JP3464029B2 - Vehicle stabilizer device - Google Patents

Description

Description [0001] The present invention relates to a torsion bar.
Related to stabilizer devices for vehicles formed
is there. 2. Description of the Related Art Conventionally, a vehicle stabilizer device has been
Pivot the center of the
The end is pivotally connected to the left and right wheels of the suspension, respectively.
It had been. Therefore, make sure that the left and right wheels are in phase.
When moving up and down, it has no function as a spring,
If the body leans left or right and the left and right wheels move upside down
When the torsion bar twists,
A spring force is generated to suppress it. [0003] However, as described above,
With the conventional stabilizer device configured as described above,
When driving, the left and right wheels are out of phase and relatively fast
When moving, a large impact is applied to the body and the ride comfort
There was a problem that became worse. In addition, either left or right
Wheels may get over road bumps (this phenomenon
Over a single wheel) or fall into a groove on the road
This phenomenon is referred to as single wheel groove below)
Even if they do not move in phase, the
If the speed at entry is high, the impact is applied to the vehicle body as described above.
Would. The present invention has been made to solve such a problem.
When the left and right wheels do not move in phase,
The reaction force of the torsion bar will impact the car body
The purpose is to prevent. [0005] According to the present invention, a vehicle star according to the present invention is provided.
The bezel device is suspended on both ends of the torsion bar and on the left and right
A hydraulic cylinder is interposed at the connection with the device,
Oil chamber on the compression side when contracted
With a free piston energized by high pressure gas
Check valve and reservoir to reserve tank where oil chamber is compressed
The check valve is connected through a leaf valve and the check valve is
Connect the oil so that it flows only to the
Valve to the valve body with the main oil passage formed.
A body for movably inserting the body along its axial direction and a spring
The valve body is urged to the closed side by
The end face of the hydraulic cylinder is
This is connected to the oil chamber. When the hydraulic cylinder is contracted, the cylinder body is
Movement speed of the throttled piston with respect to
Is the pressure of the oil chamber on the compression side of this hydraulic cylinder.
Is the main oil passage of the relief valve and the oil passage with throttle
Is added to the valve body. At this time, close the valve
Since the same pressure is applied to the end face on the opening side and the end face on the opening side, the valve
The body is kept closed by the spring. That is, the hydraulic system
Oil flows out of the oil chamber on the compression side of the cylinder
And the throttled piston and piston rod
It is fixed to the cylinder body. For this reason, hydraulic
Since the cylinder becomes a rod whose length is virtually invariable, oil
The pressing force is transmitted from one end of the pressure cylinder to the other end. When the hydraulic cylinder shrinks and the cylinder
When the moving speed of the throttled piston with respect to the main body is as described above
The oil pressure in the oil chamber is steeply high.
The main oil passage of the relief valve and the oil with throttle
Added to the passage. The oil pressure rises rapidly like this
And the throttle in the oil passage with the throttle hinders the opening of the valve.
Because it is difficult for hydraulic pressure to be applied to the end face in the
It opens due to an increase in oil pressure in the oil passage. Sand
In this case, the oil pressure in the oil chamber is set via a relief valve.
To the reserve tank,
The throttled piston and piston rod of the Linda
The cylinder moves to the compression side with respect to the main body. others
Therefore, the total length of the hydraulic cylinder is shortened. On the other hand, when the hydraulic cylinder extends,
Oil flows from the saab tank through the check valve.
The throttled piston and piston rod move
Move to the extension side relative to the cylinder body regardless of the speed
You. Then, it is further extended to the hydraulic cylinder
When a force is applied that extends
The total length of the rod is constant, and the pulling force is
Da from one end to the other. For this reason, the stabilizer device according to the present invention is provided.
