DE102019000948B4 - Lifting device for raising and lowering electric bicycles on the roof rack of motor vehicles - Google Patents

Abstract

Lifting device for electric bicycles, with a telescopic support arm (1) which is arranged pivotably on a motor vehicle roof and is supported by gas pressure spring force, for lifting an electric bicycle onto a wheel mount (15) on the motor vehicle roof and for lowering the electric bicycle next to the motor vehicle, the electric bicycle being used by a gas pressure spring ( 17) held over the wheel mounts (15) and can be lowered by pulling on these wheel mounts (15), characterized in that the telescopic support arm (1) is L-shaped and pivoted on an axle, locking and guide disk (4). the axle, locking and guide disc (4) has locking bores (5) for fixing the telescopic gantry (1) in the lowered and raised state and that two gas pressure springs (2) on the one hand on the axle, locking and guide disc (4) are articulated in front of the axis of rotation (3) of the telescopic arm (1) and on the other hand on the telescopic arm (1) that the Gasdr springs (2) are dimensioned and attached in such a way that they do not collide with the frame parts of the electric bicycle and still transmit sufficient lifting force to the telescopic support arm (1) and that a telescope (16) is slidably arranged in the telescopic support arm (1) and by means of the telescopic support arm ( 1) the internally arranged gas pressure spring (17) is connected to the telescopic support arm (1) and thus allows the electric bicycle to be lowered onto the wheel mount (15) with a slight pull and that a clamping support tube (13) with right-hand and left-hand thread with two clamping hooks (20) , which are placed around the steering column and seat post, is provided, which develops such a strong clamping force by turning that electric bicycles of different types can be lifted on it.

Description

The invention relates to a lifting device according to the preamble of patent claim 1.

A number of different lifting and fastening systems are already known in the prior art. Although previous loading aids make it possible to lift normal bicycles, they are too weak to conveniently lift electric bicycles onto motor vehicle roofs.
Furthermore, the attachment devices on the lifting devices for modern bicycles with their many attachments and sloping frame bars are problematic to attach.

With the known lifting devices DE 41 22 823 A1 and DE 35 13 085 A1 the initial lifting force is designed too low by the bottom dead center solution and at DE 41 22 823 A1 and DE 35 13 085 A1 with this attachment, very strong torsional forces act on the attachment points on the roof racks.
Furthermore, a fork that reaches over or under the steering wheel and saddle to accommodate an electric bicycle can no longer be attached to the add-on parts that are customary today.
With the known lifting device DE 35 13 085 A1 Due to the torsion spring principle, there may be a risk of injury from the unloaded carrier shooting up in an uncontrolled manner.
With the known lifting devices DE 693 12 826 T2 and the electric bike has to be lifted up to the height of the roof of the vehicle, which would only be possible with a great deal of effort given the weight of an electric bike.
From the DE 196 21 409 A1 is a lifting device for raising and lowering bicycles on the roof rack of motor vehicles, wherein a telescopic support arm with a gas pressure spring, which is fixed in front of the axis of rotation of the telescopic support arm, is pivotably attached to a bracket and the gas pressure spring is dimensioned and attached so that it does not interfere with the Frame parts of the bicycle collide and still transmits enough lifting power to the telescopic arm and when the loading height is reached the bicycle is held up by an appropriately dimensioned gas pressure spring, but can then be lowered by pulling on the wheel mounts.
The object of the invention is to realize a lifting and transport device in such a way that the disadvantages inherent in the prior art are eliminated and z. B. Heavy electric bicycles, with their different designs, can be easily and quickly attached to the lifting device and easily lifted onto the roof rack of vehicles, lowered again and removed.

Furthermore, the device should be simple and economical to manufacture.

According to the invention, this object is achieved by the features specified in patent claim 1 .

Advantageous embodiments are specified in the dependent claims.
The lifting device characterized by the invention uses an L-shaped telescopic support arm, which is equipped with two appropriately designed gas pressure springs and thus makes it possible, despite the required length of the boom, to lift the load comfortably.
The gas pressure springs, which are linked on the one hand via an axis to the telescopic support arm, are arranged in such a way that on the other hand they are linked in front of the axis of rotation of the telescopic support arm and thus at a favorable angle for the development of force on an axis, locking and guide disk and at the same time are dimensioned in such a way that they do not interfere with frame parts of the Electric bikes collide.
A tensioning tube with right-hand and left-hand thread, which is tightened around the steering column and seat post, or a tensioning belt pulled through the tensioning tube, which can also be tightened around the steering wheel and saddle of any type, solves the problem of a fastening option that is as universal as possible. The e-bike is placed in a holder with this clamping support tube and secured with a clamp.
During the lifting process, the weight that is easy to lift at the beginning becomes less and less. In the last third, the electric bike is in a state of limbo and only needs to be guided.
The telescope, with an internal gas pressure spring in the support arm, lowers the floating electric bike onto the wheel mounts, regardless of its frame height.
The wheel mounts, which are angled at one end and have firmly integrated lashing straps, make it possible to lash the electric bike in opposite directions and thus firmly and safely.
When the electric bike is unloaded, the entire telescopic support arm can be removed, stowed away and pushed in and loaded pretensioned for the next load.

