Arrangement of a steering link of a vehicle axle on a connecting bracket

Abstract

The invention relates to an arrangement of a control arm (100) of a vehicle axle on a connecting bracket (110), wherein the control arm (100) has a bearing core (101) with a bearing eye (102) which is designed as a through bore, wherein the connecting bracket (110) has a bore (111) which corresponds to the bearing eye (102), and wherein the bore (111) of the connecting bracket (110) and the bearing eye (102) are arranged such that a fastening screw (120) is passed through them, which is secured by means of a nut (121), wherein the bearing eye (102) is triangular in shape.

Description

[0001] The present invention relates to an arrangement of a link of a vehicle axle on a connecting lug, wherein the link has a bearing core with a bearing eye which is designed as a through bore, wherein the connecting lug has a bore which corresponds to the bearing eye, and wherein the bore of the connecting lug and the bearing eye are arranged such that a fastening screw is passed through them, which is secured by means of a nut.

[0002] Vehicle axles, such as a double wishbone rear axle, must have specific axle alignment values ​​(toe-in and camber) within predefined tolerance ranges when delivered. This is often achieved through axle pre-setting during axle assembly, followed by verification and, if necessary, readjustment in a factory test area at the end of the assembly line.

[0003] The generic document DE 10 2014 202 740 A1 discloses the features of the preamble of claim 1.

[0004] Depending on the tolerances of the vehicle axle components and the camber tolerance specification, it would be desirable to offer a concept that doesn't require complex axle alignment. The challenge lies in minimizing individual tolerances and other tolerance-related influencing parameters during the assembly process.

[0005] In this context, the screw connections of the upper and lower handlebar levels represent a significant influencing factor when they are mounted with a fastening screw and a nut in connecting tabs with a through hole.

[0006] Fig. Figure 1 shows an example of an arrangement of an upper control arm 100' of a vehicle axle on a connecting bracket 110', where the mechanical connection is achieved by means of a screw connection. The upper control arm 100' has a bearing core 101' with a circular bearing eye 102'. A circular bore 111' is formed in the connecting bracket 110', the diameter of which corresponds to the diameter of the bearing eye 102', which is designed as a through-hole. During assembly, the upper control arm 100' is positioned so that the bearing eye 102' is aligned with the bore 111'. A fastening screw 120' is then passed through the bore 111' of the connecting tab 110' and through the bearing eye 102' of the bearing core 101' of the upper control arm 100' and secured by means of a nut 121'.

[0007] With this type of connection of the upper control arm 100' to the connecting lug 110', the clearance fits between the fastening bolt 120' and the bore 111' of the connecting lug 110', as well as between the fastening bolt 120' and the bearing eye 102' of the bearing core 101', are particularly significant and can lead to relatively large positional deviations in the bolted connection. This is because the ideal condition, in which the elements fastening bolt 120', bore 111', and bearing eye 102' are arranged exactly coaxially, is never achieved in practice. Instead, the fastening bolt 120' will always be in contact with its surrounding components.

[0008] The object of the present invention is to further develop an arrangement of a steering link of a vehicle axle on a connecting lug of the type mentioned above in such a way that the screw connection is improved compared to the prior art.

[0009] The solution to this problem is provided by a generic arrangement of a steering link of a vehicle axle on a connecting lug with the features of the characterizing part of claim 1. The dependent claims relate to advantageous further developments of the invention.

[0010] According to the invention, it is proposed that the bearing eye be triangular in shape. This advantageously ensures that the tolerances in the bolted connection caused by the hole clearance of the connecting tab and the bearing eye can be reliably minimized. This also enables the implementation of a concept in which complex axis adjustment, particularly with regard to camber, is no longer necessary.

[0011] In one embodiment, it is proposed that the bearing eye - a base leg, - a first corner area opposite the base leg, - a second corner area and a third corner area, between which the base leg extends, - a first side leg extending between the first corner area and the second corner area, as well as - a second side leg extending between the first corner area and the third corner area, exhibits.

[0012] In an advantageous embodiment, it is proposed that the corner areas of the bearing eye are rounded.