According to the position, when the left and right wheels move in phase, the left and right oil
Since pressure cylinders expand and contract in the same direction,
No twisting occurs in the member. Also, how the left and right wheels work
When the directions are not in phase and the wheels are
When the vehicle speed is relatively slow (for example,
During rolling), the extension side of the left and right hydraulic cylinders
Hydraulic cylinder becomes fully extended and torsion
The hydraulic cylinder that pulls the bar and retracts is substantially longer
Like an immutable rod, pushing the torsion bar
You. At this time, the torsion bar twists,
The inclination is suppressed by the spring force of the torsion bar. When the operating directions of the left and right wheels are not in phase
When the vertical speed of the wheel with respect to the body is relatively fast
(For example, when riding over a single wheel or entering a single-wheel groove)
The hydraulic cylinder on the extension side of the hydraulic cylinder
The hydraulic cylinder on the contraction side
So that the torsion bar is
It is displaced in the direction and twisting does not occur. For example,
Oil on the left and right sides of the wheel that got over the protrusion when riding over one wheel
When a force is applied to the pressure cylinder to extend it
The hydraulic cylinder is fully extended and the torsion
One end of the member is pulled. At this time,
The hydraulic cylinder connected to the other end of the
The torsion bar
Has no twist. Also, when riding over one wheel,
To the hydraulic cylinder on the same side as the wheel
The hydraulic cylinder shrinks when the
The force is not applied to the torsion bar. In this case
Even the torsion bar is not twisted. FIG. 1 to FIG. 6 show an embodiment of the present invention.
Therefore, it will be described in detail. FIG. 1 shows a stabilizer according to the present invention.
And perspective views showing a schematic configuration of a vehicle equipped with a user device.
2 is a front wheel suspension device equipped with a stabilizer device according to the present invention.
FIG. 3 is a perspective view showing a mounted state, and FIG.
A perspective view showing a state in which the stabilizer device according to the present invention is mounted.
FIGS. 4 and 5 show the main parts of the stabilizer device according to the present invention.
FIG. 5 is a schematic configuration diagram, FIG. 5 is a sectional view showing the configuration of a relief valve,
FIG. 6 illustrates the operation of the stabilizer device according to the present invention.
FIG. In these figures, reference numeral 1 denotes an automobile,
Left and right front wheels 2 and 3 and rear wheels 4 and 5 of car 1 are front wheel suspension
A suspension device 6 and a rear wheel suspension device 7 respectively suspend the vehicle body 8.
It is suspended. Front wheel suspension device 6 and rear wheel suspension device
7 is a well-known MacPherson strut type
A suspension member 9 fixed to the vehicle body 8;
The suspension member 9 is supported to be able to swing up and down.
Left and right transverse links 10, 10 and
A ball joint (not shown) is attached to the swing end of the
Strut assembly 11 connected via points
And the hub 12 and the like. Reference numeral 13 denotes the strut assembly 11.
Coil spring, 14 is strut assembly 11
Strut mounting for securing the top of the vehicle to the body
Ginsulator, 15 is a tension rod, 16 is a strap
It is a tearing device. Also, the direction indicated by arrow F in FIG.
Indicates the front of the vehicle body. Reference numeral 21 denotes a vehicle stabilizer according to the present invention.
Device. In this embodiment, the front wheel suspension device 6 and the rear wheel suspension device
This stabilizer device 21 was attached to both the device 7 and
Here is an example. The stabilizer device 21 moves rearward of the vehicle body.
It is formed in a substantially U-shape in plan view and opens in the left-right direction.
Is rotatably supported on the vehicle body 8 via the support member 22.
The torsion bar 23 held and this torsion bar 2
Arm portions 23 located on the right and left sides of the arm 3 and extending substantially rearward
a, 23b and the strut assembly 11 unsprung
And a hydraulic cylinder 24 interposed between the
From the relief valve device 25 connected to the pressure cylinder 24
Is formed. The hydraulic cylinder 24 is, as shown in FIG.
Piston 2 with throttle attached to piston rod 26
7 can be moved to the cylinder body 28 along its axial direction.
It is formed by being inserted into. And this hydraulic syringe
The lower end of the cylinder body 28 has the torsion bar
-23, and the upper end of the piston rod 26 is
Pivotally attached to the unsprung portion of the strut assembly 11
ing. The inside of the cylinder body 28 is oiled.
Filled and defined by throttled piston 27
The upper oil chamber 29 and the lower oil chamber 30
Communicating consisting of small holes drilled at 27
They are communicated via a road 27a. In this embodiment,
In the lower oil chamber 30, a piston 27 and a piston
Coil spring for urging the pad 26 in the cylinder extension direction
31 are loaded. This compression coil spring 31 is unnecessary
However, as shown in this embodiment,
When the piston 27 rises in FIG.
The operation is performed quickly, and the response delay is reduced. The relief valve device 25 is shown in FIG.
