WO2017155486A1 - Wear-compensating clutch - Google Patents

Wear-compensating clutch Download PDF

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Publication number
WO2017155486A1
WO2017155486A1 PCT/TR2016/050357 TR2016050357W WO2017155486A1 WO 2017155486 A1 WO2017155486 A1 WO 2017155486A1 TR 2016050357 W TR2016050357 W TR 2016050357W WO 2017155486 A1 WO2017155486 A1 WO 2017155486A1
Authority
WO
WIPO (PCT)
Prior art keywords
wear
plate
wear sensor
clutch cover
pressure plate
Prior art date
Application number
PCT/TR2016/050357
Other languages
French (fr)
Inventor
Alisan YÜCESAN
Original Assignee
Ma-Pa Makina Parçalari Endustrisi A. S.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ma-Pa Makina Parçalari Endustrisi A. S. filed Critical Ma-Pa Makina Parçalari Endustrisi A. S.
Publication of WO2017155486A1 publication Critical patent/WO2017155486A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/75—Features relating to adjustment, e.g. slack adjusters
    • F16D13/757—Features relating to adjustment, e.g. slack adjusters the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate

Definitions

  • the invention is related to a wear compensation mechanism in the clutch cover assembly which is primarily aiming to keep clutch pedal load, clutch clamp load and clutch setup height at a constant value or in a defined range.
  • Clutch pedal load, clutch clamp load and clutch setup height varies in case wearing occurs in the clutch disc facings if clutch cover assembly does not possess a compensation mechanism to keep diaphragm spring (8) working position same as its initial position before the wearing occurred.
  • Clutch pedal load gradually increases as long as diaphragm spring (8) working position changes due to wearing of clutch disc facings and it can reach a load level troubling driver comfort while the decline of clutch clamp load causes to loss in torque transfer capacity of clutch kit.
  • Clutch cover assembly has to be replaced when its clamp load drops below minimum clamp load level needed for engaging.
  • Clutch disc facings are worn mainly owing to engaging process and consequently their thicknesses decrease.
  • Pressure plate (2) moves with the same amount of total decrement in facings' thickness towards to clutch disc and this movement alters the working position of diaphragm spring (8) which leads to change clutch clamp load, clutch pedal load and clutch setup height.
  • wear compensation plate (4) By the movement of wear compensation plate (4), the invented mechanism compensates the total amount of facings' wear to keep the diaphragm spring (8) to maintain its initial working position even if wearing occurs.
  • Clutch clamp load and clutch setup height remains stable, additionally, driver comfort is ensured by the invention as the clutch pedal load remains constant even if facings continue to wear.
  • the mechanism compensates facings' wear thus clutch cover assembly also has a longer service life with the same technical characteristics as its initial situation.
  • the wear sensor (5) or sensors are directly or indirectly mounted on the pressure plate (2) and initially, it touches or will touch to clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly and it touches or will touch to the wear sensor adjusting plate (3) and wear compensation plate (4) as well.
  • the pressure plate (2) moves towards the clutch disc and the wear sensor (5) or sensors also move with the pressure plate (2) while their contact surface (19) is on or will be on clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly, thus, the setup distance (18) between wear sensor contact surface (19) and its mounting surface (20) increases as much as the total decrement in facing's thickness.
  • wear sensor adjusting plate (3) moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear sensor adjusting plate (3) to relatively rotate around pressure plate (2) by their screw threads-1 (15) in order to adjust or fix wear sensor (5) or sensors to the new setup distance (18).
  • the wear sensor adjusting plate (3) moves with relative rotation around the pressure plate (2) on their screw threads-1 (15) until re-setting contact with the wear sensor or sensors contact surface (19) to stop relative rotation. With this re-contact, wear sensor (5) or sensors is adjusted in the new setup distance (18) position by the wear sensor adjusting plate (3).
  • the wear sensor (5) or sensors can be replaced by the other types of digital or analog or mechanic sensors to detect the amount of wearing.
  • Screw threads-1 (15) on wear sensor adjusting plate (3) and pressure plate (2), screw threads-2 (16) on wear compensation plate (4) and pressure plate (2) can be replaced by other type plates having different shapes or forms such as inclined or declined surfaced plates as an alternative solution aside from screw threads to guide or drive or trigger the movement.
  • the stepper-1 (9) provides one way rotation for wear sensor adjusting plate (3) by preventing the movement in the opposite direction via cooperating with step cavity- 1 (1 1 ) and step teeth-1 (13). One way rotation of wear sensor adjusting plate (3) can be ensured by different mechanisms.
  • Wear compensation plate (4) does not rotate and maintains its position while being under diaphragm spring (8) force.
  • pressure plate (2) is lifted by straps (17) until lift of wear sensor adjusting plate (3) or pressure plate (2) directly or indirectly stopped by cover stopper lug (7) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly.
  • the diaphragm spring (8) continues its stroke- movement while the lift of pressure plate (2) directly or indirectly is stopped. This creates a gap distance between diaphragm spring (8) and wear compensation plate (4) and the force applied by the diaphragm spring (8) on the wear compensation plate (4) disappears.
  • the wear compensation plate (4) moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear compensation plate (4) to rotate and it moves by relatively rotating around the pressure plate (2) by their screw threads-2 (16) until re-setting contact with the wear sensor contact surface (19) to stop relative rotation.
  • the stepper-2 (10) provide one way rotation for wear compensation plate (4) by preventing the movement in the opposite direction via cooperating with step cavity-2 (12) and step teeth-2 (14).
  • One way rotation of wear compensation plate (4) can be ensured by different mechanisms.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The invention is related to a wear compensation mechanism in the clutch cover assembly which is primarily aiming to keep clutch pedal load, clutch clamp load and clutch setup height at a constant value or in a defined range.

