DE202020107383U1 - Cargo bike with transport box - Google Patents

Abstract

Crank-operated vehicle, in particular multi-track cargo bike, comprising a frame, a saddle, a pedal crank and a handlebar, the vehicle having a transport box, characterized in that the transport box can be attached to the vehicle in two different orientations.

Description

field of invention

The invention relates to a pedal-operated vehicle. The vehicle is designed in particular as a multi-track vehicle, such as a tricycle, which has two wheels on the front or rear axle.

Background of the Invention

There are vehicles operated by a pedal crank, which are designed in particular as cargo bikes for transporting goods, but also for transporting people, especially children.

Multi-track vehicles in particular are used to transport people or goods.

These are available with two wheels on the rear axle, with a transport surface in the area of the rear axle.

In such vehicles, the front wheel is arranged on a conventional bicycle fork, which is connected to a wishbone.

There are also multi-track cargo bikes, in particular with three or four wheels, which have tilting technology and where the transport surface is in the area of the two front wheels.

object of the invention

Compared to the prior art described at the outset, the invention is based on the object of further improving the functionality of a pedal-crank-operated vehicle, which is designed in particular as a multi-track cargo bike.

Summary of the Invention

The object of the invention is already achieved by a pedal-crank-operated vehicle according to one of the independent claims.

Preferred embodiments and developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.

The invention relates to a pedal-operated vehicle. This includes a frame, a saddle, a crank and a handlebar.

A vehicle operated by a pedal crank is also understood to mean vehicles with an auxiliary electric drive, ie in particular e-bikes and pedelecs.

The invention relates in particular to cargo bikes with two wheels on the front or rear axle.

In particular, the invention relates to a three-wheel cargo bike which has a single front wheel and in which there are two spaced-apart rear wheels on the rear axle.

The pedal crank can be arranged in particular on a central structure of the frame and can drive the rear wheels of the cargo bike via a traction mechanism, ie via a chain or a belt.

The vehicle has a transport box. The transport box is in particular shell-shaped and open at the top and is used to transport people, animals and/or luggage.

According to the invention, the transport box can be attached to the vehicle in two different orientations.

In particular, the transport box can be removed from the vehicle, rotated through 180° on a horizontal plane and then reconnected to the vehicle.

In this way, the vehicle can fulfill different functionalities depending on the intended use.

According to one embodiment of the invention, it is provided in particular that the transport box has two side walls, a rear wall and a front wall, the front wall being lower than the rear wall.

When transporting people, the rear wall is located at the rear in relation to the direction of travel and can thus form a backrest or support a seat that is in the transport box and better protect the person in the back seat from behind in the event of an accident.

The front wall can serve as a footrest, for example.

The front wall and rear wall can therefore, in relation to the horizontal plane, in particular not be aligned perpendicularly but transversely, in particular at an angle of between 10 and 45°, preferably between 15 and 25°, to the vertical.

If, on the other hand, the vehicle is to be used for the transport of goods or luggage, the transport box is rotated by 180° and the rear wall is now aligned to the front in relation to the direction of travel.

The front wall now forms a lower loading sill, which makes it easier to load luggage. The rear wall, which is now aligned to the front, holds the luggage back when the vehicle brakes and, if the transport box is mounted behind the driver, protects him from behind.

The transport box is arranged in particular on a carrier connected to the frame.

The carrier can be designed in particular as a lead frame.

This frame is connected to the rest of the bicycle frame and thus serves as a stable but lightweight mount for the transport box.

In particular, the lead frame can be made of tubes, for example made of metal or plastic tubes.

According to a preferred embodiment of the invention, the transport box is made of foam.

In particular, the transport box consists of a closed-cell foam. A particle foam, in particular an expanded polypropylene, is preferably used.

Such closed-cell particle foams are, on the one hand, stable and, on the other hand, have excellent energy absorption properties under mechanical loads.

In a preferred embodiment of the invention, the transport box is arranged between the wheels of a rear or front axle of the vehicle.

In this way, the available space can be used well. A floor of the transport box is preferably located close to the axis of the wheels, in particular at a distance of less than 15 cm.

