JPS5823685Y2 - Automotive anti-roll bar mounting structure - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for an anti-roll bar for an automobile.

Automotive anti-roll bars (or stabilizers) are
Generally, it is formed from a rod-shaped material in a substantially U-shape, and has a straight intermediate part, and a pair of left and right parts that are connected to both longitudinal ends of this intermediate part and are curved in a dogleg shape and extend forward. The intermediate portion is rotatably supported on the vehicle body side, and both leg portions are connected to the axle side.

The structure is such that tilting of the vehicle body due to centrifugal force can be suppressed when the vehicle turns.

However, in the past, since both legs of the anti-roll bar were substantially fixed to the axle side, the anti-roll bar reacted to irregularities on the road, which had a negative effect on ride comfort.

Furthermore, in order to overcome these drawbacks, it has been proposed that a cylinder is attached to the leg and connected to the axle via a piston rod built into the cylinder.

However, this product has a complicated and expensive structure, and since it has mutual sliding contact parts such as a piston and cylinder, its operation is unstable and reliability is affected, and maintenance such as oiling, inspection, and replacement of parts is required. However, since the leg portion and the axle side make complex movements that include not only relative linear movement but also circular arc movement, strain is likely to occur in the piston-cylinder portion, and this results in poor durability. It has many flaws, including a lack of sexuality.

The present invention was developed based on the above-mentioned circumstances, and its purpose is to create an anti-roll bar for automobiles that is simple in structure, inexpensive, stable in operation, and has excellent durability and reliability. The purpose is to provide a mounting structure.

Hereinafter, the present invention will be described with reference to an illustrated embodiment.

In FIG. 1, a pair of left and right lower arms 1.1 are supported on the vehicle body (not shown) side of an automobile so as to be rotatable on an axis in the approximately longitudinal direction, and each outer end has an axle (not shown). ) is installed.

The anti-roll bar 2 is formed from a rod-shaped material into a substantially U-shape, and includes an intermediate portion 2a, a pair of left and right curved oil portions 2b, 2b connected to both ends of the intermediate portion 2a, and these curved portions 2b, 2b. It is integrally equipped with a pair of left and right leg parts 2c and 2d that extend forward in connection with the intermediate part 2a, and is rotatably supported by the vehicle body via fittings 3, 3 through which the intermediate part 2a is inserted. There is.

One leg 2c is connected to the corresponding lower arm 1.degree. 1 via the first connection member 4, and the other leg 2d is connected to the corresponding lower arm 1.degree.1 via the second connection member 5.

The first connecting member 4 is made of a suitable rod-shaped member (which may be solid or hollow) and has leg portions 4b connected to the horizontal members 4a-h and both ends thereof.

4b, and is formed into a substantially U-shape.

4b is, for example, a nut 4c, as illustrated in FIG.
4c, etc., is fixed to one of the lower arms 1, and forms a substantially rectangular through hole 6 in the front and rear direction together with the lower arm 1.

One leg portion 2c of the anti-roll bar 2 is loosely inserted into the through hole 6.

As shown in an enlarged view in FIG. 3, the second connecting member 5 includes rubber bushings 5a disposed on both upper and lower sides of the other lower arm 1 and the other leg portion 2d of the anti-roll bar 2, respectively. , washers 5b closely arranged on both upper and lower sides of the rubber pushers 5a...
・A spacer 5c arranged in the middle of the lower arm 1 and the leg 2d, a vertical bolt 5d commonly inserted through these parts, and a nut 5e screwed into the bolt 5d of the lower arm 1 and the leg 2d. The lower arm 1 and the leg portion 2d are connected so as to be relatively tiltable and relatively rotatable around the pole 5a, but the relative displacement in the longitudinal direction of the pole 5d, that is, in the vertical direction is is effectively suppressed.

In the device configured as described above, when the vehicle body tilts to the right due to centrifugal force during turning, the anti-roll bar 2
The anti-roll bar 2 also tilts downward to the right, but since the right leg 2d is prevented from vertically displacing with respect to the lower arm 1, the anti-roll bar 2 is rotated around the axis of the intermediate section 2a, and the left leg The portion 2c is also rotated upward.

The second connecting member 5 of the left leg 2c is set so that it is located approximately at the center of the through hole 6 when the vehicle is running horizontally, so when the vehicle body is tilted at a predetermined angle from the horizontal position, the leg 2c is The portion 2c does not come into contact with the horizontal member 4a of the first connecting member 4.

If the vehicle body tilts further to the right with the leg portion 2c in contact with the lateral member 4a, the anti-roll bar 2 is twisted, so that the right tilt of the vehicle body is suppressed.

Further, when the vehicle body tilts to the left, an operation in the opposite direction to that described above is performed, and the left tilt of the vehicle body is suppressed with the leg portion 2c in contact with the lower arm 1.

