KR20180127077A - Electronic Control Transmission for Bicycle - Google Patents

Abstract

The present invention relates to an electronic control transmission for a bicycle, capable of enhancing convenience of a rider. According to the present invention, the electronic control transmission for a bicycle includes a structure of one electronic motor, a worm (22), and a worm gear (23), has a driving side transmission unit (30) and a rear wheel side transmission unit (60), which are operated by a clutch to connect and disconnect power, disposed on both left and right sides with a main shaft (27) disposed therebetween, includes a configuration of a first right clutch (32, 33) disposed in the driving side transmission unit (30), and includes a configuration of a second right clutch (62, 63) disposed in the rear wheel side transmission unit (60), such that gear shifting to high and low speeds is performed when the electric motor (21) rotates clockwise/anticlockwise. To realize correct gear shifting together with deceleration, predetermined gear shifting is performed by a structure of a driving side worm A (51) and worm gear A (52), a structure of a rear wheel side worm B (71) and worm gear B (72), magnetic force of a selected electromagnet (47, 67), and clockwise or anticlockwise rotation of the worm (51, 71), the worm gear (52, 72), and a transmission pulley (53, 73), which are selected by operation of the clutch (33, 63) selected by a rotating circular protrusion (39) and a lever (35, 37).

Description

Bicycle Electronic Control Transmission {Electronic Control Transmission for Bicycle}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic control type transmission for a bicycle which can control a speed according to a tilt of a road, a driving habit, etc., and more particularly, to a transmission having two shift pulleys A sprocket transmission provided in each of a drive sprocket having a multi-stage structure and a rear sprocket can be operated, and a shift is made automatically according to the road surface inclination, thereby making it possible to easily and simply change the shift operation, To an electronically controlled transmission.

Generally, a bicycle is constructed such that a sprocket having a different size is axially installed on a pedal shaft and a rotary shaft of a rear wheel provided in the main body, and a power is transmitted to the bicycle through a chain. When a user rotates the foot pedal, a drive sprocket The chain is rotated to rotate the rear wheel sprocket, which is provided on the rotary shaft of the rear wheel, so that the rear wheel is rotated to cause the main body to travel forward.

These bikes vary in speed depending on the diameter of the rear sprocket and the driving sprocket. The larger the ratio between the rear sprocket and the driving sprocket, the faster the rider can travel.

Accordingly, in recent years, a variable-speed bike has been developed in which the rear sprocket and the drive sprocket are configured in multiple stages, respectively, and a multi-stage shift is possible according to the combination of the sprockets.

In such a speed change bicycle, a shift lever provided on both handles is operated so that the chain is engaged with any one of the multi-stage structure rear sprockets and the multi-stage structure drive sprockets, respectively.

Accordingly, the users of the change-speed bicycle operate the shift lever provided on both the side handles so that the shift is performed at a high speed on a flat ground and the shift is performed at a low speed on an uphill road.

However, among novice users, it is difficult to operate the shift lever during operation because it is difficult for a novice or a woman to drive a bicycle.

In addition, it is necessary to operate the shift lever naturally according to the road condition or the necessity. However, in the case of a novice or a woman, since the shift lever can not be operated correctly, there is a disadvantage that the vehicle runs at a lower speed than necessary.

In view of this, a device has been developed to automatically perform the shifting according to the inclination of the road, but in this case, the structure of the transmission becomes very complicated and the existing transmission can not be utilized.

In Patent Document 1, a shift lever operated by a hand in a gear bike is installed in a housing attached to a rear wheel frame of a bicycle, and a loosening machine for shifting the rear wheel shaft gear and the drive shaft gear at a time difference is provided at the end of the shift lever The present invention describes an automatic transmission of a multi-stage gear bicycle in which a shift is made using a tension and a length of a chain that varies according to the load of the running state and the magnitude of the acceleration force even when the driver does not operate the shift separately.

Patent Document 2 discloses a bicycle comprising a chain transmission for transmitting a position of a driving chain of a bicycle; A shift switch for generating a drive signal of the chain transmission; A signal distributor for transmitting a drive signal between the chain transmission and the shift switch; A battery for driving the chain transmission; A GPS capable of receiving satellite signals; And a control device for driving the transmission in an automatic mode for driving the chain transmission in a manual mode for driving the chain transmission by the operation of the shift switch or for sensing the tilt angle of the ground from the GPS and driving the chain transmission to the set gear ratio range according to the tilt angle Of the present invention.

