Linear motor shock absorber and vehicle with same

Abstract

The utility model discloses a linear motor shock absorber and a vehicle with the same, the linear motor shock absorber comprises a first assembly, the first assembly comprises a connecting piece and a motor primary coil, the connecting piece is suitable for being connected with a vehicle body, and the motor primary coil is arranged on the connecting piece; the second assembly comprises a permanent magnet group, the motor secondary is suitable for being connected with a wheel, and the permanent magnet group moves in the direction from the wheel to the vehicle body relative to the primary coil; one end of the elastic piece is connected with the connecting piece, the other end of the elastic piece is connected with the permanent magnet set, and in the direction from the wheel to the vehicle body, the plane where the end, close to the vehicle body, of the motor primary coil is located is a first plane, and the plane where the end, close to the wheel, of the motor primary coil is located is a second plane; one end of the elastic piece is located between the first plane and the second plane. According to the linear motor shock absorber, a vehicle can be better buffered and damped, the linear motor shock absorber is more convenient to install and arrange in the vehicle, and the linear motor shock absorber is wider in applicability.

Description

Technical Field

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

[0002] During driving, vehicles are often affected by road conditions or frequent changes in working conditions, causing bumps and shakes, which makes the riding experience of drivers and passengers poor. Therefore, vehicles usually set up shock-absorbing suspensions between wheels (or axles) and body (or frame) to reduce the vibration from the wheels and reduce the vibration of the body, maintain the stability of the vehicle body, and maintain a good riding experience for drivers and passengers. Existing shock absorbers mainly include two types: passive shock absorbers and linear motor shock absorbers. Linear motor shock absorbers suppress the impact force of the road on the body and the tilting force of the body by force suppression, so that the vehicle always maintains the best shock absorption state during driving. Therefore, linear motor shock absorbers are the future development direction of shock absorbers. In related technologies, the arrangement of linear motor shock absorbers in vehicles is relatively limited, and the shock absorption effect is poor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a linear motor damper, which makes it more convenient to install and arrange the linear motor damper in a vehicle and has wider applicability.

[0004] The utility model also provides a vehicle with the linear motor shock absorber.

[0005] According to the first aspect of the utility model, the linear motor vibration absorber comprises:

[0006] A first component, the first component includes a connecting member and a primary coil of a motor, the connecting member is suitable for connecting to a vehicle body, the primary coil of the motor is arranged on the connecting member and is suitable for being electrically connected to an external power supply to generate a magnetic field; a second component, the second component includes a permanent magnet group, the permanent magnet group and the primary coil of the motor are arranged at intervals to form an air gap, the permanent magnet group is suitable for connecting to a wheel, and the permanent magnet group moves relative to the primary coil in the direction from the wheel to the vehicle body; an elastic member, one end of the elastic member is connected to the connecting member, the other end of the elastic member is connected to the permanent magnet group, and in the direction from the wheel to the vehicle body, the plane where the end of the primary coil of the motor close to the vehicle body is located is a first plane, the plane where the end of the primary coil of the motor close to the wheel is located is a second plane, and one end of the elastic member is located between the first plane and the second plane. A first fixing member, the first fixing member is sleeved and connected to the outside of the connecting member; a second fixing member, the second fixing member is connected to the permanent magnet group; one end of the elastic member is fixed to the first fixing member, and the other end of the elastic member is fixed to the second fixing member.

[0007] According to the linear motor shock absorber of the utility model, a first component, a second component and an elastic member are provided, one end of the elastic member is connected to the connecting member in the first component and the other end is connected to the permanent magnet group in the second component, wherein the end of the elastic member connected to the connecting member is located between the first plane and the second plane of the primary coil of the motor in the first component in the direction from the vehicle body to the wheel, so that the linear motor shock absorber has a better buffering and vibration reduction effect on the vehicle, and the linear motor shock absorber is more convenient to install and arrange in the vehicle and has a wider applicability.

[0008] In addition, the linear motor damper according to the utility model may also have the following additional technical features:

[0009] In some embodiments of the present invention, the primary coil of the motor is sleeved on the outside of the permanent magnet group.

[0010] In one embodiment of the utility model, the connecting member is a cylinder, the primary coil of the motor is arranged on the inner wall of the cylinder, and one end of the elastic member is connected to the cylinder at the outer wall of the cylinder.

[0011] In an example of the present utility model, the linear motor shock absorber further includes: a wheel connecting member, the wheel connecting member is connected to the permanent magnet group, and the second fixing member is connected to the wheel connecting member.

[0012] In one embodiment of the utility model, the second component further includes: a push rod, to which the permanent magnet group is fixedly connected, and the other end of the push rod extends out of the cylinder and is suitable for being connected to the wheel.

[0013] In some examples of the present invention, the first component further includes: a guide rod, which is connected to the connecting member and extends in the direction from the wheel to the vehicle body, and a guide hole is formed on the push rod, and the guide rod slides along the inner wall of the guide hole.

[0014] In one example of the utility model, the linear motor shock absorber also includes: a body connector, the body connector is located on the outside of the cylinder, one end of the guide rod extends into the cylinder and fits in the guide hole, and the other end of the guide rod is fixed to the body connector.

