WO2010032915A1 - Damper flywheel - Google Patents

Damper flywheel Download PDF

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Publication number
WO2010032915A1
WO2010032915A1 PCT/KR2009/002818 KR2009002818W WO2010032915A1 WO 2010032915 A1 WO2010032915 A1 WO 2010032915A1 KR 2009002818 W KR2009002818 W KR 2009002818W WO 2010032915 A1 WO2010032915 A1 WO 2010032915A1
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WO
WIPO (PCT)
Prior art keywords
guide
type
arc
mixed
mid
Prior art date
Application number
PCT/KR2009/002818
Other languages
French (fr)
Other versions
WO2010032915A9 (en
Inventor
Heerak Lee
Mandae Hur
Joonseok Lee
Original Assignee
Pyong Hwa Valeo Co., Ltd.
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
Priority claimed from KR1020080092269A external-priority patent/KR101011111B1/en
Priority claimed from KR1020090001109A external-priority patent/KR101027893B1/en
Application filed by Pyong Hwa Valeo Co., Ltd. filed Critical Pyong Hwa Valeo Co., Ltd.
Publication of WO2010032915A1 publication Critical patent/WO2010032915A1/en
Publication of WO2010032915A9 publication Critical patent/WO2010032915A9/en

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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
    • F16F15/133—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
    • F16F15/1343—Wound springs characterised by the spring mounting
    • F16F15/13438—End-caps for springs
    • 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
    • F16F15/1343—Wound springs characterised by the spring mounting
    • F16F15/13453—Additional guiding means for springs

