Clutch and/or brake module

Abstract

A clutch and/or brake module has a heat sink which is attached to a transmission housing for the purpose of discharging heat. The brake module further has a brake disc, which is connected to a rotational member formed by a shaft (schematically indicated by a center line). The brake disc is provided on one side with a lining and faces with this side towards the heat sink. The brake is a dry brake and is not lubricated. The brake module further has an actuation system (cylinder with piston movable therein, schematically indicated by an arrow) which can exert an axial pressing force directly on the brake disc. The brake disc is located axially between the heat sink and the actuation system. The cooling plate is secured to a transmission housing, a part of which is schematically shown.

Claims

1. A brake module comprising: a heat sink, which does not rotate and is attached to a cooling body for the purpose of discharging heat, wherein the cooling body is a transmission housing or a flywheel housing; a friction disc which is connected to a rotational member which can rotate about a same axis as the friction disc, the friction disc on at least one side is provided with a lining and the at least one side with the lining is facing towards the heat sink; wherein the friction disc is dry; and an actuation system which can move the friction disc axially so that the lining of the friction disc is pressed against the heat sink, wherein no axially movable heat sink is present in the brake module.

2. The brake module according to claim 1, further comprising a pressure plate, which is located axially between the friction disc and the actuation system, wherein the actuation system can exercise an axial pressure force on the pressure plate.

3. The brake module according to claim 2, wherein a friction plate and the pressure plate are fixed to one another in a direction of rotation.

4. The brake module according claim 1, wherein the rotational member is connected to a first rotation body of an epicyclic gearing, wherein a second rotation body of the epicyclic gearing can be connected to a drive source and a third rotation body can be connected to wheels of a vehicle or an input shaft of a transmission, wherein the epicyclic gearing is non-lubricated or is lubricated by grease.

5. A brake module comprising: a heat sink, which does not rotate and is attached to a cooling body for the purpose of discharging heat, wherein the cooling body is a transmission housing or a flywheel housing; a friction disc which is connected to a rotational member which can rotate about a same axis as the friction disc, the friction disc on at least one side is provided with a lining and the at least one side with the lining is facing towards the heat sink; wherein the friction disc is dry; and an actuation system which can move the friction disc axially so that the lining of the friction disc is pressed against the heat sink, wherein the heat sink is the only heat sink of the brake module, through which friction heat is discharged upon actuation of the friction disc.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be further elucidated below on the basis of drawings. These drawings show embodiments of the clutch and/or brake module according to the present invention. In the drawings:

(2) FIG. 1 is a basic embodiment of a brake module according to the invention;

(3) FIGS. 2 and 3 show two embodiments, in which the actuation force of an actuator is transmitted to the friction disc through an axial bearing;

(4) FIGS. 4 and 5 show two further embodiments, in which the actuation force of the actuator is transmitted to the friction disc through an axial bearing;

(5) FIG. 6 shows an embodiment, in which the axial force is transmitted to two friction wheels through a lever;

(6) FIG. 7 shows an embodiment, in which by means of a roller bearing, the axial force is transmitted to the pressure plate;

(7) FIG. 8 shows an embodiment of a clutch module according to the invention;

(8) FIGS. 9 and 10 show embodiments of a clutch module, wherein the heat sink is located between two friction discs;

(9) FIG. 11 shows an embodiment in which a ring gear is connected to the heat sink;

(10) FIG. 12 shows an embodiment of a brake module according to the invention equipped with a clutch; and

(11) FIG. 13 is an alternative brake module, which is not part of the invention, with two cooling plates of which one is axially movable.

DETAILED DESCRIPTION OF THE DRAWINGS

(12) In FIG. 1 a basic embodiment of the clutch and/or brake module according to the invention is shown, which module is designed as a brake module. The brake module 1 has a heat sink 3 which is attached to a cooling body for the purpose of discharging heat. In this embodiment the cooling body is a transmission housing. The brake module further has a brake disc 5 (friction disc), which is connected to a rotational member formed by a shaft 7 (schematically indicated by a center line). The brake disc is provided on one side with a lining 9, and faces with this side towards the heat sink 3. The brake is a dry brake and is not lubricated.

(13) The brake module further has an actuation system 11 (cylinder with piston movable therein, schematically indicated by an arrow) which can exert an axial pressing force directly on the brake disc 5. The brake disc is located axially between the heat sink and the actuation system. The heat sink 3 is secured to a transmission housing 13, a part of which is schematically shown.

(14) FIGS. 2 and 3 show two embodiments of the brake module 1 and 1 in which the actuation force of a plunger of the actuation system 11 is transmitted to the brake disc 5 through an axial bearing 15 and through a pressure plate 17. The thrust bearing is oil lubricated or grease lubricated. The plunger can be positioned on different radii by the use of an intermediate plate 19. The actuation system is such that from the fixed world the axial force can be exerted on the pressure plate.

(15) FIGS. 4 and 5 show two further embodiments in which the force of the actuation system is transmitted on the friction disc through an axial bearing. In the brake modules 21 and 21, a lever 23 is provided which can increase the pressure force to the brake disc. In the embodiment shown in FIG. 4 the reaction force is supported on a further thrust bearing 25 and in the embodiment shown in FIG. 5, the reaction force is supported on a second brake disc 27, which is tangentially coupled to the first disc, but is axially movable with respect to this brake disc.

(16) FIG. 6 shows an embodiment of the brake module 31, in which the axial force on the two friction discs 35 and 37 is transmitted by means of a lever 33. In this embodiment the heat sink 39 is located between the two brake discs. The pressure plate can be activated by a compression spring, which increases the actuation force on the pressure plate.

(17) FIG. 7 shows an embodiment of the brake module 41, in which the axial force is transferred on the pressure plate 45 through a rolling bearing 43. The axis of rotation of the rolling bearing is (substantially) at right angles to the axis of rotation of the brake disc 47.

(18) FIG. 8 shows an embodiment of a clutch module 51 in accordance with the invention. The clutch disc 53 is connected to a pressure plate 55 and the cooling plate 57 constitutes the heat sink of the clutch. The axial force is applied to the pressure plate through a first axial bearing 59 and a lever 61. The reaction force is supported on the heat sink via a further axial bearing 63. The heat sink is attached to or is a part of an engine flywheel 65 of an internal combustion engine and is (or can be) attached to a crankshaft. The clutch is closed when not energized.

(19) FIGS. 9 and 10 show embodiments of the clutch module 71, 71, wherein the heat sink 73 is located halfway between two friction discs 75 and 77. The friction discs are tangentially connected with each other, and can move axially relative to each other. In the embodiment shown in FIG. 9, in the non-actuated state the clutch is closed and in the embodiment shown in FIG. 10 in non-actuated state the clutch is open.

(20) FIG. 11 shows an embodiment of the clutch module 81 in which a ring gear 83 is connected to the heat sink 85. Between the ring gear and the heat sink a one way bearing/clutch may be present (for start-stop application).

(21) In FIG. 12 an embodiment of a brake module 91 is shown which is equipped with a clutch 93 and which is connected to a flywheel via a planetary gear set 95. The pressure plate is connected via an intermediate plate to a first rotation body of the planetary set, wherein a second rotation body of the planetary set is connected to a drive source and a third rotation body is connected to one of the wheels of a vehicle or to an input shaft of a transmission comprising at least two different ratios and being connected to one or more of the wheels of a vehicle. A clutch may be present between two rotation bodies of the epicyclic gearing. The planetary set is non-lubricated or grease lubricated.

(22) FIG. 13 shows an alternative brake module 101, which is not part of the invention represented by the two heat sinks 103 and 105 one of which is formed by an axially movable plunger. This plunger is cooled by a cooling liquid which also during the movement of the plunger continues to flow through a cooling channel 107 present in the plunger.

(23) Although the present invention is elucidated above on the basis of the given drawings, it should be noted that this invention is not limited whatsoever to the embodiments shown in the drawings. The invention also extends to all embodiments deviating from the embodiments shown in the drawings within the context defined by the claims.