[0015] In one example of the utility model, one end of the cylinder close to the vehicle body is a top wall, a first through hole is formed on the top wall, a boss is provided on the guide rod, a part of the guide rod is passed through the first through hole, and the boss is located in the cylinder and connected to the top wall.

[0016] In some examples of the present invention, there are multiple permanent magnet groups, which are arranged at intervals along the circumference of the push rod; there are multiple primary coils of the motor, which are arranged in a one-to-one correspondence with the multiple permanent magnet groups.

[0017] In a specific embodiment of the present utility model, the push rod has multiple first mounting surfaces, the multiple first mounting surfaces are arranged at intervals along the circumference of the push rod, and the multiple permanent magnet groups are arranged on the multiple first mounting surfaces; the cylinder has multiple second mounting surfaces, and the multiple motor primary coils are arranged on the second mounting surfaces; the first mounting surface is arranged parallel to the second mounting surface.

[0018] In a specific example of the present invention, the push rod comprises:

[0019] A first rod portion, the first rod portion is columnar and has a polygonal cross section, and at least part of the side surface of the first rod portion is formed as the first mounting surface; a second rod portion, the second rod portion is connected to the first rod portion, and the second rod portion is suitable for connecting to a wheel.

[0020] Further, the first rod portion is in the shape of an equilateral triangular prism, the second rod portion is in the shape of a cylinder, the first rod portion is coaxial with the second rod portion, and the radial dimension of the second rod portion is smaller than the radial dimension of the first rod portion.

[0021] In some examples of the present invention, the permanent magnet group includes a plurality of permanent magnets, and the plurality of permanent magnets are arranged at intervals along a direction from the vehicle body to the wheel.

[0022] A vehicle according to a second aspect of the utility model includes the linear motor damper according to the first aspect of the utility model.

[0023] According to the vehicle of the utility model, by setting the linear motor shock absorber of the first aspect mentioned above, a first component, a second component and an elastic member are set, one end of the elastic member is connected to the connecting member in the first component and the other end is connected to the permanent magnet group in the second component, wherein the end of the elastic member connected to the connecting member is located between the first plane and the second plane of the primary coil of the motor in the first component in the direction from the vehicle body to the wheel, so that the linear motor shock absorber has a better buffering and vibration reduction effect on the vehicle, and the linear motor shock absorber is more convenient to install and arrange in the vehicle and has a wider applicability.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of a linear motor vibration absorber according to an embodiment of the utility model;

[0026] Figure 2 is a cross-sectional view of a linear motor vibration absorber according to an embodiment of the utility model;

[0027] Figure 3 yes Figure 1 A cross-sectional view of the linear motor damper from another angle is shown.

[0028] Description of Reference Numerals

[0029] 10. Body connector; 11. Connecting studs;

[0030] 20. first component; 21. cylinder; 22. primary coil of motor; 23. guide rod; 231. boss;

[0031] 30. Second component; 31. Permanent magnet group; 32. Push rod; 321. First rod portion; 322. Second rod portion; 301. Guide hole;

[0032] 40, elastic member; 50, first fixing member; 51, first boss; 60, second fixing member; 61, second boss; 62, matching hole; 70, wheel connecting member; 80, connecting plate; 81, matching boss;

[0033] 100. Linear motor vibration absorber. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Reference below Figure 1-Figure 3 A linear motor vibration absorber 100 according to an embodiment of the first aspect of the present utility model is described.

[0036] like Figure 1-Figure 3 As shown, the linear motor vibration absorber 100 according to the first embodiment of the utility model includes: a first component 20, a second component 30 and an elastic member 40.

[0037] Specifically, the first component 20 includes a connector and a motor primary coil 22, the connector is suitable for being connected to the vehicle body, the motor primary coil 22 is arranged on the connector and is suitable for being electrically connected to an external power supply to generate a magnetic field; the second component 30 includes a permanent magnet group 31, the permanent magnet group 31 and the motor primary coil 22 are spaced apart to form an air gap, the permanent magnet group 31 is suitable for being connected to the wheel, and the permanent magnet group 31 moves in the direction from the wheel to the vehicle body relative to the primary coil; one end of the elastic member 40 is connected to the connector, and the other end of the elastic member 40 is connected to the permanent magnet group 31, and in the direction from the wheel to the vehicle body, the plane where the end of the motor primary coil 22 close to the vehicle body is located is the first plane, and the plane where the end of the motor primary coil 22 close to the wheel is located is the second plane, and one end of the elastic member 40 is located between the first plane and the second plane.

[0038] The linear motor shock absorber 100 of this embodiment is provided with a motor primary coil 22 and a permanent magnet group 31 spaced apart from the motor primary coil 22 to form an air gap. The motor primary coil 22 and the permanent magnet group 31 can form a linear motor structure. After an external power supply is electrically connected to the motor primary coil 22, the motor primary coil 22 generates a magnetic field and then drives the permanent magnet group 31 to move in the direction from the wheel to the vehicle body through electromagnetic action, thereby maintaining or adjusting the relative position of the motor primary coil 22 and the permanent magnet group 31 in the direction from the vehicle body to the wheel.

