CN115839389A - Torsional vibration damper with torque limiter - Google Patents

Torsional vibration damper with torque limiter Download PDF

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Publication number
CN115839389A
CN115839389A CN202211156709.1A CN202211156709A CN115839389A CN 115839389 A CN115839389 A CN 115839389A CN 202211156709 A CN202211156709 A CN 202211156709A CN 115839389 A CN115839389 A CN 115839389A
Authority
CN
China
Prior art keywords
support member
torsional vibration
vibration damper
friction
damper
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.)
Pending
Application number
CN202211156709.1A
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Chinese (zh)
Inventor
马蒂厄·埃克
克里斯蒂安·巴尔曼
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.)
Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of CN115839389A publication Critical patent/CN115839389A/en
Pending legal-status Critical Current

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    • 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
    • F16F15/131—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 the rotating system comprising two or more gyratory masses
    • F16F15/139—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 the rotating system comprising two or more gyratory masses characterised by friction-damping means
    • F16F15/1397—Overload protection, i.e. means for limiting torque
    • 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
    • F16F15/131—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 the rotating system comprising two or more gyratory masses
    • F16F15/133—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 the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
    • F16F15/134—Wound springs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The invention relates to a torsional vibration damper (10) for transmitting torque between a drive element and a driven element and for reducing torsional vibrations, comprising: a damper input (14) which is rotatable about an axis of rotation (12); at least one spring element (16); a damper output (18) which can be twisted relative to the damper input (14) against the action of the spring element (16); a driven member (38) rotatable about a rotational axis (12) and connectable with a driven element via a toothing (72); a torque limiter (36) which is arranged effectively in series with respect to the spring element (16) in terms of torque transmission and limits the torque which can be transmitted between the damper input (14) and the driven member (38) via a friction region (40) which is preloaded with a contact force which is supported on a support member (50), wherein the support member (50) and the driven member (38) are formed in one piece.

