DE102020204882A1 - Supply unit for the electrical supply of an electric bike - Google Patents

Abstract

The invention relates to a supply unit (10) for the electrical supply of an electric bicycle with a battery (11), a lock assembly (12) and a pivot bearing (13), the lock assembly (12) and / or the pivot bearing (13) on a carrier ( 14) are pre-assembled so that the lock assembly (12) and / or the pivot bearing (13) and the carrier (14) form a pre-assembly group (25).

Description

According to a first and second aspect of the invention, the invention relates to a supply unit for the electrical supply of an electric bicycle with a battery, a lock assembly and a pivot bearing.

A third aspect of the invention relates to a bicycle frame.

A fourth aspect of the invention relates to an electric bicycle.

In the manufacture of an electric bicycle, the supply unit is increasingly integrated into the frame tube instead of being placed on a frame tube, as was previously the case. The associated optical advantage is counteracted by increased manufacturing costs. The increased production effort results, among other things, from poor accessibility to the installation space within the frame tube, so that the production steps have to be carried out in a complicated and time-consuming manner.

The invention has the object of improving a supply unit of the type mentioned at the outset in such a way that it can be installed more easily and quickly than before.

The invention solves the problem set according to a first aspect of the invention with a generic supply unit in which, according to the invention, the lock assembly and / or the pivot bearing are preassembled on a carrier so that the lock assembly and / or the pivot bearing and the carrier form a preassembly group.

A second aspect of the invention also solves the problem with a generic supply unit in which a carrier and a pivot bearing are prefabricated in one piece as a semi-finished product.

The carrier, which is prefabricated in one piece with the pivot bearing, can be manufactured inexpensively as an injection-molded part. A lock assembly can then be pre-assembled on the carrier of the semi-finished product, so that the lock assembly and the semi-finished product form a pre-assembly group.

Both aspects of the invention enable time-saving and thus cost-saving assembly steps that can be carried out outside of a bicycle frame, whereby the entire assembly effort is also reduced. Cycle times on an assembly line are thus reduced.

In a simple and thus inexpensive variant, the carrier can be designed in the form of a plate. It can be provided with holes for fastening and / or for reasons of weight saving. Because a stiffness-reducing cutout must be provided in the area provided for the supply unit in the bicycle frame, the carrier can additionally increase the rigidity of the bicycle frame in the area of the cutout. It can therefore be made from a reinforced plastic or from a sheet metal possibly provided with stiffening ribs.

To increase the rigidity, the carrier can also be designed in the shape of a trough with a curved cross-section.

To save weight, the carrier can alternatively be designed like a grid.

The pre-assembly group can preferably be mounted in a down tube of a bicycle frame. The pre-assembled carrier is suitable for all types of bicycle frame, including those without a top tube.

In particular, in the event that the bicycle frame does not have a top tube that increases the rigidity of the frame, the pre-assembly group can be mounted on a stiffening element. The stiffening element can be attached to the bicycle frame before the assembly of the pre-assembly group. The stiffening element can be a lattice-like forged part.

The stiffening element can be connected to the bicycle frame by a joining process, preferably by welding or gluing. Alternatively, screws or rivets can also be used. The use of quick release devices is also possible and considerably reduces the assembly time. The same fastening options are also suitable for fastening the carrier or the pre-assembly group in the bicycle frame or on the stiffening element.

The invention also relates to a bicycle frame, in particular with a down tube, for an electric bicycle, which according to the invention has a supply unit according to one of claims 1 to 7.

Likewise to increase the rigidity, the bicycle frame can have two opposing sockets extending over a partial area of the bicycle frame. The base can accommodate the carrier or the pre-assembly group or the stiffening element. The bases can preferably be provided in the down tube.

Finally, the invention also relates to an electric bicycle which, according to the invention, is equipped with a supply unit according to one of Claims 1 to 7.

In the following, exemplary embodiments of the inventions are explained in more detail with reference to the accompanying drawings.

• 1 eine Explosionsansicht eines ersten Ausführungsbeispiels einer Versorgungseinheit;
• 2 ein erstes Ausführungsbeispiel einer Vormontagegruppe und einen mit einem Ausschnitt versehenen Bereich eines Fahrradrahmens;
• 3 eine Explosionsansicht eines zweiten Ausführungsbeispiels der erfindungsgemäßen Versorgungseinheit;
• 4 ein zweites Ausführungsbeispiel der Vormontagegruppe und den mit dem Ausschnitt versehenen Bereich des Fahrradrahmens;
• 5 einen Akku und die in den Fahrradrahmen montierte Vormontagegruppe;
• 6 eine perspektivische Schnittansicht durch einen Fahrradrahmen.

Show in detail:

• 1 an exploded view of a first embodiment of a supply unit;
• 2 a first exemplary embodiment of a pre-assembly group and a region of a bicycle frame provided with a cutout;
• 3 an exploded view of a second embodiment of the supply unit according to the invention;
• 4th a second embodiment of the pre-assembly group and the area of the bicycle frame provided with the cutout;
• 5 a battery and the subassembly mounted in the bicycle frame;
• 6th a perspective sectional view through a bicycle frame.