[0039] It is understandable that the linear motor damper 100 needs to be installed between the vehicle body and the wheel to achieve the support of the wheel on the vehicle body and the vibration reduction effect of the linear motor damper 100 on the vehicle body. When the linear motor damper 100 is installed in the vehicle, the connecting piece of the linear motor damper 100 is connected to the vehicle body, the permanent magnet group 31 is connected to the wheel, and the elastic member 40 is connected between the connecting piece and the permanent magnet group 31. The load of the vehicle body is transmitted to the wheel through the connecting piece, the elastic member 40 and the permanent magnet group 31, so that the wheel bears the load of the vehicle. In this way, under normal circumstances, the linear motor damper 100 does not need to energize the motor primary coil 22 to maintain the relative position between the motor primary coil 22 and the permanent magnet group 31 to carry the load of the vehicle, thereby saving the energy consumption of the linear motor damper 100 when the vehicle is driving.

[0040] refer to Figure 2 As shown, the primary coil 22 of the motor is fixed on the connecting piece. When the external power supply supplies power to the primary coil 22 of the motor, the permanent magnet group 31 moves in the direction from the wheel to the vehicle body, so that the Z-axis height between the wheel and the vehicle body can be changed. In this way, the linear motor shock absorber 100 can adjust the current passed into the primary coil 22 of the motor according to the direction and amplitude of the wheel jumping when the vehicle is bumpy, and then control the moving direction and moving distance of the permanent magnet group 31 to be opposite thereto, thereby actively attenuating the vibration and restoring the stability of the vehicle body as soon as possible.

[0041] The present invention is based on the discovery of the following facts and problems by the inventor of the present application:

[0042] Since the linear motor shock absorber is arranged between the vehicle body and the wheel, the Z-direction arrangement space of the linear motor shock absorber in the vehicle is relatively limited, and the spring structure in the linear motor shock absorber is usually arranged below the shock absorber, which makes the installation and arrangement of the linear motor shock absorber in the vehicle relatively inconvenient. At the same time, the spring structure makes the Z-direction travel of the linear motor shock absorber shorter and the vibration reduction and buffering effect is poor.

[0043] Since one end of the elastic member 40 is connected to the permanent magnet group 31, and the other end of the elastic member 40 is connected between the first plane and the second plane where the two ends of the motor primary coil 22 are located, that is, the elastic member 40 and the motor primary coil 22 partially overlap when arranged in the Z-direction arrangement space between the wheel and the body. Since the linear motor shock absorber 100 is installed and arranged between the wheel and the body of the vehicle, the Z-direction arrangement space between the wheel and the body is relatively narrow and tight. By partially overlapping the elastic member 40 with the connecting member in the Z-direction arrangement space, the difficulty of arranging the linear motor shock absorber 100 in the Z-direction between the wheel and the body can be greatly reduced, making the linear motor shock absorber 100 more convenient to arrange in the vehicle.

[0044] At the same time, in the relatively limited Z-direction arrangement space between the wheel and the vehicle body, the motor primary coil 22 and the permanent magnet group 31 in the linear motor shock absorber 100 can be arranged longer in the Z-direction, so that the linear motor shock absorber 100 has a longer control stroke. In this way, the linear motor shock absorber 100 can meet the height adjustment of the vehicle body in a larger range, thereby making the linear motor shock absorber 100 more widely applicable.

[0045] When the vehicle is traveling at high speed, the vehicle body needs to be lowered to reduce the wind resistance of the vehicle during driving, so as to improve the stability of high-speed driving. At this time, the linear motor shock absorber 100 can actively control the movement of the permanent magnet group 31 to reduce the Z-direction height between the wheel and the vehicle body, thereby realizing the adjustment of the height, softness and hardness of the vehicle, and can flexibly and effectively control and adjust the comfort, handling and passability of the vehicle.

[0046] According to the linear motor shock absorber 100 of the embodiment of the utility model, by setting a first component 20, a second component 30 and an elastic member 40, one end of the elastic member 40 is connected to the connecting member in the first component 20 and the other end is connected to the permanent magnet group 31 in the second component 30, wherein the end of the elastic member 40 connected to the connecting member is located between the first plane and the second plane of the motor primary coil 22 in the first component 20 in the direction from the vehicle body to the wheel, so that the linear motor shock absorber 100 has a better buffering and vibration reduction effect on the vehicle, and the linear motor shock absorber 100 is more convenient to install and arrange in the vehicle and has a wider applicability.

[0047] In some embodiments of the present invention, Figure 2 As shown, the motor primary coil 22 can be sleeved on the outside of the permanent magnet group 31. In this way, the magnetic field generated by the motor primary coil 22 after power-on can better act on the permanent magnet group 31, so that the cooperation between the motor primary coil 22 and the permanent magnet group 31 is more stable and reliable.

