable rod 80 extends out of the movable housing 82 to be connected to the shock absorber tower top 88, and a connecting flange 92 is sleeved on the upper end of the stator movable rod 80. The connecting flange 92 and the upper end of the stator movable rod 80 are pressed together by interference fit and are connected to the shock absorber tower top 88, so as to enhance the connection stability between the stator movable rod 80 and the shock absorber tower top 88.

[0207] Among them, the inner wall of the mover housing 82 is attached with multiple layers of evenly arranged annular permanent magnet groups 87, and at the same time, three longitudinal guide rods 85 are evenly welded on the inner wall of the mover housing 82. The guide rods 85 and the permanent magnet groups 87 are evenly spaced on the inner wall of the mover housing 82, and three mounting grooves 81 are opened in the circumferential direction of the stator movable rod 80 for press-fitting the opening 842 type linear bearing group 84.

[0208] During actual assembly, the open linear bearing 841 passes through the guide column welded on the inner wall of the mover housing 82, and the two cooperate to constrain the movement direction of the electromagnetic vibration absorber 700, so that the electromagnetic vibration absorber 700 can only perform linear reciprocating motion along the guide direction (axial direction).

[0209] Compared with the single central guide structure in the related art, the three equally distributed guide components 83 of the present invention make the electromagnetic vibration absorber 700 have stronger rigidity and better lateral stability, and can withstand greater lateral forces.

[0210] In addition, the guide assembly 83 arranged on the radial outer edge of the stator movable rod 80 saves the movement space reserved at the bottom center of the stator movable rod 80, so that the diameter of the annular groove of the stator movable rod 80 for installing the winding coil 86 can be reduced, which is convenient for increasing the number of winding turns (length) of the winding coil 86, and thus can generate a greater magnetic field output force (thrust) under the premise that the overall specifications of the electromagnetic shock absorber 700 remain unchanged.

[0211] Furthermore, the spring upper base 90 is bonded together with one end of the shock absorber tower top 88 facing the mover housing 82, and the outer protective cover 91 passes through the outer protective cover 91 through the second radially distributed fixing bolts 94 to be connected to the spring upper base 90 to enhance the connection stability between the two, and a spring lower base 111 is also sleeved on the mover housing 82, and the coil spring 110 is sleeved on the mover housing 82 and is located between the mover housing 82 and the outer protective cover 91, so that the coil spring 110 can be protected by the outer protective cover 91 to reduce damage to the coil spring 110.

[0212] Alternatively, if Fig.11 As shown, a square hole is opened in the middle of the outer protective cover 91 to facilitate air flow and heat dissipation of the electromagnetic shock absorber 700, wherein the square hole can be covered with multiple layers of annular filter elements to prevent external dust or muddy water from entering the electromagnetic shock absorber 700 and causing damage to the working components.

[0213] Among them, one end of the coil spring 110 (such as Fig.12 The upper end of the coil spring 110 (as shown in FIG. Fig.12 The lower end of the spring 90 is against the lower spring base 111, and the upper spring base 90 and / or the lower spring base 111 are provided with a rubber pad at one end close to the coil spring 110 to reduce the wear and abnormal noise of the coil spring 110 during movement. In this way, during the movement of the vehicle 3000, the electromagnetic shock absorber 700 can jump up and down to compress the coil spring 110 to achieve the function of reducing the impact force of the vehicle 3000 on the ground together with the internal components of the electromagnetic shock absorber 700.

[0214] A limit-down shock-absorbing block 112 is provided at the lower end of the outer protective cover 91. The limit-down shock-absorbing block 112 is used for limiting shock absorption when the electromagnetic shock absorber 700 reaches a limit of downward jump when the wheel jumps up or falls into a pothole.

[0215] At the same time, the sensor mounting base 116 and the upper jump limit buffer block 115 are also fixed as a whole with the lower end of the movable housing 82 through the connecting bolts 118; wherein the position sensor 114 is installed on the sensor mounting base 116, and the position sensor grating 113 is installed on the inner wall of the center hole at the lower end of the stator movable rod 80, and a cylindrical groove of a certain depth is opened at the bottom of the stator movable rod 80 to accommodate the axial movement of the position sensor 114, and the position sensor 114 cooperates with the position sensor grating 113 fixed on the inner wall of the center hole at the bottom of the stator movable rod 80.

[0216] The electromagnetic vibration absorber 700 is arranged in the vertical direction ( Fig.12 During the bouncing process (in the axial direction), the position sensor 114 moves up and down synchronously with the sensor mounting base 116. The position sensor 114 can identify the bouncing condition of the wheel by the change of the grating position of the position sensor grating 113, and transmit the parameters to the ECU in time, so that the ECU can give corresponding adjustment instructions in time based on other sensor parameters. The maximum compression height of the upper jump limit shock absorber 115 is higher than the upper end of the sensor mounting base 116, so as to ensure that the bottom of the stator movable rod 80 will not contact and collide with the sensor mounting base 116 after the shock absorber block is fully compressed at the upper jump limit, so as to avoid damage to the stator movable rod 80 or other components.

[0217] During the up and down bouncing of the electromagnetic shock absorber 700, the position sensor 114 moves up and down synchronously with the mover housing 82 through the sensor mounting base 116. At this time, the position sensor 114 can identify the bouncing condition of the wheel through the change in the position of the position sensor grating 113, and transmit the parameters to the ECU in time, so that the ECU can give corresponding adjustment instructions in time based on other sensor parameters. The maximum compression height of the upper jump limit buffer block 115 is higher than the upper end of the sensor mounting base 116, so as to ensure that the bottom of the stator movable rod 80 (such as Fig.12 The lower end of the stator 80 will not come into contact with the sensor mounting base 116, thereby avoiding damage to the stator movable rod 80 or other components.

[0218] In actual use, when the vehicle 3000 is running, the sensor group recognizes the change in road conditions and transmits the signal to the ECU. The ECU changes the direction and size of the magnetic field of the electromagnetic shock absorber by adjusting the input current parameters of the winding coil 86 of the electromagnetic shock absorber 700 according to the actual conditions of the road surface, and further realizes real-time adjustment of the output thrust of the electromagnetic shock absorber 700. Finally, by controlling the thrust size and direction of the shock absorber, the impact force of the road on the vehicle 3000 when the operating conditions of the vehicle 3000 change is reduced, so that the operating state of the vehicle 3000 can be maintained as stable as possible, thereby improving the driving stability of the vehicle 3000 and the comfort of the driver and passengers.

[0219] It should be noted that the above arrangement and installation positions of multiple components in the electromagnetic vibration absorber 700 are only used as a preferred embodiment and do not represent a limitation thereto. For example, the guide assembly 83 of the electromagnetic vibration absorber 700 of the present invention can be applied to all electromagnetic vibration absorbers 700 of linear motors (plate type, cylindrical type, multi-prism type, etc.), and can be deformed according to the shape of the stator inside the linear motor to form a guide structure with 3 points (three groups of guide assemblies 83), 4 points (four groups of guide assemblies 83), 5 points (five groups of guide assemblies 83) and multiple points (multiple groups of guide assemblies 83).

[0220] In addition, the type of spring of the electromagnetic shock absorber 700 (coil spring 110 or air spring, etc.), the layout of the spring (upper, middle, lower), the coordination between the stator and the mover (the winding coil 86 is on the mover housing 82, the permanent magnet group 87 is on the stator movable rod 80, or the winding coil 86 is on the stator movable rod 80, the permanent magnet group 87 is on the mover housing 82), the limiting structure (upper and lower limits, internal and external limits, etc.), and the layout and type of the position sensor 114 will not affect the adaptation of this type of guide component 83.

