KR101798470B1 - Electronic Control type Transmission for Bicycle - Google Patents

Abstract

According to the disclosed invention, a transmission of an electronic control method for a bicycle enabling a shifting pulley enabling a rear wheel side shifting wire and a driving side shifting wire to be wound or unwound to be positioned by using a crank shaft as a satellite, and a sprocket transmission provided to a driving sprocket and a rear wheel sprocket of a multi-stage structure, respectively, to be operated and shifting is automatically performed when the shifting pulley is rotated forward or backward by a rotational force of the crank shaft in accordance with a magnetic force of a selected electromagnet in order to easily simplify shifting control to improve drivers convenience.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an electronic control type transmission for a 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 the speed according to the inclination of a road, driving habits, etc. More specifically, the present invention relates to a transmission having a multi- So that the shifting operation can be easily and simply performed, thereby increasing the convenience of the driver. In the electronic control type transmission for bicycle, will be.

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.

On the other hand, as a result of investigation of prior art relating to a transmission of a bicycle, a large number of patent documents have been searched, and some of them are as follows.

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.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a sprocket transmission having a multi-stage structure in which a shift pulley rotates in a forward direction or a reverse direction, The present invention provides an electronic control type transmission for a bicycle, which is capable of increasing the convenience of the driver by allowing the shift operation to be performed automatically and easily.

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 use the existing transmission mechanism without disposing And an object of the present invention is to provide an electronic control type transmission.

According to an aspect of the present invention, there is provided an electronically controlled transmission for a bicycle 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, And a drive-side wire for operating the drive sprocket transmission, wherein the drive-side wire for operating the drive sprocket transmission comprises: a rear-wheel sprocket transmission for moving the chain to any one of the rear- A cam shaft on which a second gear rotates in engagement with a first gear shafted on the drive shaft; A rear wheel side speed changing portion for winding or releasing the rear wheel side wire using a magnetic force generated by a pair of electromagnets and a rotational force of the camshaft; A drive-side transmission portion for winding or releasing the drive-side wire by using a magnetic force generated by a pair of electromagnets and a rotational force of the camshaft; And a power control unit for selectively supplying power to the electromagnets of the rear wheel side speed changing unit and the driving side speed changing unit.

According to the electronic control type transmission for bicycle according to the present invention, as the magnetic force is generated in any one of the pair of electromagnets, the rotational force of the camshaft, which rotates in no-load rotation, is transmitted to the shift pulley including the ratchet via the cam protrusion, Or the rear-wheel-side wire is wound or unwound, acceleration or deceleration is shifted, 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 driver's convenience 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 low speed, later the drive sprocket transmission is shifted to low speed, and conversely, when shifting from low speed to high speed, the drive sprocket transmission first operates at high speed, and later the rear sprocket transmission As the gear shift is performed at a high speed, there is an effect that the driver can keep the force for turning the pedal long.

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.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a block diagram of a bicycle equipped with a transmission of an electronic control system according to an embodiment of the present invention;
2 is a block diagram of an electronically controlled transmission 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 a transmission of an electronic control system according to a first embodiment of the present invention,
FIG. 4 is a sectional view showing a circular ratchet for a bicycle and a transmission of an electronically controlled system 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 system according to a second embodiment of the present invention,
6 is a cross-sectional view showing a circular ratchet for a bicycle and a transmission of an electronic control system according to a second embodiment of the present invention,
7 is a perspective view showing a linear ratchet for a bicycle and a transmission of an electronic control system according to a third embodiment of the present invention,
8 is a cross-sectional view showing a linear ratchet for a bicycle and a transmission of an electronic control system according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a transmission according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different 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.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

The present invention is based on the first embodiment, the second embodiment and the third embodiment, and includes tilt sensors for controlling the A electromagnet and the B electromagnet, And the mechanical mechanism shows different structures.

