DE2229663A1 - SPRING AXLE SUSPENSION FOR MOTOR VEHICLES - Google Patents

Description

ⁿ Spring-loaded axle suspension for motor vehicles "(addendum to patent .... (patent application P 21 00 048.6)

The invention "relates to a resilient axle suspension for motor vehicles, wherein the axle body is located on two sides of the vehicle center, made of at least two leaf springs or Spring leaves existing longitudinal swing is attached. Mach Patent .... (patent application P 21 00 048.6) is one of them Axle suspension designed in such a way that one of the leaf springs L. has a constant moment of resistance over its effective length and on the main vehicle body by means of a hinge joint with a joint axis normal to the vehicle center plane is articulated, while a second of the leaf springs is a parabolic spring with a weaker towards the hinge joint Is the moment of resistance that is stored in the area of the joint of the rocker arm so that there are vertical forces can transmit, but torsional forces acting around the longitudinal direction of the rocker, preferably by means of a corresponding

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- Dodges 2 game at its storage point.

The present invention aims to improve the in the application P 21 00 048.6 described arrangement. The disclosure of the application P 21 00 04-8.6 is in its entirety as in to view the present application included.

In the arrangement according to patent .... (patent application P 21 00 048.6) the play between the normal leaf spring and the parabolic spring in the area of the hinge pin is described as an air gap to watch. The disadvantage of such an arrangement is the completely free mobility of the two springs against each other, because when driving on bad roads the two springs hit against each other under certain load conditions, so that a rattling noise occurs. The object of the invention is to eliminate this rattling noise without restricting mobility of the handlebar (swing arm).

A resilient axle suspension for motor vehicles in which the axle beam at two on either side of the center of the vehicle two leaf springs existing longitudinal swing is attached and in the according to patent .... (patent application P 21 00 048.;. 6) one spring (guide spring) has a constant moment of resistance over its length and on the main vehicle body is articulated by means of a hinge with a hinge axis normal to the vehicle longitudinal center plane, wherein the end of this spring is designed as a spring eye which engages around a hinge pin, while the other leaf spring is a parabolic spring with a moment of resistance which becomes weaker towards the hinge joint, the end of which is the spring eye wraps around so that the parabolic spring can transmit yertical forces at this end, but in the longitudinal direction to avoid torsional forces acting on the swing arm capable, is characterized according to the invention in that

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to the end of the looped around the eye of the guide spring Parabolic spring supports are formed that rest on the eye without play. The requirement for mobility of the parabolic spring in their longitudinal direction while avoiding their torsion can advantageously be met in that the conditions V-shaped or bead-shaped cross-section. This avoids significant torsional moments at the same time be transferred to the hinge pin.

To make assembly easy and a tight fit To achieve the hinge pin in the main vehicle body, a clamp attachment is in a further embodiment of the invention suggested. This is expediently designed in such a way that that the bearings for the hinge pin slotted radially and corresponding clamping screws are arranged so that the Screws touch the hinge pin and thus also provide additional security if the clamping screw is insufficiently tightened. be guaranteed. They are advantageously located in the axial direction of the hinge pin and are coaxial with it between the side edges of the guide spring and the main vehicle body Polyamide washers. These disks are primarily used when cornering on the axle occurring axial forces through the guide springs in initiated the main body of the vehicle.

A bearing bush or cylindrical bearing sleeve between the The spring eye of the guide spring and the hinge pin is expediently longer than the spring eye is wide. Through this the lowest possible specific bearing load is achieved between this bearing bush and the hinge pin. The protruding ends of the bushing take the aforementioned polyamide axial washers on. This arrangement has the advantage that, during assembly, the leaf springs are attached to the bearing bushing Polyamide thrust washers as one unit in the ^

^ 09883/0048

Vehicle main body can be pushed, whereupon only the hinge pin must be pushed into the socket. At the same time, this arrangement results in a labyrinth-like manner Sealing between the spring eye and the hinge pin, see above that dirt is largely kept away from the storage.

