JPH0989035A - Mounting bracket for hydraulic shock absorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain sufficient regidity and strength relating to an input in a longitudinal/lateral direction of a vehicle. SOLUTION: In a mounting bracket 2 for a hydraulic shock absorber 1 constituted by bending a plate member in almost U shape, forming a bending part 3 extended in an axial direction and a linear part 4 at both ends in circumferential direction of the bending part 3 and fixedly inserting a lower end part 1a of the hydraulic shock absorber 1 to the inside of the bending part 3, a protruded part 7 to the outward is provided at almost central position in an axial direction of the mounting bracket 2 in a part making a transfer from the bending part 3 to the linear part 4. Protrusions 8, 9 into contact with a lower end part of the hydraulic shock absorber 1 are provided on both side positions in the axial direction of the mounting bracket 2 by interposing the protruded part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting bracket for a hydraulic shock absorber applied to a vehicle suspension device or the like.

[0002]

2. Description of the Related Art In a strut type suspension device using a hydraulic shock absorber as a support for positioning a wheel, a piston rod of the hydraulic shock absorber is attached to a vehicle body side via an insulator, A mounting bracket fixed to the lower end is connected to the knuckle spindle or axle housing.

In a conventional mounting bracket for a hydraulic shock absorber, for example, as shown in Japanese Utility Model Laid-Open No. 1-120404, a plate member is bent into a substantially U shape, and a bending portion extending in the axial direction and this bending are formed. A straight portion is formed at an end portion in the circumferential direction of the portion, and the lower end portion of the hydraulic shock absorber is inserted inside the curved portion so as to be fixed to the lower end portion of the hydraulic shock absorber. In addition, the body of the hydraulic shock absorber is provided with a recess in the front-back direction of the vehicle,
The mounting bracket is provided with an inward projection that fits into the recess, and the mounting bracket is firmly fixed to the hydraulic shock absorber. The inward protrusion is formed at a portion of the mounting bracket that is shifted from the U-shaped curved portion to the straight portion at a substantially central position in the axial direction of the mounting bracket.

This mounting bracket is arranged so that the straight line portion connected to the U-shaped curved portion faces the left-right direction of the vehicle.
This straight portion forms a mounting surface and is connected to, for example, a knuckle spindle.

When the piston rod of the hydraulic shock absorber is mounted on the vehicle body side, and the mounting bracket fixed to the lower end of the hydraulic shock absorber is connected to the knuckle spindle, the hydraulic shock absorber functions as a suspension device. The mounting bracket supports the force in the front-rear direction and the left-right direction of the vehicle, which is input from the piston rod side, with the mounting portion of the mounting bracket to the vehicle as a fixed end.

[0006]

However, in the above-mentioned conventional example, the rigidity of the mounting bracket when a force in the longitudinal direction of the vehicle acts, especially the mounting portion of the hydraulic shock absorber and the mounting portion of the knuckle spindle. There is no consideration in regard to the rigidity between and, that is, the rigidity at the portion where the U-shaped curved portion of the mounting bracket transitions to the straight portion. Further, of the inputs in the left-right direction of the vehicle, with respect to the force in the outer ring side of the vehicle, the projections that contribute to support this force are provided only in the axially substantially central portion of the mounting bracket. Therefore, sufficient strength may not be obtained.

The present invention has been devised in view of the above-mentioned conventional circumstances, and an object thereof is to provide a mounting bracket capable of supporting with sufficient rigidity and strength with respect to inputs in the front-rear direction and left-right direction of a vehicle. And

[0008]

Therefore, according to the present invention, a plate member is bent into a substantially U shape to form a curved portion extending in the axial direction and straight portions at both circumferential ends of the curved portion. In the mounting bracket of the hydraulic shock absorber in which the lower end portion of the hydraulic shock absorber is inserted and fixed inside, the axial direction of the mounting bracket in the portion transitioning from the curved portion to the straight portion is substantially outward. Is provided, and projections contacting the lower end of the hydraulic shock absorber are provided at both axial positions of the mounting bracket with the projection being sandwiched therebetween.

Here, in the mounting bracket of the present invention, a substantially rectangular plate member is bent into a substantially U shape as a whole, and the lower end portion of the hydraulic shock absorber is inserted and fixed inside the bent curved portion. There is. An attachment surface and an attachment hole are formed in the straight portion connected to the curved portion bent in a U shape. Thus, the knuckle spindle is mounted by the bolts inserted through the mounting holes. In this case, the straight portion is arranged so as to face the left-right direction of the vehicle.

