GB2137730A - Shock absorber-spring unit with stub axle mounting - Google Patents

Shock absorber-spring unit with stub axle mounting Download PDF

Info

Publication number
GB2137730A
GB2137730A GB08409159A GB8409159A GB2137730A GB 2137730 A GB2137730 A GB 2137730A GB 08409159 A GB08409159 A GB 08409159A GB 8409159 A GB8409159 A GB 8409159A GB 2137730 A GB2137730 A GB 2137730A
Authority
GB
United Kingdom
Prior art keywords
container
stub axle
axle mounting
shock absorber
spring unit
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
GB08409159A
Other versions
GB2137730B (en
GB8409159D0 (en
Inventor
Gunther Handke
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.)
ZF Sachs AG
Original Assignee
Fichtel and Sachs AG
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 Fichtel and Sachs AG filed Critical Fichtel and Sachs AG
Publication of GB8409159D0 publication Critical patent/GB8409159D0/en
Publication of GB2137730A publication Critical patent/GB2137730A/en
Application granted granted Critical
Publication of GB2137730B publication Critical patent/GB2137730B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/001—Arrangements for attachment of dampers
    • B60G13/005—Arrangements for attachment of dampers characterised by the mounting on the axle or suspension arm of the damper unit
    • B60G13/006—Arrangements for attachment of dampers characterised by the mounting on the axle or suspension arm of the damper unit on the stub axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/07—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/54—Arrangements for attachment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/30—Spring/Damper and/or actuator Units
    • B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
    • B60G2202/312—The spring being a wound spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/129—Damper mount on wheel suspension or knuckle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/43—Fittings, brackets or knuckles
    • B60G2204/4304—Bracket for lower cylinder mount of McPherson strut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/80—Manufacturing procedures
    • B60G2206/82—Joining
    • B60G2206/8209—Joining by deformation

Landscapes

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

Abstract

The securing of a stub axle mounting 3 on the container 1 of a combination shock absorber-spring unit is the object of the present invention. It is the aim, to obtain a simple, problem-free and fully functional connection of the stub axle mounting, which consists of a sheet metal pressing, with the container. This is achieved in that the stub axle mounting 3 comprises a stop 7 acting in the axial direction which is adapted to the external contour of the container bottom 2 and possesses a relatively large abutment area in the radial direction. The container is produced by the cold impact press forming method and has thin walls but a thicker bottom 2. The stop surface instead of being constituted by four radial flanges 7, may be formed on a separate pot- shaped part (9) welded to the bottom edge of the cylindrical stub axle mounting 3. <IMAGE>

