JPH11115809A - Strut mounting structure - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a strut support in which a vehicle-body-side mounting portion and a tower-bar mounting portion are provided at different positions, and the strut support can reduce loosening and strength load, and can be fastened. The purpose is to increase the safety factor of the site. For this purpose, in a strut mounting structure for mounting a strut by a strut support, the strut support having a vehicle body side mounting portion for mounting on a vehicle body side and a tower bar mounting portion for mounting a tower bar is provided, and the strut support is mounted on the vehicle body side. The mounting portion and the tower bar mounting portion are provided at different positions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strut mounting structure, and more particularly, to a strut support in which a vehicle body side mounting portion and a tower bar mounting portion are provided at different positions, respectively, to reduce loosening and strength load by the strut support. And a strut mounting structure that can increase the safety factor of the fastening portion.

[0002]

2. Description of the Related Art In a vehicle, a suspension device having a shock absorbing mechanism is provided between a body frame and an axle. The buffer mechanism includes a strut having a damper cylinder and a damper rod.

The strut is formed by pivoting the lower end of a shock absorber to the outer end of a lower control arm,
The wheel support member is directly attached to the shock absorber and also serves as a kingpin, and the upper end of the shock absorber is swingably mounted on the vehicle body side.

A strut mounting structure is disclosed in Japanese Patent Application Laid-Open No. 8-156826. The strut bar mounting structure disclosed in this publication forms a strut bar stay having a suspension mounting seat surface and a strut bar mounting seat surface in a strut bar mounting structure in which a suspension and a strut bar are mounted on a strut tower of a chassis frame. After fixing the stay mounting surface of the stay together with the suspension to the strut tower together with the suspension, the strut bar is fixed to the mounting surface of the strut bar and the nut fixed to the chassis frame of the suspension even in the case of a monocoque vehicle The strut bar can be easily mounted without having to remove it again.

[0005]

In the conventional strut mounting structure, for example, a suspension for a front (also referred to as "FWD") of a strut type automobile is disclosed below.

[0006] As shown in FIGS.
Is fastened to the knuckle 106 by a bolt 108 at a lower end side, and is connected to a side apron 120 of an upper body (not shown) through a strut support 112 at an upper end side.
Is mounted on the mount stay 116 of the chassis frame 114 which protrudes from the chassis frame 114. Reference numeral 102-1
Denotes a damper cylinder of a strut, 102-2 denotes a damper rod, 102-3 denotes a seat on the tip side of the damper rod 102-3, and 102-9 denotes a boot.

At this time, the mount stay 116 is
9 and FIG. 11, the chassis frame 1
14 are provided on the front side and on both left and right sides.

[0008] The mount stay 116 is provided in FIG.
As shown in FIG. 5, when the side apron 120 is disposed so as to protrude toward the engine room 134 from the opening thereof,
As shown in FIG. 10, a cover 140 is provided on the side apron 120, and the cover 140 prevents intrusion of muddy water from the opening into the engine room 134 (see the black arrow in FIG. 5).

When the upper end of the strut 102 is attached to the mount stay 116 via the strut support 112, as shown in FIG.
16 and the spacer 142 above the mount stay 116.
Are provided, and the strut support 112 is fixed to the mount stay 116 by the first fixture 144.

As shown in FIGS. 11 and 12, on the upper part of the spacer 142, the mount stays 1 arranged on the front side and the left and right sides of the chassis frame 114 are provided.
The tower bar 124 communicating with the fixing member 16 is fixed by a second fixing member 146. At this time, when fixing the tower bar 124, as shown in FIG. 12, the tower bar 124 is fixed using the convex seating surface 148 provided on the spacer 142. For this reason, the convex seating surface 148 of the spacer 124
Functions as a tower bar attachment part.

Further, the strut support 112 includes:
As shown in FIGS. 13 and 14, a tubular portion 112A formed into a tubular shape and folded back so that one opening portion side is directed outwardly, and a folded portion 150 is formed, and the other opening portion side of the tubular portion 112A. Flange part 11 formed on
2B, and makes the flange portion 112B function as a vehicle (also referred to as "chassis") side mounting portion. A rubber bush 112C is provided in the cylindrical portion 112A, and a cylindrical inner 112D is held in the rubber bush 112C. Reference numeral 128 is a stud bolt used when the bolt is attached to the vehicle body.

