DE102018111716B4 - Suspension with bracket and holder - Google Patents

Abstract

The invention relates to a suspension 1 for fastening a housing or a pipe to at least one bearing section 81, 81 'of an exhaust system of a motor vehicle 8, comprising at least one support 2 with a length L and with a first side 21 and a second side 22 , wherein the second side 22 is opposite the first side 21, - at least one fastening device 3, 3 'for fixing the carrier 2, the carrier 2 having at least one fixing region 25, 25' on the first side 21, the carrier 2 over the Fixing area 25, 25 'can be fixed to the bearing section 81, 81', - the support 2 having an inner wall 23 and at least one edge cheek 24, 24 ', the edge cheek 24, 24' for stiffening the support 2 to the second side 22 is angled towards, the suspension 1 has a holder 4, on which at least indirectly an elastic bearing element 5 can be fixed for hanging the housing or the tube, the H age 4 is attached to the second side 22 of the carrier 2 via at least one weld seam 7, 7 '.

Description

The invention relates to a suspension for fastening a housing or a pipe to at least one bearing section of an exhaust system of a motor vehicle, comprising at least one carrier with a length L and a first side and a second side, the second side being opposite the first side, at least one fastening device for fixing the carrier, the carrier having at least one fixing region on the first side, the carrier being fixable to the bearing section via the fixing region and wherein the carrier has an inner wall and at least one edge cheek, wherein the edge cheek is angled toward the second side to stiffen the carrier.

Furthermore, from the DE 198 33 160 A1 a device for the elastic attachment of an exhaust system to a motor vehicle part is known, wherein a welded-on intermediate holder is provided which is welded to the exhaust system.

The DE 72 11 799 U discloses a suspension device for exhaust pipes in motor vehicles. This has a holder that is welded to a silencer.

It is already a suspension from the US 3,270,992 A known. The suspension has a carrier which is fixed with a first side to a frame of a motor vehicle. The edge cheeks of the carrier are folded towards a second side. An elastic bearing element for holding a tube is attached directly to the carrier. The tube and the frame are both on the first side of the support. The object of the invention is to design a suspension in such a way that its rigidity is improved, and the sub-floor is also protected.

The object is achieved according to the invention in that the suspension has a holder to which an elastic bearing element for hanging the housing or the tube can be fixed at least indirectly, the holder being fastened to the second side of the carrier via at least one weld seam, a first one A recess is provided in the inner wall of the carrier, a first recess cheek at least partially surrounding the first recess, the first recess cheek being at least partially angled toward the second side of the carrier, the first recess cheek or the edge cheek being fastened to the holder via the weld seam is. Due to the bevel, an angle β be formed between the edge cheek and the inner wall with 60 ° <β <120 ° and in particular β = 90 °. The weld seam connects the carrier and the holder in a material fit. So that's an angle α formed between the recess cheek of the carrier and the second side of the carrier with α <180 °, in particular with 60 ° <α <120 ° or with α = 90 °. The recess additionally stiffens the carrier by means of the recess cheeks. Furthermore, the recess cheeks can overcome the distance between the carrier and the holder, which can be generated by the edge cheeks in the region of the inner wall when both components are in contact, so that welding of the two is possible.

The holder is welded to the support and additionally braces the support in this area. In addition, the carrier bears against the motor vehicle above the locking area. The fixing area can be arranged above the carrier, the housing or tube being on the second side of the carrier and the motor vehicle with its underbody lying on the first side of the carrier. In this case, the holder is still spaced from the motor vehicle and the elastic bearing element which is attached to the holder can still be easily replaced. This measure additionally increases the stability of the holder precisely between the carrier and the fixing area. The increased rigidity protects the sub-floor, as it means that the wearer does not make any strong movements in the storage area and thus presses in the sub-floor.

Furthermore, since the folds point away from the bearing section, and hence away from the underbody, no sharp edges of the edge cheeks come into contact with the bearing section, so that the latter is not injured, for example by scratching or the like. This is particularly advantageous if a heat shield is provided in the area of the bearing section. Furthermore, the elastic bearing element can also be protected from the sharp edges which may be present on the edge cheeks, since it can be positioned on the holder next to the edge cheeks.

The elastic bearing element can be designed as a rubber ring or as a spring. The carrier and the fastening device can be juxtaposed with respect to the course over the length L placed or at the same height.

It is also advantageous if the edge cheek extends over the length L runs uninterrupted between the holder and the fastening device. It is precisely over this course that forces arise in the carrier, in particular if the housing or pipe to be suspended is fastened to the vehicle by means of the suspension. These forces can be absorbed over the edge cheek, which increases the stability.

