Device for driving a ship's propeller using muscle power

Abstract

Device for driving a ship's propeller by muscle power, characterized in that a pulley (3) with a wound-up pull rope (5) is unwound via a pulling device (13) and (5), a freewheel (4) is pressed into the pulley (3) which is in connection with a drive shaft (2) and a ship's propeller (9).

Description

[0001] The present invention relates to a rudder device which makes it possible to drive a ship's propeller and thus to move a leisure boat or a SUP.

[0002] According to the invention, pulling a handle connected to a pull rope and a drive shaft propels a propeller, and thus also a recreational boat or a SUP. The rowing motion is the same as with a rowing machine. However, in this case, a propeller is driven by muscle power.

[0003] This invention makes it possible for the rower to sit facing forwards. State of the art

[0004] Such a drive is known in the prior art from DE 10 2019 003 058 A1.

[0005] This printed document reveals a box containing a pedal device for powering a paddle wheel or ship's propeller.

[0006] From the prior art of DE 10 2016 000 381 B4, a rowing device is known which makes it possible for the rower to sit facing the direction of travel.

[0007] This device is a rotary reversing mechanism, which is very complex.

[0008] A major disadvantage of DE 10 2019 003 058 A1 is its bulky and heavy size. Furthermore, the drive via a paddle wheel has a very poor efficiency.

[0009] Therefore, the object of the present invention is to improve upon the known disadvantages in the prior art and to provide a simple and cost-effective device.

[0010] This problem is solved by the characterizing features of the claims. Further essential features of the invention can be found in the dependent claims of the detailed description.

[0011] The invention will now be explained in more detail with reference to drawings.

[0012] It shows: Fig. 1 A schematic cross-section of the drive housing 1, with a pulling device 3 and 5, a drive shaft 2 with freewheel 4, a transmission gearbox 7, and a propeller 9 Fig. 2 A schematic cross-section of a boat with a rower 14 who sets a propeller 9 in motion by pulling the handle 13. Fig. 3 A top view of a SUP 16 with two drive devices 1, with propellers 9, which can be operated separately by their own pull device 13. This allows the SUP to be steered. A roller carriage 12 is located in the middle section of the SUP. Description:

[0013] The Fig. Figure 1 shows a schematic cross-sectional view of a device according to the invention for driving a ship's propeller 9 by muscle power.

[0014] Inside the drive housing 1 is a pulley 3 with a rope 5 wound onto it. The length of the rope corresponds to the pull length during operation. When the rudder 14 pulls the handle 13, the rope 5 unwinds from the pulley 3. This sets the shaft 2 into rotation. A transmission gear 7 is mounted at the vertical end of the shaft 2. This increases the rotational speed of the drive shaft 2 and thus sets the propeller 9 in motion.

[0015] When the rope 5 is unwound from the roller 3, a rope 6 is simultaneously wound onto the other end of the roller 3 in the opposite direction, which is put under tension by a spring 17 or rubber band.

[0016] When repeating the rowing process, the rower moves ( Fig. 2, Fig. 14) by means of a roller carriage ( Fig. 2, Fig. 12) and the pull handle ( Fig. 2, Fig. 13) to the starting position. During this process, the pull rope 5 is rewound onto the pulley 3 by a rewinding mechanism, a spring 17, or an elastic band 17. Rewinding is only possible because there is a freewheel 4 between the pulley 3 and the drive shaft 2, which engages only in the direction of pull.

[0017] The Fig. Figure 2 shows a schematic cross-sectional view of a CAT 15 or rowing boat 15 with a possible application example. It illustrates how a rower 14 on a roller carriage 12 exerts a pulling force on the pull handle 13 or on the pull rope 5 by bracing against it. This pulling force is transmitted in the drive housing ( Fig. 1, Fig. 1) deflected and ultimately causes a rotational movement of the ship's propeller and thus the propulsion of the boat 15 .

[0018] The Fig. Figure 3 shows a top view of a SUP 16 with two drives 1 and associated propellers 9. This illustration shows that each drive 1 has its own handle 13 with a pull rope 5. This allows the SUP 16 to be steered by pulling differently. The rower can use the roller carriage 12 and the footrests 18 to ( Fig. 2, Fig. 14) achieve a high tensile force on the pulling rope and thus also achieve a high speed. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2019 003 058 A1 [0004, 0008] DE 10 2016 000 381 B4

[0006]

Claims

[1] Device for driving a ship's propeller by muscle power, characterized by , that a pulley (3) with a coiled pull rope (5) is unwound via a pulling device (13) and (5), a freewheel (4) is pressed into the pulley (3), which is in connection with a drive shaft (2) and a ship's propeller (9). [2] Device for driving a ship's propeller by muscle power according to claim 1, characterized by , that a transmission gearbox (7) is installed between the drive shaft (2) and the propeller. [3] Device for driving a ship's propeller by muscle power according to claims 1 and 2, characterized by , that the pull rope (5) can also be made of a toothed belt or a rack. [4] Device for driving a ship's propeller by muscle power according to claim 1 , characterized by , that the freewheel (4) installed in the roller (3) is only positively connected to the drive shaft (2) in the direction of pull. [5] Device for driving a ship's propeller by muscle power according to claim 1 and 2, characterized by that the transmission can also consist of toothed pulleys and toothed belts or V-belts and V-pulleys. [6] Device for driving a ship's propeller by muscle power according to claims 1 and 2, characterized by , that the drive housing (1) has a streamlined shape. [7] Device for driving a ship's propeller by muscle power according to claims 1 and 2, characterized by , that a retraction mechanism (6) and (17) or a device which may consist of a spring (6) and (17) or of an elastic band, takes over the rewinding of the pull cord (5) onto the roller (3).

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