[0221] The present invention also provides a vehicle 3000 .

[0222] like Fig.16 As shown, a vehicle 3000 according to an embodiment of the present invention includes an electromagnetic shock absorber 700 according to any one of the above embodiments.

[0223] According to the vehicle 3000 of the embodiment of the present invention, the electromagnetic shock absorber 700 thereof is convenient to enhance the stiffness of the electromagnetic shock absorber 700 by arranging a plurality of groups of guide components 83 spaced apart in the circumferential direction of the stator movable rod 80, so that the electromagnetic shock absorber 700 can withstand greater lateral force, especially when the road condition is bad, the electromagnetic shock absorber 700 can withstand greater lateral force, thereby ensuring that the electromagnetic shock absorber 700 always maintains a linear reciprocating motion, which is beneficial to improving the output force of the electromagnetic shock absorber 700 and meeting the shock absorbing force requirements of the vehicle 3000.

[0224] Next, a vibration absorber 800 according to a fourth embodiment of the present invention will be described with reference to the accompanying drawings.

[0225] like Fig.17 and Fig.18As shown, the shock absorber 800 includes a first component 120 and a second component 130, one of which is a stator component 140, and the other of which is a mover component 150. The stator component 140 and the mover component 150 move and match along a preset direction (for example, the axial direction of the shock absorber 800), and the stator component 140 includes a stator coil 141. A sliding cavity 121 is defined in the first component 120, and the second component 130 slides and matches in the sliding cavity 121 along the preset direction.

[0226] Obviously, when the first component 120 and the second component 130 move and cooperate in a preset direction, the length of the portion of the second component 130 extending into the sliding cavity 121 in the preset direction changes with the relative movement of the first component 120 and the second component 130; the stator component 140 and the mover component 150 interact with each other to produce an action, and the action force can make the mover component 150 and the stator component 140 move relative to each other in the preset direction, that is, form a thrust or resistance of the shock absorber 800. For example, when the shock absorber 800 is used in a vehicle, the shock absorber 800 can be connected between the vehicle body and the wheel to change the height of the vehicle body relative to the wheel to adjust the posture of the whole vehicle body, which is conducive to making the vehicle drive in a suitable posture.

[0227] The second component 130 defines a cavity 131, and a communication port 131a is formed at one end of the second component 130 in a preset direction to connect the cavity 131 and the sliding cavity 121. The communication port 131a is formed on the portion of the second component 130 extending into the sliding cavity 121, and the communication port 131a is located at one end of the portion of the second component 130 extending into the sliding cavity 121. Therefore, by providing the sliding cavity 121 and the cavity 131, it is beneficial to appropriately reduce the weight of the first component 120 and the second component 130, and at the same time, it is convenient to provide a certain arrangement space for other components (such as the position detection component 160 described later).

[0228] It can be understood that when the first component 120 is the stator component 140 and the second component 130 is the movable component 150, a sliding cavity 121 is defined in the stator component 140, a portion of the movable component 150 extends into the sliding cavity 121, and a cavity 131 is defined in the movable component 150; when the first component 120 is the movable component 150 and the second component 130 is the stator component 140, a sliding cavity 121 is defined in the movable component 150, a portion of the stator component 140 extends into the sliding cavity 121, and a cavity 131 is defined in the stator component 140.

[0229] For example, in Fig.18In the example, taking the preset direction as the up and down direction as an example, at least the lower portion of the second component 130 extends into the sliding cavity 121, and at least the portion of the second component 130 extending into the sliding cavity 121 defines a cavity 131, that is, at least the lower portion of the cavity wall of the cavity 131 is located in the sliding cavity 121, and a connecting port 131a is formed at the lower end of the cavity 131 to connect the cavity 131 and the sliding cavity 121; of course, in other examples, at least the upper portion of the second component 130 extends into the sliding cavity 121, and at least the portion of the second component 130 extending into the sliding cavity 121 defines a cavity 131, and a connecting port 131a is formed at the upper end of the cavity 131 to connect the cavity 131 and the sliding cavity 121.

[0230] like Fig.18 As shown, the shock absorber 800 also includes a position detection component 160, which is used to detect the position of the movable component 150 relative to the stator component 140 in a preset direction. The position detection component 160 can measure the position change of the movable component 150 relative to the stator component 140 over a period of time to obtain the displacement of the movable component 150 relative to the stator component 140. At this time, the speed, acceleration, etc. of the movable component 150 can be obtained by performing a function analysis on time.

[0231] It can be seen that the position detection component 160 in the present application is an active detection component with strong self-learning ability. It can correct deviations through self-learning without the need for large-scale equipment to assist in correction and learning, and can well measure the position of the movable component 150 relative to the stator component 140 regardless of whether it is in a stationary state or a moving state. That is to say, in the current state, regardless of whether the movable component 150 moves relative to the stator component 140, the position detection component 160 can detect the current position of the movable component 150 relative to the stator component 140, so that when the shock absorber 800 is used in a vehicle, it is convenient for vehicle offline detection and calibration.

[0232] In addition, compared with some technologies that use passive detection components, such as transmission machinery or grating guide rails + scanning head sensors, etc., the passive detection components are used to detect the displacement of the movable component 150 relative to the stator component 140. When the movable component 150 moves slowly relative to the stator component 140 or the movable component 150 is stationary relative to the stator component 140, there is a large deviation in the measurement of the passive detection component. The position detection component 160 in the present application can effectively solve the above problems. At the same time, the above-mentioned setting of the present application is basically not limited by the loss of physical structure. When the shock absorber 800 is used in a vehicle, the influence of suspension movement and force and the loss of components have little effect on the detection accuracy of the position detection component 160, and basically have no significant impact, which effectively improves the service life.

[0233] Among them, the position detection component 160 is arranged in the sliding cavity 121 and / or the cavity 131, and may include the following multiple parallel schemes: 1. The position detection component 160 is arranged in the sliding cavity 121, and at least part of the position detection component 160 is located in the sliding cavity 121; 2. The position detection component 160 is arranged in the cavity 131, and at least part of the position detection component 160 is located in the cavity 131. At this time, there is no specific restriction on the position of the position detection component 160 relative to the sliding cavity 121. For example, the position detection component 160 can always be located in the sliding cavity 121, or it can always be located outside the sliding cavity 121, and it can also follow the relative movement of the second component 130 and the first component 120 to realize switching between a first position located in the sliding cavity 121 and a second position located outside the sliding cavity 121; 3. The position detection component 160 is arranged in the sliding cavity 121 and the cavity 131, and at least part of the position detection component 160 is located in the space area formed by the sliding cavity 121 and the cavity 131.

[0234] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0235] The position detection component 160 includes a signal transmitter 162 and a signal receiver 163. The signal transmitter 162 and the signal receiver 163 are both arranged relative to the connecting port 131a in a preset direction. Then, on a plane perpendicular to the preset direction, at least part of the orthographic projection of the signal transmitter 162 is located within the orthographic projection range of the outer peripheral wall of the connecting port 131a, and at least part of the orthographic projection of the signal receiver 163 is also located within the orthographic projection range of the outer peripheral wall of the connecting port 131a; the signal transmitter 162 is used to transmit a detection signal toward the connecting port 131a, so that the detection signal emitted by the signal transmitter 162 can pass through the connecting port 131a, and the signal receiver 163 is used to receive the detection signal emitted by the signal transmitter 162, so that the signal emitted by the signal transmitter 162 is received by the signal receiver 163 after passing through the connecting port 131a.

