EP3645909A1 - A torque limiter with friction lining sealing - Google Patents
A torque limiter with friction lining sealingInfo
- Publication number
- EP3645909A1 EP3645909A1 EP18742947.7A EP18742947A EP3645909A1 EP 3645909 A1 EP3645909 A1 EP 3645909A1 EP 18742947 A EP18742947 A EP 18742947A EP 3645909 A1 EP3645909 A1 EP 3645909A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- limiter
- torque limiter
- plate
- torque
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 48
- 239000000314 lubricant Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16F15/129—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 characterised by friction-damping means
- F16F15/1297—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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
- F16D7/024—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces
- F16D7/025—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with axially applied torque limiting friction surfaces with flat clutching surfaces, e.g. discs
-
- 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
- F16F2230/00—Purpose; Design features
- F16F2230/30—Sealing arrangements
Definitions
- the present invention relates to torque limiters positioned between the engine and the transmission units in vehicles having internal combustion engine.
- Torque limiters are positioned between the engine and transmission units in internal combustion vehicles. Torque limiters prevent the excessive torque from being transmitted to the transmission units when the torque, obtained in the engine, is greater than a specific value.
- a torsional vibration damper has primary and secondary masses rotatable with and relative to each other about a common axis, and a torsionally elastic damper which opposes rotation of the masses relative to each other and operates in series with a torque limiting device.
- the torque limiting device comprises a pair of ring-shaped lateral members flanking a ring-shaped intermediate member which can stress the energy storing elements of the torsionally elastic damper.
- One of the lateral members is a pre-stressed diaphragm spring which is riveted to the other lateral member.
- the maximum torque which can be transmitted by the torque limiting device is greater than the maximum torque which can be transmitted by a friction clutch between the secondary mass and the transmission of a motor vehicle.
- the primary mass can receive torque from the engine of the vehicle.
- a torsion damper for a hybrid vehicle comprises a inertial plate, a cover plate, a first damper plate, a second damper plate, plurality of compression coil spring, a driven plate, a connecting plate, a torque limiter, and a spline hub.
- the inertial plate is coupled with the output shaft of an engine.
- the cover plate forms an oil storage space through being coupled with the inertial plate.
- the first damper plate and the second damper plate are coupled via the inertial plate to one body.
- the plurality of compression coil spring absorbs the vibration and impact of rotation direction.
- the driven plate is installed between the first damper plate and the second damper plate.
- the driven plate receives reaction force through being supported by the plurality of compression coil spring.
- the connecting plate connects the plurality of compression coil spring in a row and is installed in the outer circumference of the driven plate.
- the torque limiter is connected to the driven plate.
- the spline hub is connected to the torque limiter for transferring the driving force from the torque limiter to a transmission.
- Torque limiter is placed at a region existing in the inner section of these springs. Mixing of lubricant in this torque limiter affects the delimited torque value.
- the present invention relates to a torque limiter, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.
- An object of the present invention is to provide a torque limiter where friction linings are protected from external factors.
- a secondary side having a drive plate and a spring connected to the drive plate from one side and which functions inside a lubricant, the other side of the spring arranged to be linked to the engine,
- the subject matter torque limiter (10) comprises at least one sealing ring (41 ) extending from at least one of the limiter upper cover and the pressure plate towards the drive plate for providing sealing between the lubricant and the friction lining .
- the terms “outer” and “inner,” as well as the “axial” and “radial” orientations, will be used to designate elements of the torque limiter in accordance with the definitions given in the description.
- the "radial” orientation is directed orthogonally to a rotation axis X of the torque limiter which determines the “axial” orientation; and, moving away from said axis from inside to outside, the “circumferential” orientation is directed orthogonally to the axis of the torque limiter and orthogonally to the radial direction.
- the terms “outer” and “inner” are used to define the relative position of one element with respect to another with reference to the rotation axis X of the torque limiter; an element close to the axis is thus
- a torque limiter of this kind can have one or several of the following characteristics :
- the sealing ring comprises at least one lip.
- the torque limiter comprises a limiter lower cover for pressing the pressure plate to the drive plate.
- An axial spring such as diaphragm, is arranged between the limiter lower cover and the pressure plate.
- the sealing ring is provided in the vicinity of the outer wall of at least one of the limiter upper cover and the pressure plate.
- the sealing ring is provided in the vicinity of the outer wall of at least one of the limiter upper cover and a limiter lower cover for pressing the pressure plate to the drive plate.
