Vehicle brake system with an electronically controllable brake booster

Abstract

A vehicle brake system with an electronically controllable brake booster, comprising an actuation member ( 70, 80 ) transferring the actuation travel of a brake pedal to a master cylinder, which is allocated a travel limiting element ( 82 ) accepted between two abutment faces which limits the actuation travel of the actuation member ( 70 ), and a switching element ( 85 ) which upon an actuation movement of the actuation member ( 70 ) can be activated by one of the abutments ( 91, 91 a) in order to issue a signal to the controller of the brake booster, with the traveling limiting element being arranged on the actuation member ( 80 ) between two collars ( 83, 84 ), and a carrier ( 86 ) accepting the switching element ( 85 ) being arranged between the travel limiting element and one of the collars.

We claim:  
     
       1. A vehicle brake system with an electronically controllable brake booster, comprising 
       an actuation member ( 70 ,  80 ) transferring the actuation travel of a brake pedal to a master cylinder,  
       which is allocated a travel limiting element ( 82 ) accepted between two abutments ( 91 ,  92 ) which limits the actuation travel of the actuation member ( 70 ), and  
       a switching element ( 85 ) which upon an actuation movement of the actuation member ( 70 ,  80 ) can be activated by an abutment ( 91 a) in order to issue a signal to a controller of the brake booster, with  
       the travel limiting element ( 82 ) being arranged on the actuation member ( 70 ,  80 ) between two collars ( 83 ,  84 ), and  
       a carrier ( 86 ) accepting the switching element ( 85 ) being arranged between the travel limiting element ( 82 ) and one of the two collars ( 83 ,  84 ).  
     
     
       2. A vehicle brake system with an electronically controlled brake booster ( 40 ) with an additional air control which can be activated depending on the actuation dynamics of a brake pedal, and which comprises 
       an actuation member ( 70 ,  80 ) for transmitting the actuation movement of the brake pedal to a master cylinder, which is allocated a travel limiting element ( 82 ) accepted between two abutments ( 91 ,  92 ) which limits the actuation movement of the actuation member ( 70 ), and  
       a switching element ( 85 ) which can be activated by an abutment ( 91 a) upon an actuation movement of the actuation member ( 70 ,  80 ) in order to issue a signal to a controller of the brake booster, whereby  
       the travel limiting element ( 82 ) is arranged clearance-free in the direction of actuation at the actuation member ( 70 ,  80 ), and  
       a carrier ( 86 ) accepting the switching element ( 85 ) is connected with the travel limiting element ( 82 ).  
     
     
       3. The vehicle brake system according to  claim 2 , characterized in that 
       the travel limiting element ( 82 ) is arranged between two collars ( 83 ,  84 ) at the actuation element ( 70 ,  80 ), and the carrier ( 86 ) is arranged between the travel limiting element ( 82 ) and one of the two collars ( 83 ,  84 ).  
     
     
       4. A vehicle brake system with an electronically controllable brake booster, comprising 
       an actuation member ( 70 ,  80 ) transferring the actuation travel of a brake pedal to a master cylinder,  
       which is allocated a travel limiting element ( 823 ) accepted between two abutments ( 91 ,  92 ) which limits the actuation travel of the actuation member ( 70 ), and  
       a switching element ( 84 ) which upon an actuation movement of the actuation member ( 70 ,  80 ) can be activated by an abutment ( 91 a) in order to issue a signal to a controller of the brake booster, with  
       the travel limiting element ( 82 ) being arranged on the actuation member ( 70 ,  80 ), and  
       a carrier ( 86 ) accepting the switching element ( 85 ) being arranged at the travel limiting element ( 82 ).  
     
     
       5. A vehicle brake system according to  claim 4 , characterized in that 
       the travel limiting element ( 82 ) at the actuation member ( 70 ,  80 ) is arranged between two collars ( 83 ,  84 ) and the carrier ( 86 ) is arranged between the travel limiting element ( 82 ) and one of the two collars ( 83 ,  84 ).  
     
