JPH09210113A - Bracket for installing suspension - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure mechanical stiffness by forming a locking piece on a part in continuity to a supporting main body and a mounted part by stamping and bending work. SOLUTION: An installing bracket 10 made of a thin steel plate and formed in a curvature shape, is provided with a supporting main body 12 having an opening end 12a pressed-in the lower part of an outer cylindrical part 16a in a shock absorber and for supporting the lower part of the outer cylindrical part 16a, and a mounted part 14 which consists of a pair of flat parts 14A, 14B expanded in continuity to the side of the supporting main body part 12 and arranged opposing to each other. Locking pieces 20A, 22A which abut on the outer cylindrical part 16a of the shock absorber 16 in a vertical direction of a rib part 18A, are formed on a part of the outer peripheral part of the supporting main body part 12 and the outer peripheral part of the mounted part 14, by bending inward at a specified angle in the relation to an outer peripheral surface. Locking pieces 20B, 22B are formed to abut on the outer cylindrical part 16a of the shock absorber 16 in a vertical direction of a rib 16B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension mounting bracket for supporting the other end of a strut constituting a suspension mounted on a vehicle body of a vehicle and fixing the suspension to a lower portion of the vehicle body.

[0002]

2. Description of the Related Art A strut type suspension mounted on a vehicle body of a vehicle has one end connected to a suspension tower portion (strut housing portion) of the vehicle body through a mount member and a coil spring, and the other end connected through a mounting bracket. And a shock absorber as a strut attached to the wheel supporting member. The shock absorber has a lower end fixed to a wheel support member that supports a wheel through a mounting bracket, and a straight line connecting the contact point with the road surface of the wheel and the center point of the mount member and the central axis of the shock absorber. And are arranged so as to form a predetermined included angle at the center point of the mount member, and support the vehicle body from below. As a result, when a force that acts on the wheel from the road surface is applied to the shock absorber via the wheel and the wheel support member, a bending moment inward along the vehicle width direction of the vehicle body acts on the shock absorber. Further, when the vehicle turns, a bending moment, which is directed outwards along the vehicle width direction of the vehicle body, acts on the shock absorber due to the centrifugal force acting on the vehicle body.

The mounting bracket for supporting the lower end portion of the shock absorber to which such a bending moment is applied is integrally made of a thin steel plate by bending.
As disclosed in Japanese Utility Model Unexamined Publication No. 1-120404, an engaged end portion is provided along a circumferential direction at a lower end portion of an outer tubular portion of the shock absorber, and an outer end of the shock absorber is provided. A tubular support body portion into which the lower end portion of the cylinder portion is press-fitted, and a mounted portion having a pair of flat portions formed in series on the side portions of the support body portion and arranged to face each other with a predetermined gap therebetween. It is configured to include. Two mounting holes, into which mounting bolts are inserted, are provided in each flat portion of the mounted portion vertically along the axis of the shock absorber at a predetermined interval on each common axis of the flat portion of the mounted portion. ing. Protrusion-shaped engaging portions that engage with the engaged portion of the outer cylinder portion are provided in the vicinity of the respective boundary portions between the support main body portion and the mounted portion so as to face each other and project inward.
The protrusion-shaped engaging portion is provided at one location at a substantially central position between the two mounting holes provided in each flat portion of the mounted portion.

[0004]

As described above, the projection-like engaging portion of the mounting bracket is provided at one place in the vicinity of each boundary between the supporting main body portion and the mounted portion, and the lower end portion of the shock absorber is attached to the mounting bracket. When supported by
For example, when the vehicle is in a turning state, the reaction force concentrates on the projecting engagement portion due to the bending moment toward the outside of the vehicle body on the shock absorber. It is required to make a large protrusion. In order to make the engaging portion project relatively large, a steel plate thinner than a thick steel plate is preferable from the viewpoint of bending, but a thick steel plate is required from the viewpoint of mechanical strength of the mounting bracket itself. . Therefore, it becomes difficult to project the engaging portion relatively large, and the supporting rigidity of the engaging portion may not be improved.

