DE202008002610U1 - Power saving device for a motor and pedal operated bicycle - Google Patents

Abstract

A power-saving device for a motor- and pedal-operated bicycle, comprising a motor (60) having a motor spindle (601) connected to a drive wheel (601) and a bottom bracket shaft (10) connected at both ends to left and right a right pedal crank (11, 12) is connected, characterized in that
- The bottom bracket (10) in the peripheral surface at least one positioning hole (101);
Around the bottom bracket shaft (10) a first bush (20) is placed, which can be turned relative to the bottom bracket (10), an interior (201) with helical teeth (202), at one end with a sprocket (203) for the Chain (A) is connected and in the peripheral surface has at least one positioning hole (204);
- A spring element (301) and a first positioning pin (30) are received in the positioning hole (101) of the bottom bracket (10), wherein the first positioning pin (30) in the helical teeth (202) of the first sleeve (20) can engage when the Bottom bracket shaft (10) turned ...

Description

Technical field of the invention

The The present invention relates to a force-saving device for a motor and pedal operated Bicycle, the pedaling force for save the bike.

State of the art

One Motor and pedal operated bicycle has an engine and a transmission (such as a gear, sprocket and chain), making the bike both with the engine and with the pedals can be driven. The engine and the transmission are with the Rotary elements (such as the front wheel axle and the rear wheel axle) of the bicycle coupled. When the engine is running, the cyclist does not have to pedal. In pedal operation, the cyclist can pedal again.

There the engine and transmission are coupled with the rotary elements of the bicycle are the cyclist when pedaling the friction force between overcome the engine, the transmission and the rotary elements of the bicycle, so that the pedaling is very forceful.

at a conventional one Bicycle with multiple sprockets, which have a different number of teeth, the gait can be switched by a gearshift device. The above motor and pedal operated bicycle, however, does not allow gear change.

Out For this reason, the inventor has developed the present invention.

Object of the invention

Of the present invention is based on the object, a power saving device for a Motor and pedal operated bicycle to provide the pedaling power for the Bike can save.

These Task becomes according to claim 1 by a force-saving device according to the invention for a motor and pedal-operated bike solved, taking a first socket is placed around the bottom bracket shaft, which has an interior space with helical teeth, in which can engage a first positioning pin of the bottom bracket, and connected at one end with a sprocket, wherein around the first socket is placed a second socket, which has an interior having helical teeth, directed in the opposite direction to the helical teeth of the first jack are and engage in a second positioning of the first socket can, and is connected to a driven wheel on one side, the is engaged with the drive wheel of the motor. In engine operation is the torque of the engine over transferring the second bushing to the first bushing and the sprocket, the bottom bracket and left and right cranks not be turned. In pedal operation, the torque of the left and right crank on the bottom bracket the first socket and the sprocket transmit, the second socket and the motor spindle can not be rotated, so pedaling power can be saved.

The Driving force of the engine and the bottom bracket is about the first socket transferred to the sprocket. Therefore, you can provided several sprockets be who have a different number of teeth and with a Gear shift device work together. Both by the engine as well by the pedaling force for the bottom bracket can be performed a gear shift.

Brief description of the drawings

1 is a longitudinal sectional view of the invention,

2 is a cross-sectional view of the invention,

3 is an exploded view of the invention,

4 is a cross-sectional view of the invention in engine operation,

5 is a cross-sectional view of the invention in pedal operation.

Ways to execute the invention

• – eine Tretlagerwelle 10, die in der Umfangsfläche mindestens ein Positionierloch 101 aufweist und an den beiden Enden mit einer linken und einer rechten Tretkurbel 11, 12 verbunden ist, die an einem Ende jeweils mit einem Pedal (nicht dargestellt) verbunden sind;
• – eine erste Buchse 20, die um die Tretlagerwelle 10 gelegt ist, gegenüber dieser gedreht werden kann, einen Innenraum 201 mit Schrägzähnen 202 aufweist, an einem Ende mit einem Kettenrad 203 für die Kette A verbunden ist, um die Kraft auf das Hinterrad (nicht dargestellt) zu übertragen, und in der Umfangsfläche mindestens ein Positionierloch 204 besitzt;
• – mindestens einen ersten Positionierstift 30, der zusammen mit einem Federelement 301 im Positionierloch 101 der Tretlagerwelle 10 aufgenommen ist und in die Schrägzähne 202 der ersten Buchse 20 eingreifen kann;
• – eine zweite Buchse 40, die um die erste Buchse 20 gelegt ist, gegenüber dieser gedreht werden kann, einen Innenraum 401 mit Schrägzähnen 402 aufweist, die in entgegengesetzter Richtung zu den Schrägzähnen 202 der ersten Buchse 20 orientiert sind, und an einer Seite mit einem Abtriebsrad 403 verbunden ist;
• – mindestens einen zweiten Positionierstift 50, der zusammen mit einem Federelement 501 im Positionierloch 204 der ersten Buchse 20 aufgenommen ist und in die Schrägzähne 402 der zweiten Buchse 40 eingreifen kann; und
• – einen Motor 60, der in der Nähe des Tretlagers angeordnet ist und eine Motorspindel 601 aufweist, die mit einem Antriebsrad 602 verbunden ist, das mit dem Abtriebsrad 403 der zweiten Buchse 40 in Eingriff steht.

