WO2018074649A1

WO2018074649A1 - Electronic control-type bicycle derailleur

Info

Publication number: WO2018074649A1
Application number: PCT/KR2016/012895
Authority: WO
Inventors: 박민철
Original assignee: 박민철
Priority date: 2016-10-17
Filing date: 2016-11-10
Publication date: 2018-04-26
Also published as: KR101798470B1

Abstract

Disclosed according to the present invention is an electronic control-type bicycle derailleur wherein a transmission pulley for winding or releasing a rear wheel-side transmission wire and a driving-side transmission wire is located to position a crankshaft as a satellite, and when the transmission pulley is rotated in a forward or a reverse direction by a rotational force of the crankshaft according to the magnetism of a selected electromagnet, respective sprocket transmissions arranged at a driving sprocket and a rear wheel sprocket having a multi-step structure can be operated while allowing automatic transmission control according to the gradient of a road. Therefore, the electronic control-type automatic derailleur makes transmission control easy and simple, thereby increasing the convenience of a rider.

Description

Electronically controlled transmission for bicycle

The present invention relates to a transmission of the electronic control system for bicycles that can adjust the speed according to the inclination of the road, driving habits, etc. More specifically, the drive sprocket and the rear wheel sprocket of the multi-stage structure while the transmission pulley rotates in the forward or reverse direction It is possible to operate the sprocket transmissions respectively provided on the vehicle, and to automatically shift according to the road inclination, thereby simplifying the shift operation and increasing the driver's convenience. will be.

In general, the bicycle is configured to build sprockets of different sizes on the pedal shaft and the rear wheel rotation shaft provided in the main body, and to transmit power by chaining them. When the user rotates the pedal by foot, the drive sprocket built on the shaft of the pedal is By rotating the chain to rotate the chain again to rotate the rear wheel sprocket arranged on the axis of rotation of the rear wheel is a means of transportation by which the rear wheel is rotated to travel forward.

Such a bicycle has a traveling speed depending on the diameter of the rear sprocket and the driving sprocket. As the diameter ratio between the rear sprocket and the driving sprocket increases, the bicycle can be driven faster.

Accordingly, in recent years, a variable speed bicycle has been developed in which rear wheel sprockets and drive sprockets are configured in multiple stages to enable multiple speed shifts according to each sprocket combination.

In such a shifting bicycle, the shifting lever is installed on each of the two handles so that the chain is coupled to any one of the rear sprockets of the multistage structure and the driving sprocket of the multistage structure.

Accordingly, the users of the shifting bicycle are operating the shift levers respectively installed on both handles so that the shift is performed at a high speed on a flat surface and the shift is performed at a low speed on an uphill road.

However, a beginner or a female user of a bicycle has difficulty in driving the bicycle, so it is not easy to operate the shift lever while driving.

In addition, the shift lever should be naturally operated according to road conditions or needs, but for beginners and women, the shift lever may not be operated correctly, so it may travel at low speeds more than necessary even on a flat surface and have difficulty driving uphill.

In view of this, an apparatus for automatically shifting according to the inclination of the road has been developed, but in this case, the structure of the transmission becomes very complicated and there is a disadvantage in that the existing transmission cannot be utilized.

On the other hand, as a result of examining the prior art related to the transmission of the bicycle, a number of patent documents were searched, some of them are as follows.

Patent Literature 1 installs a gear shift lever operated by a hand in a gear bicycle in a housing attached to a rear frame of a bicycle, and a rear end gear and a drive shaft gear each have a stagger at the end of the shift lever. By combining, it describes an automatic transmission of a multi-stage gear bicycle that allows the shift to be made by using the tension and the length of the chain that change depending on the load and acceleration force in the driving state even if the driver does not operate the shift separately.

Patent document 2 is a chain transmission for transferring the position of the drive chain of the bicycle; A shift switch for generating a drive signal of the chain transmission; A signal distributor for transferring a drive signal between the chain transmission and the shift switch; A battery for driving the chain transmission; GPS capable of receiving satellite signals; And a control device for driving the transmission in a manual mode for driving the chain transmission by an operation of a shift switch or an automatic mode for detecting the inclination angle of the ground from a GPS and driving the chain transmission in a set gear ratio range according to the inclination angle. It describes about the transmission of the.

(Patent Document 1) Republic of Korea Patent Publication No. 10-2007-0115397 (2007.12.06)

(Patent Document 2) Republic of Korea Patent Publication No. 10-2015-0011979 (2015.02.03)

The present invention has been conceived in view of the above, it is possible to operate the sprocket transmission provided in each of the multi-stage drive sprocket and the rear wheel sprocket while the transmission pulley rotates in the forward or reverse direction, and according to the road slope It is an object of the present invention to provide an electronically controlled transmission for a bicycle that enables the shifting to be made automatically, thereby simplifying the shifting operation and increasing the convenience of the driver.

In addition, the present invention is a bicycle for allowing a semi-automatic shift or automatic shifting only by adding a partial configuration without changing the structure of the shifting mechanism installed in the existing shifting bicycle, so that it can continue to use without discarding the existing shifting mechanism. The purpose is to provide an electronically controlled transmission.

