Chassis component with receiving portion for elastomeric bearing

Abstract

The invention relates to a chassis component having a receptacle (11) for an elastomer bearing. The receptacle (11) has a first cylindrical section (15) formed by a through-going portion (17) and a second cylindrical section (16) formed by a sleeve (18). Here, the invention is characterized in that the chassis component is composed of a first and a second sheet-metal shell (8, 9), the sleeve (18) being joined to the second sheet-metal shell (9) in a material-locking manner.

Description

Technical Field

[0001] This invention relates to a chassis component. Background Technology

[0002] The chassis is a crucial component of a motor vehicle. It is responsible for occupant comfort and makes a significant contribution to driving dynamics and safety by consistently and optimally transmitting forces generated in the contact area between the vehicle body and the tires. Here, the chassis is a complex assembly of chassis components that connect the vehicle body to the roadway.

[0003] Chassis components in motor vehicles are often connected to the vehicle body, drive unit, or other chassis components via bearings. Elastomer bearings are commonly used in the chassis of motor vehicles. These elasomer bearings are installed at connections to the vehicle body, transmission, drive unit, or chassis guide rods to decouple vibrations or noise from the differential, for example. The elasomer bearing absorbs forces through the deformation of the elastomer and is pressed into a corresponding receiving portion of the chassis component using an outer sleeve.

[0004] In the prior art, sleeves are used to receive elastomeric bearings, as disclosed in DE 10 2019 131 716 B4. The sleeve can be made from a pipe section, for example, or implemented as a slotted or rolled sleeve. The sleeve is joined to a vehicle component, or riveted or screwed onto the vehicle component as a separate component (e.g., as a forged component). To engage the sleeve in a material-locking manner, sufficient free space (e.g., for welding equipment) must be ensured, and additionally, a corresponding overhang height must be provided structurally to form the weld. In complex structural spaces, these requirements can lead to significant limitations in design.

[0005] Alternatively, the receiving portion can be implemented as a through-hole on both sides, as shown in DE 10 2016 107 155 A1 and DE10 2011 052 398 B4. The through-hole in the workpiece can be formed, for example, by stamping, drilling, rolling, or expansion processes. Therefore, the connection by means of a joint is eliminated in the through-hole. The implementation of the through-hole is technically demanding and limited by the maximum depth of the through-hole flange. This is a disadvantage compared to the sleeve solution, in which the depth of the receiving portion is not limited. Currently, in the chassis area, the through-hole depth is typically between 18 mm and 20 mm. Elastomer bearings often have a height exceeding 60 mm. Therefore, the through-hole limits the height of the elastomeric bearing, or the spacing formed between the through-holes can negatively affect the secure retention of the elastomeric bearing and cause manufacturing problems. Since the through-hole flange cannot deform to an arbitrary depth, the friction surface with the elastomeric bearing and thus the maximum effective compressive force are reduced.

[0006] DE 10 2015 200 352 A1 discloses a guide rod for a vehicle wheel suspension having a receiving portion for an elastomer. This document may be referred to as of the same type.

[0007] DE 10 2015 210 915 A1 also discloses a guide rod for a vehicle wheel suspension, which has a bearing receiving portion. The receiving portion is formed by a bushing and two opposing through portions.

[0008] Another prior art is formed by DE 10 2014 222 577 A1, which discloses a cross link with a ball joint having a press fit connection. Summary of the Invention

[0009] Therefore, based on the prior art, the present invention is based on the following objective: to provide an improved chassis component having a receiving portion for an elastomeric bearing, the chassis component ensuring a large friction surface between the elastomeric bearing and the receiving portion while requiring as few engagement operations as possible, thereby enabling the receiving portion to be implemented in a structural space with limited free space.

[0010] According to the present invention, the solution to the objective is a chassis component having a receiving portion for an elastomer bearing, as described in the present invention.

[0011] The design and modifications of the features of the chassis component having a receiving portion for the elastomeric bearing according to the present invention are also derived from the specification and drawings, and the design and modifications of said features, individually or in combination, are designed or further extend the invention in a technically advantageous manner.

[0012] Chassis components include, for example, axle brackets, longitudinal beams, crossbeams, or triangular guide rods. The receiving portion of the chassis component has a first section and a second cylindrical section, the first cylindrical section being formed by a through-hole and the second cylindrical section by a sleeve.

[0013] The chassis component according to the invention is formed from first and second sheet metal shells. These two sheet metal shells are assembled and joined together at or along their contacting sides to form the chassis component. The sheet metal shells are at least partially formed as hollow profiles. Preferably, the through-hole is a material-consistent component of the first sheet metal shell. According to the invention, the sleeve engages with the second sheet metal shell in a material-locking manner. The sleeve may, for example, be constructed as a slotted, perforated, multi-layered rolled, or longitudinally joined plate / tube.