How out 1 . 2 and 3 a force-saving device according to the invention comprises:

• - a bottom bracket shaft 10 that in the peripheral surface at least one positioning hole 101 has and at the two ends with a left and a right crank 11 . 12 is connected, which are connected at one end to a respective pedal (not shown);
• - a first socket 20 around the bottom bracket shaft 10 is placed opposite this can be rotated, an interior 201 with helical teeth 202 has, at one end with a sprocket 203 for the chain A is connected to transmit the force to the rear wheel (not shown), and in the peripheral surface at least one positioning hole 204 has;
• - At least a first positioning pin 30 that together with a spring element 301 in the positioning hole 101 the bottom bracket shaft 10 is included and in the helical teeth 202 the first Rifle 20 can intervene;
• - a second socket 40 that around the first socket 20 is placed opposite this can be rotated, an interior 401 with helical teeth 402 facing in the opposite direction to the helical teeth 202 the first socket 20 are oriented, and on one side with a driven wheel 403 connected is;
• - At least one second positioning pin 50 that together with a spring element 501 in the positioning hole 204 the first socket 20 is included and in the helical teeth 402 the second socket 40 can intervene; and
• - a motor 60 , which is located near the bottom bracket and a motor spindle 601 that has a drive wheel 602 connected to the output gear 403 the second socket 40 engaged.

How out 4 it can be seen, the rotational force of the motor spindle 601 when the engine 60 is turned on, via the drive wheel 602 on the output gear 403 transferred, causing the second jack 40 is turned. At the same time leads the second socket 40 the first socket 20 with, because the second positioning pin 50 the first socket 20 in the helical teeth 402 the second socket 40 engages, causing the sprocket 203 on one side of the first socket 20 is rotated so that the chain A drives a rotational movement of the rear wheel. Because the helical teeth 202 the first socket 20 and the helical teeth 402 the second socket 40 oriented in opposite directions, the first positioning pin 30 the bottom bracket shaft 10 only then in the helical teeth 202 intervene when the bottom bracket shaft 10 is turned. If the first socket 20 and the sprocket 203 from the engine 60 are driven, engages the first positioning pin 30 not in the helical teeth 202 one, leaving the bottom bracket shaft 10 not rotated. Therefore, the left and the right crank 11 . 12 at the two ends of the bottom bracket shaft 10 not from the engine 60 driven.

How out 5 it can be seen, the left and the right crank 11 . 12 as well as the bottom bracket shaft 10 rotated when the pedals are kicked, causing the first positioning pin 30 in the helical teeth 202 the first socket 20 engages, leaving the first socket 20 and the sprocket 203 be turned. Therefore, the chain A can drive a rotational movement of the rear wheel. Because the helical teeth 202 the first socket and the helical teeth 402 the second socket 40 oriented in opposite directions, the second positioning pin 50 the first socket 20 not in the helical teeth 402 the second socket 40 intervene, eliminating the second socket 40 not rotated. Therefore, the driven wheel 403 , the drive wheel 602 and the motor spindle 601 not turned. The treadle only needs the sprocket 203 drive and will not by the frictional force and resistance between the motor spindle 601 , the drive wheel 602 and the second socket 40 loaded.

The driving force of the engine 60 and the bottom bracket shaft 10 will be over the first jack 20 on the sprocket 203 transfer. Therefore, several sprockets can 203 be provided, which have a different number of teeth and with a gear shift device (not shown) cooperate. Both by the engine 60 as well as by the pedaling force for the bottom bracket shaft 10 can be performed by the chain A a gear shift. In summary, it should be noted that the invention can save pedaling force and reduce the load on the engine.

A

Chain

10

bottom bracket

101

positioning

11

left crank

12

right crank

20

first Rifle

201

cavity

202

helical gear

203

Sprocket

204

positioning

30

first positioning

301

spring element

40

second Rifle

401

cavity

402

helical gear

403

output gear

50

second positioning

501

spring element

60

engine

601

motor spindle

602

drive wheel

Claims (2)

Power-saving device for a motor- and pedal-operated bicycle, the motor ( 60 ), which is a motor spindle ( 601 ) provided with a drive wheel ( 601 ) and a bottom bracket shaft ( 10 ), which at both ends with a left and a right crank ( 11 . 12 ), characterized in that - the bottom bracket shaft ( 10 ) in the peripheral surface at least one positioning hole ( 101 ) having; - around the bottom bracket shaft ( 10 ) a first socket ( 20 ), which is opposite the bottom bracket ( 10 ), an interior ( 201 ) with helical teeth ( 202 ), at one end with a sprocket ( 203 ) is connected to the chain (A) and in the peripheral surface at least one positioning hole ( 204 ); - in the positioning hole ( 101 ) of the bottom bracket shaft ( 10 ) one Spring element ( 301 ) and a first positioning pin ( 30 ), wherein the first positioning pin ( 30 ) in the helical teeth ( 202 ) of the first socket ( 20 ) can engage when the bottom bracket ( 10 ) is rotated; - around the first socket ( 20 ) a second socket ( 40 ), which is opposite the first socket ( 20 ), an interior ( 401 ) with helical teeth ( 402 ), which in the opposite direction to the helical teeth ( 202 ) of the first socket ( 20 ) are oriented, and on one side with a driven wheel ( 403 ) connected to the drive wheel ( 602 ) of the motor ( 60 ) is engaged; - in the positioning hole ( 204 ) of the first socket ( 20 ) a spring element ( 501 ) and a second positioning pin ( 50 ), the second positioning pin ( 30 ) in the helical teeth ( 402 ) of the second socket ( 40 ) can intervene when the second socket ( 40 ) is rotated. Power saving device according to claim 1, characterized by a plurality of sprockets ( 203 ), which have a different number of teeth.