Axle suspension for vehicles

The invention relates to a suspension for a one rigid preferably tubular axle body having Vehicle axle, with at least one each guide link both sides of the vehicle longitudinal center plane, which with its hinged front end to a chassis fixed bearing point and in is spaced from rigidly welded to the axle body.

Such axle suspension is known from EP-A-0600198 known. Here, a tubular axle body of uniform Wall thickness such by circular openings of Guide link passed, that the axle body completely is surrounded by the respective Achskörperwandung. On the axle tube with a continuous uniform wall thickness can in Field of implementation of the axle tube through the guide link placed a two half-shells sleeve be, which is connected via plug welding the axle tube is. Such axle suspension requires considerable Installation effort, as not only the axle tube closed by the Openings of the control arm put through, but also reinforcing sleeves with four circumferential Welds have to be provided.

Object of the present invention is to provide an axle suspension of the kind set forth so that they at the same reliability and lower production requires installation effort.

This object is in an axle suspension the kind mentioned in that the guide link the axle body is not completely, but at least to 180 ° grips that the axle body by a weld with is connected to the trailing arm and the weld on all adjacent to the axle body edge of the guide link circulates.

The circumferential rim between trailing arm and axle beam Weld ensures a stress-free safe Attachment of the axle to the trailing arm. If the Guide links the axle about 180 ° grips, the need Axle body is not put through to through the guide link be, but it can, for. example, from below into the recesses inserted the guide link and welded thereto will.

In an advantageous development of the inventive idea of Axle beam tubular and has in the region of the weld seam the guide link a reinforced wall region. Thereby is the flow of material of the axle tube optimal because the Wall thickness variable voltage ratios adaptable is. Due to low stresses in the axle tube, it is thus possible also in the tensile zone and the pressure zone of the axle tube to welding, so up and down. Such welds are problematic with conventional axle tubes because of risk of tearing the Achsrohrwandung there. The increased Wall area can under each of the at least Achseinspannungen an annular region of the axle body make up. Here, the reinforced wall section either be formed by the Outer diameter of the axle body over its length essentially is constant or the inner diameter.

In another particular embodiment of the inventive concept the radius arm is substantially box-shaped and has a bottom wall and two vertical to Axle beam spaced partially embracing Sidewalls. For this case, the welding seam runs preferably at the edge of the side walls and the bottom wall of Control arm continuously around. In this way, an axle suspension with guiding arms lightweight but sufficient rigidity.

A further increase in stability can be achieved, if both sides of the respective side wall of a weld circulates.

In practice, an embodiment has proved, at which the guide links the axle about approximately 270 ° embraces.

It is of particular advantage if the at the Axle body adjacent the opening of the control arm, at which This not encircles the axle body, in the guide link, in particular in the side walls, in front of the path direction Axle body is.

In the opening of the radius arm, particularly its Sidewall, then space for components of the vehicle brake. In particular, in such a hole disc brakes find space with axially arranged brake cylinders. There is the brake cylinder perfectly protected.

Other objects, features, advantages and application possibilities the invention will be apparent from the following description of embodiments with reference to the drawing. make this All described and / or illustrated features alone or in any combination form the subject matter of the Invention also independent of their inclusion in Claims or their relationship.

Show it:<dl tsize="16"><dt>Fig. 1</dt><dd>schematically in an oblique view a the Invention having Axle in Region of the connection of the axle body with a radius arm, and</dd><dt>FIGS. 2a and 2b</dt><dd>a partially sectioned side view from the outside or from within another Embodiment of an inventive Axle.</dd></dl>

According to FIG. 1, the vehicle axle comprises a rigid tubular Axle beam 1 on. For the suspension of the vehicle axle is on each side of the median longitudinal plane at least one provided radius arm 2, which in the case illustrated substantially box-shaped with vertical side walls 5 and a bottom wall 6 is formed. The guide links 2 with its front end 9 via a bearing bush 10 at an (In FIG. 1 not shown) fixed to the chassis 11 of the bearing Vehicle articulated. At a distance behind the bearing 11 is the Radius arm 2 is rigidly welded to the axle body. 1 To this purpose surrounds the guide arm 2, ie surrounding the Side walls 5 of the guide arm 2, the axle body 1 each not completely, but only at least 180 °, namely in the way that the recesses 8 in the side walls 5, in which the axle beam 1 matches, are open downwardly. Of the Axle body 1 is of a weld seam 3 with the guide link 2. The weld seam 3 runs over the entire the axle body 1 adjacent edge 4, 4 'of the guide link 2 to. The only weld 3 serves two Peripheral sections in the region of the peripheral edges 4 of the Side walls 5 and two the former connecting axial sections in the area of ​​the axially parallel edges 4 'of Bottom wall 6 of the guide arm second

The tubular axle body 1 has in the region of the circumferential Weld 3 a reinforced wall region 7. When in Fig. 1 is illustrated embodiment for the purpose of the outer diameter the axle body 1 in the region of the weld 3 relative to the outer diameter in the remaining portions of the The axle body 1 increased while the inner diameter of about the entire length of the axle body 1 is the same. It is but also possible to the outer diameter over the length of keep tubular axle body 1 constant while the Inside diameter in the region of the weld 3 with respect to the Achskörperabschnitten other is reduced.

When a in the figures 2 and 2b embodiment shown running on the adjacent to the axle beam 1 edge 4 both a welding seam 3 on the outside as well as a Weld 3 'on the inside of the side wall 5 of the Guide link 2 to, in which case the guide link 2 to Axle body 1 encloses approximately 270 °. The to the axle beam 1 adjacent opening 12 of the guide arm 2 is in its Side walls 5 in the direction of travel in front of the axle body 1. In the Opening 12 of the side wall 5, components of the vehicle brake 13 are accommodated space-saving and protected. In the Figure 2a and 2b is also shown how the guide arm 2 on the bearing bush 10 each at a fixed chassis its bearing block 11 articulated at a distance from the axle beam 1 can.

numeral

<dl tsize="5" compact="compact"><dt>1</dt><dd>axle body</dd><dt>2</dt><dd>Trailing arm</dd><dt>3,3 '</dt><dd>Weld</dd><dt>4</dt><dd>edge</dd><dt>5</dt><dd>sidewalls</dd><dt>6</dt><dd>bottom wall</dd><dt>7</dt><dd>reinforced wall region</dd><dt>8th</dt><dd>recesses</dd><dt>9</dt><dd>front end</dd><dt>10</dt><dd>bearing bush</dd><dt>11</dt><dd>warehouse</dd><dt>12</dt><dd>opening</dd><dt>13</dt><dd>brake</dd></dl>