JPH039136A - Mounting structure for strut upper mount - Google Patents

Abstract

PURPOSE:To hold the rigidity at a fixed value, when wheel alignment is adjusted, by setting a point, adjacent to a high rigid car body side, of the plural ity of the first mounting points in the flange of a strut upper mount to serve as the specific point so as to turn the flange with the specific point serving as the center. CONSTITUTION:A plurality of through holes 40 are provided so as to form an equilateral triangle in a flange 12 of a strut upper mount 10, and a mounting hole 42 corresponding to the holes 40 is provided in a strut tower 30. The strut tower 30 is secured to a car body reinforcing member 36 of high rigidity, and the mounting hole 42, most adjacent to the member 36, and the through hole 40 of the flange are set to a specific point for serving as the first mounting point. Holes 42b, 42c other than the specific point hole 42a of the equilateral triangular mounting hole 42 are formed in a long circle with the hole 42a serv ing as the center. Accordingly, when the flange 12 is turned with the first mount ing point serving as the center as the time of adjusting the mount 10, rigidity is always held because the specifice point is always placed at a fixed distance from the reinforcing member 36.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a structure for attaching a strut upper mount to a vehicle body in a suspension equipped with struts.

Conventional technology In general, suspensions with struts include:
The lower end of the strut is attached to the knuckle arm of the front wheel, and the lower end of the strut is attached to the knuckle arm of the front wheel. The ring is fixed to the spindle, and the upper end of the strut (the upper end of the piston rod) is supported by the vehicle body via a strut upper mount.

The upper end of the strut is housed in a strut tower that is recessed inward from the inner panel of the vehicle body, and the flange of the strut upper mount is attached to the upper closed end of the strut tower. .

By the way, the mounting portion of the strut upper mount is formed by forming a plurality of mounting holes in the flange as disclosed in Japanese Utility Model Application Publication No. 55-149402, and is bolted to the upper end of the strut tower through the mounting holes. In addition, in the publication, a plurality of combinations of the mounting holes with respect to the mounting holes on the vehicle body are arranged in a relative deviation arrangement, and the direction of rotation between the strut upper mount and the vehicle body is adjusted. By changing the relative position, it is possible to adjust the camber and caster of the wheel alignment.

Problems to be Solved by the Invention However, in such a conventional strut upper mount mounting structure, as shown in FIG. When the strut upper mount is supported at three points and the mounting position of the strut upper mount is changed, the three mounting points aI+b l+Cr are also rotated as a whole and become the position a l b2rC2.

Therefore, the attachment point a1 closest to the reinforcing member m, which is a highly rigid vehicle body side member that supports the strut upper mount, such as a vehicle body panel configured with a closed cross-sectional shape, has a distance of 1° from the reinforcing member m of 32 When the point is moved to 1. This changes the support rigidity of the strut.

It has been confirmed that the support rigidity of the strut upper mount is approximately determined by the attachment point closest to the highly rigid part.

When the support rigidity of the strut is changed in this way, there is a problem in that the sound and vibration performance of road noise input to the vehicle body through the strut varies.

SUMMARY OF THE INVENTION In view of these conventional problems, it is an object of the present invention to provide a strut upper mount mounting structure that allows wheel alignment to be adjusted while maintaining strut support rigidity constant.

Means for Solving the Problems In order to achieve the object, the present invention includes a strut upper mount that supports the upper end of the strut toward the vehicle body, and the flange of the strut upper mount is attached to the vehicle body through a plurality of first attachment points. In the suspension mounted on the side, among the plurality of first attachment points formed on the flange, the first attachment point closest to the highly rigid vehicle body side member that supports the strut is defined as a specific point; A plurality or one second attachment point on the vehicle body corresponding to the point is formed with a constant distance from the vehicle body side member, and when the flange is rotated around the specific point, the second attachment point is attached to the specific point. Second attachment points corresponding to the first attachment points other than those mentioned above are formed on the vehicle body side.

