Chassis component with a mount for an elastomer bearing

Abstract

Chassis component with a receptacle (11, 22, 23, 24, 25) for an elastomer bearing, wherein the receptacle (11, 22, 23, 24, 25) has a first cylinder section (15) and a second cylinder section (16), wherein the first cylinder section (15) is formed by a passage (17) and the second cylinder section (16) by a sleeve (18), characterized in that the chassis component is formed from a first and a second sheet metal shell (8, 9), wherein the sleeve (18) is joined to the second sheet metal shell (9) in a material-to-material manner.

Description

[0001] The invention relates to a chassis component according to the features in the preamble of claim 1.

[0002] The chassis is a critical component of a motor vehicle. It is responsible for occupant comfort and makes a significant contribution to driving dynamics and safety by ensuring that the forces generated in the contact zones between the road surface and tires are always optimally transmitted. The chassis is a complex assembly of chassis components that serve to connect the body to the road surface.

[0003] In motor vehicles, chassis components are often connected to the body, drivetrain components, or other chassis components via bearings. Elastomer bearings are typically used in vehicle chassis. They are installed at the connection points to the vehicle body, transmission, drive unit, or chassis control arms, for example, to decouple vibrations or noise from the differential. Elastomer bearings can absorb forces through deformation of the elastomer and are pressed with the outer sleeve into a suitably prepared mount in the chassis component.

[0004] In the prior art, sleeves are used to accommodate the elastomer bearings, as disclosed in DE 10 2019 131 716 B4. The sleeves can, for example, be made from a single pipe section or be designed as a slotted or rolled sleeve. The sleeves are joined to the vehicle component or riveted or screwed to the vehicle component as separate components, for example as a forged component. To join the sleeves firmly, sufficient clearance must be ensured, for example for a welding unit, and a corresponding overhang must also be provided for the formation of the weld seam. In complex installation spaces, this requirement can lead to significant design limitations.

[0005] Alternatively, the mount can be designed as a double-sided through-hole, as shown in DE 10 2016 107 155 A1 and DE 10 2011 052 398 B4. A through-hole in a workpiece can be formed, for example, by a punching, drilling, rolling, or spreading process. With a through-hole, the connection by joining is therefore not necessary. The design of the through-hole is demanding in terms of production technology and is limited to a maximum depth of the through-hole collar. This is a disadvantage compared to the sleeve solution, where the depth of the mount is not restricted. In the chassis sector, through-hole depths between 18 mm and 20 mm are common today. Elastomer bearings often have a height of over 60 mm. The through-hole thus limits the height of the elastomer bearing, or a gap arises between the through-holes, which can negatively affect the secure hold of the elastomer bearings and lead to production problems.Because the pull-through collar cannot be deformed to any depth, the friction surface to the elastomer bearing and thus the maximum effective extrusion force is reduced.

[0006] DE 10 2015 200 352 A1 discloses a control arm for a vehicle wheel suspension with a mount for an elastomer body. This publication can be considered generic.

[0007] DE 10 2015 210 915 A1 also discloses a control arm for a vehicle wheel suspension with a bearing support. The support is formed by a bushing and two opposing threads.

[0008] Further prior art is represented by DE 10 2014 222 577 A1, which discloses a wishbone with a ball joint in a press-fit connection.

[0009] The invention is therefore based on the prior art and is based on the object of creating a chassis component with an improved mount for an elastomer bearing, which ensures a high friction surface between the elastomer bearing and the mount and at the same time requires as few joining operations as possible, so that the mount can also be implemented in installation spaces with limited free space.

[0010] The solution to this problem according to the invention consists in a chassis component with a holder for an elastomer bearing according to claim 1.

[0011] Advantageous embodiments and further developments of the chassis component according to the invention with a receptacle for an elastomer bearing are the subject of the dependent claims.

[0012] Embodiments and modifications of features of the chassis component according to the invention with a receptacle for an elastomer bearing, which individually or in combination design or further develop the invention in a technically advantageous manner, also emerge from the description and the attached drawings.

[0013] A chassis component can be, for example, an axle support, longitudinal member, cross member, or wishbone. The chassis component mount has a first and a second cylinder section, with the first cylinder section being formed by a passage and the second cylinder section by a sleeve.

[0014] The chassis component according to the invention is formed from a first and a second sheet metal shell. The two sheet metal shells are assembled to form the chassis component and joined at or along the contacting legs. The sheet metal shells form a hollow profile, at least in places. The passage is preferably a uniform component of a first sheet metal shell. According to the invention, the sleeve is joined to a second sheet metal shell in a material-to-material manner. The sleeve can be designed, for example, as a slotted, perforated, multi-layer rolled, or longitudinally joined sheet metal / tube.