The invention is explained below using an exemplary embodiment explained with reference to the accompanying drawing. Show it:

Fig. 1 a of Fig. 3 of the H _a uptpatentes corresponding representation of a link in the form of a rocker,

FIG. 2 shows a section corresponding to the section plane II-II of FIG. 1 through a particular one Embodiment of the swing arm mounting and

FIG. 3 shows a cross section of the parabolic spring with a different cross-sectional shape on that of FIG. 2 ″ Interface"

At the end of the parabolic spring 18, which uan the eye 26 of the guide spring 16 is looped, requirements are 70 tind. 72 molded, the play-free on the. Eye 26 rest. To create these conditions, the looping end is a parabolic spring 18 in its vertically highest and lowest range Divide, so above and below, deformed in cross-section, and although according to FIG. 2 to a Y-shaped and according to FIG. $ au a bead-shaped cross-section · In the areas highlighted in FIG. 1, above and below which are to be deformed the looping end 7 ^ according to FIG. 3 has a longitudinal rib (or a bulge) 76. The apex of these two butts 76 or the vk run parallel to one another and essentially horizontally, as can be clearly seen from FIG

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22296S3

is. This shape makes it possible that the parabolic spring can move not only in its longitudinal direction but also around its longitudinal axis without being twisted, and that no significant torsional moments are transmitted to the hinge pin 14 either. The hinge pin 14 is r in Fah generating main body 10 is fixed by clamping, do some light Hontage and a fixed seat of the bolt to achieve this, the bolt bearings are radially slotted and clamping screws 78., preferably two clamping screws, are arranged so that the pivot pin 14 tangent and thus offer an additional security even if the clamping screws or one of them should be insufficiently tightened.

In general, the supports consist of ribs, bulges or cutting edges, which are located in the longitudinal center "of the parabolic spring leaf and lie in the middle of the spring eye. preferably made of polyamide, introduced into the main vehicle body 10. In order to achieve the lowest possible specific bearing load on the bearing bush 28 and the pivot pin 14, the length of the bearing bush 28 is made greater than the width of the spring eye 26 Bushes end the axial washers 80. This arrangement and dimensions make it possible during assembly to push the spring assembly consisting of the two springs with the attached axial washers 80 as a unit into the main vehicle body 10, whereupon only the hinge pin 14 is inserted into the socket Needs to be pushed. The axial washers continue to yield a labyrinth-like seal between the spring eye and hinge pin, so that dirt is largely kept away from the storage. The bearing bush is made of one

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material common for such sockets.

When in doubt, all are "described and / or illustrated here." Features essential to the invention either individually or in any meaningful combination. Protection is desired for that which is objectively capable of being protected. .

Patent claims:

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Claims (1)

Patent claims: 1) / feeder axle suspension for motor vehicles, in which the ~ y axle body is attached to two longitudinal swing arms, which are made up of two leaf springs and are located on both sides of the vehicle center, and in which, according to patent ..... (patent application P 21 OO 043.6), one spring (Guide spring) has a constant moment of resistance over its length and at which. The main vehicle body is articulated by means of a hinge joint with a hinge axis normal to the longitudinal center plane of the vehicle, the end of this spring being designed as a spring eye which surrounds a hinge pin, while the other leaf spring is a parabolic spring with a moment of resistance that becomes weaker towards the hinge joint, the end of which wraps around the spring eye so that the parabolic spring can transmit yertical forces at this end, but is able to evade torsional forces acting around the longitudinal direction of the rocker, as characterized in that the end (30, 74-) of the parabolic spring (16) looped around the eye (26) of the guide spring (16) 18) supports (7 ^Ü , 72) are formed that rest on the eye (26) without play. 2) axle suspension according to claim 1, characterized by conditions that exclude play in the vertical direction. 3) axle suspension according to claim 1 or 2, characterized in that "two supports, one above and below, are provided. 4) axle suspension according to claims Λ - 3t characterized in that the supports from the 309883 / 004Q Cross-section of the wrap-around end of the parabolic spring like this are formed that, starting from the central longitudinal plane of the wrap end and the spring, the wrap end zii. is opened out towards the sides (Fig. 2 and 3). ^ Axle suspension according to claims 1-4, thereby marked that the begο nut en editions have ribs, bulges or cutting edges resting on the spring eye in their center. 6) axle suspension according to claims 1-5 »marked thanks to molded supports with a V-shaped cross-section. 7) axle suspension according to claims 1-5) thereby characterized in that the molded supports have bead-shaped cross-section. 8) axle suspension according to claims 1-7} thereby ' marked that the in the spring eye The bushing used is longer than the width of the spring eye and that axial washers on the protruding bushing ends (80) are stored. 9) axle suspension according to claims 1-8, thereby characterized in that the pivot bolt (14) fastened by clamp bearings in the main vehicle body (10) is. 309883/004