HU194771B - Rubber suspension - Google Patents

Abstract

The invention relates to a suspension for vehicles or structures subject to vibration, which, as a self-supporting spring unit, are connected to the frame structure of the vehicle by means of parallel swing arms. The springing is provided by a vulcanized rubber spring (1) between the two sheared metal plates caught between the two swing arms (3), which are connected to the longitudinal or transverse swing arms by means of a metal plate (3). The hardness of the rubber spring is preferably 45-70. (Figure 2). -1-

Description

FIELD OF THE INVENTION The present invention relates to a Suspension for use in vehicles or in all areas requiring damped suspension, which is attached as a separate spring unit to the frame structure of a vehicle or device by means of swing arms. The spring is cushioned between metal plates by a vulcanized rubber shear, which is attached to the swing arms by means of a screw connection.

The use of rubber springs for vehicle suspension is known, although their use is more common as auxiliary springs than as main springs. Its use as a main spring can also be found in many inventions, in which the use, shape, gripping and thus operation of the springs are different. Most solutions utilize a rubber spring, such as those described in U.S. Patent Nos. 3,737,174, British Patent No. 1254,740, U.S. Patent No. 3,895,819 and U.S. Patent No. 3,759,541.

The application of pressurized rubber springs is limited, since compression of the rubber can only provide a relatively small spring path. Intermediate swing gear can increase the spring travel, but this results in increased use of the swing arms.

Advantageous springing properties are achieved by shear-vulcanized metal sheet solutions, some of which are also known, have different gripping and actuating modes and determine applicability. U.S. Pat. No. 4,213,633 discloses a two-state vehicle suspension mode with a predominantly sheared rubber tubing included in a rigid axle frame. According to German Patent Publication No. 3,332,194 A1, a rubber spring trapped between two metal plates is fixed and actuated in an oblique action and is thus subjected to shear and compression. As described in German Patent Publication No. 2,748,193 A1, hollow-shaped profile rubber is vulcanized between two bushings of different diameters, which can thus be used for shear longitudinally and twist-shear stress perpendicular to the bush. U.S. Pat. No. 3,692,326 discloses a rigid-axle suspension with a pivoting linkage mechanism that operates through a linkage of the pivoting levers for a vertically-oriented, shear-proof rubber spring and a rubber spring housing attached to the chassis. A similar solution is disclosed in U.S. Patent No. 3,793,443, wherein one end (armament) of a rubber spring vulcanized between metal plates is fixed to the chassis and the other to an independent pivot arm. German Patent Publication No. 2846608 A1 provides a solution for the suspension of heavy vehicles by longitudinal gears.

A common feature of the prior art solutions is that one arm of a rubber spring vulcanized between the two metal sheets is always directly or indirectly attached to the chassis or to the longitudinal arm, while the other arm is attached to the spring unit itself (swingarm, shaft, etc.).

Vulcanized rubber tubing fastened between metal plates between double swing arms, as a spring-mounted implementation of a four-pivot swing system, is not known in the art or in the literature.

It is an object of the present invention to provide and install a self-priming main unit having the following favorable features.

- light,

- have a soft, elastic mgose,

- allow low center of gravity,

- do not require complicated installation technology and maintenance,

- replace the shock absorber.

It is an object of the present invention to provide a shear rubber vulcanized between metal plates by a screw connection between two parallel pivot arms so as to be attached to the vehicle (or equipment) frame structure as a self-adhesive unit via the pivot arm.

When the vehicle is in motion, the two metal plates move relative to each other by moving the swinging arms, causing the spring to shear with the same shear force as it strives to reset the two swinging arms and thus the swinging arms. The amount of shear force can be selected depending on the loading parameters of the rubber tubing used (span, shore hardness, rubber composition). The vulcanized rubber tubing is preferably fastened to the swinging arm by a screw connection. The rubber tubing thus captured forms a stand-alone molding unit and does not need to be mounted directly on the chassis (frame structure) of the vehicle (or other equipment) as is known in the prior art.

The suspension according to the invention uses a vulcanized gyropo between the metal plates, which can be undivided and divided depending on the load requirements. Undivided design means vulcanized rubber between two metal sheets. The adhesive stiffness can be increased according to the load requirements by applying the rubber in layers to vulcanized, i.e., split. The rubber shore hardness of the rubber used should be set between 45 and 70 Shore cushions with the rubber composition, also determined by the load.