In a development of the invention, the side walls of the transport box each include a recess for the adjacent wheel of the vehicle.

In particular, the side walls comprise a recess which is essentially in the shape of a segment of a circle on the outside.

The side walls are therefore thin in the area of the wheels. In particular, the wall thickness in the area of the side walls is less than 0.8, preferably less than 0.6 and particularly preferably less than 0.4 times the wall thickness of the area of the side wall adjoining the recess.

This makes it possible for the side walls to move further outwards in the direction of the wheels, which increases the maximum size of the transport box.

In the area of the wheels, a lower side wall thickness is not a disadvantage, since the remaining area of the transport box with a thicker wall provides sufficient structural rigidity for the transport box and because in the event of an accident, the transport box is additionally protected in this area by the wheels of the vehicle.

The side walls, the floor, the rear wall and the front wall of the transport box are preferably of planar design, at least on the inside.

The transport box is designed in particular as an open shell.

In the side view, the side walls can have a shape that rises from the front wall to the rear wall. In order to optimally protect a person, it is provided according to one embodiment of the invention that the side walls, starting from the front wall, initially rise, in particular rise in a straight line. Then follows a step from which the side wall rises less steeply or not at all. The head of a passenger, in particular a child, can thus be protected in the raised rear area between the side walls.

The vehicle preferably includes a receptacle for a seat, in particular for a child seat.

Depending on the design, the receptacle can be located on the transport box itself. For example, the transport box can have quick-release fasteners for a child seat.

In another embodiment, the transport box includes at least one, preferably at least two, openings on the floor as a receptacle, via which a child seat can be connected either directly to the carrier of the transport box or within the opening there is a receptacle for the child seat is located, which can be connected to the carrier on the one hand and allows the child seat to be attached on the other.

In a preferred embodiment of the invention, the transport box comprises form-fitting elements which engage in the carrier from above and/or enclose the carrier at least in sections.

The positive-locking elements can in particular be projections of the walls of the transport box that protrude beyond the floor.

These can positively connect the transport box to the carrier, particularly in the horizontal plane, in at least one spatial direction, preferably in both spatial directions.

Furthermore, there is preferably a lock, in particular a quick-release fastener, which secures the transport box in the third spatial direction, namely the vertical spatial direction.

In a preferred embodiment of the invention, the transport box is designed as a one-piece molded part. In particular, the transport box is formed from a single closed-cell foam part.

Such moldings can be produced, for example, as particle foam by filling a mold that forms the negative image of the transport box with foam particles, in particular foam balls, and then connecting the foam particles to one another by heating, in particular using steam.

Another aspect of the invention relates to a pedal crank operated vehicle.

The pedal-crank-operated vehicle can in particular include all the features described above individually or in combination.

The vehicle includes a frame, a saddle, a crank and a handlebar.

The vehicle also includes a transport box.

According to the invention, the transport box comprises side walls, each with a mudguard.

According to the invention it is therefore provided that the transport box can be used to attach the mudguards. This enables a particularly simple configuration and weight-saving integration of the mudguards into the vehicle.

According to one embodiment of the invention, the wheel estimators are removable. For this purpose, the transport box can include receptacles, in particular recesses, into which the mudguards are inserted. In this embodiment of the invention, the mudguards can be designed in particular as plastic injection molded parts.

According to another embodiment of the invention, the mudguards are an integral part of a transport box designed as a molded part.

In this embodiment of the invention, the mudguards can be molded from a closed-pore particle foam in a single step during manufacture of the transport box, for example when producing a molded part.

The mudguards are so light and require almost no manufacturing effort, only the mold for manufacturing the transport box has to be filled with a little more material.

In a further development of the invention, the mudguards are designed in such a way that they partially cover the adjacent wheel at the front. In particular, the mudguards cover the wheel to about the bottom of the transport box.

Improved protection of the driver or the luggage from water and dirt can be achieved via this embodiment of the invention.

In a preferred embodiment of the invention, a center of the mudguards is located in the middle with respect to the bottom of the transport box (in relation to the direction of travel).

The center of the mudguards is understood to mean in particular their center in relation to the direction of travel.