Definitions

  • the present invention relates to a damper flywheel and more particularly, to a structure of a damper flywheel which receives power from a power supplier that supplies a rotational force accompanied with a rotational vibration, such as an engine and transmits the power to a rotational load such as a power train of a vehicle after reducing the rotational vibration.
  • the vehicle When the damper flywheel is mounted on the vehicle, the vehicle has a mechanism in which a primary wheel directly connected to the crankshaft of the engine and a secondary wheel drawing the power through a clutch are basically provided, and a spring, a friction washer, etc. are mounted therebetween so as to damp each other.
  • the spring is installed in a damping space formed by the primary wheel and a primary wheel cover and is extended between a drive plate directly to the secondary wheel and the primary wheel to transmit the power between the primary wheel and the secondary wheel and damp a torque variation therebetween.
  • the spring since the spring must frequently extend in the damping space, the spring must have sufficient durability. Further, since a general characteristic provided by the damper flywheel depends on a damping characteristic, the spring must have wide and smooth damping characteristics in order to implement the damper flywheel that can appropriately deal with various fluctuations in a general driving range of the engine and an applied load.
  • noise or vibration is not generated from the spring while the spring is extended.
  • the present invention is contrived by the above-mentioned necessity.
  • a damper flywheel of the present invention includes a primary wheel that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space which forms a concentric shaft with a rotary shaft of the rotational force therein; a secondary wheel that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel and is connected to draw power to a rotational load; and an elastic unit that is disposed in the damping space to supply an elastic force in response to the comparative rotation of the primary wheel and the secondary wheel, wherein the elastic unit includes one or more coil springs and two or more slide guides that are provided with a pressing unit that supports an end of the coil spring, are installed to be slidable on an arc-type trajectory of the damping space, and are inserted or drawn while being inter-guided on the arc-type trajectory.
  • the slide guide of the elastic unit may include: a guide body that elongates on the arc-type trajectory of the damping space and supports an outer surface of the coil spring; and the pressing unit that projects toward a rotation center shaft of the primary wheel from the guide body to press the end of the coil spring.
  • the guide body of the slide guide may include any one of a projection type that is provided with a projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide; a groove type that is provided with a groove portion which is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted; and a mixed type that is provided with the projection portion or the groove portion at both sides thereof, respectively, or the projection portion and the groove portion together at both sides thereof.
  • the slide guide of the elastic unit may be constituted by the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space.
  • the projection portion that projects on the arc-type trajectory of the damping space may be provided in any one guide body of the two end guides to be inter-guided and inserted and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, may be provided in the guide body of the other end guide.
  • the slide guide of the elastic unit may include: the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space; and one or more mid-guides that are disposed between the two end guides, wherein the coil springs of a number less than a total number of the end guides and the mid-guides by one are disposed in series.
  • the guide body of the end guide may include any one of the projection portion that projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of the adjacent mid-guide and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, and the guide body of the mid-guide may have any one type of a first mixed type that is provided with the projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide and the groove portion which is recessed on the arc-type trajectory of the damping space at both sides thereof; a second mixed type that is provided with the projection portions at both sides thereof; and a third mixed type that is provided with the groove portions at both sides thereof.
  • the slide guide may include: one end guide that is provided with the groove portion; a first mixed-type mid guide that is disposed adjacent to the end guide; a second mixed-type mid guide that is disposed adjacent to the first mixed-type mid-guide; and the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
  • the slide guide may include: one end guide that is provided with the projection portion; a third mixed-type mid-guide that is disposed adjacent to the end guide; a first mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and the other end guide that provided with the projection portion, which is disposed adjacent to the first mixed-type mid-guide.
  • the slide guide may include: one end guide that is provided with the projection portion; a third mixed-type mid-guide that is disposed adjacent to the end guide; a second mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
  • a maximum depth of the projection portion constituting the guide body, which is inserted and guided into the groove portion of another adjacent guide body may be set to a length within an elastic deformation range of the coil spring that is disposed between the pressing units of the two guide bodies.
  • the projection portion of another adjacent guide body may be inserted into the groove portion of the guide body by two or more fork units that are disposed in line in the direction of a rotational axis of the primary wheel.
  • a plurality of coil springs that are provided in the elastic unit may have different elastic coefficients.
  • the coil spring that is provided in the elastic unit may be constituted by an arc-type coil spring that elongates on the arc-type trajectory of the damping space.
  • One or more lubrication grooves may be provided at a portion where the slide guide is in contact with the primary wheel that constitutes the damping space in the slide guide to contain oil by being recessed on the surface of the slide guide.
  • the guide body may include a plurality of extension grooves that are formed on an outer radial direction of the guide body and are extensively deformable in a circumferential direction of the guide body.
  • the extension grooves that are formed in the guide body may be formed in a slit type in which both surfaces of the guide body are penetrated and connected to each other, and a pivot portion which is an internal end of the guide body of the extension groove may be formed of a constantly circular cross section in a rotational axis direction of the primary wheel so as to minimize local stress concentration and maintain elasticity.
  • the present invention can stably secure durability of a coil spring which extends in a damping space formed by the primary wheel, implement wide and smooth damping characteristics of the coil spring, reduce noise, vibration, friction, etc. which are accompanied while the coil spring is extended, and easily establish the damping characteristics of the coil spring in response to an environment in which the damper flywheel is adopted.
  • the present invention allows a slide guide that guides the movement of a coil spring in a damping space between a primary wheel and a primary wheel cover to have a comparatively larger stopper torque to secure a more smooth damping performance at the time when a damper flywheel performs a damping operation, is more resistant to an applied shock, has improved durability by enhancing a lubrication performance to remarkably reduce an abrasion, and reduces noise while operation.
  • FIG. 1 is a diagram illustrating a structure of a damper flywheel according to the present invention
  • FIG. 2 is a cross-sectional view of a damper flywheel taken along line II-II of FIG. 1;
  • FIG. 3 is a diagram illustrating structures of slide guides adopted in a damper flywheel of FIG. 1;
  • FIG. 4 is a perspective view of an end guide which is one among slide guides of FIG. 3;
  • FIG. 5 is a perspective view of a first mixed mid-guide which is one among slide guides of FIG. 3;
  • FIG. 6 is a perspective view of a second mixed mid-guide which is one among slide guides of FIG. 3;
  • FIG. 7 is a diagram illustrating an assembling state of slide guides and a coil spring of FIG. 3;
  • FIGS. 8 to 10 are diagrams illustrating various embodiments of slide guides of the present invention and concept diagrams in which the slide guides are linearly spread;
  • FIGS. 11 and 12 are diagrams illustrating an embodiment in which an extension groove is further provided in a slide guide.
  • an embodiment of the present invention includes a primary wheel 3 that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space 1 which forms a concentric shaft with a rotary shaft of the rotational force therein, a secondary wheel 5 that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel 3 and is connected to draw power to a rotational load, an elastic unit 7 that is disposed in the damping space 1 to supply an elastic force in response to the comparative rotation of the primary wheel 3 and the secondary wheel 5, wherein the elastic unit 7 includes one or more coil springs 9 and two or more slide guides 13 that are provided with a pressing unit 11 that supports an end of the coil spring 9, are installed to be slidable on an arc-type trajectory of the damping space 1, and are inserted or drawn while being inter-guided on the arc-type trajectory.
  • the power supplier may adopt a device such as an electric motor, but generally adopts an engine, which is an internal combustion engine that acquires the power by an explosion stroke of fuel.
  • the rotational load will be a power train of the entire vehicle including a clutch and a transmission, and a driving wheel of the vehicle, which is connected to the clutch and transmission.
  • the primary wheel 3 is connected to a crankshaft of the engine and the secondary wheel 5 is connected to the clutch that is connected with the transmission.
  • the damping space 1 is formed as a substantially doughnut-shaped space by the primary wheel 3 and a wheel cover 15 joined to the primary wheel 3.
  • the secondary wheel 5 is connected to a drive plate 17 that is installed in the damping space 1, such that the elastic unit 7 is substantially extended by comparative rotation of the drive plate 17 and the primary wheel 3.
  • the damping space 1 may be divided into a plurality of spaces in a circumferential direction. In FIG. 1, two damping spaces are formed in the circumferential direction. Of course, the damping space may be configured by only one damping space or may be divided into three or more damping spaces. Therefore, in the case of the elastic unit 7, one elastic unit 7 is mounted in each damping space 1 depending on the number of the damping spaces 1.
  • a friction washer, an elastic washer, etc. are installed between the primary wheel 3 and the secondary wheel 5 to provide a friction force while the comparative rotation between the primary wheel 3 and the secondary wheel 5, thereby implementing the damping operation together with the extension of the elastic unit 7. Since a mechanism of providing the friction force is substantially the same as the related art, detailed description thereof will be omitted.