Korean Patent Publication No. 10-2007-0115397 (2007.12.06) Korean Patent Publication No. 10-2015-0011979 (Feb.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a sprocket transmission device capable of operating a sprocket transmission provided in a multi-stage drive sprocket and a rear sprocket, respectively, while two shift pulleys rotate in a forward direction or a reverse direction, The present invention provides a bicycle electronic control transmission capable of increasing the convenience of the driver by making the shifting automatically and automatically according to the degree of inclination.

The bicycle electronic control transmission of the present invention is characterized in that one main shaft is provided in one electric motor and two clutches are provided on both sides of the electric motor so as to simplify the control by controlling the two transmission portions (drive side transmission portion and rear wheel side transmission portion).

In addition, the present invention enables semiautomatic shifting or automatic shifting simply by adding a part of the structure without changing the structure of the transmission mechanism provided in the conventional speed change bicycle, thereby making it possible to continuously utilize the existing transmission mechanism without disposing the existing transmission mechanism. A control transmission is provided.

According to an aspect of the present invention, there is provided a bicycle electronic control transmission including a drive sprocket transmission for moving a chain to any one of a plurality of drive sprockets provided on a drive shaft of a bicycle, a plurality of rear wheel sprockets A rear wheel side wire for operating the rear wheel sprocket transmission; and a drive side wire for operating the drive sprocket transmission, the electronic control device comprising:

The drive-side speed change portion and the rear wheel-side speed change portion are used for gear-shifting the drive sprocket transmission and the rear wheel sprocket transmission, respectively, by using a single worm gear and worm gears using one electric motor, The A-worm and the A-worm gear, and the rear-wheel-side speed changing portion controls the B-worm and the B-worm gear to rotate and stop, respectively.

Usually, the driving sprocket is composed of two stages and the rear wheel sprocket is composed of 7-11 stages.

The rear wheel side gear shift is automatically shifted by the tilt sensor in the control section according to the inclination of the road.

The drive-side speed changing portion and the rear wheel-side speed changing portion constitute a clutch to transmit or cut power, respectively, and operate the clutch by the lever and the circular projection.

When the drive side transmission portion and the rear wheel side transmission portion are properly shifted, the A worm and the B worm prevent reverse rotation of the A worm gear and the B worm gear, so that proper and stable gear shifting can be performed.

According to the bicycle electronic control transmission according to the present invention, as the magnetic force is generated in any one of the pair of electromagnets, when the lever is pulled, the rotational force of the circular protrusion rotating no-load pushes the moving lever, The speed of the accelerator or the deceleration is shifted by winding or loosening the drive-side wire or the rear-wheel-side wire while slowly rotating so that it is not necessary for the driver to operate the shift lever for shifting so that the shifting operation is easy and the convenience of the driver is increased .

Since the structure of the drive sprocket and the rear sprocket is opposite to each other, the bicycle is shifted to a low speed by releasing the drive side wire from which the drive sprocket transmission is pulled, and conversely, the rear wheel sprocket transmission is shifted at low speed by pulling the rear- When shifting from high speed to low speed, the rear sprocket transmission first operates at a low speed and later the drive sprocket transmission is shifted to low speed. On the other hand, when shifting from low speed to high speed, the drive sprocket transmission first operates at high speed,

As the sprocket transmission shifts gears at a high speed, there is an effect that the driver can maintain the power of turning the pedal for a long time.

In addition, since a certain delay time is provided to prevent gear shifting which is too sensitive in a short uneven portion of the road, the driver can be prevented from being disturbed by frequent shifting, and power consumption can be reduced.

In addition, since the shift is automatically performed in accordance with the road surface inclination detected by the tilt sensor, the vehicle can be shifted to a high speed ratio at a high speed in a flat area and can be driven at a high speed. .

In addition, the present invention is advantageous in that manufacturing cost can be reduced by configuring a semi-automatic system capable of shifting to a high speed or a low speed only by pressing the acceleration switch and the deceleration switch.

In addition, since the components other than the shift lever among various transmission gears applied to a general shift bicycle can be used as they are, the additional cost is minimized.

1 is a schematic view of a bicycle in which a gear shift operation can be performed by a button on a handle and a gear shift structure by an electric motor is provided on a lower end of a crankshaft;
Fig. 2 is a cross-sectional view in which two clutches, two pairs of worms, and two shift pulleys are formed on one electric motor shaft,
Fig. 3 is a perspective view showing a state in which two clutches, two pairs of worms, and two shift pulleys are formed on one electric motor shaft,

Hereinafter, a bicycle electronic control transmission according to the present invention will be described in detail with reference to the accompanying drawings.