In relation to the direction of travel, the mudguards are located exactly in the middle of the transport box, so that the transport box can be rotated by 180° and placed on the carrier in the same position, and the mudguards are essentially in the same place as in the other position of the transport box.

The invention also relates to a transport box which is designed for the vehicle described above. In particular, the transport box can include all of the features described in connection with the transport box.

In particular, the transport box can have mudguards and/or at least one child seat.

character list

• 1 bis 7 sind jeweils eine isometrische Ansicht eines Ausführungsbeispiels eines erfindungsgemäßen Fahrzeugs.
• 8 ist eine Detailansicht des Fahrzeugs im Bereich der Transportbox bei einer Ausführungsform der Erfindung, bei welcher das Fahrzeug einen abnehmbaren Radschützer aufweist.
• 9 ist eine perspektivische Ansicht einer Transportbox bei einem Ausführungsbeispiel, bei welcher die Transportbox einen integrierten Radschützer aufweist.
• 10 ist eine weitere perspektivische Ansicht der Transportbox.
• 11 ist eine Detailansicht des Fahrzeugs im Bereich der Transportbox von unten.
• 12 ist eine Ansicht eines Fahrzeugs von hinten.
• 13 ist eine Detailansicht auf das Fahrzeug im Bereich der Transportbox von oben.
• 14 ist eine Seitenansicht eines Ausführungsbeispiels einer Transportbox.
• 15 ist ein Querschnitt der Transportbox im Bereich der Ausnehmungen für die Räder des Fahrzeugs.

The subject of the invention shall be explained in the following with reference to the drawings 1 until 15 be explained in more detail.

• 1 until 7 are each an isometric view of an embodiment of a vehicle according to the invention.
• 8th is a detailed view of the vehicle in the area of the transport box in an embodiment of the invention, in which the vehicle has a removable wheel guard.
• 9 12 is a perspective view of a shipping box in one embodiment in which the shipping box has an integrated mudguard.
• 10 Figure 12 is another perspective view of the transport box.
• 11 is a detailed view of the vehicle in the area of the transport box from below.
• 12 12 is a rear view of a vehicle.
• 13 is a detailed view of the vehicle in the area of the transport box from above.
• 14 Figure 12 is a side view of one embodiment of a shipping box.
• 15 is a cross-section of the transport box in the area of the recesses for the wheels of the vehicle.

Detailed description of the drawings

1 shows a perspective view of an embodiment of a vehicle according to the invention, which is designed as a multi-track cargo bike 1.

The cargo bike 1 includes a frame 2, which includes a pedal crank 3 (crank and pedals not shown) in the area of the central structure.

The saddle (not shown) can be mounted on the cargo bike 1 on a seat tube 9 by means of a seat post.

The frame 2 of the cargo bike is designed in the front area as a classic bicycle frame and includes a handlebar 4, which is designed as a handlebar and via which the front wheel 5 can be moved by means of a front wheel fork.

Details of the drive, via which the two rear wheels 6 are driven, are not shown.

Between the two rear wheels 6 there is a transport box 20, which is preferably designed as a molded part made of expanded polypropylene.

The transport box comprises the floor 20, which is flat, the front wall 22, the rear wall 23 and the two side walls 24.

The front wall 22 is lower than the rear wall 23.

The upper wall edge 25 of the side walls 24 runs, starting from the front wall 22, initially upwards to the edge 26, and then falls in the direction of the rear wall 23 again.

The transport box 20 is therefore highest in the area of the edge 26, which is preferably rounded.

In this representation, the front wall 22 is at the front in relation to the direction of travel.

In the rear area of the transport box 20, a child seat 10 is used, which is used in this embodiment to transport up to two children.

The child seat 10 includes a preferably upholstered seat 11 and a backrest 12 which is supported on the rear wall 23 .

The backrest 12 is higher than the rear wall 23 and, in this exemplary embodiment, also higher than the side walls 24. The backrest preferably also comprises an energy-absorbing material, such as a closed-pore particle foam.

The edges 26, in which area the transport box 20 is highest, are located approximately next to the heads of the children (not shown).

Furthermore, the side walls 24 each have a mudguard 29 on their outer side, which extends around a rear wheel 6 as a segment of a circle.