  • the slide guide 13 of the elastic unit 7 includes a guide body 19 that elongates on the arc-type trajectory of the damping space 1 to support an outer surface of the coil spring 9 and the pressing unit 11 that projects toward a rotation center shaft of the primary wheel 3 from the guide body 19 to press the end of the coil spring 9.
  • the external surface of the coil spring 9, which is supported by the slide guide 13 is a part where the coil spring 9 is in contact with an inner surface that forms the damping space 1 of the primary wheel 3 by receiving a centrifugal force by the rotation of the primary wheel 3 if the slide guide 13 is not provided.
  • the guide body 19 of the slide guide 13 has any one of a projection type that is provided with a projection portion 21 which projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of another adjacent slide guide 13; a groove type that is provided with a groove portion 23 which is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted; and a mixed type that is provided with the projection portion 21 or the groove portion 23 at both sides thereof, respectively, or the projection portion 21 and the groove portion 23 together at both sides thereof.
  • the slide guide 13 having the groove-type guide body is shown in FIG. 4, the slide guide 13 having the mixed-type guide body is shown in FIGS. 5 and 6, and the slide guide 13 having the projection-type guide body is shown at the right side of FIG. 8.
  • the slide guide 13 generally represents all slide guides having the projection-type, groove-type, and mixed-type guide bodies 19 as classification depending on the shape thereof as described above.
  • the slide guide 13 generally represents end guides 25 that are installed at both ends of the elastic unit 7 and all mid-guides 27 that are positioned between the end guides 25 as classification depending on the installation position thereof.
  • the slide guide 13 of the elastic unit 7 is constituted by the end guides 25 that are installed at both ends of the elastic unit 7 and respectively positioned at both ends of the arc-type trajectory of the damping space 1.
  • the projection portion 21 that projects on the arc-type trajectory of the damping space 1 is provided in any one guide body 19 of the two end guides 25 to be inter-guided and inserted and the groove portion 23 that is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted, is provided in the guide body 19 of the other end guide 25.
  • the slide guide 13 of the elastic unit 7 includes the end guides 25 that are installed at both ends of the elastic unit 7 and respectively positioned at both ends of the arc-type trajectory of the damping space 1 and one or more mid-guides 27 that are disposed between the two end guides 25, wherein the coil springs 9 of a number less than a total number of the end guides 25 and the mid-guides 27 by one are disposed in series.
  • the guide body 19 of the end guide 25 includes any one of the projection portion 21 that projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of the adjacent mid-guide 27 and the groove portion 23 that is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted.
  • the guide body 19 of the mid-guide 27 has any one type of a first mixed type that is provided with the projection portion 21 which projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of another adjacent slide guide 13 and the groove portion 23 which is recessed on the arc-type trajectory of the damping space 1 at both sides thereof, into which the projection portion 21 is inserted; a second mixed type that is provided with the projection portions 21 at both sides thereof; and a third mixed type that is provided with the groove portions 23 at both sides thereof.
  • the end guides 25 are provided at both ends of the elastic unit 7 and the mixed-type mid-guides 27 are disposed between the two end guides 25 one by one.
  • the end guides 25 may be formed of the groove type or the projection type and the mid-guides 27 is only the mixed type, but the types of the mid-guides 27 may be any one selected from the three types of the first mixed type, the second mixed type, and the third mixed type as shown in the figure.
  • the shape of the end guides 25 and the mid-guides 27 has a structure similar to one chain in which one end guide 25 to the other end guide 25 through the mid-guide 27 are connected to slide and guide to each other on a circumferential trajectory of the damping space 1.
  • the slide guide 13 is provided with two mid-guides 27.
  • the slide guide 13 includes one end guide 25 that is provided with the groove portion 23 from a left side thereof, a first mixed-type mid guide 27 that is disposed adjacent to the end guide 25, a second mixed-type mid guide 27 that is disposed adjacent to the first mixed-type mid-guide 27, and the other end guide 25 provided with the groove portion 23, which is disposed adjacent to the second mixed-type mid-guide 27. Therefore, this structure is adopted in FIGS. 1 to 7.
  • the slide guide 13 includes one end guide 25 that is provided with the projection portion 21 from the left side thereof, a third mixed-type mid-guide 27 that is disposed adjacent to the end guide 25, a first mixed-type mid-guide 27 that is disposed adjacent to the third mixed-type mid-guide 27, and the other end guide 25 provided with the projection portion 21, which is disposed adjacent to the first mixed-type mid-guide 27.
  • the slide guide 13 includes one end guide 25 that is provided with the projection portion 21 from the left side thereof, a third mixed-type mid-guide 27 that is disposed adjacent to the end guide 25, a second mixed-type mid-guide 27 that is disposed adjacent to the third mixed-type mid-guide 27, and the other end guide 25 provided with the groove portion 23, which is disposed adjacent to the second mixed-type mid-guide 27.
  • a maximum depth of the projection portion 21 constituting the guide body 19, which is inserted and guided into the groove portion 23 of another adjacent guide body 19 is set to a length within an elastic deformation range of the coil spring 9 that is disposed between the pressing units 11 of the two guide bodies 19.
  • a length indicated as 'a' in FIG. 3 means a maximum stroke of the projection portion 21 of the first mixed-type mid-guide 27 which can be inserted into the groove portion 23 of the groove-type end guide 25.
  • a shrinkage state of the coil spring 9 that is installed between the first mixed-type mid-guide 27 and the groove-type end guide 25 does not exceed an elastic deformation limit even in the insertion state at the maximum stroke, such that the coil spring 9 is not plastically deformed. Therefore, 'a' is configured to secure the durability of the coil spring 9.
  • 'b' and 'c' of FIG. 3 are configured to improve the durability of the coil spring 9 by preventing the coil springs 9 installed in the corresponding portions from being plastically deformed.
  • the projection portion 21 of another adjacent guide body 19 is inserted into the groove portion 23 of the guide body 19 by two or more fork units 29 that are disposed in line in the direction of a rotational axis of the primary wheel 3.
  • the projection portion 21 of the guide body 19 also moves together with the coil spring 9 while supporting the coil spring 9 by only a width of the projection portion 21 which is inserted into the groove portion 23, the projection portion 21 of the guide body 19 also contributes to minimize the contact and interference between the guide body 19 and the coil spring 9 while the coil spring 9 extends.
  • the plurality of coil springs 9 preferably have different elastic coefficients.
  • the damping characteristic exhibited while the elastic unit 7 extends is formed with multi-stages by the elastic coefficient of each coil spring 9, such that the damping characteristic exhibits smooth and wide damping effects in respect to a comparatively smaller shock to a larger shock.
  • the damper flywheel can be easily optimized to an environment where the damper flywheel will be mounted.
  • the coil spring 9 that is provided in the elastic unit 7 is preferably constituted by an arc-type coil spring 9 that elongates on the arc-type trajectory of the damping space 1.
  • the arc-type coil spring 9 tracing the arc-type trajectory of the damping space 1 constantly extends on the arc-type trajectory even when an external force is not applied.
  • One or more lubrication grooves 31 may be provided at a portion of the slide guide 13 that is in contact with the primary wheel 3 that constitutes the damping space 1 13 to contain oil by being recessed on the surface of the slide guide 13. Therefore, friction and abrasion between the slide guide 13 and the primary wheel 3 can be reduced by the lubrication grooves 31.
  • the slide guide 13 may include a plurality of extension grooves 33 that are formed on an outer radial direction of the guide body 19 and are extensively deformable in a circumferential direction of the guide body 19 as shown in FIGS. 11 and 12.
  • extension grooves 33 that are formed in the guide body 19 are formed in a slit type in which both surfaces of the guide body 19 are penetrated and connected to each other
  • the guide body 19 can damp a load applied to the guide body 19 of the slide guide 13 in the circumferential direction while extending by the extension grooves 33.
  • a pivot portion which is an internal end of the guide body 19 of the extension groove 33 is preferably formed of a constant circular cross section in a rotational axis direction of the primary wheel 3 so as to minimize local stress concentration and maintain elasticity.
  • the extension groove 33 is generally formed at only a portion corresponding to the projection portions 21 of the guide body 19 and the extension groove 33 is not formed at a portion corresponding to the groove portion 23 due to rigidity, but the extension groove 33 may be provided in the groove portion 23.
  • the slide guide 13 itself can provide the elastic force while extending to increase a stopper torque, thereby securing a more smooth damping performance in the damping operation of the damper flywheel.
  • the stopper torque is a maximum torque which can be applied between the primary wheel 3 and the secondary wheel 5.
  • the slide guide 13 serves to set a maximum angle to allow the primary wheel 3 and the secondary wheel 5 to inter-rotate to limit an extension range of the coil spring 9 to a predetermined level, such that the slide guide 13 must cope with the stopper torque which is the maximum torque applied between the primary wheel 3 and the secondary wheel 5.
  • the extension groove 33 grants the elastic force to the slide guide 13 itself to increase an upper limit of the stopper torque which the slide guide 13 can support.
  • the load acting on the coil spring 9 that guides to the slide guide 13 can be reduced, a cost required to configure the coil spring 9 can be reduced and the more smooth damping operation can be performed.
  • the guide body 19 itself of the slide guide 13 absorbs the shock while being elastically deformed, the slide guide 13 with the guide body 19 can have improved durability in comparison with a slide guide with a simple guide body without the extension groove 33.
  • extension groove 33 is always filled with grease, lubricity of the slide guide 13 is enhanced, such that the abrasion is remarkably reduced, the noise is reduced, and the durability is improved.