In accordance with an aspect of the present invention, there is provided an electronic control system for a bicycle, including a drive sprocket transmission for moving a chain to any one of a plurality of drive sprockets arranged on a driving shaft of a bicycle, and a plurality of gears arranged on a rear wheel shaft of a bicycle. In the transmission of the electronic control system for bicycles comprising a rear wheel sprocket transmission for moving the chain to any one of the rear wheel sprocket of the rear wheel, a rear wheel side wire for operating the rear wheel sprocket transmission, and a drive side wire for operating the drive sprocket transmission, A cam shaft on which a second gear is formed which is rotated by being engaged with the first gear formed on the driving shaft; A rear wheel side shifting unit for winding or releasing the rear wheel side wire by using a magnetic force generated by a pair of electromagnets and a rotational force of the cam shaft; A drive side transmission unit which winds or unwinds the drive side wires by using a magnetic force generated by a pair of electromagnets and the rotational force of the cam shaft; And a power control unit for selectively supplying electric power to the electromagnet of the rear wheel side shifting unit and the driving side shifting unit.

According to the transmission of the electronic control system for bicycles according to the present invention, as the magnetic force is generated in any one of the pair of electromagnets, the rotational force of the cam shaft rotating without load is transmitted to the shifting pulley including the ratchet through the cam projection to drive the wire. Or by winding or unwinding the rear wheel side, the shift of the acceleration or deceleration is made, there is no need for the driver to operate the shift lever for shifting, so the shifting operation is easy and the driver's convenience is increased.

Since the structure of the drive sprocket and the rear wheel sprocket is opposite to each other, the bicycle is shifted at low speed by releasing the drive side wire from which the drive sprocket transmission was pulled, and the rear wheel sprocket transmission is shifted at low speed by pulling and winding the rear wheel side wire. When shifting from high speed to low speed, the rear sprocket transmission operates at low speed first, and then the drive sprocket transmission is gearshifted at low speed.In contrast, when shifting from low speed to high speed, the drive sprocket transmission operates at high speed first and then the rear sprocket transmission As the gear shift is made at a high speed, the driving force of the pedal is maintained for a long time.

In addition, since a certain delay time is provided to prevent too sensitive gear shifting in the short uneven portion of the road, it is possible to prevent the driver's confusion due to frequent shifting, as well as reducing power consumption.

In addition, the shift is automatically made according to the road inclination sensed by the inclination sensor, so that a high speed ratio can be shifted at high speed on flat lands, and a low speed ratio can be shifted at an uphill road to enable driving with less force. It is effective.

In addition, it is possible to reduce the manufacturing cost by being configured in a semi-automatic manner that can be shifted to a high speed or a low speed only by pressing the acceleration switch and the deceleration switch.

In addition, since the remaining components other than the shift lever of various transmission mechanisms applied to a general shift bike can be used as they are, there is an effect of minimizing additional costs.

1 is a block diagram showing a bicycle having a transmission of an electronic control method according to an embodiment of the present invention,

2 is a block diagram of a transmission of an electronic control method for a bicycle according to an embodiment of the present invention;

3 is an exploded perspective view showing a circular ratchet for a bicycle and an electronic control transmission according to a first embodiment of the present invention;

4 is a cross-sectional view showing a circular ratchet for a bicycle and an electronic control transmission according to a first embodiment of the present invention;

5 is a perspective view showing a circular ratchet for a bicycle and a transmission of an electronic control method according to a second embodiment of the present invention;

6 is a cross-sectional view showing a circular ratchet for a bicycle and an electronic control transmission according to a second embodiment of the present invention;

7 is a perspective view showing a straight ratchet for a bicycle and an electronic control transmission according to a third embodiment of the present invention;

8 is a cross-sectional view showing a linear ratchet for a bicycle and an electronic control transmission according to a third embodiment of the present invention.

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

In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only to distinguish the components from other components, and the nature, order, order, etc. of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

The present invention includes the first embodiment, the second embodiment, and the third embodiment. For the technical content, the software includes the inclination sensor for controlling the A electromagnet and the B electromagnet. The same, mechanical mechanism shows different structures individually.

1 is a block diagram showing a bicycle equipped with an electronic control transmission according to an embodiment of the present invention, Figure 2 is a block diagram of an electronic control transmission for a bicycle according to an embodiment of the present invention, Figure 3 is a present invention 4 is an exploded perspective view illustrating a transmission of an electronic control method for a bicycle according to a first embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a transmission of an electronic control method for a bicycle according to a first embodiment of the present invention.