[0014] Preferably, the through portion and the sleeve are arranged on a common central longitudinal axis. Preferably, the inner end of the sleeve is opposite to, and particularly abuts against, the flange of the through portion on the end face side. The gap distance is preferably between 0.1 mm and 10 mm, particularly preferably between 0.2 mm and 5 mm, and very particularly preferably between 0.3 mm and 3 mm.

[0015] The required structural length of the receiving portion can be adapted to the elastomeric bearing, especially by adjusting the sleeve length or the depth of the through portion. The receiving portion can also be adapted to the height of the elastomeric bearing by the distance between the end face of the sleeve and the end face of the flange.

[0016] The combination of the sleeve and the through-hole ensures a large friction surface between the receiving part and the elastomeric bearing. Simultaneously, because one of the two engagement operations can be eliminated compared to a pure sleeve solution, it allows for responsiveness to structurally critical areas. The sleeve is shorter and therefore more cost-effective than a pure sleeve solution. The through-hole can be implemented at a depth that is less demanding in terms of machining technology and more cost-effective. The combination of the sleeve and the through-hole can be used for receiving parts of various chassis components, particularly for axle brackets, triangular guides, and cross guides.

[0017] In an advantageous embodiment of the receiving portion, the sleeve fully engages with the second plate housing in the area of ​​the opening, particularly by welding. Preferably, the opening is circular or elliptical. Alternatively, the sleeve may also engage with the second plate housing in a material-locking manner in the area of ​​a partially circular opening (e.g., a semicircle), particularly by weld and preferably at the end on the side of the crossbar. The opening of the second plate housing may be provided in a recess such that the outer end of the engaged sleeve does not protrude beyond the surface of the second plate housing, or in other words, the outer end of the engaged sleeve is flush with the surface of the second plate housing. Here, the surface of the second plate housing should be understood as the section surrounding the elastomeric bearing. Nevertheless, the second plate housing may also be recessed in a section at least 200 mm away from the elastomeric bearing (e.g., at the opposite end of the chassis component).

[0018] In another embodiment of the receiving portion, the inner end of the sleeve and the flange of the through portion may partially overlap and, in particular, be connected by force-locking and / or form-locking. The receiving portion can be adapted to the height of the elastomeric bearing by means of the height of the overlap between the sleeve and the flange.

[0019] Preferably, sheet metal made of steel alloy is suitable as the material for the chassis component. Preferably, the sleeve is made of a different material than the sheet metal outer shell, but preferably also of steel. The sheet metal outer shell may also have customized properties, such as in terms of mechanical properties or wall thickness. Preferably, the chassis component is painted. The chassis component may have an anti-corrosion protective coating. Attached Figure Description

[0020] The invention will then be described in more detail with reference to the accompanying drawings. In the drawings:

[0021] Figure 1 A first embodiment of the chassis component as part of the axle bracket according to the invention is shown in perspective view;

[0022] Figure 2 A perspective front view of a first embodiment of the receiving part according to the present invention is shown;

[0023] Figure 3 A front view of the second embodiment of the receiving section is shown;

[0024] Figure 4 A front view of the third embodiment of the receiving section is shown;

[0025] Figure 5 A front view of the fourth embodiment of the receiving part is shown and

[0026] Figure 6 A perspective front view of the fifth embodiment of the receiving section is shown. Detailed Implementation

[0027] Figure 1 The diagram shows a chassis component consisting of two longitudinal beams 1 and 2, which are part of the axle bracket 3. The longitudinal beams 1 and 2 are interconnected by two crossbeams 4 and 5.

[0028] The chassis component is formed from bases 6 and 7. The bases 6 and 7 are composed of two sheet metal shells 8 and 9. The sheet metal shells 8 and 9 are formed by extrusion technology and are arranged overlappingly in the drawing (except for the overlapping joint areas).

[0029] A receiving portion 11 according to the present invention is provided at the rear end 10 (in the direction of travel of the motor vehicle) of the bases 6 and 7. A bearing receiving portion 13 conforming to the prior art is provided at the front end 12. The bearing receiving portion 13 is located at... Figure 1In the embodiments described, a long sleeve 14 is implemented according to the prior art. The long sleeve 14 engages with the sheet metal outer shells 8 and 9 of the substrates 6 and 7. According to the invention, the receiving portion 11 has a first cylindrical section 15 and a second cylindrical section 16. The first cylindrical section 15 is formed through a through-hole 17 in the first sheet metal outer shell 8, and the second cylindrical section 16 is formed through a sleeve 18. The sleeve 18 of the second cylindrical section 16 engages with the second sheet metal outer shell 9.

