KR20230143949A - Attachment arrangement for attaching a vibration damper to a wheel carrier of an automobile - Google Patents

Abstract

The present invention relates to an attachment arrangement (3) for attaching a vibration damper (1) to a wheel carrier of an automobile. This attachment arrangement comprises at least two separate attachment parts (4; 5). Each of the attachment parts (4; 5) includes: a connection section (6) formed in a shell shape defining a longitudinal extension axis (L), for connecting a damper tube (2) of the vibration damper (1) and the attachment arrangement (3); and an attachment section (10) projecting radially from the connection section (6) for attachment to the wheel carrier of the automobile. In the present case, an inner contour of the connection section (6) matches an outer contour of the damper tube (2) of the vibration damper (1).

Description

Attachment arrangement for attaching a vibration damper to a wheel carrier of an automobile {ATTACHMENT ARRANGEMENT FOR ATTACHING A VIBRATION DAMPER TO A WHEEL CARRIER OF AN AUTOMOBILE}

The invention relates to an attachment arrangement for attaching a vibration damper to a wheel carrier of a motor vehicle, having the features of the preamble of claim 1.

Attachment arrangements for attaching a vibration damper to a wheel carrier of a motor vehicle are well known from the prior art. Attachment arrangements of this type often include an attachment interface for attachment to the wheel carrier and a receiving section for receiving a vibration damper.

For example, publication WO 2009/110256 A1 describes an attachment arrangement with a c-shaped basic body and a pair of attachment elements arranged on the basic body for attachment to a vibration damper of a motor vehicle. . This attachment arrangement is welded to the damper cylinder of the vibration damper in such a way that the edges of the c-shaped basic body abut each other in the same plane. Additionally, the attachment arrangement described in WO 2009/110256 A1 has a complex configuration that requires a complex molding process, so the manufacturing cost of the attachment arrangement is relatively high.

The object of the present invention is to provide an attachment arrangement for attaching a vibration damper to a wheel carrier of a motor vehicle, characterized by inexpensive production, improved resistance and extended service life. This problem is solved by means of an attachment arrangement for attaching a vibration damper to a wheel carrier of a motor vehicle, having the features of claim 1. Preferred and/or advantageous embodiments of the invention are set out in the dependent claims, the description below and the accompanying drawings.

An attachment arrangement for attaching a vibration damper to a wheel carrier of an automobile is proposed. These vehicles are preferably passenger cars or commercial vehicles.

The attachment arrangement includes at least two separate attachment parts, or in other words the attachment arrangement is formed from at least two separate attachment parts. Each attachment part includes a connection section defining a longitudinally extending axis for connecting the attachment arrangement with the damper tube of the vibration damper; and an attachment section projecting radially from the connection section, used to attach the attachment arrangement to the wheel carrier of the automobile. The connecting sections are formed in a shell shape, so that the inner contour of the connecting section matches the outer contour of the damper tube of the vibration damper. Additionally, each connecting section includes a first axial section end and a second axial section end, and a jacket surface connecting the two axial section ends.

The attachment arrangement formed in this way is characterized by high robustness and very low manufacturing costs. Attachment parts can be stamped and formed in a simple way from narrow sheet metal strips. The simple construction of each attachment part does not require complex molding devices for manufacturing and likewise enables very easy molding, which keeps manufacturing costs low.

Generally, the two axial section ends of the connecting section of the attachment arrangement are formed at right angles to the longitudinal extension axis. In this case, the attachment arrangement forms a materially coupled connection, for example welded, with the damper tube of the vibration damper at least along the end of the first axial section. To further stabilize the connection, an additional weld seam is positioned in the area of the bottom of the damper tube to inseparably connect the damper tube to the end of the second section of the attachment arrangement.

However, when the lateral forces acting on the vibration damper during operation are too large, the damper tube may deform and/or break at the weld seam arranged at the end of the first axial section of the connecting section spaced apart from the bottom region of the damper tube. You can. In order to prevent this situation and to form a much more reliable connection between the connection section of the attachment arrangement and the damper tube, according to one preferred embodiment, the end of the first axial section of the connection section is inclined or along a longitudinally extending axis. It is provided to form an angle with the longitudinal extension axis having an angle greater or less than 90 degrees. Through this, the connection of the damper tube and the attachment arrangement can be performed more reliably. By this, the weld seam at the end of the first axial section of the connecting section is extended much further, and the load of the lateral forces is thus distributed over a much longer weld seam, so that the risk of damage to the damper tube is greatly reduced or minimized, or even eliminated. It can be.