As shown in these figures, the transmission of the electronic control system for bicycles according to the first embodiment of the present invention, as shown in Figures 1 to 4, a plurality of rear wheel sprockets 219 installed in the rear wheel portion of the bicycle A rear wheel sprocket transmission 212 for moving the chain 210 to any one of;

A drive sprocket transmission 211 for moving the chain 210 to any one of a plurality of drive sprockets 209 arranged on the drive shaft 205 of the bicycle;

A rear wheel side wire 213 for operating the rear wheel sprocket transmission 212; A drive side wire 214 for operating the drive sprocket transmission 211;

A cam shaft 255 coupled to the second gear 208 that is engaged with the first gear 207 installed on the drive shaft 205 and rotates without load, and which has a cam protrusion 257 built therein;

When the electric power is selectively supplied to the pair of

electromagnets

221 and 222 according to the inclination of the road, the left protrusion 229a on the cam protrusion 257 by the first shift terminal 223 moving in the direction of the electromagnet where magnetic force is generated. Or the protrusion 229b to which the right protrusion 229b selectively contacts, and the rear wheel side wire 213 is wound or released on the first shifting pulley 225 by using the rotational force of the cam shaft 255. A rear wheel side shifting unit 220 to be shifted;

When the driving button 215 provided on the handle is selectively pressed, the left protrusion 249a or the right protrusion (249a) or the right protrusion (2) on the cam protrusion 257 by the

electromagnets

241 and 242, in which the magnetic force of the drive side transmission portion 240 is generated. 249b) is provided with a projection 249 to selectively contact, by using the rotational force of the cam shaft 255 wound or loosened the drive side wire 214 to the second transmission pulley 245,

And a drive side transmission unit 240 in which gear shifting is performed according to a driver's selection.

Here, when the shifting

terminals

223 and 243, which are common components of the rear wheel side shifting unit 220 and the driving side shifting unit 240, contact the

a-magnets

221 and 241 to the left, the

projections

229 and 249 are provided. The

right projections

229b and 249b of the cam projections 257 are pushed in contact with each other, and the

projections

228 and 248 push the driven projections 224 'and 244' by one pitch. 226 and 246 rotate by one pitch to restrain the

pawls

227 and 247, and the

wires

213 and 214 are wound around the shift pulleys 225 and 245 to implement gear shifting.

Hereinafter, the specific operation structure will be described.

When a cyclist runs at high speed on a flat surface of a road and reaches an uphill road, the tilt sensor measures the inclination of the road and recognizes the inclination angle from the power control unit to output the battery power.

Accordingly, a magnetic force is generated in the electromagnet 221 so that the first transmission terminal 223 contacts the a electromagnet 221, and the upper right protrusion 229b at the upper end thereof is rotated by the cam protrusion 257. As a result, the protrusion touch 228 pushes the plurality of driven protrusions 224 ′ formed on the protrusion plate 224.

Accordingly, the circular ratchet 226 is rotated by one pitch including the first shift pulley 225 integral with the protrusion plate 224, and the rear wheel-side wire 213 is connected to the first shift pulley 225. Pulling the rear wheel sprocket transmission 212 while winding little by little, the gear is shifted at a low speed and the circular ratchet 226 is restrained by the detent 227.

The inclination angle of the inclination sensor is recognized according to the inclination of the road, the gear shift ratio is determined according to the inclination angle of the inclination sensor, and when the gear shift is matched with the inclination of the road, the stop sensor is checked while checking the position of the first shift pulley 225. 217 recognizes the stopper 218 of the multi-stage, cuts off the power from the power control unit, and releases the magnetic force to the electromagnet 221.

In addition, a process of gear shifting at high speed on a flat or downhill road is described as follows.

Since power is supplied to the b electromagnet 222 by the inclination sensor and the power controller, the first shift terminal 223 contacts the b electromagnet 222 where magnetic force is generated.

Accordingly, the opposite left protrusion 229a on the upper end of the protrusion 229 meets the rotating cam protrusion 257, and the right protrusion 229b integrally formed with the left protrusion 229a is pushed together.

Accordingly, the right protrusion 229b touches the detent 227 that restrains the circular ratchet 226 so that the restraint of the circular ratchet 226 is released, and the first shift formed integrally with the circular ratchet 226. The rear wheel sprocket transmission 212, which is pulled at low speed by releasing the rear wheel side wire 213 from the pulley 225, shifts gears at high speed by the elasticity of its own spring.

When the high speed button of the drive side button 215 provided on the handlebar is pressed while the road is flat or downhill, power is supplied to the a electromagnet 241 of the drive side shifting unit 240 to generate a second magnetic force. The shift terminal 243 moves to the left side.

Accordingly, the right protrusion 249b of the protrusion 249 comes into contact with the cam protrusion 257 and is pushed, and when the protrusion touch 248 pushes the driven protrusion 244 'by one pitch, the circular ratchet formed integrally with each other. 246 rotates by one pitch, restrained by the detent 247, and the wire 214 is wound around the transmission pulley 245 to pull the drive sprocket transmission 211 to shift at high speed.

Next, when the drive side transmission part 240 presses a low speed button using the drive side button 215 provided on the handle to shift the gear at a low speed, the b electromagnet 242 is supplied with power, and the second The shifting terminal 243 moves to the right to come into contact with the b electromagnet 242, and the left protrusion 249a on the opposite side encounters the rotating cam protrusion 257 and is pushed back.

Then, when the right protrusion 249b integrally formed with the left protrusion 249a touches the detent 247, the restraint of the circular ratchet 246 bound by the detent 247 is released.

When the circular ratchet 246 is restrained at the detent 247, the drive sprocket transmission 211 shifts to the low speed mode by the elasticity of its own spring being pulled.

Due to the structure of a conventional bicycle, when the rear wheel side wire 213 is pulled and wound on the first shift pulley 225 for rear wheel shifting, the rear wheel sprocket transmission 212 is gear shifted at a low speed, and the second shift pulley 245 is carried out. When the drive side wire 214 is loosened, the drive sprocket transmission 211 is shifted at a low speed.