Description

SPECIFICATION Shock absorber-spring unit with stub axle mounting The invention relates to a combination shock absorber-spring unit with a stub axle, for the spring suspension and vibration damping of steered wheels of a vehicle in relation to a vehicle body, which unit comprises a container provided in the region of the container bottom with a stub axle mounting which surrounds the cylindrical outer surface of the container, while a piston rod movable in relation to the container is connected with the vehicle body, the steered vehicle wheel is mounted on a stub axle secured to the stub axle mounting and the stub axle mounting is formed by a sheet metal pressing.
For the securing of such a stub axle mounting consisting of sheet metal pressings it is known from Fed. German Publ. Spec. No. 2,938,927 to provide the stub axle mounting with apertures in which there engage radially outwardly directed projections of the container. The connection of the stub axle mounting with the container is effected in that the container tube is provided, by subsequent widening, with projections which engage in the apertures of the stub axle mounting.
From Fed. German Publ. Spec. No. 3,105,170 a shape-engaging clamp connection is known in which the stub axle mounting comprises at least one radially inwardly directed projection which engages in a corresponding depression of the container tube. In order to obtain a nondisplaceable connection between stub axle mounting and container a widening of the container tube in the former case and an impression in the latter is necessary. Especially in the case of thin-walled containers produced by the cold impact press forming method there is danger of cracking on major partial stretching in the circumferential direction, since according to experience drawn tubes tend to crack above all when deformations and stretches are applied in the circumferential direction.
The prior art further includes connection of the stub axle mounting with the container by welding or brazing. In this case the welded or brazed connection is arranged in the region of the wall thickness of the cylindrical tube section, so that a minimum wall thickness of the container tube is necessary to guarantee a satisfactory connection and seal at the securing point. These fastening methods require a very expensive monitoring to guarantee that these safety components possess the required reliability in operation.
It is the problem of the present invention to avoid the disadvantages of the known designs and to provide between container and stub axle mounting a connection which can be used without difficulty, even with very thin-walled containers produced by the cold impact press forming method, without the danger of a sacrifice of function being involved therewith.
In accordance with the invention this problem is solved in that the stub axle mounting comprises a stop acting in the axial direction which is adapted to the external contour of the bottom of the container and possesses a relatively large abutment area in the radial direction. Due to this measure it becomes possible for the main forces acting upon the shock absorber-spring unit during driving to be taken up not through the depressions or projections arranged in the container tube but through the pressure union and the container bottom. The tube wall thickness of the container can for this reason be made especially thin, which is favourable because of the requirement for weight saving in the automobile industry.Since specifically in the containers produced by the cold impact press forming method the wall thickness of the bottom is relatively great compared with the wall thickness of the cylindrical part, the stop acts upon the very stable container bottom.
According to further features of the invention the stop is formed by radially inwardly bent-over tabs which are made in one piece with the stub axle mounting. or the stop consists of a radially inwardly pointing crimping. Likewise it is readily possible for the stop to be formed by a sheet metal part made in pot form and connected with the stub axle mounting.
An extremely secure and problem-free connection of the stub axle mounting with the container is obtained -- as shown by one feature of the invention -- in that a weld seam is arranged between the container bottom and the edge of the mounting. Thus this weld seam is situated in the region of the relatively thick bottom and accordingly at a non-critical position.
As shown by a further feature of the invention, the connection of the stub axle mounting with the container can take place by means of a pressure union, with corrugations arranged between container and stub axle mounting. In accordance with the invention the corrugations extend in the axial direction of the container, and the corrugations arranged on the container are provided on the container tuber in a simple manner in the case of production by the cold impact press forming method, and preferably consist of a multi-spline profile with relatively slight profile height. Likewise it is possible to provide at least one corrugation extending transversely of the axial direction of the container.
Since the main forces acting upon the shock absorber-spring unit are taken up through the container bottom and the stop, it is readily possible for an adhesive connection to be provided - as shown by the invention -- for the connection of the stub axle mounting with the container.
The invention will be explained in greater detail below by reference to the forms of embodiment illustrated in the drawings, wherein:- FIGURE 1 shows a shock absorber-spring unit in longitudinal section; FIGURE 2 shows a detail of the shock absorberspring unit in the region of the stub axle mounting; FIGURE 3 shows the plan view of the stop according to Figure 2; FIGURE 4 shows a form of embodiment in which the stub axle mounting is connected with a potshaped sheet metal part forming the stop; FIGURE 5 shows the plan view of the potshaped part according to Figure 4; FIGURE 6 shows a pot-shaped part with short axial extent;; FIGURE 7 shows the arrangement of a corrugation proceeding transversely of the axial direction, and FIGURE 8 shows the connection of the container with the stub axle mounting by means of corrugations extending in the axial direction and a transverse corrugation.
The combination shock absorber-spring unit as shown in Figure 1 is fastened with the piston rod 4 to a vehicle body (not shown) and comprises a container 1 carrying the stub axle mounting 3. The stub axle body connectible with the mounting 3 and upon which a vehicle wheel is mounted is shown in chain lines. The shock absorber-spring unit consists of a double-tube vibration damper with the damper cylinder secured concentrically in the container tube 1. The piston rod 4 is guided and sealed at the upper end of the container tube 1. The manner of operation and the assembly of such a shock absorber spring unit are sufficiently known and therefore require no further explanation at this point.
Essentially the connection of the stub axle mounting with the container will be discussed below.
In the form of embodiment according to Figures 1 to 3 the container 1 is produced by the cold impact press forming method and has a relatively slight wall thickness of the tubular part, while the container bottom 2 is made relatively thickwalled. The stub axle mounting 3 possesses at its lower end a stop acting in the axial direction which is formed by inwardly bent tabs 7. These tabs 7 are bent over so that their abutment face 6 is adapted to the external contour 5 of the container bottom 2. Due to the fact that these bent-over tabs 7 have a relatively great extent in the radial direction, a good abutment is obtained for the stop in the axial direction. For the connection of the stub axle mounting 3 with the container 1 a weld seam 11 is arranged between the container bottom 2 and the inner ends of the bent-over tabs 7.Such a weld connection is problem-free since it is arranged in the region of the relatively stoutwalled bottom 2.
The damper cylinder accommodated within the container 1 is designated by 1 4 in Figure 1.
In Figures 4 and 5 the connection of the stub axle mounting 3 with the container 1 is effected by means of a pressure union, the stop in the axial direction being formed by the bottom 10 of a sheet metal part 9 of pot form. This sheet metal part is connected fast with the stub axle mounting, for example by rolled seam welding. After the stub axle mounting 3 has been pressed on to the container 1 the stop face 6 of the bottom 10 comes to abut on the outer contour 5 of the container bottom 2.
The form of embodiment according to Figure 6 differs from that according to Figures 4 and 5 essentially in that the sheet metal part 9 made in pot form has a short axial extent and the bottom 10 of the pot-shaped sheet metal part 9 is connected with the bottom 2 of the container 1 by aweldseam 11.
In the form of embodiment according to Figure 7 the stop of the stub axle mounting 3 which acts in the axial direction is formed by a crimping 8.
The connection of the stub axle mounting 3 with the container 1 is effected by a pressure union, and a corrugation 1 3 extending transversely of the axial direction is formed to secure the position.
The connection of the container 1 with the stub axle mounting 3 as illustrated in Figure 8 is also in conformity. Here apart from the corrugation 13 a further corrugation formation 12 is provided in the axial direction, this corrugation 12 being formed by a multi-spllned profile with relatively low profile height -- preferably formed on the container tube, and the corrugations which extend in the axial direction being formed at the same time in the production of the container 1 by the cold impact press forming method.