Description

Torsional vibration damper with torque limiter
Technical Field
The present invention relates to a torsional vibration damper.
Background
DE 2018 119 505 A1 describes a torsional vibration damper with a torque limiter, which has two axially spaced-apart support members which are firmly connected to one another, at least one of which is directly fastened to a driven hub, wherein a support flange, which bears flat against a first support member, engages in a receiving channel which delimits the support members in the axial direction. At least one disk spring supported on the second support member presses the support disk flat against the support flange. Friction linings formed as friction disks are inserted between the support flange and the first support element and between the support flange and the support disk.
Disclosure of Invention
The aim of the invention is to design a torsional vibration damper in a cost-effective and space-saving manner.
At least one of these objects is achieved by a torsional vibration damper according to the invention. The torsional vibration damper can thus be constructed at low cost and with little installation space.
The torsional vibration damper may be provided in a powertrain of a vehicle. A torsional vibration damper may be associated with the hybrid module. The torsional vibration damper may be incorporated into the hybrid module. The hybrid module may be associated with a DHT (hybrid dedicated transmission). A torsional vibration damper may be connected upstream of the double clutch.
The torsional vibration damper can be designed as a dual mass flywheel. The dual-mass flywheel can be connected to the internal combustion engine on the input side.
The damper input may have a primary flywheel. The damper input may have a cover element. The primary flywheel may be fixedly connected with the cover element.
The spring element may be an arc spring and/or a compression spring. A plurality of spring elements may be provided on the circumferential side. The spring elements may all be arranged on the same diameter or on different diameters.
The spring element may be constituted by an outer spring and an inner spring. The spring element may have a one-stage or multi-stage spring characteristic.
The spring element may be arranged radially outside the friction area. The spring element and the friction region may be arranged axially overlapping.
The damper output may be an arcuate spring flange.
The torque limiter may reduce dynamic torque loading between the driving element and the driven element. The spring element can be better protected against overload. The torque limiter can be arranged on the output side of the damper, i.e. downstream of the spring element with respect to the torque transmission connection. The torque limiter can be designed as a slipping clutch. The contact pressure acting on the friction area for the friction-fit connection can be provided via a disk spring. The disk spring may be arranged radially inside the spring element.
The torque limiter may have a torque limiter input and a torque limiter output which is connected in a friction-fitting manner with the torque limiter input via a friction region. The torque limiter input and the torque limiter output can be operated synchronously with the applied torque up to the limit torque and can be rotated relative to one another if the limit torque is exceeded. The torque limiter input can be fixedly connected to the damper output, in particular formed in one piece.
The friction area may have a coating that increases the coefficient of friction. The friction zone may be operated dry or wet. The friction region can be located inside or outside an inner space, in which, for example, a spring element is arranged and in which a lubricant, for example a grease, is introduced.
The support element can rest directly on a spring element, for example a disk spring or a disk spring flange, which causes the pressing force. No contact pressure can occur through the support component to the axially adjacent component facing away from the friction area.
The driven element may be a driven shaft. The driven shaft may be a transmission input shaft.
The driven member may transmit torque between the friction region and the driven element. The driven member may fix the torque limiter at least in the axial direction. The driven member may have at least one through opening for threading the at least one screw element. The screw element can fix the torsional vibration damper to the internal combustion engine. The driven member may be stamped, heat treated, and/or surface treated. The driven member may be a casting.
The teeth can be produced in a broaching manner. The axial length of the teeth may be less than or greater than or equal to the diameter of the teeth.
In a preferred embodiment of the invention, it is advantageous if the driven member has a cylindrical region concentric to the axis of rotation, on which the toothing is formed. This can improve the torque transmission capability of the toothed section.
In a particular embodiment of the invention, it is advantageous if the cylindrical region has an inner circumference on which the toothing is formed. The toothing can be an internal toothing which can be connected to a mating toothing as external toothing.
In a particular embodiment of the invention, it is advantageous if the cylindrical region is formed radially inside on the driven component. Thereby, the cylindrical region may be arranged axially overlapping the torque limiter.
In an advantageous embodiment of the invention, it is provided that the contact pressure is supported via a further support element, which is connected to the support element, whereby the contact pressure is supported in a closed manner via the support element and the further support element. The load can thereby be limited to a small number of components of the torsional vibration damper by the contact pressure. The support member and the further support member can be connected to one another in a form-fitting, force-fitting and/or material-fitting manner.
A preferred embodiment of the invention is advantageous in which the support element is fixedly connected to the further support element via a riveted connection. The riveted connection may be arranged radially inside the friction region.
A preferred embodiment of the invention is advantageous in that the support element and the further support element form an axial intermediate region, within which the friction region is arranged. The torque limiter input may be axially received in the intermediate region. The friction region may be formed between the torque limiter input and the support member and/or a further support member.
In a preferred embodiment of the invention, it is provided that at least one friction surface of the friction region is formed on the support member and/or on a further support member. The friction surface can be an abutment surface for a friction lining or a surface of a friction lining. The friction lining can be fixed on the support member or on a further support member.
In a preferred embodiment of the invention, it is advantageous if the support element forms an abutment surface of the spring element for generating the contact pressure. The spring member may cause a pressing force onto the friction area. The spring member may be a disc spring or a disc spring flange.
In a particular embodiment of the invention, it is advantageous if the toothing is arranged axially overlapping the spring element. This reduces the axial installation space of the torsional vibration damper.
Further advantages and advantageous embodiments of the invention result from the description of the figures and the figures.
Drawings
The present invention is described in detail below with reference to the accompanying drawings. The figures show in detail:
fig. 1 shows a half section of a torsional vibration damper in a particular embodiment of the invention;
FIG. 2 shows a half section of a torsional vibration damper in another particular embodiment of the invention;
FIG. 3 shows a half section of a torsional vibration damper in another particular embodiment of the invention;
fig. 4 shows a further half section of the torsional vibration damper in fig. 3.
Detailed Description
Fig. 1 shows a half section of a torsional vibration damper in a particular embodiment of the invention. A torsional vibration damper 10 is provided in a vehicle for transmitting torque between a drive element, for example an internal combustion engine, and a driven element, for example a driven shaft, which can be connected to a dual clutch, and for reducing torsional vibrations.