In view of the above problems, the present invention relates to a suspension mounting bracket for supporting the other end of a strut constituting a suspension mounted on a vehicle body of a vehicle and fixing it to a lower portion of the vehicle body. An object of the present invention is to provide a suspension mounting bracket that can secure the mechanical rigidity of the mounting bracket itself and can improve the support rigidity of the engaging portion when the bracket is formed by bending the plate member. And

[0006]

In order to achieve the above-mentioned object, a suspension mounting bracket according to the present invention comprises:
A support main body that is formed by bending a plate member and that fixes the other end of an expandable strut whose one end is connected to the vehicle body, and a support main body that is formed in series with the support main body and moves relative to the vehicle body. And a fitting piece having an attachment portion fixed to the wheel support member, and a locking piece formed in a portion connected to the support body and the fitting portion by punching and bending and abutting against the other end of the strut. To be done.

Further, the locking piece is formed by punching and bending a portion connected to the support body and the mounted portion along the axis of the other end of the strut, and the corner portion at the tip end of the locking piece of the strut. The locking piece may be in contact with the outer peripheral surface of the other end, or the locking piece is formed by punching and bending the part connected to the support main body and the mounted part along the axis of the other end of the strut, The end surface of the tip of the piece may abut the outer peripheral surface of the other end of the strut.

The locking piece is formed by punching and bending a portion connected to the support body and the mounted portion in a direction substantially orthogonal to the axis of the other end of the strut, and the end surface of the locking piece is the other end of the strut. It may be in contact with the outer peripheral surface of.

The locking piece may have a cross-sectional shape provided with a convex portion.

Further, the relative position of the locking piece with respect to the mounting portion may be closer to the upper end of the supporting main body than the position of the mounting portion.

[0011]

FIG. 3 shows a first embodiment of a mounting bracket for a suspension according to the present invention, together with a part of the vehicle body of a vehicle equipped with the same.

FIG. 3 shows a schematic structure of the front left wheel side of the front suspension, which is arranged in front of the vehicle body (not shown). Since the right front wheel side of the front suspension has the same configuration as the left front wheel side, only the schematic configuration of the left front wheel side of the front suspension will be described, and the description of the right front wheel side of the front suspension will be omitted.

The shock absorber 16 in the front suspension has a rod portion 16b (not shown) which expands and contracts in the vertical direction of the vehicle body, and forms the suspension tower portion of the vehicle body and the lower portion of the vehicle body to connect the left and right front suspensions. And a wheel support member 24 connected to one end of the front suspension member.

A coil spring receiving portion 22 is fixed to an upper portion of a damper cylinder portion (hereinafter referred to as an outer cylinder portion) 16a of the shock absorber 16 while being inclined at a predetermined angle with respect to an axial direction of the rod portion 16b. There is. Further, a coil spring 18 is provided between the coil spring receiving portion 20 and the coil spring receiving portion 22 provided at the tip end portion of the rod portion 16b with its lower end center being eccentric to the outside of the vehicle body.

The outer cylinder portion 1 of the shock absorber 16
The lower part of 6a is a wheel support member 2 that supports the left front wheel FLW.
It is supported by a mounting bracket 10 which is fixed to 4.

As shown in FIGS. 3 and 4, the mounting bracket 10 is made of a thin steel plate in a curved shape and has an open end 12a into which the lower portion of the outer cylindrical portion 16a of the shock absorber 16 is press-fitted. It is configured to include a support main body 12 that supports a lower portion of the outer tubular portion 16a, and a mounted portion 14 that is formed by a pair of flat portions 14A and 14B that are arranged side by side on the side of the support main body 12 so as to spread and face each other. ing.

The flat portions 14A and 14B of the mounted portion 14 are provided with mounting holes 24a at positions corresponding to the two mounting holes 24a provided in the wheel support member 24, respectively.
A pair of mounting holes 14a in which the bolt B1 is inserted with the bolt B1 interposed therebetween,
And 14b are provided. Two mounting holes 14a and 14b are provided in each of the flat portions 14A and 14B at a predetermined interval along the axis of the outer tubular portion 16a. Each bolt B1 has a mounting hole 14a, and
The nut N1 is fastened to the wheel supporting member 14 through the mounting hole 24a.

The support body 12 has flanges 12f formed at the upper and lower ends along the axial direction of the outer cylinder 16a of the shock absorber 16, and has a cutout at the approximate center of the curved portion to reduce the weight of the parts. 12h is provided.

