JPH10338016A - Suspension device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically regulate height and inclination of a body without any influence on running performance due to increase in weight by detecting continuous inclination of the body over a predetermined time and changing a body height position from a tread face. SOLUTION: In a suspension device 10, a height position of a body 12, which is provided with four wheels 11, 11, 11, 11 touching the ground, is changed on the basis of detection of a continuous inclination of the body 12 over a predetermined time, so that the vehicle body 12 is held horizontally. In the suspension device 10, a shock inputted from a tread face to the vehicle body 12 is absorbed by means of a coil spring 14, and furthermore, vibration of the coil spring 14 is absorbed by means of a damper 15. If the vehicle body 12 is tilted continuously over a predetermined time, a detection means 13 detecting an inclination of the mounted vehicle body 12 detects the inclination of the vehicle body 12, and then, the height of the vehicle body 12 is returned by means of the damper 15 and the height of the vehicle body 12 can be kept constant substantially.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device, and more particularly to a suspension device used for an automobile or an aircraft.

[0002]

2. Description of the Related Art Generally, a wheel of an automobile, an aircraft or the like is provided with a suspension device for suspending the wheel. Such a suspension device includes a spring that absorbs a shock input from the ground to a vehicle body or a body according to road conditions, and a damper that appropriately reduces vibration of the spring.

[0003]

However, in a vehicle equipped with such a conventional suspension device, a heavy load is loaded in a trunk room, or a part of a vehicle compartment, for example, a passenger seat. Alternatively, when a luggage is loaded or an occupant gets on only the rear seat, all or only a part of the vehicle body sinks, and in some cases, the vehicle body may be tilted.

In order to prevent such a so-called sinking and leaning of a vehicle body, for example, some vehicles have
An oil tank that supplies oil to dampers arranged independently for each of the wheels is installed and the inclination of the vehicle body is detected,
The oil pump automatically supplies oil from the oil tank to the damper supporting the part where the vehicle body is sinking,
By increasing the amount of oil stored in the damper and changing the height position of the piston in the damper, the supporting position of the inclined body part is raised higher, and the height of a part of the body There has also been a suspension device having an automobile height adjustment mechanism that automatically holds the vehicle body at a height position and holds the vehicle body substantially horizontally.

However, in the suspension device having such a vehicle height adjusting mechanism, an oil tank for increasing and supplying oil to the damper must be mounted, and the oil tank and each damper must be connected to each other. Oil circuit must be installed in between,
As a result, the vehicle weight increases. When the vehicle weight increases in this way, the driving performance is affected, and there is a problem that rapid acceleration and effective deceleration cannot be performed, and also a problem that fuel efficiency decreases. Was.

Further, there is a problem that an oil pump or the like for supplying oil is required in addition to mounting the oil tank and the oil circuit, thereby increasing the manufacturing cost of the vehicle body. Therefore, the technical problem of the inventions according to claims 1 to 3 is that the increase in weight does not affect the running performance, the fuel efficiency does not decrease, and the manufacturing cost does not increase. An object of the present invention is to provide a suspension device capable of automatically adjusting the height and inclination.

The technical problem of the invention according to claim 4 is that, in addition to the technical problems according to claims 1 to 3, oil is filled as a fluid in a cylinder constituting a damper, and the impact is damped by hydraulic pressure. It is an object of the present invention to provide a suspension device configured to perform the above. According to the fifth aspect of the invention, in addition to the technical problems of the second to fourth aspects of the invention, by changing the stroke length of the piston disposed in the cylinder constituting the damper, To provide a suspension device that changes the height of the vehicle.

According to a sixth aspect of the present invention, in addition to the technical objects of the third to fifth aspects, a suspension device capable of quickly adjusting the vehicle height or maintaining a horizontal state is provided. Is to do. Another object of the present invention is to provide a four-wheel independent suspension apparatus in addition to the technical objects of the first to fifth aspects.

Further, in the invention according to claim 8, in addition to the technical problems according to claims 1 to 6, it is an object to provide a suspension device applicable to an aircraft.

[0010]

In order to solve such technical problems, according to the first aspect of the present invention, a continuous inclination of a body 12 having a plurality of wheels 11 that are in contact with the ground for a predetermined time is set. The posture of the body 12 is adjusted by detecting and changing the height position of the body 12 from the grounding surface.