The process of switching to the high speed mode on a flat road first shifts the gears at high speed from the drive side shifter 240, and then the rear wheel shifter 220 shifts the gears at high speed to the output of the power control unit.

In other words, when the bicycle is driven at a high speed and the road is uphill, in order to consume less driver's leg force, the gear shift of the rear wheel shift part 220 is first shifted to a lower speed, and then the driving side is operated as described above. The gear shift of the transmission 240 shifts at low speed.

This is based on the engineering principle that when the gear shift ratio is changed, it is driven by the force of the human leg, so that the larger diameter of the drive sprocket gear during the shift is less power.

In the present invention, the rear wheel shifting unit 220 automatically shifts the gear to the output of the power control unit according to the inclination of the road and the inclination of the flat and downhill roads, and gears in accordance with the torque change generated in the driver's leg. You can adjust the speed ratio. At this time, the mode may be switched in a semi-automatic manner to meet the needs of the driver.

The rear wheel side shift part 220 and the drive side shift part 240 have springs 223 " and 243 " installed on the terminal shafts 223 ' and 243 ' respectively provided on the

shift terminals

223 and 243. And inserted into holes formed in the

electromagnets

221 and 222 and 241 and 242, respectively.

Accordingly, the

shift terminals

223 and 243 are located at the center and move in the direction of the electromagnet only when power is applied to the

electromagnets

221 and 222 and 241 and 242 to generate a magnetic force.

And, the gear shift of the rear wheel sprocket transmission 212 is made according to the inclination of the road, and when the tilt angle is sensed by the inclination sensor and applied to the power control unit, the rear gear shifter 220 automatically shifts the gear according to the gear ratio and drives. The side shifting unit 240 operates the switch so that the gear shift is made by the driver's selection.

In addition, the gear shift of the rear wheel sprocket transmission 212 and the driving sprocket transmission 211 is made according to the inclination of the road, and when the inclination sensor is sensed and applied to the power control unit, the rear wheel transmission 220 and the driving side are applied. Automatic gear shifting may be performed in the shifting unit 240 in accordance with the gear ratio, and the rear wheel shifting unit 220 and the driving shifting unit 240 may operate switches of the rear button 216 and the driving button 215. Gear shifting may be made at the driver's option.

In the electro-controlled bicycle electromagnet transmission of the present invention configured as described above, the cam protrusion 257 touches the

protrusions

229 and 249 by using

electromagnets

221 and 222 and 241 and 242 where magnetic force is selectively generated. When the rear wheel side wire 213 or the drive side wire 214 is wound around the shift pulley or released, the shift is made.

In other words, according to the small magnetic force change of 1.5 V in the

electromagnets

221 and 222 and 241 and 242, the pulling power of the shifting

wires

213 and 214 is provided in the driver's foot leg, and the force of the shifting wire loosening is normal. Each is released by the restoring force of the spring of the gear transmission itself.

5 is a perspective view showing a transmission of the electronic control method for a bicycle according to a second embodiment of the present invention, Figure 6 is a cross-sectional view showing a transmission of the electronic control method for a bicycle according to a second embodiment of the present invention.

Since the second embodiment of the present invention is the same as the first embodiment of the present invention except for the shifting portion, only the configuration and operation of the shifting portion will be described.

In the second embodiment, as the slide levers 323 and 343 are in close contact with the magnetic force generated among the a

electromagnets

221 and 241 and the

b electromagnets

222 and 242, the rotating cam protrusion 357 moves to the left or to the right. The gear shift is performed by selectively pushing the

circular ratchets

326 and 346 or the

detents

327 and 347 integrally formed with the transmission pulleys 325 and 345.

The cam protrusion 357 rotates together with the cam shaft 255 by the slide key 311 and moves left and right.

As shown in these drawings, the transmission of the electronic control system for bicycles according to the second embodiment of the present invention,

The camshaft 255 in which the second gear 208 rotated by being engaged with the first gear 207 built up to the drive shaft 205 is built up, and the magnetic force and camshaft generated by the pair of

electromagnets

221 and 222. A rear wheel side shifting unit 320 for winding or releasing the rear wheel side wire 213 using a rotational force of 255,

The drive side transmission unit 340 and the rear wheel side transmission unit 320 which wind or unwind the drive side wire 214 using the magnetic force generated by the pair of

electromagnets

241 and 242 and the rotational force of the cam shaft 255. ) And a power control unit for selectively supplying power to the

electromagnets

221 and 222 and 241 and 242 of the driving side transmission unit 340.

At this time, the rear wheel-side transmission portion 320 and the slide lever 323 to rotate left and right about the center axis 323 'by the magnetic force of the electromagnets (221, 222),

One or more cam protrusions 357 are formed, rotated together with the cam shaft 255 by the slide key 311, and the cam plate 356 moving left and right as the slide lever 323 rotates,

The circular ratchet 326 is formed to selectively contact the cam protrusion 357 to rotate by one pitch in the direction of pulling the rear wheel-side wire 213 whenever the cam protrusion 357 contacts, and the circular ratchet 326. A first transmission pulley 325 which is formed integrally with and winds or unwinds the rear wheel side wire 213,

While restraining the first speed pulley 325, whenever the cam protrusion 357 contacts the detent tail 328, the first speed pulley 325 rotates by one pitch in a direction to release the rear wheel side wire 213. A detent 327 which restrains or restrains the circular ratchet 326,

When the gear shift is completed according to the slope of the road includes a stopper 318 and a stop sensor 317 to cut off the power supplied to the electromagnets (221, 222).