[0048] In one embodiment of the present invention, Figure 2 As shown, the connecting member can be a cylinder 21, the motor primary coil 22 is arranged on the inner wall of the cylinder 21, and one end of the elastic member 40 is connected to the cylinder 21 at the outer wall of the cylinder 21. Therefore, by arranging the motor primary coil 22 on the inner wall of the cylinder 21, the motor primary coil 22 can be fixed more firmly and reliably. At the same time, the cylinder 21 can play a good protective role for the motor primary coil 22, so that the linear motor shock absorber 100 can be used and operated more stably and reliably. One end of the elastic member 40 is connected and fixed to the outer wall of the cylinder 21, and the elastic member 40 and the cylinder 21 are easy to assemble. After the linear motor shock absorber 100 is assembled in the vehicle, the load of the vehicle body can be transferred to the elastic member 40 through the cylinder 21 in a relatively stable manner.

[0049] In some embodiments of the present invention, Figure 1 As shown, heat dissipation ribs may be formed on the outer circumferential surface of the cylinder 21. This allows the linear motor damper to have good heat dissipation, thereby making the linear motor damper more stable and reliable when used.

[0050] In some examples of the present invention, Figure 1 As shown, the linear motor damper 100 may also include: a first fixing member 50 and a second fixing member 60. Specifically, the first fixing member 50 is sleeved and connected to the outside of the cylinder 21; the second fixing member 60 is connected to the permanent magnet group 31; one end of the elastic member 40 is fixed to the first fixing member 50, and the other end of the elastic member 40 is fixed to the second fixing member 60. Therefore, the first fixing member 50 and the second fixing member 60 are provided to connect and fix the two ends of the elastic member 40, and the first fixing member 50 and the second fixing member 60 can play a good role in limiting and fixing the elastic member 40, making the installation and fixation of the elastic member 40 more convenient and reliable. Preferably, the elastic member 40 can be a spring.

[0051] In one example of the present invention, Figure 2As shown, the first fixing member 50 may be formed with a first boss 51 extending in the circumferential direction of the cylinder 21, and the second fixing member 60 may be formed with a second boss 61 arranged opposite to the first boss 51. In this way, the two ends of the elastic member 40 can be matched and fixed with the first boss 51 and the second boss 61, so that the first boss 51 and the second boss 61 play a role in radial limiting and fixing the elastic member 40, thereby making the elastic member 40 more stable and reliable after being assembled in the linear motor damper 100, so that the linear motor damper 100 is more stable and reliable when used in a vehicle.

[0052] Preferably, the outer circumference of the first boss 51 can be set to be coplanar with the outer circumference of the second boss 61, the first fixing member 50 is fixed by clamping with the spring, and the side surface of the first fixing member 50 clamping with the spring is suitable for matching with the end surface structure of the spring, and the second fixing member 60 is fixed by clamping with the spring, and the side surface of the second fixing member 60 clamping with the spring is suitable for matching with the end surface structure of the spring. It can be understood that the position of the first fixing member 50 in the direction of the central axis of the cylinder 21 can be determined according to actual needs.

[0053] In one embodiment of the present invention, Figure 2 As shown, the second component 30 may also include: a push rod 32, a permanent magnet group 31 is fixedly connected to the push rod 32, and the other end of the push rod 32 extends out of the cylinder 21 and is suitable for connecting to the wheel. Thus, the cylinder 21 is connected to the vehicle body, the push rod 32 is connected to the wheel, the motor primary coil 22 is fixed in the cylinder 21, and the permanent magnet group 31 is fixed on the push rod 32, so that after the motor primary coil 22 is energized, the Z-direction height control of the wheel and the vehicle body can be more direct with the permanent magnet group 31, so that the linear motor shock absorber 100 responds faster to the bump vibration of the vehicle, and further makes the linear motor shock absorber 100 more reliable in reducing the vibration of the vehicle.

[0054] In some examples of the present invention, Figure 2 As shown, the first component 20 may further include: a guide rod 23 , which is connected to the connecting piece and extends from the wheel to the vehicle body, a guide hole 301 is formed on the push rod 32 , and the guide rod 23 slides along the inner wall of the guide hole 301 .

[0055] Therefore, the guide rod 23 is inserted into the guide hole 301, which can play a good guiding role for the movement of the cylinder 21 and the push rod 32 and other components when the linear motor shock absorber 100 is running, thereby improving the running stability and reliability of the linear motor shock absorber 100, and facilitating the assembly and positioning of the linear motor shock absorber 100. During assembly, the motor primary coil 22 is fixed to the cylinder 21 and the guide rod 23, the permanent magnet group 31 is fixed to the push rod 32 and inserted with the push rod 32 on the side of the motor primary coil 22 facing the central axis of the guide rod 23, so that the guide rod 23 fixed to the cylinder 21 is inserted into the guide hole 301 of the push rod 32, the elastic member 40 is sleeved on the outside of the cylinder 21, one end of the elastic member 40 is connected to the cylinder 21 through the first fixing member 50, and the other end of the elastic member 40 is fixedly connected to the push rod 32 through the second fixing member 60, thereby completing the assembly of the linear motor shock absorber 100.

[0056] Preferably, the guide rod 23 and the guide hole 301 are provided with a sliding sleeve.