With the structure described above, the strut 10
2 is the tire 15 when the tire 152 makes a stroke.
2 and functions as a support of the suspension 104, and provides a damping force to a force received by the tire 152 from the road surface or a force of the suspension 104 to expand by a spring, and has a function as a cushion.

However, in the case of the above configuration, as shown in FIG. 5, since the mount stay 116 projects from the opening of the side apron 120 toward the engine room 134, the mounting of the mount stay 116 and the strut support 112 is performed. The distance between the location and the chassis frame 114, that is, the height H1 of the mount stay 116 is large,
Since the mount stay 116 is a sheet metal pressed product, the cost is high in terms of mold and process, and there is a disadvantage that it is economically disadvantageous.

Further, since it is necessary to provide the cover 140 in order to prevent muddy water from entering the engine room 134 through the opening of the side apron 120 (see the black arrow in FIG. 5), the number of parts is reduced. This increases the complexity of the configuration and makes it difficult to manufacture, which is disadvantageous in practical use, and has the disadvantage of increasing the cost and disadvantageous in terms of economy.

Further, a lateral force from the road surface ("lateral input")
When F acts, as shown in FIG. 5, the strut 102 tends to fall in the direction A (see the white arrow in FIG. 5). At this time, as shown in FIGS. 11 and 12, the reinforcement is performed by a tower bar 124 connecting the mount stays 116 disposed on the front side and the left and right sides of the chassis frame 114.

However, as shown in FIG. 12, when the strut support 112 is mounted on the mount stay 116, the strut support 112 is fastened together with the spacer 142, and the tower bar 124 is fixed to the spacer 142, so that the height is substantially the same. At this position, the strut support 112, the mount stay 116, and the tower bar 124 are fixed, and a large bending load is generated in the first and second fixtures 144 and 146, which is disadvantageous in terms of strength. Is disadvantageous in that the number of parts increases, the cost increases, and it is economically disadvantageous.

[0017]

SUMMARY OF THE INVENTION Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides a strut mounting structure for mounting struts by strut supports. The strut support having a mounting portion is provided, and the vehicle-body-side mounting portion and the tower-bar mounting portion of the strut support are provided at different positions.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION
The strut support in which the vehicle-body-side mounting portion and the tower-bar mounting portion are provided at different positions reduces looseness and strength burden, and increases the safety factor of the fastening portion.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;

1 to 4 show an embodiment of the present invention. In FIG. 1, 2 is a strut, for example, a front strut.

The lower end of the strut 2 is fastened to the knuckle 6 of the suspension 4 with a bolt 8 and the upper end is connected to the vehicle body 10.

The strut 2 includes a damper cylinder 2-1, a damper rod 2-2, a sheet 2-3 on the tip side of the damper rod 8, and an outer cylinder 2 slidable with respect to the damper cylinder 2-1. -4.

As shown in FIG. 1, the upper end of the strut 2 is mounted on a mount stay 16 of a chassis frame 14 via a strut support 12.

That is, as shown in FIGS. 1 and 2, the lower end of the mount stay 16 is mounted on the chassis frame 14, and an opening 18 is formed in the upper end of the mount stay 16. The strut support 12 is fixed. At this time, the height of the opening 18 at the upper end of the mount stay 16 is substantially the same as the height of the side apron 20 of the upper body (not shown).

Then, the strut support 12
A vehicle body-side mounting portion 22 for mounting to the vehicle body 10 and a tower bar mounting portion 26 for mounting the tower bar 24 are provided, and the vehicle body-side mounting portion 22 and the tower bar mounting portion 26 are provided at different positions.

More specifically, the strut support 12
As shown in FIGS. 3 and 4, a cylindrical portion 12 formed in a deep cylindrical shape and having one opening portion side narrowed to a small diameter.
A, a flange portion 12B formed on the other opening portion side of the cylindrical portion 12A, a rubber bush 12C mounted on one opening portion side of the cylindrical portion 12A, and a cylindrical inner 12D held in the rubber bush 12C. And a stud bolt 28 is provided on the vehicle body side mounting portion 22 to form a tower bar mounting portion 26 on one opening side of the cylindrical portion 12A. At the same time, the female screw 30
Is formed.

