EP3717331A1

EP3717331A1 - Means of transport having an energy store

Info

Publication number: EP3717331A1
Application number: EP18779586.9A
Authority: EP
Inventors: Pierre Nonnenmacher; Ester RUPRECHT
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2017-11-30
Filing date: 2018-09-20
Publication date: 2020-10-07
Also published as: CN111386220A; WO2019105627A1; DE102017221482A1; JP2021504223A; US20200361509A1

Abstract

The invention relates to a means of transport (10) having at least one wheel (12), which is driven by means of an electric motor (14). The electric motor (14) is part of the means of transport. It furthermore comprises a brake (16) for braking the wheel (12) and/or the motor (14), wherein the brake (16) has an actuating means (18). The motor is supplied by an energy store (20). According to the invention, the energy store (20) is fixed to the actuating means (18).

Description

Means of transport with an energy store

The present invention relates to a conveyor, which is preferably a stroller powered by an electric motor and supplied with electrical energy by an energy store.

There are known means of transport having an electric motor which is powered by a battery or a battery with electrical energy. Here, for example, as in DE 10 2011 14337 Al the battery on

Conveyor mounted so that it takes up space that is necessary for other components. In the cited document, the energy storage is mounted on the underside of a baby carriage, being mounted directly below the lying surface of the baby carriage. On the one hand, this makes it difficult to heat the energy storage device, and on the other hand it transfers heat to the passenger transport area of the pushchair. In addition, such positioning of the battery is a hindrance to a folding of the

Pram.

The present invention according to the independent claim has the advantage that an energy storage device is easily accessible and at the same time space-economically mounted in the region of an actuating means of a brake of a conveyor. This space-saving configuration is possible, with space is kept free, which is usually necessary for other components. Further, the energy storage in this exposed position is easy to defrost, since no surrounding parts of the means of transport

heat-insulating effect on the energy storage. In addition, due to the novel position of the energy storage, there is easy handling with regard to replacement and / or recharging, since the accessibility is significantly increased compared with the positioning of the energy store proposed in the prior art. To achieve the benefits this includes

Transport means at least one wheel which is driven by means of an electric motor. This wheel with the engine is braked by the brake. In this case, the brake can either with the wheel or with the engine or even with both interact to determine the means of transport or the To change speed. To operate the brake is that

Actuating provided. At this actuating means is the

Energy storage, as previously described, according to the invention attached.

The measures listed in the dependent claims are advantageous developments and improvements in the independent

Claim specified device possible.

The wheel may advantageously be attached to an axle. In this alternative, the actuating means is fixed to the axle, or arranged at least in the region of the axis. Thereby, a direct mechanical connection between the actuating means and the wheel can be made, which allows a simple construction.

Advantageously, the actuating means can protrude radially from the axis. Thus, the axle has an axial direction and a radial direction, the wheel rotating around the axial direction. The radially projecting actuating means promotes the operability of the brake, so that an easy handling of the means of transport can be achieved.

A prior art superior innovation represents a guide for the energy storage, which can be performed on the actuating means. The guide allows easy positioning of the energy storage, so that a secure fastening of the energy storage can be guaranteed.

Advantageously, the guide is designed at least as a groove. The groove or the guide may extend along the actuating means. The guide may be formed on a side of the actuating means which faces the driving surface on which the conveying means is moving.

Alternatively or additionally, the guide can be arranged laterally on the actuating means. This creates a variety of mounting options for the energy storage.

The energy store may advantageously have at least one guide means, which with the at least one guide of the actuating means works together. These corresponding elements may be formed, for example, as a tongue-and-groove-like structure. It is also a reversal of the forms conceivable, so that a guide or groove is formed on the energy storage. The guide means can be understood as a protruding structure which engages in the guide. Such a guide can both on the

Energy storage, as well as be formed on the actuating means. It is also possible for both the energy store and the actuating means to have a guide means and a guide. Due to the multitude of

Possibilities in the design of the guide structure, a particularly secure hold of the energy storage can be guaranteed.

