JPS5871209A - Rear suspension of automobiles - Google Patents

Abstract

PURPOSE:To improve the tendency of toe-in at bumping by supporting a suspension arm of a rocking arm type rear wheel suspension device by means of two supporting members of which each comprises internal and external sleeves capable of making relative rotary and relative axial movement, with respective axes crossing each other on the horizontal projection plane. CONSTITUTION:Respective axes of two supporting members 8 and 9 which are adapted for rockingly fitting a suspension arm 4 to a chassis sub-frame 6 crossing at an intersecting angle alpha on the horizontal projection plane. The first supporting member 8 has internal and external sleeves 41 and 42 circumferentially rotatable with a resilient interposer 40 therebetween while the second supporting member 9 has internal and external sleeves 26 and 28 rotatably joined with a resilient interposer 24 therebetween and has flanges 32 and 34 which are tilted at an angle beta from the vertical line 30' perpendicularly crossing an axis 30. Rocking of the suspension arm 4 at bumping is transmitted to the second supporting member 9 in the form of movement in the direction A, which turns the suspension arm 4 while pulling it in the direction of the center line of the car's body, to toe in the wheels.

Description

DETAILED DESCRIPTION OF THE INVENTION In detail, the present invention relates to a swing arm type rear suspension.

Conventionally, for example, there has been a semi-trailing type rear suspension as shown in Japanese Utility Model Publication No. 53-197/07/3, and a strut type independent rear suspension as shown in Japanese Patent Publication No. 5-3-761. In this system, the wheels are supported by suspension arms that are attached to the vehicle body so as to be able to swing vertically.

When such a suspension arm is used, compared to an axle-type rear suspension, the amount of unsprung N is lighter and
It has the advantage of having a large anti-dive effect, a large degree of design freedom in terms of maneuverability and stability, and the fact that the differential gear and propeller shaft do not swing, allowing the floor to be lowered. On the other hand. The swing arm type suspension as described above has the following drawbacks. In other words, in order to prevent the opus steer characteristic when turning, it is desirable to exhibit a toe-in tendency during panning (when the suspension arm swings in the direction of shortening the spring provided between the arm and the vehicle body). However, the swinging speed of the suspension arm 4-
Since the space is large, arranging the suspension arm to create a toe-in tendency is subject to significant space constraints.

Furthermore, when the toe-in tendency is determined by the hardness and arrangement of the elastic member for attaching the suspension arm to the vehicle body vcj)y, the tuning toe-in setting of the elasticity WI5+J is a disadvantage of being an inner cone.

The object of the present invention is to provide a rear suspension for an automobile that solves the above-mentioned conventional problems.
The features of the 4'iltFI are that the suspension arm rotatably supports the wheels, and the attachment point of the suspension arm on the vehicle body Ifυ is attached to the suspension arm for swingingly attaching the suspension arm to the vehicle body. Placed 7'1. The Kouki support member consists of a cylinder and an outer cylinder that can be rotated in the circumferential direction via an elastic body, and one support member disposed on one suspension arm rotates around both of its axes. The glands intersect in the horizontal projection plane, and L! At least one of the supporting members is configured to move relative to each other in the axial direction as the inner cylinder and the outer cylinder move relative to each other. The present invention also includes:
If desired, the support member, which moves relatively in the axial direction as the inner surface and the outer surface move relative to each other, is provided with flanges that are inclined #4 with respect to the axis and face each other on each of the cylinder and the outer cylinder. , an elastic body is interposed between the flanges.

Further, in the present invention, if desired, the suspension arm may be a semi-trailing arm in which a straight line connecting the support points of both support members is inclined with respect to the center line of the vehicle body. Since the present invention is configured as described above, in addition to the many advantages described above of the swing arm type rear suspension, the present invention has 71
It has a strong tendency to toe-in at 71 o'clock, and is excellent in terms of maneuverability and stability.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the rear suspension of the automatic east car according to the second embodiment has a carrier 2a that rotatably supports the wheels 2.
Suspension arm (semi-trailing arm) 4 fixed to the vehicle body 1 (subframe 6 to be attached,
Each suspension arm (semi-trailing arm) 4 includes a first support member 8 and a second support member 9, each of which is disposed on each suspension arm (semi-trailing arm) 4 in order to swingably attach the suspension arm 4 to the subframe 6. Both support members 8.

9 is a differential gear case located in the center of both vehicle wings 2, which is arranged so that the straight line connecting its support points is inclined with respect to the center line of the vehicle body. Input i of the differential gear placed inside the case 10
l11 is connected to the drive source via the propeller shaft l4, and output II of the 11-day 7 allencial gear (
ft is connected to the rear end of the suspension arm 4 via an axle shaft 16. As shown in FIG. 2A, the first support member 8 is composed of an inner cylinder 4l and an outer cylinder 42 that are rotatably connected to each other in the circumferential direction via the elastic body 4. The inner cylinder 4l is fixed to the bracket 22 protruding from the subframe 6 by bolts 20, respectively. Diagram B
11 in the circumferential direction through one elastic body 24 as shown in K.
It has an inner cylinder 26 and an outer cylinder 28 that are operably connected to each other, and the inner cylinder 26 and the outer cylinder 28K are inclined so as to have an intersecting angle β with respect to a perpendicular 3()' which is perpendicular to the common axis 30 of both. , and a cylindrical flange 82 and an outer flange 84 which are parallel to each other are provided. The inner cylinder z6 is fixed to the bracket 86 protruding from the subframe 6 by bolts 20)
A suspension arm (semi-trailing arm) 4 is fixed to the outer cylinder 28. The first support member 8 and the second support member 8
The axes of the supporting member 9 are arranged so as to intersect with each other at an angle α in the horizontal projection plane. The first support member 9 has a cylinder 26
is fixed to the bracket 86, and when the outer tube 28 is turned in either direction vcl by the suspension arm 4 from the state shown in FIG. Moving. In the configuration described below, when the wheel 2 bumps when turning, the suspension arm (semi-trailing arm) 4 moves in a direction that shortens a spring (not shown) provided between the arm 4 and the vehicle body. oscillate. At this time, the first support member 9 moves in the L-A direction to rotate the suspension arm 4 while drawing it toward the vehicle center line, so that the wheel 2 becomes toe-in.