Further, the outer peripheral portion of the support main body 12 and
As shown in FIG. 2, FIG. 3, and FIG. 4, a flat portion 14 of the mounted portion 14 is provided on a part of the outer peripheral portion of the mounted portion 14.
Rib portions 18A protruding outward in a substantially trapezoidal shape are formed as reinforcing portions at positions corresponding to the mounting holes 14a in A. On the other hand, the mounted portion 1 is also attached to the outer peripheral portions of the support main body portion 12 and the mounted portion 14 facing the rib portion 18A.
Rib portions 18B protruding outward in a substantially trapezoidal shape are formed as reinforcing portions at positions corresponding to the mounting holes 14b in the four flat portions 14B.

As a result, the second moment of area of the mounting bracket 10 with respect to the coordinate axis along the vehicle width direction of the vehicle body becomes larger than the conventional one without increasing the plate thickness, so that the longitudinal direction of the vehicle body acting on the shock absorber 16 is increased. The bending rigidity is improved with respect to the bending moment.

Further, as shown in FIGS. 1, 3 and 4, the outer peripheral portion of the support main body 12 and a part of the outer peripheral portion of the mounted portion 14 are arranged above and below the rib portion 18A. The outer cylindrical portion 16a of the shock absorber 16
There are formed locking pieces 20A and 22A that come into contact with. Also with respect to the rib portion 18B, the locking pieces 20 that come into contact with the outer cylindrical portion 16a of the shock absorber 16 in the vertical direction, respectively.
B and 22B are formed. Since the locking pieces 20A and 22A and the locking pieces 20B and 22B have the same structure, respectively, the locking pieces 20B and 22B will be described, and the description of the other locking pieces will be omitted.

The locking piece 20B is formed, for example, by being punched and bent to be continuous with the flat portion 14B and bent inward at a predetermined angle with respect to the outer peripheral surface. This allows
A bent portion is formed along the axial direction of the shock absorber 16 and a substantially quadrangular opening 12b is formed in a part of a boundary portion between the support body portion 12 and the mounted portion 14. Corner 20b at the tip of the locking piece 20B
Extends in a vehicle width direction of the vehicle body substantially parallel to the flat portion 14B and is in contact with a portion of the side surface of the outer tubular portion 16a that faces the bolt B1. Further, the locking piece 20B has two mounting holes 14
It is provided at a position higher than the position of b provided near the upper end. On the other hand, the locking piece 22B is
It is provided at a position directly below the locking piece 20B with a predetermined interval with the rib portion 18B sandwiched between and adjacent to the position of one of the two mounting holes 14b provided near the lower end. Further, the lower end surface of the outer tubular portion 16a and the inner peripheral surface of the support body portion 12 are welded to each other by welding to form the fusion portion 12w.
Are formed over the entire inner circumference.

Under the above circumstances, when the vehicle is in a turning state, for example, the bending in which the shock absorber 16 is bent toward the outside of the vehicle body in the direction indicated by the arrow F, that is, the shock absorber 16 along the vehicle width direction. Moment is shock absorber 1
6, the lower end portion of the shock absorber 16 has the locking pieces 20B and 22B and the locking pieces 20A and 22A.
Will be supported by. Therefore, when the lower end portion of the shock absorber 16 is supported by the locking pieces 20B and 22B and the locking pieces 20A and 22A, each reaction force that acts is smaller than that in the case of being supported at one place, and the plate thickness is reduced. Can be reliably supported without increasing the thickness. Moreover, the locking pieces 20A and 22A, 20B and 22B
Since it is formed by punching and bending, the tip of the locking piece can be brought into contact at a position closer to the virtual axis Lc passing through the central axis of the outer cylindrical portion 16a, and the support becomes more reliable. Further, since the locking pieces 20A and 20B are provided at a position higher than the position of the two mounting holes 14b provided near the upper end, the load acting on the locking pieces 20A and 20B is allowed. It is possible to increase the load.