Claims (10)

1. Combination shock absorber-spring unit with a stub axle for the spring suspension and vibration damping of steered wheels of a vehicle in relation to a vehicle body, which unit comprises a container provided in the region of the container bottom with a stub axle mounting which surrounds the cylindrical outer surface of the container, while a piston rod movable in relation to the container is connected with the vehicle body, the steered vehicle wheel is mounted on a stub axle secured to the stub axle mounting and the stub axle mounting is formed by a sheet metal pressing, characterised in that the stub axle mounting (3) comprises a stop (stop face 6) acting in the axial direction which is adapted to the external contour (5) of the container bottom (2) and possesses a relatively large abutment area in the radial direction.
2. Shock absorber-spring unit according to Claim 1, characterised in that the stop (stop face 6) is formed by radially inwardly bent-over tabs (7) which are made in one piece with the stub axle mounting (3).
3. Shock absorber-spring unit according to Claim 1, characterised in that the stop (stop face 6) is formed by a radially inwardly extending crimping (8).
4. Shock absorber-spring unit according to Claim 1, characterised in that the stop is formed by a sheet metal part (9) made in pot form and connected with the stub axle mounting (3).
5. Shock absorber-spring unit according to Claims 1 to 4, characterised in that a weld seam (11) is arranged between container bottom (2) and inner edge of the stop (stop face 6) for the connection of the stub axle mounting (3) with the container (1).
6. Shock absorber-spring unit according to Claims 1 to 4, characterised in that the connection of the stub axle mounting (3) with the container (1) is effected by means of a pressure union and corrugations arranged between container (1 ) and stub axle mounting (3).
7. Shock absorber-spring unit according to Claims 1 to 4 and 6, characterised in that corrugations (12) are arranged extending in the axial direction of the container (1).
8. Shock absorber-spring unit according to Claims 1 to 4, 6 and 7, characterised in that at least one corrugation (13) is arranged extending transversely of the axial direction of the container (1).
9. Shock absorber-spring unit according to Claims 1 to 4, characterised in that an adhesive connection is provided to connect the stub axle mounting (3) with the container (1).
10. Shock absorber substantially as described with reference to Figures 1-3, Figures 4 and 5, Figure 6, Figure 7 or Figure 8 of the accompanying drawings.
GB08409159A 1983-04-09 1984-04-09 Shock absorber - spring unit with stub axle mounting Expired GB2137730B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833312753 DE3312753C2 (en) 1983-04-09 1983-04-09 Strut with knuckle mount

Publications (3)

Publication Number Publication Date
GB8409159D0 GB8409159D0 (en) 1984-05-16
GB2137730A true GB2137730A (en) 1984-10-10
GB2137730B GB2137730B (en) 1987-11-18

Family

ID=6195816

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08409159A Expired GB2137730B (en) 1983-04-09 1984-04-09 Shock absorber - spring unit with stub axle mounting
GB08706159A Expired GB2187532B (en) 1983-04-09 1987-03-16 Shock absorber - spring unit with stub axle mounting

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08706159A Expired GB2187532B (en) 1983-04-09 1987-03-16 Shock absorber - spring unit with stub axle mounting

Country Status (2)

Country Link
DE (1) DE3312753C2 (en)
GB (2) GB2137730B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190725B (en) * 1986-05-20 1989-12-13 Valmet Oy Supporting and attachment structure of a piston-and-cylinder combination
GB2197422B (en) * 1986-11-08 1991-06-26 Evertaut Limited Height adjustment mechanism for swivel chairs and other articles of furniture
EP1180441A1 (en) * 2000-08-16 2002-02-20 Delphi Technologies, Inc. Weldless attachment of mounting bracket to reservoir tube of suspension strut assembly
FR2870578A1 (en) * 2004-05-19 2005-11-25 Zf Friedrichshafen Ag Ag Anti-swing damping system for wheel support, has external tube and body attachment bracket coupled together using soldered connection, where base of tube rests directly on tube and traversing weld bead is provided between base and tube
US8047342B2 (en) * 2006-05-30 2011-11-01 Kayaba Industry Co., Ltd. Strut type shock absorber
US20210054900A1 (en) * 2018-05-03 2021-02-25 Zf Friedrichshafen Ag Vibration Damper Having Adjustable Damping Valve

