GB2245336A - Torsional vibration damper - Google Patents
Torsional vibration damper Download PDFInfo
- Publication number
- GB2245336A GB2245336A GB9013974A GB9013974A GB2245336A GB 2245336 A GB2245336 A GB 2245336A GB 9013974 A GB9013974 A GB 9013974A GB 9013974 A GB9013974 A GB 9013974A GB 2245336 A GB2245336 A GB 2245336A
- Authority
- GB
- United Kingdom
- Prior art keywords
- torsional vibration
- vibration damper
- damper according
- resilient means
- members
- 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.)
- Withdrawn
Links
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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/123—Wound springs
- F16F15/12353—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
Abstract
A clutch driven plate comprises twin hub flanges (40, 42) with a carrier plate (14) mounted for rotation relative thereto. A pair of end caps (50, 52) is mounted in aligned windows in the flanges (40, 42) and carrier plate (14). Two pairs of concentric springs (82, 84) are mounted, side by side, between the end caps (50, 52) to resist rotational movement between the flanges (40, 42) and the carrier plate (14).
Description
TORSION VIBRATION DAMPER
The present invention relates to torsional vibration da,.tpers and in particularly to torsional vibration dampers suitable for use in a friction clutch.
The present invention aims to provide a torsional vibration damper having a high torsional stiffness.
The present invention provides a torsional vibration damper comprising a driving member and a driven member mounted for rotation relative thereto, first and second end caps mounted on the mfnlbers, main resilient means interposed between the end caps and acting to resist said relative rotation, and auxiliary resilient means interposed between the end caps and acting to resist said relative rotation after a predetermined initial rotation.
Preferably the torsional vibration damper further comprises stop means which limits movement of the end caps against the auxiliary resilient means.
Conveniently one end cap has a projection, the auxiliary resilient means being mounted on t projection.
Optionally the end cap has a stud and the auxiliary resilient means has a hole therein or mounting it on the stud.
Preferably the end cap has a hole therein and the auxilary resilient means has a stud thereon for engagement with the hole.
Preferably the main resilient means comprises a spring, or, advantageously, two springs mounted side by side.
The present invention further provides a torsional vibration damper comprising a driving me: er and a driven member mounted for rotation relative thereto, first and second end caps mounted on the members, and resilient means interposed between the end caps to resist said relative rotation, the resilient means comprising two resilient members mounted side by side.
Preferably the members each have a window therethrough such that, when the windows are aligned, each end cap contacts one end of each window and rotation of the driven member relative to the driving member causes one end of one window and an opposite end of the other window to move together, thereby moving the end caps together.
In a preEerred embodiment the torsional vibrationrl imper further comprises a packing member between the driving member and the driven member the packing member being frictionally rotatable relative to the driving member or the driven member.
Optionally the torsional vibrational damper comprises a plurality of packing members ci rcumferenti ally spaced around the damper.
The packing member or members may be mounted on the driving member.
Preferred embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings in which:rig 1 is a section through a clutch driven plate assembly including a torsional vibration damper according to a first embodiment of the present invention;
Fig 2 is a view of the assembly of fig 1 without the side plates and hub;
Fig 3 is a view of a side plate of the assembly of fig 1;
Fig 4 is an enlarged view of one of the end caps of fig 1;;
Fig 5 and Fig 6 are views of an elastomeric huffer of -the assembly of Fig 1,
Fig 7 is a section through a clutch driven plate assembly including a torsional vibration damper according to a second embodiment of the invention,
Fig 8 is a view, similar to Fig 2, of the assembly of Fig 7, and
Fig 9 is a graph showing the torque characteristic of the assembly of Figs 1 to 6.
Referring to Fig 1, a clutch driven plate comprises a driven member in the form oE a hub 10 having a radially extending hub flange 12.
A driving member in the form of an annular carrier plate 14 has a central aperture 16.
