DE102015105478A1 - Three-wheeled rowing bike - Google Patents

Abstract

The invention relates to a rowing bicycle, consisting of a longitudinal and a cross member, wherein the cross member with two front wheels forms the steerable front axle and the longitudinal member comprises the rear axle driven by reaction forces with a rear wheel, and a seat which is arranged on the longitudinal member , According to the invention, it is provided that the longitudinal carrier (3) is arranged so as to be vertically rotatable about an axis of rotation (32) to the cross member (4), wherein the axis of rotation (32) is aligned in the longitudinal extent of the longitudinal member (3), the seat (5) designed as a rolling fit is and on the longitudinal beam (3) in the longitudinal extent of the longitudinal member (3) back and forth mobile, the reaction force on the rear wheel (8) via a force element (30), which with a gear (16) and the latter in turn with the rear wheel (8) is coupled.

Description

Technical area

The present invention relates to a three-wheeled rowing bicycle consisting of a longitudinal and a cross member, wherein the cross member with two front wheels forms the steerable front axle and the longitudinal member comprises the rear axle driven by reaction forces, and a seat which is arranged on the longitudinal member.

State of the art

Pedal-powered recumbents have, for example, two wheels on a steerable front axle and a pedal-driven drive wheel on the rear axle and a seat and a support frame. The seat attached to the support or longitudinal frame supports the rider from a nearly horizontal position to an upright posture and absorbs both the driver's weight and pedaling forces. In addition to such as commonly referred to as Tadpole wheels also recumbents of the so-called delta-construction form exist. These are characterized by two rear and one front wheel, the steerable front wheel is usually not driven.

Alternative drive means for such bicycles are also known. They are characterized by the fact that they are driven, for example by hand or by a combination with hand and feet. The steering is usually done by steering devices that are moved by hand or feet accordingly.

The weight distribution on the front and rear wheels has a major influence on the handling. The more weight you put on the front wheels, the more stable the cornering is. Too much weight can also have a negative effect, because not enough load remains on the driving rear wheel. It can then slip or slip away in bends. The susceptibility to tipping is also given in an unbalanced weight distribution.

As a track width, the distance between the two front wheels is understood to one another. For tipping stability, the wider the lower the danger of tipping. The track width should not be too large, so that the vehicle can still be used on a normal conventional bike path. Track widths ranging from 75cm to 1m are acceptable.

With regard to the steering geometry, the principle according to Ackermann is generally used. The wheels roll when cornering on a circular path. The diameter of these circles differs by the width of the vehicle. For efficient cornering, therefore, the wheels should be hit differently. With swivel axle steering with rigid axle, this is automatically the case. In the case of single-wheel steering, however, the outer wheel has to be hit less strongly because it describes a larger circular arc than the inner one. This can be achieved with the so-called steering trapeze axle, tie rod and two handlebars on the wheels. The handlebars are usually slightly turned inwards (the angle of attack results from an "imaginary" extension line to the contact point of the rear wheel), thereby resulting in them when turning the wheels unequal length effective lever arms. This causes the extensions of all wheel axles to intersect at about the center of the curve.

The position of the wheel pivot axis allows further improvements in stability and steerability. By spreading, that is tilting the pivot axis inward, it approaches the center of the footprint of the wheel, the rolling radius is smaller, steering resistance and the reaction of the wheels (eg by braking) to the steering reduce. The caster, that is, the distance between the pivot axis and the center of the footprint in the direction of travel is greater when it is tilted backwards. This achieves an automatic return to straight-ahead travel. By a slight toe, the wheels are not parallel, but close in the direction of travel, improves the straight-line.

The axle steering avoids the disadvantages of Schwenkachslenkung as tilt tendency and strong reaction of the wheels on the steering.

These features are usually used in recumbent or seated bicycles, which are driven by the feet via a chain drive and are usually steered by hand.

However, as soon as the power transmission to the rear wheel is not over the user's legs but over the hand or hands, a steering on the weight transfer or a control of the feet is necessary because the hands are no longer free.

The rudder wheel is a recumbent bicycle in which the user completes a rowing-like motion sequence and thus drives the bike. It is possible to use not only the leg muscles but also the abdominal, back and arm muscles for propulsion. It combines the technology of recumbent as a vehicle with that of a rowing machine as a training device. Rowing wheels are often used to train the entire body. Here are rowing wheels in the way of classic bicycle construction (one wheel in front, one wheel in the back) and in the formation of the Deltaform (one wheel in front, two wheels in the back) known.

In many of the known rowing machines, the seat is rigid and the user moves arms and legs to create propulsion. The balance only serves to keep the bicycle in its position of use, just like the conventional bicycle. A steering through the balance is not provided.