[0236] It can be understood that the signal receiver 163 can be used to directly receive the detection signal emitted by the signal transmitter 162, and the detection signal emitted by the signal transmitter 162 can be transmitted in the sliding cavity 121 and the cavity 131 until it is received by the signal receiver 163. At this time, the signal transmitter 162 and the signal receiver 163 can be located on opposite sides of the connecting port 131a in a preset direction, and the signal transmitter 162 can emit the detection signal toward the signal receiver 163; of course, the signal receiver 163 can also be used to indirectly receive the detection signal emitted by the signal transmitter 162. At this time, the detection signal emitted by the signal transmitter 162 can be received by the signal receiver 163 after at least one reflection. For example, the signal transmitter 162 and the signal receiver 163 can be located on the same side of the connecting port 131a in a preset direction.

[0237] It can be seen that since the position detection component 160 is arranged in the sliding cavity 121 and / or the cavity 131, and the setting of the connecting port 131a can allow the detection signal emitted by the signal transmitter 162 to pass through, the first component 120 and the second component 130 will not block the transmission of the detection signal, which is beneficial for the first component 120 and the second component 130 not affecting the detection accuracy of the position detection component 160, and at the same time facilitates the arrangement of the signal transmitter 162 and the signal receiver 163 and the transmission of the detection signal. Moreover, the detection signal of the position detection component 160 can be transmitted along a preset direction or along a direction inclined relative to the preset direction. In a plane perpendicular to the preset direction, the position detection component 160 will not take up too much space, which is beneficial to improving the design compactness of the shock absorber 800; for example, when the preset direction is the axial direction of the shock absorber 800, the measurement method of the position detection component 160 is basically axial measurement. Compared with some technologies, the grating guide + scanning head obtains the displacement of the movable component 150 through radial measurement, that is, the grating guide and the scanning head are arranged at radial intervals. The above-mentioned setting of the present application can save the radial dimension of the shock absorber 800 to a great extent, making the design of the shock absorber 800 more compact.

[0238] Moreover, other components of the stator assembly 140 and other components of the movable assembly 150 (for example, the stator coil 141 and movable magnet 151 described later may be arranged) need to be arranged in the sliding cavity 121. Usually, the sliding cavity 121 needs to have a suitable radial dimension. In the present application, the position detection component 160 is arranged in the sliding cavity 121 and / or the cavity 131 so as to make more reasonable use of the internal space of the shock absorber 800.

[0239] According to the shock absorber 800 of the embodiment of the present invention, a position detection component 160 is provided for detecting the relative position of the first component 120 and the second component 130 in a preset direction, so that the current relative position of the two can be well measured regardless of being in a stationary state or a moving state through active detection, and the shock absorber 800 has good detection accuracy and service life; moreover, the position detection component 160 is arranged in the sliding cavity 121 and / or the cavity 131 to reasonably utilize the internal space of the shock absorber 800, and at the same time cooperates with the detection method of the position detection component 160 along the preset direction to effectively save the size of the shock absorber 800 in a direction perpendicular to the preset direction, which is beneficial to improving the structural compactness of the shock absorber 800.

[0240] It should be noted that, in the description of the present application, “the axial direction of the shock absorber 800” refers to the axial direction of the stator assembly 140 or the axial direction of the mover assembly 150. Fig.18 The extension direction of the dotted line L, the dotted line L is the central axis of the stator assembly 140 and the movable assembly 150, and the "radial direction of the shock absorber 800" is the radial direction of the stator assembly 140, which refers to the direction passing through the central axis of the stator assembly 140 on the radial plane of the stator assembly 140. The "radial" is perpendicular to the "axial".

[0241] In some embodiments, one end of the sliding cavity 121 in a preset direction has a matching opening 121a, and the second component 130 is inserted into the matching opening 121a, so that a portion of the second component 130 extends into the sliding cavity 121. Fig.18 In the example, taking the preset direction as the up-down direction as an example, the matching opening 121a is formed at the top of the sliding cavity 121, and the matching opening 121a is communicated with the sliding cavity 121, at least the lower part of the second component 130 is penetrated through the matching opening 121a and extends into the sliding cavity 121, and at least the part of the second component 130 extending into the sliding cavity 121 defines the cavity 131, that is, at least the lower part of the cavity wall of the cavity 131 is located in the sliding cavity 121, and the lower end of the cavity 131 forms There is a connecting port 131a to connect the cavity 131 and the sliding cavity 121; of course, in other examples, the matching port 121a can also be formed at the bottom of the sliding cavity 121, at least the upper part of the second component 130 is passed through the matching port 121a and extends into the sliding cavity 121, and at least the part of the second component 130 that extends into the sliding cavity 121 defines the cavity 131, and the upper end of the cavity 131 is formed with a connecting port 131a to connect the cavity 131 and the sliding cavity 121.

[0242] In some embodiments, Fig.18 and Fig.19As shown, the signal transmitter 162 and the signal receiver 163 are integrated, and the signal transmitter 162 and the signal receiver 163 are arranged on the same side of the communication port 131a in a preset direction. The signal transmitter 162 and the signal receiver 163 are both arranged in one of the first component 120 and the second component 130. The other of the first component 120 and the second component 130 is provided with a signal reflector 164, and the signal reflector 164 is used to reflect the detection signal emitted by the signal transmitter 162 toward the signal receiver 163. Therefore, it is beneficial to save the occupied space of the signal transmitter 162 and the signal receiver 163, and at the same time, the wiring of the signal transmitter 162 and the signal receiver 163 will not be too scattered, which is convenient for wiring arrangement.

[0243] Therefore, the signal transmitter 162 and the signal receiver 163 are both arranged in the first component 120 or the second component 130, which can effectively avoid the position detection component 160 from having a large measurement deviation when the shock absorber 800 is subjected to lateral force, which is beneficial to improving the measurement accuracy of the position detection component 160; moreover, the above-mentioned setting is particularly suitable for the situation where there is no medium such as oil inside the shock absorber 800, so as to ensure that the detection signal can smoothly reach the signal reflection component 164 to be reflected.

[0244] The signal transmitter 162 and the signal receiver 163 are arranged on the same side of the communication port 131a in a preset direction, and may include the following multiple parallel schemes: 1. The signal transmitter 162 and the signal receiver 163 are both arranged in the cavity 131. In this case, the signal transmitter 162 and the signal receiver 163 may be fixed to the second component 130. There is no specific restriction on the relative positions of the signal transmitter 162 and the signal receiver 163 and the sliding cavity 121. For example, the signal transmitter 162 and the signal receiver 163 can be always located in the sliding cavity 121, or can be always located outside the sliding cavity 121, or can follow the relative movement of the second component 130 and the first component 120 to switch between the first position located in the sliding cavity 121 and the second position located outside the sliding cavity 121; 2. The signal transmitter 162 and the signal receiver 163 are both arranged in the sliding cavity 121 and are suitable for being located outside the cavity 131. At this time, the signal transmitter 162 and the signal receiver 163 can be fixed to the first component 120.

