JPH0629050Y2 - Vehicle stabilizer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a stabilizer device for a vehicle used in a suspension mechanism portion of an automobile or the like.

[Prior Art] A stabilizer device for a vehicle is used to suppress a roll angle of a vehicle body when traveling on a curve or the like and to enhance maneuverability and stability. Conventionally, as shown in FIGS. 9 and 10, this type of stabilizer device includes a stabilizer body c having a torsion portion a along the vehicle width direction and arm portions b and b connected to both ends of the torsion portion a. , First and second connecting means e, f for connecting the ends of the arms b, b of the stabilizer main body c to the vehicle-side or axle-side supporting portion, in this example, the lower link d of the suspension on the axle side. It is configured with and.

As shown in FIG. 11, the conventional connecting means e and f have a structure in which a vertical rod g, a nut h, a rubber bush i, a sleeve j, and the like are combined.

However, in the case of such a configuration, the arm part b,
The end of b and the lower link d are always fixedly connected, and the torsional rigidity is uniquely determined. Therefore, even when conditions such as road conditions and vehicle loading conditions change, the performance of the stabilizer remains at the initial setting, and there is a problem that the performance of the stabilizer does not match the changed conditions.

Therefore, in order to solve this problem, the actual exploitation Sho 61-8
As disclosed in Japanese Patent Publication No. 4008, in a vehicle stabilizer in which a torsion bar is supported by a supporting member on the vehicle body side or left and right wheel sides of a vehicle via a connecting rod, the connecting rod is provided on either the supporting member or the torsion bar. It has been proposed that the function of the stabilizer can be exerted or blocked by supporting the slider so as to be slidable and preventing the sliding of the connecting rod as necessary.

[Problems to be solved by the invention] However, according to this structure, since the space for the connecting rod length is always dedicated without changing the length of the mounting position, a mounting space larger than that of the conventional mounting structure is required. There was a problem with. Further, when the connecting rod can move up and down, the spring action of the torsion bar is completely lost, so that there is a problem that delicate tuning according to the running condition is impossible.

The present invention has been made based on the above circumstances, and the purpose thereof is to be able to selectively switch between a state in which the function of the stabilizer is strengthened and a state in which the function of the stabilizer is weakened, while having a simple and space-saving configuration. Performance that is suitable for road conditions and loading conditions, and
An object of the present invention is to provide a stabilizer device for a vehicle that can be easily tuned according to the running conditions of the vehicle.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a stabilizer body having a torsion portion and arm portions connected to both ends of the torsion portion, and an end portion of the arm portion of the stabilizer body. A stabilizer device for a vehicle, comprising: first and second connecting means for connecting the vehicle to a vehicle-side or axle-side supporting portion, wherein at least one of the first and second connecting means is connected. A tool main body, a piston housed in a cylinder chamber formed in the connector main body, and a piston rod connected to the piston, and one of the connecting parts formed on the connector main body and the piston rod is the arm. Cylinder device connected to the end of one part and the other to the support part, and a pistol attached to the cylinder device and capable of projecting and retracting in the cylinder chamber A lock mechanism having a lock mechanism, and a switching mechanism for projecting the piston lock member of the lock mechanism into the cylinder chamber to prevent movement of the piston or withdraw from the cylinder chamber to release the lock operation. It is configured as follows.