And the reserve tank 32 and the reserve tank 32
The lower oil chamber 30 of the hydraulic cylinder 24 (a hydraulic cylinder)
Between the oil chamber on the compression side when the damper 24 shrinks)
The check valve 33 and the relief valve 34
Has been established. The reserve tank 32 includes a cylinder unit
32a, the free piston 32b is inserted along its axial direction.
By being movably fitted, the inside of the cylinder portion 32a is
In the figure and the oil chamber 32c located on the left
And a high-pressure gas chamber 32d to be placed.
You. The oil chamber 32c is filled with oil and the high pressure gas chamber
32d is filled with a high-pressure gas. And oil
A check valve 33 and a relief valve 34 communicate with the chamber 32c.
You. The relief valve device 25 shown in FIGS.
Is a storage tank 32, a check valve 33 and a
And a relief valve 34. Ma
In this embodiment, the relief valve device 25 is
Supported and fixed to the holder 24 via a bracket (not shown).
I have. In addition, is the viewpoint of reducing the unsprung weight of the suspension system?
Fix the relief valve device 25 to the vehicle body 8
Can also. The check valve 33 is connected to the reserve tank 32
Is connected so that oil flows only to the hydraulic cylinder 24
ing. When the check valve 33 is connected in this manner, the hydraulic
The lower oil chamber 30 of the cylinder 24 always has the reserve tank 3
2 through the check valve 33, hydraulic pressure is applied.
In the no-load state, oil flows from the check valve 33 side.
And the piston 27 is pushed, and the piston 27 is fully extended. What
In this embodiment, in addition to the hydraulic pressure, the compression coil spring 31
Spring force will also be applied. The relief valve 34 is shown in FIGS.
Connected to the hydraulic cylinder 24 via the communication pipe 35
Valve body 36 and a throttle member 37
You. The valve body 36 is connected to an oil passage in the communication pipe 35.
The connected main oil passage 38 is opened and closed by a valve body 39.
The structure is This valve body 39 has a substantially cylindrical shape with a bottom.
And a circular hole 4 formed in the valve body 36.
0 is movably fitted in its axial direction. Soshi
Then, the inner bottom surface of the cylindrical portion 39a of the valve body 39 (hereinafter referred to as
Is referred to as an opening-side end face 39b) and the valve body 36.
And a compression coil for urging the valve body 39 to the closing side.
A spring 41 is mounted. Also, the bottom portion 39 of the valve body 39
The portion facing the main oil passage 38 in FIG.
Pressure receiving surface 39 formed of a plane orthogonal to the direction of movement of valve body 39
d is formed. Further, the inside of the circular hole 40 is a valve.
The part opposite to the body 39 is connected via the auxiliary communication passage 40a.
From the valve body 39 of the main oil passage 38 to the reserve tank 32
Communicated to the side. That is, the valve body 39 is provided in the main oil passage.
38 (the hydraulic pressure applied to the pressure receiving surface 39d)
When the spring force of the compression coil spring 41 becomes larger than that shown in FIG.
Move downward and open as shown by the two-dot chain line
If it is smaller, it will close as shown in the figure.
You. When the valve body 39 opens, the oil in the circular hole 40
It flows out to the auxiliary communication passage 40a. The throttle member 37 has an oil amount in the case 42.
The adjustment spool 43 is inserted so as to be movable in the axial direction.
It is formed. The case 42 has an oil amount adjusting spool 43.
Are inserted into the spool chamber 42a through the ports 42b and 42c.
It is formed so as to open outside the case. The port
The port 42b extends from the outer surface of the case 42 to the spool chamber 42a.
It is formed so that the inside diameter gradually narrows as you go
ing. The port 42b is connected to the inside of the communication pipe 35.
Port 42c is connected to the auxiliary communication pipe 44.
Through the circular hole 40 of the valve body 36
You. Opening of the auxiliary communication pipe 44 on the valve body 36 side
Is located at a position facing the inner bottom surface 38b of the valve body 39.
Have been killed. The oil amount adjusting spool 43 of the throttle member 37
Is formed in a bottomed cylindrical shape and is located on the upper side in FIG.
The bottom is in contact with the aperture adjustment screw 45, and
The compression coil spring 46 elastically mounted between the
It is urged upward in the figure. It should be noted that the aperture amount adjustment
The adjusting screw 45 is screwed to the case 42. Also, the amount of oil
The distal end of the cylindrical portion of the adjustment spool 43 moves toward the distal end.
Therefore, the inner diameter is gradually increased.