Very expedient may be an embodiment whose energy storage is protected from external environmental influences. Such environmental influences may be water and / or dust and / or shock and / or electrostatic charges and / or chemical agents. In order to produce this resistance to environmental influences, the energy store can be arranged in a shell.

An alternative embodiment comprises a compartment which on

Actuating means may be formed. The compartment can serve as a guide and / or to differentiate from environmental influences. It is also conceivable that, in addition to the compartment, a guide structure consisting of guide means and guide according to the preceding embodiment may be included. The tray is characterized by the fact that it can be completely closed. The energy storage can be added to the compartment and the compartment can be closed by means of a lid. The lid may be attached to the via a hinge or other connection means

Be attached actuating means or the rest of the compartment. The lid can also be formed loosely or be integrated in the energy storage itself. If the lid is integrated in the energy store, then joining the energy store in the compartment causes a simultaneous closing and preferably sealing against environmental influences. All these alternatives

Embodiments may facilitate handling of the

Effecting a means of transport. In an advantageous development, the actuating means can be made double. In this case, the actuating means which projects radially from the axis may be formed at two radially opposite locations of the axis. It stands radially at two opposite locations. As a result, an expanded possibility for accommodating the energy storage can be created.

Preferably, the energy store is rechargeable. Lithium batteries can be used. In this case, the energy storage is advantageously realized in a modular design by battery cells.

In one embodiment of the invention, the actuating means may be formed pedal-shaped. It is thus shaped flat, wherein the plane of the surface of the actuating means may be aligned parallel to the longitudinal extent of the axis of the wheel. It is also possible to lay the direction of the longitudinal extent of the axis in the plane of the actuating means. As a result, an attachment of the energy storage is facilitated as a better

Fastening possibility is created.

To add the energy storage, it is pushed in the guide from the free radially projecting end of the actuating means along the guide to the axis. Alternatively, the energy storage can also come to a halt before, so that it does not have to be pushed to the axis.

If the actuating means is straight, then its radial alignment

Extending direction substantially with the radial direction of the axis.

Alternatively, it is conceivable that the actuating means has a kink, so that it is formed in two radial directions relative to the radial direction of the axis. So storage space for the energy storage can be created.

Basically, the axle can be equipped with two wheels, which can be mounted in the region of the axial ends. This represents a possible

Alternative to a variant that may have only one wheel, in which case the brake can be formed next to the wheel. The brake can as described above by an actuator according to the previous

Embodiments are triggered.

All the above embodiments are applicable to a stroller. In addition, the embodiments are also applicable to other means of transport such as wheelbarrows, shopping carts, walkers, luggage trolleys, sack trucks and other means of transport for the local area.

In the following drawings are shown, which contain the inventive concept, but the invention according to the independent

Do not restrict the claim. The drawings merely illustrate a specific embodiment of the invention. In addition, all features in the drawings, insofar as they are clear, are individually isolatable and within the scope of the drawings

Invention combined with other features.

Show it:

1 shows a conveyor according to the invention with a brake and an actuating means to which an energy store is attached, FIG.

2 A to C different actuating means according to the invention, which are provided with guides for Zufügende energy storage,

FIG. 3 shows a double-executed actuating element,

FIG. 4 shows an axle with two wheels and an actuating means and a switch,

FIG. 5 shows a plan view of an axle with an actuating means,

FIG. 6 shows a perspective view of an axis with actuating means,

Fig. 7 shows a section through an actuating means. In Figure 1, a conveyor 10 is shown. The vehicle 10 may include a stroller, a shopping cart, a rollator, a sack truck

Luggage cart, a scooter, a wheelbarrow or otherwise

Be means of transport. All these conveyors 10 have at least one wheel 12 which is driven by a motor 14. This engine 14 is an electric machine. Further, the wheel 12 may be detected by a brake 16 or its rotational speed may be changed.