Therefore, according to the first aspect of the present invention,
If the body 12 continuously tilts or sinks for a predetermined period of time for some reason, and the height of the whole or a part of the body 12 from the ground contact surface becomes low, the whole or a part of the body 12 is reduced. The height and attitude from the ground contact surface are automatically adjusted. As a result, in the invention of claim 1,
The height position of all or a part of the body 12 is automatically adjusted, and the body 12 automatically maintains the original height position or a substantially horizontal state.

According to the second aspect of the present invention, the body 1
Detecting means 13 for detecting the inclination of the body 2 and an elastic body 14 fixed to the body 12 and absorbing an input shock from the ground
And a damper 15 that suppresses the vibration of the elastic body 14 when an impact from the ground is input and that can change the height of the body 12 in accordance with the inclination of the body 12 detected by the detection means 13. It is characterized by having.

Therefore, according to the second aspect of the present invention,
The impact input from the grounding surface to the body 12 is applied to the elastic body 14.
And the vibration of the elastic body 14 is further absorbed by the damper 15. When the body 12 is continuously tilted for a predetermined time, the mounted detecting means 13 detects the tilt of the body 12, and the tilt of the body 12 is automatically returned by the damper 15. The body 12 is supported substantially horizontally or at the original height position.

As a result, according to the second aspect of the present invention, the weight is increased without affecting running performance.
Suspension devices 10 and 32 capable of automatically adjusting the height and horizontal state of body 12 without lowering fuel efficiency and without increasing manufacturing costs
Is provided. According to the third aspect of the invention, the damper 15 includes a cylinder 18 fixed to the body 12 and filled with a fluid, and a piston 19 slidably disposed in the cylinder 18. And a drive unit 20 that can change the stroke length of the piston 19 in the cylinder 18.

Therefore, according to the third aspect of the invention,
The impact from the ground surface absorbed by the elastic body 14 is absorbed and reduced when the piston 19 disposed in the cylinder 18 constituting the damper 15 compresses the filled fluid 31. Further, the piston 1 constituting the damper 15
Since the stroke length of the cylinder 9 in the cylinder 18 is changed, the length from the lower end of the piston 19 to the upper end of the cylinder 18 can be changed. As a result, the cylinder 18 is fixed. The height position of the body 12 can be changed.

As a result, according to the third aspect of the invention, the weight is increased without affecting running performance.
Suspension devices 10 and 32 capable of automatically adjusting the height of the body 12 and holding the body 12 substantially horizontal without lowering the fuel efficiency and without increasing the manufacturing cost are provided. . The invention according to claim 4 is characterized in that the fluid is oil 31 and has an oil tank 34 that supplies oil 31 to the damper 15.

Therefore, in the invention according to claim 4,
The oil 31 is contained in the cylinder 18 constituting the damper 15.
And a piston 19 disposed in the cylinder 18
Due to viscous resistance when the oil 31 compresses the oil 31,
Vibration due to the shock input to 4 is attenuated. As a result, according to the fourth aspect of the present invention, the suspension device 1 including the damper 15 whose shock is attenuated by the hydraulic pressure is provided.
0,32 is provided.

According to the fifth aspect of the present invention, the damper 15 is mounted on an automobile and used to suspend the wheels 11, and the rod 21 of the piston 19 is provided at a predetermined interval in the rod axial direction. In addition, an upper flange portion 22 and a lower flange portion 23 are provided, and a coil spring 14 is disposed between the flange portions 22 and 23.
The drive unit 20 is characterized in that the height position of the lower flange portion 23 in the body 12 can be changed.

According to the fifth aspect of the present invention, when a part of the body 12 is tilted continuously for a predetermined time due to a loaded load or unevenness of a ground contact surface, etc. When the sun sinks, the height position of the lower flange portion 23 provided on the piston 19 constituting the damper 15 by the drive unit 20 in the body 12 is changed.

As a result, according to the fifth aspect of the present invention, the impact from the ground contact surface is applied to the coil spring 14 disposed between the upper flange portion 22 and the lower flange portion 23 of the piston rod 21. The input coil spring 14 absorbs the vibration, and the vibration of the coil spring 14 at that time is further absorbed by the damper 15. Further, since the height position of the lower flange portion 23 of the piston 19 constituting the damper 15 is changed, the length of the piston 19 is changed as a result.

