GB2137728A - Support body for a component supported on a piston rod - Google Patents
Support body for a component supported on a piston rod Download PDFInfo
- Publication number
- GB2137728A GB2137728A GB08408112A GB8408112A GB2137728A GB 2137728 A GB2137728 A GB 2137728A GB 08408112 A GB08408112 A GB 08408112A GB 8408112 A GB8408112 A GB 8408112A GB 2137728 A GB2137728 A GB 2137728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston rod
- support body
- face
- support
- body according
- 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
Links
- 239000002184 metal Substances 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims 1
- 241000309551 Arthraxon hispidus Species 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt
-
- 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
- F16F9/3207—Constructional features
- F16F9/3228—Constructional features of connections between pistons and piston rods
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A support body for a component, supported on a piston rod of a hydraulic, pneumatic or hydropneumatic damper unit, comes to abut on a face 3, 21, 37 of taper form of the piston rod and comprises a transverse surface 12, 39 for supporting the component, a conical surface 10, 40 for locating on the tapered piston rod surface and a cylindrical surface 11, 41 which abuts a cylindrical surface of the piston rod adjoining the taper. The support body is usable for the various components supported on the piston rod, for example for the fitting of a damper piston Fig. 2, a piston rod articulation Fig. 10 or a traction attachment Fig. 9. <IMAGE>
Description
SPECIFICATION
Support body for a component supported on a piston rod
The invention relates to a support body for a component, supported on a piston rod, of a hydraulic, pneumatic or hydro-pneumatic unit, especially a vibration damper, which support body is arranged essentially in the region of a surface of taper form of the piston rod, situated between two external diameters, and possesses an abutment face which comes to abut on the surface of taper form, while a support surface extending perpendicularly of the axis of the piston rod is provided for the component.
For supporting the damping piston in a vibration damper it is known from Fed. German
Utility Model No. 8,120,684 to provide a support ring which comes to abut over a short part of its axial length upon a surface of taper form of a piston rod. With the oblique face of the piston rod this support ring forms over a lengthy axial region of the support ring a free space between the inner contour of the support ring and the oblique face of the piston rod, so that the sought support face extending perpendicularly of the piston rod axis is not reliably achieved. Furthermore the support ring is held in its position only by the fitting and securing of the piston. In order to maintain the axial tolerance for the position of the support face, it is necessary that both the oblique face of the piston rod and the internal contour of the support body be produced very precisely.
It is the problem of the present invention to avoid the disadvantages of the known design and to produce a support body which is suitable for the various components to be supported on the piston rod. The support body itself is to be cheap in production and to render possible a satisfactory position of the support face on the piston rod, without great demands on the tolerances.
In accordance with the invention this problem is solved in that the support body comprises, as well as the abutment face associated with the face of taper form, at least one cylindrical abutment face, with the abutment faces arranged one behind the other in the axial direction of the piston rod. Such supporting of the support body on the piston rod guarantees the support surface extending perpendicularly of the piston rod axis for the component resting on the support body.
A support body which can be produced at good vaiue for its price in mass production is obtained according to the invention in that it consists of a sheet metal part formed into cup form, where the cup bottom forms the support face and an opening adapted to the smaller diameter of the piston rod is provided, while the internal diameter of the cup-shaped sheet metal part corresponds to the larger external diameter of the piston rod. In this case, as shown by one feature of the invention, the opening of the cup-shaped component is formed by a punched-out hole or a collar.
Further advantageous forms of embodiment of the support body are obtained in that according to one feature the support body is formed substantially as a disc and comprises a formed-on central extension part which comes to rest on the surface of taper form and on the external diameter of the piston rod. A very simple support body is obtained according to the invention in that it consists of a sheet metal part of conical formation which possesses abutment faces for the two diameters and the face of taper form of the piston rod.
Especially for those forms of embodiment where the support body must not protrude beyond the contour of the external diameter of the piston rod it is expedient if - as shown by one feature of the invention -- the support body is formed by a support ring which has an abutment face for the small diameter and an abutment face for the face of taper form of the piston rod.
According to further features of the invention the support body associated with the face of taper surface for a piston, a piston rod joint or a traction attachment. Thus various components can be secured in the pre-determined position on the piston rod with the aid of the support body.
According to the invention the abutment face of.
the support body associated with theface of taper form of the piston rod can be generated simply by an axial pressure-application force, a pressureapplication force which is greater than the maximum force acting upon the piston rod in operation being exerted upon the support face of the support body when pushed on to the piston rod. In accordance with the invention this pressure-application force will adapt the opening of the cup-shaped component to the contour of the face of taper form of the piston rod. Likewise when a support ring is used it is possible for the support ring to be adapted over a part of its axial length by a pressure-application force to the contour of the face of taper form.