[0057] In one example of the present invention, Figure 2 As shown, the linear motor shock absorber 100 may also include: a wheel connector 70, the wheel connector 70 is connected to the permanent magnet group 31, and the second fixing member 60 is connected to the wheel connector 70. Specifically, the wheel connector 70 is connected to the suspension arm, and the suspension arm is further connected to the wheel, and the other end of the push rod 32 is provided with a threaded column, and the threaded column passes through the fixing hole and is fixedly connected to the wheel connector 70 through a nut. Therefore, the wheel connector 70 is provided, the wheel connector 70 is connected to the permanent magnet group 31 and the second fixing member 60, and the wheel connector 70 is further connected to the wheel through the suspension arm, so that the permanent magnet group 31 and the second fixing member 60 are more convenient to connect and assemble.

[0058] At the same time, when the linear motor shock absorber 100 needs to adjust the Z-direction height, the permanent magnet group 31 fixed at one end of the push rod 32 can be controlled to move axially along the guide rod 23, thereby driving the push rod 32 connected and fixed to the permanent magnet group 31 to move axially along the guide rod 23, thereby realizing the adjustment of the Z-direction height between the vehicle body and the wheel. The linear motor shock absorber 100 has a more direct control over the Z-direction height between the vehicle body and the wheel, and a faster response speed, thereby facilitating rapid vibration reduction of the vehicle and improving the riding experience of the driver and passengers.

[0059] Preferably, if Figure 2 As shown, the wheel connector 70 may be a U-shaped plate, the opening of the U-shaped plate is downward, the top plate of the U-shaped plate is formed with a fixing hole, one end of the side plate of the U-shaped plate is connected to the top plate, and the other end of the side plate extends downward away from the push rod 32. Preferably, the U-shaped plate is a mounting fork.

[0060] In one example of the present invention, Figure 2As shown, the linear motor damper 100 may also include: a body connector 10, the body connector 10 is located outside the cylinder 21, one end of the guide rod 23 extends into the cylinder 21 and fits in the guide hole 301, and the other end of the guide rod 23 is fixed to the body connector 10. Since the cross-sectional area of ​​the cylinder 21 perpendicular to the axial direction of the guide rod 23 is larger than the cross-sectional area of ​​the guide rod 23, the cylinder 21 is fixedly connected to the other end of the guide rod 23, and the other end of the guide rod 23 extends out of the cylinder 21 and is connected to the vehicle body through the body connector 10, so that a larger assembly space is provided at the vehicle body connector 10, so that the linear motor damper 100 is more convenient to operate when connected to the vehicle body.

[0061] Furthermore, the vehicle body connector 10 may be provided with a plurality of connecting studs 11, which are arranged at intervals along the circumference of the guide rod 23 for connection with the vehicle body. Furthermore, the vehicle body connector 10 is fixed to the guide rod 23 by threaded connection.

[0062] In one example of the present invention, Figure 2 As shown, the end of the cylinder 21 close to the vehicle body is a top wall, and a first through hole may be formed on the top wall. A boss 231 is provided on the guide rod 23, and part of the guide rod 23 is passed through the first through hole. The boss 231 is located in the cylinder 21 and connected to the top wall. Thus, the guide rod 23 is connected to the cylinder 21 through the boss 231, so that the connection between the guide rod 23 and the cylinder 21 is stable and reliable, so that the load transfer between the guide rod 23 and the cylinder 21 is more stable and reliable, thereby improving the support stability of the linear motor shock absorber 100 to the vehicle body. Further, the boss 231 is connected and fixed to the cylinder 21 by fasteners, which facilitates the assembly and disassembly of the linear motor shock absorber 100. Preferably, the boss 231 surface where the boss 231 abuts against the top wall of the cylinder 21 can be a stepped structure, and the top wall of the cylinder 21 is correspondingly formed with an abutting surface that matches the boss 81231 surface.

[0063] In some examples of the present invention, reference Figure 2As shown, the linear motor shock absorber 100 may also include: a connecting plate 80, the connecting plate 80 is formed with a through hole that passes through the connecting plate 80 along the thickness direction, the connecting plate 80 is sleeved on the threaded column through the through hole, and is located on the side of the wheel connecting member 70 facing the cylinder 21, the outer periphery of the connecting plate 80 extends to the side surface of the second fixing member 60 that is away from the first fixing member 50, and the second fixing member 60 is fixedly connected to the push rod 32 through the connecting plate 80. Thus, the wheel connector 70 is connected and fixed to the second fixing member 60, the connecting plate 80 and the push rod 32 to form a whole. At the same time, the second fixing member 60 is connected and fixed to the first fixing member 50 on the cylinder 21 through a spring, so that the load of the vehicle body can be stably transferred to the wheel through the vehicle body connector 10, the cylinder 21, the first fixing member 50, the spring, the second fixing member 60, the connecting plate 80 and the wheel connector 70. The connecting plate 80 and the second fixing member 60 connected and fixed to the wheel connector 70 have better overall structural strength, so that the linear motor shock absorber 100 supports and transfers load to the vehicle more stably. At the same time, the combination of the second fixing member 60, the connecting plate 80 and the wheel connector 70 is conducive to the lightweight design of the linear motor shock absorber 100.