As a result, according to the fifth aspect of the present invention, for example, the weight
When the vehicle height of the piston 19 decreases, the drive unit 20 raises the height position of the lower flange portion 23 of the piston 19, so that the entire length of the piston 19 becomes longer. As a result, the piston 19 raises the cylinder 18 further upward, and the cylinder 1
The vehicle body 12 to which 8 is fixed rises.

Therefore, in the invention according to claim 5,
When the load is applied and the height of the vehicle decreases, the vehicle height is automatically adjusted to maintain a predetermined height position. According to the invention described in claim 6, the driving section includes a lower flange portion 23 formed by an electromagnet, and a base portion including an electromagnet disposed below the lower flange portion 23 at a predetermined interval. 26, the lower flange 23 and the base 2
6 and a power supply 27 capable of generating the same or different magnetic poles on the lower flange 23 and the base 26. In a normal state, the lower flange 23 and the base 2 are provided.
6, a magnetic pole different from that of the lower flange portion 23 is generated.
When the vehicle body 12 is adsorbed and in contact with the base and the height of the whole or a part of the vehicle body 12 is lowered, the same magnetic pole is generated in the lower side flange 23 and the base 26 by the power supply unit 27. The lower flange portion 23 and the base portion 26 are configured to be separated from each other.

Therefore, in the invention according to claim 6,
In the normal state, when the electric magnet is energized by the power supply unit 27, the same or different magnetic poles are generated in the lower flange portion 23 and the base portion 26. Therefore, in a normal state, different magnetic poles are generated between the lower flange portion 23 and the base portion 26, and the lower flange portion 23 is attracted to the base portion 26 and is in contact therewith.

On the other hand, if the height of the entire or a part of the vehicle body 12 is lowered for some reason, the same magnetic poles are generated in the lower flange portion 23 and the base portion 26 by the power supply portion 27. The flange portion 23 and the base portion 26 repel each other, and the lower flange portion 23 rises upward. As a result, the overall length of the piston 19 becomes longer. As a result, the cylinder 18 is pushed upward and the vehicle height rises, so that the original vehicle height can be maintained.

Therefore, in the invention according to claim 6,
In addition to the effects of the invention described in claims 3 to 5, the damper 1
Piston 19 arranged in a cylinder 18 constituting
By quickly changing the stroke length of the body 12
The suspension devices 10 and 32 that change the height of the suspension can be provided. In the invention according to claim 7,
The damper 15 and the elastic body 14 are provided for each wheel 11 of the automobile.
And each wheel 11 can be independently suspended.

Therefore, according to the seventh aspect of the present invention, the suspension 10 comprising the damper 15 and the elastic body 14 is provided.
Are provided separately for the respective wheels 11, so-called independent suspension. As a result, in the invention of claim 7, in addition to the effects of claims 1 to 5, 4
Wheel independent suspension systems 10, 32 are provided.

The invention according to claim 8 is characterized in that the invention is applied to an aircraft landing gear. As a result, in the invention according to claim 8, when the height of the fuselage from the ground lowers while the aircraft is gliding, the height of the fuselage 12 from the ground is automatically recovered. It is possible to glide while maintaining a constant height of the body 12.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A suspension device according to the present invention will be described below based on an embodiment shown in the accompanying drawings. As shown in FIG. 1, a suspension device 10 according to the present invention is applied to a suspension device for wheels of an automobile 25, and a suspension of a vehicle body 12 having four wheels 11, 11, 11, 11 that touch the ground for a predetermined time. Detects a typical inclination,
By changing the height position of the vehicle body 12 from the ground contact surface, the vehicle body 12 is configured to be held horizontally.

That is, the suspension device 10 according to the present embodiment has the detecting means 1 for detecting the inclination of the vehicle body 12.
3, a coil spring 14 as an elastic body that absorbs an input impact from the ground, and suppresses the vibration of the elastic body when an impact from the ground is input, and is detected by the detection means 13. And a damper 15 that can change the height of the body 12 according to the inclination of the vehicle body 12.

Therefore, in the suspension device 10 according to the present embodiment, the shock input to the vehicle body 12 from the ground contact surface is absorbed by the coil spring 14, and the vibration of the coil spring 14 is further absorbed by the damper 15. It is configured so that vibration can be attenuated. Also, the vehicle body 12
Is continuously tilted for a predetermined time, the mounted detecting means 13 detects the tilt of the vehicle body 12, and the height of the vehicle body 12 is returned by the damper 15,
The height of the vehicle body 12 is kept substantially constant.