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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)
  • Springs (AREA)

Abstract

A damper flywheel, comprising: a primary wheel (3) that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space (1) which forms a concentric shaft with a rotary shaft of the rotational force therein; a secondary wheel (5) that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel (3) and is connected to draw power to a rotational load; and an elastic unit (7) that is disposed in the damping space (1) to supply an elastic force in response to the comparative rotation of the primary wheel (3) and the secondary wheel (5), wherein the elastic unit (7) includes one or more coil springs (9) and two or more slide guides (13) that are provided with a pressing unit (11) that supports an end of the coil spring (9), are installed to be slidable on an arc-type trajectory of the damping space (1), and are inserted or drawn while being inter-guided on the arc-type trajectory.

Description

DAMPER FLYWHEEL
The present invention relates to a damper flywheel and more particularly, to a structure of a damper flywheel which receives power from a power supplier that supplies a rotational force accompanied with a rotational vibration, such as an engine and transmits the power to a rotational load such as a power train of a vehicle after reducing the rotational vibration.
In the case of an engine, since an explosion stroke for producing power is not continuous but intermittent, power outputted from a crankshaft is accompanied with a rotational vibration. Therefore, a flywheel is used in order to reduce the rotational vibration and obtain a stable rotational output. Recently, a damper flywheel that reduces the rotational vibration with two mass bodies has been adopted in order to uniformly cope with a wide rotational speed range of the engine and more stably accommodate various torque changes depending on a load.
When the damper flywheel is mounted on the vehicle, the vehicle has a mechanism in which a primary wheel directly connected to the crankshaft of the engine and a secondary wheel drawing the power through a clutch are basically provided, and a spring, a friction washer, etc. are mounted therebetween so as to damp each other.
The spring is installed in a damping space formed by the primary wheel and a primary wheel cover and is extended between a drive plate directly to the secondary wheel and the primary wheel to transmit the power between the primary wheel and the secondary wheel and damp a torque variation therebetween.
Therefore, since the spring must frequently extend in the damping space, the spring must have sufficient durability. Further, since a general characteristic provided by the damper flywheel depends on a damping characteristic, the spring must have wide and smooth damping characteristics in order to implement the damper flywheel that can appropriately deal with various fluctuations in a general driving range of the engine and an applied load.
In addition, it is preferable that noise or vibration is not generated from the spring while the spring is extended.
The present invention is contrived by the above-mentioned necessity. There is an object of the present invention to provide a damper flywheel that can stably secure durability of a spring which extends in a damping space, implement wide and smooth damping characteristics of the spring, reduce noise, vibration, friction, etc. which are accompanied by the extension operation of the spring, and easily establish the damping characteristics of the spring in response to an environment in which the damper flywheel is adopted.
The present invention is contrived to achieve the above-mentioned object. A damper flywheel of the present invention includes a primary wheel that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space which forms a concentric shaft with a rotary shaft of the rotational force therein; a secondary wheel that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel and is connected to draw power to a rotational load; and an elastic unit that is disposed in the damping space to supply an elastic force in response to the comparative rotation of the primary wheel and the secondary wheel, wherein the elastic unit includes one or more coil springs and two or more slide guides that are provided with a pressing unit that supports an end of the coil spring, are installed to be slidable on an arc-type trajectory of the damping space, and are inserted or drawn while being inter-guided on the arc-type trajectory.
The slide guide of the elastic unit may include: a guide body that elongates on the arc-type trajectory of the damping space and supports an outer surface of the coil spring; and the pressing unit that projects toward a rotation center shaft of the primary wheel from the guide body to press the end of the coil spring.
The guide body of the slide guide may include any one of a projection type that is provided with a projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide; a groove type that is provided with a groove portion which is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted; and a mixed type that is provided with the projection portion or the groove portion at both sides thereof, respectively, or the projection portion and the groove portion together at both sides thereof.
The slide guide of the elastic unit may be constituted by the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space.
The projection portion that projects on the arc-type trajectory of the damping space may be provided in any one guide body of the two end guides to be inter-guided and inserted and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, may be provided in the guide body of the other end guide.
The slide guide of the elastic unit may include: the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space; and one or more mid-guides that are disposed between the two end guides, wherein the coil springs of a number less than a total number of the end guides and the mid-guides by one are disposed in series.
The guide body of the end guide may include any one of the projection portion that projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of the adjacent mid-guide and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, and the guide body of the mid-guide may have any one type of a first mixed type that is provided with the projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide and the groove portion which is recessed on the arc-type trajectory of the damping space at both sides thereof; a second mixed type that is provided with the projection portions at both sides thereof; and a third mixed type that is provided with the groove portions at both sides thereof.
The slide guide may include: one end guide that is provided with the groove portion; a first mixed-type mid guide that is disposed adjacent to the end guide; a second mixed-type mid guide that is disposed adjacent to the first mixed-type mid-guide; and the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
The slide guide may include: one end guide that is provided with the projection portion; a third mixed-type mid-guide that is disposed adjacent to the end guide; a first mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and the other end guide that provided with the projection portion, which is disposed adjacent to the first mixed-type mid-guide.
The slide guide may include: one end guide that is provided with the projection portion; a third mixed-type mid-guide that is disposed adjacent to the end guide; a second mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
A maximum depth of the projection portion constituting the guide body, which is inserted and guided into the groove portion of another adjacent guide body may be set to a length within an elastic deformation range of the coil spring that is disposed between the pressing units of the two guide bodies.
The projection portion of another adjacent guide body may be inserted into the groove portion of the guide body by two or more fork units that are disposed in line in the direction of a rotational axis of the primary wheel.
A plurality of coil springs that are provided in the elastic unit may have different elastic coefficients.
The coil spring that is provided in the elastic unit may be constituted by an arc-type coil spring that elongates on the arc-type trajectory of the damping space.
One or more lubrication grooves may be provided at a portion where the slide guide is in contact with the primary wheel that constitutes the damping space in the slide guide to contain oil by being recessed on the surface of the slide guide.
The guide body may include a plurality of extension grooves that are formed on an outer radial direction of the guide body and are extensively deformable in a circumferential direction of the guide body.
The extension grooves that are formed in the guide body may be formed in a slit type in which both surfaces of the guide body are penetrated and connected to each other, and a pivot portion which is an internal end of the guide body of the extension groove may be formed of a constantly circular cross section in a rotational axis direction of the primary wheel so as to minimize local stress concentration and maintain elasticity.
