DE4228205A1 - Shock absorbing strut for vehicle - has axially running slotted connection area on spring plate surrounding cylinder - Google Patents

Shock absorbing strut for vehicle - has axially running slotted connection area on spring plate surrounding cylinder

Info

Publication number
DE4228205A1
DE4228205A1 DE19924228205 DE4228205A DE4228205A1 DE 4228205 A1 DE4228205 A1 DE 4228205A1 DE 19924228205 DE19924228205 DE 19924228205 DE 4228205 A DE4228205 A DE 4228205A DE 4228205 A1 DE4228205 A1 DE 4228205A1
Authority
DE
Germany
Prior art keywords
spring plate
connection area
slots
spring
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19924228205
Other languages
German (de)
Other versions
DE4228205C2 (en
Inventor
Rolf Dr Angermann
Volker Dipl Ing Hansemann
Ingo Dipl Ing Sparenberg
Wolfgang Dipl Ing Gruen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Bilstein Suspension GmbH
Original Assignee
August Bilstein GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by August Bilstein GmbH filed Critical August Bilstein GmbH
Priority to DE19924228205 priority Critical patent/DE4228205C2/en
Publication of DE4228205A1 publication Critical patent/DE4228205A1/en
Application granted granted Critical
Publication of DE4228205C2 publication Critical patent/DE4228205C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/062Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper
    • B60G15/063Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the spring being arranged around the damper characterised by the mounting of the spring on the damper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/88Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10Mounting of suspension elements
    • B60G2204/12Mounting of springs or dampers
    • B60G2204/124Mounting of coil springs
    • B60G2204/1242Mounting of coil springs on a damper, e.g. MacPerson strut

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Springs (AREA)

Abstract

The shock absorber incorporates a spring plate (5) which has a slot (6) in the cylindrically shaped connection area (2). The slot runs along the entire height of the connection region. The number of slots may be increased to three, and each slot can be set at an oblique angle or have a curved or T-shaped profile. ADVANTAGE - Allows the spring plate to be positioned in a simple way on the cylindrical tube to ensure the right tolerances for laser welding.

Description

Die Erfindung betrifft ein Federbein für ein Fahrwerk eines Kraftfahrzeuges mit mindestens einem Zylinderrohr, das an einem Ende durch eine abdichtende Kolbenstangenführung und am anderen Ende durch ein Bodenteil begrenzt wird, einer in diesen eintauchenden, in einem Dämpfungskolben endenden Kol­ benstange und mindestens einem Federteller zur Aufnahme der Schraubenfeder.The invention relates to a shock absorber for a chassis Motor vehicle with at least one cylinder tube that one end through a sealing piston rod guide and is delimited at the other end by a bottom part, one in this plunging, ending in a damping piston rod and at least one spring plate to accommodate the Coil spring.

Federbeine bilden zusammenwirkend, vorzugsweise mit mecha­ nischen Federn, das Federungs- und Dämpfungssystem zwischen Radaufhängung und Fahrzeugaufbau. Häufig werden hierbei als Federungssysteme Schraubenfedern eingesetzt, die als Platz­ ersparnisgründen um den Schwingungsdämpfer gelegt sind. Die Schraubenfeder stützt sich an ihrem oberen und unteren Ende jeweils gegen einen Federteller ab, der üblicherweise mit dem Zylinderrohr des Ein- oder Zweirohrdämpfers verbunden ist. Aus der deutschen Patentanmeldung P 41 22 798 ist es be­ kannt, den Federteller mit dem Zylinderrohr durch Laser­ schweißen zu verbinden.Shocks form interacting, preferably with mecha African springs, the suspension and damping system between Suspension and vehicle body. Often this is considered Coil springs used as a space for reasons of economy are placed around the vibration damper. The Coil spring rests on its upper and lower ends each against a spring plate, usually with is connected to the cylinder tube of the one or two-tube damper. From German patent application P 41 22 798 it is be knows the spring plate with the cylinder tube by laser welding to join.