Especially when the piston rod end is intended for the fitting of the articulation parts, a nonlosable connection of the support body is obtained in that in accordance with the invention the cylindrical abutment face forms a press fit with the piston rod.
The invention will be explained in greater detail hereinafter by reference to the drawing wherein:
FIGURE 1 shows a piston rod end with a support body consisting of a sheet metal part formed into cup form;
FIGURE 2 shows the fitting of the sheet metal part of cup-shaped formation according to Figure 1, in which the abutment face of the support body is adapted to the face of taper form of the piston rod;
FIGURE 3 shows a sheet metal part of cupshaped formation, provided with a collar, as support body;
FIGURE 4 shows the support body according to
Figure 3, where the collar is adapted to the face of taper form of the piston rod by application of an axial force;
FIGURE 5 shows a support body formed essentially as a disc;
FIGURE 6 shows a support body having three abutment faces arranged lying one behind the other;
FIGURE 7 shows the arrangement of a support ring before reshaping;;
FIGURE 8 shows a support ring according to
Figure 7 after application of the axial force;
FIGURE 9 shows a widened-out piston rod, with a support sleeve arranged in the widened-out section.
FIGURE 10 shows a longitudinal section through a piston-cylinder unit with support body according to the invention.
In the case of piston rods of solid and tubular formation which are provided by swarfless deformation with piston rod ends formed in journal form for the accommodation of further components, a face of taper form is produced between the piston rod diameter and the smaller diameter of the formed-on piston rod end. The swarfless forming-on of the piston rod end is especially advantageous with tubular piston rods.
Figures 1 and 2 show the piston rod 1 with a formed-on piston rod end 2, with a face 3 of taper form arranged between the outer face with larger diameter 4 and the outer face with smaller diameter 5. The support body is formed by a cupshaped sheet metal part 6 which possesses a cup bottom 7 with a punched-out hole 9. With the internal diameter 8 the sheet metal part 6 lies
partially upon the outer face with larger diameter 4 of the piston rod 1. For the supporting of a component, such as piston or attachment joint, to
be connected with the piston rod 1 the cup
bottom 7 is provided with a support face 12.This
support face 12 - as shown in Figure 2 - serves at the same time as application surface for a tool
which exerts an axial pressure-application force
upon the sheet metal part 6 of cup-shaped
formation and brings the latter into the required axial position. At the same time the pressure
application force, which is greater than the
maximum force acting upon the piston rod in
operation, swages the abutment face 10 on the
sheet metal part 6, so that this abutment face 10
is satisfactorily adapted to the contour of the face
3 of taper form. The cylindrical abutment face 11 between sheet metal part 6 and piston rod 1
serves as guide and prevents oblique positioning
of the sheet metal part 6.Especially when in the
installation of the vibration damper the piston rod
end 2 serves to receive articulation parts, it is
required that the sheet metal part of cup-shaped formation cannot be lost, which is readily achieved
in that the cylindrical abutment face 11 forms a
press fit with the piston rod 1.
The form of embodiment according to Figures 3
and 4 differs essentially from those according to
Figures 1 and 2 in that the sheet metal part 6 of
cup-shaped formation has an opening formed by a
collar 13. Firstly, as represented in Figure 3, the
cup-shaped sheet metal part 6 is pushed on to the formed-on end 2 of the piston rod 1. Next, as shown in Figure 4, an axial force is applied with the aid of a tool to the support surface 12, whereby the collar 13 adapts itself to the face 3 of taper form and the sheet metal part 6 of cupshaped formation is pushed with its lower end over the piston rod 1, whereby the cylindrical abutmentface 11 is formed.
In the form of embodiment according to Figure 5 the support body is formed substantially as a disc 14 and possesses the central extension part 1 5. This central extension part 1 5 abuts with the abutment face 10 upon the face 3 of taper form and further possesses the cylindrical abutment face 11 which comes to abut on the outer face with iarger diameter 4 of piston rod 1.
Figure 6 shows a further form of embodiment in which the support body is a substantially conically formed sheet metal part 1 6. At its two ends this sheet metal part 1 6 possesses cylindrical extension parts, and the upper cylindrical extension part forms the cylindrical abutment face 1 7 with the formed-on piston rod end 2, while the lower cylindrical extension part with the outer face with larger diameter 4 of the piston rod 1 constitutes the cylindrical abutment face 1 The
middle part of the sheet metal part 16 comprises the abutment face 10 adapted to the conical face 3.In this form of embodiment again a pressureapplication force can be introduced by an axial force which is introduced by a tool to the support face 12, so that the abutment face 10 lies on the whole length of the face 3 of taper form.