1 shows a supply unit 10 with a battery 11 , a lock assembly 12th , a swivel bearing 13th and a plate-shaped carrier 14th . The battery 11 supplies an electric motor, not shown, of an electric bicycle, also not shown in detail, with electrical energy.

The lock assembly 12th fixes the battery 11 so that it cannot be unintentionally detached from the electric bike while it is in use, but only when necessary. The battery 11 can for its removal and its installation around the pivot bearing 13th be swiveled.

Before the supply unit 10 in a bicycle frame 20th of the electric bike will be the lock assembly 12th and the swivel bearing 13th outside the bike frame 20th on the carrier 14th pre-assembled so that the lock assembly 12th , the swivel bearing 13th and the carrier 14th a pre-assembly group 25th form (see 2 ). The lock assembly 12th , the swivel bearing 13th and the carrier 14th provided as separate parts.

For installing the pre-assembly group 25th in the bike frame 20th this is done with a cutout 21 Mistake. It is also used in the bicycle frame 20th to accommodate a lock cylinder of the lock assembly 12th a breakthrough 22nd brought in. Around one through the neckline 21 To compensate for the loss of stiffness caused is in the bicycle frame 20th a lattice-like stiffening element 23 built in and welded. There are longitudinal holes in the bicycle frame for the welding process 24 provided so that the welding process can be carried out quickly and easily from the outside.

3 shows a supply unit 30th with the battery 11 , the lock assembly 12th , the swivel bearing 13th and a grid-like carrier 31 . The swivel bearing 13th and the carrier 31 form a one-piece prefabricated semi-finished product 32 . The semi-finished product 32 is an injection molded part, which is preferably made of a reinforced plastic.

The lock assembly 12th becomes outside of the bike frame 20th on the carrier 31 or on the semi-finished product 32 pre-assembled so that the lock assembly 12th and the semi-finished product 32 a pre-assembly group 45 form (see 4th ).

The pre-assembly group 45 becomes one with a breakthrough 44 and a cutout 41 provided bicycle frame 40 built-in (see 4th ).

The bike frame 40 has two sockets that extend over a portion of the bicycle frame 42 and 43 equipped (see 4th and 6th ). The pedestal 42 and 43 serve as a support for the wearer 31 . They also increase the pedestal 42 and 43 the rigidity of the bicycle frame 40 . The bike frame 40 can be in the area of the base 42 and 43 with holes 60 be provided. The holes 60 may be threaded to the carrier 31 with the bike frame 40 to screw. Alternatively, the holes 60 used to the carrier 31 from the outside with the bike frame 40 to weld.

Finally can on the battery 11 a cover 50 and in the fully assembled bicycle frame 20th installed (see 5 ).

List of reference symbols

10

Supply unit

11

battery pack

12th

Lock assembly

13th

Swivel bearing

14th

carrier

20th

Bicycle frame

21

Cutout

22nd

breakthrough

23

Stiffening element

24

Longitudinal hole

25th

Pre-assembly group

30th

Supply unit

31

carrier

32

Semi-finished product

40

Bicycle frame

41

Cutout

42

base

43

base

44

breakthrough

45

Pre-assembly group

50

cover

60

hole

Claims (10)

Supply unit (10) for the electrical supply of an electric bicycle with a battery (11), a lock assembly (12) and a pivot bearing (13), characterized in that the lock assembly (12) and / or the pivot bearing (13) on a carrier (14 ) are preassembled so that the lock assembly (12) and / or the pivot bearing (13) and the carrier (14) form a preassembly group (25). Supply unit (30) for the electrical supply of an electric bicycle with a battery (11), a lock assembly (12) and a pivot bearing (13), characterized in that a carrier (31) and a pivot bearing (13) are made in one piece as a semi-finished product (32) are prefabricated. Supply unit (30) according to Claim 2 , characterized in that the lock assembly (12) is pre-assembled on the carrier (31) of the semi-finished product (32) so that the lock assembly (12) and the semi-finished product (32) form a pre-assembly group (45). Supply unit (10, 30) according to one of the preceding claims, characterized in that the carrier (14) is designed in the form of a plate. Supply unit (10, 30) according to one of the Claims 1 until 3 , characterized in that the carrier (31) is designed like a grid. Supply unit (10, 30) according to one of the preceding claims, characterized in that the pre-assembly group (25, 45) can be mounted in a down tube of a bicycle frame (20, 40). Supply unit (10, 30) according to one of the preceding claims, characterized in that the preassembled carrier (14, 31) can be mounted on a stiffening element (23). Bicycle frame (20, 40), in particular with a down tube for an electric bicycle, characterized in that the bicycle frame (20, 40) has a supply unit (10, 30) according to one of the Claims 1 until 7th having. Bicycle frame (20, 40) according to Claim 8 , characterized in that the bicycle frame (20, 40) has two opposing sockets (42, 43) extending over a partial area of the bicycle frame (20, 40). Electric bicycle, characterized in that it has a supply unit (10, 30) according to one of the Claims 1 until 7th having.

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