An outwardly projecting portion provided at a substantially central position in the axial direction of the mounting bracket at a portion where the curved portion transitions to a straight portion bulges outward from the inside of the U-shape, preferably It is press-formed before the plate member is bent into a substantially U shape.

The protrusions provided on both sides of the protrusion and in contact with the lower end of the hydraulic shock absorber increase the contact area of the mounting bracket with the body of the hydraulic shock absorber. Further, this protrusion is press-molded in the same manner as the protrusion.

In the hydraulic shock absorber provided with the mounting bracket, the piston rod is mounted on the vehicle body side, the mounting bracket is mounted on the unsprung side, functions as a vehicle suspension device, and controls vibration. In this case, the mounting bracket supports the forces in the front-rear direction and the left-right direction of the vehicle, which are input from the piston rod side, with the mounting portion of the mounting bracket to the vehicle as a fixed end.

Here, with respect to the longitudinal force of the vehicle,
By providing the outwardly projecting portion at the portion where the curved portion of the mounting bracket transitions to the straight portion, the rigidity of the mounting bracket is increased and the support strength is increased. In addition, with respect to the lateral force of the vehicle, the projections provided on both sides in the axial direction of the mounting bracket sandwiching the projecting portion increase the contact area with the body portion of the hydraulic shock absorber on the outer wheel side of the vehicle. Since the outer periphery of the hydraulic shock absorber is firmly supported and the protrusions (supporting points) are provided on both sides in the axial direction of the mounting bracket across the protrusion, one protrusion is the piston rod. As a result, the bending moment input from the piston rod is reduced, and the strength can be improved.

When the mounting bracket is welded and fixed to the hydraulic shock absorber at the lower end of the hydraulic shock absorber, the projection increases the contact area between the hydraulic shock absorber and the mounting bracket. As a result, it is possible to weld over the range from the protrusion on one straight portion side to the protrusion on the other straight portion side through the curved portion, and it is possible to secure a longer welding length, so a firm fixing is possible. Becomes

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment in which the present invention is applied to a mounting bracket of a hydraulic shock absorber applied to a strut type suspension device will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a mounting bracket of a hydraulic shock absorber showing an embodiment of the present invention. In the figure, 1 is a hydraulic shock absorber, 2 is a mounting bracket, and this mounting bracket 2 is formed by bending a substantially rectangular plate member into a substantially U shape as a whole, and a bending portion 3 extending in the axial direction and this bending. A straight portion 4 is formed at the circumferential end of the portion 3, and the lower end portion 1a of the hydraulic shock absorber 1 is inserted and fixed inside the curved portion 3 (FIG. 2).
reference). The mounting bracket 2 is welded W to the lower end 1a of the hydraulic shock absorber 1 at its lower end in the axial direction.

A mounting surface 5 and a mounting hole 6 are formed in each of the straight portions 4. Also, the two mounting surfaces 5
The interval K1 is smaller than the inner diameter of the curved portion 3 (see FIG. 5).

An outwardly projecting portion 7 is formed at a substantially central position in the axial direction of the mounting bracket 2 at a portion where the curved portion 3 transitions to the straight portion 4. The protrusion 7 bulges outward from the inside of the U-shaped mounting bracket 2, extends in the tangential direction of the bending portion 3, and connects the bending portion 3 and the straight portion 4 (FIG. 3). reference).

Protrusions 8 and 9 contacting the lower end 1a of the hydraulic shock absorber 1 are provided at both sides of the projecting portion 7 in the axial direction of the mounting bracket 2. These protrusions 8,
Reference numeral 9 is substantially opposite to the protruding portion 7 and bulges from the outer circumference of the U-shaped mounting bracket 2 toward the inner circumference. They are arranged at intervals. Further, in FIG. 1, the protrusion 8 located on the upper side in the axial direction of the mounting bracket 2 is larger than the protrusion 9 also located on the lower side, that is, the contact area of the hydraulic shock absorber 1 with the body portion is increased in the circumferential direction. Secure this protrusion 8
Is formed so that the interval K2 of the.