     
       6. A vehicle brake system according to  claim 4 , characterized in that 
       the carrier ( 86 ) comprises two claws ( 108 a,  108 b) which grip an actuation member ( 48 ) in an at least partially positive manner.  
     
     
       7. A vehicle brake system according to  claim 4 , characterized in that 
       the carrier ( 86 ) extends parallel to the travel limiting element ( 82 ) between the two abutments ( 91 ,  92 ).  
     
     
       8. A vehicle brake system according to  claim 4 , characterized in that 
       the carrier ( 86 ) comprises a carrier arm ( 114 ) on which the switching element ( 85 ) is arranged.  
     
     
       9. A vehicle brake system according to  claim 8 , characterized in that 
       at least one of the claws ( 108 a,  108 b) and the carrier arm ( 114 ) are formed from an elastic material.  
     
     
       10. A vehicle brake system according to  claim 8 , the previous claim, characterized in that 
       at least one of the claws ( 108 a,  108 b) and the carrier arm ( 114 ) are bent so that the travel limiting element ( 82 ) and the carrier ( 86 ) are accepted clearance free between two collars ( 83 ,  84 ).  
     
     
       11. A vehicle brake system according to  claim 8 , characterized in that 
       the carrier arm ( 114 ) is in contact with the travel limiting element ( 82 ).  
     
     
       12. A vehicle brake system according to  claim 4 , characterized in that 
       the switching element ( 85 ) protrudes between two legs ( 89 a,  89 b) of the travel limiting element ( 82 ) and is directed toward the abutment ( 91 a).  
     
     
       13. A vehicle brake system according to  claim 4 , characterized in that the switching element ( 85 ) comprises a pivotable control lever ( 102 ), a free end ( 106 ) of which can contact the abutment ( 91 a). 
     
     
       14. A vehicle brake system according to  claim 13 , characterized in that the abutment ( 91 a) is formed by a housing ( 42 ) of the brake booster. 
     
     
       15. A vehicle brake system according to  claim 13 , characterized in that the control lever ( 102 ) can be brought into contact with one of the two abutments ( 91 ,  91 a). 
     
     
       16. A vehicle brake system according to  claim 4 , characterized in that the switching element ( 85 ) is captively coupled with the travel limiting element ( 82 ) along the direction of the actuation movement of the actuation member ( 70 ,  80 ). 
     
     
       17. A vehicle brake system according to  claim 4 , characterized in that the switching element ( 85 ) is captively coupled with the travel limiting element ( 82 ) by at least one retaining member ( 200 ), with the retaining member ( 200 ) connecting the carrier ( 86 ) or the switching element ( 85 ) with the travel limiting element ( 82 ). 
     
     
       18. A vehicle brake system according to  claim 17 , characterized in that that the retaining member ( 200 ) comprises at least one bent clip ( 88 ) which grips the travel limiting element ( 82 ) in an at least partially positive manner. 
     
     
       19. A vehicle brake system according to  claim 17 , characterized in that the retaining member ( 200 ) comprises at least one clamp ( 893 ) which urges the carrier ( 86 ) or the switching element ( 85 ) against the travel limiting element ( 82 ). 
     
     
       20. A vehicle brake system according to  claim 19 , characterized in that the clamp ( 893 ) is designed as a spring clamp which resiliently clamps the carrier ( 86 ) or the switching element ( 85 ) against the travel limiting element ( 82 ). 
     
     
       21. A vehicle brake system according to  claim 17 , characterized in that at least one retaining member ( 200 ) is arranged in the area of the switching element ( 85 ). 
     
     
       22. A vehicle brake system according to  claim 17 , characterized in that the at least one retaining member ( 200 ) is arranged in the area of the end of the travel limiting element arranged in the area of the end of the travel limiting element ( 82 ) remote from the actuation member ( 70 ,  80 ). 
     
     
       23. A vehicle brake system according to  claim 22 , characterized in that that the at least one retaining member ( 200 ) engages a recess in the travel limiting element ( 82 ).