That is, the leg portion 2c, the horizontal member 4a, and the lower arm 1
By providing clearances of δ1 and δ2 between the two, a dead zone of δ1+δ2 is formed as illustrated in FIG.
As shown by a solid line A in the figure, a restraining force W acts on the vehicle body against inclinations exceeding this dead zone.

On the other hand, due to unevenness on the running road, the lower arm 1 on the right side
is rotationally displaced relative to the vehicle body, the second
Although the anti-roll bar 2 is rotated by the vertical movement of the connecting member 5, the rotation of the anti-roll bar 2 is not suppressed unless the leg portion 2c is displaced beyond the dead zone.

Further, even when the left lower arm 1 is rotationally displaced, the rotation of the anti-roll bar 2 is not suppressed unless the leg portion 2c is relatively displaced beyond the dead zone.

That is, in any case, as long as the leg portion 2c is within the dead zone, the anti-roll bar 2 is rotatable, so the rotational displacement of the lower arms 1, 1 does not have any effect on the vehicle body. There is no.

Therefore, by appropriately setting the widths δl and δ2 of the dead zones, it is possible to effectively suppress the tilt of the vehicle body during turning, and also to block the operation of the anti-roll bar due to unevenness of the running road. It is possible to obtain a good riding comfort.

Furthermore, when the automobile is running calmly, one leg 2c of the anti-roll bar 2 is not loosely inserted into the through hole 6 and comes into contact with the first connecting member 4, and the dead zone is Within the range, anti-roll bar 2 and the first and second
There is no strain on the connecting members 4 and 5.

Moreover, even outside the range of the dead zone, the relative displacement of the leg portion 2c in the vertical direction is only limited, so that, as described above, smooth displacement is possible without straining the various parts.

Therefore, operation is always stable and highly reliable.

Incidentally, the broken line B in FIG. 4 indicates the characteristics of the conventional device which does not have a dead zone, and cannot provide good riding comfort in response to unevenness on the traveling road.

FIG. 5 shows a modification of the first connecting member 4.

As illustrated in A, B, and C of the figure, a pair of horizontal members 4a,
4a may be provided, and one of them 4a may be used instead of the lower arm 10.

! In addition, these horizontal members 4a, 4a are provided with collars 7 and 4a, respectively.
It is preferable that the collar 1 is rotatably provided, and the collar 1 is preferably made of synthetic resin or the like and has a cylindrical shape.

Furthermore, the through hole 6 may be an open type as shown in FIGS. 1, 2 and 5A instead of a closed type as shown in FIGS. 1, 2 and 5A, and in such a case, In order to prevent the collar 7 from falling off, a snap ring 8 is provided or a horizontal member 4a is provided.

It is preferable to deform the free end of 4a as appropriate and press the button.

If necessary, as shown in the same figure, a pair of horizontal members 99 made of, for example, a synthetic resin material may be attached to the support member 10 in opposing positions at intervals, or as shown in FIG. A member 11 made of a synthetic resin material and having a through hole 6 in the center may be attached to the support member 10.

As described above, the collars 7 are provided and the leg portions 2c are in rolling contact with these collars 7, and the collar 1 button and the horizontal member 9 are made of a synthetic resin material, or the member 11 made of a synthetic resin material is used. This makes it possible to prevent wear of the leg portions 2c and improve durability, and also to suppress the generation of contact noise.

In any of the above cases, the first connecting member 4 has a very simple structure, is inexpensive to manufacture and install, and does not require much effort for maintenance.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, the first connecting member 4 may be provided in place of the second connecting member 5, and in such a case, the Alternatively, a spring member for positioning the anti-roll bar 2 may be provided.

Various other changes and applications are possible within the scope of the gist of the invention.

In the present invention, as described above, at least one of the legs of the anti-roll bar is loosely inserted into the through hole of the connecting member arranged on the axle side, so the structure is simple and inexpensive. Stable operation and durability
A highly reliable mounting structure for an automobile anti-roll bar can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention, and Fig. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is an enlarged cross-sectional view of the second connecting member, FIG. 4 is a diagram for explaining operating characteristics, and FIGS. 5A, B, C, D, and E are front views showing modified examples of the first connecting member. 1...Lower arm, 2...Anti-roll bar, 2
a... Middle part, 2b... Curved part, 2c, 2d...
Leg portion, 3... Attachment, 4... First connecting member, 5.
...Second connecting member, 6...Through hole.

Claims (1)

[Scope of utility model registration request] An anti-roll bar having an intermediate portion rotatably supported on the vehicle body side and both left and right leg portions connected to the axle side, wherein at least one of the two leg portions is disposed on the axle side. A mounting structure for an automobile anti-roll bar, characterized in that it is loosely inserted into a through hole of a connecting member.