KR101766026B1 - Dual clutch apparatus - Google Patents

Dual clutch apparatus Download PDF

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Publication number
KR101766026B1
KR101766026B1 KR1020150112388A KR20150112388A KR101766026B1 KR 101766026 B1 KR101766026 B1 KR 101766026B1 KR 1020150112388 A KR1020150112388 A KR 1020150112388A KR 20150112388 A KR20150112388 A KR 20150112388A KR 101766026 B1 KR101766026 B1 KR 101766026B1
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KR
South Korea
Prior art keywords
heat transfer
heat
pressure plates
pressure plate
pressure
Prior art date
Application number
KR1020150112388A
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Korean (ko)
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KR20170018999A (en
Inventor
조운기
Original Assignee
현대자동차주식회사
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Priority to KR1020150112388A priority Critical patent/KR101766026B1/en
Publication of KR20170018999A publication Critical patent/KR20170018999A/en
Application granted granted Critical
Publication of KR101766026B1 publication Critical patent/KR101766026B1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/385—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs double clutches, i.e. comprising two friction disc mounted on one driven shaft
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/02—Overheat protection, i.e. means for protection against overheating

Abstract

According to the present invention, a clutch cover is integrally rotated by being engaged with a flywheel; A plurality of pressure plates provided on the inner side of the flywheel so as to surround at least one or more clutch disks for transmitting power to the transmission input shaft; And a heat transfer part which is fixed to the clutch cover and is extended to connect the plurality of pressure plates so as to be heat-transferred between the plurality of pressure plates so that the heat of the pressure plate is transferred to another pressure plate when any one of the plurality of pressure plates is raised in temperature. A dual clutch device is introduced.

Description

DUAL CLUTCH APPARATUS

The present invention relates to a dual clutch device for preventing overheating of a clutch by transmitting heat to another pressure plate when the temperature of a specific pressure plate rises.

In recent years, Dual Clutch Transmission (DCT) has emerged as an automotive transmission technology. A typical dual clutch transmission configuration includes a pair of independently actuated input clutches that drive parallel ray shafts or countershafts spaced from parallel output shafts. One of the plurality of constantly engaged gears providing various forward gear ratios is freely rotatably disposed on one of the counter shafts and the other of the pair of gears is coupled to the output shaft.

A plurality of synchronizer clutches selectively couple one of the gears to the counter shaft to achieve the forward gear ratio.

The dual clutch transmission has a sporty and performance-oriented shift characteristic. Moreover, by suitable peripheral electronic and hydraulic components, the dual clutch transmission can function as a manual, semi-automatic or automatic transmission. In all cases, these components exhibit good fuel economy due to good gear engagement efficiency and flexibility in ratio selection. The clutch has a low spin loss which contributes to the overall operating efficiency.

In particular, the dual clutch transmission generally comprises two friction discs and a plurality of pressure plates selectively in contact with the friction discs such that the specific pressure plate is moved in accordance with the shifting conditions to transmit or release power while compressing or releasing the friction disc .

Here, in the case of the dry dual clutch transmission, the heat energy is proportional to the slip amount of the friction disk, the transmission torque, and the slip occurrence time, so that a high gradient, . At this time, the cooling performance depends largely on the heat capacity of the friction clutch and the pressure plate, and a warning may be generated early due to overheating of the specific pressure plate.

Therefore, it is necessary to prevent the early occurrence of the clutch overheat warning due to the overheating of the friction clutch by inducing the temperature of the pressure plate to be lowered when the specific pressure plate is overheated due to the high load operation.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

KR 10-2010-0066373 A (2010.06.17)

It is an object of the present invention to provide a dual clutch device for preventing overheating of a clutch by transmitting heat to another pressure plate when a temperature of a specific pressure plate is increased.