FIG. 1 is a block diagram of a bicycle equipped with a transmission of an electronic control system according to an embodiment of the present invention. FIG. 2 is a block diagram of a transmission of an electronic control system for a bicycle according to an embodiment of the present invention. FIG. 4 is an exploded cross-sectional view showing an electronic control type transmission for a bicycle according to a first embodiment of the present invention

1 to 4, the transmission of the electronically controlled bicycle according to the first embodiment of the present invention includes a plurality of rear wheel sprockets 219 provided on the rear wheel portion of the bicycle, A rear wheel sprocket transmission 212 for moving the chain 210 to any one of the front and rear wheels;

A drive sprocket transmission 211 for moving the chain 210 to any one of a plurality of drive sprockets 209 provided in a 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 a second gear 208 coupled with the first gear 207 mounted on the drive shaft 205 and rotating in a no-load state and having the cam protrusion 257 therein;

When the power is selectively supplied to the pair of electromagnets 221 and 222 according to the degree of inclination of the road, the first projecting portion 223 that moves in the direction of the electromagnet where the magnetic force is generated causes the projection 227 And the protruding portion 229 to which the right projection 229b is selectively in contact is used to wind or unwind the rear wheel side wire 213 to the first shift pulley 225 using the rotational force of the cam shaft 255, A rear-wheel speed change portion 220 to be shifted;

 The left protrusion 249a or the right protrusion 249a is formed on the cam protrusion 257 by the electromagnets 241 and 242 that generate magnetic force of the drive-side speed change portion 240 when the drive side button 215 provided on the handle is selectively pressed. Side wire 214 is wound around or released to the second shift pulley 245 by using the rotational force of the cam shaft 255,

And a drive-side speed change portion 240 for shifting the gear according to the driver's selection.

Here, when the speed change terminals 223 and 243, which are common components of the rear wheel side speed change section 220 and the drive side speed change section 240, touch the electromagnets 221 and 241 to the left side, the protrusions 229 and 249, The right protrusions 229b and 249b of the protrusions 229 and 249 are pressed against the cam protrusions 257 and the protrusions 228 and 248 push the driven protrusions 224 'and 244' one pitch at a time, The gears 226 and 246 are rotated by one pitch to be restrained by the detents 227 and 247 and the wires 213 and 214 are wound around the shift pulleys 225 and 245 to implement gear shifting.

Hereinafter, a concrete operation structure will be described.

When a bicycle driver runs at a high speed from a flat road, the slope sensor measures the slope of the road and ascends the slope angle of the slope sensor to the power controller.

Thus, a magnetic force is generated in the a electromagnet 221, so that the first speed change terminal 223 is brought into contact with the a electromagnet 221, and the opposite right-side projection 229b of the upper end is brought into contact with the rotating cam projection 257 And the projection 228 pushes the plurality of driven projections 224 'formed on the stone substrate 224

Therefore, the circular ratchet 226 including the right first shift pulley 225 integrally formed with the stone substrate 224 rotates one pitch at a time,

The rear wheel side wire 213 is slightly wound around the first shift pulley 225 to pull the rear wheel sprocket transmission 212 so that the gear is shifted at a low speed and the circular ratchet 226 is restrained to the detent 227.

The gear ratio of the tilt sensor is determined according to the tilt angle of the tilt sensor and the gear ratio of the tilt sensor is determined according to the tilt of the road. The control unit 217 recognizes the stopper 218 having a multi-stage, disconnects the power from the power control unit, and releases the magnetic force to the a electromagnet 221.

On the contrary, a process of gear shifting at a high speed on a flat or downhill road will be described as follows.

Since the power is supplied to the b electromagnet 222 by the tilt sensor and the power control unit, the first speed change terminal 223 is brought into contact with the b electromagnet 222 where the magnetic force is generated.

Thus, the opposite left projection 229a on the upper end of the projection 229 is brought into contact with the rotating cam projection 257, and the right projection 229b integrally formed with the left projection 229a is also pushed together.

The right protrusion 229b touches the detent 227 restricting the circular ratchet 226 so that the circular ratchet 226 is prevented from being restrained and the first ratchet 226 is formed integrally with the first ratchet 226, The rear wheel sprocket transmission 212 pulled at the low speed by releasing the rear wheel side wire 213 from the pulley 225 is shifted at high speed by the elastic force of the self spring.