In the drawings, like reference numerals are used to refer to like elements throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

A passenger car can automatically shift gears while controlling the supply of fuel to determine the power and speed ratio to run at the TCU;

Since the human leg is the engine of the bicycle, the gear ratio of the drive side gear shift and the rear wheel side gear shift can be changed automatically and semiautomatically in gear shift, In practice,

In the automatic mode, the tilt measurement of the road is sometimes reset.

The bicycle electronic control transmission according to the present invention comprises a pair of worms and worm gears constituted by a set of mechanical power components except for the speed reducer of the motor,

Further, the worm and the worm gear are formed on the left and right sides to prevent the wire from being fluidized while appropriately shifting gears, thereby realizing a gear shift with a simple structure.

Also, in order to prevent the confusion of the gear shift of the irregular road, the delay time for a few seconds is set and stable gear change is performed.

The electric motor (21) can be implemented as semi-automatic gear shifting by reverse rotation and forward rotation.

Preferably, the gear transmission including the electric motor is mounted on the lower end of the crankshaft, and the button and the boot are set on the bicycle handle.

2 and 3, when the slope of the road is transmitted to the measurement control section (Patent Registration No. 10-1699811, Jan. 19, 2017), the DC motor 21 and the electromagnet The worm 22, the worm gear 23, and the main shaft 27 are rotated by the first deceleration; The rotating main shaft 27 and the circular protrusions 39 and the crutch gears 31 and 61 having irregularities in their planar surfaces are idly rotated;

When a magnetic force is generated in one of the electromagnets 47 and 67, the levers 37 and 57 are pulled by the magnetic force and the slide bars 34 and 64 come into close contact with each other by the rotating circular protrusions 39, One of the worm gears 51 and 71 and the worm gears 52 and 72 is operated so that one of the change-speed pulleys 53 and 73 is decelerated, The multi-stage sensor 74 cuts off power from the control unit (not shown) by the stopper 75.

When the gear is shifted appropriately, the worm gears 52 and 72 including the stopping of the electric motor and the change-speed pulleys 53 and 73 are fixed by the walls 51 and 71, respectively.

The worms and the worm gears of the pair of left and right worm gears are decelerated and the transmission wires 56 and 76 are wound and unwound at a proper speed of the variable speed pulleys 53 and 73 and stopped.

In other words, when the right and left worms and the worm gears are decelerated and the gears are shifted appropriately, the speed change pulleys 53 and 73 and the speed change wires 56 and 76 are shifted to the right gears and stopped in place without fluidity.

In order for the driver's foot legs to last a long time with less force, in the operating sequence of the left and right claws 33,

When the mode is set to the low speed mode, the left 2 crutch 63 is operated in the priority order, the rear wheel side speed change portion 60 first shifts to the low speed mode, and then the crutch is released;

The right-side one crank 33 operates in the subordinate position to shift the drive-side transmission portion 30 to the low-speed mode.

When the next high speed mode is set, the right side 1 crutch 33 is activated, and the drive side transmission portion 30 first shifts to the high speed mode and the clutch is released.

The left two-crank 63 is operated at the rear position to shift the rear-wheel speed-change portion 60 to the high-speed mode.

In order to simplify the system, the rear wheel side transmission portion 60 is automatically shifted by the tilt sensor 74, and the drive-side speed change portion 30 formed by the 2-3 steps is operated by using the drive side button 10 of the handle It is preferable that the driver arbitrarily adjusts it.

The following is a detailed description of a gear shifting structure

The state in which the gear change ratios of the drive-side transmission portion 30 and the rear wheel side speed change portion 60 are in the state;

While riding in the high-speed mode,

In the uphill road, the slope sensor recognizes the tilt value in the control unit, and the left two crutches 63 operate.

More specifically, when the electric motor 21 is rotated in the low speed mode on the ascending path and a magnetic force is generated in the electromagnet 67, the lever 57 is pushed to the left, The lever 57 is in close contact;

When the lever 57 is in close contact with the slide bar 64, the slide bar 64 is closely contacted, and the slide 65 is rotated so that the two claws 63 come into close contact with the claws 62,

When the cranking operation is performed, the rotation of the rotary shaft and the B-worm 71 causes the B-side shifting roots 73 integrally formed with the B-worm gear 72 to slowly rotate and pull the rear-wheel- The gear shift corresponding to an appropriate gear ratio is achieved at this low speed;

When an appropriate gear shift is made and the stopper 75 coincides with the gear ratio number of the multi-stage sensor 74, the power of the generator (not shown) is cut off and the electric motor 21 stops.