According to an aspect of the present invention, there is provided a dual clutch device comprising: a clutch cover coupled to a flywheel and rotated integrally; A plurality of pressure plates provided on the inner side of the flywheel so as to surround at least one or more clutch disks for transmitting power to the transmission input shaft; And a heat transfer part which is fixed to the clutch cover and is extended to connect the plurality of pressure plates so as to be heat-transferred between the plurality of pressure plates so that the heat of the pressure plate is transferred to another pressure plate when any one of the plurality of pressure plates is raised in temperature. .

And the heat transfer portion extends from the clutch cover in the same direction as the input shaft and is connected to the outer peripheral edges of the plurality of pressure plates.

The heat transfer part is formed in a semicircular shape having a curved part and a planar part of a flat part, and the circular part is inserted and connected to the outer peripheral end of the pressure plate.

And a spline portion formed of a plurality of gear protrusions spaced at predetermined intervals along the circumference of the heat transfer portion and protruding to extend in the longitudinal direction is formed in the circular portion of the heat transfer portion.

The plurality of pressure plates are provided with coupling portions protruding from the outer circumferential ends of the plurality of pressure plates, and the circular portion of the heat transfer portion is inserted and connected to the coupling portions.

And a heat dissipation plate having a predetermined area is protruded from the flat portion of the heat transfer portion at predetermined intervals in the longitudinal direction.

The heat dissipation plate is protruded in a diagonal direction inclined at a predetermined angle with respect to the circumferential direction of the pressure plate.

The heat transfer part is made of aluminum or copper.

According to the dual clutch device having the above-described structure, when the temperature of a specific pressure plate is increased, it is prevented that the heat energy is concentrated on the specific pressure plate through the heat dispersion that transfers heat to the other pressure plate, .

1 shows a dual clutch device.
2 to 3 are views for explaining a heat transfer portion of a dual clutch device according to an embodiment of the present invention.

Hereinafter, a dual clutch device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a view showing a dual clutch device, and FIGS. 2 to 3 are views for explaining a heat transfer part of a dual clutch device according to an embodiment of the present invention.

Figure 1 shows a dual clutch device in which the dual clutch device consists of two clutch discs 60 and a plurality of pressure plates 200 selectively in contact with the clutch discs 60 And in the case of the pressure plate 200, three clutch discs 60 may be provided. Accordingly, the specific pressure plate 200 is moved in accordance with the shift condition and is compressed to the specific clutch disc 60, so that the power is transmitted to or released from the transmission input shaft 40.

Particularly, in the present invention, the temperature of the specific pressure plate 200 may be overheated according to various driving conditions such as a shift condition or a gradient condition. In the present invention, the temperature of the pressure plate 200 is dispersed to prevent the specific pressure plate 200 from being overheated do.

As shown in FIG. 2, the clutch cover 100 is integrally rotated with the flywheel 20; A pressure plate 200 disposed inside the flywheel 20 and configured to surround at least one or more clutch discs 60 that transmit power to the transmission input shaft 40; And a plurality of pressure plates 200 which are fixed to the clutch cover 100 and are extended to connect the plurality of pressure plates 200 to be heat-transferred between the plurality of pressure plates 200, And a heat transfer part 300 for transferring the heat of the pressure plate 200 to another pressure plate 200 when the pressure plate 200 is lifted.

That is, in the present invention, when the specific pressure plate 200 is overheated due to friction by forming the heat transfer part 300 that extends to connect the plurality of pressure plates 200 to each other and transmits heat between the plurality of pressure plates 200, The heat of the pressure plate 200 which is overheated by the pressure plate 200 is dispersed, thereby preventing overheating due to accumulation of heat of any one specific clutch disc 60, such as one-stage or R- It is possible to prevent early occurrence.

2, the first pressure plate 200a of the three pressure plates 200 of the first pressure plate 200a, the second pressure plate 200b, and the third pressure pin 200c is heated by friction The heat of the first pressure plate 200a is conducted to the second pressure plate 200b and the third pressure pin 200c through the heat transfer unit 300 so that the temperature increase of the first pressure plate 200a is suppressed .