More specifically, the description will be described as follows.

When traveling uphill by bicycle, the tilt sensor measures the slope, and the power control unit recognizes the slope value.

Accordingly, the power supply control unit supplies power so that magnetic force is generated in the b electromagnet 222.

At this time, when the magnetic force is generated in the b electromagnet 222, the slide lever 323 is rotated about the central axis 323 'and moves the cam plate 356 in which the cam protrusion 357 is formed to the left.

In addition, the cam protrusion 357 rotates with the cam shaft 255 while moving to the left side by the slide key 311, and touches the circular ratchet 326. 325 is rotated.

Therefore, each time the cam protrusion 357 contacts the circular ratchet 326, the first speed change pulley 325 is rotated by one pitch in the direction in which the rear wheel side wire 213 is wound.

At this time, as the first transmission pulley 325 pulls the rear wheel side wire 213, the rear wheel sprocket transmission 212 shifts gears at low speed, and the first transmission pulley 325 and the circular ratchet 326 are detents 327. Is bound to.

When the inclination angle of the road is further increased, the first transmission pulley 325 is rotated in a direction of winding the rear wheel side wire 213 continuously by the cam protrusion 357, so that the rear wheel sprocket transmission 212 gears at low speed. .

On the contrary, when the first shift pulley 325 that is pulled is rotated in the gear shift mode at a high speed, the first shift pulley 325 rotates in the opposite direction according to the spring restoring force of the rear wheel sprocket transmission 212.

In other words, when the state of the road enters a flat or downhill road, the power is supplied to the a electromagnet 221 by the tilt sensor and the power control unit, so that a magnetic force is generated in the a electromagnet 221, and the slide lever 323 is The lower part rotates to the left about the central axis 323 'by the magnetic force.

When the lower part of the slide lever 323 is rotated to the left side, the cam plate 356 is slid to the right by the slide key 311, and the cam protrusion 357 rotates, and the detent integral with the detent 327 is rotated. The tail 328 is touched.

That is, in the low gear mode, the cam protrusion 357 is shifted at high speed because the circular ratchet 326 bound to the detent 327 is restrained by touching the detent tail 328.

In other words, the circular ratchet 326 restrained by the detent 327 is rotated in the direction in which the rear wheel side wire 213 is released by the self-spring restoring force of the rear wheel sprocket transmission 212 and the rear wheel sprocket transmission 212. Becomes a high gear shift.

At this time, when the gear shift is appropriate in accordance with the inclination of the road, the power control unit 250 stops the power supply of the electromagnet by the stop sensor 317 recognizes the unit of the stopper 318.

Subsequently, the drive side transmission portion 340 includes a slide lever 343 that rotates left and right about the central axis 343 'by the magnetic force of the

electromagnets

241 and 242,

One or more cam protrusions 357 are formed, rotated together with the cam shaft 255 by the slide key 311, and the cam plate 356 moving left and right as the slide lever 343 rotates,

The circular ratchet 346 is formed so as to selectively contact the cam protrusion 357 and rotate by one pitch in the direction of pulling the drive-side wire 214 whenever the cam protrusion 357 contacts, and the circular ratchet 346 A second transmission pulley 345 which is formed integrally with and winds or unwinds the driving side wire 214;

The second shifting pulley 345 is constrained, but the cam shifting 357 rotates by one pitch in the direction in which the second shifting pulley 345 releases the driving side wire 214 whenever the cam projection 357 contacts the detent tail 348. A detent 347 for restraining or restraining the circular ratchet 346,

Here, since the cam protrusion 357 rotates to selectively touch the circular ratchet 346 or the detent tail 348, the gear shift is realized at high speed and low speed.

That is, when the high speed mode is switched on a flat or downhill road, a magnetic force is generated in the b electromagnet 242, and the slide lever 343 rotates about the central axis 343 'by the magnetic force, thereby turning the cam protrusion ( 357) to the right.

At this time, when the cam protrusion 357 rotates by one pitch each time it contacts the circular ratchet 346 while moving and rotating, the second transmission pulley 345 integrally formed with the circular ratchet 346 is driven on the driving side wire 214. Driving sprocket transmission 211 implements a gear shift at high speed while pulling ().

After gear shifting, detent 347 restrains circular ratchet 346.

On the contrary, when switching to the low speed mode on the uphill road, the cam projection 357 moves to the left side by the magnetic force of the electromagnet 241,

Therefore, whenever the cam protrusion 357 moves to the left and contacts the detent tail 348, the constrained circular ratchet 346 is restrained while the second transmission pulley 345 is driven on the driving side wire 214. Loosen the gear and shift the low gear.

More specifically, the description will be described as follows.

When driving on a flat road or a downhill road, the tilt sensor measures the slope, and the power control unit recognizes the slope value.