The suspension has two components, namely the carrier and the holder. Since these components are welded together, the placement and formation of the weld seam and the associated structural requirements for the carrier and holder are crucial for improving the rigidity of the suspension.

It can also be advantageous if a second recess is provided in the holder, a second recess cheek at least partially surrounding the second recess in the holder, the second recess cheek of the holder being at least partially angled toward the carrier, the second recess cheek being over the Weld seam is attached to the support, making an angle γ between the recess cheek of the holder and the holder with γ <180 °, in particular with 60 ° <γ <120 ° or with γ = 90 °. The recess additionally stiffens the holder and can at the same time bridge the distance between the carrier and the holder. If both the holder and the carrier have a cutout which undercut each other, their edge cheeks form an overlap when the carrier and holder abut one another.

It can be of particular importance for the present invention if the first recess has a first base and / or the second recess has a second base. The recess and the bottom can be formed as an indentation. The floor additionally stiffens the wearer. In the area of the floor, the carrier and the holder can form an overlap when the carrier and the holder abut one another.

If the components lie against each other in the area of an overlap, the rigidity increases. In the area of an overlap, welding per se by means of the spot welding method can be considered in order to weld the carrier and holder together, the weld seam then being a spot weld seam. In order to be able to carry out the spot welding process, electrodes must be placed on opposite sides of the workpieces with respect to the spot weld seam. This is not always possible due to the geometry of the carrier and holder.

Accordingly, it can advantageously be provided that the carrier and holder have an overlap, at least one slot being provided in the carrier or in the holder in the region of the overlap. The components can be welded using the slot, the weld seam being able to be provided in the slot. The weld seam is a weld bead that is exposed in relation to an environment and can be produced from only one side. The slot can therefore be used without the use of the spot welding process.

In connection with the design and arrangement according to the invention, it can be advantageous if the carrier extends over its length L forms at least two angled segments, thus forming a first segment and a second segment, or exactly three angled segments, consequently forming a first segment, a second segment and a third segment. The first segment connects to the second segment.

The second segment connects to the third segment. The formation of several mutually angled segments makes it possible to adapt the carrier to the geometry of the bearing section. A suspension and a recess can be provided on the first segment.

It can also be advantageous if the edge cheek extends over the length L runs uninterrupted between two segments. The rigidity of the beam is thus also guaranteed over the angular range. If the carrier has at least two fastening devices on different segments in each case, it is advantageous if the edge cheek runs at least between these two segments without interruption.

It may also be advantageous if the holder and / or the fastening device is provided on the first segment and a second fastening device and / or a third recess is provided on the second segment or on the third segment. In this way, two independent suspensions can be combined to form a common suspension, which in particular also ensures the rigidity with respect to, in particular, twisting in the circumferential direction with respect to the fastening devices.

Furthermore, it can be advantageous if the first segment extends over the length L of the carrier has at least three bent areas angled to one another, consequently a first bent area, a second bent area and a third bent area, the first recess being provided on the first bent area and the first fastening device being provided on the third bent area. The second fold area can be provided between the first fold area and the third fold area. It is thus possible to generate an offset of the first and third bent areas with respect to the bearing section, as a result of which the contact surface of the carrier with the sub-floor is minimized in order to protect it.

• 1 eine Draufsicht auf die Aufhängung ohne Aussparung;
• 2 eine Draufsicht auf die Aufhängung mit Aussparung;
• 3a einen Querschnitt III der Aufhängung;
• 3b-3d weitere Ausführungsformen im Querschnitt;
• 4a-4d Ausführungsformen der Aufhängung mit Boden im Querschnitt;
• 5a, 5b Draufsichten auf die Aufhängung mit alternativer Platzierung der Ausnehmung;
• 6 einen Querschnitt der Aufhängung orthogonal zum Verlauf des Halters;
• 7a einen Querschnitt der Aufhängung mit drei Segmenten entlang des Trägers;
• 7b einen Querschnitt der Aufhängung mit drei Abkantungen entlang des Trägers.

Further advantages and details of the invention are explained in the patent claims and in the description and shown in the figures. It shows:

• 1 a plan view of the suspension without recess;
• 2 a plan view of the suspension with recess;
• 3a a cross section III the suspension;
• 3b-3d further embodiments in cross section;
• 4a-4d Embodiments of the suspension with the floor in cross section;
• 5a . 5b Top views of the suspension with alternative placement of the recess;
• 6 a cross section of the suspension orthogonal to the course of the holder;
• 7a a cross section of the suspension with three segments along the beam;
• 7b a cross section of the suspension with three bends along the beam.