The heat transfer unit 300 may extend from the clutch cover 100 in the same direction as the input shaft 40 and may be connected to the outer peripheral ends of the plurality of pressure plates 200. [

In this way, the heat transfer part 300 is connected to the outer peripheral ends of the plurality of pressure plates 200 in the same direction as the transmission input shaft 40 so as to allow heat conduction between the pressure plates 200. The heat transfer portion 300 is connected to the outer circumferential end of the pressure plate 200 so that when the pressure plate 200 is brought into contact with the clutch disk 60 and the thermally conductive portion is not in contact with the clutch disk 60, 60 can be prevented from being damaged.

The heat transfer portion 300 is fixed to the clutch cover 100. In the case of the flywheel 20, various configurations such as a shock absorbing damper spring and a friction member are provided, and the heat transfer portion 300 is preferably fixed to the clutch cover 100 Do.

The heat transfer part 300 is formed in a semicircular shape having a curved part 320 and a flat part 340. The circular part 320 is formed on the outer peripheral edge of the pressure plate 200 Can be inserted and connected.

That is, the heat transfer part 300 is formed in a semicircular shape having a circular part 320 and a flat part, and the circular part 320 is inserted and connected to the outer peripheral end of the pressure plate 200 to connect the heat transfer part 300 can be inserted and connected smoothly in the axial direction.

The heat transfer part 300 is formed by the flat portion 340 of the flat portion opposite to the circular portion 320 so that the installation space in the flywheel 20 and the clutch cover 100 can be reduced.

A spline portion 322 is formed in the circular portion 320 of the heat transfer portion 300. The spline portion 322 includes a plurality of gear protrusions 322-2 protruding from the circular portion 320 at predetermined intervals along the circumference of the heat transfer portion 300 and extending in the longitudinal direction .

The circular part 320 of the heat transfer part 300 is inserted into and connected to the pressure plate 200. The spline part 322 includes a plurality of gear protrusions 322-2 along the circumference of the circular part 320, The contact area with the pressure plate 200 is increased by the plurality of gear protrusions 322-2 so that the heat conduction between the plurality of pressure plates 200 can be performed quickly.

The gear protrusion 322-2 formed in the circular portion 320 of the heat transfer portion 300 is formed to extend in the longitudinal direction in the same direction as the transmission input shaft 40 so that the pressure plate 200 is connected to the heat transfer portion 300 It can be smoothly moved in the inserted state.

The plurality of pressure plates 200 may have a coupling part 220 protruding from an outer circumferential end thereof and the circular part 320 of the heat transfer part 300 may be inserted into the coupling part 220 and connected thereto.

The plurality of pressure plates 200 are formed so that the coupling portions 220 protrude from the outer circumferential ends of the plurality of pressure plates 200 and the heat transfer portion 300 is connected to the coupling portions 220, It is possible to prevent the heat transfer portion 300 from contacting the clutch disc 60. When the heat transfer portion 300 is inserted into and connected to the surface of the pressure plate 200, when the pressure plate 200 and the clutch disc 60 are brought into close contact with each other, the heat transfer portion 300 contacts the clutch disc 60, Damage may be caused to the protective film 60. Accordingly, when the pressure plate 200 and the clutch disc 60 are brought into contact with each other, the coupling portion 220 is protruded from the outer peripheral edge of the pressure plate 200 and the heat transfer portion 300 is connected to the coupling portion 220, The heat transfer portion 300 is not in contact with the clutch disc 60 to prevent the clutch disc 60 from being damaged.

3, a heat radiating plate 342 having a predetermined area may be protruded from the flat surface 340 of the heat transfer part 300 at regular intervals in the longitudinal direction.

A plurality of heat dissipating plates 342 having a predetermined area are formed on the flat surface portion 340 of the heat transfer portion 300 so that the flat surface portion 340 exposed to the air contacts the air through the heat dissipating plate 342 So that efficient heat dissipation can be performed.

Particularly, the heat dissipation plate 342 protrudes in a slanting direction inclined at a predetermined angle with respect to the circumferential direction of the pressure plate 200, so that the heat radiation plate 342, the air inside the flywheel 20 and the clutch cover 100 So that the efficiency of convective cooling can be further improved.