The brake 16 is actuated by means of an actuating means 18. The

Actuating means 18 extends in the radial direction away from an axis 22 which lies on the axis of rotation of the wheel 12. Essentially, the actuating means 18 is mounted on the axle 22 and spaced axially from the wheel 12 in the axial direction of the axle 22. The actuation of the brake 16 via a mechanical connection of the actuating means 18 and the brake sixteenth

On the underside of the actuating means 18, an energy storage 20 is attached, which supplies the motor 14 with electrical energy. The bottom of the

Actuator 18 is the driving surface, on which the conveyor 10 moves, facing.

In order to illustrate the attachment of the energy store 20 to the actuating means 18, FIG. 2 shows a side view of the actuating means 18 and of the energy store 20 before joining the energy store 20.

FIG. 2 A) shows a first variant of the structure of the actuating means 18 according to the invention with the battery 20. The actuating means 18 is attached to the axis 22 of the wheel 12, which is not shown in Figure 2, attached. The actuating means 18 extends from the axis 22, starting in

Radial direction and has a free end. In the region of the free end, a guide 24 is formed, which extends on the side of the actuating means 18 along the direction of extension thereof. The guide 24 is groove-shaped as a slot. Imagine now, anticipating Figure 4, an actuating means 18 which is flat, one could on two opposite sides at the edge of the planar actuating means 18 respectively to train a leadership 24. Thus, one obtains a possible embodiment of the device shown in FIG. In the guide 24, a guide means 26 which is integrally formed on the energy storage 20, feasible. The guide means 26 is formed complementary to the guide 24, which leads in the present case to a projecting web. The web is guided in the guide 24. For this purpose, the energy store 20 has a longest extending complementary receptacle, which has two opposing webs. In the receptacle at least a part of the actuating means 18 is added, in particular the portion which is arranged below the guides 24. The receptacle has a U-shaped upwardly open cross-section. That's it

Guiding means 26 integrally formed in the upper region of the energy store 20, so that after the joining of the energy storage is mounted substantially below the actuating means 18 in a suspended manner.

It is an alternative embodiment conceivable that a flat

Actuating means 18 comprises, which has on its underside a receptacle which comprises two mutually facing guides 24 in the region of the lateral edge of the planar actuating means 18. These guides 24 extend at least partially from a free end of the actuating means 18 towards a fixed end which is fixed to an axle 22. A cross section in the direction of the axial direction of the axis 22 through the

Actuating means 18 in the region of the guides 24 results in a downwardly U-shaped open structure. On the inwardly directed sides of the legs of the U-shaped structure, the guides 24 are formed. The thighs point down. The guides can be formed at the same height in the legs. For this purpose, the energy store 20 is designed to be complementary with its guide means 26. The guide means 26 protrude laterally from the energy store 20 and are complementary to the guide 24. They are preferably designed as a closed, extending in the joining direction and not interrupted web. The guide 24 and the guide means 26 have a latching function, which hold the energy storage 20 firmly in the actuating means 18.

At the actuating means 18 are contacts 21 for electrical contacting and the energy storage 20 associated mating contacts 23 are formed. The Contacts 21 may be formed, for example, in the guide 24 and / or on a surface of the actuating means 18 facing the energy store 20. For example, such an area in the region of the axis 22

be provided. The counter contact 23 can therefore on the

Guide means 26 and / or on an end face of the energy storage 20, which faces the axis 22, be formed.

The energy storage 20 is encapsulated in a shell 28, which is the

Energy storage 20 protects against environmental influences. Thus, a hermetic seal of the energy storage 20 is achieved. In addition, the shell 28 can also be made robust to withstand mechanical influences. Likewise, a shield against electromagnetic influences or chemical influences through the shell is possible.

