BG62127B1 - Bicycle driving device - Google Patents

Abstract

The device is designed for bicycle transmission with manualand foot driving. It is compact and has better convenience inriding. It consists of a lever system (7) mounted on the bicyclehandle-bar (2) connected to a handle (3) and to the front drivingwheel (4) by means of a connecting rod (2) and rests on asupporting frame (1) and to the rear driving wheel (5). Twohandles (3) pivotly connected to arms (15) of the lever system (9)ending by the crankshaft-connecting rod mechanisms with twoconnecting rods (16) connected by elbows (12) having outlet axles(13) are pivotly connected to the handle-bar (2). The latter (theoutlet axles) are connected to wheel (4) by means of a freewhellmotion union (14). Longitudinal holes having guides (10) fitted inthem are machined in two-side extensions (8) of the handle-bar (2)pivotly connected to their respective connecting rods (16) and toarms (15). The one-direction or different-direction swingingmotion of the handles (3) is converted into rotative motion of theoutlet axle (13).2 claims, 7 figures

Description

Technical field

The invention relates to manual and foot-operated bicycle transmission.

BACKGROUND OF THE INVENTION

A bicycle actuator is known, comprising a steering system mounted on a fork connected to a handle and a front motor wheel by a reel. To the steering fork is connected a hinge block of lever elements with a firmly attached handle and a hinged reel. The reel is connected to a sprocket of a chain gear, the other of which is attached to the front drive wheel.

The swinging movement of the block with the handle, in the plane of the front motor wheel, is converted into rotational motion of the wheel / 1 /.

The disadvantage of this device is the increased front gauge of the bike, which deteriorates the design. Another disadvantage is the difficulty of driving due to the use of a single reel, requiring unidirectional rotation to match the propulsion. The direction of the rocking motion of the drive block causes a twist. The disadvantage is also the big difference in the drive unit for the front and rear motor wheels, which interferes with unification.

It is an object of the invention to provide a bicycle propulsion device with increased compactness and convenience for steering, allowing for uniform foot and hand propulsion.

SUMMARY OF THE INVENTION

The task is solved by a bicycle actuator comprising a lever mounted on the steering fork connected to a handle and a front motor wheel by a reel. According to the invention, two handles are pivotally connected to the steering fork, which are pivotally connected to the arms of a lever system ending with a crank mechanism with two reels. The reels are connected via elbows with an output axle connected to the front drive wheel by a freewheel sleeve. Longitudinal openings are formed in the bilateral extensions of the steering fork with the guides located therein, pivotally connected to the respective reels and to the arms of the lever system. The one-way or multi-way swinging movement of the handle is converted into a rotary movement on the output axis.

Another gear of the aforementioned type is mounted on the bicycle carrier frame, driven by the rocking movement of the pedals driving the arms, with the arrangement of the lever system 9 to which the rear wheel drive drive wheel is connected.

An advantage of the device according to the invention is its compact construction and the increased convenience of driving the front and rear motor wheels, which can be carried out separately. Another advantage is the increased unification of the foot and manual drive and the more efficient use of the driver's foot efforts when swinging the pedals (compared to rotating the known device).

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front view of the device;

Figure 2 is a section through AA of Figure 1;

Figure 3 is a front view of the lever system with a double lever;

FIG. 4 is a view in B of FIG. I when using additional gear;

Figure 5 is a side view of the drive of the rear motor wheel;

Figure 6 is a view of the C pedal of Figure 5;

Figure 7 is a view of the C pedal in another embodiment.

Exemplary embodiments of the invention

The drive unit is mounted on a forked carrier 1, fork 2, with grips 3. The frame 1 is mounted in the front 4 and rear 5 motor wheels. The rear motor wheel 5 is connected by a freewheel sleeve 6 to the rear chain drive 7. The grips 3 are pivotally connected to the steering fork 2 and to the arms 15 of the lever system 9, ending with a crank mechanism lie two reels 16. The reels 16 are connected by mutually defaced knees 12 with an output shaft 13. The output axis 13 is connected to the front motor wheel 4 by a freewheel sleeve 14. Longitudinal openings 8 are arranged in the steering wheel forks 2 with longitudinal openings 10 arranged therein. respectively contractors connecting rods 16 and the arms 15. The pivotal axes of the connecting rods 16 and arms 15 are crossed. The knees 12 are fixedly connected to the output axis 13. Alternatively, the two grips 3 are fixedly connected to each other.

In the exemplary embodiment shown in Figure 3, the handles 3 and the guides 10 are connected by a conditionally split arm 15 into two sections, which are pivotally connected by a two-arm lever 18, which is mounted in its middle section in the steering fork 2.

In the exemplary embodiment shown in Figure 4, the output axis 13 is indirectly connected to the front drive wheel 4 via a front sprocket 19 whose input unit is the output axis 13 of the crank mechanism 11.

Figure 5 shows the mounting frame 1 of another gearbox 20 of the upper type, driven by the rocking movement of the pedals 17 connected to the driving arms 15. In this arrangement of the lever system 9, a drive wheel 21 is connected to the output axis 13. of the rear sprocket 7. The pedals 17 have transverse rounds 22 on the upper surface of their steps 23 (Fig. 6), and optionally their steps 23 are pivotally connected to the pedal carrier 24 (Fig. 7).

Use of the invention

The drive of the front motor wheel 4 is actuated by the unidirectional or multi-directional rocking movement of the handles 3, which is converted into rotary movement of the output axis 13 by means of the lever system 9.

In the exemplary embodiment of Figure 3, there is an intermediate two-arm lever 18 used for the shaking motion of the grips 3 and for modifying the force on the driver 10.

The gear ratio of the device is varied using a gear 19 mounted between the output axis 13 and the front drive wheel 4.

In the exemplary embodiment of Figure 5, the rear motor wheel 5 is actuated by the rocking movement of the pedals 17 via the driver's feet, associated with a more efficient use of the force of the legs. For convenience, the upper surface of the pedals 17 of the pedals 17 is rounded, and optionally (Fig. 7) the hinges 23 are hinged on the pedestal 24 of the pedal 17.

The design allows the bike to be driven both separately - with only the front 4 or only with the rear 5-wheel, and combined - with both motor wheels 4 and 5. The convenience of driving when driving with the front motor wheel 4 is increased as a result of the unidirectional twin reel rotation 16, which does not require rear drive alignment, given the plane of motion of the handles 3 and the convenience of turning / fork 2 / with them, as well as the convenience of driving with the rear wheel 5 h h swing pedal 17.

Claims (2)

Claims 1. A bicycle actuator comprising a steering system mounted on a fork linked to a handle and a front wheel by means of a reel, which steering axle is mounted in a supporting frame, characterized in that two are pivotally connected to the steering fork (2). handles / 3 / which are pivotally connected to the arms / 15 / by the lever system / 9 /, ending with a crank mechanism / 11 /, with two reels / 16 / connected via the knee / 12 /, with output axles / 13 / connected to the front drive wheel / 4 / via a freewheel sleeve / 14 /, as longitudinal openings with guides (10) connected to them with hinges (16) and arms (15) to form a one-way or two-way rocking motion are formed in the bilateral extensions / 8 / of the steering fork / 2 /. the handles / 3 / in a rotary motion on the output axis / 13 /. Bicycle actuator according to claim 1, characterized in that a further gear (20) of said type is mounted to the frame (1), driven by the rocking movement of pedals (17) attached to the actuating arms (15). /, wherein the lever system / 9 / has an output axis / 13 / connected to a drive wheel / 21 / of a chain gear / 7, 19 /.