• 1 eine Ansicht des Gegenstands der Erfindung mit einem Elektrofahrrad in Transportstellung auf dem Fahrzeugdach eines Kraftfahrzeugs von der Seite des Kraftfahrzeugs gesehen;
• 2 eine Ansicht des Gegenstands der Erfindung von der Vorderseite des Kraftfahrzeugs gesehen in Seitenansicht;
• 3 Ausschnitt von 2;
• 4 eine Ansicht mit herabgesenkten Teleskoptragarm und eingespanntem Elektrofahrrad;
• 5 Ausschnitt von 4;
• 6 Draufsicht auf das Kraftfahrzeugdach mit H-Träger;
• 7 Seitenansicht der Achs- Rast- und Führungsscheibe;
• 8 Draufsicht Achs- Rast- und Führungsscheibe mit Federriegel

The present invention will now be described in detail with reference to the accompanying drawings. Show it:

• 1 a view of the subject of the invention seen with an electric bicycle in the transport position on the vehicle roof of a motor vehicle from the side of the motor vehicle;
• 2 a view of the subject of the invention seen from the front of the motor vehicle in side view;
• 3 excerpt from 2 ;
• 4 a view with lowered telescopic arm and clamped electric bike;
• 5 excerpt from 4 ;
• 6 Top view of the motor vehicle roof with H-beam;
• 7 Side view of the axle locking and guide disc;
• 8th Top view of axle locking and guide disc with spring latch

The telescopic stretcher (1) is designed in such a way that when it is lowered ( 4 ) can place the electric bicycle in the holder (12) by lifting it. The two-axle holder (12) makes it possible to compensate for structural differences between the electric bicycles ( 1 ).

The electric bicycle is placed in the receiving shell (12) with a clamping support tube (13) that has previously been stretched between the seat post and the steering column of the electric bicycle. The clamping support tube (13) is dimensioned so that it can be used for most bicycle frames.
The clamping support tube (13) can be tightened by turning it using a right-hand and left-hand thread so that it can be used to carry the electric bicycle. At the same time, it keeps the front wheel from making steering movements during the lifting process.

Due to the specified diameter, the clamping rod (13) can be secured quickly and easily with a clamping lock attached to the receiving shell (12).

When lowered ( 5 ) the telescopic support arm (1) on the axle locking and guide disc (4) is automatically engaged in the locking hole (5) with a spring latch (6). The compressed gas pressure springs (2) generate a high lifting force on the telescopic support (1) due to the favorable angle of attack. By placing a load, such as the electric bicycle in this case, the spring latch (6) is relieved because the telescopic support arm (1) is then pressed onto the stop (7) of the axle locking and guide disc (4). The spring latch can then be easily unlocked.

When lifting the e-bike with the telescopic support arm (1), the spring bar (6) is tilted back into the locking position by sliding past a metal bracket (14) and snaps into place as a transport lock when the e-bike has reached the top.
During the lifting process, the weight to be lifted continues to decrease until, in the last third, the electric bike is actually floating and only needs to be guided.
In good condition ( 2 ) the electric bike hovers a few centimeters above the wheel mounts (15) and can then be lowered slightly into the wheel mounts (15) by pulling down a telescope (16), which contains an internal gas pressure spring (17) and which initially holds the electric bike up will.
The compressive force of the internal gas pressure spring (17) is measured in such a way that it absorbs the weight of the electric bicycle.
The telescope (16) has roller bearings (18) at the upper and lower end of the slide-in section and thus slides easily into the various positions ( 2 ).

The wheel mounts (15) are angled at the front and at the rear end. A lashing strap (19) is firmly attached to each of these angled parts, with which the electric bicycle can be secured very firmly to the wheels by lashing in opposite directions ( 1 ).

If the electric bicycle is to be lifted again, it can be very easily raised over the wheel mounts (15) and lowered next to the motor vehicle with the support of the internal gas pressure spring (17).
When lowered next to the vehicle, the telescope (16) is fully extended by the pressure of the internal gas pressure spring (17) and the telescopic support arm (1) slides on the axle locking and guide disc (4) to the lower position, where the spring latch (6) engages again ( 4 ).

The electric bike can then be removed. The telescopic support arm (1) can now be pulled out of the H-beam (10) in the clamped state. The telescopic support arm (1) can then be stowed in the vehicle or in the garage, for example, and pushed back into the H-beam (10) pre-tensioned for the next use.