Accordingly, the power control unit supplies power to the b electromagnet 242 so that magnetic force is generated. At this time, when the magnetic force is generated in the b electromagnet 242, the slide lever 343 is rotated about the central axis (343 ') to move the cam plate 356, the cam projection 357 is formed to the right.

In addition, the cam protrusion 357 touches the circular ratchet 346 while rotating along with the cam shaft 255 by the slide key 311, and the second speed pulley 345 is formed around the central shaft 310. Will rotate.

Therefore, each time the cam protrusion 357 contacts the circular ratchet 346, the second speed change pulley 345 rotates by one pitch in the direction in which the driving side wire 214 is wound.

At this time, as the second transmission pulley 345 pulls the driving side wire 214, the drive sprocket transmission 211 shifts gears at high speed and the circular ratchet 346 of the second transmission pulley 345 is detent 347. Is bound to.

When the inclination angle of the road is further lowered, the second transmission pulley 345 rotates in the direction of winding the rear wheel side wire 214 continuously by the cam protrusion 357, so that the drive sprocket transmission 211 is gear shifted at high speed. .

On the contrary, the second transmission pulley 345, which has been pulled, rotates in the opposite direction according to its own spring restoring force of the drive sprocket transmission 211 when the gear shift is switched at a low speed.

In other words, when driving up a road by bicycle, power is supplied to the a electromagnet 241 by the tilt sensor and the power control unit so that a magnetic force is generated in the a electromagnet 241, and the slide lever 343 is a magnetic force. The lower part comes into contact with the right side about the center axis 343 '.

When the lower portion of the slide lever 343 is rotated to the right side, the cam plate 356 is slid to the left while rotating about the cam axis 255 by the slide key 311, the cam protrusion 357 is rotated While touching the detent tail 348.

That is, in the high speed gear mode, the cam ratchet 357 touches the detent tail 348 and the circular ratchet 346 is restrained.

As such, the circular ratchet 346 released from the detent 347 rotates in the direction in which the drive side wire 214 is released by the spring restoring force of the drive sprocket transmission 211, and the drive sprocket transmission 211 is rotated. It becomes the low gear shift.

At this time, the driving side shifting unit 340 is provided with a stop sensor 317 and a stopper 318 when the appropriate gear shift in accordance with the inclination of the road, the power control unit 250 is the stop sensor 317 of the stopper 318 The unit can be recognized to cut off the power supply to the electromagnet.

7 is a perspective view showing a transmission of the electronic control method for a bicycle according to a third embodiment of the present invention, Figure 8 is a cross-sectional view showing a transmission of the electronic control method for a bicycle according to a third embodiment of the present invention.

In the third embodiment of the present invention, since the hardware and software for electronic control including a tilt sensor in addition to the mechanical configuration are the same as those of the first embodiment of the present invention described above, only the configuration and operation of the transmission portion will be described. .

As shown in these drawings, the transmission of the electronic control method for bicycles according to the third embodiment of the present invention, the second gear 208 is engaged with the first gear 207 built in the drive shaft 205 and rotates Rear wheel side shifting by pulling or releasing the rear wheel side wire 213 by using the cam shaft 255 on which the shaft is laid, the magnetic force generated by the pair of

electromagnets

221 and 222, and the rotational force of the cam shaft 255. Section 420,

The drive side transmission portion 440 and the rear wheel side transmission portion 420 which pull or release the drive side wire 214 using the magnetic force generated by the pair of

electromagnets

241 and 242 and the rotational force of the cam shaft 255. ) And a power control unit 250 for selectively supplying power to the

electromagnets

221 and 222 and 241 and 242 of the driving side transmission unit 440.

At this time, the rear wheel-side transmission portion 420 and the slide lever 423 to rotate left and right about the central axis 423 'by the magnetic force of the electromagnets (221, 222),

One or more cam protrusions 457 are formed, rotate together with the cam shaft 255, and the cam plate 456 sliding to the left and right as the slide lever 423 rotates,

A plurality of driven protrusions 424 'and a straight ratchet 426 are formed in the longitudinal direction, and a ratchet plate 424 for pulling or releasing the rear wheel side wire 213;

The touch lever 429 selectively contacts the cam protrusion 457 so that the ratchet plate 424 pulls the rear wheel side wire 213 whenever the cam protrusion 457 contacts the touch lever 429. The ratchet plate 424 is connected to the rear wheel side wire whenever the protrusion 428 for pushing the driven protrusion 424 'and the linear ratchet 426 restrain each other by the cam protrusion 457. 213 and a detent (427) to move one pitch in the release direction,

When the gear shift is completed according to the slope of the road includes a stopper 418 and a stop sensor 417 to cut off the power supplied to the electromagnets (221, 222).

More specifically, the description will be described as follows.

When driving up a road by bicycle, the tilt sensor 251 measures the tilt, and the power control unit 250 recognizes the tilt value.

Accordingly, the power supply control unit 250 supplies power so that magnetic force is generated in the b electromagnet 222.

At this time, when the magnetic force is generated in the b electromagnet 222, the slide lever 423 is slid to move the cam plate 456, the cam projection 457 is formed around the central axis 423 'to the left.

