DE202012006590U1 - Recumbent bike with arm and leg drive - Google Patents

Abstract

Recumbent bike with arm and leg drive, designed as a bicycle or as a three- or four-wheeled muscle-powered vehicle with a reclining sitting or lying position, equipped with a leg drive with two cranks (2, 4) that share a chainring (3) or Rotating drive wheel, characterized in that • two arm drives each with an arm crank (10, 12) each rotate a chainring (13, 24) or drive wheel, which via a chain (11, 23) or a toothed belt, the front (7) or the rear drive axle rotates, • both arm drives jointly driving a steerable drive axle, • where the arm drives are firmly connected to the fork (16) of the drive axle (7) driven and steered by them and can be pivoted by means of an arm and / or body movement, • The struts (17) holding the arm drives are designed in such a way that the arm cranks are positioned to the left and right of the center of the driver's body.

Description

The invention relates to a recumbent, which can be driven in addition to or instead of the leg drive with side of the driver existing crank arms.

State of the art

Bicycles or three or vierrädrige muscle-powered vehicles of conventional design are driven in an upright or vorgebeugtem seat on a small saddle exclusively with the legs or in addition with an auxiliary engine. The sitting position is uncomfortable and causes high air resistance while driving. The arm musculature is neither trained nor used to increase the speed.

To increase the comfort and improve the aerodynamics, the recumbent was invented. This is a bicycle or a three- or vierrädriges muscle-powered vehicle with a reclined seat or reclining position, as a bike possibly executed with additional training wheels. In addition, there are numerous inventions of bicycles or three- or vierrädrigen muscle-powered vehicles with arm and leg drive. Only recumbents with arm and leg drive avoid all mentioned in paragraph 2 disadvantages.

Some inventions of recumbents with arm and leg drive use lever drives. The disadvantage of these recumbents is the different, non-harmonious movements for arms and legs and in the lack of efficiency of the lever drive. Other recumbents use a crank drive for both legs and arms, with the driver having to move his arms above the body. The disadvantage of these wheels is the uncomfortable arm position.

Object of the invention

The object of the invention is to provide a recumbent with arm and leg drive, which ensures drive efficiency, harmonious movement and a comfortable arm position.

The object is achieved with the inventive features of the first protection claim. Advantageous developments and refinements are the subject of the dependent claims.

The recumbent invention has in addition to a known leg drive with two cranks that rotate together a chainring or drive wheel, two arm drives with one arm crank and one chainring or drive wheel. The arm drives are firmly connected to the fork of the impeller driven by them, so that can be steered with the arms. Here, the struts holding the arm drives are designed so that the arm cranks are positioned to the left and right of the driver's body center.

The recumbent invention can be configured in different variants with regard to the effect of the steering on the front or rear wheel, drive the front or rear wheel and number of front or rear wheels. The arm drives can jointly drive the front or the rear wheel and steer simultaneously. Regardless, the leg drive can drive the front or rear wheel. To these four possible variants come further by the use of training wheels on the respective non-steered wheels regardless of the leg drive and by the placement of the front or rear axle with one or two wheels regardless of which axle is steered or driven by the leg drive.

In further advantageous embodiments, the recumbent invention can be equipped with chain or hub gears, freewheel hubs and an electrically or by combustion powered auxiliary motor. The leg drive and / or the arm drives can be provided with gear shifts. The controls for circuits and brakes are preferably integrated into the handles of the arm drives, as is known from conventional bicycles with exclusive arm drive.

In further advantageous embodiments, the recumbent invention has panels for protection against weather and / or to improve the aerodynamics. These are attached to the fork and / or the frame.

• • Hohe Geschwindigkeit erreicht durch
• • Nutzung der Armkraft zusätzlich zur Beinkraft
• • effiziente Ausnutzung der Muskelkraft infolge von Kurbelantrieben für Arme und Beine
• • niedrigen Luftwiderstand infolge Liegesitz
• • Bequemes Fahren durch
• • bequeme Sitzposition infolge Liegesitz
• • bequeme Armposition infolge seitlicher Position der Armkurbeln
• • harmonische, kreisförmige Bewegungsabläufe durch Kurbelantriebe für Arme und Beine
• • Kräftigung der Armmuskulatur zusätzlich zur Beinmuskulatur durch Armantrieb

The particular advantage of the recumbent invention compared to conventional bicycles and conventional three- or vierrädrigen muscle-powered vehicles and known inventions of bicycles with arm and leg drive and of three- or vierrädrigen muscle-powered vehicles with arm and leg drive results from the side of the body center the driver's mounted armrests. By this, the recumbent invention can combine all and not just one of the following advantages:

• • High speed achieved by
• • Use of arm strength in addition to leg strength
• • efficient use of muscle power due to crank drives for arms and legs
• • low air resistance due to reclining seat
• • Comfortable driving through
• • comfortable sitting position due to reclining seat
• • comfortable arm position due to the lateral position of the crank arms
• • harmonious, circular movements by crank drives for arms and legs
• • Strengthening of the arm muscles in addition to the leg muscles by Armantrieb

example

Based on drawings, side view 1 and top view 2 , An embodiment for a two-wheel recumbent is described in detail.

The leg drive is done by using the left pedal, consisting of left foot pedal 1 together with pedal crank 2 , and over the right crank 4 the front chainring 3 is driven. Its force is achieved by means of the front drive chain 5 on the middle front pinion 22 , s. 2 , transmits and rotates the front wheel axle 7 in addition to the front wheel rim connected with spokes 6 ,

The arm drive is via a left chainring 13 and a right chainring 24 . 2 on both sides of the driver's seat 14 are mounted. The left winch handle 9 and the left hand crank arm 10 act on the left chainring 13 that's over the left drive chain 11 and the left front wheel pinion 8th the front wheel axle 7 and thus the front wheel rim 6 drives. The right arm drive is constructed like the left arm drive and also acts on the front wheel axle 7 , This is off 2 visible with right hand crank 12 , right chainring 24 , right drive chain 23 and right front pinion 21 ,

The bearing housings associated with the three chainrings are each about struts, visible in 1 strut 15 to the front chainring 3 as well as strut 17 to the left chainring 13 , with the steerer tube 16 connected. Front wheel, leg drive, left arm drive and right arm drive thus form a unit. This is over the steerer tube 16 , which is in the head tube 18 turns, with the rear wheel 20 leading frame 19 connected.

LIST OF REFERENCE NUMBERS

1

Foot pedal left

2

Pedal crank left

3

Chainring front

4

Crank right

5

Drive chain in front

6

front wheel rim

7

front axle

8th

Front sprocket left

9

Hand crank handle left

10

Hand crank left

11

Drive chain on the left

12

Hand crank on the right

13

Chainring left

14

Seat

15

Strut to the front chainring

16

Steerer tube

17

Strike to the left chainring

18

head tube

19

frame

20

rear wheel

21

Front sprocket right

22

Front sprocket middle

23

Drive chain right

24

Chainring right

Claims (9)

Recumbent with arm and leg drive, designed as a bicycle or as a three- or vierrädriges muscle-powered vehicle with a reclined sitting or lying position, equipped with a leg drive with two cranks ( 2 . 4 ), which together form a chainring ( 3 ) or drive wheel, characterized in that • two arm drives each with an arm crank ( 10 . 12 ) one chainring each ( 13 . 24 ) or drive wheel, which has a chain ( 11 . 23 ) or a toothed belt the front ( 7 ) or the rear drive axle rotates, whereby both arm drives together drive a steerable drive axle, whereby the arm drives firmly with the fork ( 16 ) driven and driven by the drive axle ( 7 ) and can be pivoted by means of an arm and / or body movement, wherein the struts holding the arm-drives ( 17 ) are designed so that the crank arms are positioned to the left and right of the driver's body center. Recumbent bike according to claim 1, characterized in that the leg drive acts on the same drive axle as the arm drives, in particular on the front drive axle, or that leg and arm drives act on different drive axles. Recumbent bike according to one of the preceding claims, characterized in that the front drive axle 1 or 2 drives wheels and / or that the rear drive axle 1 or 2 drives wheels. Recumbent bike according to one of the preceding claims, characterized in that in the embodiment as a bicycle with 2 wheels, the front or the rear wheel is provided with support wheels. Recumbent bike according to one of the preceding claims, characterized in that the drive axles are provided with freewheel. Recumbent bike according to one of the preceding claims, characterized in that the leg drive and / or or the arm drives act on the drive axles by means of chain or hub gears. Recumbent bike according to one of the preceding claims, characterized in that the controls for braking and shifting are integrated in the hand crank handles. Recumbent bike according to one of the preceding claims, characterized in that an electric or powered by combustion auxiliary engine supplements the muscle drive. Recumbent bike according to one of the preceding claims, characterized in that a panel for protection against weather and / or to improve the aerodynamics is attached to the fork and / or the frame.

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