According to the top view after 1 has a suspension 1 a carrier 2 with a visible first page 21 and a holder 4 on. The carrier 2 has a first fastening device 3 , an indentation 12 as well as a length L on. The indentation 12 extends in the direction of the course of the length L in the middle along the beam 2 to additionally brace it. The keeper 4 is over a first weld 7 and a second weld 7 ' to a second side 22 of the carrier 2 that the first page 21 lies opposite and cannot be represented here, welded, the weld seams 7 . 7 ' on the edge of the carrier 2 on two cheeks 24 . 24 ' , as in particular in 3a shown, are provided. The keeper 4 extends laterally from the carrier in plan view 2 away, so that an elastic bearing element 5 next to the carrier 2 is placed.

According to 2 points the carrier 2 additionally a first recess 6 with a recess cheek, as in particular in 3a shown. The welds 7 . 7 ' are now in the first recess 6 intended. On the representation of the bearing element 5 was waived in favor of the overview.

The following 3a shows a cross section III through the suspension 1 who in 2 is indicated. The carrier 2 points next to the first page already shown 21 the opposite second side 22 on. Furthermore, the carrier points 2 an inner wall 23 on in which the recess 6 is provided. To the second page 22 are both a first edge cheek 24 and a second edge cheek 24 ' of the carrier 2 as well as a first recess cheek 61 from the inner wall 23 angled. So is between the second edge cheek 24 ' and the inner wall 23 of the carrier 2 an angle β With β = 90 ° trained. Likewise is between the recess cheek 61 and the inner wall 23 an angle α designed with α = 90 °.

Because of the cheeks 24 . 24 ' there is an offset between the inner wall 23 and the holder 4 , The offset is due to the first recess cheek 61 bridged. This makes it possible to have the first recess cheek 61 to the holder 4 over the welds 7 . 7 ' to weld. The keeper 4 has an edge 42 and a holder fold 43 that ensure additional stability.

To justify the offset and the stability, after 3b alternatively in the holder 4 a second recess 6 ' be provided. The second recess 6 ' is from a second recess cheek 61 ' surround. The second recess cheek 61 ' forms with the holder 4 an angle γ out with γ = 90 °. The two welds 7 . 7 ' then connect the second recess cheek 61 ' with the inner wall 23 ,

The offset and stability can be according to 3c also be justified if both bearers 2 as well as holder 4 a corresponding recess 6 . 6 ' have whose recess cheeks 61 . 61 ' touch each other with their faces. The welds 7 . 7 ' then connect the recess cheeks 61 . 61 ' ,

To 3d also have both carriers 2 as well as holder 4 one recess each 6 . 6 ' on. The corresponding recess cheeks undercut 61 . 61 ' so that they touch each other. This leads to an overlap 10 , In addition, are in the first recess cheek 61 a first slot 11 and a second slot 11 ' intended. This makes it possible to weld the components together by welding over the slots 11 . 11 ' done and the welds 7 . 7 ' thus in the slot 11 . 11 ' are provided.

According to 4a is the embodiment according to 3a further developed in that the recess 6 a floor 9 having. The recess 6 is therefore designed as a formation. The first weld 7 between the floor 9 and the holder 4 is manufactured using the spot welding process. Also in 4b which shows a top view of this embodiment is the first weld 7 to recognize.

According to 4c are in the holder 4 two slots 11 . 11 ' intended. In these slots 11 . 11 ' are the welds 7 . 7 ' placed. The welds 7 . 7 ' are each designed as a weld bead. 4d shows the top view of the embodiment.

According to the top views 5a and 5b it is not necessary that the molding 6 so on the carrier 2 is that the molding 6 in plan view on each side, hence on four sides of the carrier 2 is surrounded. Rather, it is possible that the molding 6 such on the edge of the carrier 2 is placed only on three sides of the carrier 2 is limited. It is irrelevant whether there is no floor 9 is provided as after 5a or whether a floor 9 is provided as after 5b ,

6 shows in particular a cross section of the holder 4 , wherein in the embodiment shown here the holder 4 a second recess 6 ' has, the second recess 6 ' a floor 9 ' has and is therefore formed as a formation.

According to 7a points the carrier 2 three segments, namely a first segment S1 , a second segment S2 and a third segment S3 , The first segment S1 has the first recess 6 and the first fastening device 3 on. On the first segment S1 is still the keeper 4 intended. About the first fastening device 3 is the carrier 2 with a first stipulation area 25 to a first storage section 81 a motor vehicle 8th appropriate.