[0015] The passage and the sleeve are preferably arranged on a common central longitudinal axis. The inner end of the sleeve and the collar of the passage are preferably opposite one another, in particular they are in contact. The gap distance is preferably between 0.1 and 10 mm, more preferably between 0.2 and 5 mm, and most preferably between 0.3 and 3 mm.

[0016] The required length of the mount can be adapted to the elastomer bearing, particularly by adjusting the sleeve length or the depth of the groove. Furthermore, the mount can be adapted to the height of the elastomer bearing by adjusting the distance between the end faces of the sleeve and the collar.

[0017] The combination of sleeve and through-hole ensures a high friction surface between the mount and the elastomer bearing. At the same time, space-critical areas can be addressed, as one of the two joining operations can be eliminated compared to a sleeve-only solution. The sleeve is shorter and therefore more cost-effective than a sleeve-only solution. The through-hole can be made at a depth that is not critical from a manufacturing perspective and is cost-effective. The combination of sleeve and through-hole can be used for many chassis component mounts, particularly for axle carriers and wishbones and control arms.

[0018] In an advantageous embodiment of the receptacle, the sleeve is joined, in particular welded, to the second sheet metal shell over its entire circumference in the region of an opening in the second sheet metal shell. The opening is preferably circular or oval. Alternatively, the sleeve can also be joined to the second sheet metal shell in a material-to-material manner in the region of a partially circular opening in the second sheet metal shell, for example a semicircle, in particular by means of a weld seam and preferably at the end of a wishbone leg. The opening in the second sheet metal shell can be arranged in a recess so that the outer end of the joined sleeve does not protrude beyond the surface of the second sheet metal shell, or is flush with it. The surface of the second sheet metal shell is understood to mean the section around the elastomer bearing.Notwithstanding this, the second sheet metal shell can also be recessed in a section at least 200 mm away from the elastomer bearing, for example at an opposite end of the chassis component.

[0019] In a further embodiment of the receptacle, the inner end of the sleeve and the collar of the passage can overlap in some areas and, in particular, be connected in a force-fitting and / or form-fitting manner. The receptacle can be adapted to the height of the elastomer bearing by the height of the overlap between the sleeve and the collar.

[0020] Sheet metal made of a steel alloy is preferably used as the material for the chassis component. The sleeve is preferably made of a different material from the sheet metal shells, but preferably also a steel material. The sheet metal shells can also have customized properties, for example, with regard to mechanical characteristics or wall thicknesses. The chassis component is preferably painted. The chassis component can have an anti-corrosion coating.

[0021] The invention is described in more detail below with reference to the drawings. They show: Fig. 1 shows a first embodiment of a chassis component according to the invention as part of an axle carrier in a perspective view; Fig. 2 a perspective front view of a first embodiment of a receptacle according to the invention; Fig. 3 a front view of a second embodiment of the receptacle; Fig. 4 a front view of a third embodiment of the receptacle; Fig. 5 a front view of a fourth embodiment of the receptacle and Fig. 6 a perspective view of a fifth embodiment of the receptacle.

[0022] The Fig. Figure 1 shows chassis components in the form of two longitudinal members 1, 2, which are part of an axle support 3. The longitudinal members 1, 2 are connected to each other by two cross members 4, 5.

[0023] The chassis components are formed from a base body 6, 7. The base body 6, 7 is composed of two sheet metal shells 8, 9. The sheet metal shells 8, 9 are press-formed and arranged one above the other in the image plane, with the exception of overlapping joining areas.

[0024] At a rear end 10 of the base body 6, 7 in the direction of travel of the motor vehicle, a receptacle 11 according to the invention is arranged. At a front end 12, a bearing receptacle 13 corresponding to the prior art is provided. The bearing receptacles 13 are in the exemplary embodiment in Fig. 1, according to the prior art, are designed as long sleeves 14. The long sleeves 14 are joined to the sheet metal shells 8, 9 of the base body 6, 7. According to the invention, the receptacles 11 have a first cylindrical section 15 and a second cylindrical section 16, wherein the first cylindrical section 15 is formed by a passage 17 of the first sheet metal shell 8 and the second cylindrical section 16 is formed by a sleeve 18. The sleeve 18 of the second cylindrical section 16 is joined to the second sheet metal shell 9.