[0013] It is possible that the first and second legs of the bearing eye have identical lengths. In this case, the bearing eye geometrically has the basic shape of an isosceles triangle. Alternatively, it is also possible that the base leg, the first leg, and the second leg of the bearing eye have identical lengths. Then the bearing eye geometrically has the basic shape of an equilateral triangle.

[0014] In one embodiment, it is proposed that the bore of the connecting tab be circular in shape.

[0015] In a particularly advantageous embodiment, the bore of the connecting tab is triangular in shape.

[0016] In one embodiment, it is proposed that the bore - a base leg, - a first corner area opposite the base leg, - a second corner area and a third corner area, between which the base leg extends, - a first side leg extending between the first corner area and the second corner area, as well as - a second side leg extending between the first corner area and the third corner area, exhibits.

[0017] In an advantageous embodiment, the corner areas of the bore are rounded.

[0018] In a particularly advantageous embodiment, the triangularly shaped bearing eye and the triangularly shaped bore can be arranged complementarily to each other. In other words, the triangularly shaped bearing eye and the triangular bore are oriented oppositely to each other, so that the base leg of the bearing eye interacts with the first corner region of the bore of the connecting lug, and vice versa. Such an alignment of the triangular bearing eye and the triangular bore advantageously results, during assembly under radial force, in the bolted connection self-centering and tolerances due to backlash can be eliminated or at least minimized.

[0019] In one embodiment, the first and second sides of the bore have identical leg lengths. Thus, the bore geometrically has the basic shape of an isosceles triangle. In an alternative embodiment, the base leg, the first side, and the second side of the bore have identical leg lengths. Then, the bore geometrically has the basic shape of an equilateral triangle.

[0020] Further features and advantages of the present invention will become clear from the following description of a preferred embodiment with reference to the accompanying figures. Fig. 1 An expanded representation showing a mechanical connection of an upper control arm of a vehicle axle to a connecting bracket by means of a screw connection according to the prior art, Fig. 2 an enlarged view of a bearing core of a steering linkage according to an embodiment of the invention, Fig. 3 an enlarged view showing a connecting tab according to an embodiment of the invention with a bore that corresponds to the bearing eye, Fig. 4 An enlarged illustration showing the bearing eye after the production of a screw connection with the connecting tab.

[0021] With reference to Fig. Figure 2 shows an enlarged section of a control arm 100 of a vehicle axle of a motor vehicle. This control arm 100 could, in particular, be an upper control arm of the vehicle axle.

[0022] The control arm 100 has a bearing core 101 with a triangularly shaped bearing eye 102, which is designed as a through-hole. The bearing eye 102 comprises a base leg 103 and a first corner region 104, which is opposite the base leg 103. Furthermore, the bearing eye 102 has a second corner region 105 and a third corner region 106, between which the base leg 103 extends. In addition, the bearing eye 102 comprises a first side leg 107, which extends between the first corner region 104 and the second corner region 105, and a second side leg 108, which extends between the first corner region 104 and the third corner region 106. As shown in the illustration. Fig. As can be seen in Figure 2, all three corner areas 104, 105, 106 of the bearing eye 102 are rounded.

[0023] In the embodiment shown here, the base leg 103, the first side leg 107, and the second side leg 108 of the bearing eye 102 have identical leg lengths. Thus, the bearing eye 102 geometrically has the basic shape of an equilateral triangle.

[0024] In Fig. Figure 3 shows a connecting tab 110 to which the handlebar 100 is mechanically connected by means of a screw connection during assembly. A triangular bore 111 is formed in the connecting tab 110. The bore 111 comprises a base leg 113 and a first corner region 114, which is opposite the base leg 113. Furthermore, the bore 111 has a second corner region 115 and a third corner region 116, between which the base leg 113 extends. In addition, the bore 111 comprises a first side leg 117, which extends between the first corner region 114 and the second corner region 115, and a second side leg 118, which extends between the first corner region 114 and the third corner region 116. As shown in the illustration according to Fig. As can be seen from figure 3, all three corner areas 114, 115, 116 of the bore 111 are also rounded.

