DE6803089U - Pedal crank for bicycles or similar - Google Patents

Description

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Leopold Rueß, 8918 Dießen. Neudießen No. 9

Pedal crank for bicycles or the like.

The innovation relates to a crank for .. ■ ·; ■ "'· Bicycles or the like. With a joint located in the area of the pedal, the pivot axis of which is at right angles to the crank arm, as well as at right angles to the pedal axis, with the joint in an extended position has effective locking.

Such cranks with a joint for folding down the pedal are known. However, the locking devices for locking the joint are complicated trained and not sufficiently reliable for the rough operation in the pedal area of a bicycle.

The task of the innovation is to create a pedal crank whose joint, which is used to fold down the pedal, in particular its locking, robust in structure and easy to use.

This object is achieved according to the invention in that one part of the crank arm in the area of the joint

the other part of it embraces as a fork and that |

parallel to the pivot axis aine in the extended position of the ' Aligned joint, both fork arms, as well as the between

P. C.

part of these located crank arm / penetrating hole is provided in the longitudinally displaceable one in his Length of three-part pin is arranged, the middle part of the length of the clear distance between the Fork arms corresponds to »

The three-part pen leaves, if its middle part in which the crank arm part protruding between the digging arms is in alignment with the latter, a pivot of the joint. The two outer parts of the pin are located in the two fork arms. Will but the pin in the operating position of the joint in.. <. shifted its longitudinal direction, one end part of the pin protrudes into the pedal crank arm located between the fork arms and the middle part of the pin protrudes into one fork arm so that the joint is securely locked in this position.

The pen can work together with bastions, which it hold in both of its operating positions and prevent unintentional movement of the pen « For this purpose, z. B. the middle part of the pen two Have depressions in the circumferential direction, which with a standard, resilient notch in which the pen co-operate containing crank arm part.

To prevent the two outer pin parts from falling out to prevent this duroh one at your free Ends attacking bridge connected to be. That from the both outer pin parts and the bridge existing,

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Slidable part can have a friction lock for more convenient handling, which prevents the unintentional shifting of this Tefl.es. For this can 2 «B. the bridge is designed to be springy» in and under Pre-tension on the crank arm.

In the drawing, an example of the hiring is shown. .

Here shows: Fig. 1 is a section in the longitudinal direction of the joint

on a pedal crank arm, FIG. 2 shows a pedal crank arm with a pedal, the Pedrl is swiveled away and

3 shows the crank arm according to FIG. 2 with the pedal. in operating position,

1 shows the pedal crank arm 1, the pedal crank arm part 2 of which protrudes between the fork arms 3 and 4 of the pedal crank arm part designed as a fork 5. The fork 5 can be pivoted relative to the bolt 7, which also penetrates the pedal arm part 2. The pedal axis 6 is screwed into the fork 5 in the usual way. The three-part pin 9 also penetrates both fork arms 3 and 4, as well as the pedal arm part 2. The outer parts θ and 11 of the three-part pin 9 are located in the fork arms 3 and 4, while the central part 10 of the pin is arranged in the pedal arm part 2. The length of the middle part 10 corresponds to the width of the pedal crank arm part 2. The catch 12 holds

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the pin 9 in its "two operating positions. In The joint is locked in the position shown. The outer parts 8 and 11 of the pin 9 are through a Bridge 13 connected so that they cannot fall out of the fork arms 3 and 4.

Pig. 2 shows the pedal crank arm 1 in a side view, the fork 5 pivoting towards the pedal crank arm part 1 is such that the pedal 14 runs parallel to the pedal arm part 1.

Pig. 3 shows the same crank arm as Pig. 2, but with the pedal 14 pivoted into the operating position.

- Protection claims -

Claims (1)

I I! -Γ ·! "· Sc hut ζ a η s ρ r ti c h β Pedal crank for bicycles or the like. With a joint located in the area of the pedal, the pivot axis of which runs at right angles to the crank arm and at right angles to the pedal axis, the joint having an effective locking mechanism in the extended position, characterized in that one part of the crank arm in the area of the joint (1) the other part of the same as a fork (5) engages around and both fork arms (3,4), and the Tretkurbelarmteil located between these (2) penetrating hole provided in parallel to the pivot axis a flush in the extended position of the joint, in the longitudinally displaceably a three-part pin (9) is arranged in its length, the middle part (10) of which corresponds in length to the clear distance between the fork arms (3 »4). Pedal crank according to claim 1, characterized in that that the part of the crank arm (1) protruding into the fork (5), in which the middle part (TO) of the three-part pin (9) is located, has a resilient detent (12) which locks the central part (10) in two positions, such that in one position the middle part (10) with the pedal arm part (2) iluclrcet. 3. Pedal crank according to claim 2, characterized in that that c e free ends of the two outer parts (8, 11) of the pin (9) with a rigid, outside around the Joint extending bridge (13) are connected. 4. Pedal crank according to claim 3, characterized in that the bridge (13) opposite the fork arms (3, 4) displaceable while overcoming a frictional force October 17, 1968/333 68030