You. The position of the oil amount adjustment spool 43 is
Adjust the screw-in amount of the amount adjusting screw 45 to adjust the
The opening on the spool chamber 42a side is narrowed by the cylindrical portion.
It is set as follows. That is, the port 42b is viewed from outside the case.
The tip of the oil amount adjustment spool 43 is
The thin blade orifice 4
7 are configured. Therefore, the opening direction of the valve body 39
The side end surface 39b includes the auxiliary communication pipe 44, the throttle member 37,
The hydraulic system is connected via an oil passage with a throttle formed of a communication pipe 35.
It will communicate with the lower oil chamber 30 of the cylinder 24.
You. Next, the stabilizer configured as described above.
The operation of the iser device 21 will be described with reference to FIGS.
I will tell. (1) First, the vehicle 1 turns and the vehicle body 8
Will be described. For example, in FIG.
As shown in (a), the left side of the vehicle body 8 sinks and the right side rises
When rolling in such a way that
The ends 24 of the strut assembly 11 are unsprung.
Side part and the left arm part 23a of the torsion bar 23
Therefore, it is pulled and held in a fully extended state. Hydraulic switch
When the Linda 24 is extended,
Equivalent volume of oil flows from reserve tank 32 to check valve
It flows into the lower oil chamber 30 via the resistance 33 without resistance. At this time, the lower oil chamber 29 is
Oil flows through the throttle chamber (communication passage 27a)
And a resistance is generated when the piston 27 moves.
Therefore, it is possible to suppress a sudden change in the posture of the body 8.
You. Also, by providing a throttle in this way, the piston 27 can be moved.
The configuration that gives resistance to the
When the pressure 27 descends, the hydraulic pressure
Preventing transmission to the relief valve 34 faster than necessary
it can. The communication passage 27a is provided as shown in this embodiment.
It is not necessary to form the throttle so that the passage resistance
May be smaller. Also, adjust the aperture
In providing in the stone 27, it was shown in this embodiment.
In addition to the small diameter hole, the check valve
Can also be used. If this is the case,
When the stone 27 rises and falls in the figure
The aperture can be changed with the torsion bar 23
In order to control the inclination of the body 8 using the spring force,
The degree of freedom increases. On the other hand, the hydraulic cylinder 24 on the right side of the vehicle body
The right arm 23b of the
The damper body 28 is gradually urged upward to shrink.
Is added relatively slowly. When the hydraulic cylinder 24 is contracted,
The check valve 33 communicated with the lower oil chamber 30 and the communication pipe 3
5, the valve body 36 of the relief valve 34, the throttle section
Oil pressure is applied to the member 37 and the like. Check valve 33 is oil for flow
The check valve 3
The hydraulic pressure applied to the reservoir 3 is supplied from the check valve 33 to the reserve tank 3.
It does not reach the two sides. Therefore, the oil in the lower oil chamber 30
The pressure is supplied through the communication pipe 35 to the main oil passage of the valve body 36.
To be transmitted to the path 38 and the throttle member 37 almost equally.
Become. When the oil pressure in the main oil passage 38 increases, the valve element
The hydraulic pressure acts on the pressure receiving surface 39d of the valve 39, and the valve body 39 is moved to the position shown in FIG.
And push it down. On the other hand, it is connected to the aperture member 37.
When hydraulic pressure is applied from the pipe 35, the hydraulic pressure
Passes through orifice 47 without resistance because it is relatively gentle
And the spool chamber 42a, the port 42c and the auxiliary communication pipe
44 into the circular hole 40 of the valve body 36
It is. At this time, the valve body 39 of the relief valve 34
Is the same hydraulic pressure as the pressure receiving surface 39d and the opening-side end surface 39b.
Is equivalent to a state in which no hydraulic pressure is applied due to
Closed by the spring force of the compression coil spring 41
Kept in state. As a result, the hydraulic cylinder 24 on the right side of the vehicle body
The oil stops flowing out of the lower oil chamber 30 and is fixed.
Length 27 is held in the initial position, so that the length is substantially unchanged.
Rod. For this reason, the vehicle body 8 is
As shown in (a), when leaning to the left,
Left side of the torsion bar 23 by the hydraulic cylinder 24
The arm 23a is pulled upward and the vehicle
Torsion bar 23 by hydraulic cylinder 24 on right side of body
The right arm 23b is pushed downward.