In addition, the cam protrusion 457 touches the touch lever 429 while rotating together with the cam shaft 255, and the protrusion touch 428 rotates about the central axis.

Therefore, whenever the cam protrusion 457 contacts the touch lever 429, the protrusion touch 428 moves the driven protrusion 424 by one pitch so that the ratchet plate 424 pulls the rear wheel side wire 213. Pushed ').

Accordingly, as the ratchet plate 424 pulls the rear wheel side wire 213, the rear wheel sprocket transmission 212 shifts gears at low speed and the straight ratchet 426 is restrained by the detent 427.

As the inclination angle of the road becomes higher, the rear sprocket transmission 212 shifts gears at low speed by continuously pulling the straight ratchet 426 by the protrusion touch 428.

On the contrary, the ratchet plate 424 that has been pulled is moved in the direction in which the rear wheel side wire 213 is released by the spring 430 restoring force when switching to the high speed gear shift mode.

In other words, when the state of the road enters a flat or downhill road, the magnetic force is generated in the a electromagnet 221 by supplying power to the a electromagnet 221 by the tilt sensor 251 and the power control unit 250, The slide lever 423 is rotated to the left side by the magnetic force about the central axis 423 '.

When the upper portion of the slide lever 423 rotates to the left side, the cam plate 456 is slid to the right while rotating about the cam axis 255 by the slide key 458, and the cam protrusion 457 rotates. While touching the detent 427.

In the low gear mode, the cam protrusion 457 touches the detent 427 so that the straight ratchet 426 is restrained.

The straight ratchet 426, which is restrained by the detent 427, moves in the direction of releasing the rear wheel side wire 213 by the restoring force of the spring 430, that is, the direction opposite to the pulling direction, and the rear wheel sprocket transmission 212. ) Becomes the high gear shift.

When the gear shift is made in accordance with the inclination of the road, the stop sensor 417 recognizes the unit of the stopper 418 and cuts off the power supply of the electromagnet from the power control unit 250.

Here, the driving side transmission portion 440 is only the difference in the number of the linear ratchet 426 and the driven projection 424 ′, the same as the rear wheel side transmission portion 420 of the present invention described above will be omitted for brevity. do.

The rear wheel side shift portion 420 and the

ratchet plates

424 and 444 of the drive side shift portion 440 configured as described above have a slide groove 425 into which the fixed panel 425 'is fitted to slide forward and backward. It is formed in the longitudinal direction, the fixing panel 425 'is fitted into the slide groove 425.

More specifically, the

ratchet plates

424 and 444 are respectively installed on the

rails

423a and 443a disposed at right angles to the cam shaft 255, and are supported by the fixed panel 425 'fitted in the slide groove 425 to slide. Will move.

In the above description, all the components constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to these embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more.

In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be included unless otherwise stated, and thus, other components are excluded. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims

The rear wheel sprocket transmission 212 for moving the chain 210 to any one of the plurality of rear wheel sprockets 219 arranged on the rear wheel shaft of the bicycle, and any of the plurality of drive sprockets 209 built on the drive shaft 205 of the bicycle. A drive sprocket transmission 211 for moving the chain 210 with one, a rear wheel side wire 213 for operating the rear wheel sprocket transmission 212, and a drive side wire 214 for operating the drive sprocket transmission 211. In the transmission of the electronic control system for bicycles, including

A cam shaft 255 on which the second gear 208 rotated by being engaged with the first gear 207 arranged on the drive shaft 205;

A rear wheel side shifting unit for winding or releasing the rear wheel side wire 213 by using a magnetic force generated by a pair of electromagnets 221 and 222 and a rotational force of the cam shaft 255;

A drive side transmission unit which winds or unwinds the drive side wire 214 by using a magnetic force generated by a pair of electromagnets 241 and 242 and a rotational force of the cam shaft 255; And

A power control unit for selectively supplying power to the electromagnets (221, 222) (241, 242) of the rear wheel side shift unit and the driving side shift unit;

Electronic control transmission for bicycles comprising a.
The method of claim 1,

The rear wheel side shift portion and the drive side shift portion are gear shift ratios are selected according to the inclination of the road,

In addition to providing power from the drive shaft 205, a shift pulley 225 in which the projection of the cam shaft 255 and the projection of the driven part meet and rotate by the magnetic force of the selected electromagnets 221, 222, 241 and 242 ( The derailleur 227, 247 restrains or restrains the circular ratchet 226, 246 of the 245, the electronically controlled transmission for a bicycle.
The method of claim 1,

The rear wheel shift portion,

A cam plate 256 formed on the cam shaft 255 and having one or more cam protrusions 257 formed thereon;

A protrusion 229 provided with a left protrusion 229a and a right protrusion 229b selectively contacting the cam protrusion 257;

When the cam protrusion 257 of the cam plate 256 contacts the right protrusion 229b of the protrusion 229, the protrusion pushing the driven protrusion 224 ′ so that the protrusion plate 224 rotates by one pitch. Touch 228;

The protrusion 229 and the protrusion touch 228 are connected, and disposed between any one of the electromagnets 221 and b electromagnets 222 which are spaced apart at regular intervals, the magnetic force is generated when shifting A first transmission terminal 223 which is in close contact but is contacted by the magnetic force generation of the electromagnet 221 on an uphill road;