As the pressure plate 200 is overheated by forming the heat radiating plate 342 having a predetermined area in a slanting line on the flat surface portion 340 of the heat transferring portion 300 as described above, when the heat is transmitted to the heat transferring portion 300, 342 so as to perform efficient heat dissipation through convection cooling with air.

In addition, the heat transfer part 300 may be made of aluminum or copper so that the heat between the pressure plates 200 can be transferred more quickly.

When the temperature of the specific pressure plate 200 is increased, heat is transferred to the other pressure plate 200 through the heat transfer portion 300, and the heat generated by the pressure plate 200 ) To prevent heat energy from concentrating.

In addition, since the heat transfer portion 300 has the spline portion 322 formed of the plurality of gear protrusions 322-2, the contact area between the pressure plate 200 and the heat transfer portion 300 is increased, The heat transfer part 300 is provided with a heat dissipating plate 342 protruding from the heat transfer part 300 so that the pressure plate 200 can be cooled by the convection cooling by the convection heat transfer, So that the specific pressure plate 200 is prevented from reaching the overheat warning temperature in a short time.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

20: flywheel 40: input shaft
60: clutch disc 100: clutch cover
200: pressure plate 220:
300: heat transfer part 320: circular part
322: spline portion 322-2: gear projection
340: flat portion 342: heat dissipating plate

Claims (8)

A clutch cover integrally rotated in association with the flywheel;
A plurality of pressure plates provided on the inner side of the flywheel so as to surround at least one or more clutch disks for transmitting power to the transmission input shaft; And
A heat transfer unit fixed to the clutch cover and extending to connect the plurality of pressure plates so as to be heat-transferred between the plurality of pressure plates, thereby transferring the heat of the pressure plates to the other pressure plates when the temperature of one of the plurality of pressure plates is increased; / RTI >
Wherein the heat transfer part is formed in a semicircular shape having a curved part and a flat part, and the circular part is inserted and connected to an outer peripheral end of the pressure plate. The method according to claim 1,
Wherein the heat transfer portion extends in the same direction as the input shaft in the clutch cover and is connected to a plurality of pressure plate outer peripheral ends. delete The method according to claim 1,
And a spline portion formed of a plurality of gear protrusions spaced at predetermined intervals along the circumference of the heat transfer portion and protruding to extend in the longitudinal direction is formed in the circular portion of the heat transfer portion. The method according to claim 1,
Wherein the plurality of pressure plates are provided with engaging portions protruding from the outer circumferential ends of the plurality of pressure plates, and circular portions of the heat transfer portions are inserted into the engaging portions. The method according to claim 1,
Wherein a heat dissipating plate having a predetermined area is protruded from the flat portion of the heat transfer portion at regular intervals in the longitudinal direction. The method of claim 6,
Wherein the heat dissipating plate is protruded in a diagonal direction inclined at a predetermined angle with respect to a circumferential direction of the pressure plate. The method according to claim 1,
Wherein the heat transfer part is made of aluminum or copper.
KR1020150112388A 2015-08-10 2015-08-10 Dual clutch apparatus KR101766026B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150112388A KR101766026B1 (en) 2015-08-10 2015-08-10 Dual clutch apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150112388A KR101766026B1 (en) 2015-08-10 2015-08-10 Dual clutch apparatus

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KR20170018999A KR20170018999A (en) 2017-02-21
KR101766026B1 true KR101766026B1 (en) 2017-08-08

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Publication number Priority date Publication date Assignee Title
KR102623941B1 (en) * 2018-12-27 2024-01-10 현대트랜시스 주식회사 System and method for controlling clutch of vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012220016A (en) 2011-04-14 2012-11-12 Honda Motor Co Ltd Device for controlling transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100140036A1 (en) 2008-12-08 2010-06-10 Gm Global Technology Operations, Inc. Compact dry dual clutch module

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012220016A (en) 2011-04-14 2012-11-12 Honda Motor Co Ltd Device for controlling transmission

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