JPH0630493Y2 - Strut suspension type stabilizer mounting structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a strut suspension, and more particularly to a structure for mounting a stabilizer in the strut suspension.

2. Description of the Related Art Stabilizers for vehicles equipped with strut suspensions have been generally used in conventional arms as described in, for example, Japanese Patent Application Laid-Open No. 61-200015 of the same applicant as the present applicant. It is connected to the shock absorber via a stabilizer link pivotally attached at one end to the tip of the part and pivotally attached at the other end to a bracket fixed to the body of the shock absorber.

For example, FIG. 2 shows a conventional mounting structure of a stabilizer incorporated in a MacPherson strut suspension. In the drawing, reference numeral 10 denotes a shock absorber, a rod portion 12 of the shock absorber is pivotally supported on a vehicle body 16 by an upper support 14 which is known per se, and a lower end of a main body 18 is axially connected via a bracket 20. Two
2 is connected to a wheel support member 26 that rotatably supports the wheel 24. The wheel support member 26 is pivotally attached to the other end of a control arm 30 pivotally supported at one end by a bracket 28 fixed to the vehicle body 16 via a ball joint 32. Shock absorber rod 12
An upper seat 34 and a lower seat 36 are fixed to the main body 18 and the main body 18, respectively, and a spring 38 is mounted between these two seats. As is well known, when the steering of the vehicle, the shock absorber 10, the wheel supporting member 26, the wheel 24 is pivoted about the kingpin axis 40 connecting the center O ₂ of the center O ₁ and the ball joint 34 of the upper support.

Further, in FIG. 2, reference numeral 42 designates a stabilizer.
The stabilizer 42 has a central rod portion 44 extending substantially in the vehicle width direction, and although only one is shown in the drawing,
It is composed of a pair of arm portions 46 provided integrally with both ends of the central rod portion, and is generally U-shaped when viewed from above the vehicle. The central rod portion 44 is rotatably supported by the vehicle body 16 about an axis 50 at two positions spaced apart from each other in the vehicle width direction by a bracket 48 via a rubber bush (not shown). . The tip 46a of the arm portion 46 is pivotally attached to the tip 46a by a ball joint 52 at one end and the ball joint 5 at the other end.
4, a stabilizer link 58 pivotally attached to a bracket 56 fixed to the main body 18 of the shock absorber 10
Is connected to the main body 18 by.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional stabilizer mounting structure, the shock absorber 10 rotates around the kingpin axis 40 as described above during steering of the vehicle, and therefore the center O _{3 of the} ball joint 54 is reduced. Also rotates about axis 40.
Therefore, it is difficult to find the proper connecting position of the stabilizer link 58 to the main body 18 of the shock absorber for all the steer regions and all the wheel stroke regions from both the space and the mechanical viewpoint, and therefore the steering of the vehicle is difficult. Even when facing, it is not possible to maintain the state in which the tip of the arm portion of the stabilizer is connected to the shock absorber at an appropriate position via the stabilizer link.

Further, during steering of the vehicle, the center O ₃ makes a rotational movement around the axis 40, and the length of the stabilizer link is constant,
The shock absorber has an axis 40 by a stabilizer.
There is a problem that a moment is generated around the steering wheel, which increases the steering reaction force.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the conventional stabilizer mounting structure in the conventional strut suspension, and provides an improved strut suspension stabilizer mounting structure in which such problems do not occur. It is an object.

Means for Solving the Problems According to the present invention, the above object is to provide a shock absorber pivotally supported at the upper end and connected to a wheel supporting member at the lower end, and an upper seat fixed to the vehicle body. And a lower seat rotatably supported on the outer periphery of the shock absorber by a bearing so as to be rotatable around the axis of the shock absorber, and incorporated into a strut suspension including a spring elastically mounted between the two seats. A substantially U-shaped stabilizer mounting structure having a central rod portion and a pair of arm portions integrally provided at both ends of the central rod portion, wherein the central rod portion rotates about its axis. A front end of each arm is rotatably supported by the vehicle body, and a front end of a stabilizer link is pivotally attached to the tip at one end and pivotally attached to the lower seat at the other end. This is achieved by a stabilizer mounting structure connected to the lower sheet.