The protrusion plate 224 integrally coupled with the a electromagnet 221 and having a plurality of the driven protrusions 224 'formed along an inner side edge thereof;

A circular ratchet 226 formed integrally with the b electromagnet 222 and having a ratchet gear formed on an outer circumferential surface thereof so that the gear shift is made at a high speed when the restraint is released from the downhill;

A first transmission pulley 225 wound around the rear wheel side wire 213 and integrally formed with the protrusion 224 and the circular ratchet 226;

The driven protrusion (224 ') pushed by the protrusion touch (228) rotated by the right protrusion (229b) when the cam protrusion (257) and the right protrusion (229b) of the protrusion (229) contact;

While restraining the circular ratchet 226, when the cam protrusion 257 and the left protrusion 229a of the protrusion 229 contact each other, the circular ratchet 226 rotates by the right protrusion 229b so that the circular ratchet 226 is pitched by one pitch. A detent 227 for rotating and shifting gears; And

A stopper 218 and a stop sensor 217 for cutting off the power supplied to the electromagnets 221 and 222 when the gear shift is completed according to the slope of the road;

Electronic control transmission for bicycles comprising a.
The method of claim 3, wherein

The first transmission terminal 223 is provided with a terminal shaft 223 'on both sides, and the transmission of the electronic control method for bicycles, characterized in that the spring 223 "is installed to be located at the center of the electromagnets (221, 222), respectively. .
The method of claim 1,

The rear wheel shift portion is made of a gear shift automatically according to the inclination of the road by the control processor, it is possible to reset the gear shift ratio according to the driver's leg force,

The drive side transmission portion of the electronic control system for bicycles, characterized in that it comprises a drive side button (215) so that the gear shift is made according to the driver's selection.
The method of claim 1,

The power control unit is configured to selectively apply power to the electromagnets (221, 222) (241, 242) after a predetermined delay time has passed after receiving the signal of the tilt sensor. .
The method of claim 1,

A transmission processor for a bicycle, characterized in that the control processor is configured so that the rear wheel gear shifts first at low speed and the drive gear shifts at low speed in order to increase the driver's leg force when shifting at low speed.
The method of claim 1,

The rear wheel shift portion 320,

A slide lever 323 rotating left and right about a central axis 343 'by the magnetic force of the electromagnets 221 and 222;

One or more cam protrusions 357 are formed, rotate together with the cam shaft 255, and move cam left and right as the slide lever 323 rotates;

A circular ratchet 326 is formed to selectively contact the cam protrusion 357 to rotate by one pitch in a direction of pulling the rear wheel side wire 213 whenever the cam protrusion 357 contacts, and the rear wheel A first transmission pulley 325 winding or releasing the side wire 213;

Constrain the first shifting pulley 325 but the circular shift so that the first shifting pulley 325 rotates by one pitch in a direction in which the rear wheel-side wire 213 is released whenever the cam protrusion 357 contacts. Detent tail 328 and detent 327 to restrain or destrain ratchet 326; And

A stopper 418 and a stop sensor 417 which cut off the power supplied to the electromagnets 221 and 222 when the gear shift is completed according to the slope of the road;

Electronic control transmission for bicycles comprising a.
The method of claim 8,

The cam shaft 255 is a spring that elastically supports both sides of the cam plate 356 so that the cam plate 356 sliding to the left and right is located between the circular ratchet 326 and the detent tail 328. An electronic control transmission for a bicycle, characterized in that 358 is provided.
The method of claim 9,

The detent tail is bent on the side of the detent so as to secure the distance when the cam projection 357 sliding to the left or right for high speed gear shift or low speed gear shift, electronic control system for bicycles Gearbox.
The method of claim 1,

The rear wheel shift portion,

A slide lever 423 rotating left and right about a central axis 443 'by the magnetic force of the electromagnets 221 and 222;

One or more cam protrusions 457, the cam plate 456 rotating together with the cam shaft 255, and moving left and right as the slide lever 423 rotates;

A plurality of driven protrusions 424 ′ and a straight ratchet 426 formed in the longitudinal direction, the ratchet plate 424 pulling or releasing the rear wheel side wire 213;

A touch lever 429 is formed to selectively contact the cam protrusion 457 so that the ratchet plate 424 moves the rear wheel side wire 213 whenever the cam protrusion 457 contacts the touch lever 429. A protrusion touch 428 for pushing the driven protrusion 424 'to move by one pitch in a pulling direction;

The cam protrusion 457 restrains the straight ratchet 426 but moves the pitch by one pitch in the direction in which the ratchet plate 424 releases the rear wheel side wire 213 whenever the cam protrusion 457 contacts. Detents 427 for releasing the restraint of the straight ratchet 426 by means of; And

A stopper 418 and a stop sensor 417 which cut off the power supplied to the electromagnets 221 and 222 when the gear shift is completed according to the slope of the road;

Electronically controlled transmission for bicycles comprising a.
The method of claim 11,

The ratchet plate 424 is an electronically controlled transmission for bicycles, characterized in that a slide groove 425 into which the fixed panel 425 'is fitted is formed in a longitudinal direction so as to be arranged side by side and slide forward and backward. .