[Operation] That is, according to the present invention, the end portion of the arm portion of the stabilizer main body and the support portion on the vehicle body side or the axle side are connected by an extendable cylinder device, and a piston lock mechanism is attached to the cylinder device. Since the expansion and contraction of the device can be prevented, the stabilizer function can be exerted or prevented. Further, the cylinder device has a connector body, a piston housed in a cylinder chamber formed in the connector body, and a piston rod connected to the piston, and the cylinder device is formed on the connector body and the piston rod. Since one of the connecting portions is connected to the end portion of the arm portion and the other is connected to the supporting portion, there is no protruding portion at the upper and lower portions of the connecting portion so that the operation is performed without securing a large space. It is possible, and it is possible to downsize and save space. In addition, by storing elastic members on both sides of the piston in the cylinder chamber as needed, a spring action can be generated by the elastic members even when the cylinder device is expandable and contractable, and it is possible to make a delicate adjustment according to running conditions. Tuning is possible. Further, by changing the spring constant of the elastic member housed in the cylinder chamber, it is possible to perform a wide tuning in accordance with the running conditions of the vehicle.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 shows the entire structure of the stabilizer device 1.
The stabilizer device 1 has the following configuration. That is, reference numeral 2 in the drawing denotes a stabilizer main body formed by bending a hollow material made of metal such as steel into a desired shape. The stabilizer main body 2 has a torsion portion 3 along the vehicle width direction and arms connected to both ends of the torsion portion 3. It consists of parts 4 and 4. The stabilizer main body 2 is attached to the vehicle body (not shown) through the fasteners 5, 5 in which the torsion portion 3 has a built-in rubber bush, and the end portions 4a of the arm portions 4, 4 are attached as shown in FIG. Is connected to the lower links 8 and 8 (only the second connecting means 7 side is shown) as a supporting portion on the axle side via the first and second connecting means 6 and 7.

The first connecting means 6 has a well-known configuration including a rod 10 having a nut 9 screwed onto the upper end thereof, a rubber bush 11 ..., And a sleeve 12, and detailed description thereof will be omitted.

In addition, the second connecting means 7 is the end portion 4 a of the arm portion 4.
Cylinder device 1 for connecting the lower link 8 and the lower link in a stretchable manner
5 and a lock mechanism 1 attached to the cylinder device 15.
6 and a switching means 17 for switching the lock mechanism 16 so that the cylinder device 15 can be expanded or contracted or cannot be expanded or contracted.

The cylinder device 15 is configured as shown in detail in FIG. That is, 20 is a cylinder chamber 21 inside.
And a piston 23 is vertically movable in the cylinder chamber 21 of the connector body 20. The piston 23 is in a state of being connected to a lower end portion of a piston rod 25 whose upper end side is led out to the outside through a rod insertion hole 24 formed in an upper end surface of the connector main body 20. Further, both sides of the piston 23, that is, the upper and lower cylinder chambers 21 separated by the piston 23.
Coil springs 26 and 27 as elastic members that generate a spring action by the movement of the piston 23 are housed in a and 21b.

Further, male threads are engraved on the lower end of the mounting shaft 22 and the upper end of the piston rod 25, respectively, to form first and second connecting portions 28 and 29.

In the cylinder device 15 configured as described above, the arm portions are formed with the rubber bushes 30 interposed between the first and second connecting portions 28 and 29 by known means as shown in FIG. 4 and the lower link 8 are connected to each other.

In addition, the lock mechanism 1 attached to the cylinder device 15
6 has the following configuration. That is, as shown in FIGS. 3 and 4, a casing 35 is integrally formed in an intermediate portion in the vertical direction of the connector main body 20 of the cylinder device 15, and a lock as a piston lock member is formed in the casing 35. The claws 36 and 37 have their tips 36
The a and 37a are housed movably in the horizontal direction so as to project and retract in the cylinder chamber 21. These lock claws 36,
The coil springs 38, 38 serve as biasing members so that the respective tip portions 36a, 37a of the cylinders 37 are provided in the cylinder chamber 21.
It is urged to always project inward. Further, the tip portions 36a, 37a of the lock claws 36, 37 are tapered portions 36b, 37b with the apex facing each other,
The upper lock pawl 36 prevents only the upward movement of the piston 23, and the lower lock pawl 37 prevents only the downward movement of the piston 23. Further, the upper and lower lock members 3
The dimension between the mutually facing surfaces of 6, 37 is set to be slightly larger than the thickness of the piston 23. Then, as shown in FIG. 3, the piston 23 can be fixed between the locking claws 36 and 37.

