RU162692U1 - REMOVABLE DEVICE FOR QUALITATIVE MOVEMENT OF PEDAL KNOTS OF BICYCLES - Google Patents

Abstract

A removable device for swinging the pedal components of bicycles, consisting of a gearbox connected to the pedal levers with integrated one-way clutches, characterized in that the removable device for swinging the pedal levers additionally contains two identical sprockets on the axis of simultaneous swing of each pedal lever around the axis of rotation of the drive shaft bicycles connected in pairs by two bicycle chains with tension springs connecting both ends of the chain with sprockets mounted under At night on each outer end of the reversible gear shafts, which are parallel to the rocking axis of rotation of the pedal axis, wherein the upper and lower sprockets rotate in pairs in one plane perpendicular to the axis of rotation of the drive shaft of the bicycle.

Description

The claimed utility model relates to bicycles with a muscular drive, in particular to a removable device for rocking the pedal components of bicycles.

In general, a bicycle consists of a frame, front and rear wheels, and a pedal assembly between them. However, some bicycles of the existing design contain an additional device that allows you to make oscillatory movements when pedaling with the movement of the pedals up and down from about 15 to 150 degrees instead of rotating 360 degrees. The driving force is transmitted to the rear wheel by shifting existing gears to control travel speed and torque. This eliminates the "dead spots", which saves up to 30% of the work of the legs of the cyclist in comparison with their usual circular motion.

The advantage and scope of bicycles with rocking movements of the pedals are described in detail in an article by Doctor of Technical Sciences, Professor A. Kropp: “How to improve a bicycle?” In this article in Fig. 4 shows a cross section of the proposed device, taken as an analogue (link from the Internet with the publication date January 6, 2014).

In this figure are indicated:

- shaft;

- a gear wheel, which is engaged with the wheel on the pedal sleeve 5;

- housing;

- 10 internal clips of overrunning couplings;

11 and 12 bushings on which the right and left pedal levers are fixed (positions 17 and 18);

- screw;

- driven clips of overrunning clutches;

- conical wheels;

- a conical wheel meshed with the wheels 15.

The drive operates as follows. Pedals 17 and 18 move periodically under the influence of the feet of a cyclist. Let B, at a given moment of time, the force of the cyclist's foot acts on pedal 18. This pedal drives the sleeve 12 and then part of the overrunning clutch 14, the clutch jams and transfers rotation to part 10 and further to shaft 6, from shaft 6 to gear 7 and further on an asterisk 4 (fig. 3). The chain is driven from sprocket 4 and then the rear wheel of the bicycle is driven into rotation

At the same time, the wheel and then the left wheel 15 are driven in rotation from the right bevel wheel 15, but it rotates in the opposite direction and therefore the left overrunning clutch formed by parts 14, 9 does not jam, and the rotation through part 11 is transmitted to the pedal 17, thus the pedals move in opposite directions: pedal 18 moves down and pedal up. When the force acts on the pedal 17, the movement occurs in the same way, but only the left pedal 17 moves down, and the right - up.

Thus, it is proposed to use a complex mechanism for swinging pedal levers of non-adjustable length as the above device using up to 95% of special parts, including three bevel gears of increased accuracy, two non-standard one-way couplings, four precision ball bearings, etc. The complexity of manufacturing this device will be 10-15 times higher than the technical solution proposed in the application below. In addition, the swing axis of the pedal levers does not coincide with the swing axis of the pedal levers of the bicycle being upgraded, therefore, it is necessary to mount it 180-200 mm higher than the axis of rotation of the drive sprocket and raise the seat and steering wheel by the same amount, which will increase the center of gravity of the system and instability during movement, which is a disadvantage.

The prototype is Japan Patent JP 2001138980, published date 2001-05-22.

The muscular drive mechanism is ideal for a power-driven vehicle or vehicle simulating equipment, such as a bicycle, tricycle, can be used in a wheelchair, boat, airplane and training equipment, compact, convenient. SOLUTION: A pair of bodies of rotation and support of the body is formed by vertically provided asterisks, where a chain is installed around them for rotation. The left and right turns of the body 1, 100 are fixed on the drive shaft 15, and the chain ring 6 to which the forces are applied are installed between the body of rotation 1 and the rotation of the housing 100 on the drive shaft 15. The pedal shaft is always oriented vertically to the moving surface of the chain with the help of a holding means containing a free crankshaft to the fitting part on the frame, and an arm located in the free handle and connected to the free handle. Using a free crank bent towards the fitting part on the frame allows device miniaturization and increased rigidity and realizes a high output potential convenient with little aerodynamic drag.

