IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0432720
(2001-10-30)
|
우선권정보 |
DE-0058925 (2000-11-28) |
국제출원번호 |
PCT/EP01/12519
(2003-09-23)
|
§371/§102 date |
20030923
(20030923)
|
국제공개번호 |
WO02/44002
(2002-06-06)
|
발명자
/ 주소 |
- Grundw?rmer, Richard
- Staltmeir, Josef
- Vohla, Manfred
|
출원인 / 주소 |
- Knorr-Bremse Systeme f?r Schienenfahrzeuge GmbH
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
4 |
초록
▼
The invention relates to a brake actuator, especially for a rail vehicle brake, comprising a service brake unit with a brake force generator for applying and/or releasing the brake, an accumulator brake unit with an energy accumulator device for accumulating and delivering energy for applying the br
The invention relates to a brake actuator, especially for a rail vehicle brake, comprising a service brake unit with a brake force generator for applying and/or releasing the brake, an accumulator brake unit with an energy accumulator device for accumulating and delivering energy for applying the brake as an operative emergency brake and/or as a parking brake, and a force conversion device for converting the energy that is provided by the brake force generator and/or the energy accumulator device into a brake application movement. The invention provides that the brake actuator has an additional energy accumulator device for accumulating and delivering energy for applying and/or releasing the brake. The additional energy accumulator device and the brake force generator can be designed in such a way that the force required of the brake force generator during a braking operation in order to generate a defined brake application force level that is greater than zero but less than the maximum brake force is zero.
대표청구항
▼
1. A brake actuator for a rail vehicle brake comprising:a) a service brake unit having a braking force generator for the application and/or release of the brake, b) an energy storage brake unit having a first energy accumulator for accumulating and supplying energy for the application of the brake a
1. A brake actuator for a rail vehicle brake comprising:a) a service brake unit having a braking force generator for the application and/or release of the brake, b) an energy storage brake unit having a first energy accumulator for accumulating and supplying energy for the application of the brake as one or more of an operational emergency brake and a parking brake, c) a force conversion device for converting the energy supplied by one or more of the braking force generator and the first energy accumulator to a brake application movement, d) a second energy accumulator for accumulating and supplying energy for the application of the brake and including at least one accumulator-type spring mechanically and operably connected in parallel to the braking force generator and to the first energy accumulator, e) the brake force generator and the accumulator-type spring being mutually coordinated such that, during a service braking, the accumulator-type spring alone generates a defined braking force between a minimal and a maximal braking force, or the accumulator-type spring and braking force generator, in an addition of force, generate a braking force higher than the defined braking force, or the accumulator-type spring and the braking force generator, in a subtraction of force, generate a braking force lower than the defined braking force, and f) the accumulator-type spring, together with the first energy accumulator, in the event of an emergency braking and/or parking braking, being activated in the brake application direction. 2. The brake actuator according to claim 1, wherein the braking force generator is an electric motor which can be operated in a four-quadrant operation.3. The brake actuator according to claim 2, wherein the accumulator-type spring is a radially exterior accumulator-type spring which embraces a radially interior accumulator-type spring of the first energy accumulator.4. The brake actuator according to claim 3, wherein one end of the interior accumulator-type spring and one end of the exterior accumulator-type spring are supported on an actuator housing, and another end of the interior accumulator-type spring is supported on an inner sliding sleeve, and another end of the exterior accumulator-type spring is supported on an outer sliding sleeve.5. The brake actuator according to claim 4, wherein the inner and the outer sliding sleeve are arranged coaxial to one another and are displaceably guided on one another in the axial direction, the outer sliding sleeve engages an axial stop of the inner sliding sleeve against the brake application direction.6. The brake actuator according to claim 5, wherein the outer sliding sleeve is connected with a connecting rod for applying the application force to a caliper.7. The brake actuator according to claim 3, wherein the electric motor is mechanically connected in series with the interior accumulator-type spring and is mechanically connected in parallel with the exterior accumulator-type spring.8. The brake actuator according to claim 4, wherein the force conversion device contains a nut/spindle constructional unit with a brake spindle to which the electric motor is axially applied, the nut/spindle constructional unit converting the rotating movements of the electric motor into a linear displacement of the brake spindle.9. The brake actuator according to claim 8, wherein the interior accumulator-type spring and the exterior accumulator type spring are arranged coaxially with respect to the brake spindle.10. The brake actuator according to claim 2, including a permanent magnet brake with the electric motor wherein the magnet brake is closed when it is not energized and opened when it is energized.11. The brake actuator according to claim 8, wherein a nut of the nut/spindle constructional unit is non-rotatably held by the outer sliding sleeve.12. The brake actuator according to claim 8, wherein the brake spindle is axially displaceably but non-rotatably with respect to and guided in a hollow shaft of the electric motor or a transmission.13. The brake actuator according to claim 12, wherein the brake spindle is rotatably but axially fixedly disposed inside the inner sliding sleeve.14. The brake actuator according to claim 13, including an electromagnetically operable locking device for locking the axial position of the inner sliding sleeve.
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