[0025] The Fig. Figure 2 shows a detailed view of a receptacle 11 according to the invention for an elastomer bearing. The through-hole 17 and the sleeve 18 are arranged on a common central longitudinal axis 19. The inner end 20 of the sleeve 18 and the collar 21 of the through-hole 17 abut each other at the front. The height h1 of the receptacle 11 can be adapted to the elastomer bearing by the height h2 of the collar 21 of the through-hole 17 and the height h3 of the sleeve 18.

[0026] The Fig. 3 to 6 show different design variants of the holder 22, 23, 24, 25 for the elastomer bearing.

[0027] Fig. Figure 3 shows a second embodiment of the invention in the form of the receptacle 22, in which the inner end 20 of the sleeve 18 and the collar 21 of the passage 17 overlap in some areas and are connected to each other in a force-locking manner. The height h4 of the receptacle 22 can be adapted to the elastomer bearing by the height h5 of the overlap.

[0028] Fig. Figure 4 shows a third embodiment of the invention in the form of the receptacle 23, in which the inner end 20 of the sleeve 18 and the collar 21 of the passage 17 are opposite each other. The height h6 of the receptacle 23 can be adapted to the elastomer bearing via the gap distance h7 between the inner end 20 of the sleeve 18 and the collar 21 of the passage 17.

[0029] As in Fig. 5, in a fourth embodiment of the invention in the form of the receptacle 24, the opening 26 of the second sheet metal shell 9 can be arranged in a recess 27 so that the outer end 28 of the joined sleeve 18 does not protrude beyond the surface 29 of the second sheet metal shell 9.

[0030] Fig. 6 shows a fifth embodiment of the invention in the form of the receptacle 25, in which the sleeve 18 is integrally joined to the second sheet metal shell 9 in the region of a semicircular opening 30 of the second sheet metal shell 9 with a semicircular weld seam. Reference symbols: 1 longitudinal member 2 longitudinal members 3 axle supports 4 cross members 5 cross members 6 basic bodies 7 basic bodies 8 tin trays 9 tin tray 10 front end of the base body 11 recording 12 rear end of the base body 13 Bearing recording 14 long sleeve 15 first cylinder section 16 second cylinder section 17 Draft 18 sleeve 19 Central longitudinal axis 20 inner end of the sleeve 21 collar 22 recording 23 recording 24 recording 25 recordings 26 Opening of the sheet metal tray 27 Deepening 28 outer end of the sleeve 29 Surface of the sheet metal tray 30 part-circular opening of the sheet metal shell

Claims

[1] Chassis component with a receptacle (11, 22, 23, 24, 25) for an elastomer bearing, wherein the receptacle (11, 22, 23, 24, 25) has a first cylinder section (15) and a second cylinder section (16), wherein the first cylinder section (15) is formed by a passage (17) and the second cylinder section (16) by a sleeve (18), characterized by that the chassis component is formed from a first and a second sheet metal shell (8, 9), wherein the sleeve (18) is joined to the second sheet metal shell (9) in a material-to-material manner. [2] Chassis component according to claim 1, characterized by that the passage (17) is a uniform material component of a first sheet metal shell (8). [3] Chassis component according to claim 1 or 2, characterized by that the sleeve (18) is joined to the second sheet metal shell (9) in the region of an opening (26) of the second sheet metal shell (9). [4] Chassis component according to claim 1 or 2, characterized bythat the sleeve (18) is joined to the second sheet metal shell (9) in the region of a part-circular opening (30) of the second sheet metal shell (9). [5] Chassis component according to claim 3 or 4, characterized by that the opening (26) of the second sheet metal shell (9) is arranged in a recess (27) so that the outer end (28) of the joined sleeve (18) does not protrude beyond the surface (29) of the second sheet metal shell (9). [6] Chassis component according to one of claims 1 to 5, characterized by that the passage (17) and the sleeve (18) are arranged on a common central longitudinal axis (19). [7] Chassis component according to one of claims 1 to 6, characterized by that the inner end (20) of the sleeve (18) and a collar (21) of the passage (17) overlap in some areas and are connected in a force-fitting and / or form-fitting manner. [8] Chassis component according to one of claims 1 to 7, characterized bythat the sleeve (18) and the collar (21) of the passage (17) are opposite each other at the end. [9] Chassis component according to one of claims 1 to 8, characterized by that the passage (17) protrudes from the first sheet metal shell (8) in the direction of the sleeve (18) and the second sheet metal shell (9). [10] Chassis component according to one of claims 1 to 9, characterized by that the chassis component is the control arm, axle frame or engine frame of a motor vehicle or a part thereof

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