The torsional vibration damper 10 includes: a damper input 14 which is rotatable about the axis of rotation 12; a plurality of spring elements 16; and a damper output 18 which can be twisted relative to the damper input 14 against the action of the spring element 16. The spring element 16 is preferably designed as an arc spring 20.
The torsional vibration damper 10 is in particular designed as a dual mass flywheel 22. The damper input 14 is formed by a primary flywheel 24 and a cover element 26 fixedly connected thereto. The damper input 14 is releasably connected to the drive element via a plurality of screw elements 28. Primary flywheel 24 has a ring gear 30 on the outer circumference.
The primary flywheel 24 and the cover element 26 form an inner chamber 32, within which the spring element 16 is arranged. The cavity 32 may be filled with a lubricant, such as grease. Spring element 16 is radially supported on primary flywheel 24 via a sliding cover 34.
The torque limiter 36 is arranged effectively in series downstream thereof with respect to the spring element 16 in terms of torque transmission. The torque limiter 36 is effectively disposed in series between the spring element 16 and a driven member 38, which may be connected with the driven element. The torque limiter 36 is designed to limit the torque that can be transmitted between the damper input 14 and the driven member 38 via a friction region 40. The friction region 40 is preloaded with a pressing force and thus brings about a friction-fit connection between the torque limiter input 42 and the torque limiter output 44, which are connected to one another in a synchronously rotating friction-fit manner via the friction region 40 up to a limit torque of the applied torque and are rotatable relative to one another when the limit torque is exceeded.
The contact pressure is applied by a spring via a torque limiter input 42, which is formed in one piece with the damper output 18, preferably as an arcuate spring flange 46. The torque limiter input 42 is preferably designed as a disk spring flange 48 and is accommodated axially between a support element 50, on which the contact pressure is supported, and a further support element 52, which likewise supports the contact pressure.
The disk spring flange 48 is introduced here with a preload in the axial center region 54.
The friction region 40 is formed radially outwardly on the disk spring flange 48 by a friction surface 56 facing the further support member 52 and on a mating friction surface 58 at the further support member 52, and radially inwardly on the disk spring flange 48 and on a mating friction surface 62 at the support member 50 by a friction surface 60 facing the support member 50. For example, the friction surfaces 56, 60 of the disk spring flange 48 can be formed by friction linings 64 fastened thereto.
The support member 50 and the further support member 52 are fixedly connected to each other by means of a riveted connection 66 provided radially inwardly of the friction region 40. The support member 50 is integrally formed with the driven member 38. A cylindrical region 68 concentric with the axis of rotation 12 is disposed radially inward on the driven member 38. The cylindrical region 68 has an inner circumference 70 on which teeth 72 are formed. The driven member 38 can be connected in a form-fitting manner via the toothing 72 to a driven shaft as a driven element. The driven shaft has a mating tooth corresponding to the tooth 72, which is preferably an internal tooth, as an external tooth. The toothing 72 is arranged axially overlapping the friction region 40 and the spring element 16.
A friction ring 74 is arranged axially between the primary flywheel 24 and the further support member 52 and a disk spring diaphragm 76 is arranged axially between the support member 50 and the cover element 26, said disk spring diaphragm being fixedly connected to the support member 50 and bearing with a preload on a friction ring 78 arranged on the cover element 26. Thereby bounding the interior chamber 32. The friction area 40 is disposed within the interior cavity 32.
The driven member 38 may transmit torque between the friction region 40 and the driven element. The driven member 38 has at least one through opening 80 for threading the respective screw element 28. As a result, torsional vibration damper 10 can be connected to the drive element and released therefrom.
Fig. 2 shows a half section of a torsional vibration damper in another particular embodiment of the invention. The construction of the torsional vibration damper 10 is similar to that in fig. 1 and the main differences to this should be mentioned below. The friction area 40 is arranged outside the interior 32, within which the spring element 16 is arranged. The interior 32 is delimited axially between the primary flywheel 24 and the damper output 18 by a friction ring 74 and a disk spring 82 which is arranged axially between a friction ring 78 arranged on the damper output 18 and the cover element 26.
The friction region 40 is arranged in an axial intermediate region 54 axially between the support member 50 and the further support member 52 and is formed by a friction surface 56 on the torque limiter input 42 and a mating friction surface 58 on the further support member 52, and by a friction surface 60 on the opposite side on the torque limiter input 42 and a mating friction surface 62 on the pressure element 84. For this purpose, the pressing element 84 and the further support member 52 each have a friction lining 64 which forms the friction surfaces 56, 60.
The friction area 40 is acted upon by the contact pressure provided by the disk spring 86 in order to form a friction-fit connection between the torque limiter input 42 and the torque limiter output 44 for transmitting torque. The disk spring 86 is introduced axially between the pressing element 84 and an abutment surface 88 on the support member 50 with a preload and the pressing force is supported on the one hand on the further support member 52 and on the other hand on the abutment surface 88 of the support member 50.
Fig. 3 shows a half section of a torsional vibration damper in another particular embodiment of the invention. The torsional vibration damper 10 in fig. 3 and 4 is similar to the torsional vibration damper in fig. 2 and the following main differences exist. The torque limiter input 42 is designed as a disk spring flange 48 and is accommodated with a preload between the support member 50 and the further support member 52 in an axial intermediate region 54. The torque limiter input 42 forms a friction surface 56, which can be connected in a friction-fitting manner to a mating friction surface 58 formed by a friction lining 64. The friction lining is fixedly connected with the further support member 52. On the axially opposite side, the torque limiter input 42 has a further friction surface 60, which can be connected in a friction-fitting manner with a mating friction surface 62 formed by a friction lining 64. The friction lining 64 is fixed to the support member 50.
By the disk spring flange 48 being arranged with a preload, the mating friction surface 58 of the friction lining 64 is arranged radially on the outside on the further support member 52 and the mating friction surface 62 of the friction lining 64 is arranged radially on the inside on the support member 50. The opposite arrangement is also possible.
List of reference numerals
10. Torsional vibration damper
12. Axis of rotation
14. Input end of shock absorber
16. Spring element
18. Output end of vibration damper
20. Arc spring
22. Dual mass flywheel
24. Primary flywheel
26. Cover element
28. Screwing element
30. Toothed ring
32. Inner cavity
34. Sliding cover
36. Torque limiter
38. Driven member
40. Friction area
42. Input end of torque limiter
44. Output end of torque limiter
46. Arc spring flange
48. Disk spring flange
50. Supporting member
52. Additional support member
54. Axial middle area
56. Friction surface
58. Matching friction surface
60. Friction surface
62. Matching friction surface
64. Friction lining
66. Riveting connecting piece
68. Columnar region
70. Inner ring circumference
72. Toothed section
74. Friction ring
76. Disk spring diaphragm
78. Friction ring
80. Through opening
82. Disc spring
84. Pressing element
86. Disc spring
88. A contact surface.