[0245] The following is an example in which the signal reflecting element 164 is arranged in the first component 120, and the signal transmitter 162 and the signal receiver 163 are both arranged in the second component 130. After reading the following description, those skilled in the art can easily understand the implementation scheme in which the signal reflecting element 164 is arranged in the second component 130, and the signal transmitter 162 and the signal receiver 163 are both arranged in the first component 120.

[0246] exist Figure 18-Figure 20In the example, the preset direction is the up-down direction, the signal reflector 164 is fixed on the bottom wall of the sliding cavity 121 and is suitable for being located at the lower side of the connecting port 131a, the signal transmitter 162 and the signal receiver 163 are both fixed on the second component 130 and are both located above the connecting port 131a, the signal transmitter 162 transmits the detection signal downward, and the detection signal passes through the connecting port 131a and is reflected by the signal reflector 164 and transmitted upward until it is received by the signal receiver 163. Of course, the signal reflector 164 can be provided on the top wall of the sliding cavity 121 and is suitable for being located at the upper side of the connecting port 131a.

[0247] Optionally, the signal reflector 164 is a reflective patch, which is helpful to improve the reflective ability of the signal reflector 164 to the detection signal. Of course, the signal reflector 164 can also be a reflective coating applied to the corresponding surface; or, the signal reflector 164 can also be a partial surface of the first component 120 or a partial surface of the second component 130, for example, the signal reflector 164 is arranged on the bottom wall of the sliding cavity 121, and at least part of the bottom wall of the sliding cavity 121 can be formed as the signal reflector 164 to reflect the detection signal. It can be seen that the signal reflector 164 can be integrally formed with the first component 120 or integrally formed with the second component 130, and can also be installed on the first component 120 or the second component 130 by assembly means.

[0248] Of course, the present application is not limited to this; in some other embodiments of the present application, the signal transmitter 162 and the signal receiver 163 are separately arranged, and the signal transmitter 162 and the signal receiver 163 are respectively arranged on opposite sides of the connecting port 131a in a preset direction, one of the signal transmitter 162 and the signal receiver 163 is arranged in the first component 120, and the other of the signal transmitter 162 and the signal receiver 163 is arranged in the second component 130; at this time, the detection signal emitted by the signal transmitter 162 can be directly received by the signal receiver 163 after passing through the connecting port 131a, and there is no need to set the signal reflecting member 164, which is conducive to simplifying the structure of the shock absorber 800.

[0249] The following description will be made by taking the example that the signal transmitter 162 is disposed in the second component 130 and the signal receiver 163 is disposed in the first component 120. After reading the following description, those skilled in the art will easily understand other parallel implementation schemes.

[0250] Exemplarily, the preset direction is the up-down direction, the signal transmitter 162 is arranged in the cavity 131 and is located above the connecting port 131a, the signal receiver 163 is arranged on the bottom wall of the sliding cavity 121 and is suitable for being located at the lower side of the connecting port 131a, the signal transmitter 162 transmits the detection signal downward, and the detection signal passes through the connecting port 131a until it is received by the signal receiver 163; at this time, the signal transmitter 162 can always be located in the sliding cavity 121, can also always be located outside the sliding cavity 121, and can also follow the relative movement of the second component 130 and the first component 120 to switch between the first position located in the sliding cavity 121 and the second position located outside the sliding cavity 121. Of course, the signal receiver 163 can be arranged on the top wall of the sliding cavity 121 and is suitable for being located at the upper side of the connecting port 131a.

[0251] It is understandable that, whether the signal transmitter 162 and the signal receiver 163 are integrated or separated, the position of the moving subassembly 150 relative to the stator assembly 140 can be calculated based on the signal amount received by the signal receiver 163. The signal amount can include at least one of the flight time (i.e., the time interval between transmission and reception), signal strength, etc., but is not limited thereto. The signal strength can be understood as the signal amplitude. Moreover, whether the signal transmitter 162 and the signal receiver 163 are integrated or separated, the measurement space of the position detection assembly 160 has a certain degree of closure, so as to effectively reduce the influence of the external environment on the position detection assembly 160 and improve the detection reliability.

[0252] In some embodiments, Figure 18-Figure 20 As shown, the sliding cavity 121 has a mating opening 121a at one end in a preset direction, and the second component 130 is arranged through the mating opening 121a. When the signal transmitter 162 and the signal receiver 163 are integrated, the signal transmitter 162 and the signal receiver 163 are both arranged in the cavity 131. If the signal transmitter 162 and the signal receiver 163 need to be installed in the second component 130 before the first component 120 and the second component 130 are assembled, then during the assembly process of the first component 120 and the second component 130, since a part of the second component 130 extends into the sliding cavity 121, the signal transmitter 162 and the signal receiver 163 will not interfere with the above assembly; of course, the shock absorber 800 can also be constructed to assemble the first component 120 and the second component 130 first, and then install the signal transmitter 162 and the signal receiver 163. At this time, the first component 120 will not interfere with the installation of the signal transmitter 162 and the signal receiver 163. Therefore, it is beneficial to improve the assembly convenience of the shock absorber 800.

[0253] The signal reflector 164 is disposed on a side wall of the sliding cavity 121 away from the mating port 121a, so that the signal reflector 164 is disposed relative to the signal transmitter 162 and the signal receiver 163 along a preset direction, and the signal reflector 164 is disposed relative to the communication port 131a along a preset direction, so that the signal receiver 163 can smoothly receive the detection signal reflected by the signal reflector 164. In addition, the signal reflector 164 will not occupy too much space on a plane perpendicular to the preset direction, which is conducive to further improving the compactness of the shock absorber 800.

[0254] In some embodiments, Figure 18-Figure 20 As shown, one end of the second component 130 away from the connecting port 131a extends out of the sliding cavity 121, and one end of the second component 130 away from the connecting port 131a is formed with an installation port 131b connected to the cavity 131, and the signal transmitter 162 and the signal receiver 163 are both arranged at the installation port 131b. At this time, during the relative movement of the first component 120 and the second component 130, the signal transmitter 162 and the signal receiver 163 can always be located outside the sliding cavity 121, which is convenient for increasing the distance between the signal transmitter 162 and the signal receiver 163 and the magnetic fields of the stator component 140 and the mover component 150, so that the signal transmitter 162 and the signal receiver 163 are basically outside the above-mentioned magnetic field range, so as to effectively reduce the interference of the magnetic field on the position detection component 160, which is beneficial to improving the detection accuracy; moreover, the signal transmitter 162, the signal receiver 163 and the connecting line 161 of the position detection component 160 (the connecting line 161 may include the routing of at least one of the signal transmitter 162 and the signal receiver 163) are not limited by the spatial size of the sliding cavity 121, which is beneficial for further improving the layout convenience and routing convenience of the position detection component 160, thereby facilitating improving the applicability of the shock absorber 800.

[0255] Of course, the position detection component 160 may not be provided with the connecting line 161. In this case, the position detection component 160 can transmit data with other components wirelessly.