Beim Laserschweißen tritt die grundsätzliche Schwierigkeit auf, daß sehr hohe Anforderungen an die Herstell- und Po­ sitionsgenauigkeiten der zu verschweißenden Teile gestellt werden. Für die Anwendung des Laserschweißens sind oft Toleranzen zwischen den zu verschweißenden Teilen von 0,1 mm erforderlich. Damit ist es bei herkömmlichen Fe­ dertellern nicht möglich, diesen auf dem Zylinderrohr zu positionieren. The basic difficulty arises with laser welding on that very high demands on the manufacturing and Po accuracy of the parts to be welded become. For the application of laser welding are often Tolerances between the parts to be welded by 0.1 mm required. So it is with conventional Fe dertellern not possible to this on the cylinder barrel position.  

Die Aufgabe der Erfindung ist es, einen Federteller zu schaffen, der bei Einhaltung der für das Laserschweißen notwendigen To­ leranzen auf einfache Weise auf dem Zylinderrohr positioniert werden kann.The object of the invention is to create a spring plate the observance of the To. required for laser welding lerances easily positioned on the cylinder barrel can be.

Die Aufgabe wird durch den kennzeichnenden Teil des Anspruchs 1 gelöst, wobei die Unteransprüche 2 bis 6 vorteilhafte Ausbil­ dungen darstellen.The object is achieved by the characterizing part of claim 1 solved, the sub-claims 2 to 6 advantageous training representations.

Die mit der Erfindung erzielten Vorteile liegen insbesondere darin, daß durch das so erzielte Auffedern des zylinderförmi­ gen Teils während des Aufschiebens des Federtellers auf das Zylinderrohr die für das Laserschweißen notwendigen Toleranzen zwischen den zu verschweißenden Teilen eingehalten werden können und das Zylinderrohr nicht deformiert wird.The advantages achieved with the invention are in particular in that by the springing of the cylinder-shaped partly during the sliding of the spring plate onto the Cylinder tube the tolerances necessary for laser welding can be maintained between the parts to be welded and the cylinder tube is not deformed.

Vorteilhafterweise können die Schlitze durch Materialscherung oder Materialentfernung, insbesondere Stanzen, auch während der Zieharbeitsgänge in den Federteller eingebracht werden.The slots can advantageously be sheared by material or material removal, especially punching, even during of the drawing operations are introduced into the spring plate.

Die Erfindung soll anhand eines Ausführungsbeispiels näher dar­ gestellt werden. Die zugehörigen Zeichnungen zeigen:The invention is intended to illustrate an exemplary embodiment be put. The associated drawings show:

Fig. 1 die Darstellung eines Federbeins, Fig. 1 is an illustration of a strut,

Fig. 2a einen Federteller, FIG. 2a is a spring plate,

Fig. 2b einen Ausschnitt aus dem zylinderförmigen Teil des Federtellers und Fig. 2b shows a section of the cylindrical part of the spring plate and

Fig. 3a bis 3d unterschiedliche Schlitzformen. FIGS. 3a-3d different slot shapes.

Fig. 1 zeigt den Ausschnitt aus einem Einrohr-Federbein, das ein Zylinderrohr 1 und eine in diesem eintauchende Kolben­ stange 3 aufweist, an deren unteren Ende ein nichtdargestellter Dämpfungskolben angeordnet ist. Weiterhin trägt das Zylinder­ rohr 1 den die nicht dargestellte Schraubenfeder aufnehmenden Federteller 5, der mit dem Zylinderrohr 1 mittels Laserschweißen verbunden ist. Fig. 1 shows the section of a single-tube strut, the cylinder tube 1 and a plunging rod in this rod 3 , at the lower end of which a damping piston, not shown, is arranged. Furthermore, the cylinder tube 1 carries the spring plate 5 , which is not shown, which is connected to the cylinder tube 1 by means of laser welding.