In order to support particularly large lateral forces without damaging the damper tube, it can be advantageously provided to shape the first axial section end with additional support sections, for example at an angle to each other. It may be formed of at least two inclined sections extending to form an angle, the angle of which may be greater than 90°. In this case, each inclined section may form an angle with the longitudinal extension axis, and the angle of this angle may be less or more than 90 degrees.

In order to reduce the weight of the attachment arrangement, it is preferably provided that the connection section comprises a recess that reduces the jacket surface, formed on a radially opposite side of the attachment section.

If the second axial section end and/or the attachment section are formed to be bent, a greater rigidity of the attachment arrangement is achieved, which further stabilizes the connection of the vibration damper to the wheel carrier of the motor vehicle.

In order to further reduce the manufacturing cost of the attachment arrangement and to ensure a correct connection of the damper tube, it can be advantageously provided to form the two attachment parts mirror symmetrically to each other.

To connect the damper tube of the vibration damper and the attachment arrangement, the two attachment parts are arranged mirror symmetrically with respect to the longitudinal axis of extension, so that each of the attachment parts is positioned on a respective radially opposite side of the damper tube by means of the connecting section. adjacent to the side. In this position, the two attachment parts are connected to the damper tube at least section by section, ie at least along the first axial section end and/or at least along the second axial section end in a material connection. Alternatively, the two attachment parts can be glued together with the damper tube, for example by means of an adhesive arranged between the inner contour of the connecting section and the outer contour of the damper tube.

Additional features, advantages and effects of the invention are obtained from the drawings and the description of these drawings.

Figure 1 shows a first embodiment of an attachment arrangement according to the invention.
Figure 2 shows a further embodiment of the attachment arrangement.
Figure 3 is a diagram showing a vibration damper with an attachment arrangement of the third embodiment assembled to a damper tube.
Figure 4 is a diagram showing an attachment arrangement of a fourth embodiment according to the invention.
Figure 5 is a further illustration of the attachment arrangement according to Figure 4;
Figure 6 shows a vibration damper with an attachment arrangement formed according to Figure 4 assembled to a damper tube;

Components that correspond to or are identical to each other are provided with the same reference numerals in the drawings. Figure 1 shows an attachment arrangement (3) for attaching a vibration damper (1) to a wheel carrier of a motor vehicle.

The illustrated attachment arrangement 3 comprises two separate attachment parts 4 and 5 formed mirror symmetrically to each other.

Each of the attachment parts (4; 5) includes a connecting section (6) for connecting the damper tube (2) of the vibration damper (1) and the attachment arrangement (3); and an attachment section 10 projecting radially from the connection section 6, for attachment to a wheel carrier of an automobile.

The connecting section comprises a first axial section end (7) and a second axial section end (8), which are connected to each other via a jacket surface (9). Furthermore, the connecting section is formed in a shell shape and has an inner contour matching the outer contour of the damper tube 2 of the vibration damper 1. Through the direction of longitudinal extension of this connecting section, the connecting section 6 defines a longitudinal extending axis L.

FIG. 2 shows an embodiment of an attachment arrangement 3 , which differs from FIG. 1 in that the first axial section end 7 is formed at an angle, thereby extending the longitudinal axis L and Forms an angle (α). The direction of extension of the obliquely formed first axial section end 7 is shown by a first auxiliary line 15 . It appears that the angle (α) is greater than 90 degrees. Of course, the angle α may be smaller than 90 degrees, for example, as shown in FIG. 3. The choice of the angular size of the angle α substantially depends on the predetermined installation situation of the vibration damper 1 in the vehicle and/or on the expected direction and intensity of the lateral forces acting on the vibration damper 1 during operation.

In order to reliably support particularly large lateral forces, the first axial section end 7 may comprise a support section 11 formed by one first inclined section 12 and at least one second inclined section 13. You can. This embodiment is shown in Figures 4, 5 and 6. In this case, each inclined section 12; 13 forms an angle β; γ with the longitudinal extension axis L, and this angle may be smaller or larger than 90°. In this case, these two inclined sections 12; 13 forming the support section 11 likewise extend with each other forming an angle δ, which can be smaller or larger than 90°. For greater clarity, the direction of extension of the inclined section 12 in Figure 4 is shown through a second auxiliary dashed line 15, and the direction of extension of the inclined section 13 is shown through a third auxiliary dashed line 16. .

In all figures, a recess 14 is shown which is formed within the connecting section 6 and radially opposite to the attachment section 10, reducing the jacket surface 9, which recess is It is used to reduce the weight of the attachment arrangement. Furthermore, the attachment parts 4; 5 form a materially joined connection, for example welding, with the damper tube 2 of the vibration damper along the recess 14, which is achieved by means of a long weld seam. Make sure they are connected securely.