[0256] For example, in Figure 18-Figure 20In the example, the preset direction is the up and down direction, the matching port 121a is formed at the top of the sliding cavity 121, the connecting port 131a is formed at the bottom of the cavity 131, and the installation port 10b is formed at the top of the cavity 131, then the signal transmitter 162 and the signal receiver 163 can be both arranged at the top of the shock absorber 800 to improve the convenience of layout, and the connecting line 161 can be directly extended upward to further improve the convenience of wiring; moreover, compared with some technologies, the detection component is placed externally and needs to be lifted and disassembled, which is cumbersome, and the grating guide rail + scanning head sensor is arranged internally, and the replacement requires the replacement of the shock absorber at the same time, and the maintenance cost is too high. In this application, by arranging the signal transmitter 162 and the signal receiver 163 at the top of the shock absorber 800, the disassembly and replacement can be completed without auxiliary equipment such as a lift, thereby improving the convenience of after-sales maintenance.

[0257] Optionally, when the signal transmitter 162 and the signal receiver 163 are both disposed at the mounting opening 131 b , the position detection component 160 is snap-fitted, bonded, or threadedly connected to the second component 130 .

[0258] Optionally, the connection line 161 includes wiring of the signal transmitter 162 and the signal receiver 163 , and the connection line 161 is directly press-fitted or plug-fitted to the signal transmitter 162 and the signal receiver 163 .

[0259] In some embodiments, Figure 18-Figure 20 As shown, the cavity 131 includes a first chamber 131c and a second chamber 131d arranged in sequence along a preset direction, the communication port 131a is formed on a side of the first chamber 131c away from the second chamber 131d, and the second component 130 is configured such that the first chamber 131c is always located in the sliding chamber 121 and the second chamber 131d is penetrated through the matching port 121a, and the cross-sectional area of ​​the first chamber 131c is greater than the cross-sectional area of ​​the second chamber 131d and the opening area of ​​the matching port 121a, then the cavity wall of the second chamber 20c and the sliding chamber 121 are connected. When the cavity wall of the cavity 121 with the mating opening 121a is directly or indirectly stopped, the second component 130 can be restricted from continuing to move out of the sliding cavity 121 to prevent the second component 130 from being out of engagement with the first component 120. At the same time, it is convenient for the orthographic projection of the inner wall of the second chamber 20c on a plane perpendicular to a preset direction to be entirely within the orthographic projection range of the outer peripheral edge of the connecting opening 131a, thereby ensuring that the signal transmitter 162 transmits a detection signal toward the connecting opening 131a to be reflected by the signal reflecting member 164 toward the signal receiver 163.

[0260] Among them, the signal transmitter 162 and the signal receiver 163 are both arranged in the second chamber 131d, and at least part of the signal transmitter 162 and the signal receiver 163 are arranged in the second chamber 131d, so that the second chamber 131d provides a suitable arrangement space for the signal transmitter 162 and the signal receiver 163, which is conducive to directly fixing the signal transmitter 162 and the signal receiver 163 on the cavity wall of the second chamber 131d.

[0261] For example, in Figure 18-Figure 20 In the example, a mounting opening 131b is formed at one end of the second chamber 131d away from the first chamber 131c, and the signal transmitter 162 and the signal receiver 163 are both arranged at the mounting opening 131b to improve the convenience of wiring. Of course, the signal transmitter 162 and the signal receiver 163 can also be arranged at other positions of the second chamber 131d, not limited to the mounting opening 131b.

[0262] In some embodiments, the position detection component 160 is a laser sensor, and the measurement frequency of the laser sensor can be flexibly set. Especially when the measurement frequency of the laser sensor is high, the laser sensor measures the position change of the movable component 150 relative to the stator component 140 over a period of time to obtain the displacement of the movable component 150 relative to the stator component 140. At this time, the speed and acceleration of the movable component 150 can be obtained by performing a function analysis on time, which is beneficial to reduce measurement deviations and improve measurement accuracy.

[0263] Of course, the type of the position detection component 160 is not limited, and the position detection component 160 can also be other types of active sensors, such as an acoustic wave sensor.

[0264] In some embodiments, Fig.18 As shown, the shock absorber 800 also includes a first buffer member 170, which is fixed to the inner wall of the sliding cavity 121, and the first buffer member 170 is arranged around the second component 130 to limit the maximum axial length of the shock absorber 800, that is, to limit the maximum displacement of the movable component 150 relative to the stator component 140, reduce the collision between the movable component 150 and the stator component 140, thereby reducing the damage to the movable component 150 and the stator component 140, so as to play a role of limiting protection; illustratively, the sliding cavity 121 has a mating opening 121a at one end in a preset direction, and the second component 130 is penetrated through the mating opening 121a, so that a part of the second component 130 extends into the sliding cavity 121, and the first buffer member 170 is arranged around the mating opening 121a.

[0265] The shock absorber 800 also includes a second buffer member 171, which is fixed to the second component 130, and the second buffer member 171 is arranged around the portion of the second component 130 located outside the sliding cavity 121 to limit the minimum axial length of the shock absorber 800, that is, to limit the minimum displacement of the movable component 150 relative to the stator component 140, reduce the collision between the movable component 150 and the stator component 140, thereby reducing the damage to the movable component 150 and the stator component 140, so as to play a role of limiting protection.

[0266] Optionally, the first buffer member 170 and the second buffer member 171 are rubber members or the like.

[0267] exist Fig.18 In the example, the preset direction is the up and down direction, the mating port 121a is formed at the top of the sliding cavity 121, the connecting port 131a is formed at the bottom of the cavity 131, the first buffer member 170 is arranged on the top wall of the sliding cavity 121, and the first buffer member 170 is arranged around the mating port 121a and the part of the second component 130 that passes through the mating port 121a, so as to limit the second component 130 from continuing to move upward when the second component 130 moves upward to the upper jump position stroke limit position relative to the first component 120; the second buffer member 171 is arranged above the first component 120 and around the upper part of the second component 130 extending out of the sliding cavity 121, so as to limit the second component 130 from continuing to move downward when the second component 130 moves downward to the lower jump position stroke limit position relative to the first component 120.

[0268] In some embodiments, Fig.18 and Fig.19 As shown, the shock absorber 800 also includes a protective member 180, which is arranged around the second buffer member 171, and the two ends of the protective member 180 are respectively sealed and connected to the first component 120 and the second component 130, so that the protective member 180, the first component 120 and the second component 130 define a sealed cavity. The protective member 180 is arranged in the sealed cavity to realize the dustproof and waterproof settings of the second buffer member 171, so as to enhance the protection capability of the shock absorber 800.

[0269] It is understandable that the length of the protective member 180 in a preset direction is adjustable so that the protective member 180 can adapt to the relative movement of the first component 120 and the second component 130 .

[0270] In some embodiments, Fig.18 and Fig.19As shown, the shock absorber 800 also includes a first mounting seat 190, a second mounting seat 191 and a shock-absorbing spring 192. The first mounting seat 190 is fixed to the first component 120, the second mounting seat 191 is fixed to the second component 130, and the shock-absorbing spring 192 is sleeved outside the second buffer member 171. Then, on the plane passing through the central axis L of the shock absorber 800, the orthographic projection of the shock-absorbing spring 192 and the orthographic projection of the second buffer member 171 at least partially overlap, and the shock-absorbing spring 192 stops between the first mounting seat 190 and the second mounting seat 191 to absorb the vibration transmitted from the ground to the vehicle body when the vehicle is driving, thereby ensuring that the vehicle has good driving smoothness, and at the same time helping to reduce the space occupied by the shock absorber 800 in a preset direction.