Bei Einrohr-Federbeinen ist es nicht möglich, den Federteller 5 mit konventionellen Schweißverfahren am Zylinderrohr 1 zu befestigen. Da der Dämpfungskolben an der Innenoberfläche gleitet muß diese hinsichtlich Rundheit und Linearität eine höchste Genauigkeit aufweisen. Eine solche Genauigkeit ist nur über Laserschweißverfahren zu erreichen.In the case of single-tube struts, it is not possible to attach the spring plate 5 to the cylinder tube 1 using conventional welding methods. Since the damping piston slides on the inner surface, it must be extremely precise in terms of roundness and linearity. Such accuracy can only be achieved using laser welding processes.

Um auch bei Einhaltung der für das Laserschweißen notwendigen Herstellungs- und Positioniergenauigkeiten ein Aufschieben des Federtellers 5 auf das Zylinderrohr 1 sowie eine genaue Po­ sitionierbarkeit zu gewährleisten, weist der zylinderförmige Verbindungsbereich 2 des Federtellers wenigstens einen über die gesamte Höhe des Verbindungsbereiches 2 verlaufenden Schlitz 6 auf, wodurch eine Spreizfederung des zylinderförmigen Verbin­ dungsbereichs 2 des Federtellers 5 beim Aufschieben auf das Zy­ linderrohr erzielt wird.In order to ensure that the spring plate 5 is pushed onto the cylinder barrel 1 and that it can be positioned accurately, even if the manufacturing and positioning accuracies required for laser welding are observed, the cylindrical connection area 2 of the spring plate has at least one slot 6 extending over the entire height of the connection area 2 , whereby an expansion suspension of the cylindrical connec tion area 2 of the spring plate 5 is achieved when pushed onto the cylinder tube Zy.

Eine sehr gute Spreizfederung wird erreicht, wenn, wie in Fig. 2b dargestellt, mehrere Schlitze 6 gleichmäßig über den Um­ fang des Verbindungsbereichs 2 des Federtellers 5 angeordnet werden.A very good spreading suspension is achieved if, as shown in Fig. 2b, several slots 6 are evenly arranged over the order of the connecting area 2 of the spring plate 5 .

Wie die Fig. 3a bis 3d zeigen, sind dabei die unterschied­ lichsten Formen der Schlitze 6 im Verbindungsbereich 2 mög­ lich.As shown in FIGS . 3a to 3d, the most varied shapes of the slots 6 in the connection area 2 are possible.

BezugszeichenReference numerals

1 Zylinderrohr
2 zylinderförmiger Verbindungsbereich
3 Kolbenstange
5 Federteller
6 Schlitz
1 cylinder tube
2 cylindrical connection area
3 piston rod
5 spring plates
6 slot

Claims (6)

1. Federbein für ein Fahrwerk eines Kraftfahrzeuges, mit min­ destens einem Zylinderrohr, das an einem Ende durch eine abdichtende Kolbenstangenführung und am anderen Ende durch ein Bodenteil begrenzt wird, einer in diesen eintauchenden, in einem Dämpfungskolben endenden Kolbenstange und mindes­ tens einem Federteller zur Aufnahme der Schraubenfeder, da­ durch gekennzeichnet, daß der Federteller (5) in seinem zy­ linderförmigen Verbindungsbereich (2) mindestens einen über die gesamte Höhe des Verbindungsbereiches (2) verlaufenden Schlitz (6) aufweist.1.Spring for a chassis of a motor vehicle, with at least one cylinder tube, which is delimited at one end by a sealing piston rod guide and at the other end by a base part, a plunging rod that ends in a damping piston and at least one spring plate for receiving the helical spring, characterized in that the spring plate ( 5 ) in its zy-cylindrical connection area ( 2 ) has at least one slot ( 6 ) extending over the entire height of the connection area ( 2 ). 2. Federbein nach Anspruch 1, dadurch gekennzeichnet, daß der Federteller in seinem zylinderförmigen Verbindungsbereich (2) drei auf dem Umfang gleichmäßig verteilte Schlitze (6) aufweist.2. Suspension strut according to claim 1, characterized in that the spring plate in its cylindrical connecting region ( 2 ) has three evenly distributed slots ( 6 ) on the circumference. 3. Federbein nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schlitze (6) axial verlaufen.3. Strut according to claim 1 or 2, characterized in that the slots ( 6 ) extend axially. 4. Verfahren zur Herstellung eines Federbeins nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schlitze (6) durch Materialscherung eingebracht werden.4. A method for producing a shock absorber according to one or more of claims 1 to 3, characterized in that the slots ( 6 ) are introduced by shearing material. 5. Verfahren zur Herstellung eines Federbeins nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schlitze (6) durch Materialentfernung eingebracht werden. 5. A method for producing a spring strut according to one or more of claims 1 to 3, characterized in that the slots ( 6 ) are introduced by material removal. 6. Verfahren zur Herstellung eines Federbeins nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schlitze (6) während der Zieharbeitsgänge in den Fe­ derteller (5) eingebracht werden.6. A method for producing a shock absorber according to one or more of claims 1 to 5, characterized in that the slots ( 6 ) during the drawing operations in the Fe derteller ( 5 ) are introduced.
DE19924228205 1992-08-27 1992-08-27 Suspension strut for a chassis of a motor vehicle Expired - Fee Related DE4228205C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924228205 DE4228205C2 (en) 1992-08-27 1992-08-27 Suspension strut for a chassis of a motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924228205 DE4228205C2 (en) 1992-08-27 1992-08-27 Suspension strut for a chassis of a motor vehicle