Disadvantages of the prior art

Since most of the rowing wheels are designed on the basis of a classic recumbent bicycle, there is no key to the performance of the training, namely that of balance. In addition, the movement is only approximately shown, so that the actual movement of the skull can not be performed.

The skull process is as follows: In the display, also called template, so at the beginning of the turn, the lower legs are approximately perpendicular to the water surface by rolling forward with the rolling seat, the upper body is slightly inclined forward. The upper body should preferably not rest on the thighs; the arms are stretched as far as possible to the front in order to achieve the greatest possible striking distance, the leaves are turned up orthogonal to the water surface, the lower edge of the leaf is no more than 5 cm above the water surface. At the end of the rolling movement, the rudder blades are submerged in the water.

This is immediately begun with the passage: The legs kick against the Stemmbrett (this should be taken to ensure that you do not start too strong, but the perceived use of force against Endzug increased), the arms are of course stretched, the upper body is carried along and goes into the vertical, this remains with the hip on a line.

The Skulls must, so that the inner levers (the part of the Skulls, which reaches from the dolle of the jib to the center of the boat) do not collide, be led by the rower one behind the other. In Germany the Backbordskull is seen from the rower before and slightly under the starboard skull, the Backbordskull is thus closer to the body. In the GDR, the starboard skull was led before and slightly below the port side, which was abandoned after the turn of 1990 in favor of a uniform technique. Both variants are equally effective. Therefore, the outriggers or Dollen are set 0.5-1.5cm differently, so usually port about 1cm lower than starboard. However, there is also the possibility of completely overlapping one another's hands (American method). For this, however, the boom of the boat must be mounted clearly different heights.

The arm flexion begins just before the hands pass through the knees. The leg extension is completed only after the Dolle.

As soon as the leg kick is over, the body leans back into the reserve (also supine), ie about 30 ° (from the vertical) to the back. The arms accelerate the move that ends when the hands touch the body. The inner lever speed in the final train must correspond to the beat frequency and boat speed. Then the leaves are raised by pressing down the hands vertically and spatter-free from the water and turned off. Once the leaves are clear of the water, the "hand path" begins. The upper body immediately follows the rearward movement of the inner levers, so that the hands do not go too far away from the body. The flowing demonstration of the inner lever with simultaneous entrainment of the upper body takes place at the same speed as the approach of the inner lever in Endzug. Then the rower pulls with his toes on the stalk board forward. When demonstrating the inner lever starts at the height of the Stemmbrettes the turning of the leaves, so that they stand in the display again vertically. Towards the display, the rudder handles are guided upwards and forwards - thus, the rudder blades approach the water and dive into the maximum display completely into it (also called setting or water catching).

In the design of the entire sequence of movements, a fluid and harmonious process, an overlapping course of movement is particularly important. Any jerky body and limb movement will negatively affect the propulsion and passage of the boat.

Object of the invention

The object of the invention is to develop a bicycle of the above type, that the Skullvorgang the rudder is imaged as well as possible.

Solution of the task

The basic idea of the solution of the problem is that by weight shifting a steering of the bicycle is brought about, whereby the corresponding propulsion is generated by the Skullbewegung.

The solution is provided by the features of claim 1.

Advantages of the invention

One of the significant advantages of the invention is that the motion required by the rudder bicycle of the invention reflects the typical rudder movement of the skull. In addition to the rudder movement itself, the leg movement and balancing of the balance correspond to a very close to the rowing on the water representable movement. As a result, the training effect can be significantly increased because on the one hand by a variety of training on the water and in the countryside a higher attractiveness is created, but also the training time can be increased, especially in winter or in bad weather.

The rudder movement is achieved by a force element which is coupled to a transmission and the transmission in turn to the rear wheel. The force element can be a movement element, articulated about a pivot point that moves in at least one direction, generates the necessary propulsion. A particular embodiment provides that the force element is a tension element. This tension element consists of a handle, which is held with both hands and to which a chain is attached, which is in operative connection with the transmission and thus indirectly with the rear wheel. By pulling on the tension element of the propulsion is generated by yielding the freewheel is activated. This movement corresponds exactly to the rowing.

Another advantage of the rowing bike is the fact that it is assembled from a variety of standard components, so that on the one hand, the production costs low but also the repair is simplified.

Due to the simple steering, realized by the rotatable suspension of the cross member relative to the side member, a very stable straight ahead and cornering is achieved. Longitudinal and cross members may be profile elements, such as T-beams, double T-beams or similar designs. Alternatively, a truss of pipes or similar support elements can form the chassis of the rudder bike.