In addition, the lock pawls 36 and 37 have one end portion which is the casing 3.
5 Connecting pin 4 which is projected to the outside and hooked on the plate 39
0 and 40 are connected respectively. Also, plate 3
Reference numeral 9 denotes an operation unit 41 provided at a driver's seat (not shown) at one end.
The wire 42 connected to (see FIG. 1) is in a connected state. Then, by pulling the wire 42 through the operating portion 41, the lock claws 36 and 37 can be retracted from the inside of the cylinder chamber 21 and the locking operation of the piston 23 can be released, as shown in FIG. Further, when the wire 42 is loosened via the operation portion 41, the lock claws 36, 37 are locked by the coil springs 38, 38 so that the tips of the lock claws 36, 37 project into the cylinder chamber 21. Like this,
The switching means 17 is configured.

Next, the operation of the stabilizer device 1 configured as described above will be described.

First, when it is desired to weaken the function of the stabilizer device, for example, when the road condition is poor and the riding comfort is desired to be improved, the wire 42 is pulled by the operation unit 41. As a result, as shown in FIG. 4, the lock claws 36 and 37 are retracted from the inside of the cylinder chamber 21, and the piston 23 is vertically movable. As a result, the cylinder device 15 functions as an elastic body having the spring constant of the coil springs 26 and 27. Further, when viewed as the stabilizer device 1 as a whole, the spring action of the stabilizer main body 2 and the spring action of the cylinder device 15 are connected in series. This characteristic is a two-stage characteristic for the cylinder device 1 because the spring action of the cylinder device 15 is lost when the coil springs 26, 27 are in close contact with each other as shown by the line a in FIG.

Further, when it is desired to enhance the function of the stabilizer device 1, for example, when the road condition is good and the steering stability and the grounding property of the vehicle are desired to be improved, the wire 42 is loosened by the operation unit 41.

When the wire 42 is loosened, the lock claws 36 and 37 tend to move forward into the cylinder chamber 21 by the biasing forces of the coil springs 38 and 39. At this time, if the piston 23 is in the lock position, the piston 23 advances to the forward end as it is, and the state of FIG. Further, when the piston 23 moves upward from the position below the lock position, first, the upper end edge of the piston 23 hits the lower lock claw 37 against the tip taper part 37b to push the lock claw 37, and the tip thereof. Part 37
a is retracted from the cylinder chamber 21. After that, the piston 21 hits the lower surface of the upper lock claw 36 and is prevented from moving upward. At the same time, the lower lock claw 37 moves forward again, and the tip portion 37a thereof projects into the cylinder chamber 21 and the downward movement of the piston 23 is blocked, resulting in the state shown in FIG.

Conversely, when the piston 23 moves downward from above, the piston 23 is similarly fixed at the lock position.

The characteristic in this state is the characteristic of only the stabilizer main body 2 as shown by the line b in FIG.

Then, the end portion 4a of the arm portion 4 of the stabilizer main body 2 and the lower link 8 are connected by the expandable cylinder device 15, and the cylinder device 15 is provided with the piston lock mechanism 16 to expand and contract the cylinder device 15. Since it can be blocked as needed, the stabilizer function can be strengthened or weakened. Further, the cylinder device 5 has a connector body 20, a piston 23 housed in a cylinder chamber 21 formed in the connector body 20, and a piston rod 25 connected to the piston 23. One of the connecting portions 28 and 29 formed on the body 20 side and the piston rod 25 is connected to the end portion 4 of the arm portion 4.
Since the structure is such that it is connected to a and the other is connected to the lower link 8, there is nothing protruding at the upper and lower parts of the connecting portion, so that it is possible to operate without securing a large space as in the conventional case, It enables downsizing and space saving.
Further, even when the cylinder device 15 is in an expandable / contractible state, the coil springs 26 and 27 housed in the cylinder chamber 21 have a spring action, which enables delicate tuning according to running conditions. Further, by changing the spring constants of the coil springs 26 and 27 which are arranged on both sides of the piston 23 and generate a spring action by the movement of the piston 23, it is possible to perform a wide tuning according to the running condition of the vehicle.