In this exemplary embodiment, the mudguard 29, which points approximately to the bottom 21 of the transport box 20, is closed at the front with a wall 30.

2 shows the cargo bike 1, the child seat now being removed.

On the bottom 21 of the transport box 20, receptacles 27 for the child seat are arranged.

Another receptacle 28 is located in the upper area of the rear wall 23. In this way, the child seat can be connected to the transport box 20 both with the seat surface and with the backrest.

As per isometric view 3 shown, the transport box can be removed from the cargo bike 1.

It can now be seen that there is a frame 7 under the transport box, which is designed as a ladder frame with the struts 8 oriented in the direction of travel. The frame 7 is aligned horizontally and connected to the rest of the frame 2, in particular welded.

4 is an isometric view of a cargo bike 1.

In contrast to the in 1 illustrated embodiment, the mudguards 29 are open at the front, so that the view of the entire rear wheel 6 is free from the side.

In this embodiment in particular, the wheel guards 29 can be an integral part of the transport box 20 .

5 is another isometric view of the cargo bike 1.

This embodiment corresponds 1 , the transport box 20 now being removed from the carrier and rotated through 180° so that the front wall 22 is now directed to the rear and the rear wall 23 is directed to the front.

Since the mudguards 29 are in the middle, their position has not changed.

The transport box 20 is now ideal for transporting objects.

The deep front wall 22 provides a low loading sill and the high rear wall 23 now ensures that the luggage does not slip out of the transport box 20 even when braking hard.

In particular for the transport of goods, it is also conceivable that the transport box 20, which is preferably made of a foam material, is provided with a casing or that an insert made of a harder material is inserted into the transport box 20 (not shown).

As per isometric view 6 shown, it is of course also possible with the transport box 20 with mudguards 29 open on the side, to place them on the vehicle with the rear wall 23 facing forward.

7 13 is an isometric view where the transport box 20 is not provided with wheel guards surrounding the rear wheel 6. FIG.

As in 8th shown, in this embodiment of the invention the side wall 24 of the transport box can have several, in particular at least two, preferably at least three, receptacles 31 for the mudguard distributed around the rear wheel 6 .

The receptacles can be formed from recesses, for example, by engaging corresponding pins of the mudguard in order to fasten it.

Furthermore, as in particular in 9 shown, the wheel guard 29 can also be an integral part of the side walls 24 of the transport box 20 .

In this embodiment, the mudguard is made of the same material as the rest of the transport box 20.

As per the perspective view 10 shown on the underside of the transport box 20, the side walls 24 of the transport box 20 can have sections 33 which protrude beyond the bottom 21 of the transport box 20.

In this embodiment, the mudguards 29 extend beyond the sections 33.

As in 11 shown, the sections 33 enclose the frame 7 of the cargo bike in the attached state.

The transport box 20 is thus secured in a form-fitting manner relative to the frame 7 at least transversely to the direction of travel.

Next is in 10 It can be seen that the side wall 24 of the transport box 20 has a recess 32 in the area of the wheels.

The recess 32 lies within the mudguard 29 and forms an area in which the side wall 24 is thinner than, for example, adjacent to the mudguard 29 on the other side.

Due to the recesses 32, the side wall 24 can move closer to the rear wheels, which increases the usable area (see in particular 11 ).

As in the view of the back of the cargo bike 1 according to 12 shown, the transport box 20 can be connected to the frame 7 via quick-release fasteners 13 .

The quick-release fasteners 13 can be designed, for example, as tension fasteners, via which the frame 17 is connected to the transport box 20 .

Correspondingly designed quick-release fasteners 13 can also be located on the opposite side, that is to say on the side of the transport box 20 pointing in the direction of travel.

The transport box 20 can be securely connected to the carrier 7 by the quick-release fasteners 13 .

In another embodiment of the invention, as in 13 shown, such quick-release fasteners 14 are also within the transport box 20, in particular in the area of the bottom of the transport box 20.

14 12 is a plan view of the side wall 24 of the transport box.

The transport box 20 can have a length 1 of 40 to 120 cm, preferably 70 to 90 cm.