FIGS. 5, 6 and 7 show a second embodiment of a suspension mounting bracket according to the present invention. 5, 6 and 7, in the example shown in FIGS. 3 and 4, the corners 20b at the tips of the locking pieces 20A and 20B are in contact with the surface of the outer tubular portion 16a. Instead, locking pieces 20A 'and 20B'
The entire end surface at the tip of the abuts on the outer cylindrical portion 16a. Further, the tips of the locking pieces 22A 'and 22B' also come into contact with the surface of the outer cylindrical portion 16a. In addition, in the example shown in FIGS. 5, 6, and 7, and the example described later, the same components in the example shown in FIGS. 3 and 4 are denoted by the same reference numerals. The duplicated description will be omitted.

Thus, the locking pieces 20A 'and 20B' are
Since the entire end surface at the tip of the abutment contacts the surface of the outer cylindrical portion 16a, when the bending moment toward the outside of the vehicle body acts on the shock absorber 16, the tips of the locking pieces 20A 'and 20B' are deformed in a direction away from each other. Will be suppressed.

FIG. 8, FIG. 9 and FIG. 10 show a third embodiment of a suspension mounting bracket according to the present invention. 8, 9 and 10, in the example shown in FIGS. 3 and 4, the locking pieces 20A and 20B have a part of the outer peripheral portion of the support body 12 bent along the axial direction of the shock absorber 16. Although it is provided by punching so as to form a portion, instead of this, the locking pieces 26B and 26A and the locking pieces 28B and 28A are provided.
A part of the outer peripheral part of the is punched out so that a bent part is formed along the direction orthogonal to the axial direction of the shock absorber 16.

Locking pieces 26B and 26A, locking piece 28B
And 28A have the same shape, the locking pieces 26B and 26A will be described, and the description of the other locking pieces will be omitted.

The locking pieces 26B and 26A are formed in a tongue shape and have curved contact portions 26b and 26a which contact the outer cylindrical portion 16a of the shock absorber 16 along the surface thereof. As a result, openings 12c having convex portions corresponding to the shapes of the contact portions 26b and 26a are formed in a part of the outer peripheral portion of the support body portion 12, respectively. As a result, the contact portions 26b and 26a of the locking pieces 26B and 26A are
The concentration of the stress acting on is reduced.

FIG. 11, FIG. 12, and FIG. 13 (A),
(B) shows a fourth embodiment of the suspension mounting bracket of the suspension according to the present invention. 11, FIG. 12, and FIGS. 13A and 13B, the locking piece 20 connected to the flat portions 14A and 14B in the example shown in FIGS. 3 and 4.
The tips of A and 20B are formed so as to come into contact with the outer cylindrical portion 16a of the shock absorber 16, but instead, a locking piece 30A that is continuous with the curved portion of the support body 12
Part of the inner peripheral surface of each of 30B, 32A and 32B abuts on the outer cylindrical portion 16a of the shock absorber 16. Since the locking pieces 30A and 30B and the locking pieces 32A and 32B have the same structure, the locking piece 30
B and 30A will be described, and description of the other locking pieces will be omitted.

One end of each of the locking pieces 30B and 30A is continuous with the curved portion of the support body 12, and the inner peripheral surface of the other end is in contact with the surface of the shock absorber 16 along the outer cylindrical portion 16a. . The sectional shapes of the other ends of the locking pieces 30B and 30A are enlarged as shown in FIG. 13 (B) and are seen from the directions of the arrows Ya and Yb, as shown in FIG. Are formed. As a result, the opening 12d is formed in the flat portions 14B and 14A. In addition, since the convex portion 34 is formed on the other end portions of the locking pieces 30B and 30A, the bending rigidity of the other end portions of the locking pieces 30B and 30A is greater than that when the convex portion 34 is not provided. Become.

[0031]

As is clear from the above description, according to the suspension mounting bracket of the present invention, the locking piece is formed by punching and bending at the portion connected to the supporting body and the mounted portion, and Since it abuts on the other end, the tip of the locking piece is more surely brought into contact with the other end of the strut, and the other end of the strut is reliably supported by the locking piece. Therefore, the mechanical rigidity of the mounting bracket itself can be ensured, and the supporting rigidity of the engaging portion can be improved.

Further, when the end surface of the tip of the locking piece abuts, the pressure acting on the end surface is larger than the pressure acting on the corner of the tip of the locking piece due to the increase of the contact area. It is reduced and the other end of the strut can be supported more safely and securely.

