JPH0630494Y2 - 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 the roll angle of a vehicle body when traveling on a curve or the like to improve 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, a space larger than that of the conventional mounting structure is required because it always occupies a space corresponding to the connecting rod length regardless of the change in the length of the mounting position. 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 main body having a torsion part and arm parts connected to both ends of the torsion part, and an end part of the arm part of the stabilizer main 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. And a piston housed in a cylinder chamber formed in the connector body and a piston rod connected to the piston. One of the connector body and the connecting portion formed on the piston rod is the arm portion. A cylinder device connected to the end of the cylinder device and the other to the support part, and an engagement part formed on the piston rod attached to the cylinder device. And a lock mechanism having a piston rod lock member that can be engaged and disengaged, and the piston rod lock member of the lock mechanism is engaged with the engagement portion of the piston rod to prevent movement of the piston rod or And a switching means for retracting and releasing the lock operation.

[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 in an expandable and contractable state. 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, the housing 35 is integrally provided on the upper end side surface of the connector body 20 of the cylinder device 15 by means of welding or the like. This housing 3
A lock pin 36 as a lock member and a coil spring 37 for constantly urging the lock pin 36 in a predetermined direction are housed in the inside 5. Also, the connector body 2
0 has a state in which a lock pin guide hole 39 is formed so as to communicate with the guide hole 38 for accommodating the lock pin 36 and the coil spring 37, and a state orthogonal to the rod insertion hole 24. On the other hand, piston rod 2
5 shows the lock pin guide hole 39 at the position where the piston 23 is opposed to the vertical center of the cylinder chamber 21.
A through hole 40 is formed as an engaging portion that communicates with.

As a result, as shown in FIG.
The lock pin 36 urged by the piston rod 2
5 penetrates through the through hole 40, and the tip portion 36a thereof enters into the tip portion 39a of the lock pin guide hole 39 so that the piston rod 25 can be fixed.

In addition, one end of the lock pin 36 has a housing 35.
An operation unit 4 that is provided outside and is provided in a driver's seat (not shown)
The wire 42 which is connected to 1 (see FIG. 1) is in a connected state. Then, by pulling the wire 42 from the operating portion 41, the lock pin 36 is pulled out from the through hole 40 of the piston rod 25 as shown in FIG.
The locking operation of the piston rod 25 can be released. Further, by loosening the wire 42 via the operation portion 41, the lock pin 36 penetrates the through hole 40 by the urging force of the coil spring 37, and the piston rod 25 can be locked. is doing.

Reference numeral 45 denotes a connecting member that is fixed to the tip of the wire 42 and engages with a mounting groove formed in the lock pin 36 to connect the two, and 46 urges the lock pin 36 screwed into the housing 35. It is a spring retainer that retains the end of the coil spring 37.

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 pin 36 is pulled out from the through hole 40 formed in the piston rod so that the piston 23 can move up and down. 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 the function of the stabilizer device 1 is desired to be enhanced, 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 operating portion 41.

When the wire 42 is loosened, the lock pin 36 tries to move forward by the biasing force of the coil spring 38. At this time, if the through hole 40 formed in the piston rod 25 is at the lock position where it communicates with the lock pin guide hole 39, the lock pin 36 penetrates the through hole 40 to move the piston rod 25 up and down as shown in FIG. Movement is blocked. When the through hole 40 of the piston rod 25 is above or below the position of the lock pin guide hole 39, the lock pin 36 is moved when the through hole 40 is aligned with the lock pin guide hole 39 by the vertical movement of the piston rod 25. Penetrates and blocks movement.

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, the engaging portion of the piston rod 25 is used as the through hole 40 and the lock pin 36 is engaged in a double-supported state. However, as shown in FIG. 6, the engaging portion of the piston rod 25 is locked as the blind hole 50. The pin 36 may be engaged in a cantilever state. Further, the switching means 17 is connected to the wire 4
As shown in FIG. 7, a plunger 51 integral with the lock pin 36 is provided in the direction in which the plunger 51 is always projected (the direction in which the lock pin 36 engages with the through hole 40). The spring 52 for urging and the electromagnetic solenoid 54 composed of the coil 53 for pulling the lock pin 36 out of the through hole 40 by attracting the plunger 51 against the urging force of the spring 52 may be electrically switched. . Further, although the connection portion 29 is directly connected to the end portion 4a of the arm portion 4 has been described, the ball joint 55 is attached to the connection portion 29 as shown in FIG. You may Further, the coil springs 26,
Although the one in which the coil spring 27 is provided has been described, 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 to 8) described above, the same parts as those in the above-described 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. 1 ... Stabilizer device, 2 ... Stabilizer body, 3
... torsion part, 4 ... arm part, 4a ... end part of arm part, 6 ... first connecting means, 7 ... second connecting means, 8 ... supporting part (lower link), 15 ... ... Cylinder device, 16 ... Lock mechanism, 17 ... Switching means, 20 ...
... Connector body, 21 ... Cylinder chamber, 23 ... Piston, 25 ... Piston rod, 26,27 ... Spring, 3
6, 37, 51, 52 ... Piston rod lock member (lock pin), 40, 50 ... Engaging portion (through hole, blind hole).

Claims (2)

[Scope of utility model registration request] 1. A stabilizer main body having a torsion part and arm parts connected to both ends of the torsion part, and first and first connecting the end part of the arm part of the stabilizer main body to a support part 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 and a piston rod lock member that is attached to the cylinder device and is engageable and disengageable with an engaging portion formed on the piston rod. And a switching means for engaging the piston rod lock member of the lock mechanism with the engaging portion of the piston rod to prevent movement of the piston rod or withdraw from the engaging portion to release the locking operation. A stabilizer device for a vehicle, comprising: 2. The stabilizer device for a vehicle according to claim 1, wherein springs are mounted on both sides of the piston.