Two annular friction facings 18,2 are mounted one on either side of an outer region 22 or the carrier plate 14. Two annular support plates 24,26 are mounted one on either side of an inner region 28 of the carrier plate 14. The central apertures 3U of the support plates 24,2 are the san? size as the central aperture 16 of the carrier plate 14. The carrier plate 14 is fitted over the flange 12 so that it is rotatable relative to the flange.
Two annular side plates 4(3,42 as shown in rig 3 are mounted one on either sides of the hub flange 12. The side plates 4(3,42 are secured to the hub flange 12 by rivets 44 and extend radially outwards on either side of the carrier plate 14.
The carrier plate 14 and support plates 24,26 each have eight apertures which are aligned to form carrier windows 46. The side plates 4(3,42 each have eight side plate windows 48 which are aligned with the carrier windows 46.
Referring to Fig 2 a pair oE end caps IjQ,53. is mounted in each carrier window 46. Each end cap 50, 52 comprises a back plate 54 which rests against a respective end 56, 58 oE one of the carrier windows 46, a stop 60 protruding from the back plate 54 near its radially outer end 62, and an end cap projection 63 protruding from the back ovate near its radially inner end 66. z stud 64 protrudes from one end cap projection 63 (shown in fig 4), and a buffer 68, having a hole 67 therein, (shown in fig 5) is mounted on the stud such that it extends beyond the end of the stud. In this embodiment the buffer is oE elastomeric material.On the other end cap 5(3, an abutment surface 7(3 is formed opposite the buffer 68.
Four lugs 72, (see figs 1 and 3) one on either side of each end cap 5(3,52, extend out through opposite side plate windows 48 and rest against the ends 73, 74 of the side plate windows 48. A spring mounting 76 protrudes from each lug 72.
A pair of helical springs 8(3 is mounted on each pair of opposite spring mountings 76. Each pair of springs 80 comprises an inner spring 82 and an outer spring 84.
Eight packing members 86 are riveted to each oE the support plates 24,26. Each pacling member 86 fits between two of the carrier windows 46 and is shaped such that its edges 88 coincide with the ends 56,58 Of the carrier windows 46. The packing members 86 are in frictional contact with the side plates 4(3,42.
In operation, rotation of the carrier plate 14 relative to the hub 1(3 and side plates 4(3,42 causes one end 56 of the carrier window 46 to move towards the opposite end 74 of the side plate window 48. This urges the two end caps 5(3,52 together against the force of the springs 8(3,82,84 which act as main resilient means. After further rotation the buffer 68 contacts the abutment surface 7. The buffer 68 then acts as an auxiliary resilient means and further rotation is against the force of the springs 8(3,82,84 and the buffer 68.
This increases the torque required for further rotation. If enough torque is applied the stops 6(3 come into contact (as shown in dotted outline in Fig 2) preventing further rotation. In the embodiment shown, the total possible rotation in either direction is 7.5 degrees.
Rotation of the carrier 14 relative to the side plates is also damped by friction between the packing members 86 and the side plates 4,42.
Referring to Figs 7 and 8, the second embodiment differs form the first in that the packing members 86 are replaced by a pair of packing disks 9(3,92. The packing disks are the same shape and thickness as the support plates 94,96 but they are countersunk to receive the heads 98 of the rivets 1(3(3.
The end caps 1(32, 14 of the second embodiment are identical to each other. Instead of the stud 64 in the first embodiment, each end cap 1(32,1(34 has a hole 16 and the buffer 18 has a stud 110 for inserting in the hole in one end cap 1(34. The buffer 108 is also glued onto the end cap 1(34. The buffer can be attached to the end cap 104 by glue only, so that the holes 16 in the end caps 1(32,1(34 and the stud 110 on the buffer 108 are not needed.
Fig 9 shows the estimated torque characteristics oE the driven plate assembly of the first embodiment of the invention. The first stage a represents the torque provided by the springs before the buffers come into operation at a rotation of 6.25 . Thereafter the buffers provide extra torque. Curve b shows the characteristic for buffers made of Hytrel b4(375 and b shows the characteristic for buffers of Hytrel 6346. The springs alone provide a torqe equal to the maximum engine torque, the buffers only coming into operation to smooth out irregularities in the torque applied to the driven plate.