- Two sealing rings are provided on the limiter upper cover and on the outer wall of the pressure plate.
- the torque limiter further comprises at least one elastic sealing element which is rested onto the sealing ring provided on the limiter upper cover from one end and which is rested onto a primary cover of the secondary side from the other end.
- - Spring is a curved spring
- the secondary side has an input element and an output element, the spring being arranged between the input element and the output element to transmit a torque and the output element being formed by the drive plate.
- the torque limiter has an axis of rotation X.
- Each sealing ring has a mounting portion having an annular cavity engaged with the periphery of the limiter upper cover or pressure plate
- the mounting portion In a plane comprising the axis of rotation of the torque limiter and crossing the sealing ring, the mounting portion has a U shape, the periphery of the limiter upper cover or pressure plate being arranged inside the U shape.
- the lip covers a friction lining in a radially upper region of the friction lining.
- the lip extends from the mounting portion towards the drive plate.
- the input element of the secondary side has two covers arranged axially in both sides of the springs. Thus, the springs are guided axially by these two covers.
- the drive plate, the limiter upper cover (30), the pressure plate (33) and the limiter lower cover are arranged axially between the two covers of the input element.
- One of the two covers is a primary cover, the limiter upper cover being arranged axially between the primary cover and the drive plate.
- One of the two covers is a secondary cover, the limiter lower cover being arranged axially between the secondary cover and the drive plate.
- At least one sealing element is provided between the limiter lower cover and a secondary cover of the secondary side.
- At least one flexible washer is provided connected to the intermediate plate from one side and which pushes a plastic gasket towards the secondary cover from the other side for sealing means.
- An other object of the invention is a torque transmission device comprising :
- a torsional vibration damper with a axis of rotation X having a primary element, a drive plate, and springs interposed circumferentially between primary element and the drive plate, the springs functioning in a chamber of the primary element containing lubricant,
- the torque limiter comprising a driven plate secured in rotation with a first cover and a pressure plate, the torque limiter comprising friction linings arranged axially between the pressure plate and the drive plate and between the first cover and the drive plate, wherein the torque limiter comprises at least one sealing ring extending from at least one of the first cover and the pressure plate towards the drive plate.
- the driven plate is also called intermediate plate in the description.
- the first cover is also called limiter upper cover in the description.
- the primary element is also called primary cover
- a torque transmission device of this kind can have one or several of the following characteristics :
- the torque transmission device comprises also a hub driven by the driven plate.
- the torque limiter comprises a second cover, an axial spring being axially interposed between the second cover and the pressure plate to press the pressure plate towards the drive pate.
- the second cover is also called limiter lower cover in the description.
- the sealing ring comprises at least one lip, the lip covering radially one of the friction linings in a radially upper region of this friction lining.
- the primary element comprises a stell sheet flywheel.
- the primary element is formed by a primary cover and a secondary cover arranged axially at both sides of the springs.
- the torque transmission device can also include anyone of the additional features mentioned previously for the torque limiter.
- Figure 1 is the representative isometric view of the subject matter torque limiter.
- Figure 2 is the representative isometric view of the inner section of the subject matter torq limiter.
- Figure 3 is the representative cross sectional view of the subject matter torque limiter.
- Figure 4 is the representative detailed view of the cross section of the subject matter torque limiter.
- Figure 5 is the representative view of the curved spring, drive plate and intermediate plate of the subject matter torque limiter.
- FIG. 6 is a detail of figure 4
- Figure 7 is a perspective view of a sealing ring
- the subject matter torque limiter (10) essentially has a primary side (20) connected to the gear box and a secondary side (50) connected to the engine.
- the primary side (20) has a hub (21 ) connected to the gear box and an intermediate plate (22) connected to said hub (21 ).
- the intermediate plate (22) is essentially provided in a circular form.
- the limiter upper cover (30) and the limiter lower cover (31 ) are provided at the two sides of the intermediate plate (22) and there is a predetermined distance in between.
- the secondary side (50) comprises a primary cover (51 ) and a secondary cover (52) provided such that there is a predetermined distance in between.
- the primary cover (51 ) and the secondary cover (52) are essentially provided in a circular form.
- the secondary cover (52) is flywheel.
- the primary cover (51 ) and the secondary cover (52) are bent towards each other from the vicinity of the outer walls thereof and they form a hollow circular chamber-like form. In other words, an inner gap (501 ) is obtained inside the secondary side (50).