[0064] Furthermore, the second fixing member 60 is formed with a mating hole 62 which penetrates axially along the second fixing member 60, and the central axis of the mating hole 62 is arranged colinearly with the axis of the push rod 32. The connecting plate 80 is formed with a mating boss 81, and the mating boss 81 is formed by a protrusion from the side of the connecting plate 80 away from the second fixing plate toward the mating hole 62. The mating hole 62 is suitable for sleeved with the mating boss 81, so that the assembly and positioning can be more convenient when the connecting plate 80 is fixedly connected to the second fixing member 60.

[0065] In some examples of the present invention, reference Figure 3 As shown, there can be multiple permanent magnet groups 31, which are arranged at intervals along the circumference of the push rod 32; there can be multiple motor primary coils 22, which are arranged one-to-one with the multiple permanent magnet groups 31. Therefore, multiple pairs of motor primary coils 22 and permanent magnet groups 31 are provided, so that the thrust of the linear motor damper 100 is greater, thereby making the use range of the linear motor damper 100 wider and more applicable. Figure 3 As shown, there are three permanent magnet groups 31, and three corresponding motor primary coils 22. Of course, the number of motor primary coils 22 and motor secondary coils of the linear motor shock absorber 100 can be reasonably set according to the vibration reduction requirements of the actual installed vehicle to meet the vibration reduction requirements of different vehicle models.

[0066] In a specific embodiment of the present invention, reference Figure 2 and Figure 3As shown, the push rod 32 may have a plurality of first mounting surfaces, the plurality of first mounting surfaces are arranged at intervals along the circumference of the push rod 32, and the plurality of permanent magnet groups 31 are arranged on the plurality of first mounting surfaces; the cylinder 21 has a plurality of second mounting surfaces, and the plurality of motor primary coils 22 are arranged on the second mounting surfaces; the first mounting surface is arranged in parallel with the second mounting surface. Thus, the first mounting surface and the second mounting surface are arranged to facilitate the installation and fixation of the permanent magnet group 31 and the motor primary coil 22. At the same time, the parallel arrangement of the first mounting surface and the second mounting surface can make the assembly and positioning of the motor primary coil 22 and the permanent magnet group 31 more convenient and reliable.

[0067] In a specific example of the present invention, Figure 2 As shown, the push rod 32 may include: a first rod portion 321 and a second rod portion 322. Specifically, the first rod portion 321 is columnar and has a polygonal cross section, and at least part of the side surface of the first rod portion 321 is formed as a first mounting surface; the second rod portion 322 is connected to the first rod portion 321, and the second rod portion 322 is suitable for connecting to the wheel. Further, the cross section of the first rod portion 321 is equal everywhere along the axial direction of the push rod 32. The cross section of the first rod portion 321 refers to the radial cross section of the first rod portion 321. The first rod portion 321 is set to be columnar and has a polygonal cross section, so that the side surface of the first rod portion 321 is formed into a plurality of first mounting surfaces along the axial direction of the push rod 32, and the first mounting surface is a plane, so that the permanent magnet group 31 is more convenient and stable when it is installed and fixed on the first mounting surface of the first rod portion 321.

[0068] Furthermore, if Figure 3 As shown, the first rod portion 321 may be in the shape of an equilateral triangular prism, the second rod portion 322 may be in the shape of a cylinder, the first rod portion 321 and the second rod portion 322 are coaxial, and the radial dimension of the second rod portion 322 is smaller than the radial dimension of the first rod portion 321. Thus, the first rod portion 321 is set in the shape of an equilateral triangular prism, and the first rod portion 321 and the second rod portion 322 are arranged coaxially, so that the overall structure of the push rod 32 is more stable, so that the structural arrangement stability of the linear motor vibration absorber 100 is better, and the linear motor vibration absorber 100 can better withstand forces in all directions, so that the overall structure of the linear motor vibration absorber 100 is more stable. The radial dimension of the second rod portion 322 is smaller than the radial dimension of the first rod portion 321, so that the overall structure of the push rod 32 in the direction of the central axis of the linear motor vibration absorber 100 can be more compact, while reducing the overall weight of the push rod 32, and making the assembly space of the connection position of the push rod 32 and the second fixing member 60 larger, so as to facilitate the assembly operation of the linear motor vibration absorber 100.

[0069] In some examples of the present invention, reference Figure 2 As shown, the permanent magnet group 31 may include a plurality of permanent magnets, and the plurality of permanent magnets are arranged at intervals along a direction from the vehicle body to the wheel.

[0070] refer to Figure 2 As shown, multiple permanent magnets are arranged at intervals along the direction from the vehicle body to the wheel, forming N-pole and S-pole magnetic fields spaced along the length direction of the guide rod 23. Multiple windings of the motor primary coil 22 form N-pole and S-pole magnetic fields after current is passed through them. The magnetic fields of the motor primary coil 22 and the permanent magnets repel or attract each other, so that the permanent magnet group 31 can stably move upward or downward along the axial direction of the guide rod 23. When the direction of the current passed through the motor primary coil 22 changes, the corresponding force direction of the permanent magnet changes, so that the permanent magnet group 31 can move in the opposite direction. Therefore, the linear motor damper 100 can conveniently and quickly control the direction and distance of the push rod 32 moving along the central axis direction of the cylinder 21, so that the linear motor damper 100 is more flexible and convenient for damping the vehicle.