In the second embodiment, as shown in FIG. 3, the first support member 8 is arranged on the inside, the first support member 9 is arranged on the outside, and the first support member 9 has Franz 82 and 84 arranged on the outside of the vehicle body. It consists of The other configurations are the same as in the first embodiment, and the same members as in the first example are given the same reference numerals and their explanations will be omitted. Second fruit! In this example, when the wheel 2 bumps, the first support member 9 rotates the suspension arm 4 while pushing it in the direction of the center line of the vehicle body, so the wheel 2 becomes toe-in.

The third embodiment is an example of a strut type rear suspension, and as shown in Fig.
A first support member 8 and a second support member If are arranged at the λ attachment points of the vehicle body 11411, and one support member 8.9 is attached to the vehicle body 11411.
: The resuspension arm 4 is attached to the subframe (1 and cross frame 12).

and suspension arm 4. A carrier 2a is rotatably attached to the tip of the carrier 2a, which supports a wheel 2 so as to rotate on its own axis, and has a lower end of a strut (not shown) fixed thereto.

1: The configuration other than the above is the same as that of the first example, and the same members as in the first embodiment are given the same reference numerals and their explanations will be omitted. In the third embodiment, when the vehicle body bumps, the second support portion 9 rotates the rear attachment point of the suspension arm 4 while pushing it outward from the vehicle body, resulting in a double wheel win.

Note that the present invention can also be applied to types of suspensions other than the above-mentioned embodiments, such as full trailing type suspensions.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment, Fig. 1 A and B are cross-sectional views showing the support members that support the suspension arm, Fig. 3 is a plan view of the first embodiment (+11), and Fig. 1 is a plan view of the It is a plan view of the third embodiment. 2... Wheels 4... Suspension arms 6...
......Subframe 8...First support member 9...First support member 9O...Differential gear γ□ case 12... Cross frame 14...
・・・・・・ Propeller shaft 16・・・・・・・・・
・ Axle shaft 22...Rubber bushing 26......Rubber bushing 28...Go to the patent section Toyo T-gyo Co., Ltd. Figure 2 A No. 2 r-q B C Fig. 3 Fig. 4 Director General of the Patent Office Shima 1) Haruki Tono J Display of the case Showa J Otsu Year Patent Application No. 1 Otsu 9I) // No. 2, Title of the invention Automobile Ryazasu Pension 3 Relationship with 11 amendments Name of applicant (313) Toyo Kogyo Co., Ltd. 4 Agent 6゜7, A. Yo. 3.1 Understanding the scope of the claims of the specification and detailed description of the invention w Drawing (1) The scope of the claims is supplemented as shown in the attached sheet. (2) Meiwa Shu, page 3, line 13, “manipulation 1” = “manipulation”
J Stop. (3) In the same book, 4L, line g, line 1, 1 chuyu = ng toin 1 is corrected to ``tuning, toin mouse''. (4) On page 2, page 2, line g of the circular, correct both cars @1 marked as 1 to ``both axles.'' (5) Correct Figure 1 as shown in the attached sheet. Claims (1) A suspension suspension arm that rotatably supports a wheel; a support member disposed at each of two vehicle body attachment points of the suspension arm for swingably attaching the suspension arm to the vehicle body; The supporting member is composed of an inwardly facing member and an outwardly facing member that are rotatable in the circumferential direction through an elastic body, and one supporting member disposed on one suspension arm has both axes thereof. The two supporting members intersect in the horizontal projection plane, and at least one of the two supporting members is configured to relatively move in the axial direction as the inner cylinder and the outer surface rotate relative to each other. Car rear suspension cover. (2) The support member, which moves relative to the inner cylinder and the retaining cylinder in its axial direction as it rotates relative to the inner cylinder, is provided with flanges on each of the inner and outer cylinders that are inclined with respect to the axis and face each other, The rear suspension for an automobile according to claim 7, wherein an elastic body is interposed between the flanges. (3), 1. q:rpr+- The automobile rear suspension according to claim 1, which is a semi-trailing arm in which a straight line connecting the support points of both support points of the suspension tension arm is inclined with respect to the center line of the vehicle body.

Claims (1)

[Claims] /) A suspension arm that rotatably supports a wheel, and λ vehicle body attachment points f of the suspension arm for swingably attaching the suspension arm to the vehicle body.
The support members are composed of an inner cylinder and an outer cylinder that are mutually rotatable in the circumferential direction via an elastic body, and the two support members are arranged on one suspension arm. The supporting members are arranged such that their axes intersect in a horizontal projection plane, and at least one of the two supporting members moves relatively in the axial direction as the inner cylinder and the outer cylinder move relative to each other. The rear suspension of the car is timely to be configured. e) The supporting member, which moves relatively in the axial direction as the inner cylinder and the outer cylinder move relative to each other, is provided with seven runs that are inclined with respect to the axis and are opposed to each other on each of the inner cylinder and the outer cylinder. 2. The rear suspension for an automobile according to claim 1, wherein the rear suspension is constructed by interposing an elastic body between the flanges. 3) The rear suspension for an automobile according to claim 1, wherein the rear suspension is a semi-trailing arm in which a straight line connecting the support points of both support members of the suspension arm is inclined with respect to the center line of the vehicle body.