In Figures 7 and 8 there are shown the arrangement and fitting of a support ring 18 where a piston rod collar 1 9 having a slightly larger diameter than the formed-on piston rod end 2 is formed on between the face 3 of taper form and the formed-on piston rod end 2. Since an oblique face is likewise arranged between piston
rod collar 1 9 and piston rod end 2, by application of a force to the support face 12, as shown by
Figure 8, firstly the support ring 1 8 is pushed over the piston rod collar 19, whereby the support ring
1 8 widens out. By reason of the oblique face 3, the abutment face 10 adapted to the face 3 of taper form is formed by the axial pressure
application force.Such a support ring 1 8 is
advantageous especially when a support body is
not to protrude beyond the external contour of the
piston rod 1. Since moreover the cylindrical
abutment face 1 7 forms a press fit with the piston
rod collar 19, the support ring 18 is connected
with the piston rod 1 so that it cannot be lost.
According to Figure 9 a form of embodiment is
shown which comprises a support body formed as
support sleeve 20 forming the support face 1 2 for
a traction attachment. Here the support sleeve 20
is not provided on the piston rod end, but bears
upon a widened section 21 of the piston rod 1.
This widened section 21 is formed so that in the
drawing-on of the sleeve 20 the latter forms a
press fit with the cylindrical abutment face 11 and
at the same time the conical abutment face 10
adapted to the widening is formed.
A piston-cylinder unit is represented in Figure 1 0. This comprises a cylinder 30 and a piston rod
31. The piston rod 31 carries a piston 32 within
the cylinder. The piston rod 31 is conducted out of
the cylinder through a sealing and guide unit 33
and carries a joint head 34 at its outer end. The joint head is screwed to a threaded bolt 35 which forms the outer end of a tapered outer piston rod section 36. The piston rod section 36 merges by way of a tapered transition face 37 into the piston rod 31. Against the conical transition face 37 there lies an annular support body 38 which is of similar assembly to that in Figure 4. This annular
support body 38 has a support face 39 for the joint head 34. An inwardly drawn collar piece 40 of the support body 38 lies against the conical transition face 37. Moreover the collar piece abuts with the internally cylindrical abutment face 41 on the externally cylindrical abutment face 42 of the piston rod 31.
Claims (14)
1. Support body for a component, support on a piston rod, of a hydraulic, pneumatic or hydro
pneumatic unit, preferably a vibration damper, where the support body is arranged essentially in the region of a surface of taper form of the piston
rod situated between two external diameters and possesses an abutment face which comes to abut on the surface of taper form, while a support face extending perpendicularly of the axis of the piston
rod is provided, characterised in that the support body (6, 1 4, 1 6, 1 8, 20) comprises at least one cylindrical abutment face (11,17) as well as the abutment face (1 0) allocated to the face (3) of taper form, the abutment faces being arranged
lying one behind the other in the axial direction of the piston rod (1).
2. Support body according to Claim 1, characterised in that the support body is formed by a sheet metal part (6) of cup-shaped formation with the cup bottom (7) serving as support face
(12) and an opening is arranged adapted to the smaller diameter (5) of the piston rod (1), while the internal diameter (8) of the sheet metal part
(6) of cup form corresponds to the larger external diameter (4) of the piston rod (1).
3. Support body according to Claims 1 and 2, characterised in that the opening of the cupshaped sheet metal part (6) is formed by a punched-out hole (9).
4. Support body according to Claims 1 and 2, characterised in that the opening of the cupshaped sheet metal part (6) is formed by a collar
(13).
5. Support body according to Claim 1, characterised in that the support body is formed substantially as a disc (14) and comprises a formed-on central extension part (15) which comes to abut on the face (3) of taper form and on the external diameter (4) of the piston rod (1).
6. Support body according to Claim 1, characterised in that the support body is a sheet metal part (16) of conical formation which comprises abutment faces (10, 11, 12) for the two diameters (4, 5) and the face (3) of taper form of the piston rod (1).
7. Support body according to Claim 1, characterised in that the support body is formed by a support ring (1 8) which comprises an abutment face (17) for the small diameter (diameter of the piston rod collar (1 9) and an abutment face (10) for the face (3) of taper form of the piston rod (1).
8. Support body according to Claims 1 to 7, characterised in that the support body forms the support face (12) for a piston.
9. Support body according to Claims 1 to 7, characterised in that the support body forms the support face (12) for a traction attachment.
10. Support body according to Claims 1 to 7 characterised in that the support body forms the support face (12) for a piston rod articulation.
11. Support body according to Claims 1 to 10, characterised in that the abutment face (10) of the support body allocated to the face (3) of taper form of the piston rod (1) is generated by an axial pressure-application force which is exerted upon the support face (1 2) of the support body when pushed on to the piston rod (1) and is greater than the maximum force acting upon the piston rod (1) in operation.
12. Support body according to Claims 1 to 11, characterised in that the opening of the cupshaped component (6) is adapted by the pressureapplication force to the contour of the face (3) of taper form of the piston rod (1).