Effect With the strut upper mount mounting structure of the present invention, the strut upper mount is rotated around a specific point formed on the flange, and the specific point is attached. The second mounting point on the vehicle body side is located at a constant distance from the highly rigid vehicle body side member, so even if the strut upper mount is rotated and the wheel alignment is changed, the support rigidity of the strut remains constant. can be kept constant.

Example Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

That is, FIG. 1 and FIG. 2 show one embodiment of the present invention, and FIG.
Reference numeral 10 in the figure indicates a strut upper mount, and the strut upper mount 10 includes an outer cylinder 14 on which a flange I2 is formed, an inner cylinder 16 disposed at the center of the outer cylinder 14, and an inner cylinder 16 arranged at the outer cylinder 14°. and a rubber insulator 18 interposed between.

A piston rod 20 of a strut is fixed to the inner cylinder 16 via a nut 22.

Further, 30 is a substantially cylindrical strut tower that accommodates the above-mentioned struts, and the strut tower 30 is connected to the vehicle body panel 3.
It is fixedly installed on the inside of 2 by spot welding or the like.

Incidentally, the vehicle body panel 32 to which the strut tower 30 is fixedly installed is provided with a reinforcing member 36 as a highly rigid vehicle body side member by configuring the panel 32 in a closed cross-sectional shape. strut tower 3
The upper end of 0 is supported.

The upper closed end 30a of the strut tower 30 is formed with an opening 34 through which the outer cylinder 14 of the strut upper mount 10 is inserted, and the flange 12 is connected to the bolt 38 and the bolt on the lower side of the periphery of the opening 34. It is attached via a nut (not shown) that is screwed onto 38.

Therefore, the flange 12 is formed with an insertion hole 40 through which the bolt 38 is inserted, and the insertion hole 40 is used as a first attachment point. is formed, and the mounting hole 42 is used as a second mounting point.

The insertion holes 40, which are the first attachment points, are formed at three locations around the center of the strut upper mount IO so as to form the vertices of a substantially equilateral triangle, and the attachment holes 42, which are the second attachment points, are formed through the insertion holes 40, which are the first attachment points. They are formed corresponding to the holes 40, respectively.

That is, points A, B, and 0 shown in FIG. 1 indicate the formation positions of the mounting holes 42, and are arranged so as to correspond to the insertion holes 40 and form the apexes of a substantially equilateral triangle.

At this time, the one closest to the reinforcing member 36 among the three insertion holes 40 is defined as a specific point, and the position of the mounting hole 42 corresponding to the specific point is defined as A.

In this embodiment, a plurality of mounting holes 42 (A, -A,) corresponding to the specific points are formed with the distance from the reinforcing member 36 kept constant.

On the other hand, mounting holes 42 other than the mounting hole 42 corresponding to the above point A
Point B and point 0 correspond to point A.

Along with being changed to ~A4, B and ~B4 respectively
and C, -C4 are set.

The formation positions of A, -A, , B, ~B4, and C5 to C2 are set such that the center O of the strut upper mount 10 is moved (o, ~04) along the left-right direction of the vehicle. .

With the above structure, in the mounting structure of the strut upper mount 10 of this embodiment, when one of the insertion holes 4o formed in the flange 12 is installed at point A1, the remaining two insertion holes 4o are installed at point B, point and C8 point, and the center 0 of the strut upper mount 1o at this time is located at 01.

Next, when one of the insertion holes 4o is attached to point A2, the remaining insertion holes 4o are attached to points B1 and C1, and the center 0 at this time is located at position O3.

In this way, change the mounting position of one insertion hole 4o from A to A.
,,A3. When moving to A, the installation positions of the other insertion holes 4o also change from B, to B*, B-, B.
, and moved from C1 to c, ,Cat c,
The center 0 above is 0. From 0. ．． Changed to 03 and 04.

In other words, the center of the strut upper mount 1° is 0.
By changing the lateral direction of the vehicle, the camber angle and kingpin axis of the wheel alignment can be changed, and by changing the mounting position of the strut upper mount 1o, the wheel alignment can be adjusted. be able to.

