JPH02133211A - Suspension device - Google Patents

Abstract

PURPOSE:To enable the connection of fiber reinforced synthetic resin, the component member of a suspension, to the wheel side without lowering the intensity by bending a wheel side end part and clamping it between brackets in the state of being divided vertically into two parts. CONSTITUTION:The outer end parts of leaf springs 11, 12 made of fiber reinforced synthetic resin are bent downward approximately at a right angle so as to form bent parts 13. The bent part 13 is held between an upper and a lower metal brackets 21, 26, connected by bolts 31 and nuts 32, and the fitting piece 24 of the upper bracket 21 is connected to a knuckle. A bolt hole is not thus bored directly in the leaf spring, and thereby the sectional area of the plate end part is not decreased so as to enable the connection without lowering the intensity.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to #I! The present invention relates to a suspension device including an i-fiber-reinforced synthetic resin plate as a part of its constituent members, and particularly relates to a terminal structure of the fiber-reinforced synthetic resin plate and a connection structure with a heavy wheel side.

[Prior Art] In Japanese Patent Application No. 62-57824, the present applicant constructed a part of the suspension component with a leaf splinter,
We have proposed a suspension device in which this leaf splinter is connected to the wheel side and supported on the heavy body side at a portion separated from the connected portion. According to this, a shock absorber with a shock absorber structure that eliminates the need for a coil splinter can be adopted, and the LIL height adjustment function can be easily added without changing the basic structure of the shock absorber and suspension. I can handle it.

On the other hand, in a case where a metal spout is bolted to the end of a fiber-reinforced synthetic resin (hereinafter abbreviated as FRP), the end of an FRP leaf spring is used to prevent expansion in the width direction. It is known from Japanese Unexamined Patent Publication No. 62-224741 that a member is provided. According to this, by restraining the end portion by the blocking member, the FRP
The strength of the connection between the manufactured lease sublink and the metal eyepiece can be improved.

[Problem to be solved by the invention] However, due to the need for bolt connection with the metal eyepiece, FR
The end of the P leaf spring has a structure with a bolt hole, and there is no reinforcing fiber in the bolt hole.
The cross-sectional area of the end of the FRP leaf spring decreases, causing a decrease in strength.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a suspension device that includes an FRP board as a part of its constituent members, and which enables the suspension to be connected to the wheel side while maintaining strength without reducing the cross-sectional area of the end of the FRP board. The goal is to provide equipment.

[Means for Solving the Problems] In order to achieve the above-mentioned problems -1-, the present invention consists of a part of the suspension engine 1 component member made of an FRP board, and connects the FRP board to the wheel side. The FRP plate is formed by bending an end part of the FRP board that is supported on the vehicle body side and connected to the wheel side, and the bent part is held between brackets and connected to the wheel side.

Specifically, the bracket is divided into upper and lower members and has abutting portions on the outer and inner surfaces of the bent portion, and the FRP plate contacts the bent portion via the bracket abutting portion. Its outer and inner surfaces are designed to receive lateral forces.

[Operation: Hold the bent part formed on the FRP board with brackets,
That is, since the end structure does not require bolt holes, the FRP board can be connected to the wheel side while maintaining its strength without reducing the cross-sectional area of the end.

If the bracket divided into the members below L is provided with contact parts for the outer and inner surfaces of the bent part of the FRP board, the FRP board can be attached to the outer and inner faces of the bent part via this bracket contact part. Can receive lateral force from the side.

[Example] Examples will be described below based on the accompanying drawings.

In FIGS. 1 and 2 showing a Tuffle wishbone type suspension, 1 is a wheel, 2 is an axle, 3 is a knuckle, and 4 is an upper arm.

The FRP leaf spring 1112 in the vehicle width direction also serves as a lower arm, and each FRP leaf spring 11.12 has an arched shape curved to one side between both ends.

In FIG. 1, the outer end of the leaf spring 11 is connected to the lower part of the knuckle 3 at a support point A, while the inner end of the leaf spring 11 is connected to the vehicle body 9 at a support point B.
It is supported in a fixed state.

In FIG. 2, a long leaf spring 12
Attach both ends to the bottom of the left and right knuckles 3.3 at support points A and A.
The leaf spring 12 is rotatably connected to the vehicle body 9 via a support member 8.8, and the leaf spring 12 is supported so as to be slidable at three left and right support points CC, and to be slidable at two support points IL. There is.

In addition, whether it is not shown or not, the I of each leaf spring 11 and 12
An arbitrary vehicle height adjustment actuator is interposed between the l1 space and the vehicle body 9, and a shock absorber or a shock absorber is provided on each wheel l side.

As described above, there is a suspension in which the wheel l side and the vehicle body 9 side are connected by each leaf spring 11, 12 in the vehicle width direction, and each wheel l is connected to the leaf spring 11, 12 of the vehicle body 9 side.
By making the shock absorber always move downward due to the elastic force of the shock absorber, a single shock absorber can be used, which eliminates the need for coil blinking. Furthermore, by connecting the left and right suspension shims 1 with a leaf splinter 12 as shown in FIG. 2, a stabilizer function can also be provided. Furthermore, each leaf spring II
, 12 by changing the bending stress applied by the actuator to one side or downward as indicated by arrow F, and by changing the downward biasing force applied to each wheel l due to the reaction force, the vehicle height adjustment function is achieved. We have the following equipment.