When the high-speed button of the drive-side button 215 provided on the bicycle handle is pressed during the running of the road, power is supplied to the a electromagnet 241 of the drive-side transmission portion 240, The shift terminal 243 is moved to the left side.

As a result, the right projection 249b of the projection 249 comes into contact with the cam protrusion 257 and is pushed. When the projection 248 pushes the driven projection 244 'one pitch at a time, The clutch 246 is rotated by one pitch and restrained to the detent 247 and the wire 214 is wound on the shift pulley 245 to pull the drive sprocket transmission 211 to shift at high speed.

Next, when the low-speed button is pressed using the drive-side button 215 provided on the handle for the gear-shifting of the drive-side transmission portion 240 at low speed, power is supplied to the b electromagnet 242, The transmission terminal 243 moves to the right to contact the electromagnet 242 and the left protrusion 249a on the opposite side comes into contact with the rotating cam protrusion 257 and is pushed.

The right protrusion 249b formed integrally with the left protrusion 249a touches the detent 247 to release the restraint of the circular ratchet 246 restrained by the detent 247. [

When the circular ratchet 246 is restrained by the detent 247, the drive sprocket transmission 211 shifts to the low speed mode by the elastic force of the self-spring being pulled.

The rear wheel-side wire 213 is pulled to the first change-speed pulley 225 that performs rear-wheel shifting, so that the rear-wheel-side rear wheel sprocket transmission 212 is shifted at a low speed and the second shift pulley 245 The drive sprocket transmission 211 is shifted to the low speed.

In the process of switching from the flat road to the high speed mode, first, the drive side transmission portion 240 shifts gear at high speed, and the rear wheel side speed change portion 220 shifts at high speed to the output of the next power control portion.

The gear shift of the rear wheel side speed change portion 220 is firstly shifted to a low speed so as to reduce the leg force of the driver when the uphill road of the road is driven while driving the bicycle at a high speed, The gear shift of the transmission portion 240 shifts at low speed.

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

In the present invention, the rear wheel side speed change section 220 automatically shifts the gear in response to the inclination of the road and the inclination of the flat and downhill roads, The transmission ratio can be adjusted. At this time, the mode may be switched in a semi-automatic manner in accordance with the driver's desire.

The rear wheel side speed change portion 220 and the drive side speed change portion 240 are provided with springs 223 "and 243" on the terminal shafts 223 'and 243' provided respectively at the speed change terminals 223 and 243 And inserted into the holes formed in the electromagnets 221 and 222 (241 and 242), respectively.

Accordingly, the speed change terminals 223 and 243 are located at the center, and only when the power is applied to the electromagnets 221 and 222 (241 and 242) and magnetic force is generated, the speed change terminals 223 and 243 move in the electromagnet direction.

The gear shift of the rear wheel sprocket transmission 212 is performed according to the inclination of the road. When the inclination angle sensor detects the inclination angle and is applied to the power control unit, the rear wheel speed change gear 220 automatically shifts gears according to the gear ratio, The side transmission portion 240 operates the switch so that gear shifting is performed by the driver's choice.

In addition, the gear shift of the rear wheel sprocket transmission 212 and the drive sprocket transmission 211 is performed according to the inclination of the road. When the tilt angle is sensed by the tilt sensor and applied to the power control unit, And the rear wheel side speed change portion 220 and the drive side speed change portion 240 may be operated by switching the switches of the rear side button 216 and the driving side button 215 The gear shift may be made by the driver's choice.

The electromagnet transmission for bicycle of the present invention having the above-described configuration of the present invention is configured such that the protrusions 229 and 249 are rotated by the electromagnets 221 and 222 (241 and 242) Side wire 213 or the driving-side wire 214 is wound on or released from the variable speed pulley.