The disadvantage of the prototype is the complexity of its design and the limited ability to install the drive device in bicycles with different designs of the supporting frame.

The technical result of the claimed utility model consists in eliminating the aforementioned disadvantages: simplifying the design of the aforementioned device while realizing the pedal swinging motion to reduce the complexity of their manufacture in large-scale production, increasing the simplicity and reliability in operation, if necessary, additional mounting (dismounting) on the frames of millions of ordinary bicycles, in operation.

The technical result achieved is achieved through a removable device for bicycles with a muscular drive of swinging pedal levers with built-in one-way clutches. In this case, the removable device for swinging the pedal levers is made in the form of two identical sprockets on the axis of simultaneous swinging of each pedal lever around the axis of rotation of the drive shaft of the bicycle, connected in pairs by two bicycle chains with tension springs connecting both ends of the chain, with sprockets mounted individually on each outer the end of the shafts reversible by the gearbox, the axis of rotation of which are parallel to the axis of swing of the pedals, while the upper and lower sprockets rotate in pairs in one of the planes, perp ndicular to the axis of rotation of the drive shaft of the bicycle.

In the second version of the device, on the left side of the bicycle, instead of asterisks, smooth disks are installed, connected by a flexible connection, for example, a steel cable.

The proposed device is presented in the sketches of FIG. 1 - Fig. 12, consists of two main nodes mounted on the frame 2 of the bicycle: an upgraded drive unit with pedal levers 9 and 9 *, rotating along the O1 / O1 axis (see Fig. 1 and Fig. 3) of the sprocket 8 and 8 * mounted rigidly on removable nodes on the left. and Ref. in the direction of the bicycle. (Fig. 2) and the intermediate unit 1 in the form of a single-stage gearbox for reversing the upper sprockets connected to the lower sprocket and pairwise on each side (Fig. 1) with bicycle chains C and C *. Moreover, all three axes O1 / O1, A1 / A1, A2 / A2 are parallel to each other.

The proposed utility model is presented in the drawings.

In FIG. 1 shows one of the installation options of the device in question on a 2 * bicycle frame.

Due to the fact that in many designs of the bicycle’s driving unit (Fig. 2; 3), the node 4 is tightly fixed to the drive shaft 3 with a set of working gearbox gear sprockets and 4 * pedal lever, it is removed from it and shifted to 9 * pedal lever pedal 6 *. In order to lengthen the drive shaft 3, an extension 10 is installed, both nodes are Left. and Ref. fixed rigidly with the shaft 3 through the adapter sleeve 7 inside the one-way roller clutch Set in the housing 5. Instead of the clutch 11, a ratchet mechanism can be installed. In FIG. 4 shows the locking of the pedal lever 9 with a bolt 13 after establishing its optimal length. In FIG. 5 - FIG. 10 shows typical attachment parts used when mounting the device on a bicycle: FIG. 5 - 6 shows the housing of the removable node Left. and Ref. and its cross section along AA. FIG. - 7 shows the inner adapter sleeve 7 of the clutch 11 and its cross section FIG. 8 on BB. FIG. 9 - pedal lever. Fig. 10-extension of the drive shaft 3.

The gearbox device 1 is shown in longitudinal section in FIG. 11. In the housing 14 under the cover 16 are engaged two identical gears 20, fixed with pins on the shafts 15-15 *. In the axial direction, the shafts are held by stoppers 18-18 *. Identical sprockets 8 and 8 * are installed on the outer surfaces of the shafts, which are manually moved along the grooves of the shafts 15 and 15 * to manually rotate them in the same plane with a similar sprocket on the axis of rotation of the drive shaft and connect them in pairs with a bicycle chain and lock with nuts 19.