The torsion of the vehicle bar 8 is suppressed due to the twisting of the
Will be. When the vehicle body 8 leans to the right,
The torsion bar 23 is twisted in the opposite direction to the above case
Will be. (2) One of the left and right wheels is on a road surface
If you get over one projection and get over one wheel,
Works like For example, as shown in FIG.
As shown, the wheels 2 and 4 on the left side of the vehicle
When moving up and down, the vertical movement speed at this time is compared
When the target is too slow, it operates as shown in (b) of FIG.
If the speed of movement is relatively high,
Works like that. That is, the vertical movement is performed gently.
(B), the hydraulic series on the left side of the vehicle
Is the unsprung portion of the strut assembly 11
Is gradually pulled upward by torsion
Similarly, the left arm 23a of the bar 23 is gradually pulled upward.
It is stretched. At this time, the right side
Since the arm 23b is also formed integrally, the right arm
The part 23b moves the hydraulic cylinder 24 on the right side of the vehicle body upward.
Become energized gradually. Thus, the hydraulic pressure on the right side of the vehicle
When a force is applied to the cylinder 24 to gradually shrink it
In this case, as described in the description of rolling,
The right hydraulic cylinder 24 is a rod of virtually invariable length.
Therefore, the right arm portion 23b of the torsion bar 23 is
Unsprung portion of strut assembly 11 on right side of vehicle body
To be rigidly connected to each other through a hydraulic cylinder 24.
And is held at the initial position. That is, when the vehicle goes over one wheel, the wheel
If the speed of getting over is relatively slow,
The member 23 will be twisted. The speed when the wheel gets over the protrusion is compared.
If it is too fast, the left arm 2 of the torsion bar 23
3a is quickly pulled upward, and the right
Also quickly raises the hydraulic cylinder 24 on the right side of the vehicle body.
Become biased towards. Thus the hydraulic cylinder
When the power to shrink it is rapidly added to 24,
The hydraulic pressure escapes to the reserve tank 32 through the relief valve 34,
The cylinder body 28 is a piston 27 or a piston rod 26
Rise against. This operation is described in more detail below.
Will be described. When the hydraulic cylinder 24 on the right side of the vehicle body is contracted,
When the oil pressure in the lower oil chamber 30 rises, this oil pressure
As described above, the main body of the valve body 36 is
It is almost equally applied to the oil passage 38 and the throttle member 37.
And let's shrink the hydraulic cylinder 24 as in this case
Force is applied rapidly and the oil pressure rises rapidly
In some cases, the hydraulic pressure applied to the throttle member 37
Sus 47 is in the way and it is difficult to transmit to the downstream side
Become. That is, at this time, the hydraulic pressure
The transmission to the main oil passage 38 does not proceed to the directional side end surface 39b.
Can be obtained. For this reason, this oil pressure
The valve body 39 opens when the spring force of the spring 41 is larger than the spring force.
become. The hydraulic pressure required to open the valve body 39 is
By changing the screw-in amount of the screw 45
Can be adjusted. That is, the aperture adjustment screw 4
By loosening 5 and reducing the amount of throttle at the orifice 47,
The hydraulic pressure applied to the opening-side end face 39 of the valve body 39 increases.
As a result, the valve body 39 becomes difficult to open. To make it easier to open,
do it. When the valve body 39 is opened, the oil in the communication pipe 35
The oil in the reserve tank 32 through the main oil passage 38
Flows into the chamber 32c, and as a result, the hydraulic cylinder 24
Volume corresponding to piston rod insertion from oil chamber 30
Oil flows out to the communication pipe 35. And the cylinder book
Body 28 is above piston 27 or piston rod 26
Will rise. For this reason, when riding over one wheel, the left wheel
When 2, 4 rises rapidly with respect to the body 8,
The hydraulic cylinder 24 located on the right side will shrink
Then, the left arm portion 23a of the torsion bar 23 moves upward.
Even if pulled, the right arm part 23b is the same as it.
, The torsion bar 23 is twisted.
Disappears. That is, at this time, the torsion bar 23
No impact is applied to the vehicle body 8 due to the reaction force.
In addition, when the wheel goes down with respect to the vehicle body 8 after passing over the protrusion,
At this time, the contracted hydraulic cylinder 24 is
Oil flows into the oil chamber 30 from the check valve 33 without resistance.
Then it will extend to the initial state. (3) The left and right wheels are as shown in FIG.