The pulling power of the transmission wires 213 and 214 is provided by the foot of the driver in accordance with a small magnetic force change of 1.5 V in the electromagnets 221 and 222 (241 and 242) Respectively, by the restoring force of the spring of the gear transmission itself.

FIG. 5 is a perspective view of a transmission of an electronic control system for a bicycle according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view illustrating a transmission of an electronic control system 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 transmission portion, only the configuration and operation of the transmission portion will be described.

In the second embodiment, the cam protrusion 357 which rotates as the slide levers 323 and 343 come into close contact with the magnetic forces of the electromagnets 221 and 241 and the b electromagnets 222 and 242 moves to the left or to the right 346 or pawls 327, 347 which are formed integrally with the transmission pulleys 325, 345 to selectively perform gear shifting.

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 figures, in the electronically controlled transmission for a bicycle according to the second embodiment of the present invention,

A cam shaft 255 in which a second gear 208 that rotates in engagement with the first gear 207 that is provided in the drive shaft 205 is rotatably supported by the cam shaft 255 and a cam shaft 255 in which a magnetic force generated by the pair of electromagnets 221, A rear wheel side speed change portion 320 for winding or releasing the rear wheel side wire 213 by using the rotational force of the shaft 255,

 A driving-side speed change portion 340 and a rear-wheel speed change portion 320, which wind or unwind the driving-side wire 214 by using the magnetic force generated by the pair of electromagnets 241 and 242 and the rotational force of the camshaft 255, And the electromagnets 221, 222 (241, 242) of the drive-side transmission portion 340. The power control portion selectively supplies power to the electromagnets 221, 222, 241,

At this time, the rear wheel side speed change portion 320 includes a slide lever 323 which rotates left and right about the central axis 323 'by the magnetic force of the electromagnets 221 and 222,

One or more cam protrusions 357 are formed and cam plate 356 which rotates together with cam shaft 255 by slide key 311 and which moves laterally as the slide lever 323 rotates,

A circular ratchet 326 is formed so as to be rotated by one pitch in a direction of pulling the rear wheel side wire 213 every time the cam protrusion 357 contacts with the cam protrusion 357 selectively, A first shift pulley 325 formed integrally with the rear wheel side wire 213 for winding or releasing the rear wheel side wire 213,

Each time the cam protrusion 357 contacts the detent tail 328 while restricting the first change-speed pulley 325, the first shift pulley 325 rotates by one pitch in the direction of unwinding the rear- A pawl 327 for restraining or restraining the circular ratchet 326;

And a stopper 318 and a stop sensor 317 for shutting off the power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road.

More specifically, the description is as follows.

When the bicycle rises uphill on the road, the tilt sensor measures the tilt, and the power control section perceives the tilt value.

Accordingly, the power source controller supplies power to generate the magnetic force in the b electromagnet 222.

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

The cam protrusion 357 is moved to the left by the slide key 311 and rotates together with the cam shaft 255 to touch the circular ratchet 326. The center of rotation of the first change- (325) is rotated.

Therefore, every time the cam protrusion 357 contacts the circular ratchet 326, the first shift pulley 325 rotates by one pitch in the direction of winding the rear wheel side wire 213. [

At this time, as the first shift pulley 325 pulls the rear wheel side wire 213, the rear wheel sprocket transmission 212 is shifted to the low speed and the first shift pulley 325 and the circular ratchet 326 are engaged with the detent 327, .

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

On the contrary, when the first shift pulley 325 is switched to the gear shift mode at high speed, the first shift pulley 325 rotates in the opposite direction in accordance with the spring restoring force of the rear wheel sprocket transmission 212 itself.

In other words, when the state of the road is folded on the flat or downhill path, 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 electromagnet 221, and the slide lever 323 And the lower portion is pivoted to the left about the central axis 323 'by the magnetic force.

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

That is, in the low gear mode, the cam protrusion 357 touches the detent tail 328, so that the circular ratchet 326, which is restrained by the detent 327, is restrained and thus is shifted at a high speed.

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 is rotated, Speed gear change.