In the above, as shown in FIG. 3, the outer end of each FRP leaf spring 11, 12 is formed as a bent portion 13 that is bent downward at a substantially right angle. The bending portion 13 may be formed simultaneously with or after forming each leaf spring 11.12.
The orientation of all reinforcing fibers is shown in FIG.

The above folded portion 13 is shown in FIG.
It is held between metal brackets 21 and 26. As shown in the figure, the flat plate-shaped upper bracket 21 is wider than the leaf spring 11.12, and is provided with bolt connecting pieces 22.22 on the front and rear thereof, and has a downwardly extending portion on the outside that abuts the bent portion 13 from the outside. A mounting piece 24 is provided via the stepped surface portion 23. Further, the lower bracket 26 comes into contact with the lower surface of the leaf spring 11.12 at a position L in front of the bent portion 13, and is provided with a downward projecting piece 27 on the outside thereof, which comes into contact with the bent portion 13 from the inside. , the front and rear abut against the front and rear surfaces of the leaf splinter 11 and 12.
8.28 with a bolted connection piece 29.29.

With such an upper bracket 21 and a lower bracket 26, the −L front portion of the bent portion 13 is
Hold each connecting piece 22, 29, front and rear as shown in the figure.
are connected with bolts 31 and nuts 32 to be integrated with the end portions of leaf springs 11 and 12.

The mounting piece 24 of the upper bracket 21 is connected to the lower part of the knuckle 3 via a pole joint 25 covered with a rubber leaf as shown in the figure.

According to the above terminal structure, when a force from the outside to the inside shown by the arrow Fa in the sixth UA is input to the upper bracket 21, the leaf springs 11, 12 are bent so as to come into contact with the upper bracket cross section 23. Part 1
If a force is applied to the lower bracket 26 from the inside to the outside as indicated by the arrow Fb, the leaf spring 11.
Reference numeral 12 receives the force from the inner surface 13b of the bent portion 13 that the lower bracket projecting piece 27 comes into contact with. In response to inputs from other directions, the leaf springs 11, 12 may also receive force from the surface.

In this way, the FRP leaf splinter 11.12 receives input from the suspension by using a bracket 2 that holds the front part of the bending part 13, instead of using bolt holes as in the conventional case.
1.26, it is possible to reasonably stop receiving the request.

Here, the bent portion 13 does not necessarily have to be perpendicular to the center line of the leaf springs 11 and 12 as shown in FIG. .

Additionally, the leaf spring may be connected to a separately provided lower arm, or the leaf spring may be connected to or used in combination with the upper arm, and the suspension type is not limited to the double wishbone type, but can also be applied to strut types, etc. It is something. Furthermore, the present invention is also applicable to a vehicle using leaf springs in the front-rear direction.

[Effects of the Invention] As described below, according to the present invention, the bent portion formed on the FRP plate is sandwiched between brackets to form an end structure, which eliminates the need for bolt holes, so that the cross-sectional area of the FRP plate end can be reduced. It is possible to maintain the strength and connect it to the wheel side without any reduction in strength.

Then, as in the example, by providing contact parts on the outer and inner surfaces of the bent part of the FRP plate in the bracket divided into the members below L, the FRP board can be moved to the bent part via the contact part of the bracket H. The outer and inner surfaces can receive lateral forces.

4.1 A-side hour wheel theory II Fig. 1 is a schematic front view showing only the left and right side suspension to which the present invention is applied, and Fig. 2 shows both left and right suspension suspensions to which the present invention is applied. A schematic front view, FIG. 3 is a perspective view of the end of the FRP board, FIG. 4 is a front view showing the fiber orientation, and FIG. /I is an exploded perspective view showing the end structure of the present invention, and FIG. 6 is a cutaway front view of the main part showing the assembled state f island]A.

In addition, in the drawing, l is a jli ring, 3 is a knuckle, 9 is a +p body, 11.12 is an FRP board, 13 is a bent part, 21.2
6 is a bracket, 23.27 is a contact portion for the bent portion, A is a support point on the wheel side, and B and C are support points on the vehicle body side.

patent

Claims (1)

[Claims] 1. A part of the suspension component is composed of a fiber-reinforced synthetic resin plate, and the fiber-reinforced synthetic resin plate is connected to the wheel side and supported on the vehicle body side at a part separated from the connection part. A suspension device characterized in that the fiber-reinforced synthetic resin plate is formed by bending an end portion connected to the wheel side, and the bent portion is sandwiched between brackets and connected to the wheel side. 2. The bracket is divided into upper and lower members and has abutting portions on the outer and inner surfaces of the bent portion, and the fiber-reinforced synthetic resin plate contacts the bent portion via the bracket abutting portion. The suspension device according to claim 1, wherein the suspension device is adapted to receive lateral forces on the outer and inner surfaces of the suspension device.