By the way, in this embodiment, when adjusting the wheel alignment, the strut upper mount 1
Even when the mounting position of 0 is changed, the position of the insertion hole 40 as the specific point closest to the ridge member 36 is A, ~A4.
However, since the distance 111L from the reinforcing member 36 is set constant for both A and -A, the rigidity of the strut upper mount 10 supported by the reinforcing member 36 is maintained constant. be done.

Therefore, variations in support rigidity of the struts are prevented even when wheel alignment is adjusted.
We can always provide standardized products.

FIG. 3 shows another embodiment, in which the same components as those in the above embodiment are denoted by the same reference numerals and redundant explanations will be omitted.

That is, in this embodiment, the mounting hole 4 corresponding to the specific point
2a is set at one location, and the attachment holes 42b and 42C corresponding to the remaining two insertion holes 40 are formed into arc-shaped elongated holes centered on the attachment hole 42a.

Therefore, in this embodiment, the mounting hole 4 is formed to be long.
The strut upper mount (not shown) can be moved within 2b and 42C, and by moving the strut upper mount in this way, the center of the strut upper mount is changed from 0' to O'. become.

In other words, the trajectory of movement from O' to 0' described above is: 1. Depicting an arc inclined in the longitudinal direction of the vehicle with respect to the right direction of both people,
Wheel alignment is camber angle.

In addition to the kingpin axis, the toe angle and caster angle can be adjusted.

By the way, in this embodiment, the mounting hole 42a is set as a second mounting point corresponding to a specific point, and the mounting hole 42a is set as a second mounting point corresponding to a specific point.
Since the position of 2a is fixed, the support rigidity of the strut upper mount can be kept constant.

In this embodiment, the upper peripheral edge 30b of the strut tower 30 is used as a highly rigid vehicle body side member, and the mounting hole 42a is formed near the upper peripheral edge 30b.

As described in detail, in the strut upper mount mounting structure of the present invention, one of the plurality of first mounting points formed on the flange of the strut upper mount has a rigidity that supports the strut. The first attachment point closest to the high vehicle body side member is defined as a specific point, and a second attachment point on the vehicle body corresponding to the specific point is formed at a constant distance from the vehicle body side member, and the specific point is the center point. Since the flange is rotated, even when the strut upper mount is rotated to adjust the wheel alignment, the second attachment point on the vehicle body side where the specific point is attached is attached to the vehicle body side with high rigidity. Since the distance from the member is constant, the supporting rigidity of the strut can be kept constant at all times, which is an excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention, FIG. 2 is a sectional front view showing one embodiment of the present invention, FIG. 3 is a plan view showing another embodiment of the present invention, and FIG. FIG. 2 is a plan view showing a conventional strut upper mount mounting structure. DESCRIPTION OF SYMBOLS 10... Straft upper mount, 12... Flange, 20... Piston rod, 30... Strut tower, 30b... Upper end peripheral part (highly rigid vehicle body side member), 36... Reinforcement Member (highly rigid vehicle body side member), 40... Insertion hole (first attachment point), 42.42a
, 42b, 42c... Attachment holes (second attachment points). 3 people not shown in Figure 1 Figure 2

Claims (1)

[Claims] (1) In a suspension that includes a strut upper mount that supports the upper end of the strut on the vehicle body side, and in which the flange of the strut upper mount is attached to the vehicle body side via a plurality of first attachment points, a plurality of struts formed on the flange are provided. Among the first attachment points, the first attachment point closest to the highly rigid vehicle body side member that is intended to support the strut is defined as a specific point, and the second attachment point on the vehicle body corresponding to the specific point is defined as the second attachment point on the vehicle body side. A plurality or one of them is formed keeping a constant distance from the member, and when the flange is rotated around the specific point, the first part other than the specific point is formed.
A strut upper mount mounting structure characterized in that second mounting points corresponding to the mounting points are formed on the vehicle body side.