As shown, if you go over a bump on the road at the same time,
The right hydraulic cylinders 24, 24 are both fully extended.
And the torsion bar 23 includes left and right arm portions 23a, 23
b are both pulled upwards. Therefore, at this time
Does not cause torsion in the torsion bar 23. (4) Either of the left and right wheels enters the concave part of the road surface
When a single wheel groove is caused, the following operation is performed.
For example, as shown in FIG.
When the wheels 3 and 5 move up and down with respect to the
If the vertical movement speed at the time of is relatively slow,
When operating as shown in (b) and the vertical movement speed is relatively fast
Operates as shown in (c) of FIG. That is, the vertical movement is performed gently.
In this case, as shown in (b),
Because the force is applied to da24 to gradually shrink it,
Hydraulic cylinder 24 is substantially a rod of invariable length.
Push the right arm 23b of the torsion bar 23 downward.
Lower it. On the other hand, the left arm 2 of the torsion bar 23
3a urges the left hydraulic cylinder 24 downward. this
At this time, the left hydraulic cylinder 24 is fully extended
Since the left arm portion 23a is hardly displaced,
The bar 23 is twisted. When the vertical movement is performed quickly, (c)
Shrink it to the right hydraulic cylinder 24 as shown
Force is applied rapidly and the relief valve 3
Hydraulic pressure from the lower oil chamber 30 through the reserve tank 4
32 to the cylinder body 28 and the piston 27 or
The piston rod 26 descends. Because of this, torsion
The bar 23 does not apply a force to push the right arm 23b downward.
No twisting. (5) One of the left and right wheels gets over one wheel,
If the other side enters a single-wheel groove, it operates as follows.
You. For example, as shown in FIG.
Wheels 2 and 4 get over one wheel, right wheels 3 and 5
When each wheel goes up and down with respect to the car body 8
If the vertical movement is relatively slow, (b) in FIG.
When the vertical movement speed is relatively fast,
The operation is performed as shown in FIG. That is, when the vertical movement is gradual
As shown in (b), the hydraulic cylinder on the left side of the vehicle
24 is fully extended and is on the left side of the torsion bar 23
The arm 23a is pulled upward. Along with this
The hydraulic cylinder 24 on the right side of the body
The force adds to a virtually invariable rod,
The right arm 23b of the component bar 23 is a hydraulic cylinder 24
Is pushed down. Because of this, torsion
The bar 23 will be twisted. When the vertical movement is performed quickly, (c)
Shrink it to the right hydraulic cylinder 24 as shown
Force will be applied rapidly,
The piston 27 and the cylinder body 28
The piston rod 26 descends. At this time, torsion
In the bar 23, the left arm portion 23a is pulled upward.
Therefore, the right arm 23b also raises the hydraulic cylinder 24 upward.
Will be energized. That is, the cylinder body 28 also
The piston 27 is pushed upward, and the piston 27
Will be located at the bottom. For this reason, the left and right
Since the rubber parts 23a and 23b are displaced in the same direction (upward),
The torsion bar 23 is no longer twisted. Therefore, the stabilizer according to the present invention
According to the device, when the left and right wheels move in phase,
The left and right wheels are not twisted, and the operating directions of the left and right wheels are in phase.
When the vertical speed of the wheel with respect to the body is not
When relatively slow, the torsion bar 23 twists,
The inclination of the body 8 is suppressed by the spring force of the torsion bar 23.
It is. Also, when the operating directions of the left and right wheels are not in phase
If the vertical speed of the wheels with respect to the body 8 is relatively high
Torsion bar 23, left and right arm portions 23a,
23b is displaced in the same direction and no twisting occurs
Become. For this reason, the wheels rapidly move up and down with respect to the vehicle body.
When the torsion bar 23 reacts,
Can not be. That is, the reaction force of the torsion bar 23
Impact on the vehicle body 8 due to
You. In the above embodiment, the hydraulic cylinder 24
Connect the cylinder body 28 to the torsion bar 23,
FIG. 7 shows an example in which the ton rod 26 is connected to the wheel side.
The connection of the hydraulic cylinder 24 is turned upside down as shown in
Can also be. FIG. 7 shows the mounting direction of the hydraulic cylinder changed.
FIG. 6 is a view showing another embodiment, in which FIG.
For the same or equivalent parts as described, the same
Reference numerals are used, and detailed description is omitted. The stabilizer shown in FIG.
