DE102018008093A1 - Device for efficiently locking the inclination of a multi-track bicycle - Google Patents

Abstract

A device for locking the inclination of a bicycle with at least one multi-lane axle is disclosed, which has at least one axle body (2). An introductory coupling stump (7), which is movable in the longitudinal axis of the bicycle, is fastened to a coupling block (3), which is connected to a frame front part (1), in a receiving coupling counterpart (4), the opening of which is also in the longitudinal axis of the coupling stump (7 ) and which is connected to the axle body (2), received in a form-fitting manner. In further embodiments, the coupling process and the coupling structure are carried out further.

Description

Multi-lane bicycles that can tilt when cornering offer greater driving dynamics and better road contact at higher speeds. Tilting the undercarriage is neither necessary nor desirable when pushing, starting and stopping, as it makes handling more difficult. The tilting technology must be locked for these driving situations.

If a multi-lane bicycle can be tilted when cornering, it has better cornering dynamics and a significantly higher cornering speed compared to conventionally equipped rigid axles with comparable curve radii before the wheel tips out of the curve. Tilting the cargo bike in bends improves the contact of both wheels with the ground, which further reduces the risk of tipping and increases driving safety. Multi-lane bicycles with tilting technology combine the high payload capacity of multi-lane cargo bikes with the very good driving dynamics and high speeds of the single-lane. Like single-track cargo bikes, multi-track bikes with tilting technology also need a device that ensures a safe stand. In the assisted, partially automated handling of cargo from logistic systems onto the cargo bike, a defined and play-free alignment of the loading area by means of a lock is necessary. Blocking the tilting technology at low driving speeds and when pushing assists the user in checking the bicycle if the gyroscopic forces of the running wheels cannot generate sufficiently high lifting forces at low driving speeds. There is also no need to use a stand. Such devices for locking the tilt mechanism can have different designs.

Prior art solutions use damper spring elements ( DE202013004630U1 ) and spring elements ( DE202014010970U1 ) to raise the tilting gear. According to the current state of the art, non-positive locks can be found by baking ( DE202007017419U1 ) or through a bolt that penetrates a pocket transversely to the bicycle axis ( EP686112B1 ) Use. The disadvantage of damper / spring elements is that the inclinability is not completely prevented during slow driving. If sufficient force is applied, the undesirable tendency continues to occur. This increases when the springs are already worn out. Spring damper systems that can be reliably and without play are currently not available.

The disadvantages of the non-positive solution are wear and tear of the locking device, the associated loss of locking and security, and similar to the damper spring locking, no non-positive connection and thus the possibility that the locking can be released. Disadvantages exist in the case of a bolt penetrating a pocket transversely to the bicycle axis in the structure of the device, which is very complex compared to the result and takes up a large amount of space. The invention specified in claim 1 is based on the problem of finding an inclination lock that can easily and effectively interrupt an inclination and effectively interrupts it.

This problem is solved by the features listed in claim 1, according to which when locking to a bicycle with at least one multi-lane axle and an axle body holding this, an introductory coupling element (coupling stub) movable in the longitudinal axis of the bicycle is attached to a coupling block which is connected to the frame in a receiving coupling element (coupling counterpart), the opening of which also lies in the longitudinal axis of the coupling stump and which is located on the axle body, is received in a form-fitting manner.

The horizontal alignment of the loading area is necessary for an assisted, partially automated handling of standard containers at the incoming / outgoing goods in automated storage systems. The locking takes place via a form-fitting coupling between the axle beam and the front frame, by means of a coupling stub in a coupling counterpart. The advantage of a positive connection compared to electromagnetic and hydraulic locking devices is the low energy requirement and the excellent functionality and reliability.

In an advantageous embodiment, the coupling stump and the coupling counterpart have several, preferably at least four opposing mating surfaces. This enables a higher torque and a rotation fixation.

In a further advantageous embodiment, the coupling stump is designed as a multi-sided truncated pyramid. In this version, the coupling counterpart becomes narrower towards the inside. Both have an end surface (stump and bottom surface). A taper angle between 1 ° and 40 ° is advantageous. This configuration has the advantage that the wide areas are better suited for torque generation than the tip. In addition, the coupling can be carried out more easily with a tapered coupling stump / coupling counterpart. The conical design of the connection enables both to be self-centered Coupling pieces and thus an erection of the main frame even from larger tilt angles.

In a further advantageous embodiment, there is a movable connection between the axle body and the frame. This makes inclination possible. In addition, a coupling outside the axis of the coupling stub and coupling counterpart is conceivable.

The front axle can have a parallelogram design. In this advantageous case, the coupling counterpart is attached either to the front or to the rear axle body. The coupling stump is still on the frame, the orientation depending on the attachment of the coupling counterpart.

In a further advantageous embodiment, the coupling stub is moved by a spindle drive. The ergonomic drive can be installed on the coupling axis and requires little installation space. In addition, the coupling stump can be moved precisely. The coupling connection is axially secured via the self-locking of the trapezoidal threaded spindle and the steep flank angles of the coupling stump.