The axes A1 / A1, A2 / A2 of the shafts 15 must be parallel to the axis O1 / O1 of the drive shaft 3. When the reduction value is 1: 1 in order to maintain the same angle of the pedals, the gear ratios of the sprockets on the right and left sides of the bicycle should be equal. It is optimal to use all newly installed four sprockets of the same diameter. In FIG. 12 shows a gearbox for a second embodiment of the device. Its difference lies in the fact that on the left (in the direction of the bicycle), instead of a pair of sprockets, a pair of smooth disks 21-21 * is installed, interconnected by a flexible connection, for example, in the form of a steel cable 23, which simplifies the installation of the device on a bicycle, with all other requirements, the cable is self-installing during rotation in the plane of rotation of the disks.

The installation of the device on a bicycle (after assembly without pedal levers 9-9 * nodes Left and Sp., Shown in Fig. 2-3 and differing from each other only in the direction of transmission of torque of the one-way roller coupling 11 to the drive shaft 3) is carried out in the following order (Fig. 1-12):

- pedal levers are removed from the bicycle, and their pedals 6 are rearranged on levers 9-9 *.

- on the shaft 3 is installed extension 10.

- node Left., transmitting the working torque when rotating counterclockwise, is mounted rigidly on the shaft 3 and fixed with a nut 12.

- is installed and fixed by screw 13 on the left. foot lever 9.

- similarly mounted on the extension cord 10 node Sp., transmitting the operating torque to the shaft 3 when rotating clockwise.

- node 1 (gear) is installed on the frame 2 of the bicycle in compliance with the parallelism of the axes Al-Al, A2-A2 of the axis of rotation of the shaft 3 O1 / O1 and is fixed with a clamp 17 (Fig. 11-12)

- sprockets 8-8, * located on the shafts 15-15 * of the gearbox, are installed in pairs strictly in the same plane as sprockets 8-8, * located on the shaft 3 and are fixed rigidly with nuts 19-19 *.

- having installed (Fig. 1) the left pedal lever 9 in the upper position all the way up, the bicycle chain C is installed so that the lower end of the tension tension spring Pr, connecting both ends of the chain, located at the rear or front in the direction of travel, is at a distance from the nearest the tooth of the lower sprocket 8 is at least 3 mm. The tension spring allows you to install the chain on an asterisk or disk without additional efforts and tools, both when installing the device as a whole on the frame, and in case of its jumping off. Lower the lever to the lower position.

- similarly install the bicycle chain C *.

After the final installation of the above parts and assemblies, the proposed device works as follows (see Fig. 1): when the left pedal 6 moves under the influence of the user force P, the left gear wheel spins counterclockwise and simultaneously rotates (power P) the right gear wheel clockwise arrow, at the same time it raises (force P) when the left chain moves along the arrow q, the right pedal 6 * through the one-way rotation clutch up to the hard stop Cn * when the chain C * moves along the arrow d *. Then the process is periodically repeated, setting the bike in motion.

Thus, the analysis and testing of the prototype confirm the technical result of the claimed utility model: simplification of the design of the above device when implementing the rocking motion of the pedals to reduce the complexity of their manufacture in large-scale production, increasing simplicity and reliability in operation if necessary, their additional installation (dismantling) on the frames of millions of ordinary bicycles in use.

The main consumers of the device will be:

1 - Owners of bicycles for traveling over long distances over rough terrain with a physical cost savings of up to 30%.

2 - patients after operations on the knee joints, including the use of a modernized bicycle as a mobile simulator.

3 - cycle rickshaws when transporting tourists,

4 - when organizing rental locations for upgraded tricycles for shopping on the central streets of large cities where parking is prohibited,

Also, the proposed device will create an environmentally friendly mode of transport and can be used in a wheelchair, boat, training equipment, compact, convenient to use.

The utility model is new, since the entire set of features is not known from the prior art described in the corresponding section of the description, as well as industrially applicable in the field of technology related to the construction of toys with internal illumination and musical accompaniment, can be used for entertainment and / or development of a child aged three years or older.

Claims (1)

A removable device for swinging the pedal components of bicycles, consisting of a gearbox connected to the pedal levers with integrated one-way clutches, characterized in that the removable device for swinging the pedal levers additionally contains two identical sprockets on the axis of simultaneous swing of each pedal lever around the axis of rotation of the drive shaft bicycles connected in pairs by two bicycle chains with tension springs connecting both ends of the chain with sprockets mounted under At night on each outer end of the reversible gear shafts, which are parallel to the rocking axis of rotation of the pedal axis, wherein the upper and lower sprockets rotate in pairs in one plane perpendicular to the axis of rotation of the drive shaft of the bicycle.

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