[0025] In the embodiment shown here, the base leg 113, the first side leg 117, and the second side leg 118 of the bore 111 have identical leg lengths. Thus, the bore 111 geometrically has the basic shape of an equilateral triangle.

[0026] From the representations according to Fig. 2 and Fig. It follows from section 3 that the bearing eye 102 of the bearing core 101 of the link 100 and the bore 111 of the connecting lug 110 are arranged complementarily to each other. In other words, this means that the triangularly shaped bearing eye 102 and the triangular bore 111 are oriented oppositely to each other, so that the base leg 103 of the bearing eye 102 interacts with the first corner region 114 of the bore 111 of the connecting lug 110 and the base leg 113 of the bore 111 interacts with the first corner region 104 of the bearing eye 102.

[0027] During assembly, the handlebar 100 and the connecting bracket 110 are first positioned and aligned so that the bearing eye 102 is flush with the bore 111. A fastening screw 120 is then inserted through the bore 111 of the connecting bracket 110 and through the bearing eye 102 of the bearing core 101 of the handlebar 100 and secured with a nut 121.

[0028] The arrangement of the link 100 on the connecting tab shown here, in which the triangular bearing eye 102 of the bearing core 101 of the link 100 and the triangular bore 111 of the connecting tab 110 are oriented in opposite directions to each other, leads to the following during assembly under the influence of a radial force F RThis ensures that the screw connection advantageously self-centers, thus avoiding or at least minimizing tolerances that occur due to a hole play of the bearing eye 102 of the handle 100 and the bore 111 of the connecting tab 110.

Claims

[1] Arrangement of a link (100) of a vehicle axle on a connecting bracket (110), wherein the link (100) has a bearing core (101) with a bearing eye (102) which is designed as a through-hole, wherein the connecting bracket (110) has a bore (111) which corresponds to the bearing eye (102), and wherein the bore (111) of the connecting bracket (110) and the bearing eye (102) are arranged such that a fastening screw (120) passes through them and is secured by means of a nut (121), characterized by , that the bearing eye (102) is triangular in shape. [2] Arrangement according to claim 1, characterized by , that the storage eye (102) - a base leg (103), - a first corner area (104) opposite the base leg (103), - a second corner area (105) and a third corner area (106), between which the base leg (103) extends, - a first side leg (107) extending between the first corner area (104) and the second corner area (105), as well as - has a second side leg (108) that extends between the first corner area (104) and the third corner area (106). [3] Arrangement according to claim 2, characterized by , that the corner areas (104, 105, 106) of the bearing eye (102) are rounded. [4] Arrangement according to one of claims 2 or 3, characterized by , that the first lateral leg (107) and the second lateral leg (108) of the bearing eye (2) have identical leg lengths or that the base leg (103), the first lateral leg (107) and the second lateral leg (108) of the bearing eye (102) have identical leg lengths. [5] Arrangement according to any one of claims 1 to 4, characterized by , that the bore (111) of the connecting tab (110) is circular in shape. [6] Arrangement according to any one of claims 1 to 4, characterized by , that the bore (111) of the connecting tab (110) is triangular in shape. [7] Arrangement according to claim 6, characterized by , that the borehole (111) - a base leg (113), - a first corner area (114) opposite the base leg (113), - a second corner area (115) and a third corner area (116), between which the base leg (113) extends, as well as - a first side leg (117) extending between the first corner area (114) and the second corner area (115), as well as - a second side leg (118) extending between the first corner area (114) and the third corner area (116), exhibits. [8] Arrangement according to claim 7, characterized by , that the corner areas (114, 115, 116) of the bore (111) are rounded. [9] Arrangement according to any one of claims 6 to 8, characterized by, that the triangularly shaped bearing eye (102) and the triangular bore (111) are arranged complementarily to each other. [10] Arrangement according to any one of claims 7 to 9 characterized by , that the first side leg (117) and the second side leg (118) of the bore (111) have identical leg lengths or that the base leg (113), the first side leg (117) and the second side leg (118) of the bore (111) have identical leg lengths.

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