The present invention is not limited to the above embodiment. For example, as shown in FIG. 6, a lock member for restricting the movement of the piston 23 is rotatably housed in the recesses 50, 50 formed in the connector main body 20 and the connecting pin 4 is provided.
Link type lock claws 51 and 52 that are connected to 0 and 40 and that rotate as the wire 42 moves may be used. Also,
The switching means 17 is a manual switching system having a wire 42, but as shown in FIG. 7, a plunger 56 integrated with a connecting member 55 that engages with the connecting pistons 40, 40, and the plunger 56 of the coil springs 38, 38. Alternatively, the lock claws 36 and 37 that are sucked against the biasing force and are pulled out from the cylinder chamber 21 may be configured by an electromagnetic solenoid 58 including a coil 57 and electrically switched. Further, although the connection portion 29 is directly connected to the end portion 4a of the arm portion 4, the ball joint 60 is attached to the connection portion 29 as shown in FIG. You may Furthermore, piston 2
Although the coil springs 26 and 27 are arranged on both sides of No. 3, the coil springs 26 and 27 may not be used depending on the tuning conditions.

Further, although the case where the end portion 4a of the arm portion 4 of the stabilizer main body 2 is attached to the lower link 8 on the axle side has been described, it may be applied to a method of attaching to the vehicle body side.

Further, although the second connecting means 7 side is configured to be switchable between the movable state and the non-movable state, the first connecting means 6 side may have this configuration, and further, both connecting means 6, 7 are provided. May have this configuration. The point is that at least one of the connecting means has such a configuration.

In addition, the present invention can be variously modified without departing from the spirit of the invention.

In the description of the other embodiments (FIGS. 6 and 8) described above, the same parts as those in the above-mentioned embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

[Advantage of the Invention] As described above, according to the present invention, the size of the function of the stabilizer can be selectively switched while the structure is simple and space-saving, and the performance suitable for the road condition and the loading condition can be obtained. In addition, it is possible to provide a vehicle stabilizer device in which the tuning can be easily performed according to the running condition of the vehicle.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention.
FIG. 1 is a perspective view showing the entire stabilizer device, FIG. 2 is a schematic perspective view of an essential part showing an attached state, FIG. 3 is a sectional view of a connecting means which is an essential part, and FIG. 4 is a lock of a lock mechanism. FIG. 5 is a cross-sectional view showing a released state, FIG. 5 is a view showing a spring characteristic, FIGS. 6 and 7 are cross-sectional views showing other different embodiments of the connecting means, which is a main part, and FIG. FIGS. 9 to 11 showing a modified example show a conventional example.
FIG. 10 is a perspective view showing the entire stabilizer device, FIG. 10 is a schematic perspective view of an essential part showing a mounting state, and FIG. 11 is a sectional view of a connecting means which is an essential part. DESCRIPTION OF SYMBOLS 1 ... Stabilizer device, 2 ... Stabilizer main body, 3 ... Torsion part, 4 ... Arm part, 4a ... End part of arm part, 6
... first connecting means, 7 ... second connecting means, 8 ... supporting portion (lower link), 15 ... cylinder device, 16 ... lock mechanism, 17 ... switching means, 20 ... connector body, 21 ... cylinder chamber, 23 ... piston, 25 ... piston rod, 2
6, 27 ... Spring, 36, 37, 51, 52 ... Piston lock member (lock claw).

Claims (2)

[Scope of utility model registration request] 1. A stabilizer body having a torsion portion and arm portions connected to both ends of the torsion portion, and first and first connecting the end portion of the arm portion of the stabilizer body to a support portion on a vehicle body side or an axle side. A vehicle stabilizer device comprising two connecting means, wherein at least one connecting means of the first and second connecting means is housed in a connecting body and a cylinder chamber formed in the connecting body. And a piston rod connected to the piston, wherein one of the connecting parts formed on the connector body and the piston rod is connected to an end of the arm part and the other is connected to the supporting part. A cylinder device, a lock mechanism attached to the cylinder device, having a piston lock member capable of projecting and retracting in the cylinder chamber, and a lock mechanism of the lock mechanism. A stabilizer device for a vehicle, comprising: switching means for projecting the piston lock member into the cylinder chamber to prevent movement of the piston or withdraw from the cylinder chamber to release the lock operation. 2. The stabilizer device for a vehicle according to claim 1, wherein springs are mounted on both sides of the piston.