In the present embodiment, the damper 1
Suspension 1 comprising coil spring 5 and coil spring 14
Numeral 6 is provided on four wheels 11, 11, 11, 11, respectively, and is a so-called four-wheel independent suspension.
The sensors 13, 13, 13, 13 for detecting the inclination of the vehicle body 12 in the front-back direction and the vehicle left-right direction
Are provided at the four corners, and when the inclination of the vehicle body 12 in the front-rear direction and the left-right direction is detected, or when the vehicle body 12 sinks greatly due to a load or the like, the inclination of the vehicle body 12 and the sinking of the vehicle body 12 are detected. It is configured to be able to detect.

These sensors 13, 13, 13, 13
Are respectively connected to the control unit 28, and the sensors 1
When the vehicle 3 detects the inclination of the vehicle body 12 or the sinking of the vehicle body, it is configured to transmit an electric signal to the control unit 28. The control unit 28 is provided substantially at one side of the central portion of the vehicle body 12 and, when an electric signal is input from the sensor 13, supplies power from a vehicle-mounted battery 27 to the drive unit 20 of the suspension 16. It is configured to receive.

On the other hand, each of the suspensions 16 is shown in FIG.
As shown in FIG.
Having. As shown in FIGS. 3 and 4, the damper 15 is fixed to a chassis 17 constituting the vehicle body 12 and is filled with an oil 31 filled therein.
8 and in this cylinder 18 the piston head 3
The piston 19 is provided so as to be slidable, and a drive unit 20 capable of changing a stroke length of the piston 19 in the cylinder 18 is provided.

The upper flange 2 is provided on the rod 21 of the piston 19 at a predetermined interval in the axial direction of the rod 21.
2 and a lower flange portion 23 are provided, and a coil spring 14 is disposed between the flange portions 22 and 23. Further, the driving unit 20 includes a cylinder 24
And a lower flange portion 23 slidably disposed in the cylinder 24 and formed by an electromagnet, and a base 26 comprising an electromagnet disposed at a predetermined distance below the lower flange portion 23. The base 26 and the lower flange 23 are provided with a battery 27 serving as a power supply unit.
Are electrically connected to each other through a wiring 29.

Therefore, when power is supplied from the battery 27, the lower flange portion 25 and the base portion 26 are energized to generate the same or different magnetic poles on the lower flange portion 23 and the base portion 26. ing. As a result, in the suspension device 10 according to the present embodiment, when the vehicle body 12 of the automobile is continuously tilted for a predetermined time due to a loaded load or large irregularities on the ground contact surface,
Alternatively, when there is a large sinking of the vehicle body 12, the height position of the lower flange portion 23 provided on the piston 19 constituting the damper 15 is changed by the drive unit 20.

As a result, for example, when the height of the automobile is reduced due to the load of the loaded luggage or the like, as shown in FIG. Is raised, the height position of the piston head 30 in the cylinder 14 is raised. As a result, the piston head 30 moves the oil 31 in the cylinder 14
As a result, the piston 19 raises the cylinder 24 fixed to the chassis 17 further upward, and the vehicle body 12 rises together with the chassis 17 to correct the inclination of the vehicle body 12 or reduce the vehicle height to a certain height position. It is configured to be held.

Hereinafter, the operation of the suspension device 10 according to the present embodiment will be described. In the suspension device 10 according to the present embodiment, normally, when the vehicle travels in a state in which the vehicle height is substantially the same as the vehicle height originally set for the vehicle type, as shown in FIG. Different magnetic poles are generated in the lower flange portion 23 and the base portion 26 constituting the driving portion 20 by the power supplied from the battery 27, and the lower flange portion 23 and the base portion 26 are in contact with each other.

The impact inputted from the ground to the wheels 11 is absorbed by the coil spring 14 constituting the suspension 16. When vibration is input to the coil spring 14, the vibration is transmitted to the piston head 30 via the rod 21 of the piston 19 to which the upper flange portion 22 and the lower flange portion 23 are fixed. The oil 31 filled in the compressor 18 is compressed. Accordingly, the vibration is attenuated by viscous resistance generated when the piston 19 compresses the oil 31, and the impact from the ground is absorbed in the vehicle body 12.