The riser device includes a cylinder body 28 of the hydraulic cylinder 24.
Is connected to the vehicle body, and the piston rod 26 is
It is connected to a bar 23. Figure (a) is over one wheel
FIG. 4B shows a state in which both left and right wheels ride on a protrusion on the road surface.
FIG. 3 (c) shows a state in which a single-wheel groove is inserted.
FIG. 4D shows a state in which one of the wheels is over one wheel.
And the other wheel is in a single-wheel groove
Show. Also, in FIGS. 7A to 7D, FIG.
(B) The vertical movement of the wheel is relatively slow
(C) The figure above the wheel
This shows a state where the downward movement is performed relatively quickly. As shown in FIG. 7, connection of the hydraulic cylinder 24
Even if the direction is set, the left and right wheels do not move in phase and
When the wheel moves up and down quickly, the torsion bar 23 is twisted.
Therefore, the same effect as the above embodiment can be obtained. As described above, according to the vehicle of the present invention,
The stabilizer device is located at both ends of the torsion bar and the left and right
A hydraulic cylinder is interposed at the connection with the suspension,
Oil on the compression side when contracted in the cylinder
Chamber by a free piston energized by high pressure gas.
The check valve and the check valve
The check valve is hydraulically connected through a relief valve.
Connect so that oil flows only to the cylinder side, and
Leaf valve in valve body with main oil passage formed
The valve is inserted so as to be movable along its axial direction.
The valve is biased to the closing side to form
Hydraulic cylinder through the oil passage with throttle
Of the left and right wheels
The vertical speed of the wheel relative to the body when not in phase
Is relatively fast, the torsion bar does not twist
It becomes. For this reason, when riding over one wheel or entering a groove on one wheel
When the wheels move quickly up and down with respect to the body
The reaction force of the engine bar is not applied to the vehicle body. That is,
Impact is applied to the vehicle body due to the reaction force of the torsion bar
Can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a schematic configuration of a vehicle equipped with a stabilizer device according to the present invention. FIG. 2 is a perspective view showing a state where the stabilizer device according to the present invention is mounted on the front wheel suspension device. FIG. 3 is a perspective view showing a state in which a stabilizer device according to the present invention is mounted on a rear wheel suspension device. FIG. 4 is a schematic configuration diagram showing a main part of a stabilizer device according to the present invention. FIG. 5 is a cross-sectional view illustrating a configuration of a relief valve. FIG. 6 is a diagram for explaining the operation of the stabilizer device according to the present invention. FIG. 7 is a view showing another embodiment in which the mounting direction of the hydraulic cylinder is changed. [Description of Signs] 2 wheels 3 wheels 4 wheels 5 wheels 6 front wheel suspension device 7 front wheel suspension device 11 strut assembly 21 torsion bar 23a left arm portion 23b left arm portion 23b right arm portion 24 hydraulic cylinder 25 relief valve device 26 piston rod 27 piston 27a communication passage 28 cylinder body 30 lower oil chamber 32 reserve tank 32b free piston 32c oil chamber 32d high-pressure gas chamber 33 check valve 34 relief valve 35 communication pipe 36 valve body 37 throttle member 38 main oil passage 39 valve body 41 compression coil spring 44 auxiliary communication pipe 47 orifice

────────────────────────────────────────────────── ─── Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60G 21/02-21/055

Claims (1)

(1) A stabilizer device for a vehicle in which both ends of a torsion bar rotatably supported by a vehicle body are pivotally mounted on the wheel side of a suspension device for respectively suspending left and right wheels. A hydraulic cylinder having a throttled piston fixed to a piston rod inserted into a cylinder body at a connection portion between both ends of the torsion bar and the left and right suspension devices, and a hydraulic cylinder having a cylinder inserted into one of the suspension device and the torsion bar. The main body is connected and a piston rod is connected to the other and interposed, and the oil chamber on the compression side when compressed in the hydraulic cylinder is compressed by the free piston urged by the high-pressure gas. The check valve is connected to the reserve tank via a check valve and a relief valve, and the check valve is connected so that oil flows only to the hydraulic cylinder side. ,
The relief valve is formed by inserting a valve body movably along an axial direction of the valve body into a valve body in which a main oil passage is formed and biasing the valve body toward a closing side by a spring. A stabilizer device for a vehicle, wherein an end surface is communicated with an oil chamber of the hydraulic cylinder via an oil passage with a throttle.