[0071] When the vehicle is traveling under good road conditions, the elastic member 40 can have a good vibration reduction and buffering effect on the vehicle. The motor primary coil 22 does not need to be energized for active vibration reduction. At this time, the vehicle has a small high-frequency vibration when traveling. The permanent magnet group 31 can follow the high-frequency vibration of the wheel and the elastic member 40 and form a relative high-frequency and small-amplitude movement with the motor primary coil 22. It can be understood that the cooperation between the motor primary coil 22 and the permanent magnet group 31 structure is designed according to the principle of electromagnetic induction. During the up and down movement of the permanent magnet group 31, the motor primary coil 22 will cut the magnetic flux lines generated by the permanent magnets in the permanent magnet group 31 to generate induced current and electromagnetic damping. The induced current can be stored in the battery system of the vehicle through rectification to power other electrical appliances of the vehicle, and the electromagnetic damping can play a role in vibration reduction, thereby further enhancing the vibration reduction effect of the linear motor shock absorber 100 on the vehicle, making the vehicle more stable during driving and providing a better riding experience for the driver and passengers.

[0072] Reference below Figure 1-Figure 3 A vehicle according to an embodiment of the second aspect of the utility model is described.

[0073] As shown in FIG. 1 , a vehicle according to an embodiment of the present utility model includes a linear motor damper 100 according to an embodiment of the first aspect of the present utility model.

[0074] According to the vehicle of the embodiment of the utility model, by setting the linear motor shock absorber 100 of the first aspect embodiment mentioned above, a first component 20, a second component 30 and an elastic member 40 are set, one end of the elastic member 40 is connected to the connecting member in the first component 20 and the other end is connected to the permanent magnet group 31 in the second component 30, wherein the end of the elastic member 40 connected to the connecting member is located between the first plane and the second plane of the motor primary coil 22 in the first component 20 in the direction from the vehicle body to the wheel, so that the linear motor shock absorber 100 has a better buffering and vibration reduction effect on the vehicle, and the linear motor shock absorber 100 is more convenient to install and arrange in the vehicle and has a wider applicability.

[0075] The following will refer to Figure 1-Figure 3 A vehicle according to a specific embodiment of the present invention is described.

[0076] like Figure 1-Figure 3 As shown, the vehicle includes a linear motor shock absorber 100, a vehicle body and a wheel. The linear motor shock absorber 100 is installed and fixed between the vehicle body and the wheel to play a vibration reduction role. The linear motor shock absorber 100 is fixed on the wheel by connecting with the suspension arm.

[0077] The linear motor damper 100 includes a first component 20, a second component 30, an elastic member 40, a first fixing member 50, a second fixing member 60, a body connecting member 10, a wheel connecting member 70 and a connecting plate 80. The first component 20 includes a connecting member, a motor primary coil 22 and a guide rod 23, and the second component 30 includes a permanent magnet group 31 and a push rod 32. The connecting member is a cylinder 21, the vehicle body connecting member 10 is connected and fixed to one end of the guide rod 23, the motor primary coil 22 is fixed on the cylinder 21, the cylinder 21 has a first through hole penetrating the top wall of the cylinder 21, the push rod 32 includes a first rod portion 321 and a second rod portion 322, the first rod portion 321 and the second rod portion 322 are coaxially arranged, the first rod portion 321 has a guide hole 301 extending along the axial direction of the guide rod 23, the other end of the guide rod 23 passes through the first through hole and is inserted into the guide hole 301, the guide rod 23 has a boss 231, the boss 231 is located in the cylinder 21 and is fixedly connected to the top wall of the cylinder 21 by a fastener; the first rod portion 321 is an equilateral triangular prism, each side surface is formed as a first mounting surface for fixing the permanent magnet group 31, the three permanent magnet groups 31 are respectively fixed on the side surfaces of the first rod portion 321, the cylinder 21 is correspondingly formed with three second mounting surfaces in the radial direction, and the three motor primary coils 22 are respectively fixed on the second mounting surfaces.

[0078] One end of the second rod portion 322 of the push rod 32 is connected to the first rod portion 321, and the other end of the second rod portion 322 is provided with a threaded column, a through hole is provided on the connecting plate 80, and a fixing hole is formed on the wheel connecting member 70, and the threaded column of the second rod portion 322 passes through the fixing hole and is fixedly connected to the connecting plate 80 by a nut; the first fixing member 50 is annular and sleeved and fixed on the outer side of the cylinder body 21, the first fixing member 50 forms a first boss 231, and the first boss 231 extends along the circumference of the cylinder body 21, the second fixing member 60 is annular and sleeved on the outer side of the second rod portion 322 of the push rod 32 and fixed to the connecting plate 80, the second fixing member 60 forms a second boss 231 arranged axially opposite to the first boss 231 of the push rod 32, and the elastic member 40 is limited and fixed between the first fixing member 50 and the second fixing member 60, and the elastic member 40 is a spring, and both ends of the spring are sleeved on the first boss 231 and the second boss 231.