As an alternative to the helical springs the main resilient means couid be made from elastomeric material.
Claims (18)
1) A torsional vibration damper comprising a driving member and a driven member mounted for rotation relative thereto, first and second end caps mounted on the members, main resilient means interposed between the end caps and acting to resist said relative rotation, and auxiliary resilient means interposed between the end caps and acting to resist said relative rotation after a predetermined initial rotation.
2) A torsional vibration damper according to claim I further comprising stop means which limits movement of the end caps against the auxiliary resilient means.
3) A torsional vibration damper according to claim 2 wherein the stop means includes two oppose stops, on- on each end cap.
4) A torsional vibration damper according to any foregoing claim wherein one eni cnp has a projection, the auxiliary resilient means being mounted on the projection.
5) A torsional vibration damper according to any Eoregoing claim wherein the end cap has a stud and the auxilary resilient means has a hole therein for mounting it on the stud.
6) A torsional vibration damper according to any foregoing claim wherein the end cap has a hole therein and the auxilary resilient means has a stud thereon for engagement with the hole.
7) A torsional vibration damper according to any foregoing claim wherein the auxiliary resilient means is formed of elastomeric material.
8) A torsional vibration per according to any foregoing claim wherein the main resilient means comprises two resilient members mounted side by side.
9) A torsional vibration damper comprising a driving member and a driven member mounted tor rotation relative thereto, first and second end caps mounted on the members, and resilient means interposed between the end caps to resist said relative rotation, the resilient means comprising two resilient members mounted side by side.
1) A torsional vibration damper according to claim 8 or claim 9.wherein each resilient member comprises a spring.
11) A torsional vibration damper according to claim 1(3 wherein each said spring has a further spring coiled around it.
12) A torsional vibration damper according to any foregoing claim, the members each having a window therethrough such that, when the windows are aligned each end cap contacts one end of each window and rotation oE the driven member relative to the driving member causes one end oE one window and an opposite end of the other window to move together, thereby moving the end caps together.
13) A torsional vibration damner according to claim 12 one of the members comprising two side plates each having a window therethrough such that the two side plates act on the end cap simultaneously.
14) A torsional vibration damper according to any foregoing claim further comprising a packing member between the driving member and the driven member, the packing :tember being frictionally rotatable relative to the driving member or the driven member.
15) A torsional vibration damper according to claim 14 wherein the packing member comprises a disk having windows therein.
16) A torsional vibration damper according to claim 14 comprising a plurality of packing members circumferentially spaced around the damper.
17) A torsional vibration damper according to any one of claims 14 to 16 wherein the packing member or members is or are mounted on the driving member.
18) A torsional vibration damper substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9013974A GB2245336A (en) | 1990-06-22 | 1990-06-22 | Torsional vibration damper |
| PCT/GB1991/000535 WO1992000470A1 (en) | 1990-06-22 | 1991-04-05 | Torsional vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9013974A GB2245336A (en) | 1990-06-22 | 1990-06-22 | Torsional vibration damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9013974D0 GB9013974D0 (en) | 1990-08-15 |
| GB2245336A true GB2245336A (en) | 1992-01-02 |