According to the above-described structure, the lower seat is rotatably supported by the bearing on the outer periphery of the shock absorber about the axis of the shock absorber, and the other end of the stabilizer link is pivotally attached to the lower seat thus supported. Therefore, even if the shock absorber rotates about the kingpin axis during steering of the vehicle, the lower seat can rotate about that axis relative to the shock absorber. Therefore, the other end of the stabilizer link does not move largely as in the case of the conventional mounting structure. Therefore, compared with the conventional mounting structure, the tip of the stabilizer arm can be maintained in a proper position with respect to the shock absorber via the stabilizer link even when the vehicle is steered. It is possible to prevent the stabilizer from being unnecessarily twisted and from exerting an excessive load on the stabilizer arm portion or the lower seat.

Also, during steering of the vehicle, the other end of the stabilizer link can float around the axis of the shock absorber together with the lower seat. Most of the reaction force is transmitted to the vehicle body through the lower seat, spring, and upper seat, avoiding acting on the shock absorber itself as in the case of the conventional mounting structure, thereby avoiding an increase in steering reaction force. can do. Further, in addition to its original function of supporting the lower end of the spring, the lower seat also has the function of connecting the other end of the stabilizer link to the outer peripheral part of the shock absorber so as to be rotatable around the axis of the shock absorber. Not only can the number of parts be reduced, the mounting structure can be simplified, and the weight can be reduced compared to the case where a bracket that can rotate relative to the shock absorber is provided independently of the lower seat fixed to the absorber. Since the spring seats the lower seat in a predetermined position around the axis of the shock absorber, the need for an independent positioning means for the lower seat can be eliminated, and the stabilizer is caused by the unnecessary rotation of the lower seat. Be sure to prevent rattling of links, etc. Can.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Embodiment FIG. 1 shows an embodiment of a mounting structure for a stabilizer according to the present invention incorporated in a MacPherson strut suspension. In FIG. 1, members corresponding to those shown in FIG. 2 are designated by the same reference numerals as those shown in FIG.

In the drawing, reference numeral 10 denotes a shock absorber, a rod portion 12 of the shock absorber is pivotally supported on a vehicle body 16 by an upper support 14 which is known per se, and a lower end of a main body 18 is axially connected via a bracket 20. It is connected to a wheel support member 26 which supports a wheel 24 so as to be rotatable around 22. The wheel support member 26 is pivotally attached to the other end of a control arm 30 pivotally supported at one end by a bracket 28 fixed to the vehicle body 16 via a ball joint 32. An upper seat 34 is fixed to the vehicle body 16 with bolts (not shown), and a lower seat 36 is rotatably supported around an axis 62 by a bearing 60 on the outer peripheral portion of the main body 1 of the shock absorber. . A spring 38 is mounted between these two seats.

In the illustrated embodiment, the bearing 60 is a thrust bearing and comprises a plurality of balls 64 annularly arranged around the body of the shock absorber and upper and lower races 66 and 68 arranged on opposite sides of the balls. The lower seat 36 is fixed to the upper race 66, and the lower race 68 is supported by the bracket 70 fixed to the main body 18. As is well known, during steering of the vehicle, the center O _{1 of the} upper support and the ball joint 3
The shock absorber 10, the wheel support member 26, and the wheel 24 pivot about a kingpin axis 40 that connects the center O _{2 of the} vehicle 4 with the kingpin axis 40.

Further, in FIG. 2, reference numeral 42 designates a stabilizer.
The stabilizer 42 has a central rod portion 44 extending substantially in the vehicle width direction, and although only one is shown in the drawing,
It is composed of a pair of arm portions 46 provided integrally with both ends of the central rod portion, and is generally U-shaped when viewed from above the vehicle. The central rod portion 44 is rotatably supported by the vehicle body 16 about an axis 50 at two positions spaced apart from each other in the vehicle width direction by a bracket 48 via a rubber bush (not shown). . The tip 46a of the arm portion 46 is pivotally attached to the tip 46a by a ball joint 52 at one end and is fixed to the lower seat 36 by a ball joint 54 at the other end.
It is connected to the lower seat 36 by a stabilizer link 58 pivotally attached to the lower seat 36.