[0079] According to the linear motor shock absorber 100 of the embodiment of the utility model, by setting a first component 20, a second component 30 and an elastic member 40, one end of the elastic member 40 is connected to the connecting member in the first component 20 and the other end is connected to the permanent magnet group 31 in the second component 30, wherein the end of the elastic member 40 connected to the connecting member is located between the first plane and the second plane of the motor primary coil 22 in the first component 20 in the direction from the vehicle body to the wheel, so that the linear motor shock absorber 100 has a better buffering and vibration reduction effect on the vehicle, and the linear motor shock absorber 100 is more convenient to install and arrange in the vehicle and has a wider applicability.

[0080] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0081] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0082] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0084] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A linear motor damper, characterized in that: include: A first component, the first component comprises a connecting member and a primary coil of a motor, the connecting member is suitable for connecting with a vehicle body, the primary coil of the motor is arranged on the connecting member and is suitable for being electrically connected with an external power source to generate a magnetic field; a second component, the second component comprising a permanent magnet group, the permanent magnet group being spaced apart from the primary coil of the motor to form an air gap, the permanent magnet group being adapted to be connected to a wheel, and the permanent magnet group being movable relative to the primary coil in a direction from the wheel to the vehicle body; an elastic member, one end of which is connected to the connecting member, the other end of which is connected to the permanent magnet group, and in the direction from the wheel to the vehicle body, the plane where the end of the primary coil of the motor close to the vehicle body is located is a first plane, the plane where the end of the primary coil of the motor close to the wheel is located is a second plane, and one end of the elastic member is located between the first plane and the second plane; A first fixing member, the first fixing member is sleeved and connected to the outer side of the connecting member; a second fixing member, the second fixing member being connected to the permanent magnet group; One end of the elastic member is fixed to the first fixing member, and the other end of the elastic member is fixed to the second fixing member.

2. The linear motor damper according to claim 1, characterized in that: The primary coil of the motor is sleeved on the outside of the permanent magnet group.

3. The linear motor damper according to claim 2, characterized in that: The connecting member is a cylinder, the primary coil of the motor is arranged on the inner wall of the cylinder, and one end of the elastic member is connected to the cylinder at the outer wall of the cylinder.

4. The linear motor vibration absorber according to claim 3, characterized in that: The linear motor shock absorber further includes a wheel connecting member, wherein the wheel connecting member is connected to the permanent magnet group, and the second fixing member is connected to the wheel connecting member.

5. The linear motor vibration absorber according to any one of claims 3 and 4, characterized in that: The second component further comprises: a push rod, to which the permanent magnet group is fixedly connected, and one end of the push rod extends out of the cylinder and is suitable for being connected to the wheel.

6. The linear motor vibration absorber according to claim 5, characterized in that: The first component further includes: a guide rod, which is connected to the connecting member and extends in the direction from the wheel to the vehicle body. A guide hole is formed on the push rod, and the guide rod slides along the inner wall of the guide hole.

7. The linear motor vibration absorber according to claim 6, characterized in that: The linear motor damper also includes a body connector, which is located outside the cylinder, one end of the guide rod extends into the cylinder and fits in the guide hole, and the other end of the guide rod is fixed to the body connector.

8. The linear motor vibration absorber according to claim 6, characterized in that: The end of the cylinder body close to the vehicle body is a top wall, a first through hole is formed on the top wall, a boss is provided on the guide rod, a part of the guide rod is passed through the first through hole, and the boss is located in the cylinder body and connected to the top wall.

9. The linear motor vibration absorber according to claim 5, characterized in that: There are multiple permanent magnet groups, and the multiple permanent magnet groups are arranged at intervals along the circumference of the push rod; The number of the primary coils of the motor is multiple and they are arranged in one-to-one correspondence with the multiple permanent magnet groups.

10. The linear motor vibration absorber according to claim 9, characterized in that: The push rod has a plurality of first mounting surfaces, the plurality of first mounting surfaces are arranged at intervals along the circumference of the push rod, and the plurality of permanent magnets are arranged on the plurality of first mounting surfaces; The cylinder has a plurality of second mounting surfaces, and a plurality of the motor primary coils are arranged on the second mounting surfaces; The first mounting surface is arranged in parallel with the second mounting surface.

11. The linear motor vibration absorber according to claim 10, characterized in that: The push rod comprises: A first rod portion, wherein the first rod portion is columnar and has a polygonal cross section, and at least a portion of a side surface of the first rod portion is formed as the first mounting surface; A second rod portion, wherein the second rod portion is connected to the first rod portion, and the second rod portion is suitable for being connected to a wheel.

12. The linear motor vibration absorber according to claim 11, characterized in that: The first rod portion is in the shape of an equilateral triangular prism, the second rod portion is in the shape of a cylinder, the first rod portion is coaxial with the second rod portion, and a radial dimension of the second rod portion is smaller than a radial dimension of the first rod portion.

13. The linear motor damper according to claim 1, characterized in that: The permanent magnet group includes a plurality of permanent magnets, and the plurality of permanent magnets are arranged at intervals along a direction from the vehicle body to the wheel.

14. A vehicle, characterized in that: It comprises a linear motor vibration absorber according to any one of claims 1-13.

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