Publications (2)

Publication Number Publication Date
DE4228205A1 true DE4228205A1 (en) 1994-03-03
DE4228205C2 DE4228205C2 (en) 1997-02-13

Family

ID=6466385

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924228205 Expired - Fee Related DE4228205C2 (en) 1992-08-27 1992-08-27 Suspension strut for a chassis of a motor vehicle

Country Status (1)

Country Link
DE (1) DE4228205C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920017A1 (en) * 1999-05-03 2000-11-16 Mannesmann Sachs Ag Dish spring fixing device for attaching spring to cylindrical container of strut, with at least one fixing ring clamped between cylindrical sectors of container and dish spring
EP1748218A1 (en) * 2005-07-29 2007-01-31 ThyssenKrupp Bilstein Suspension GmbH Damper with fixing elements welded thereto

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213657A1 (en) * 1981-04-21 1982-11-25 IAO Industrie Riunite S.p.A., 10092 Beinasco, Torino Support for a MacPherson strut suspension for motor vehicles
DE4122798A1 (en) * 1991-07-10 1993-01-14 Bilstein August Gmbh Co Kg Single tube dashpot/strut unit for motor vehicles - has spring plate, connected to tube by strap, and laser welding forming weld seam of certain thickness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213657A1 (en) * 1981-04-21 1982-11-25 IAO Industrie Riunite S.p.A., 10092 Beinasco, Torino Support for a MacPherson strut suspension for motor vehicles
DE4122798A1 (en) * 1991-07-10 1993-01-14 Bilstein August Gmbh Co Kg Single tube dashpot/strut unit for motor vehicles - has spring plate, connected to tube by strap, and laser welding forming weld seam of certain thickness

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920017A1 (en) * 1999-05-03 2000-11-16 Mannesmann Sachs Ag Dish spring fixing device for attaching spring to cylindrical container of strut, with at least one fixing ring clamped between cylindrical sectors of container and dish spring
DE19920017B4 (en) * 1999-05-03 2005-07-07 Zf Sachs Ag Fixing a spring plate on a cylindrical container
EP1748218A1 (en) * 2005-07-29 2007-01-31 ThyssenKrupp Bilstein Suspension GmbH Damper with fixing elements welded thereto

Also Published As

Publication number Publication date
DE4228205C2 (en) 1997-02-13

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

Owner name: AUGUST BILSTEIN GMBH, 58256 ENNEPETAL, DE

D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KRUPP BILSTEIN GMBH, 58256 ENNEPETAL, DE

8327 Change in the person/name/address of the patent owner

Owner name: THYSSENKRUPP BILSTEIN GMBH, 58256 ENNEPETAL, DE

8327 Change in the person/name/address of the patent owner

Owner name: THYSSENKRUPP BILSTEIN SUSPENSION GMBH, 58256 ENNEP

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20110301