Description

Description
WEAR-COMPENSATING CLUTCH
[01 ] The invention is related to a wear compensation mechanism in the clutch cover assembly which is primarily aiming to keep clutch pedal load, clutch clamp load and clutch setup height at a constant value or in a defined range.
[02] Clutch pedal load, clutch clamp load and clutch setup height varies in case wearing occurs in the clutch disc facings if clutch cover assembly does not possess a compensation mechanism to keep diaphragm spring (8) working position same as its initial position before the wearing occurred. Clutch pedal load gradually increases as long as diaphragm spring (8) working position changes due to wearing of clutch disc facings and it can reach a load level troubling driver comfort while the decline of clutch clamp load causes to loss in torque transfer capacity of clutch kit. Clutch cover assembly has to be replaced when its clamp load drops below minimum clamp load level needed for engaging.
[03] Clutch disc facings are worn mainly owing to engaging process and consequently their thicknesses decrease. Pressure plate (2) moves with the same amount of total decrement in facings' thickness towards to clutch disc and this movement alters the working position of diaphragm spring (8) which leads to change clutch clamp load, clutch pedal load and clutch setup height. By the movement of wear compensation plate (4), the invented mechanism compensates the total amount of facings' wear to keep the diaphragm spring (8) to maintain its initial working position even if wearing occurs. Clutch clamp load and clutch setup height remains stable, additionally, driver comfort is ensured by the invention as the clutch pedal load remains constant even if facings continue to wear. The mechanism compensates facings' wear thus clutch cover assembly also has a longer service life with the same technical characteristics as its initial situation.
[04] The wear sensor (5) or sensors are directly or indirectly mounted on the pressure plate (2) and initially, it touches or will touch to clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly and it touches or will touch to the wear sensor adjusting plate (3) and wear compensation plate (4) as well. If the thickness of facing is decreased or the thickness value is less than what it needs to be, the pressure plate (2) moves towards the clutch disc and the wear sensor (5) or sensors also move with the pressure plate (2) while their contact surface (19) is on or will be on clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly, thus, the setup distance (18) between wear sensor contact surface (19) and its mounting surface (20) increases as much as the total decrement in facing's thickness.
[05] This action creates a gap distance equal to the total wearing amount, between the wear sensor contact surface (19) and wear compensation plate (4) surface and between the wear sensor contact surface (19) and wear sensor adjusting plate (3) surface. In this new position or if a gap exists, wear sensor adjusting plate (3) moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear sensor adjusting plate (3) to relatively rotate around pressure plate (2) by their screw threads-1 (15) in order to adjust or fix wear sensor (5) or sensors to the new setup distance (18).
[06] The wear sensor adjusting plate (3) moves with relative rotation around the pressure plate (2) on their screw threads-1 (15) until re-setting contact with the wear sensor or sensors contact surface (19) to stop relative rotation. With this re-contact, wear sensor (5) or sensors is adjusted in the new setup distance (18) position by the wear sensor adjusting plate (3). The wear sensor (5) or sensors can be replaced by the other types of digital or analog or mechanic sensors to detect the amount of wearing. Screw threads-1 (15) on wear sensor adjusting plate (3) and pressure plate (2), screw threads-2 (16) on wear compensation plate (4) and pressure plate (2) can be replaced by other type plates having different shapes or forms such as inclined or declined surfaced plates as an alternative solution aside from screw threads to guide or drive or trigger the movement. The stepper-1 (9) provides one way rotation for wear sensor adjusting plate (3) by preventing the movement in the opposite direction via cooperating with step cavity- 1 (1 1 ) and step teeth-1 (13). One way rotation of wear sensor adjusting plate (3) can be ensured by different mechanisms.
[07] Wear compensation plate (4) does not rotate and maintains its position while being under diaphragm spring (8) force. When the diaphragm spring (8) is moved by clutch bearing, pressure plate (2) is lifted by straps (17) until lift of wear sensor adjusting plate (3) or pressure plate (2) directly or indirectly stopped by cover stopper lug (7) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly. The diaphragm spring (8) continues its stroke- movement while the lift of pressure plate (2) directly or indirectly is stopped. This creates a gap distance between diaphragm spring (8) and wear compensation plate (4) and the force applied by the diaphragm spring (8) on the wear compensation plate (4) disappears.
[08] The wear compensation plate (4) moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear compensation plate (4) to rotate and it moves by relatively rotating around the pressure plate (2) by their screw threads-2 (16) until re-setting contact with the wear sensor contact surface (19) to stop relative rotation.
[09] The stepper-2 (10) provide one way rotation for wear compensation plate (4) by preventing the movement in the opposite direction via cooperating with step cavity-2 (12) and step teeth-2 (14). One way rotation of wear compensation plate (4) can be ensured by different mechanisms.
[10] Explanations of Figures
[1 1 ] Figure 1 . Wear-Compensating Clutch
[12] Figure 2. Wear-Compensating Clutch Section View
[13] Figure 3. Stepping-1 Section View
[14] Figure 4. Stepping-2 Section View
[15] Figure 5. Pressure Plate View
[16] Figure 6. Wear Sensor Section View
[17] Index Explanations Indicated in Figures
[18] (1 ) Clutch Cover
[19] (2) Pressure Plate
[20] (3) Wear Sensor Adjusting Plate
[21 ] (4) Wear Compensation Plate
[22] (5) Wear Sensor
[23] (6) Cover Sensor Lug
[24] (7) Cover Stopper Lug
[25] (8) Diaphragm Spring
[26] (9) Stepper-1
[27] (10) Stepper-2
[28] (1 1 ) Step Cavity- 1
[29] (12) Step Cavity-2
[30] (13) Step Teeth-1
[31 ] (14) Step Teeth-2
[32] (15) Screw Threads-1
[33] (16) Screw Threads-2
[34] (17) Strap
[35] (18) Setup Distance
[36] (19) Wear Sensor Contact Surface
[37] (20) Mounting Surface