The suspension system of the damped suspension according to the invention is widely applicable in motor vehicles (cars, trucks, agricultural vehicles, etc.), trailers, caravans; in roller carriers or other ambulances, rolling containers; laboratory for internal suspension of mobile measuring instruments and dashboards of dashboards.

It is particularly advantageous for vehicles designed for the disabled and for transporting patients where the passenger's vibration sensitivity is higher than average, and therefore a more gentle grip is warranted.

The solution of the present invention does not require any complicated mounting technology, but also creates a lightweight, soft glue retrofit. The rubber suspension chassis is not damaged by water, making it suitable for special trailers such as boat carriers or other water vehicle carriers.

The present invention eliminates the use of conventional shock absorbers in vehicles due to its high internal energy absorbing property.

The invention is illustrated in detail in Figures 1, 2, 3 and 4.

Fig. 1 shows a front view of the mounting of a rubber stick clamped between the link arms in a static, weight-laden condition only.

Figure 2 illustrates the same solution in dynamic end position during operation.

Fig. 3 is a side view of a rubber tubing mounted between the longitudinal arms, fastened with a screw connection, only in the laden condition.

Figure 4 shows a suspension for instrument protection. In the figures (in uniform markings) there is shown a rubber spring (1) which is secured by screws (2) to the swivel arms (3), which are fixed to the swivel brackets (6) by means of slider bushes (5) and to the eyelets (7). jack. Attached to this is a bearing housing (8) which holds the hub in relation to the shaft, to which the wheel rim and tire (9) are fixed by means of wheel bolts. The unloading rubber bracket (10) is fixed to the frame structure (11), which is intended to limit the displacement (3) of the pivoting lever (12) due to the load mass force (12), or to relieve the permitted spring path (13). The change in track gauge (14) during suspension depends on the angular rotation of the pivot arms (3).

The pivot arms (3) have the same length as the four-pivot pivot system, and since the opposite pins are parallel, this determines the current position of the camber. Figure 1 shows the baseline, a

Figure 2 illustrates the system in the fully loaded condition during operation, wherein the pivoting arm (3) rests on the unloading rubber bracket (10). In the embodiment of the longitudinal arm shown in Fig. 3, the suspension according to the invention can also be applied to the driven wheels, and thus, of course, to the track track.

Fig. 4 shows a shaking sensitive instrument (or fragile goods) device (7) placed in a vehicle, whereby the two metal plates are connected to the parallel pivot arms (3) by means of vulcanized rubber springs (2). The pivot points are suspended by pivot arms (5) which are to be suspended (5) by means of retaining screws (6) which are secured on the part subject to vibration.

At the spring-loaded end of the swing arms (3), the swing-arm assembly (16) holding the instrument is suspended at a base point (20) fixed on the pivot point or on the support screw (5). The parallelism of the pivot arms (3) is ensured by a spacer bar (15) of articulated design.

The permissible spring path (13) of the swinging frame (16) is secured by end-strain relief (10) rubber brackets.

The instrument (17) is mounted on the swinging frame (16) using inserts (19) having anti-vibration properties.

Secure the device (17) with the retaining screw (18).

The inertial mass forces acting on the dynamic shaking base member (21) and the instrument (17) actuate the rubber spring suspension, which preferably provides damped suspension.

Claims (7)

Claims A rubber suspension suspension, in particular a vehicle wheel suspension having a vulcanized rubber shear spring between metal plates, characterized in that the metal plates of the rubber spring (1) are secured between two parallel pivot arms (3) and are provided as a separate suspension device (vehicle). and connected to the wheel connector (7). Rubber suspension for protection primarily of vibration structures having a vulcanized rubber shear spring between the metal plates, characterized in that the metal plates of the rubber spring (1) are secured between two parallel pivot arms (3) and form a separate spring unit (21). ) and coupled to the swinging frame (16) (e.g., an instrument or bracket for fragile goods). Suspension according to claim 1 or 2, characterized in that the parallel pivot arms (3) are arranged perpendicular to the direction of travel. Suspension according to claim 1 or 2, characterized in that the parallel pivot arms (3) are arranged parallel to the direction of travel. Suspension according to Claim 1 or 2, characterized in that the parallel pivot arms (3) are disposed in an oblique manner with respect to the driving direction. 6. Suspension according to any one of claims 1 to 4, characterized in that the parallel pivot arms (3) are of equal length. 7. Suspension according to any one of claims 1 to 4, characterized in that the rubber spring (1) has a Shore hardness of between 45 and 70.