When attaching the strut 2 to the vehicle body 10, the strut support 12 has the flange portion 12B and the mount stay 16 at substantially the same height with respect to the opening 32 provided in the side apron 20 on the vehicle body 10 side. Attach in position.

That is, the height of the opening 18 at the upper end of the mount stay 16 is formed at substantially the same height as the height of the side apron 20.
6 Opening 18 at upper end and opening 3 in side apron 20
2 through the cylindrical portion 12A of the strut support 12 from the lower side to the upper engine room 34, and then a flange portion 12B is formed around the opening 18 at the upper end of the mount stay 16.
The side apron 20
The height positions of the opening 32, the flange 12B, and the opening 18 at the upper end of the mount stay 16 are substantially the same.

Reference numeral S denotes a minute gap formed between the opening 32 provided in the side apron 20 and the upper end of the mount stay 16.

Next, the operation of this embodiment will be described.

When the strut 2 is mounted on the vehicle body 10 side, the tip end of the damper rod 2-2 of the strut 2 is engaged by the inner 12D of the strut support 12, and the opening 18 at the upper end of the mount stay 16 and the side apron The cylindrical portion 12A of the strut support 12 is passed through the opening 32 of the strut support 12 from the lower side to the upper engine room 34.

Then, the flange 12B is fixed to the periphery of the opening 18 at the upper end of the mount stay 16 with the stud bolt 28 while being in contact therewith, and the opening 32 and the flange 12B provided in the side apron 20 and the mount stay 16 are fixed. The height position of the opening 18 at the upper end is substantially the same.

At this time, the gap S between the opening 32 provided in the side apron 20 and the upper end of the mount stay 16 is very small.

Thus, the strut support 12
In addition, by providing the vehicle body side mounting portion 22 and the tower bar mounting portion 26 at different positions, it is possible to reduce the looseness and the strength load, increase the safety factor of the fastening portion, and facilitate the management, It is practically advantageous.

Further, the strut support 12 is formed in a deep cylindrical shape and one opening portion side is narrowed down to a small diameter, and a flange portion formed on the other opening portion side of the cylindrical portion 12A. 12B, a rubber bushing 12C mounted on one opening side of the cylindrical portion 12A, and a cylindrical inner 12D held in the rubber bushing 12C, and a vehicle body side mounting portion 22 is formed on the flange portion 12B. In addition, since the tower bar mounting portion 26 is formed on one side of the opening portion of the cylindrical portion 12A, the vehicle body side mounting portion 22 having a different height position and a different mounting position.
And the tower bar mounting portion 26 can be formed on the strut support 12, eliminating the need for a conventional spacer, reducing the number of parts, simplifying the configuration, reducing the cost, and being economically advantageous. At the same time, the mounting workability can be improved, which is practically advantageous. Further, the bending force from the tower bar 24 does not act on the stud bolt 28 of the strut support 12, so that the degree of freedom in designing the stud bolt 28 can be increased. Thus, the safety of the fastening portion can be improved, and the management becomes easy.

Further, when the strut 2 is mounted on the vehicle body 10, the flange portion 12B of the strut support 12 and the mount stay 16 are substantially flush with the opening 32 provided in the side apron 20 on the vehicle body 10 side. The height H of the mount stay 16 is made smaller than the conventional height H1 by mounting the
Can be reduced in size, a significant cost reduction can be achieved, it is economically advantageous, and the gap S between the opening 32 provided in the side apron 20 and the upper end of the mount stay 16 is made small. It is possible to reliably prevent muddy water from entering the engine room 34 without providing a cover as in the related art, and the cover is unnecessary, the number of parts is reduced, and the cost can be reduced. It is economically advantageous.