The actuating means 18 has a kink 32, wherein the kink 32 between the guides 24 and the axis 22 is arranged. The kink 32 divides the actuating means 18 into a straight section which carries the guides 24 and a second section which comprises the fixed end of the actuating means 18 with the axis 22. The second section may be straight or curved. By the bend 23 is a plane in which lies the straight portion which has the guides 24, aligned parallel to the longitudinal direction of the axis 22.

According to FIG. 2 B), an energy store 20 can be added to a compartment 30. The compartment 30 is below the substantially identical actuator 18

arranged. In this case, the compartment 30 comprises a shelf 29 which extends from the axis 22 radially in the same direction as the actuating means. The shelf 29 may be aligned substantially parallel to the straight portion of the actuating means 18, which carries the guides 24.

The energy store 20 is essentially guided into the compartment 30 as in FIG. 2 A) and positioned by means of the guide 24 and the guide means 26. After the energy storage device 20 has been fitted in the compartment 30, a lid 31 is placed on the opening of the compartment 30, which hermetically seals the compartment. To this Way can be dispensed with a shell 28 which surrounds the energy storage 20. But it can also represent a gain of the shell 20.

The lid 31 can be provided as a loose component as in FIG. 2 B).

Alternatively, it may also be a lid 31 with a hinge at the particular at the free end of the actuating means 18 or the shelf 29. Such a lid 31 with hinges can thus be folded onto the opening.

FIG. 2C) likewise shows an embodiment with a compartment 30, wherein the cover 31 is attached to the energy store 20 this time. Thus, the opening of the compartment 30 with the joining of the energy storage 20 is automatically closed. The lid 31 is attached to one of the joining direction oppositely directed end of the energy storage 20. The lid 31 is integrated in the energy storage 20.

The energy storage 20 of Figures 2 A), B) and C) is pushed at the free end with its guide means 26 in the guide 24 of the actuating means 18 in the direction of the axis 22. In this case, the energy store 20 is guided to the bend 32 or to the axis 22 within the guide 24. This takes place until the locking function is actuated. It comes to contacting the contacts 21 and the mating contacts 23 with each other.

Another embodiment includes two opposing ones

Actuating means 18, as shown in Figure 3. The two

Actuating means 18 are formed substantially mirror-symmetrically to the axis 22. Both actuating means 18 extend in the radial direction and may also have a kink 32. The joining of the energy store 20 can be carried out as in the previous embodiments. There are two

Actuating means 18 are formed, two energy storage 20 can be joined. In each case, an energy store 20 is attached to an actuating means 18. It is also possible to attach only one energy store 20, while the second actuating means 18 remains without energy store 20. Thus, the conveyor 10 can be supplied, for example, for long distances with two and for short distances with an energy storage 20. FIG. 4 shows a plan view of the axle 22 with two wheels 12 and a double actuating means 18. In addition to the actuating means 18, a switch 34 is formed. The switch 34 may be a button actuated by a foot of an operator. It can also be a button for a finger. The switch may, for example, be the main switch for the means of conveyance 10 with which the means of conveyance 10 is put in a running condition. This embodiment according to Figure 4 is possible for all embodiments that are included in this present description. In particular, this can be combined with a stroller.

All embodiments and their features can be combined with each other to meaningful further features in the sense of the inventive concept. Thus, for example, the double embodiment of FIG. 3 may be co-ordinated with the embodiments of FIG.

In Figure 5, a variant of the invention is shown, in which the actuating means 18 is not arranged symmetrically to the axis 22, so that a larger part 181 of the actuating means 18 projects radially from the axis 22, while with respect to the larger part 181 smaller portion 182 opposite to larger part 181 projects radially from the axis 22. The larger part 181 is preferably directed away from a pushing user of the conveyance means 10 so that the smaller part 182 faces the user.

As shown in the alternative of FIG. 5, the actuating means 18 is arranged centrally between the wheels 12 along the axial direction of the axle 22. This is illustrated by the dashed line, which is intended to illustrate only the central arrangement.