[0271] Of course, the position of the shock-absorbing spring 192 is not limited to this. The position of the shock-absorbing spring 192 in the preset direction can be set according to actual needs. For example, if the preset direction is the up and down direction, the shock-absorbing spring 192 can be arranged at the upper part, middle part, or lower part of the shock absorber 800 to meet the needs of different vehicle models; or the shock-absorbing spring 192 is arranged outside the shock absorber 800 to be independently set from the shock absorber 800.

[0272] For example, in Fig.18 and Fig.19 In the example, the shock absorber 800 includes a protective member 180, a first mounting seat 190, a second mounting seat 191 and a shock-absorbing spring 192. One end of the protective member 180 is sealed with the first mounting seat 190, so that the protective member 180 is connected to the first component 120 through the first mounting seat 190, and the other end of the protective member 180 is sealed with the second mounting seat 191, so that the protective member 180 is connected to the second component 130 through the second mounting seat 191, so that the protective member 180 and the first mounting seat 190 and the second mounting seat 191 jointly define a sealed cavity, and the second buffer member 171 is arranged in the sealed cavity to achieve dust and other protection for the second buffer member 171; the shock-absorbing spring 192 is sleeved on the outside of the protective member 180.

[0273] In some embodiments, Figure 18-Figure 20As shown, the first component 120 is a stator component 140, and the second component 130 is a mover component 150. The stator component 140 also includes a stator coil 141 and a stator body 142. The stator body 142 defines a sliding cavity 121. The stator coil 141 is arranged on the inner wall of the sliding cavity 121. The mover component 150 includes a mover body 152 and a mover magnet 151. The mover body 152 is matched with the sliding cavity 121. For example, one end of the sliding cavity 121 in a preset direction has a matching opening 121a, and the mover body 152 is passed through the matching opening 121a, so that a part of the mover body 152 extends into the sliding cavity 121; the mover magnet 151 is arranged on the mover body 152, and at least a part of the mover magnet 151 is located in the sliding cavity 121. When the shock absorber 800 works normally, the stator coil 141 and the movable magnet 151 move relative to each other. The movable magnet 151 cuts the magnetic lines of force, causing the shock absorber 800 to generate a corresponding damping force. The damping force of the vibration reduction system can be controlled by adjusting the current of the stator coil 141.

[0274] It can be understood that during the relative movement of the stator assembly 140 and the mover assembly 150, the mover magnet 151 can always be completely located in the sliding cavity 121, or the mover magnet 151 can switch between a position where it is completely located in the sliding cavity 121 and a position where it is partially located in the sliding cavity 121.

[0275] Of course, the first component 120 can also be a movable component 150, the second component 130 can be a stator component 140, the movable body 152 defines the sliding cavity 121, and the stator body 142 is penetrated into the matching opening 121a.

[0276] Optionally, the mover magnetic steel 151 may include a plurality of annular permanent magnets sequentially arranged along a preset direction.

[0277] The vehicle according to the second aspect of the present invention comprises the shock absorber 800 according to the first aspect of the present invention, wherein one of the stator assembly 140 and the mover assembly 150 is suitable for connection with the wheel of the vehicle, and the other is suitable for connection with the body of the vehicle.

[0278] The vehicle according to the embodiment of the present invention adopts the shock absorber 800, which is beneficial to improving the detection accuracy of the vehicle's own posture, improving comfort, and freeing up a certain space for other components of the vehicle, which is conducive to reasonable layout.

[0279] Other components and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0280] Reference below Figure 17-Figure 21The shock absorber 800 according to the embodiment of the present invention is described in detail with a specific embodiment. It is worth noting that the following description is only for illustrative purposes and is not a specific limitation to the present invention.

[0281] like Figure 17-Figure 21 As shown, the shock absorber 800 includes a stator assembly 140, a movable assembly 150 and a position detection assembly 160, and the stator assembly 140 and the movable assembly 150 are movable and matched in the up-down direction.

[0282] The stator assembly 140 includes a stator coil 141 and a stator body 142. The stator body 142 defines a sliding cavity 121, and the stator body 142 includes a cylinder 1421, a first cover plate 1422 and a second cover plate 1423. The first cover plate 1422 is arranged at the upper end of the cylinder 1421, and the first cover plate 1422 is formed with a matching opening 121a that passes through from top to bottom. The second cover plate 1423 is arranged at the lower end of the cylinder 1421, and the stator coil 141 is arranged on the inner peripheral wall of the cylinder 1421; the stator assembly 150 includes a mover magnet 151 and a mover body 152, the mover magnet 151 is arranged on the mover body 152, and a cavity 131 is defined in the mover assembly 150, the cavity 131 includes a first chamber 131c and a second chamber 131d, the first chamber 131c is located at the lower side of the second chamber 131d, and a connecting port 131a is formed at the lower end of the first chamber 131c to connect the first chamber 131c and the sliding chamber 121, and a mounting port 131b is formed at the upper end of the second chamber 131d. Among them, the cross-sectional area of ​​the first chamber 131c is greater than the cross-sectional area of ​​the second chamber 131d and the opening area of ​​the matching port 121a, the opening area of ​​the connecting port 131a is basically consistent with the cross-sectional area of ​​the first chamber 131c, and the cross-sectional areas of the first chamber 131c and the second chamber 131d are both perpendicular to the preset direction; during the relative movement of the stator assembly 140 and the mover assembly 150, the first chamber 131c is always located in the sliding cavity 121 and the second chamber 131d is penetrated through the matching port 121a, that is, the first chamber 131c is always located on the lower side of the first cover plate 1422.

[0283] The stator body 142 further includes a push rod 1424 , which is disposed on the lower side of the second cover plate 1423 and fixedly connected to the second cover plate 1423 . The push rod 1424 is suitable for being connected to a wheel of a vehicle.

[0284] The position detection component 160 is arranged in the cavity 131. The position detection component 160 is a laser sensor and is used to detect the position of the mover component 150 relative to the stator component 140 in the up and down directions; the position detection component 160 includes a signal transmitter 162 and a signal receiver 163. The signal transmitter 162 and the signal receiver 163 are integrated and are both arranged at the installation port 131b. A signal reflector 164 is provided on the inner wall of the second cover plate 1423. The signal reflector 52 is used to reflect the laser detection signal emitted by the signal transmitter 162 toward the signal receiver 163.

[0285] The shock absorber 800 further includes a first buffer 170, a second buffer 171, a protective member 180, a first mounting seat 190, a second mounting seat 191 and a shock absorbing spring 192. The first buffer 170 is fixed to the inner wall of the first cover plate 1422 and is arranged around the matching opening 121a, so that the first buffer 170 is sleeved outside the second chamber 131d. The first buffer 170 is suitable for directly or indirectly abutting against the mover body 152 to achieve position limiting protection; the second buffer 171 is fixed to the second mounting seat 191 and surrounds the second chamber 131d. The outer peripheral wall of the second buffer member 171 is located outside the sliding cavity 121 and is suitable for directly or indirectly abutting against the first cover plate 1422 to achieve position limiting protection; the protective member 180 is arranged around the second buffer member 171, and the two ends of the protective member 180 are respectively fixedly connected to the first mounting seat 190 and the second mounting seat 191, the first mounting seat 190 is fixed to the stator assembly 140, the second mounting seat 191 is fixed to the mover assembly 150, and the damping spring 192 is sleeved outside the protective member 180 and abutted between the first mounting seat 190 and the second mounting seat 191. Of course, the first buffer member 170 can also be arranged on the mover body 152, and the second buffer member 171 can also be arranged on the stator body 142.