In a further advantageous embodiment, the rotary movement of the spindle is generated via a cable pull system or an electric servo motor. In combination with these devices, simple control of the coupling process is possible. Either the coupling is carried out by means of the cable system and a Bowden cable, for example from the handlebar, or the coupling process is carried out electrically and controlled by a switch from, for example, the handlebar.

• 1 zeigt die Arretierung in einem Fahrrad mit einem Achskörper in schräg-frontaler Perspektive ohne Kupplung.
• 2 zeigt die Arretierung in einem Fahrrad mit einem Achskörper in schräg-frontaler Perspektive mit Kupplung, die schematisch angedeutet ist.
• 3 zeigt eine schematische Nahaufnahme der Kupplungseinrichtung in seitlichem Blickwinkel an einem Fahrrad wie in 1 und 2 ohne Kupplung.
• 4 zeigt eine schematische Nahaufnahme der Kupplungseinrichtung von seitlichem Blickwinkel an einem Fahrrad wie in 1 und 2 mit Kupplung.
• 5 zeigt den Kupplungsstumpf in einer Draufsicht.
• 6 zeigt das Kupplungsgegenstück an dem Achskörper befestigt in einer Draufsicht.

An embodiment of the invention is shown in the drawing and is described in more detail below.

• 1 shows the locking in a bicycle with an axle body in an oblique-frontal perspective without clutch.
• 2nd shows the locking in a bicycle with an axle body in an oblique-frontal perspective with clutch, which is indicated schematically.
• 3rd shows a schematic close-up of the coupling device from a side perspective on a bicycle as in 1 and 2nd without clutch.
• 4th shows a schematic close-up of the coupling device from a side perspective on a bicycle as in 1 and 2nd with clutch.
• 5 shows the coupling stump in a plan view.
• 6 shows the coupling counterpart attached to the axle body in a plan view.

The device is located on a bicycle with a two-lane front axle, which is supported by an axle beam ( 2nd ) is formed. The inclination is made possible by a rotatable connection between the axle beam and the front part of the frame.

The locking mechanism is on the axle beam ( 2nd ) attached to the front axle of the multi-track bicycle so that the clutch block ( 3rd ) with the coupling stump on it can be moved parallel to the longitudinal axis of the vehicle ( ). The axis of symmetry of the coupling counterpart ( 4th ) is with the axis of rotation of the axle beam ( 2nd ) identical.

The clutch is opened and closed by moving the clutch block linearly ( 3rd ) realized on suitable sliding elements with little friction and no play. The form-fitting connection is designed as a truncated pyramid with a polygonal base for the axial and correct angular positioning of the coupling stump and coupling counterpart ( 5 ).

The linear displacement of the coupling block ( 3rd ) necessary force is generated by the rotation of a spindle ( 5 ) in the coupling block ( 3rd ) initiated. The spindle ( 5 ) via deep groove ball bearings directly on the drive in the front of the frame ( 1 ) and in the coupling block ( 3rd ) stored ( 3rd ). The spindle is driven ( 5 ) by a cable pull mechanism or electric drive.

The coupling is closed completely and without play if the mating surfaces of the coupling stump ( 7 ) and coupling counterpart ( 4th ) lie flat on all sides ( 4th ). The positive fit of the mating surfaces then enables the torque to be transmitted from the frame to the axle beam ( 2nd ). The reliable locking of the connection is ensured by the self-locking of the trapezoidal threaded spindle and requires no further device.

The in the 1 to 6 The construction shown represents an example of a mechanism that is used to lock a pivotable arm (axle body ( 2nd ) or cross member) around its axis of rotation. Accordingly, detents according to the present document can have different geometries, component arrangements and controls without departing from the scope of protection of the present document. For example, the spindle can be controlled via cable pull mechanisms, servo motors or other devices.

Reference symbol list

1.

Frame front part

2nd

Axle beam

3rd

Clutch block

4th

Coupling counterpart

5.

spindle

6.

Mating surfaces

7.

Coupling stump

8th.

Blunt surface

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202013004630 U1 [0003]
• DE 202014010970 U1 [0003]
• DE 202007017419 U1 [0003]
• EP 686112 B1 [0003]

Claims (7)

Device for locking the inclination of a bicycle with at least one multi-track axle with at least one axle body (2), characterized in that a coupling stump (7) movable in the longitudinal axis of the bicycle is attached to a coupling block (3) which is connected to a frame front part ( 1) is received in a receiving coupling counterpart (4), the opening of which also lies in the longitudinal axis of the coupling stump (7) and which is connected to the axle body (2). Device after Claim 1 characterized in that the coupling stump (7) and the coupling counterpart (4) have several, preferably at least four opposing fitting surfaces (6). Device after Claim 2 , characterized in that the coupling stump (7) is designed as a multi-sided truncated pyramid with a stump surface (8), the coupling counterpart (4) narrows inwards and has a bottom surface (9). Device according to one of the preceding claims, characterized in that there is a movable connection between the axle body (2) and the frame front part (1). Device according to one of the preceding claims, characterized in that the front axle is designed as a parallelogram and the coupling counterpart (4) is attached to one of the axle bodies. Device according to one of the preceding claims, characterized in that the coupling stump is moved by a drive by means of a spindle (5). Device after Claim 6 , characterized in that the rotary movement of the spindle (5) is generated via a cable system or an electric servo motor.

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