On the other hand, for example, when the luggage or the like loaded in the trunk room lowers the height of the vehicle body 12, for example, on the rear wheel side, when the entire vehicle body 12 sinks due to the weight of the occupant, When the body 12 is tilted to one side in the width direction, the sensors 13 disposed at the four corners of the vehicle body 12 detect the tilt, and the sensor 13 inputs a signal to the control unit 28, and when the signal from the sensor 13 is input, the control unit 28 supplies power from the battery 27 to the drive unit 20 of the suspension 16 which needs to raise the vehicle height. By changing the supply and changing the magnetic pole of either the base 26 or the lower flange 23,
And the lower side flange portion 23 are set to have the same magnetic pole.

When the base portion 26 and the lower flange portion 23 have the same magnetic pole, the base portion 26 and the lower flange portion 23 repel each other as shown in FIG. As a result, the piston 19 moves upward,
The lower flange 23 is separated from the base 20. Therefore, the piston head 30 of the piston 19 is
And compresses the oil 31 filled in the cylinder 18 from below.

At this time, the compression of the oil 31 exerts an upward lifting force on the cylinder 14, and the chassis 17 to which the cylinder 14 is fixed is also lifted upward. As a result, the vehicle body 1 fixed to the chassis 17
2 is also lifted upward, and the vehicle height at the portion of the suspension 16 rises. Therefore, when the entire vehicle body 12 sinks and it is desired to increase the vehicle height of the entire vehicle body 12, all the drive units 20 of the four suspensions 16 are operated to raise the piston 19. When it is desired to raise the vehicle height of only a part of the vehicle body 12, the drive unit 20 of the suspension 16 mounted on the wheel 11 to be raised is required.
To raise the piston 19 of the suspension 16 to raise the vehicle height.

Accordingly, the vehicle height of the part where the vehicle height has been lowered automatically rises, or the body 12 which has sunk is raised, and the vehicle height becomes substantially the same as a whole, or The vehicle height returns to the same vehicle height as the vehicle height set for the vehicle type, and a good running feeling can be provided to the occupant. As a result, in the suspension device 10 according to the present embodiment, a substantially constant vehicle height can always be automatically maintained regardless of the weight of the loaded luggage, the number of occupants, or the condition of the road surface. Thus, the vehicle body 12 can be held substantially horizontally.

FIGS. 5 and 6 show a suspension apparatus 10 according to a second embodiment of the present invention. In the suspension device 32 according to the present embodiment, in addition to the suspension device 10 according to the previous embodiment, when the vehicle height is increased, the oil 31 is further supplied to the cylinders 18 provided in the respective suspensions 33. It is configured to be.

That is, as shown in FIG. 5, in the suspension device 32 according to the present embodiment, an oil tank 34 is mounted substantially at the center of the vehicle body. An oil circuit 36 for supplying oil is provided between the oil circuit 35 and the oil circuit 35. There is also an oil tank 3 in the engine room.
4 is provided with an oil pump 37 for supplying oil to the cylinder 35 of each suspension 33. The oil circuit 36 and the cylinder 35 are joined by an oil hose 36.

Therefore, in the suspension device 32 according to the present embodiment, in addition to the operation of the suspension device 10 according to the previous embodiment, it is necessary to increase the height of all or a part of the body 12. In this case, the drive unit 20 of the corresponding suspension 33 is operated to operate the piston 1
9, and a predetermined amount of oil is supplied to the cylinder 35 that constitutes the suspension 33.

That is, when the sensor 13 detects the inclination or sinking of the vehicle body 12, the control unit 28 to which the signal of the sensor 13 has been input is supplied with power from the battery 27 to the base 26 and the lower flange. By changing the magnetic pole with the part 23 and operating the oil pump 37, a predetermined amount of oil is further supplied from the oil tank 34 to the cylinder 35 of the suspension 32 via the oil circuit 36 and the oil hose 36.

By the supply of the oil, the oil pressure in the cylinder 35 is increased, and when the piston 31 raises the piston 19 to compress the oil 31, the cylinder 35 can be pushed up more quickly and with a large force. . As a result, in the suspension device 32 according to the present embodiment, the vehicle body 12 can be raised more quickly and with a stronger force than in the case of the suspension device 10 in the previous embodiment.

In the above embodiment, the case where the suspension device according to the present invention is applied to the adjustment of the height of an automobile has been described as an example. Any device that travels may be used. For example, the present invention can be applied to a suspension device for a train, an aircraft, and the like. Further, the specific configuration of the suspension device is not limited to the above embodiments.