- the primary side (20) of the torque limiter (10) at least partially enters into the inner gap (501 ) defined between the primary cover (51 ) and the secondary cover (52).
- the input element of the secondary side has two covers arranged axially in both sides of the springs.
- the springs are guided axially by these two covers.
- the curved spring (55) is provided in a manner drawing an approximately semi-circular form.
- two curved springs (55) are provided.
- the curved spring (55) is essentially provided in a manner as far as possible from the hub (21 ) between the primary cover (51 ) and the secondary cover (52).
- the curved spring (55) can be provided in a manner as long as possible.
- the formed section (53) is provided on at least one of the primary cover (51 ) and the secondary cover (52).
- the formed section (53) is provided in a manner forming a step from one of the primary cover (51 ) and/or the secondary cover (52) towards the other one of the primary cover (51 ) and/or the secondary cover (52).
- the curved spring (55) is rested to the formed section (53) from one end thereof.
- the curved spring (55) is rested onto at least one of the primary cover (51 ) and the secondary cover (52).
- the curved spring (55) is connected to a drive plate (35).
- the curved spring (55) is rested onto the drive plate (35) from one side thereof.
- the drive plate (35) is essentially provided in a circular form.
- the intermediate plate (22) can enter into the middle of the drive plate (35).
- the curved spring (55) is placed into said spring housing (353).
- at least one end of the curved spring (55) is rested to one end of the spring housing (353), in other words, the curved spring (55) is connected to the drive plate (35).
- each friction linings (32) provided at the two sides of the drive plate (35).
- the friction linings (32) are compressed between the limiter upper cover (30) and the pressure plate (33).
- the rotational movements coming to the drive plate (35) can be transmitted to the intermediate plate (22).
- the rotational movement, coming to the secondary side (50) connected to the engine, is primarily transferred from the primary cover (51 ) and from the secondary cover (52) to the curved spring (54).
- the curved spring (55) dampens the vibrations coming from the engine and transfers said vibrations to the drive plate (35).
- the rotation in the drive plate (35) is transferred to the intermediate plate (22) and to the hub (21 ) by means of friction linings (32).
- rotation is transferred to the gear box connected to the hub (21 ).
- the dampening performance is increased.
- the curved spring (55) is positioned in a close manner to the outer wall of the torque limiter (10), the curved spring (55) can be provided at a length which is as long as possible. Thanks to the long structure of the curved spring (55), the force exerted by the curved spring (55) is lower than the force exerted by the straight helical springs for unit elastic deformation. Thanks to this, the vibrations in different frequencies can be isolated. Thanks to this, by usage of the curved spring (55), the vibration dampening performance of the torque limiter (10) is increased.
- a lubricant (56) is provided at the section where the curved spring (55) exists.
- grease oil is used as lubricant (56).
- the curved spring (55) is provided in a partially embedded manner inside the lubricant (56). Thus, operation of the curved spring (55) inside the lubricant (56) is provided. By means of this, the frictions between the curved spring (55) and the other components are reduced and abrasion, heating problems are prevented.
- the spring guide (54) is provided between the primary cover (51 ) and the secondary cover (52) along the longitudinal side of the curved spring (55).
- the spring guide (54) is provided in a form compliant to the form of the curved spring (55).
- the spring guide (54) is provided in a semi-circular form.
- the spring guide (54) has a semi-circular cross section.
- the intermediate plate (22) Since the intermediate plate (22) is positioned in an opening (351 ) provided in the middle of the drive plate (35), the movements of the drive plate (35) except rotational movement are limited. In other words, in case misalignments occurs in the friction linings (32) due to high level of torque, the drive plate (35) may slide and the center thereof may displace. Meanwhile, the outer wall (221 ) of the intermediate plate (22) is rested onto an inner wall (352) of the opening (351 ) at the drive plate (35) and further displacement of the drive plate (35) is prevented. In a possible embodiment of the present invention, there is at least one protrusion (222) on the outer wall (221 ) of the intermediate plate (22).
- protrusions (222) are provided, such that there is a predetermined distance in between, along the outer wall (221 ).
- the inner wall (352) of the drive plate (35) contacts the protrusions (222).
- the contact area between the drive plate (35) and the intermediate plate (22) decreases.
- the protrusions (222) can also be provided on the inner wall (352) of the drive plate (35).
- At least one sealing ring (41 ) is provided on the outer wall of the pressure plate (33) and on at least one of the limiter upper cover (30) and the limiter lower cover (31 ).