The present invention can stably secure durability of a coil spring which extends in a damping space formed by the primary wheel, implement wide and smooth damping characteristics of the coil spring, reduce noise, vibration, friction, etc. which are accompanied while the coil spring is extended, and easily establish the damping characteristics of the coil spring in response to an environment in which the damper flywheel is adopted.
Further, the present invention allows a slide guide that guides the movement of a coil spring in a damping space between a primary wheel and a primary wheel cover to have a comparatively larger stopper torque to secure a more smooth damping performance at the time when a damper flywheel performs a damping operation, is more resistant to an applied shock, has improved durability by enhancing a lubrication performance to remarkably reduce an abrasion, and reduces noise while operation.
FIG. 1 is a diagram illustrating a structure of a damper flywheel according to the present invention;
FIG. 2 is a cross-sectional view of a damper flywheel taken along line II-II of FIG. 1;
FIG. 3 is a diagram illustrating structures of slide guides adopted in a damper flywheel of FIG. 1;
FIG. 4 is a perspective view of an end guide which is one among slide guides of FIG. 3;
FIG. 5 is a perspective view of a first mixed mid-guide which is one among slide guides of FIG. 3;
FIG. 6 is a perspective view of a second mixed mid-guide which is one among slide guides of FIG. 3;
FIG. 7 is a diagram illustrating an assembling state of slide guides and a coil spring of FIG. 3;
FIGS. 8 to 10 are diagrams illustrating various embodiments of slide guides of the present invention and concept diagrams in which the slide guides are linearly spread; and
FIGS. 11 and 12 are diagrams illustrating an embodiment in which an extension groove is further provided in a slide guide.
Referring to FIGS. 1 to 7, an embodiment of the present invention includes a primary wheel 3 that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space 1 which forms a concentric shaft with a rotary shaft of the rotational force therein, a secondary wheel 5 that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel 3 and is connected to draw power to a rotational load, an elastic unit 7 that is disposed in the damping space 1 to supply an elastic force in response to the comparative rotation of the primary wheel 3 and the secondary wheel 5, wherein the elastic unit 7 includes one or more coil springs 9 and two or more slide guides 13 that are provided with a pressing unit 11 that supports an end of the coil spring 9, are installed to be slidable on an arc-type trajectory of the damping space 1, and are inserted or drawn while being inter-guided on the arc-type trajectory.
The power supplier may adopt a device such as an electric motor, but generally adopts an engine, which is an internal combustion engine that acquires the power by an explosion stroke of fuel. For example, in the case when the power supplier is adopted in a vehicle, the rotational load will be a power train of the entire vehicle including a clutch and a transmission, and a driving wheel of the vehicle, which is connected to the clutch and transmission.
That is, in the case when a damper clutch of the present invention is adopted in the vehicle, the primary wheel 3 is connected to a crankshaft of the engine and the secondary wheel 5 is connected to the clutch that is connected with the transmission.
The damping space 1 is formed as a substantially doughnut-shaped space by the primary wheel 3 and a wheel cover 15 joined to the primary wheel 3. The secondary wheel 5 is connected to a drive plate 17 that is installed in the damping space 1, such that the elastic unit 7 is substantially extended by comparative rotation of the drive plate 17 and the primary wheel 3.
The damping space 1 may be divided into a plurality of spaces in a circumferential direction. In FIG. 1, two damping spaces are formed in the circumferential direction. Of course, the damping space may be configured by only one damping space or may be divided into three or more damping spaces. Therefore, in the case of the elastic unit 7, one elastic unit 7 is mounted in each damping space 1 depending on the number of the damping spaces 1.
Besides, a friction washer, an elastic washer, etc. are installed between the primary wheel 3 and the secondary wheel 5 to provide a friction force while the comparative rotation between the primary wheel 3 and the secondary wheel 5, thereby implementing the damping operation together with the extension of the elastic unit 7. Since a mechanism of providing the friction force is substantially the same as the related art, detailed description thereof will be omitted.
The slide guide 13 of the elastic unit 7 includes a guide body 19 that elongates on the arc-type trajectory of the damping space 1 to support an outer surface of the coil spring 9 and the pressing unit 11 that projects toward a rotation center shaft of the primary wheel 3 from the guide body 19 to press the end of the coil spring 9.
Herein, the external surface of the coil spring 9, which is supported by the slide guide 13 is a part where the coil spring 9 is in contact with an inner surface that forms the damping space 1 of the primary wheel 3 by receiving a centrifugal force by the rotation of the primary wheel 3 if the slide guide 13 is not provided.
The guide body 19 of the slide guide 13 has any one of a projection type that is provided with a projection portion 21 which projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of another adjacent slide guide 13; a groove type that is provided with a groove portion 23 which is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted; and a mixed type that is provided with the projection portion 21 or the groove portion 23 at both sides thereof, respectively, or the projection portion 21 and the groove portion 23 together at both sides thereof.
For example, the slide guide 13 having the groove-type guide body is shown in FIG. 4, the slide guide 13 having the mixed-type guide body is shown in FIGS. 5 and 6, and the slide guide 13 having the projection-type guide body is shown at the right side of FIG. 8.
Herein, various embodiments of the slide guide 13 will firstly be described with reference to FIGS. 8 to 10. For reference, the slide guide 13 generally represents all slide guides having the projection-type, groove-type, and mixed-type guide bodies 19 as classification depending on the shape thereof as described above. As described below, the slide guide 13 generally represents end guides 25 that are installed at both ends of the elastic unit 7 and all mid-guides 27 that are positioned between the end guides 25 as classification depending on the installation position thereof.
Referring to FIG. 8, the slide guide 13 of the elastic unit 7 is constituted by the end guides 25 that are installed at both ends of the elastic unit 7 and respectively positioned at both ends of the arc-type trajectory of the damping space 1.
The projection portion 21 that projects on the arc-type trajectory of the damping space 1 is provided in any one guide body 19 of the two end guides 25 to be inter-guided and inserted and the groove portion 23 that is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted, is provided in the guide body 19 of the other end guide 25.
That is, only the end guides 25 which are only two slide guides 13 are provided in the elastic unit 7 and one coil spring 9 is disposed between the pressing units 11 of the two end guides 25.
Referring to FIGS. 9 and 10, the slide guide 13 of the elastic unit 7 includes the end guides 25 that are installed at both ends of the elastic unit 7 and respectively positioned at both ends of the arc-type trajectory of the damping space 1 and one or more mid-guides 27 that are disposed between the two end guides 25, wherein the coil springs 9 of a number less than a total number of the end guides 25 and the mid-guides 27 by one are disposed in series.
The guide body 19 of the end guide 25 includes any one of the projection portion 21 that projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of the adjacent mid-guide 27 and the groove portion 23 that is recessed on the arc-type trajectory of the damping space 1, into which the projection portion 21 is inserted.
The guide body 19 of the mid-guide 27 has any one type of a first mixed type that is provided with the projection portion 21 which projects on the arc-type trajectory of the damping space 1 to be inserted or drawn while being inter-guided with the guide body 19 of another adjacent slide guide 13 and the groove portion 23 which is recessed on the arc-type trajectory of the damping space 1 at both sides thereof, into which the projection portion 21 is inserted; a second mixed type that is provided with the projection portions 21 at both sides thereof; and a third mixed type that is provided with the groove portions 23 at both sides thereof.
In FIG. 9, the end guides 25 are provided at both ends of the elastic unit 7 and the mixed-type mid-guides 27 are disposed between the two end guides 25 one by one.