Likewise in all figures there is a second axial section end 8 bent radially outward, for increased rigidity, and an attachment section bent radially outward within the area of the second axial section end 8 . (10) is shown. Furthermore, as can be seen in FIGS. 1 , 2 , 4 , 5 and 6 , the attachment sections 10 of the two attachment parts 4 and 5 are connected to the first axial section end 7 for the same reason. may be bent transversely to their longitudinal direction of extension within the area of .

3 and 6 respectively show a vibration damper 1 for a motor vehicle with an attachment arrangement 3 in fixed connection with a damper tube 2. In this case, the damper tube 2 is positioned in the axial space, ie between two attachment parts 4, 5 arranged mirror symmetrically with respect to the direction of longitudinal extension of the damper tube 2. The connecting sections 6 of the two attachment parts 4 , 5 abut the damper tube 2 radially and extend axially over the longitudinal section of the damper tube 2 . The second axial section end 8 of the connecting section 6 of each attachment part 4; 5 is arranged in the bottom area of the vibration damper 1. In this case, the mounting bracket (1) is materially connected to the damper tube (2) at least along the end (7) of the first axial section of the connecting section (6).

The progression curve of the weld seam along the obliquely formed first axial section end (7) is advantageously configured to provide a vibration damper (1) through force action by lateral forces during operation of the vibration damper (1) assembled on the wheel carrier of the vehicle. , which in particular contributes to the distribution of material stresses in the damper tube 2 of the vibration damper to different regions along the weld seam. Through this, the risk of cracking or breakage along the weld seam can be reduced or even prevented. Accordingly, the lifespan of the vibration damper 1 can be greatly extended.

1 vibration damper
2 damper tube
3 Attachment Array
4 attachment parts
5 Attachment Parts
6 Connection section
7 First axial section end
8 Second axial section end
9 jacket cotton
10 Attachment Section
11 Support Section
12 First inclined section
13 Second inclined section
14 recess
15 1st auxiliary ship
16 2nd auxiliary ship
L longitudinal extension axis
α angle
β angle
γ angle
δ angle

Claims (9)

An attachment arrangement (3) for attaching a vibration damper (1) to a wheel carrier of a motor vehicle, the attachment arrangement (3) comprising at least two separate attachment parts (4; 5), each attachment part (4) ; 5) is

A connecting section (6) formed in a shell shape defining a longitudinal extension axis (L) for connecting the damper tube (2) of the vibration damper (1) and the attachment arrangement (3), The inner contour matches the outer contour of the damper tube (2) of the vibration damper (1), and the connecting section (6) has a first axial section end (7) and a second axial section end (8), and these two a connecting section, comprising a jacket surface (9) connecting the two axial section ends (7; 8); and
an attachment section (10) projecting radially from the connection section (6) for attachment to a wheel carrier of a motor vehicle;
Attachment arrangement (3), each comprising: Attachment according to claim 1, characterized in that the first axial section end (7) is formed at an angle, thereby forming an angle (α) with the longitudinal extension axis (L) having an angle greater or less than 90 degrees. Array (3). 3. A support section according to claim 1 or 2, wherein the first axial section end (7) is formed of one first inclined section (12) and at least one second inclined section (13). Attachment arrangement (3) comprising (11), characterized in that each inclined section (12; 13) forms an angle (β; γ) with the longitudinal extension axis (L). 4. Attachment arrangement according to claim 1, characterized in that the inclined sections (12; 13) forming the support section (11) extend at an angle δ with each other. 3). 5. The method according to any one of claims 1 to 4, wherein the connecting section (6) comprises a recess (14) for reducing the jacket surface (9) formed on a radially opposite side of the attachment section (10). Attachment arrangement (3), characterized in that. Attachment arrangement (3) according to at least one of the preceding claims, characterized in that the second axial section end (8) and/or the attachment section (10) are designed to be bent. Attachment arrangement (3) according to claim 1 or 2, characterized in that the attachment parts (4; 5) are formed in mirror symmetry to each other. In the vibration damper (1) for an automobile with an attachment arrangement (3),
The attachment arrangement (3) is formed according to at least one of claims 1 or 7, wherein each one attachment part (4; 5) is connected to each one of the damper tubes (2) by means of a connecting section (6). abutting radially opposite sides, at least section by section, i.e. at least at one of the two axial section ends (7; 8) of the connecting section (6) of each attachment part (4; 5). A vibration damper (1) for an automobile, characterized in that it is connected to the damper tube (2) in a material combination manner. In a motor vehicle having a vibration damper (1) with an attachment arrangement (3),
A motor vehicle, characterized in that the vibration damper (1) is formed according to claim 8.

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