[0286] The second mounting seat 191 includes a seat body 1911, a mounting plate 1912 and a bushing 1913. The seat body 1911 is arranged around the bushing 1913. The mounting plate 1912 is arranged between the seat body 1911 and the bushing 1913. The bushing 1913 is arranged around the outer peripheral wall of the second chamber 131d. The mover body 152 is pressed onto the mounting plate 1912 through the bushing 1913 and the clamping nut 193.

[0287] It is understandable that when the shock absorber 800 leaves the factory or replaces parts (or the threshold value is set and directly handed over to the sensor and controller for self-learning), the initial height measurement and setting of the vehicle are completed as the initial reference position of the vehicle.

[0288] This application utilizes the hollow space inside the mover assembly 150 through a clever design, and uses a laser sensor with high measurement accuracy to make up for the various shortcomings of traditional automobile suspension sensors. It has advantages in layout space, measurement accuracy, measurement content, service life, maintenance convenience and many other aspects. Among them, the above-mentioned settings of this application are applicable to the shock absorber 800 without a medium (such as oil, etc.) in the middle. This application only uses electromagnetic suspension (i.e. electromagnetic shock absorber) as an example to illustrate the working method and principle. In actual use, all electromagnetic suspensions (cylinder type, plate type, etc.) and air suspensions (air shock absorbers) with space in the middle and no reflective medium are applicable to the above-mentioned settings of this application. That is to say, the shock absorber 800 in this application is not limited to electromagnetic shock absorbers, and can also be other types of shock absorbers, such as air shock absorbers, etc.

[0289] The following briefly describes the measurement of various parameters when the shock absorber 800 is used in a vehicle:

[0290] Distance measurement: When the vehicle is moving, the signal transmitter 162 transmits a detection signal, and the detection signal passes through the connecting port 131a to reach the signal reflector 164 to be reflected back to the signal receiver 163. By comparing and calculating the functions, the distance from the signal reflector 164 to the integrated structure of the signal transmitter 162 and the signal receiver 163 can be obtained. By comparing the initial position, the movement stroke (i.e., the suspension stroke) of the stator assembly 140 relative to the mover assembly 150 can be obtained. The posture of the vehicle at this time can be easily calculated through the different distance functions of the four wheels, thereby providing a reference for the active suspension (electromagnetic suspension or air suspension) to correct the vehicle posture.

[0291] Speed ​​and acceleration measurement: Since the position detection component 160 is an active measurement sensor with a high measurement frequency, the suspension height (distance) parameters can be obtained in real time. Low-frequency vibration and even the stationary state of the vehicle will not affect the measurement parameters. Therefore, the position detection component 160 can not only be used to measure the suspension stroke, but also can easily obtain the suspension movement speed (i.e., the movement speed of the stator component 140 relative to the mover component 150) through the functional relationship between the difference in suspension stroke and time. The real-time deceleration of the vehicle can be calculated by comparing the suspension movement speed with the time function again. In theory, the number of vehicle sensors can be greatly reduced to achieve the purpose of intensive design.

[0292] Measurement of vehicle load parameters in a stationary state: Since the position detection component 160 is an active measurement sensor, it can still provide good information such as the vehicle posture when the vehicle is stationary. By comparing the initial state of the vehicle, the load of different axes of the vehicle can be preliminarily calculated. The basic principle is as follows: Measure the height of the four wheels of the vehicle when the vehicle starts or is about to move. At this time, the vehicle has no relative motion and road impact, and the distance change can be regarded as the load compression damping. Based on this, the empty or fully loaded state of the vehicle can be judged, so it can provide a more accurate reference for four-wheel control.

[0293] The technical solutions disclosed in the fifth to seventh embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0294] First, refer to Figure 22 to Figure 25 , an embodiment of the present application provides a linear motor, including a housing, a center guide shaft 903, a position indicating unit and a position sensing unit. The center guide shaft 903 is disposed in the housing and can move axially relative to the housing. The position indicating unit is disposed on the center guide shaft 903. The position sensing unit is disposed on the housing and passes through the housing. The position indicating unit is used to indicate the specific position of the center guide shaft 903 relative to the housing and can be detected by the position sensing unit. The position sensing unit and the position indicating unit can adopt a combination of a detection member and a detected member in a common position detection device, so they are not described in detail herein.

[0295] Among them, in this embodiment, the position sensing unit is arranged on the shell, so that the position sensing unit no longer occupies the axial arrangement space of the linear motor. The overall structure is simple and compact, and it does not need to move with the center guide shaft 903, which is conducive to the wiring harness arrangement of the position sensing unit, and has higher stability and reliability.

[0296] In addition, the position indication unit is arranged on the central guide shaft, so that the position sensing unit can detect the position indication unit in real time, complete the real-time sensing and recording of the current stroke of the linear motor, facilitate the parametric control of the movement of the linear motor, grasp and adjust the movement position and stroke of the linear motor in real time, and can also cooperate to realize various expansion functions of the linear motor, effectively improving the use efficiency of the linear motor.

[0297] Optionally, there is a gap between the position indicating unit and the position sensing unit so that the position sensing unit can better detect the position indicating unit, and the gap between the two also effectively avoids mutual wear between the position indicating unit and the position sensing unit, thereby extending the service life.

[0298] Optionally, the position sensing unit is a photoelectric position sensing unit, the position indicating unit is a grating, the grating and the central guide shaft 903 are an integral component, or the grating is fixedly connected to the central guide shaft 903. The photoelectric position sensing unit includes a scanning head, and the scanning head can scan the grating in real time to complete the real-time sensing and recording of the next stroke of the linear motor.

[0299] Alternatively, if Fig. 22 or Fig.23 As shown, the position sensing unit is an electromagnetic position sensing unit 913 , and the position indicating unit is a rack 910 .

[0300] In this embodiment, when the linear motor reciprocates linearly, the central guide shaft 903 can drive the rack 910 to move, and cut the signal sent by the electromagnetic position sensor unit 913 to generate magnetic field and current changes. At the same time, the electromagnetic position sensor unit 913 can process the signal to identify the current position and movement direction of the rack 910, and feed it back to the control device of the linear motor, so as to realize the parameterized controllable motion stroke function of the linear motor.

[0301] Therefore, this embodiment measures the stroke of the linear motor through the electromagnetic principle, that is, it is detected through the rack cutting magnetic field method, and the overall response speed is faster, the accuracy is higher, and the reliability is stronger.

[0302] Alternatively, if Fig. 22 or Fig.23 As shown, the linear motor also includes a magnetic induction device mounting base 915, which is arranged on the shell, and the electromagnetic position sensor unit 913 is installed on the magnetic induction device mounting base 915, and there is a gap between the electromagnetic position sensor unit 913 and the rack 910.

[0303] In this embodiment, the electromagnetic position sensor unit 913 is installed through the magnetic sensing device mounting seat 915, so that the electromagnetic position sensor unit 913 is more convenient to disassemble and repair when it fails or is damaged.

[0304] In addition, compared with the prior art that uses mechanical contact detection to easily cause wear and consumption, this embodiment adopts the principle of non-contact electromagnetic induction, that is, there is a gap between the electromagnetic position sensing unit 913 and the rack 910, so that there is no contact wear and consumption between the electromagnetic position sensing unit 913 and the rack 910, and the service life is longer.