[0037]

As described above in detail, according to the present invention, in the strut mounting structure for mounting the strut by the strut support, the strut having the vehicle body side mounting portion to be mounted on the vehicle body and the tower bar mounting portion for mounting the tower bar. In addition to providing the support, the strut support body mounting portion and the tower bar mounting portion are provided at different positions, so that looseness and strength burden can be reduced, and the safety factor of the fastening part can be increased. It is easy to manage and practically advantageous.

Further, the strut support is formed of a cylindrical portion formed into a deep cylindrical shape and having one opening portion narrowed to a small diameter, and a flange portion formed on the other opening portion side of the cylindrical portion. In addition, when the vehicle body-side mounting portion is formed on the flange portion and the tower bar mounting portion is formed on one of the opening portions of the cylindrical portion, the vehicle body-side mounting portion and the tower bar having different height positions and mounting locations are provided. The mounting part can be formed on the strut support, eliminating the need for the conventional spacer, reducing the number of parts, simplifying the configuration, reducing the cost, and being economically advantageous. It is practically advantageous, and the bending force from the tower bar does not act on the stud bolt of the strut support, and the design flexibility of the stud bolt can be increased. With, it can improve the safety of the fastening site.

Further, when the strut is mounted on the vehicle body, if the flange portion of the strut support and the mount stay are mounted at substantially the same height position with respect to the opening provided in the side apron on the vehicle body side, the mount stay can be reduced in size. The cost can be reduced significantly, which is economically advantageous, and the gap between the opening provided in the side apron and the upper end of the mount stay can be made very small. Even without providing such a cover, the intrusion of muddy water into the engine room can be reliably prevented, the cover is unnecessary, the number of parts is reduced, and the cost can be reduced, which is economically advantageous. .

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a front-side suspension showing an embodiment of the present invention.

FIG. 2 is a schematic perspective view illustrating a mounting state of a strut support, a mount stay, and a tower bar.

FIG. 3 is a plan view of a strut support.

FIG. 4 is a sectional view taken along line 〓V-〓V of FIG. 3;

FIG. 5 is a schematic sectional view of a front-side suspension showing a conventional technique of the present invention.

FIG. 6 is a schematic plan view of a front suspension.

FIG. 7 is a schematic perspective view showing a mounting state of struts.

FIG. 8 is a perspective view showing a state where a mount stay is mounted on a chassis frame.

FIG. 9 is a perspective view of a state before a mount stay is mounted on a chassis frame.

FIG. 10 is a schematic assembly perspective view of a front body portion of the vehicle.

FIG. 11 is a perspective view of a state before a tower bar is mounted on a mount stay of a chassis frame.

FIG. 12 is a schematic perspective view illustrating a mounting state of a strut support, a mount stay, a spacer, and a tower bar.

FIG. 13 is a plan view of a strut support.

FIG. 14 is a sectional view taken along the line X〓V-X〓V in FIG. 13;

[Explanation of symbols]

 2 Strut 4 Suspension 6 Knuckle 8 Bolt 10 Body 12 Strut support 12A Tubular part 12B Flange part 12C Rubber bush 12D Inner 14 Chassis frame 16 Mount stay 18 Opening 20 Side apron 22 Car body side mounting part 24 Tower bar 26 Tower bar mounting part 28 Stud Bolt 30 Female thread 32 Opening 34 Engine room

Claims (3)

[Claims] 1. A strut mounting structure for mounting a strut by a strut support, the strut support having a vehicle body-side mounting portion for mounting on a vehicle body side and a tower bar mounting portion for mounting a tower bar, and the strut support being mounted on the vehicle body. The strut mounting structure, wherein the strut and the tower bar mounting portion are provided at different positions. 2. The strut support according to claim 1, wherein said strut support comprises a cylindrical portion formed in a deep cylindrical shape and having one opening portion side narrowed to a small diameter, and a flange portion formed on said other opening portion side of said cylindrical portion. The strut mounting structure according to claim 1, wherein a vehicle body side mounting portion is formed on the flange portion, and a tower bar mounting portion is formed on one of the opening portions of the cylindrical portion. 3. The strut support according to claim 1, wherein when the strut is attached to the vehicle body, the flange portion and the mount stay are mounted at substantially the same height position with respect to the opening provided in the side apron on the vehicle body side. Strut mounting structure described in 1.