In order to realize the roadworthiness of such a rowing bicycle, it is provided to provide the wheels with mudguards, to install front and rear lights and to provide a braking device. It has proven to be practicable to attach the brake device in the formation of a brake handle directly to the handle. The brake lever causes at least a braking of the rear wheel. Expanded brake devices envisage using disc brakes or drum brakes instead of rim brakes. This in turn allows that the front wheels can be provided with brakes.

A further embodiment provides to provide a parking brake, to avoid an independent driving away of the rowing bike, for example on a slope. The parking brake preferably brakes the rear wheel.

The propulsion of the rudder bicycle is achieved by a tension element. The tension element comprises a handle, which is gripped by the user with both hands and, as known in rowing or rowing ergometer, pulled in the longitudinal direction of the longitudinal member. In this case, a chain is provided as a tension element, which puts the rear wheel in rotation via corresponding pinion and gear in a train. The independent return of the tension element is effected by a force element, for example, a rubber band which is attached to the end of the tension element, is deflected by two pulleys and activates a freewheel. This means that no force is applied to the rear wheel when the user moves back to the display.

In order to better implement the force from the legs in the propulsion, a foot support element for receiving the feet of the user is provided on or on the side rail. Here, simple treads, but also treads with loops or clipless pedals, as they are known from the Radrennbereich be used.

A further training plans to understand the rowing bike also as "FunBike". It requires a lot of coordination and skill to move the rudder bike. It can be provided to use simple components to offer a cost-effective design. Alternatively or additionally, it may also be provided that the rudder bicycle additionally be provided with an e-bike drive.

So that the rowing bike can be easily transported, a folding or separating element is provided in the region of the longitudinal member. As a result, the longitudinal member can either be folded or separated, so that the rowing bicycle can be easily inserted into a trunk of a vehicle after the pluggable front and rear wheels have been removed.

An alternative embodiment provides that the longitudinal member is formed telescopically. By means of several tubes inserted in one another a shortening of the longitudinal member can be achieved without disassembling the rudder bicycle is necessary. The front and rear wheels are preferably removable by means of quick release fasteners.

Further advantageous embodiments will become apparent from the following description, the claims and the drawings.

drawings

Show it:

1 a perspective view of the rowing bike

2 another perspective view of the rowing bike according to 1 ;

3 another perspective view of the rudder bike according to 1 ;

4 an enlarged view of the rowing bike, namely on the area of Fußaufnähme;

5 an enlarged view of the rudder bike, namely on the area of the steering;

6 another enlarged view of the steering;

7 another enlarged view of the steering.

Description of an embodiment

In the 1 to 3 is a rowing bike 1 shown. This rowing bike 1 has a support frame 2 on. The supporting frame 2 includes a side member 3 and a crossbeam 4 , The side member 3 includes a receptacle for a seat 5 , preferably in the training of a rolling seat, on a sledge 6 longitudinally movable in the direction and against the direction of the longitudinal extension of the longitudinal member 3 is mobile. At the rear end 7 of the longitudinal member 3 is a rotatable rear wheel 8th arranged. In the front area 9 of the longitudinal member 3 is the crossbeam 4 arranged. At the free ends of the cross member 4 are the front wheels 10 arranged.

Furthermore, a force element 30 is provided, which is generated by moving a propulsion. A preferred embodiment, which is also shown in the figures, comprises as a force element 30 a tension element 11 , In addition, a means not shown in detail is provided, which automatically the tension element 11 again against the direction, given by the arrow 12 , pulls, wherein in this movement no propulsion is generated.

The articulation of the tension element takes place at the free end 9 of the longitudinal member 3 over a wegerstreckendes support element 13 , This is dimensioned such that the tension element 11 done in height comparable to rowing for the skulls. The tension element 11 consists of a train chain 14 , a handle disposed at the free end 15 as well as a gearbox 16 that with the pull chain 14 is in active connection. The gear 16 is also in operative connection with the rear wheel 8th ,

On the handle 15 - Alternatively to another component of the rowing bike 1 - is a brake 17 arranged. This consists of a brake handle 18 as well as brake elements 19 for example, on the rear wheel 8th or / and the front wheels 10 Act.

functionality

The user sits down - comparable to the rowing boat - on the seat 5 and supports one foot on the top of the side member 3 arranged footrest element 21 from. He puts the other foot on the crossbeam 4 , Now he starts with both hands on the handle 15 of the tension element 11 to draw. The power transmission of the train in the direction of the arrow 12 takes place on the rear wheel. The user pushes the seat with his feet 5 also in the direction of the arrow 12 , The force on the tension element 11 Thus, both by the hand-carried tensile force as by pressing the legs against the foot support element and thus method of the seat 5 generated.

