Measuring and testing – Brake testing – Brake depressor with measuring means
Patent
1991-08-02
1992-12-22
Myracle, Jerry W.
Measuring and testing
Brake testing
Brake depressor with measuring means
901 50, G01M 1900
Patent
active
051725894
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention relates to a robot driver for a motor vehicle which has a central casing to be mounted in the passenger compartment and actuation elements for accelerator pedal, brake/or clutch as well as gear lever.
It is known that the functional monitoring of motor vehicles, in particular also the monitoring of exhaust gas values can take place on roller dynamometers with the aid of robot drivers which, in comparison with a human driver, ensure the advantage of an exactly controllable program execution and a relatively small spread of the measured values. Numerous embodiments of robot drivers of this kind are therefore in use.
It is known to mount the central casing on which the actuation elements for accelerator pedal, brake, if appropriate clutch, as well as gear lever on the anchoring fixture of the driver's seat after the driver's seat is removed. The assembly cost connected with this is considerable so that an embodiment of this kind did not gain acceptance.
By means of a previously used driving robot which was manufactured by the Applicant and operated by WECO Industrietechnik GmbH and documented in a brochure of this company under the title "WECO Industrietechnik--WECO driver robot", it is known to mount the central casing of the robot driver on the driver's seat by the casing being supported on the one hand on the back rest and on the seating surface of the passenger seat and, on the other hand, engaging with holding plates over the outer edges of the seat upholstery. This method of mounting has been well tried per se, but with the increasing application of technology to seats it comes up against difficulties because the sides of the seat surfaces ar covered with operating and/or control elements so that the mounting of holding plates is no longer possible--at least not readily possible.
In EP 0 235 333 B1 a robot driver is described, the central casing of which is supported in the foot space of the driver's seat engaging below the seat on the floor of the passenger compartment and is mounted at its top with an adjustable linkage on the steering wheel by making a connection at the lower apex of the steering wheel which permits the steering wheel to rotate. For this purpose a platform is mounted on the steering wheel, which platform has grooves running in the circumferential direction and open towards the bottom, in which grooves guide elements of the linkage emerging from the casing can engage in order to permit the casing to be fixed relative to the steering wheel. This arrangement has considerable disadvantages. These consist in particular in the fact that a secure support with a large support surface on the floor of the passenger compartment with the driver's seat still present is usually not possible and that the steering wheel rim is loaded with reaction forces which can reach the limits of the loadability of the steering wheel rim. Depending on the stability of the steering wheel rim, it can deform to a greater or lesser extent and thus unreliability during the positioning of the robot driver and thus inaccuracy when actuating the pedals and levers of the motor vehicle can result.
The object of the present invention is based on the problem of achieving a mount for a robot driver in a motor vehicle which does not require removal of the driver's seat, does not create stability problems and does not depend on the material of the steering wheel rim.
Starting from this definition of a problem, a driver robot according to the invention having the features mentioned at the beginning has the further features that the casing is supported on the seating surface and back surface of the driver's seat and is connected to a rod which is held on the steering wheel frame mounted on the steering wheel and is flush with the steering axle.
In accordance with EP 0 235 333, the driver robot is supported on the steering wheel of the motor vehicle. The central casing of the driver robot is however not arranged in the foot space but rather on the driver's seat so that the mounting of the driver robot a
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