Family
ID=10678063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9013974A Withdrawn GB2245336A (en) | 1990-06-22 | 1990-06-22 | Torsional vibration damper |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2245336A (en) |
| WO (1) | WO1992000470A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19528319C1 (en) * | 1995-08-02 | 1996-09-12 | Fichtel & Sachs Ag | Clutch disc for friction clutch |
| FR2769675A1 (en) * | 1997-10-11 | 1999-04-16 | Mannesmann Sachs Ag | Disc clutch for motor vehicles |
| FR2782360A1 (en) * | 1998-08-12 | 2000-02-18 | Mannesmann Sachs Ag | DEVICE FOR DAMPING TORSIONAL OSCILLATIONS FOR USE IN THE DRIVE OF A MOTOR VEHICLE |
| DE4243545C2 (en) * | 1992-12-22 | 2002-10-02 | Zf Sachs Ag | Clutch disc with double-row torsion damper |
| US20160084343A1 (en) * | 2014-09-19 | 2016-03-24 | Honda Motor Co., Ltd. | Damper unit of internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2010793B1 (en) * | 2006-04-19 | 2018-08-22 | Volvo Lastvagnar AB | A torsional vibration damper hub for a vehicle clutch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB394157A (en) * | 1932-08-06 | 1933-06-22 | Woerner Autoteile Heinrich | Improvements in rotary shock absorbers for torque transmission |
| GB981945A (en) * | 1962-02-12 | 1965-02-03 | Borg Warner | Vibration dampers |
| GB1047023A (en) * | 1962-08-17 | 1966-11-02 | Borg Warner | Vibration damper assembly |
| EP0047583A1 (en) * | 1980-09-10 | 1982-03-17 | Automotive Products Public Limited Company | Friction clutch driven plates |
| GB2128715A (en) * | 1982-10-13 | 1984-05-02 | Daikin Mfg Co Ltd | Damper disc |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3479906A (en) * | 1967-04-12 | 1969-11-25 | Gen Motors Corp | Tuned friction damper |
| JPS57107433A (en) * | 1980-12-22 | 1982-07-03 | Daikin Mfg Co Ltd | Damper disc |
-
1990
- 1990-06-22 GB GB9013974A patent/GB2245336A/en not_active Withdrawn
-
1991
- 1991-04-05 WO PCT/GB1991/000535 patent/WO1992000470A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB394157A (en) * | 1932-08-06 | 1933-06-22 | Woerner Autoteile Heinrich | Improvements in rotary shock absorbers for torque transmission |
| GB981945A (en) * | 1962-02-12 | 1965-02-03 | Borg Warner | Vibration dampers |
| GB1047023A (en) * | 1962-08-17 | 1966-11-02 | Borg Warner | Vibration damper assembly |
| EP0047583A1 (en) * | 1980-09-10 | 1982-03-17 | Automotive Products Public Limited Company | Friction clutch driven plates |
| GB2128715A (en) * | 1982-10-13 | 1984-05-02 | Daikin Mfg Co Ltd | Damper disc |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4243545C2 (en) * | 1992-12-22 | 2002-10-02 | Zf Sachs Ag | Clutch disc with double-row torsion damper |
| DE19528319C1 (en) * | 1995-08-02 | 1996-09-12 | Fichtel & Sachs Ag | Clutch disc for friction clutch |
| GB2303899A (en) * | 1995-08-02 | 1997-03-05 | Fichtel & Sachs Ag | Clutch disc assembly with wedges between torsion damping springs |
| GB2303899B (en) * | 1995-08-02 | 1998-12-16 | Fichtel & Sachs Ag | Clutch disc assembly with wedges between torsion damping springs |
| FR2769675A1 (en) * | 1997-10-11 | 1999-04-16 | Mannesmann Sachs Ag | Disc clutch for motor vehicles |
| US6095308A (en) * | 1997-10-11 | 2000-08-01 | Mannesmann Sachs Ag | Clutch plate for motor vehicle clutches |
| ES2158758A1 (en) * | 1997-10-11 | 2001-09-01 | Mannesmann Sachs Ag | Clutch plate for motor vehicle clutches |
| FR2782360A1 (en) * | 1998-08-12 | 2000-02-18 | Mannesmann Sachs Ag | DEVICE FOR DAMPING TORSIONAL OSCILLATIONS FOR USE IN THE DRIVE OF A MOTOR VEHICLE |
| US20160084343A1 (en) * | 2014-09-19 | 2016-03-24 | Honda Motor Co., Ltd. | Damper unit of internal combustion engine |
| US9644705B2 (en) * | 2014-09-19 | 2017-05-09 | Honda Motor Co., Ltd. | Damper unit of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1992000470A1 (en) | 1992-01-09 |
| GB9013974D0 (en) | 1990-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |