The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geo
The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.
대표청구항▼
1. A self-amplifying electromechanical partial lining disc brake, comprising: a friction brake pad (14);a brake disc (16);an electromechanical actuating device (36, 38), which presses the friction brake pad (14) against the brake disc (16) to actuate the partial lining disc brake (10); and a self-am
1. A self-amplifying electromechanical partial lining disc brake, comprising: a friction brake pad (14);a brake disc (16);an electromechanical actuating device (36, 38), which presses the friction brake pad (14) against the brake disc (16) to actuate the partial lining disc brake (10); and a self-amplification device equipped with a ramp mechanism (24, 28), the ramp mechanism (24, 28) supporting the friction brake pad (14) in a movable fashion in a circumferential direction and at a ramp angle in relation to the brake disc (16), the self-amplification device converting a friction force exerted by the rotating brake disc (16) on the friction brake pad (14) pressed against the brake disc (16) during braking into a pressing force that presses the friction brake pad (14) against the brake disc (16) in addition to a pressing force exerted by the actuating device (36, 38), the ramp mechanism having three ramps (28) along which roller elements (24) roll and which support the friction brake pad (14), the roller elements (24) being situated at the corners of an imaginary triangle (34), wherein the actuating device (36, 38) exerts a force on the friction brake pad (14) at an angle to the brake disc (16) along a line of action that passes through the imaginary triangle between and apart from the roller elements (24), wherein the ramps (28) have a transverse inclination, and the transverse inclination of a ramp (28) that is spaced a smaller distance apart from the rotation axis of the brake disc (16) is inclined in the opposite direction from the transverse inclination of a ramp (28) that is spaced a larger distance apart from the rotation axis of the brake disc (16). 2. The partial lining disc brake according to claim 1, wherein the line of action of the actuating force, which the actuating device (36, 38) exerts on the friction brake pad (14), passes through a centroid of the imaginary triangle (34). 3. The partial lining disc brake according to claim 1, wherein an intersection point of the line of action of the actuating force, which the actuating device (36, 38) exerts on the friction brake pad (14), with the imaginary triangle (34) is spaced the same distance apart from a rotation axis of the brake disc (16) as an effective friction radius of the friction brake pad (14). 4. The partial lining disc brake according to claim 1, wherein the line of action of the actuating force, which the actuating device (36, 38) exerts on the friction brake pad (14), extends in the movement direction of the friction brake pad (14). 5. The partial lining disc brake according to claim 1, wherein the partial lining disc brake (10) has a retaining spring (40), which acts on the friction brake pad (14) in the direction of the ramp mechanism (24, 28), and a line of action of the retaining spring (40) passes through the imaginary triangle. 6. The partial lining disc brake according to claim 5, wherein the line of action of the retaining spring (40) is spaced the same distance apart from a rotation axis of the brake disc (16) as the effective friction radius of the friction brake pad (14). 7. The partial lining disc brake according to claim 1, wherein the actuating device has a rack (36) and has a pinion (38), which meshes with the rack (36), and the rack (36) extends in a movement direction of the friction brake pad (14). 8. The partial lining disc brake according to claim 1, wherein the ramp mechanism (24, 28) has roller elements (24) that are supported at fixed positions and in a rotary fashion, which roll along the ramps (28). 9. A self-amplifying electromechanical partial lining disc brake, comprising: a friction brake pad;a brake disc;an electromechanical actuating device, which presses the friction brake pad against the brake disc to actuate the partial lining disc brake; anda self-amplification device equipped with a ramp mechanism supporting the friction brake pad in a movable fashion in a circumferential direction and at a ramp angle in relation to the brake disc, the self-amplification device converting a friction force exerted by the rotating brake disc on the friction brake pad pressed against the brake disc during braking into a pressing force that presses the friction brake pad against the brake disc in addition to a pressing force exerted by the actuating device, the ramp mechanism having three or more ramps along which roller elements roll and which support the friction brake pad, the roller elements being situated at the vertices of an imaginary shape defined between the ramps, wherein the actuating device exerts an actuating force on the friction brake pad along a line of action that originates within and passes through the imaginary shape between and apart from the roller elements. 10. The partial lining disc brake according to claim 9, wherein the line of action of the actuating force, which the actuating device exerts on the friction brake pad, passes through a centroid of the imaginary shape. 11. The partial lining disc brake according to claim 9, wherein an intersection point of the line of action of the actuating force, which the actuating device exerts on the friction brake pad, with the imaginary shape is spaced the same distance apart from a rotation axis of the brake disc as an effective friction radius of the friction brake pad. 12. The partial lining disc brake according to claim 9, wherein the partial lining disc brake has a retaining spring, which acts on the friction brake pad in the direction of the ramp mechanism, and a line of action of the retaining spring passes through the imaginary shape. 13. A self-amplifying electromechanical partial lining disc brake, comprising: a friction brake pad (14);a brake disc (16);an electromechanical actuating device (36, 38), which presses the friction brake pad (14) against the brake disc (16) to actuate the partial lining disc brake (10); and a self-amplification device equipped with a ramp mechanism (24, 28), the ramp mechanism (24, 28) supporting the friction brake pad (14) in a movable fashion in a circumferential direction and at a ramp angle in relation to the brake disc (16), the self-amplification device converting a friction force exerted by the rotating brake disc (16) on the friction brake pad (14) pressed against the brake disc (16) during braking into a pressing force that presses the friction brake pad (14) against the brake disc (16) in addition to a pressing force exerted by the actuating device (36, 38), the ramp mechanism having three ramps (28) along which roller elements (24) roll and which support the friction brake pad (14), the roller elements (24) being situated at the corners of an imaginary triangle (34), wherein the actuating device (36, 38) exerts at least one force on the friction brake pad (14) at an angle to the brake disc (16) along a line of action, in which the line of action of each of said at least one force passes through the imaginary triangle between and apart from the roller elements (24), wherein the ramps (28) have a transverse inclination, and the transverse inclination of a ramp (28) that is spaced a smaller distance apart from the rotation axis of the brake disc (16) is inclined in the opposite direction from the transverse inclination of a ramp (28) that is spaced a larger distance apart from the rotation axis of the brake disc (16). 14. A self-amplifying electromechanical partial lining disc brake, comprising: a friction brake pad;a brake disc;an electromechanical actuating device, which presses the friction brake pad against the brake disc to actuate the partial lining disc brake; anda self-amplification device equipped with a ramp mechanism supporting the friction brake pad in a movable fashion in a circumferential direction and at a ramp angle in relation to the brake disc, the self-amplification device converting a friction force exerted by the rotating brake disc on the friction brake pad pressed against the brake disc during braking into a pressing force that presses the friction brake pad against the brake disc in addition to a pressing force exerted by the actuating device, the ramp mechanism having three or more ramps along which roller elements roll and which support the friction brake pad, the roller elements being situated at the vertices of an imaginary shape defined between the ramps, wherein the actuating device exerts at least one actuating force on the friction brake pad along a line of action, in which the line of action of each of said at least one actuating force originates within and passes through the imaginary shape between and apart from the roller elements.
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이 특허에 인용된 특허 (3)
Dietrich Johannes,DEX ; Gombert Bernd,DEX ; Grebenstein Markus,DEX, Electromechanical brake with self-energization.
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