DE1902895A1 - Arrangement of a foot lever for motor vehicles, in particular the clutch lever for passenger cars - Google Patents

Description

Arrangement of a pedal for motor vehicles, in particular the clutch lever for passenger cars The invention relates to an arrangement of a foot lever for motor vehicles, in particular the clutch lever for passenger cars, with the actuation of the foot lever in the first part of the actuation stroke against the force a return spring takes place, while after a certain stroke a torque direction chsel takes place, whereby on the foot lever a supporting the actuation of the same Moment acts.

To achieve such an effect, there are already the most diverse Arrangements of foot pedal, return spring, additional links on which the return spring attacks, etc. known. All of these devices that one easy contain acting over-center spring, are in their mode of action due to the Constructive structure relatively narrowly limited. This particularly affects the constantly increasing performance and torque of modern internal combustion engines from, through which also the clutch pressure and thus the clutch pedal forces solid rising.

Because the release travel in the clutch actuation and thus the transmission ratio the clutch can hardly be enlarged, you had to use increased clutch pedal forces accept, as with the well-known, single-acting dead center springs only a limited restoring torque can be achieved. To reduce the increased Pedal forces on the clutch pedal, it is only known, the pedal forces hydraulic or to reduce it by servo action. Such measures are very expensive and expensive.

In contrast, the invention is based on the object, e.g. Internal combustion engines with high power and high torque occurring large Forces on the clutch pedal with simple and cheap means by mechanical means to reduce.

To solve this problem it is proposed that the return spring on the one hand on the foot lever and on the other hand on a stationary, rotatably mounted Gear lever engages, indirectly or directly via an intermediate link is connected to the foot pedal.

The advantages of the invention can be seen in the fact that, due to of the structural design, the return spring can be swiveled out in the same direction as the foot lever a more effective pedal force reduction than is simply the case with the previously known ones acting over-center springs was the case, was achieved. When swiveling out the The transmission lever and thus the return spring becomes the point of application of the return spring also swiveled forward; thus there is an increase in the effective Lever arm for the force application of the return spring, whereby the return spring torque exercises, which increases with increasing pedal travel up to a certain order of magnitude strengthen.

The inventive articulation of the return spring can thus in Depending on the structural definition of the various articulation points any increase in the restoring torque of the return spring can be achieved. In order to can also, in contrast to the known devices, the smallest possible pedal travel can be achieved.

Further details of the invention can be found in the description of the drawings below refer to.

In the drawing the invention is based on an exemplary embodiment Figures 1 and 2 are shown and shown in FIG one part each of a foot lever with its storage in different views.

The foot lever 1, e.g. a clutch lever, is mounted on the foot lever bracket 2 pivoted. At the foot lever 1 engages a return spring 3, the other The end of a transmission lever mounted on a stationary body part 13 4 is hinged. The transmission lever 4 in turn stands via an intermediate member 5 with the foot lever 1 in connection. The intermediate member 5 engages the transmission lever 4 in the area between its mounting 6 and the articulation point 7 of the return spring 3, while the connection of the intermediate member 5 with the foot lever 1 via a arranged on foot lever 1, bearing block moving in the same direction as the foot lever 8 takes place.

Of course, the intermediate member, if this is the constructive Design of the foot lever and its storage allows, even directly, without interposition a bearing rock or a bearing lever o. The like. Be connected to the foot lever.

The starting position I of the foot lever 1 is chosen so that the line of action 9 of the return spring 3 seen in the actuating direction 10, shortly before the dead center position 11 lies.

The foot lever 1 is pressed into the starting position I as a result. At the Pivoting the foot lever in the direction 10 'is also the transmission lever 4 via the Intermediate member 5 pivoted in direction 10. The return spring 1 is in the same direction with the foot lever 1 over the dead center position 11 over the pivot point 12 of the foot lever 1 or the pivot point 6 of the transmission lever 4 is pivoted out.

After the dead center position 11 has been exceeded, the return spring 3 exerts itself the transmission lever 4 and the intermediate member 5 on the foot lever 1 an actuation same supportive Moment off. This moment magnifies with increasing path 10 'or lo up to a preselected order of magnitude, which depends on the structural design of the entire device. Since the Force effect of the return spring 3 is always to be selected smaller than the back pressure force the clutch springs, the foot lever 1 is always back from the end position II brought back to the starting position I via the dead center position 11.

Claims (3)

Patent claims: 1. Arrangement of a pedal for motor vehicles, in particular the Clutch lever for passenger cars, with the operation of the foot lever in the first Part of the actuation stroke takes place against the force of a return spring while after a change in torque direction takes place at a certain stroke, causing the Foot lever acts as a result of the actuation of the same supporting moment characterized in that the return spring (3) on the one hand on the foot lever (1) and on the other hand engages on a rotatably mounted transmission lever (4) which via an intermediate member (5) is directly or indirectly connected to the foot lever. 2. Arrangement according to claim 1, characterized in that the transmission lever (4) is rotatably mounted on a stationary body part (13) and the return spring (3) attacks on the free end of the translation lever. 3. Arrangement according to claims 1 and 2, characterized in that that the intermediate member (5) on the transmission lever (4) in the area between its storage (6) and the articulation point (7) of the return spring (3) engages while the connection of the intermediate link with the foot lever (1) via one arranged on the foot lever in the same direction with the foot lever moving bearing block (8), bearing lever or the like. he follows.