The embodiment of Figure 6 shows a variant of Figure 5. The axis 22 may be integrally connected to a housing 31 for the battery 30. This is shown in FIG. 7, where it can be seen that the axle 22 passes directly into the housing 31 of the receptacle for the battery 30. The housing 31 may be embodied as the compartment 30. The axis thus does not extend through the Housing 31, so that the interior is free from the axis 22. The axis 22 and the housing 31 may be made of the same material.

The axis 22 may be square as shown in Figure 5 or round, so that torsion properties of the axis 22 and the connection between the axis 22 and housing 31 can be adjusted.

The brake 16 can be actuated directly by the axis 22. In this case, the axis 22 can rotate by actuating the actuating means 18, and actuate the brake 16. Alternatively, it is also conceivable that the axis 22 is quiet upon actuation of the actuating means 18, and the brake 16 is actuated by a mechanism which is arranged inside or outside the axis 22.

The actuating means 18 may be coated from above with a non-slip coating 36. In this case, for example, as in the figure 6, the coating 36 may be mounted on the housing 31. It is also conceivable that a portion of the pad 36 is disposed on the battery 20. The pad 36 may consist of the material of the housing 31 and have only a non-slip profile. It may alternatively consist of a rubber.

The wheels 12 of Figure 6 have at least on an axially directed side lights 38, which may be circular. The lights can be realized as LED lights. The lights 38 may be arranged in a ring shape about the pivot point of the wheel 12.

Further, the wheels 12 of FIG. 6 may include wheel hub motors.

Claims

claims

1. means of transport (10) comprising:

at least one electric motor (14), at least one wheel (12) driven by the electric motor (14), a brake (16) for braking the wheel (12) and / or the motor (14), the brake (16) has an actuating means (18), an energy store (20) for the electric motor (14),

characterized in that

the energy store (20) is attached to the actuating means (18).

2. means of transport (10) according to claim 1, characterized

characterized in that the actuating means (18) is mounted on an axle (22) of the wheel (12).

3. means of transport (10) according to claim 1 or 2, dadruch

characterized in that the actuating means (18) projects radially from the axis (22).

4. means of transport (10) according to one of the preceding

Claims, characterized in that the actuating means (18) comprises a guide (24) which is designed for positioning the energy store (20). Means of transport (10) according to one of the preceding

Claims, characterized in that the guide (24) is at least one groove, preferably on a lower side of the actuating means (18) and / or laterally on the Actuating means (18) is arranged.

6. means of transport (10) according to one of the preceding

Claims, characterized in that the energy store (20) has a guide means (26) which corresponds to the guide (24).

7. means of transport (10) according to one of the preceding

Claims, characterized in that the energy store (20) is resistant to external environmental influences such as water and / or dust and / or shocks and / or electrostatic charge by being arranged in a shell (28).

8. means of transport (10) according to one of the preceding

Claims, characterized in that on the

Actuating means (18) a compartment (30) is formed, which receives the energy storage device (20) to guide it and / or to separate from the environment.

9. means of transport (10) according to one of the preceding

Claims, characterized in that the actuating means (18) is made double, and at two preferably opposite locations radially from the axis (22) protruding.

10. means of transport according to one of the preceding claims, characterized in that the energy store (20) is rechargeable, and preferably comprises battery cells.

11. means of transport (10) according to one of the preceding

Claims, characterized in that the actuating means (18) is formed flat, and the plane of the actuating means (18) is aligned parallel to the longitudinal extent of the axis (22).

12. means of transport (10) according to one of the preceding

Claims, characterized in that the energy store (20) in the guide (24) from the free radially projecting end of the actuating means is pushed to the axis (22).

13. means of transport (10) according to one of the preceding

Claims, characterized in that the actuating means (18) has a kink (32), so that it in two

Directions relative to the radial direction of the axis (22) extends.

14. means of transport (10) according to one of the preceding

Claims, characterized in that two wheels are mounted on the axle (22).

15. means of transport (10) according to one of the preceding

Claims, characterized in that a stroller is.