The projecting portion 7 and the projections 8 and 9 are all inserted into the mounting holes 6 of the mounting surface 5, and the bearing surface 1 of the mounting bolt (not shown) is shown.
It is formed in a range where it does not come into contact with 0, and the area of the mounting surface 5 is sufficiently secured.

Numeral 11 is a flange formed by bending both ends of the mounting bracket 2 in the axial direction, and numeral 12 is a notch formed in a part of the curved portion 3.

In such a structure, the hydraulic shock absorber 1 has a piston rod (not shown) mounted on the vehicle body side, and a mounting bracket 2 fixed to the lower end portion of the hydraulic shock absorber 1 is shown on the unsprung side. It is connected to the knuckle spindle. Specifically, the straight portion 4 of the mounting bracket 2 is arranged so as to face the left-right direction of the vehicle, and the mounting portion of the knuckle spindle is sandwiched between the mounting surfaces 5 formed on the straight portion 4 and inserted into the mounting hole 6. Connected by mounting bolts (not shown).

When the hydraulic shock absorber 1 functions as a suspension device, the mounting bracket 2 is mounted on the vehicle body side with the mounting portion of the mounting bracket 2 to the unsprung portion (knuckle spindle) of the vehicle as a fixed end. It supports forces in the front-rear direction and the left-right direction of the vehicle, which are input from the piston rod side (not shown).

At this time, with respect to the force in the front-rear direction of the vehicle, the rigidity of the mounting bracket 2 is increased by the outward protruding portion 7 provided at the portion of the mounting bracket 2 where the curved portion 3 transitions to the straight portion 4. Is increased and the support strength is increased.

On the other hand, with respect to the lateral force of the vehicle, the projections 8 and 9 provided on both sides in the axial direction of the mounting bracket 2 with the projecting portion 7 interposed therebetween are provided with the hydraulic shock absorber 1 on the outer wheel side of the vehicle. The contact area with the body portion of the hydraulic shock absorber 1 is increased, and the outer circumference of the hydraulic shock absorber 1 is firmly supported. Also, this protrusion 8,
Since the protrusions 9 are provided on both sides of the mounting bracket 2 in the axial direction with the projecting portion 7 interposed therebetween, one protrusion (an axially upper protrusion) 8 approaches the piston rod side (not shown).
As a result, the bending moment input from the piston rod is reduced, and the strength can be improved.

The projection 9 on the lower side of the mounting bracket 2 in the axial direction lengthens the contact area with the body portion of the hydraulic shock absorber 1 at the lower end of the mounting bracket 2 in the axial direction in the circumferential direction. As a result, the mounting bracket 2 is attached to the hydraulic shock absorber 1.
Since it is possible to secure a longer welding length at the time of welding to the hydraulic shock absorber 1 at the lower end portion 1a, it is possible to firmly fix.

Although the embodiment has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and can be changed without departing from the gist of the invention.
For example, an embodiment has been described in which, of the protrusions 8 and 9 formed on both sides in the axial direction of the mounting bracket 2 with the protruding portion 7 sandwiched therebetween, the axially upper protrusion 8 is formed to be larger than the axially lower protrusion 9. Alternatively, both may be formed to have the same size.

[0028]

As described above in detail, according to the present invention, in response to the input in the front-rear direction and the left-right direction of the vehicle,
A mounting bracket that can be supported with sufficient rigidity and strength is obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a mounting bracket of a hydraulic shock absorber showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line CC of FIG. 1;

5 is a view in the direction of arrow D in FIG.

[Explanation of symbols]

 1 Hydraulic shock absorber 1a Lower end 2 Mounting bracket 3 Curved part 4 Straight part 7 Projection part 8, 9 Protrusion

Claims (1)

[Claims] 1. A plate member is bent into a substantially U shape to form a curved portion extending in the axial direction and linear portions at both ends in the circumferential direction of the curved portion. Inside the curved portion, a hydraulic shock absorber is provided. In a mounting bracket for a hydraulic shock absorber in which a lower end portion is inserted and fixed, an outward projecting portion is provided at a substantially central position in the axial direction of the mounting bracket at a portion where the curved portion transitions to a straight portion, and the projecting portion is provided. A mounting bracket for a hydraulic shock absorber, characterized in that projections that contact the lower end portion of the hydraulic shock absorber are provided at both axial positions of the mounting bracket with the portion sandwiched therebetween.