DE3932529C2 - Actuator for a hydraulic brake or clutch system - Google Patents

Description

The invention relates to an actuating device for a hydraulic brake or clutch system with a pedal and a master cylinder, which consists of a housing, a Kol ben and a pressure chamber formed by the piston and housing consists of, the pedal and a push rod to the piston operation pivotally attached to a common support are.

From EP 02 93 082 A2 is already an actuator known in the master cylinder and pedal are arranged in the passenger compartment. The be there Written version provides the master cylinder one to fix on the one hand on the carrier and on the other hand on the pedal, so that when the pedal is pressed, the piston goes into the housing is pressed. It is disadvantageous with this actuation establishment, however, to see that very many items must be installed. Furthermore, this is partly hidden protruding housing the risk that the driver gets stuck on it and is startled, causing it to fall under May even cause an accident.

The invention is therefore based on the task of a compact, easy to assemble, robust, completely in the driving Actuator attachable for a hy  to propose drastic brake or clutch system, their Operation is just as easy and safe as conventional ones Facilities where the master cylinder is in the engine compartment is ordered.

The task is characterized by the characteristics of the contractor spell 1 solved. The fact that the master cylinder housing in the pedal is integrated, some components are inserted saves, making assembly faster, easier and cheaper becomes cheaper. In addition, there are no places where the driver can get stuck during operation.

A particularly inexpensive and weight-saving version Rungsform the invention provides for the complete operation to manufacture equipment from plastic. The subclaims 2 to 8 describe advantageous developments of the Erfin subject matter and are hereinafter based on the drawing explained. This shows the actuator from the side, partially broken open.

One can see the pedal 1 with the footrest surface 2 at its free end 3 and the other end 6 fastened to the support 4 by means of a bolt 5 . The pedal is S-shaped curved GE, and in the carrier 4 adjacent bend 7 , the housing 8 of the master cylinder 9 is integrated. The housing 8 is open on the side facing the carrier 4 of the pedal 1 , a closure piece 10 being inserted into the open side. This closure piece 10 is used on the one hand to guide the piston 11 and on the other hand forms the stop 12 for this in the rest position. The piston 11 is sealed off from the housing 8 and the closure piece 10 . It forms, together with the housing 8, a pressure chamber 13 , from which, when actuated, hydraulic fluid passes through a first connection 14 and a hose line 15 to a Nehmereinrich device, not shown. The hose line 15 is secured on the bolt 5 ge. Therefore, it is always in a place where the driver cannot touch it, making accidents largely impossible. Indicated in the figure is a second circuit 16 , which on the one hand is in communication with a trailing container, not shown, and on the other hand with an annular space 17 in the housing 8 . The latter is decoupled from the pressure chamber 13 after a short actuation path.

The end 18 of the piston 11 protruding from the housing 8 has a spherical recess 19 for the articulated reception of a spherical end 20 of a pressure day 21 . On the other hand, the push rod 21 is held on the carrier 4 by means of a bolt 22 .

The housing 8 is attached to the pedal 1 so that it is located at the point which, when actuated, takes up the main part of the actuating torque indicated by the arrow 23 . Therefore, compared to known pedal arrangements with a master cylinder attached in the engine compartment, no material reinforcement is necessary. The arrangement described is particularly light and space-saving and also makes it possible to use the pedal return spring to reset the piston 11 in the housing 8 .

Reference list

1 pedal
2 footrest
3 free end
4 carriers
5 bolts
6 other end
7 bend
8 housing
9 master cylinders
10 closure piece
11 pistons
12 stop
13 pressure chamber
14 first connection
15 hose line
16 second connection
17 annulus
18 end
19 spherical recess
20 spherical end
21 push rod
22 bolts
23 arrow, actuation torque.

Claims (8)

1. Actuating device for a hydraulic brake or clutch system, with a pedal and a master cylinder, which consists of a housing, a piston and a pressure chamber formed by the piston and housing, the pedal and a push rod for actuating the piston being pivotable on a common carrier be fastened, characterized in that the housing ( 8 ) from a portion of the pedal ( 1 ) is ge. 2. Actuator according to claim 1, characterized in that the pedal ( 1 ) is made of plastic. 3. Actuating device according to claim 1 or 2, characterized in that the housing ( 8 ) is arranged in the curve ( 7 ) of the pedal, which receives the essential part of the actuating torque (arrow 23 ). 4. Actuating device according to one of the preceding claims, characterized in that a hose line ( 15 ) attached to the first connection ( 14 ) for connection to a slave device ( 15 ) together with the pedal ( 1 ) on a bolt ( 5 ) on the carrier ( 4 ) is attached. 5. Actuating device according to one of the preceding claims, characterized in that a closure piece ( 10 ) is inserted into the housing ( 8 ). 6. Actuating device according to claim 1, characterized in that the closure piece ( 10 ) forms a stop ( 12 ) for the piston ( 11 ) in the rest position. 7. Actuating device according to one of the preceding claims, characterized in that the push rod ( 21 ) is fastened with its second spherical end ( 20 ) in a spherical recess ( 19 ) of the piston ( 11 ). 8. Actuating device according to one of the preceding Claims, characterized in that a pedal return spring for resetting at the same time of the piston.