In the 3 and 7 The axle locking and guide washer (4) shown serves the purpose of ensuring the guidance and axle mount of the telescopic support arm (1). Furthermore, the axle locking and guide disc (4) contains bores (5) for the spring bolt (6) to slide past it, a stop (7) for relieving the spring bolt (6) and an insertion device (8) for the H-beam (10 ) 6 .

The telescopic support arm (1), which is connected to the slide-in device (4) via the axle, locking and guide disk, is inserted into the slide-in opening (9). of the adjustable H-beam (10) on the roof rack (11) of the vehicle ( 6 ) is attached.

Reference List

(1)

telescopic arm

(2)

strong gas spring

(3)

axis of rotation

(4)

Axle locking and guide disc

(5)

snap hole

(6)

spring latch

(7)

attack

(8th)

inset

(9)

insertion opening

(10)

H beam

(11)

roof rack

(12)

receiving tray

(13)

tension support tube

(14)

metal bracket

(15)

wheel mount

(16)

telescope

(17)

internal gas pressure spring

(18)

roller bearing

(19)

lashing strap

(20)

tension hook

Claims (7)

Lifting device for electric bicycles, with a telescopic support arm (1) which is arranged pivotably on a motor vehicle roof and is supported by gas pressure spring force, for lifting an electric bicycle onto a wheel mount (15) on the motor vehicle roof and for lowering the electric bicycle next to the motor vehicle, the electric bicycle being used by a gas pressure spring ( 17) held over the wheel mounts (15) and can be lowered by pulling on these wheel mounts (15), characterized in that the telescopic support arm (1) is L-shaped and pivoted on an axle, locking and guide disk (4). the axle, locking and guide disc (4) has locking bores (5) for fixing the telescopic gantry (1) in the lowered and raised state and that two gas pressure springs (2) on the one hand on the axle, locking and guide disc (4) before the axis of rotation (3) of the telescopic arm (1) and on the other hand on the telescopic arm (1) are articulated so that the gas compression springs (2) are dimensioned and attached in such a way that they do not collide with the frame parts of the electric bicycle and still transmit sufficient lifting force to the telescopic support arm (1) and that a telescope (16) is slidably arranged in the telescopic support arm (1) and by means of the telescopic support arm ( 1) the internally arranged gas pressure spring (17) is connected to the telescopic support arm (1) and thus allows the electric bicycle to be lowered onto the wheel mount (15) with a slight pull and that a clamping support tube (13) with right-hand and left-hand thread with two clamping hooks (20) , which are placed around the steering column and seat post, is provided, which develops such a strong clamping force by turning that electric bicycles of different types can be lifted on it. Lifting device with telescopic support arm (1). claim 1 , characterized in that the telescopic support arm (1) with an integrated spring latch (6) automatically engages in the upper and lower position in the latching bores (5) and, after unlocking, automatically through a push-in opening (9) on the outside of an H-beam ( 10) attached metal bracket (14) is switched back to snapping. Lifting device with a telescopic support arm (1) according to one of the preceding claims, characterized in that the telescope (16) with the gas pressure spring (17) fitted inside the telescopic support (1) and dimensioned accordingly initially holds the electric bicycle at the top and then with a slight pull on the electric bicycle the lowering is made possible by two roller bearings (18) mounted in the telescope (16), which slide in the telescopic support arm (1), into the wheel mounts (15) and when the electric bicycle is pulled down next to the motor vehicle, automatically extends again and restores the distance to the motor vehicle. Lifting device with telescopic support arm (1) according to one of the preceding claims, characterized in that - that the axle locking and guide disc (4) has a slot (8) firmly connected to it for the slot opening (9) in the H-beam (10 ) and thus the telescopic support arm (1) connected to it via the axis of rotation (3) can be pushed into the H-beam (10) and pulled out for temporary storage. Lifting device with telescopic support arm (1) according to one of the preceding claims, characterized in that - the H-beam (10), which has a receiving opening (9) on both sides for inserting a telescopic support arm (1) for two electric bicycles, transverse to the longitudinal axis of the vehicle has an adjustment (21), whereby different which motor vehicle widths are covered and the wheel mounts (15) can rest as far as possible on the outside of the vehicle. Lifting device according to one of the preceding claims, characterized in that - the wheel mount (8) is angled and dimensioned on the outer side in such a way that the integrated lashing straps (10) rotate the wheels of the electric bicycle in opposite directions and are therefore secure against acceleration and braking forces can be lashed down and the telescopic support arm (1) in the upper latching position keeps the e-bike stable in an upright position against centrifugal forces when cornering. Lifting device with a telescopic support arm (1) according to one of the preceding claims, characterized in that - the telescopic support arm (1) when the spring latch (6) is latched in the lowered position is then prestressed again for the next loading into the insertion opening (9) of the H-beam (10), which then absorbs and distributes the load, inserted and can be loaded immediately for lifting with the electric bike.

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