The engaging piece is formed by punching and bending a part connected to the support body and the mounted part in a direction substantially orthogonal to the axis of the other end of the strut, and the end surface of the engaging piece is the other end of the strut. When it comes into contact with the outer peripheral surface of, the strength against the pressure applied to the locking piece in the direction substantially orthogonal to the axis of the other end of the strut can be improved.

When the locking piece has a cross-sectional shape provided with a convex portion, the rigidity of the locking piece itself is enhanced.

Further, when the relative position of the locking piece with respect to the mounting portion is closer to the upper end of the support body than the position of the mounting portion, the locking piece is caused by the bending moment acting on the other end of the strut. This has the advantage that the allowable load of the load acting on the can be increased.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a main part of a first embodiment of a mounting bracket for a suspension according to the present invention.

FIG. 2 is a partial cross-sectional view showing a main part of the first embodiment of the mounting bracket for the suspension according to the present invention.

FIG. 3 is a front view showing an example of a mounting bracket for a suspension according to the present invention, together with a part of a vehicle body to which the suspension mounting bracket is applied.

FIG. 4 is a side view showing a main part of the first embodiment shown in FIG.

FIG. 5 is a front view showing an essential part of a second embodiment of a mounting bracket for a suspension according to the present invention.

FIG. 6 is a side view showing a main part of the second embodiment shown in FIG.

FIG. 7 is a partial cross-sectional view taken along the line VII-VII in the main part of the second embodiment shown in FIG.

FIG. 8 is a front view showing a main part of a third embodiment of a mounting bracket for a suspension according to the present invention.

9 is a side view showing a main part of the third embodiment shown in FIG. 8. FIG.

FIG. 10 is a partial cross-sectional view taken along line XX in the main part of the third embodiment shown in FIG.

FIG. 11 is a front view showing a main part of a fourth embodiment of a mounting bracket for a suspension according to the present invention.

FIG. 12 is a side view showing a main part of the fourth embodiment shown in FIG.

13 is a view taken along line XIII-XIII in the main part of the fourth embodiment shown in FIG. 11, where (A) is a partial cross-sectional view and (B) is an enlarged view in the direction of an arrow. .

[Explanation of symbols]

10 Mounting Bracket 12 Supporting Body Part 14 Attached Part 14A, 14B Flat Part 16 Shock Absorber (Strut) 18A, 18B Rib Part 20A, 20B, 22A, 22B, 20A ', 20
B ', 22A', 22B 'locking piece 26A, 26B, 28A, 28B, 30A, 30B locking piece 24 wheel support member 34 convex portion

Claims (6)

[Claims] 1. A vehicle body, which is formed by bending a plate-like member and which fixes the other end of an expandable strut whose one end is connected to the vehicle body, and which is formed continuously from the vehicle body. The mounted portion having a mounting portion fixed to the wheel supporting member that moves relative to the supporting main body portion and the mounted portion formed by punching and bending, and abutted on the other end of the strut. A suspension mounting bracket that is configured to include a locking piece that contacts. 2. The engaging piece is formed by punching and bending a part of the engaging piece connected to the supporting body and the attached part along the axis of the other end of the strut, and a corner at the tip of the engaging piece. The suspension mounting bracket according to claim 1, wherein the portion abuts on an outer peripheral surface of the other end of the strut. 3. The locking piece is formed by punching and bending a portion of the locking piece that is continuous with the support body and the mounted portion along the axis of the other end of the strut, and the end surface of the locking piece at the tip end portion. The mounting bracket for a suspension according to claim 1, wherein the abutment contacts the outer peripheral surface of the other end of the strut. 4. The locking piece is formed by punching and bending a portion of the locking piece that is continuous with the support body and the mounted portion in a direction substantially orthogonal to the axis of the other end of the strut, and the end surface of the locking piece. The mounting bracket for a suspension according to claim 1, wherein the strut abuts an outer peripheral surface of the other end of the strut. 5. The suspension mounting bracket according to claim 1, wherein the locking piece has a cross-sectional shape in which a convex portion is provided. 6. The relative position of the locking piece to the mounting portion is closer to the upper end of the support body than the position of the mounting portion. Four
Alternatively, a mounting bracket for one of the suspensions described in 5.