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4327703A1 (en) * 1993-08-18 1995-02-23 Lemfoerder Metallwaren Ag Angle joint for chassis parts in a motor vehicle
US5607035A (en) * 1994-10-13 1997-03-04 Delphi France Automotive Systems Hydraulic damper
GB9323047D0 (en) * 1993-11-09 1994-01-05 Acg France A method of forming a suspension strut
JPH0858330A (en) * 1994-08-25 1996-03-05 Toyota Motor Corp Strut combining structure
US5772168A (en) * 1994-11-28 1998-06-30 Unisia Jecs Corporation Mounting bracket for pressurized fluid buffer device
GB2324588B (en) * 1995-04-28 1999-01-06 Mannesmann Sachs Ag Vibration damper
DE19515643C1 (en) * 1995-04-28 1996-11-07 Fichtel & Sachs Ag Suspension strut with aluminum container
DE10023648C1 (en) * 2000-05-13 2001-10-25 Mannesmann Sachs Ag MacPherson strut unit, for vehicle, has shock absorber with end piece forming base of outer tube and having separating piston inside end piece, sliding against cylindrical free wall section
US6533230B2 (en) * 2001-03-09 2003-03-18 Delphi Technologies, Inc. One-piece mounting bracket and vehicle damper assembly and mounting method
DE10163219B4 (en) * 2001-12-21 2012-10-25 Volkswagen Ag Shock absorber for a motor vehicle suspension
US20060049015A1 (en) * 2004-09-09 2006-03-09 Tenneco Automotive Operating Company, Inc. Automatic nut running to torque without the possibility of slip
DE102009000164B4 (en) 2009-01-13 2016-03-03 Zf Friedrichshafen Ag Vibration damper with an axle mount
DE102009026523B4 (en) * 2009-05-28 2012-02-09 Zf Friedrichshafen Ag Method for producing an outer cylinder for a vibration damper
DE102014202211A1 (en) 2014-02-06 2015-08-06 Zf Friedrichshafen Ag Cylinder, in particular for a vibration damper, with a sleeve-shaped attachment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093157A (en) * 1981-02-13 1982-08-25 Fichtel & Sachs Ag Attaching spring seat or stub axle to damper tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2165812A1 (en) * 1970-12-29 1972-07-20 Tokico Ltd., Kawasaki, Kanagawa (Japan) Shock absorber assembly
FR2437310A1 (en) * 1978-09-28 1980-04-25 Allinquant J G FIXING DEVICE FOR TELESCOPIC SUSPENSION SHOCK ABSORBERS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2093157A (en) * 1981-02-13 1982-08-25 Fichtel & Sachs Ag Attaching spring seat or stub axle to damper tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2190725B (en) * 1986-05-20 1989-12-13 Valmet Oy Supporting and attachment structure of a piston-and-cylinder combination
GB2197422B (en) * 1986-11-08 1991-06-26 Evertaut Limited Height adjustment mechanism for swivel chairs and other articles of furniture
EP1180441A1 (en) * 2000-08-16 2002-02-20 Delphi Technologies, Inc. Weldless attachment of mounting bracket to reservoir tube of suspension strut assembly
FR2870578A1 (en) * 2004-05-19 2005-11-25 Zf Friedrichshafen Ag Ag Anti-swing damping system for wheel support, has external tube and body attachment bracket coupled together using soldered connection, where base of tube rests directly on tube and traversing weld bead is provided between base and tube
US8047342B2 (en) * 2006-05-30 2011-11-01 Kayaba Industry Co., Ltd. Strut type shock absorber
US20210054900A1 (en) * 2018-05-03 2021-02-25 Zf Friedrichshafen Ag Vibration Damper Having Adjustable Damping Valve
US11692606B2 (en) * 2018-05-03 2023-07-04 Zf Friedrichshafen Ag Vibration damper having adjustable damping valve

Also Published As

Publication number Publication date
GB2137730B (en) 1987-11-18
GB2187532A (en) 1987-09-09
GB8409159D0 (en) 1984-05-16
DE3312753A1 (en) 1984-10-11
GB2187532B (en) 1988-04-20
GB8706159D0 (en) 1987-04-23
DE3312753C2 (en) 1996-05-09

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010409