As shown in the figure, the end guides 25 may be formed of the groove type or the projection type and the mid-guides 27 is only the mixed type, but the types of the mid-guides 27 may be any one selected from the three types of the first mixed type, the second mixed type, and the third mixed type as shown in the figure.
However, the shape of the end guides 25 and the mid-guides 27 has a structure similar to one chain in which one end guide 25 to the other end guide 25 through the mid-guide 27 are connected to slide and guide to each other on a circumferential trajectory of the damping space 1.
In FIG. 10, the slide guide 13 is provided with two mid-guides 27. In FIG. 10A, the slide guide 13 includes one end guide 25 that is provided with the groove portion 23 from a left side thereof, a first mixed-type mid guide 27 that is disposed adjacent to the end guide 25, a second mixed-type mid guide 27 that is disposed adjacent to the first mixed-type mid-guide 27, and the other end guide 25 provided with the groove portion 23, which is disposed adjacent to the second mixed-type mid-guide 27. Therefore, this structure is adopted in FIGS. 1 to 7.
In FIG. 10B, the slide guide 13 includes one end guide 25 that is provided with the projection portion 21 from the left side thereof, a third mixed-type mid-guide 27 that is disposed adjacent to the end guide 25, a first mixed-type mid-guide 27 that is disposed adjacent to the third mixed-type mid-guide 27, and the other end guide 25 provided with the projection portion 21, which is disposed adjacent to the first mixed-type mid-guide 27.
In FIG. 10C, the slide guide 13 includes one end guide 25 that is provided with the projection portion 21 from the left side thereof, a third mixed-type mid-guide 27 that is disposed adjacent to the end guide 25, a second mixed-type mid-guide 27 that is disposed adjacent to the third mixed-type mid-guide 27, and the other end guide 25 provided with the groove portion 23, which is disposed adjacent to the second mixed-type mid-guide 27.
Of course, in addition, more numbers of mid guides 27 may be inserted as necessary with a condition to have a shape joinable with an adjacent slide guide 13. Therefore, the number of coil springs 9 to be mounted also increases.
Meanwhile, a maximum depth of the projection portion 21 constituting the guide body 19, which is inserted and guided into the groove portion 23 of another adjacent guide body 19 is set to a length within an elastic deformation range of the coil spring 9 that is disposed between the pressing units 11 of the two guide bodies 19.
That is, a length indicated as 'a' in FIG. 3 means a maximum stroke of the projection portion 21 of the first mixed-type mid-guide 27 which can be inserted into the groove portion 23 of the groove-type end guide 25. A shrinkage state of the coil spring 9 that is installed between the first mixed-type mid-guide 27 and the groove-type end guide 25 does not exceed an elastic deformation limit even in the insertion state at the maximum stroke, such that the coil spring 9 is not plastically deformed. Therefore, 'a' is configured to secure the durability of the coil spring 9.
Similarly, 'b' and 'c' of FIG. 3 are configured to improve the durability of the coil spring 9 by preventing the coil springs 9 installed in the corresponding portions from being plastically deformed.
The projection portion 21 of another adjacent guide body 19 is inserted into the groove portion 23 of the guide body 19 by two or more fork units 29 that are disposed in line in the direction of a rotational axis of the primary wheel 3.
Therefore, only a part of the outer surface of the coil spring 9 is surrounded and supported at both sides by the fork units 29. This contributes to improve the durability of the coil spring 9 and facilitate the extension of the coil spring 9 by maximally suppressing contact and interference between the guide body 19 and the coil spring 9 while the coil spring 9 extends.
Meanwhile, since the projection portion 21 of the guide body 19 also moves together with the coil spring 9 while supporting the coil spring 9 by only a width of the projection portion 21 which is inserted into the groove portion 23, the projection portion 21 of the guide body 19 also contributes to minimize the contact and interference between the guide body 19 and the coil spring 9 while the coil spring 9 extends.
In the case when two or more coil springs 9 are provided in the elastic unit 7, the plurality of coil springs 9 preferably have different elastic coefficients.
When the coil springs 9 having different elastic coefficients are arranged in series, the damping characteristic exhibited while the elastic unit 7 extends is formed with multi-stages by the elastic coefficient of each coil spring 9, such that the damping characteristic exhibits smooth and wide damping effects in respect to a comparatively smaller shock to a larger shock.
Further, since it is possible to easily establish the damping characteristic of the damper flywheel by appropriately changing the elastic coefficients of the coil springs 9, the damper flywheel can be easily optimized to an environment where the damper flywheel will be mounted.
Further, the coil spring 9 that is provided in the elastic unit 7 is preferably constituted by an arc-type coil spring 9 that elongates on the arc-type trajectory of the damping space 1. Of course, although a linear coil spring 9 may be used, the arc-type coil spring 9 tracing the arc-type trajectory of the damping space 1 constantly extends on the arc-type trajectory even when an external force is not applied. As a result, since the coil spring is in contact with the pressing unit 11 under a uniform pressure being not eccentric to one side from an end of the coil spring 9 while the coil spring 9 extends, a partial load concentration of the coil spring 9 is prevented, noise, vibration, and friction are suppressed and a stable elastic characteristic is secured in an entire range where the extension is made, thereby ultimately contributing to a stable damping operation of the damping flywheel.
One or more lubrication grooves 31 may be provided at a portion of the slide guide 13 that is in contact with the primary wheel 3 that constitutes the damping space 1 13 to contain oil by being recessed on the surface of the slide guide 13. Therefore, friction and abrasion between the slide guide 13 and the primary wheel 3 can be reduced by the lubrication grooves 31.
Meanwhile, the slide guide 13 may include a plurality of extension grooves 33 that are formed on an outer radial direction of the guide body 19 and are extensively deformable in a circumferential direction of the guide body 19 as shown in FIGS. 11 and 12.
Herein, the extension grooves 33 that are formed in the guide body 19 are formed in a slit type in which both surfaces of the guide body 19 are penetrated and connected to each other
That is, the guide body 19 can damp a load applied to the guide body 19 of the slide guide 13 in the circumferential direction while extending by the extension grooves 33.
A pivot portion which is an internal end of the guide body 19 of the extension groove 33 is preferably formed of a constant circular cross section in a rotational axis direction of the primary wheel 3 so as to minimize local stress concentration and maintain elasticity.
In the embodiment shown in FIG. 11, the extension groove 33 is generally formed at only a portion corresponding to the projection portions 21 of the guide body 19 and the extension groove 33 is not formed at a portion corresponding to the groove portion 23 due to rigidity, but the extension groove 33 may be provided in the groove portion 23.
As described above, in the case of the damper flywheel with the slide guide 13 where the extension grooves 33 are formed, the slide guide 13 itself can provide the elastic force while extending to increase a stopper torque, thereby securing a more smooth damping performance in the damping operation of the damper flywheel.
Herein, the stopper torque is a maximum torque which can be applied between the primary wheel 3 and the secondary wheel 5. The slide guide 13 serves to set a maximum angle to allow the primary wheel 3 and the secondary wheel 5 to inter-rotate to limit an extension range of the coil spring 9 to a predetermined level, such that the slide guide 13 must cope with the stopper torque which is the maximum torque applied between the primary wheel 3 and the secondary wheel 5. The extension groove 33 grants the elastic force to the slide guide 13 itself to increase an upper limit of the stopper torque which the slide guide 13 can support.
Further, on the contrary, since the load acting on the coil spring 9 that guides to the slide guide 13 can be reduced, a cost required to configure the coil spring 9 can be reduced and the more smooth damping operation can be performed. In addition, since the guide body 19 itself of the slide guide 13 absorbs the shock while being elastically deformed, the slide guide 13 with the guide body 19 can have improved durability in comparison with a slide guide with a simple guide body without the extension groove 33.
Further, since the extension groove 33 is always filled with grease, lubricity of the slide guide 13 is enhanced, such that the abrasion is remarkably reduced, the noise is reduced, and the durability is improved.