On the next flat or downhill

When the slope of the road is measured by the tilt sensor in the control unit and applied to the control unit, the electric power is simultaneously supplied to the B electromagnet 67 while the electric motor 21 is reversely rotated (reverse rotation of the uphill) Is pushed by the rotating circular protrusion 39;

The two cluts 62 and 63 are operated by the sliding of the lever 57 and the slide bar 64 by the slide 65 and the B worm 71 and the B worm gear 72 are operated by the electric motor 21, The B-speed change roots 73 integrally formed with the B-worm gear 72 are in a high-speed mode while slowly releasing the rear wheel-side wire 76. [

When the mode is set to the high speed mode, gear shifting is performed in accordance with the degree of inclination of the road, and the stopper 75 cuts off the power from the booster according to the gear ratio of the multi-stage sensor 74. The electric motor 21 is rotated forward at the same time and the electric power is supplied to the B electromagnet 67 by the magnetic force to cause the B-worm 71 and the B-worm gear 72 to move in the two- And the rear wheel side transmission wire 76 of the B shift pulley 73 is wound to perform gear shifting at a low speed;

On the descending road, the electric motor 21 rotates in the reverse direction, and the two cranks 62 and 63 are simultaneously operated, and the gear shift is performed at a high speed.

The concept of forward rotation and reverse rotation of the electric motor may be reversed.

The present invention is characterized by simplifying the gear shifting structure by controlling one clutch 33 and two clutches 63 to one electric motor 21, respectively.

10: drive side shift button 12: drive side transmission 13: rear wheel side transmission
14, a drive sprocket 15, a rear wheel sprocket 16,
17, a frame 20, a rear wheel side adjustment button 21,
22, a worm 23, a worm gear 27,
30: a drive side transmission portion 31; a sliding crutch gear 32;
33; 1 crutch 34; slide bar 35; slide
36, a slide bar shaft 37, a lever 38,
39, a circular protrusion 40, a rotary switch 41,
47, A electromagnet 51, A worm 52, A worm gear
53: A-speed pulley 56: drive side wire 57: lever
60: rear wheel side speed changing portion 61: sliding crutch gear 62:
63; 2 Clutch 64; Slide bar 65; Slide
66, a slide bar shaft 67, a B electromagnet 68, a lever shaft
71, B-worm 72, B-worm gear 73, B-shift pulley
74, a multi-stage sensor 75, a stopper 76,

Claims (2)

An electric motor (21) for performing reverse rotation and forward rotation on the output of the generator in the transmission of the bicycle;
A drive-side speed change portion (30) and a rear wheel side speed change portion (60) for selectively transmitting power to either the electric motor or both sides of the main shaft (27);
A one-crank 33 and two-crutch 63 for opening and closing the power to the drive-side transmission portion 30 and the rear-wheel-side speed portion 60 to be selected;
A worm and a worm gear rotating together with deceleration when the crutch is operated;
And a speed change pulley (53, 73) which is integrated with the worm gear to wind or unwind the speed change wire. The bicycle electronic control transmission according to claim 1, wherein the bicycle electronic control transmission includes a drive side button (10) for shifting gears of the drive side transmission portion (30) at a low speed or at a high speed;
An electric motor 21 for gear-shifting to a high speed or a low speed while reversing or forward rotation according to the selection of the drive-side button 10, and an A electromagnet 47 for generating a magnetic force;
An electric motor (21) for performing a reverse rotation and a forward rotation by a tilt sensor for measuring a tilt according to an inclination of a road and a control unit for outputting power of the trolley by an application of the tilt sensor;
A B electromagnet (67) generating a magnetic force by supplying power to the electric motor and supplying power to the electric motor;
A second crutch 63 that rotates because the circular protrusion 39 that rotates is in close contact with the lever 57 pulled by the magnetic force of the B electromagnet 67;
A B-worm 71 and a B-worm gear 72 rotating while decelerating by the crushing operation;
The B-worm 71 and the B-worm gear 72, which are shifted to a desired gear and stopped in place without fluidity at the time of stopping;
A B-shift pulley 73 integrally formed with the B-worm gear 72 and gear-shifting at a low speed and at a high speed while winding or releasing the rear wheel side wire 76;
And a multi-stage sensor (74) and a stopper (75) that cut off the power to the electric motor when the degree of inclination of the road and the gear ratio of the rear wheel are matched with the gear shift.

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