The second segment S2 allows an offset of the third segment S3 in terms of the first segment S1 , The third segment S3 has a third recess 6 " and a second fastening device 3 ' on over which a second stipulation area 25 ' of the carrier 2 on a second storage section 81 ' is attached. A second holder 4 ' is at the third recess 6 " intended.

To 7b points the first segment S1 a first bending area A1 , a second bending area A2 and a third fold area A3 on. The third bending area A3 of the first segment S1 connects to the second segment S2 on. The first recess 6 is at the first bending area A1 provided, the first fastening device 3 at the third bend area A3 is provided.

LIST OF REFERENCE NUMBERS

1

suspension

2

carrier

21

first page

22

second page

23

inner wall

24

first edge cheek

24 '

second cheek

25

first fixing area

25 '

second fixing area

3

first fastening device

3 '

second fastening device

4

holder

4 '

second holder

42

edge

43

Halterabkantung

5

bearing element

6

first recess

6 '

second recess

6 "

third recess

61

first recess cheek

61 '

second recess cheek

7

first weld

7 '

second weld

8th

motor vehicle

81

first storage section

81 '

second storage section

9

first floor

9 '

second floor

10

overlap

11

first slot

11 '

second slot

12

indentation

A1

first bending area

A2

second bending area

A3

third chamfer area

S1

first segment

S2

second segment

S3

third segment

L

length

α

angle

β

angle

γ

angle

Claims (9)

Suspension (1) for attaching a housing or a pipe to at least one bearing section (81, 81 ') of an exhaust system of a motor vehicle (8), comprising - at least one support (2) with a length L and with a first side (21) and a second side (22), the second side (22) lying opposite the first side (21), - at least one fastening device (3, 3 ') for fixing the carrier (2), the carrier (2) having at least one fixing region ( 25, 25 ') on the first side (21), the support (2) being fixable to the bearing section (81, 81') via the fixing area (25, 25 '), - the support (2) having an inner wall (23) and at least one edge cheek (24, 24 '), the edge cheek (24, 24') being angled towards the second side (22) for stiffening the support (2), characterized in that the suspension (1 ) has a holder (4) on which at least indirectly an elastic bearing element (5) for hanging the housing o that of the tube can be fixed, the holder (4) being fastened to the second side (22) of the carrier (2) via at least one weld seam (7, 7 '), a first recess (6) in the inner wall (23) the carrier (2) is provided, a first recess cheek (61) at least partially surrounding the first recess (6), the first recess cheek (61) being at least partially angled toward the second side (22) of the carrier (2), wherein the first recess cheek (61) or the edge cheek (24, 24 ') is fastened to the holder (4) via the weld seam (7, 7'). Suspension (1) after Claim 1 , characterized in that the edge cheek (24, 24 ') runs uninterruptedly over the length L between the holder (4) and the fastening device (3, 3'). Suspension (1) according to one of the preceding claims, characterized in that a second recess (6 ') is provided in the holder (4), with a second recess cheek (61') the second recess (6 ') in the holder (4 ) at least partially surrounds, the second recess cheek (61 ') of the holder (4) being at least partially angled toward the carrier (2), the second recess cheek (61') via the weld seam (7, 7 ') on the carrier ( 2) is attached. Suspension (1) according to one of the Claims 2 to 3 , characterized in that the first recess (6) has a first base (9) and / or that the second recess (6 ') has a second base (9'). Suspension (1) after Claim 1 to 3 characterized in that the carrier (2) and holder (4) have an overlap (10), at least one slot (11) being provided in the carrier (2) and / or in the holder (4) in the region of the overlap (10) is. Suspension (1) according to one of the preceding claims, characterized in that the carrier (2) forms at least two angled segments (S1, S2) over its length L, thus a first segment (S1) and a second segment (S2 ), or forms exactly three angled segments (S1, S2, S3), thus a first segment (S1), a second segment (S2) and a third segment (S3). Suspension (1) after Claim 6 , characterized in that the edge cheek (24, 24 ') runs uninterruptedly over the length L between two segments (S1, S2). Suspension (1) according to one of the Claims 6 or 7 , characterized in that the holder (4) and / or the fastening device (3) is provided on the first segment (S1) and a second fastening device (3 ') and / or a third recess (6 ") on the second segment ( S2) or on the third segment (S3). Suspension (1) according to one of the Claims 6 to 8th , characterized in that the first segment (S1) has at least three bent regions (A1, A2, A3) over the length L of the carrier (2), thus a first bent region (A1), a second bent region (A2) and a third fold area (A3), the first recess (6) being provided on the first fold area (A1) and the first fastening device (3) being provided on the third fold area (A3).

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