Claims (17)

  1. A damper flywheel, comprising:
    a primary wheel that is connected to receive a rotational force from a power supplier and is provided with an arc-type damping space which forms a concentric shaft with a rotary shaft of the rotational force therein;
    a secondary wheel that is joined to be comparatively rotatable by forming the concentric shaft with the primary wheel and is connected to draw power to a rotational load; and
    an elastic unit that is disposed in the damping space to supply an elastic force in response to the comparative rotation of the primary wheel and the secondary wheel,
    wherein the elastic unit includes one or more coil springs and two or more slide guides that are provided with a pressing unit that supports an end of the coil spring, are installed to be slidable on an arc-type trajectory of the damping space, and are inserted or drawn while being inter-guided on the arc-type trajectory.
  2. The damper flywheel of claim 1, wherein the slide guide of the elastic unit includes:
    a guide body that elongates on the arc-type trajectory of the damping space and supports an outer surface of the coil spring; and
    the pressing unit that projects toward a rotation center shaft of the primary wheel from the guide body to press the end of the coil spring.
  3. The damper flywheel of claim 2, wherein the guide body of the slide guide includes any one of a projection type that is provided with a projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide; a groove type that is provided with a groove portion which is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted; and a mixed type that is provided with the projection portion or the groove portion at both sides thereof, respectively, or the projection portion and the groove portion together at both sides thereof.
  4. The damper flywheel of claim 2, wherein the slide guide of the elastic unit is constituted by the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space.
  5. The damper flywheel of claim 4, wherein the projection portion that projects on the arc-type trajectory of the damping space is provided in any one guide body of the two end guides to be inter-guided with each other and inserted and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, is provided in the guide body of the other end guide.
  6. The damper flywheel of claim 2, wherein the slide guide of the elastic unit includes:
    the end guides that are installed at both ends of the elastic unit and respectively positioned at both ends of the arc-type trajectory of the damping space; and
    one or more mid-guides that are disposed between the two end guides,
    wherein the coil springs of a number less than a total number of the end guides and the mid-guides by one are disposed in series.
  7. The damper flywheel of claim 6, wherein the guide body of the end guide includes any one of the projection portion that projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of the adjacent mid-guide and the groove portion that is recessed on the arc-type trajectory of the damping space, into which the projection portion is inserted, and
    wherein the guide body of the mid-guide has any one type of a first mixed type that is provided with the projection portion which projects on the arc-type trajectory of the damping space to be inserted or drawn while being inter-guided with the guide body of another adjacent slide guide and the groove portion which is recessed on the arc-type trajectory of the damping space at both sides thereof, into which the projection portion is inserted; a second mixed type that is provided with the projection portions at both sides thereof; and a third mixed type that is provided with the groove portions at both sides thereof.
  8. The damper flywheel of claim 7, wherein the slide guide includes:
    one end guide that is provided with the groove portion;
    a first mixed-type mid guide that is disposed adjacent to the end guide;
    a second mixed-type mid guide that is disposed adjacent to the first mixed-type mid-guide; and
    the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
  9. The damper flywheel of claim 7, wherein the slide guide includes:
    one end guide that is provided with the projection portion;
    a third mixed-type mid-guide that is disposed adjacent to the end guide;
    a first mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and
    the other end guide that provided with the projection portion, which is disposed adjacent to the first mixed-type mid-guide.
  10. The damper flywheel of claim 7, wherein the slide guide includes:
    one end guide that is provided with the projection portion;
    a third mixed-type mid-guide that is disposed adjacent to the end guide;
    a second mixed-type mid-guide that is disposed adjacent to the third mixed-type mid-guide; and
    the other end guide that is provided with the groove portion, which is disposed adjacent to the second mixed-type mid-guide.
  11. The damper flywheel of any one of claims 3, 5, and 7 to 10, wherein a maximum depth of the projection portion constituting the guide body, which is inserted and guided into the groove portion of another adjacent guide body is set to a length within an elastic deformation range of the coil spring that is disposed between the pressing units of the two guide bodies.
  12. The damper flywheel of claim 11, wherein the projection portion of another adjacent guide body is inserted into the groove portion of the guide body by two or more fork units that are disposed in line in the direction of a rotational axis of the primary wheel.
  13. The damper flywheel of any one of claims 1 to 10, wherein a plurality of coil springs that are provided in the elastic unit have different elastic coefficients.
  14. The damper flywheel of any one of claims 1 to 10, wherein the coil spring that is provided in the elastic unit is constituted by an arc-type coil spring that elongates on the arc-type trajectory of the damping space.
  15. The damper flywheel of any one of claims 1 to 10, wherein one or more lubrication grooves are provided at a portion where the slide guide is in contact with the primary wheel that constitutes the damping space in the slide guide to contain oil by being recessed on the surface of the slide guide.
  16. The damper flywheel of claim 2, wherein the guide body includes a plurality of extension grooves that are formed on an outer radial direction of the guide body and are extensively deformable in a circumferential direction of the guide body.
  17. The damper flywheel of claim 16, wherein the extension grooves that are formed in the guide body are formed in a slit type in which both surfaces of the guide body are penetrated and connected to each other, and
    wherein a pivot portion which is an internal end of the guide body of the extension groove is preferably formed of a constantly circular cross section in a rotational axis direction of the primary wheel so as to minimize local stress concentration and maintain elasticity.
PCT/KR2009/002818 2008-09-19 2009-05-27 Damper flywheel WO2010032915A1 (en)