Claims

Claims
1 - The invention has a wear compensation mechanism in clutch cover assembly to compensate facing wear, it is characterized by having a pressure plate (2) which has step cavity-1 (1 1 ), step cavity-2 (12), step teeth-1 (13), step teeth-2 (14) to block undesired movements of wear sensor adjusting plate (3) and wear compensation plate (4), a wear sensor adjusting plate (3) to fix the wear sensor (5) in new position, a wear sensor (5) and cover sensor lug (6) or lugs to detect the amount of facings' wear, cover stopper lug (7) or lugs to create a gap, stepper-1 (9) and stepper-2 (10) to ensure one way rotations, and a wear compensation plate (4) to compensate the facings' wear.
2- According to claim 1 , the invention has a wear compensation mechanism in clutch cover assembly and it is characterized by having the wear sensor (5) or sensors directly or indirectly mounted on the pressure plate (2) and initially, it touches or will touch to clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly and it touches or will touch to the wear sensor adjusting plate (3) and wear compensation plate (4) as well, and if the thickness of facing is decreased or the thickness value is less than what it needs to be, the pressure plate (2) moves towards the clutch disc and the wear sensor (5) or sensors also move with the pressure plate (2) while their contact surface (19) is on or will be on clutch cover sensor lug (6) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly, thus, the setup distance (18) between wear sensor contact surface (19) and its mounting surface (20) increases as much as the total decrement in facing's thickness.
3- According to claim 1 or 2, the invention has a wear compensation mechanism in clutch cover assembly and it is characterized by having wear sensor adjusting plate (3) which moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear sensor adjusting plate (3) to relatively rotate around pressure plate (2) by their screw threads-1 (15) in order to adjust or fix wear sensor (5) or sensors to the new setup distance (18), and the wear sensor adjusting plate (3) moves with relative rotation around the pressure plate (2) on their screw threads-1 (15) until re-setting contact with the wear sensor or sensors contact surface (19) to stop relative rotation, and with this re-contact, wear sensor (5) or sensors is adjusted in the new setup distance (18) position by the wear sensor adjusting plate (3), and the wear sensor (5) or sensors can be replaced by the other types of digital or analog or mechanic sensors to detect the amount of wearing, and screw threads-1 (15) on wear sensor adjusting plate (3) and pressure plate (2), screw threads-2 (16) on wear compensation plate (4) and pressure plate (2) can be replaced by other type plates having different shapes or forms such as inclined or declined surfaced plates as an alternative solution aside from screw threads to guide or drive or trigger the movement, and the stepper-1 (9) provides one way rotation for wear sensor adjusting plate (3) by preventing the movement in the opposite direction via cooperating with step cavity-1 (1 1 ) and step teeth-1 (13).