[0049]

According to the first to third aspects of the present invention,
Provided is a suspension device capable of automatically adjusting the height and inclination of a body without increasing running weight and without lowering fuel efficiency without affecting running performance due to an increase in weight. can do.

In the invention according to claim 4, claim 1 is
In addition to the effects described in the third to third aspects, it is possible to provide a suspension device in which a cylinder constituting a damper is filled with oil as a fluid and a shock is attenuated by hydraulic pressure. According to the fifth aspect of the present invention, in addition to the effects of the second to fourth aspects of the present invention, the height of the body is increased by changing the stroke length of the piston disposed in the cylinder constituting the damper. It is possible to provide a suspension device that changes the height.

According to a sixth aspect of the present invention, in addition to the effects of the third to fifth aspects, there is provided a suspension device capable of quickly adjusting a vehicle height or maintaining a horizontal state. Can be. In addition, according to the invention described in claim 7, in addition to the effects described in claims 1 to 5, a suspension device of four-wheel independent suspension can be provided.

According to the eighth aspect of the invention, in addition to the effects of the first to sixth aspects, it is possible to provide a suspension device applicable to an aircraft.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment in which a suspension device according to the present invention is applied as a four-wheel independent suspension of an automobile.

FIG. 2 is an exploded perspective view showing a structure of a suspension constituting the suspension device according to the present invention.

FIG. 3 is a sectional view showing a structure of a suspension constituting the suspension device according to the present invention.

FIG. 4 is a cross-sectional view showing a structure of a suspension constituting the suspension device according to the present invention.

FIG. 5 is a diagram showing a state in which the suspension device according to the present invention is applied to an automobile as a four-wheel independent suspension of the automobile, and is an exploded perspective view showing a second embodiment.

FIG. 6 is an exploded perspective view showing a structure of a suspension constituting the suspension device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Suspension device 11 Wheel 12 Body (vehicle body) 13 Detecting means (sensor) 14 Coil spring (elastic body) 15 Damper 16 Suspension 17 Chassis 18 Cylinder 19 Piston 20 Drive unit 21 Rod 22 Upper flange 23 Lower flange 24 Cylinder Reference Signs List 25 oil supply path 26 base 27 power supply unit (battery) 28 control unit 29 wiring 30 piston head 31 oil 32 suspension device 33 suspension 34 oil tank 35 cylinder 36 oil hose 37 oil pump

Claims (8)

[Claims] The present invention is characterized in that a posture of a body having a plurality of wheels that contact the ground is detected by detecting a continuous inclination of the body over a predetermined period of time and changing a height position of the body from a ground contact surface. Suspension device. 2. A detecting means for detecting a tilt of the body, an elastic body fixed to the body and absorbing an input shock from the ground, and a vibration of the elastic body when a shock from the ground is input. 2. The suspension device according to claim 1, further comprising a damper that suppresses and changes the height of the body according to the inclination of the body detected by the detection unit. 3. A damper fixed to a body and filled with a fluid, a piston slidably disposed in the cylinder, and a stroke length of the piston in the cylinder is changed. 3. The suspension device according to claim 2, further comprising a driving unit that can perform the driving. 4. The suspension device according to claim 2, wherein the fluid is oil, and the fluid has an oil tank that supplies the oil to the damper. 5. The damper is mounted on an automobile and used to suspend wheels, and the piston rod is provided with an upper flange portion and a lower flange portion at predetermined intervals in a rod axial direction. A coil spring is disposed between the flanges, and the driving portion is formed so as to be able to change a height position of the lower flange portion in the body.
5. The suspension device according to 3 or 4. 6. The drive section includes a lower flange portion formed by an electromagnet, a base portion including an electromagnet disposed below the lower flange portion at a predetermined interval, a lower flange portion and a base portion. And a power supply unit capable of generating the same or different magnetic poles on the lower flange portion and the base portion. In a normal state, different magnetic poles are generated on the lower flange portion and the base portion. The part is attracted to the base and is in contact with the base, and when the height of all or part of the vehicle body is lowered, the same magnetic pole is generated on the lower flange part and the base by the power supply part, The suspension device according to claim 3, wherein the flange portion and the base portion are configured to be separated from each other. 7. The vehicle according to claim 2, wherein the damper and the elastic body are respectively provided on each wheel of the automobile, and each wheel is independently suspended. 6. The suspension device according to 5. 8. The suspension device according to claim 1, wherein the suspension device is applied to an aircraft landing gear.