Through the ride, the rowing bike gains stability. With sufficient stability of the changes in advance on the cross member 4 placed foot the position and relies on the footrest element 21 from.

The steering movements are brought about by a shift of weight. If the user moves to the left, the rudder bike moves to the left, the user moves to the right, the rudder bike moves to the right.

The steering movement is caused by tilting the longitudinal member 3 opposite the cross member 4 , The crossbeam 4 is about a joint element 25 coupled with the side member. The joint element 25 has one degree of freedom, namely a rotational degree of freedom. This degree of freedom corresponds to a possibility of rotation about an axis of rotation 32 parallel to the longitudinal extent of the longitudinal member 3 is aligned. The pivoting takes place in or against the arrow direction 27 , Advantageously, means are additionally provided which limit the one rotational degree of freedom. In addition, means may be provided which dampen the rotational movement.

On the side member 3 , preferably in the region of the joint element 25 , is a steering lever 26 intended. These steering levers 26 is on the crossbar 4 pointing side on the underside of the side member 3 attached and preferably extends over the cross member 4 out. At the free end of the steering lever 26 are each split tie rods 28a . 28b hinged. The tie rods 28a . 28b are over a toe lever 29 with the respective track axis 31 coupled. At the track axis 31 is pivoting the respective front wheel 10 arranged. With a tilting of the longitudinal member 3 this pivots about the axis 32 , This pivots the steering lever 26 , By coupling with the tie rods 28a . 28b becomes the track lever 29 pivoted and the front wheels 10 Pivot and give the rudder bike 1 a new direction.

Due to the corresponding front wheel position and the geometry, the front wheels are adjusted 10 in a straight-ahead position, provided that there is no off-center impulse by the user over the longitudinal member 3 he follows.

The rowing bike gives you the opportunity to do a rowing exercise in a variety of ways and is very good at skull rowing in the essentials. The coordinative and cognitive skills are strongly promoted. Therefore, the rowing bike can be seen as a supplement to power rowing.

Alternatively, however, the rowing bike for everyone offers the opportunity to train many body parts very gentle on the joints, without going into danger, on the water to capsize and thus in need.

Another alternative is to design the rowing bike as a fun device. By technically simple designs, alternative tires, another possible drive (replacement of the tension member, for example by an element that is moved back and forth, or a crank comparable to a hand bike, the rowing bike for everyone can be an interesting and fun means of transportation.

LIST OF REFERENCE NUMBERS

1

 Rowing bike

2

 supporting frame

3

 longitudinal beams

4

 crossbeam

5

 Seat

6

 carriage

7

 rear end

8th

 rear wheel

9

 front area

10

 front wheels

11

 tension element

12

 arrow

13

 support element

14

 pull chain

15

 handle

16

 transmission

17

 brake

18

 brake handle

19

 braking element

21

 foot support

25

 joint element

26

 steering lever

27

 arrow

28a, 28b

 turnbuckles

29

 knuckle arm

30

 force member

31

 track axis

32

 axis of rotation

Claims (6)

Rowing bicycle, consisting of a longitudinal and a cross member, wherein the cross member with two front wheels forms the steerable front axle and the longitudinal member comprises the rear axle driven by reaction forces with a rear wheel, and a seat which is arranged on the longitudinal member, characterized in that the Side members ( 3 ) vertically rotatable about a rotation axis ( 32 ) to the cross member ( 4 ) is arranged, wherein the axis of rotation ( 32 ) in the longitudinal extent of the longitudinal member ( 3 ), the seat ( 5 ) is designed as a rolling seat and on the longitudinal member ( 3 ) in the longitudinal extent of the longitudinal member ( 3 ) is the reaction force on the rear wheel ( 8th ) via a force element ( 30 ) carried out with a transmission ( 16 ) and the latter in turn with the rear wheel ( 8th ) is coupled. Rowing bicycle according to claim 1, characterized in that the force element ( 30 ) a tension element ( 11 ) and the tension element ( 11 ) a train chain ( 14 ). Rowing bicycle according to one of the preceding claims, characterized in that the free end of the force element ( 30 ) a handle ( 15 ) having. Ruderfahrrad claim 2, characterized in that on the rear wheel ( 8th ) opposite side of the longitudinal member ( 3 ) a support element ( 13 ), which extends away from the side member, such that the over the support member ( 13 ) guided tension element ( 11 ) from the seat ( 5 ) is spaced. Rowing bicycle according to claim 1, characterized in that the axis of rotation ( 32 ) by a joint element ( 25 ) whose rotational degree of freedom is restricted. Steering bicycle according to claim 5, characterized in that the joint element ( 25 ) comprises a damping element.

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