13. Support body according to Claims 1 and 7 to 11, characterised in that the support ring (18) is adapted by the pressure-application force, on a part of its axial length, to the contour of the face (3) of taper form.
14. Support body according to Claims 1 to 12 characterised in that the cylindrical abutment face (11, 17) forms a press fit with the piston rod (1).
1 5. Piston rod for a piston-cylinder unit, which piston rod comprises a conical transition surface (37) between successive sections (36,31) of different diameters, while furthermore on this conical transition surface there is supported an annular support body (38) which in turn forms a substantially axially directed support face for a component (34) fitted on the piston rod (31), characterised in that the annular support body (38) additionally abuts with at least one internally cylindrical abutment face (41) on at least one externally cylindrical abutment face (42) of the piston rod (31).
1 6. Piston rod for a piston-cylinder unit substantially as herein described with reference to
Figures 1 and 2, Figures 3 and 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9 and Figure 10 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833311323 DE3311323A1 (en) | 1983-03-29 | 1983-03-29 | SUPPORT BODY FOR A COMPONENT SUPPORTED ON A PISTON ROD |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8408112D0 GB8408112D0 (en) | 1984-05-10 |
| GB2137728A true GB2137728A (en) | 1984-10-10 |
| GB2137728B GB2137728B (en) | 1987-05-07 |
Family
ID=6194932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08408112A Expired GB2137728B (en) | 1983-03-29 | 1984-03-29 | Support body for a component supported on a piston rod |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3311323A1 (en) |
| GB (1) | GB2137728B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2297601A (en) * | 1995-02-03 | 1996-08-07 | Fichtel & Sachs Ag | Mounting eye |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017206537B4 (en) | 2017-04-18 | 2022-03-17 | Volkswagen Aktiengesellschaft | Piston rod for a vibration damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1092565A (en) * | 1966-05-20 | 1967-11-29 | Ford Motor Co | Motor vehicle suspensions |
| GB1397795A (en) * | 1971-05-15 | 1975-06-18 | Fichtel & Sachs Ag | Bumper bar assembly for motor vehicles |
| GB1493607A (en) * | 1974-11-27 | 1977-11-30 | Woodhead Ltd J | Shock absorbers |
| GB1600845A (en) * | 1977-05-04 | 1981-10-21 | Lely Nv C Van Der | Coupling member |
| GB2100834A (en) * | 1981-06-13 | 1983-01-06 | Fichtel & Sachs Ag | Piston construction in shock absorbers and gas springs |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3015596A1 (en) * | 1980-04-23 | 1981-10-29 | Fichtel & Sachs Ag, 8720 Schweinfurt | HYDRAULIC VIBRATION DAMPER WITH LOW-NOISE SHOCK VALVES |
| DE3109122A1 (en) * | 1981-03-11 | 1982-09-23 | Fichtel & Sachs Ag, 8720 Schweinfurt | Spring disc for a valve |
| DE8120684U1 (en) * | 1981-07-15 | 1981-10-22 | Boge Gmbh, 5208 Eitorf | Telescopic shock absorbers |
-
1983
- 1983-03-29 DE DE19833311323 patent/DE3311323A1/en active Granted
-
1984
- 1984-03-29 GB GB08408112A patent/GB2137728B/en not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1092565A (en) * | 1966-05-20 | 1967-11-29 | Ford Motor Co | Motor vehicle suspensions |
| GB1397795A (en) * | 1971-05-15 | 1975-06-18 | Fichtel & Sachs Ag | Bumper bar assembly for motor vehicles |
| GB1493607A (en) * | 1974-11-27 | 1977-11-30 | Woodhead Ltd J | Shock absorbers |
| GB1600845A (en) * | 1977-05-04 | 1981-10-21 | Lely Nv C Van Der | Coupling member |
| GB2100834A (en) * | 1981-06-13 | 1983-01-06 | Fichtel & Sachs Ag | Piston construction in shock absorbers and gas springs |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2297601A (en) * | 1995-02-03 | 1996-08-07 | Fichtel & Sachs Ag | Mounting eye |
| US5730262A (en) * | 1995-02-03 | 1998-03-24 | Fichtel & Sachs Ag | Shock absorber or vibration damper and a hinge eye for a vibration damper or shock absorber |
| GB2297601B (en) * | 1995-02-03 | 1998-04-29 | Fichtel & Sachs Ag | Mounting eye |
| ES2130894A1 (en) * | 1995-02-03 | 1999-07-01 | Fichtel & Sachs Ag | Shock absorber or vibration damper and a hinge eye for a vibration damper or shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2137728B (en) | 1987-05-07 |
| GB8408112D0 (en) | 1984-05-10 |
| DE3311323A1 (en) | 1984-10-11 |
| DE3311323C2 (en) | 1991-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20020329 |