[0030] Figure 2 A detailed view of a receiving portion 11 for an elastomeric bearing according to the present invention is shown. The through portion 17 and the sleeve 18 are disposed on a common central longitudinal axis 19. The inner end 20 of the sleeve 18 abuts against the flange 21 of the through portion 17 on its end face side. The height h1 of the receiving portion 11 is adapted to the elastomeric bearing by the height h2 of the flange 21 of the through portion 17 and the height h3 of the sleeve 18.

[0031] Figures 3 to 6 Different implementation variations of the receiving portions 22, 23, 24, and 25 for the elastomeric bearings are shown.

[0032] Figure 3 A second embodiment of the invention is shown in the form of a receiving portion 22, in which the inner end 20 of the sleeve 18 partially overlaps with the flange 21 of the through portion 17 and is connected to each other by force-locking. The height h4 of the receiving portion 22 is adapted to the elastomeric bearing by the height h5 of the overlapping portion.

[0033] Figure 4 A third embodiment of the invention is shown in the form of a receiving portion 23, in which the inner end 20 of the sleeve 18 and the flange 21 of the through portion 17 are opposite each other on the end face side. The height h6 of the receiving portion 23 is adapted to the elastomeric bearing by the gap distance h7 between the inner end 20 of the sleeve 18 and the flange 21 of the through portion 17.

[0034] As in Figure 5 As shown, in the fourth embodiment of the invention in the form of a receiving portion 24, the opening 26 of the second plate housing 9 is provided in the recess 27, such that the outer end portion 28 of the sleeve 18 being engaged does not protrude beyond the surface 29 of the second plate housing 9.

[0035] Figure 6 The fifth embodiment of the invention is shown in the form of a receiving part 25, in which the sleeve 18 is joined to the second plate housing 9 in a material-locking manner by a semi-circular weld in the region of the semi-circular opening 30 of the second plate housing 9.

[0036] List of reference numerals

[0037] 1 - Longitudinal Beam

[0038] 2 - Longitudinal Beam

[0039] 3 - Axle Bracket

[0040] 4 - Crossbeam

[0041] 5 - Crossbeam

[0042] 6 - Matrix

[0043] 7 - Matrix

[0044] 8 - Sheet metal casing

[0045] 9 - Sheet metal casing

[0046] 10 - Front end of the substrate

[0047] 11 - Reception Department

[0048] 12 - The rear end of the substrate

[0049] 13 - Bearing receiving section

[0050] 14 - Long sleeve

[0051] 15 - First cylindrical section

[0052] 16 - Second cylindrical section

[0053] 17 - Through section

[0054] 18 - Sleeve

[0055] 19 - Central longitudinal axis

[0056] 20 - The built-in end of the sleeve

[0057] 21 - Flange

[0058] 22 - Reception Department

[0059] 23 - Reception Department

[0060] 24 - Reception Department

[0061] 25 - Reception Department

[0062] 26 - Openings in the outer casing of the sheet metal

[0063] 27 - Depression

[0064] 28 - Outer end of the sleeve

[0065] 29 - Surface of the sheet metal casing

[0066] 30 - Partial circular opening on the outer shell of the sheet metal

Claims

1. A chassis component having a receiving portion (11, 22, 23, 24, 25) for an elastomeric bearing, said receiving portion (11, 22, 23, 24, 25) having a first cylindrical section (15) and a second cylindrical section (16), the first cylindrical section (15) being formed by a through portion (17) and the second cylindrical section (16) being formed by a sleeve (18), characterized in that, The chassis component is composed of a first plate shell (8) and a second plate shell (9). The sleeve (18) is engaged with the second plate shell (9) by material locking. The through portion (17) extends from the first plate shell (8) toward the sleeve (18) and the second plate shell (9). The through portion (17) and the sleeve (18) are arranged on a common central longitudinal axis (19). The inner end of the sleeve and the flange of the through portion are opposite to each other on the end face side. The height (h6) of the receiving portion can be adapted to the elastomeric bearing by the gap distance (h7) between the inner end (20) of the sleeve (18) and the flange (21) of the through portion (17).

2. The chassis component according to claim 1, characterized in that, The through portion (17) is a component of the same material as the first plate shell (8).

3. The chassis component according to claim 1, characterized in that, The sleeve (18) engages with the second plate housing (9) in the region of the opening (26) of the second plate housing (9).

4. The chassis component according to claim 1, characterized in that, The sleeve (18) engages with the second plate housing (9) in the region of the partially circular opening (30) of the second plate housing (9).

5. The chassis component according to claim 3 or 4, characterized in that, The opening (26) of the second plate shell (9) is provided in the recess (27) such that the outer end (28) of the sleeve (18) being joined does not protrude beyond the surface (29) of the second plate shell (9).

6. The chassis component according to claim 1 or 2, characterized in that, The chassis component is a guide rod, axle frame, or engine frame of a motor vehicle, or is part of the guide rod, axle frame, or engine frame of the motor vehicle.

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