Claims (10)

1. A torsional vibration damper (10) for transmitting torque between a driving element and a driven element and for reducing torsional vibrations, the torsional vibration damper having:
a damper input (14) which is rotatable about an axis of rotation (12);
at least one spring element (16);
a damper output (18) which can be twisted relative to the damper input (14) against the action of the spring element (16);
a driven member (38) rotatable about the axis of rotation (12) and connectable with the driven element via a tooth (72);
a torque limiter (36) which is arranged effectively in series with respect to the spring element (16) in terms of torque transmission and which limits the torque which can be transmitted between the damper input (14) and the driven member (38) via a friction region (40) which is prestressed with a contact force, wherein the contact force is supported on a support member (50),
it is characterized in that the preparation method is characterized in that,
the support member (50) and the driven member (38) are integrally formed.
2. The torsional vibration damper (10) of claim 1,
it is characterized in that the preparation method is characterized in that,
the driven member (38) has a cylindrical region (68) concentric to the axis of rotation (12), on which the toothing (72) is formed.
3. The torsional vibration damper (10) of claim 2,
it is characterized in that the preparation method is characterized in that,
the cylindrical region (68) has an inner circumference (70) on which the teeth (72) are formed.
4. The torsional vibration damper (10) of claim 2 or 3,
it is characterized in that the preparation method is characterized in that,
the cylindrical region (68) is formed radially inward on the driven member (38).
5. Torsional vibration damper (10) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the contact pressure is supported via a further support member (52) which is connected to the support member (50), whereby the contact pressure is supported in a closed manner via the support member (50) and the further support member (52).
6. The torsional vibration damper (10) of claim 5,
it is characterized in that the preparation method is characterized in that,
the support member (50) is fixedly connected with the further support member (52) via a riveted connection (66).
7. The torsional vibration damper (10) of claim 5 or 6,
it is characterized in that the preparation method is characterized in that,
the support member (50) and the further support member (52) form an axial intermediate region (54), the friction region (40) being arranged within the axial intermediate region.
8. The torsional vibration damper (10) of claim 7,
it is characterized in that the preparation method is characterized in that,
at least one friction surface (56, 60) of the friction region (40) is formed on the support member (50) and/or on the further support member (52).
9. Torsional vibration damper (10) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the support element (50) forms an abutment surface (88) for a spring element (86).
10. Torsional vibration damper (10) according to one of the preceding claims,
the toothing (72) is arranged axially overlapping the spring element (16).
CN202211156709.1A 2021-09-22 2022-09-22 Torsional vibration damper with torque limiter Pending CN115839389A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021124462.5 2021-09-22
DE102021124462.5A DE102021124462A1 (en) 2021-09-22 2021-09-22 Torsional vibration damper with a torque limiter

Publications (1)

Publication Number Publication Date
CN115839389A true CN115839389A (en) 2023-03-24

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ID=85383561

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211156709.1A Pending CN115839389A (en) 2021-09-22 2022-09-22 Torsional vibration damper with torque limiter

Country Status (2)

Country Link
CN (1) CN115839389A (en)
DE (1) DE102021124462A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022129399A1 (en) 2022-11-08 2024-05-08 Schaeffler Technologies AG & Co. KG Torque limiter with friction linings fixed to the carrier flange

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018119505A1 (en) 2018-06-08 2019-12-12 Schaeffler Technologies AG & Co. KG Torque limiter for a torsional vibration damper

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