4- According to claim 1 , 2, 3 the invention has a wear compensation mechanism in clutch cover assembly and it is characterized by having wear compensation plate (4) that does not rotate and maintains its position while being under diaphragm spring (8) force, and when the diaphragm spring (8) is moved by clutch bearing, pressure plate (2) is lifted by straps (17) until lift of wear sensor adjusting plate (3) or pressure plate (2) directly or indirectly stopped by cover stopper lug (7) or lugs or any internal or external part or any type of lug from flywheel or clutch cover (1 ) or the other parts of clutch cover assembly, and the diaphragm spring (8) continues its stroke-movement while the lift of pressure plate (2) directly or indirectly is stopped, and this creates a gap distance between diaphragm spring (8) and wear compensation plate (4) and the force applied by the diaphragm spring (8) on the wear compensation plate (4) disappears, and the wear compensation plate (4) moves by the starting behaviour of engine speed or stopping behaviour of engine speed or the oscillations in engine speed which are forcing the wear compensation plate (4) to rotate and it moves by relatively rotating around the pressure plate (2) by their screw threads-2 (16) until re-setting contact with the wear sensor contact surface (19) to stop relative rotation, and the stepper-2 (10) provide one way rotation for wear compensation plate (4) by preventing the movement in the opposite direction via cooperating with step cavity-2 (12) and step teeth-2 (14).
PCT/TR2016/050357 2016-03-07 2016-09-28 Wear-compensating clutch WO2017155486A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201602947 2016-03-07
TR2016/02947 2016-03-07

Publications (1)

Publication Number Publication Date
WO2017155486A1 true WO2017155486A1 (en) 2017-09-14

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ID=57861200

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2016/050357 WO2017155486A1 (en) 2016-03-07 2016-09-28 Wear-compensating clutch

Country Status (1)

Country Link
WO (1) WO2017155486A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029787A (en) * 1992-11-25 2000-02-29 Luk Lamellen Und Kupplungsbau Gmbh Self-adjusting friction clutch
US6193039B1 (en) * 1997-06-17 2001-02-27 Valeo Friction clutch with friction lining wear take-up device
WO2001075322A1 (en) * 2000-04-03 2001-10-11 Automotive Products Uk Limited Automatically adjusting clutches
DE102012210912A1 (en) * 2011-07-20 2013-01-24 Schaeffler Technologies AG & Co. KG Friction clutch has latches that are displaced towards pinion during displacement movement of pressure plate by spindle drive based on adjustment signal of sensor which detects change of clutch operation
DE102014206860A1 (en) * 2014-04-09 2015-10-15 Schaeffler Technologies AG & Co. KG Device for determining a state of wear of a clutch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029787A (en) * 1992-11-25 2000-02-29 Luk Lamellen Und Kupplungsbau Gmbh Self-adjusting friction clutch
US6193039B1 (en) * 1997-06-17 2001-02-27 Valeo Friction clutch with friction lining wear take-up device
WO2001075322A1 (en) * 2000-04-03 2001-10-11 Automotive Products Uk Limited Automatically adjusting clutches
DE102012210912A1 (en) * 2011-07-20 2013-01-24 Schaeffler Technologies AG & Co. KG Friction clutch has latches that are displaced towards pinion during displacement movement of pressure plate by spindle drive based on adjustment signal of sensor which detects change of clutch operation
DE102014206860A1 (en) * 2014-04-09 2015-10-15 Schaeffler Technologies AG & Co. KG Device for determining a state of wear of a clutch

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