- the sealing ring (41 ) is provided in C-like form and it is fixed in a manner engaging to the wall.
- the sealing ring (41 ) comprises at least one lip (41 1 ) extending towards the drive plate (35).
- the elastic sealing element (40) is preferably rested to the sealing ring (41 ) from one end thereof. Thanks to the elastic sealing element (40), dust entry towards the section, where the curved spring (55) exists, is prevented. At the same time, the elastic sealing element (40) pushes the limiter upper cover (30) towards the secondary cover (52). There is at least one sealing element (42) provided between the limiter lower cover (31 ) and the secondary cover (52).
- the elastic sealing element (40) pushes the limiter upper cover (30), the limiter lower cover (31 ), connected to the limiter upper cover (30) in a rigid manner, is also pushed and the sealing element (42) is compressed between the limiter lower cover (31 ) and the secondary cover (52). Thanks to the sealing element (42), dust entry to the side, where the curved spring (55) exists, through between the limiter lower cover (31 ) and the secondary cover (52) is prevented.
- at least one flexible washer (43) is provided between the section, where the pressure plate (33) is connected to the limiter lower cover (31 ), and the hub (21 ) side.
- each sealing ring 41 has a mounting portion having an annular cavity engaged with the periphery of the limiter upper cover 30 or pressure plate 33.
- the mounting portion In a plane comprising the axis of rotation of the torque limiter and crossing the sealing ring 41 , the mounting portion has a U shape, the periphery of the limiter upper cover 30 or pressure plate 33 being arranged inside the U shape.
- the lip 41 1 of the sealing ring 41 covers a friction lining in a radially upper region of the friction lining.
- the lip 41 1 extends from the mounting portion towards the drive plate 35.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Transmission Devices (AREA)
- Springs (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR2017/09657A TR201709657A1 (en) | 2017-06-30 | 2017-06-30 | A TORK LIMITOR WITH PAD PROTECTION |
PCT/EP2018/067849 WO2019002630A1 (en) | 2017-06-30 | 2018-07-02 | A torque limiter with friction lining sealing |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3645909A1 true EP3645909A1 (en) | 2020-05-06 |
Family
ID=62976018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18742947.7A Withdrawn EP3645909A1 (en) | 2017-06-30 | 2018-07-02 | A torque limiter with friction lining sealing |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3645909A1 (en) |
JP (1) | JP2020525742A (en) |
CN (1) | CN110998135B (en) |
TR (1) | TR201709657A1 (en) |
WO (1) | WO2019002630A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3721711C2 (en) * | 1986-07-05 | 1997-09-04 | Luk Lamellen & Kupplungsbau | Device for damping vibrations |
DE3841639A1 (en) * | 1988-06-13 | 1989-12-14 | Luk Lamellen & Kupplungsbau | Device for damping vibrations |
FR2698940B1 (en) * | 1992-12-08 | 1995-01-20 | Valeo | Torsional damper, especially for a motor vehicle. |
FR2714434B1 (en) * | 1993-12-23 | 1996-02-09 | Valeo | Damping device intended to be integrated into a motor vehicle powertrain. |
US6119839A (en) * | 1996-07-05 | 2000-09-19 | Luk Lamellen Und Kupplungsbau Gmbh | Torsional vibration damper |
KR101251506B1 (en) | 2010-12-08 | 2013-04-05 | 현대자동차주식회사 | Torsion damper for hybrid vehicle |
JP6149415B2 (en) * | 2013-02-06 | 2017-06-21 | アイシン精機株式会社 | Power transmission device |
CN206159364U (en) * | 2016-10-25 | 2017-05-10 | 珠海华粤传动科技有限公司 | Sealed dual mass flywheel |
-
2017
- 2017-06-30 TR TR2017/09657A patent/TR201709657A1/en unknown
-
2018
- 2018-07-02 EP EP18742947.7A patent/EP3645909A1/en not_active Withdrawn
- 2018-07-02 WO PCT/EP2018/067849 patent/WO2019002630A1/en active Application Filing
- 2018-07-02 CN CN201880043996.0A patent/CN110998135B/en active Active
- 2018-07-02 JP JP2020522410A patent/JP2020525742A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JP2020525742A (en) | 2020-08-27 |
TR201709657A1 (en) | 2019-01-21 |
CN110998135A (en) | 2020-04-10 |
WO2019002630A1 (en) | 2019-01-03 |
CN110998135B (en) | 2022-05-17 |
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