The transport box has a maximum height h, which extends from the lower portion 33 of the side walls to the edge 26. The height h is preferably between 30 and 70 cm, particularly preferably between 35 and 45 cm.

In the area of the front end of the front wall 23, the transport box 20 is preferably lower.

In particular, the height in this area is at least 0.8 times the maximum height, in particular 0.8 to 0.95 times the maximum height h.

The front wall 22 can have a height which is 0.3 to 0.7 times, preferably 0.35 to 0.5 times the height of the rear wall 23 .

The rear wall 23 is at an angle β to the vertical of 10 to 30°, preferably 15 to 25°.

The front wall 22 can be at an angle γ to the vertical of 10 to 30°, preferably 16 to 20°.

The angle α, which forms the converging upper edges of the side wall 24 at the edge 26, is preferably between 120 and 160°, particularly preferably between 130 and 150°.

15 is a cross section of the transport box 20 in the area of the recesses 32 for the rear wheels.

It is shown that the thickness of the side wall 24 in the area of the recess 32 is reduced to less than a third of the other thickness.

As a result, the side walls 24 can move close to the wheels on the inside.

The invention made it possible to provide a multifunctional, simply designed cargo bike.

reference list

1

cargo bike

2

framework

3

crank

4

handlebars

5

front wheel

6

rear wheel

7

framework

8th

strut

9

seat tube

10

child seat

11

seat

12

backrest

13

quick release

14

quick release

20

Pet crate

21

floor

22

front wall

23

back panel

24

Side wall

25

wall top edge

26

edge

27

Child seat mount

28

rear mount for child seat

29

fenders

30

Wall

31

Mounts for mudguards

32

recess

Claims (18)

Crank-operated vehicle, in particular multi-track cargo bike, comprising a frame, a saddle, a pedal crank and a handlebar, the vehicle having a transport box, characterized in that the transport box can be attached to the vehicle in two different orientations. Vehicle according to the preceding claim, characterized in that the transport box has two side walls, a rear wall and a front wall, the front wall being lower than the rear wall. Vehicle according to one of the preceding claims, characterized in that the transport box is arranged on a carrier connected to the frame, in particular a carrier which is designed as a ladder frame. Vehicle according to one of the preceding claims, characterized in that the transport box is made from a foam, in particular from a closed-cell foam, in particular from a particle foam, in particular from expanded polypropylene. Vehicle according to one of the preceding claims, characterized in that the transport box is arranged between the wheels of a rear or front axle of the vehicle. Vehicle according to one of the preceding claims, characterized in that the side walls of the transport box each have a recess for the adjacent wheel of the vehicle, in particular a recess in the shape of a segment of a circle when viewed from the side. Vehicle according to one of the preceding claims, characterized in that the side walls, the floor, the rear wall and/or the front wall of the transport box is/are flat at least on its inside. Vehicle according to one of the preceding claims, characterized in that the vehicle has a seat for a seat, in particular a child's seat. Vehicle according to the preceding claim, characterized in that the receptacle is arranged on the floor and/or the rear wall of the transport box, in particular that the receptacle comprises at least one opening in the floor of the transport box, the child seat being connectable to the carrier through the opening. Vehicle according to one of the preceding claims, characterized in that the transport box has positive-locking elements which engage in the carrier from above and/or enclose the carrier at least in sections. Vehicle according to one of the preceding claims, characterized in that the transport box is designed as a one-piece molded part. Crank-operated vehicle, in particular according to one of the preceding claims, comprising a frame, a saddle, a crank and a handlebar, the vehicle having a transport box, characterized in that the transport box has side walls each with a mudguard. Vehicle according to the preceding claim, characterized in that the mudguards are removable. Vehicle according to the penultimate claim, characterized in that the mudguards are an integral part of a transport box designed as a molded part. Vehicle according to one of the preceding claims, characterized in that the wheel guards partially cover the adjacent wheel at the front, in particular up to slightly the bottom of the transport box. Vehicle according to one of the preceding claims, characterized in that a center of the mudguards is arranged centrally with respect to the floor of the transport box. Transport box designed for a vehicle according to one of the preceding claims. Transport box according to the preceding claim, characterized in that the transport box comprises mudguards and/or at least one child seat.

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