[0305] Alternatively, if Fig.23As shown, the electromagnetic position sensing unit 913 includes a probe 9131, and the shell is made of steel or other metal or non-metal material, preferably with the ability to shield the magnetic field. The probe 9131 passes through the shell and is inside the shell, which effectively improves the anti-interference ability and measurement accuracy of the probe 9131, and enables the probe 9131 to detect at a close distance with the rack 910.

[0306] Alternatively, if Fig.23 As shown, the rack 910 is provided with a calibration position tooth 9101, and the depth of the calibration position tooth 9101 is different from the depth of other teeth of the rack.

[0307] Specifically, the calibration position tooth 9101 is designed to be near the zero position of the linear motor, so that when the linear motor is performing linear reciprocating motion, that is, the linear motor is within a cycle of power-on operation, the electromagnetic position sensing unit 913 can identify the current position of the linear motor by scanning the calibration position tooth 9101, and implement subsequent real-time position sensing, thereby better realizing the detection of the linear motor and facilitating the expansion of the function of the linear motor.

[0308] Optionally, the rack 910 and the center guide shaft 903 are an integral component, or the rack 910 is fixedly connected to the center guide shaft 903 to simplify the matching relationship between the rack 910 and the center guide shaft 903 and improve assembly efficiency.

[0309] Alternatively, if Fig.23 As shown, the magnetic sensing device mounting seat 915 includes a clamping member and a fastener, the clamping member is used to clamp the electromagnetic position sensing unit 913, and the fastener is used to fasten the electromagnetic position sensing unit 913.

[0310] Specifically, this embodiment facilitates the assembly of the electromagnetic position sensor unit 913 through the provision of clamps and fasteners, which is conducive to reuse. On the other hand, it is also convenient to replace and repair the electromagnetic position sensor unit 913 when it is damaged, thereby reducing the use cost of the linear motor.

[0311] Among them, the fastener described in this embodiment is a fastening bolt 914. Of course, the fastener can also be other fasteners such as screws and rivets, and this application does not make specific restrictions here.

[0312] Alternatively, if Fig. 22 As shown, the shell includes an upper shell 902 and a lower shell 905 , the upper shell 902 is provided with an upper shell connecting block 912 , and the lower shell 905 is provided with a lower shell connecting block 911 , and the upper shell connecting block 912 is detachably connected to the lower shell connecting block 911 .

[0313] In this embodiment, the shell is divided into two parts, an upper part and an lower part, so that the overall structure of the linear motor is divided into blocks, which is convenient for the production and assembly of the linear motor.

[0314] It should be noted that in this embodiment, the upper shell connecting block 912 and the lower shell connecting block 911 are connected by fastening bolts 904. Of course, the upper shell connecting block 912 and the lower shell connecting block 911 can also be connected by other fasteners such as screws and rivets.

[0315] Optionally, the linear motor further includes a stator 906 and a mover 909 , the stator 906 is fixed in the lower housing 905 , the mover 909 is fixed on the central guide shaft 903 , and the position indicating unit is disposed on the mover 909 .

[0316] Specifically, Fig.24 As shown, the position indicating unit in this embodiment is a rack 916, the electromagnetic position sensor unit 917 is installed on a magnetic sensing device mounting base 919, and the fastening bolt 918 is used to fasten the electromagnetic position sensor unit 917. The electromagnetic position sensor unit 917 passes through the shell, and there is a gap between the electromagnetic position sensor unit 917 and the rack 916.

[0317] Therefore, this embodiment sets the rack 916 on the mover 909, so that the electromagnetic position sensing unit 917 can more accurately complete the real-time sensing and recording of the current stroke of the linear motor, and more effectively grasp and adjust the movement position and stroke of the linear motor in real time, which greatly expands the function of the linear motor, such as realizing the damping control of the linear motor, the electromagnetic suspension height compensation of the linear motor, and the side deviation state adjustment of the vehicle body.

[0318] Alternatively, if Figure 22 to Figure 24 As shown, the linear motor is a cylinder-type linear motor.

[0319] Optionally, the linear motor is a plate-type linear motor, and the plate-type linear motor may be a double-plate, triple-plate or other multi-plate linear motor, such as Fig.25 As shown, the plate-type linear motor includes a stator coil 921 and a stator coil mounting plate 922 , and the rack 920 is disposed between the two stator coil mounting plates 922 .

[0320] Alternatively, if Fig. 22 As shown, the linear motor also includes an upper mounting ear 900, a lower mounting ear 908 and a spring 9012. The spring 9012 is installed between the upper mounting ear 900 and the shell, so that the position data measured by the electromagnetic position sensing unit 913 is also equivalent to the compression and rebound position of the spring 9012.

[0321] Alternatively, if Fig. 22 As shown, the linear motor also includes a lower guide shaft 907, which is located inside the shell. One end of the center guide shaft 903 is fixedly connected to the upper mounting ear 900, and the other end of the center guide shaft 903 is slidably connected to the lower guide shaft 907.

[0322] In this embodiment, the central guide shaft 903 is guided by the lower guide shaft 907, so that the linear reciprocating motion of the linear motor is more stable and reliable.

[0323] In a second aspect, in one embodiment, a suspension is provided, the suspension comprising a control system and a linear motor as mentioned in the first aspect.

[0324] In a third aspect, in one embodiment, a vehicle is provided, the vehicle comprising the linear motor as described in the first aspect, or comprising a suspension as described in the second aspect.

[0325] Among them, the position data measured by the electromagnetic position sensing unit in this embodiment is also equivalent to the compression and rebound data of the suspension, so that the control system can calculate the roll of the vehicle at the suspension through the measured position data, and further realize the roll compensation adjustment of the vehicle, that is, realize the linear motor electromagnetic suspension height compensation, and the body side deviation state adjustment and other functions.

[0326] The following content should be integrated into the writing process as needed to explain the relevant content:

[0327] 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 limiting the present invention.

[0328] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0329] In the description of the present invention, "plurality" means two or more.

[0330] In the description of the present invention, a first feature being “on” or “under” 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 with each other but are in contact with each other via another feature therebetween.

[0331] In the description of the present invention, “on”, “over” and “above” a first feature from 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.

[0332] 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 present invention. 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0333] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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), wherein the stator assembly (2) is fixed to the housing; A mover assembly (3), wherein the mover assembly (3) is movable relative to the stator assembly (2) along a first direction, and the mover assembly (3) defines a first regulating chamber (14) and a second regulating chamber (15) between the two ends of the mover assembly (3) and the housing, respectively, and the first regulating chamber (14) and the second regulating chamber (15) are 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), wherein the first housing (12) is arranged at one end of the housing body (11) in the first direction, one end of the mover assembly (3) is arranged in the first housing (12), and defines the first regulating chamber (14) together with the first housing (12); A second shell (13), wherein the second shell (13) is arranged at the other end of the shell body (11) in the first direction, and the other end of the mover assembly (3) is arranged in the second shell (13) and defines a second regulating chamber (15) together with the second shell (13).

3. The linear motor according to claim 2, characterized in that: The mover assembly (3) further comprises: 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), wherein the second piston (32) is arranged at the other end of the mover assembly (3) and defines 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), which is arranged between the movable assembly (3) and the shell body (11) and is used to seal the movable 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 vibration absorber (200) comprises: A main body (201), wherein a cavity is formed in the main body (201); A driving member (202), at least a portion of which is disposed in the cavity and divides the cavity into the third regulating cavity (2011) and the fourth regulating cavity (2012) arranged along a 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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