Applications Claiming Priority (4)

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KR1020080092269A KR101011111B1 (en) 2008-09-19 2008-09-19 Damper Flywheel
KR10-2008-0092269 2008-09-19
KR10-2009-0001109 2009-01-07
KR1020090001109A KR101027893B1 (en) 2009-01-07 2009-01-07 Slide Guide for Damper Flywheel

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DE102011075114A1 (en) 2011-05-03 2012-11-08 Zf Friedrichshafen Ag torsional vibration damper
ITTO20120567A1 (en) * 2012-06-26 2013-12-27 Dayco Europe Srl PICKER PULLEY
WO2014135144A1 (en) * 2013-03-05 2014-09-12 Ulrich Rohs Torsional vibration damper having at least a primary side and a secondary side
FR3057322A1 (en) * 2016-10-06 2018-04-13 Peugeot Citroen Automobiles Sa DOUBLE ENGINE FLYWHEEL COMPRISING HYDRAULIC SHOCKS
EP3321538A1 (en) * 2016-11-14 2018-05-16 ZF Friedrichshafen AG Torsional vibration damper
CN112682473A (en) * 2019-10-17 2021-04-20 舍弗勒技术股份两合公司 Primary part with flexible plate pressed into primary flywheel mass in one piece

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EP1626198A2 (en) * 2004-08-11 2006-02-15 Hyundai Motor Company Torsional vibration damper
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DE19730000A1 (en) * 1997-07-12 1999-01-14 Mannesmann Sachs Ag Torsion oscillation dampener for vehicles
US20020128074A1 (en) * 2001-03-08 2002-09-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Torsional vibration damper
EP1686285A1 (en) * 2003-03-20 2006-08-02 Hyundai Motor Company A torsional vibration damper
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EP1626198A2 (en) * 2004-08-11 2006-02-15 Hyundai Motor Company Torsional vibration damper

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075114A1 (en) 2011-05-03 2012-11-08 Zf Friedrichshafen Ag torsional vibration damper
WO2012150093A1 (en) 2011-05-03 2012-11-08 Zf Friedrichshafen Ag Torsional vibration damper
CN103502684A (en) * 2011-05-03 2014-01-08 Zf腓特烈斯哈芬股份公司 Torsional vibration damper
US9133904B2 (en) 2011-05-03 2015-09-15 Zf Friedrichshafen Ag Torsional vibration damper
ITTO20120567A1 (en) * 2012-06-26 2013-12-27 Dayco Europe Srl PICKER PULLEY
WO2014135144A1 (en) * 2013-03-05 2014-09-12 Ulrich Rohs Torsional vibration damper having at least a primary side and a secondary side
FR3057322A1 (en) * 2016-10-06 2018-04-13 Peugeot Citroen Automobiles Sa DOUBLE ENGINE FLYWHEEL COMPRISING HYDRAULIC SHOCKS
EP3321538A1 (en) * 2016-11-14 2018-05-16 ZF Friedrichshafen AG Torsional vibration damper
CN108071745A (en) * 2016-11-14 2018-05-25 Zf腓特烈斯哈芬股份公司 Torsional vibration damper
CN108071745B (en) * 2016-11-14 2021-11-16 Zf腓特烈斯哈芬股份公司 Torsional vibration damper
CN112682473A (en) * 2019-10-17 2021-04-20 舍弗勒技术股份两合公司 Primary part with flexible plate pressed into primary flywheel mass in one piece

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