The upper seat may be directly fixed to the vehicle body, or may be fixed to the vehicle body via the rod portion of the shock absorber and the upper support. However, in order to reliably avoid an increase in the steering reaction force, It is preferably fixed directly to the vehicle body as in the embodiment.

According to the illustrated embodiment, the lower seat 36 is supported on the outer peripheral portion of the main body 18 of the shock absorber 10 by a bearing 60 so as to be rotatable about an axis 62, and the upper end of the stabilizer link 58 is fixed to the lower seat by a ball joint 54. Since it is pivotally attached to the bracket 72, even if the shock absorber rotates about the kingpin axis 40 during steering of the vehicle, the lower seat 36 and the bracket 72 rotate about the axis 62 relative to the shock absorber. Therefore, the upper end of the stabilizer link is surely prevented from being largely moved as in the case of the conventional mounting structure, so that the tip of the arm portion of the stabilizer does not contact the shock absorber via the stabilizer link even during steering of the vehicle. It remains connected to the proper position.

Further, during steering of the vehicle, the upper end of the stabilizer link 58 can be free to move around the axis 62 of the shock absorber 10 together with the lower seat 36 and the bracket 72, so that the shock absorber rotates around the kingpin axis 40 during steering of the vehicle. Most of the stabilizer reaction force caused by the movement is due to the lower seat 36, the spring 38,
It is avoided that it is transmitted to the vehicle body through the upper seat 34 and acts on the shock absorber itself as in the case of the conventional mounting structure, and thus the steering reaction force is prevented from increasing. Further, since the lower seat 36 is properly positioned at a predetermined position around the axis 62 of the shock absorber 10 by the spring 38, an independent positioning means for the lower seat is unnecessary, and the lower seat rotates unnecessarily while the vehicle is running. The spring 38 reliably prevents the stabilizer link 58 and the like from rattling due to the movement.

When the body 18 of the shock absorber 10 moves vertically relative to the rod portion 12 due to the bouncing and rebounding of the wheels 24, the movement of the body moves through the lower seat 36, the bracket 72, and the stabilizer link 58. It is transmitted to the tip of the portion 46, which causes the central rod portion 44 to be twisted about its axis 50, thereby exerting the function of the stabilizer.

Although the present invention has been described in detail with reference to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of a stabilizer mounting structure for a strut suspension according to the present invention, and FIG. 2 is a schematic configuration diagram similar to FIG. 1 showing a stabilizer mounting structure for a conventional strut suspension. . 10 ... Shock absorber, 12 ... Rod part, 14
…… Upper support, 16 …… Car body, 18 …… Main body, 2
0 ... Bracket, 24 ... Wheel, 26 ... Wheel support member, 28 ... Bracket, 30 ... Control arm, 32 ... Ball joint, 34 ... Upper seat, 36 ... Lower seat, 38 ... Spring, 40 ...
… Kingpin axis, 42 …… Stabilizer, 44 …… Center rod part, 46 …… Arm part, 48 …… Bracket,
52, 54 ... Ball joint, 56 ... Bracket, 58 ... Stabilizer link, 60 ... Bearing, 64
…… Ball, 66 …… Upper race, 68 …… Lower race, 70,72 …… Bracket

Claims (1)

[Scope of utility model registration request] 1. A shock absorber pivotally supported by a vehicle body at an upper end and connected to a wheel supporting member at a lower end, an upper seat fixed to the vehicle body, and a bearing so as to be rotatable about an axis of the shock absorber. The shock absorber is incorporated in a strut suspension including a lower seat supported on an outer peripheral portion of the shock absorber and a spring elastically mounted between the two seats, and is integrally provided on a central rod portion and both ends of the central rod portion. And a pair of arms and a substantially U-shaped stabilizer mounting structure, the central rod is rotatably supported on the vehicle body around its axis, and each arm has a tip at one end. And a mounting structure for a stabilizer connected to the lower sheet via a stabilizer link pivotally attached to the tip end and pivotally attached to the lower seat at the other end.