At this time, the power control unit 250 recognizes the unit of the stopper 318 by the stop sensor 317 and cuts off the power supply of the electromagnet when the gear is shifted according to the slope of the road.

Subsequently, the drive-side speed change portion 340 includes a slide lever 343 which is pivoted about the center shaft 343 'by the magnetic force of the electromagnets 241 and 242,

A cam plate 356 which forms one or more cam protrusions 357 and rotates together with the cam shaft 255 by means of the slide key 311 and moves laterally as the slide lever 343 rotates,

A circular ratchet 346 is formed so as to be rotated by one pitch in a direction of pulling the drive side wire 214 every time the cam protrusion 357 touches the cam protrusion 357 selectively, A second change-speed pulley 345 formed integrally with the drive-side wire 214 for winding or releasing the drive-side wire 214,

Each time the cam protrusion 357 contacts the detent tail 348 while restricting the second change-speed pulley 345, the second shift pulley 345 rotates by one pitch in the direction in which the drive- A detent 347 for restraining or restraining the circular ratchet 346,

And a stopper 318 and a stop sensor 317 for shutting off the power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road.

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

That is, when the mode is switched to the high speed mode from the downward slope of the road, a magnetic force is generated in the b electromagnet 242, and the slide lever 343 rotates about the center shaft 343 ' 357) to the right.

At this time, when the cam protrusion 357 moves and rotates and is rotated by one pitch every time the circular ratchet 346 contacts the second ratchet 346, the second shift pulley 345 integrally formed with the circular ratchet 346 is engaged with the driving wire 214 The drive sprocket transmission 211 realizes a gear shift at a high speed.

After gear shifting, the detent 347 restrains the circular ratchet 346.

Conversely, when the mode is changed from the uphill to the low speed mode, the cam protrusion 357 moves to the left by the magnetic force of the a electromagnet 241,

Thus, each time the cam protrusion 357 moves to the left and rotates and contacts the detent tail 348, the restrained circular ratchet 346 is restrained and the second shift pulley 345 moves to the driven- So that the low gear is shifted.

More specifically, the description is as follows.

When the bicycle is traveling on the road, the tilt sensor measures the tilt, and the power control unit recognizes the tilt value.

Accordingly, the power supply control unit supplies power to the b electromagnet 242 so that a magnetic force is generated.

At this time, when the b electromagnet 242 generates a magnetic force, the slide lever 343 rotates about the central axis 343 'and moves the cam plate 356 formed with the cam protrusion 357 to the right.

The cam protrusion 357 is rotated together with the cam shaft 255 by the slide key 311 to touch the circular ratchet 346 and the second shift pulley 345 is rotated about the center axis 310 .

Thus, each time the cam protrusion 357 contacts the circular ratchet 346, the second shift pulley 345 is rotated by one pitch in the direction of winding the drive-side wire 214. [

At this time, the second shift pulley 345 pulls the drive-side wire 214 so that the drive sprocket transmission 211 is shifted at high speed and the circular ratchet 346 of the second shift pulley 345 is engaged with the detent 347, .

When the tilt angle of the road further decreases, the second shift pulley 345 rotates in the direction of continuously winding the rear wheel side wire 214 by the cam protrusion 357, so that the drive sprocket transmission 211 shifts at high speed .

On the contrary, the second shift pulley 345 which is pulled and pulled rotates in the opposite direction according to the self-spring restoring force of the drive sprocket transmission 211 at the time of gear shift change at low speed.

In other words, when the bicycle rises up the road, the electric 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 electromagnet 241. The slide lever 343, The lower portion is in contact with the center shaft 343 'on the right side.

When the lower portion of the slide lever 343 rotates to the right side, the cam plate 356 is slid to the left while rotating around the cam shaft 255 by the slide key 311, and the cam protrusion 357 rotates And touches the detent tail 348.

That is, in the high gear mode, the cam protrusion 357 touches the detent tail 348 so that the circular ratchet 346 is constrained.

As described above, the circular ratchet 346 which is released from the detent 347 is rotated 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 Speed gearshift.

At this time, the drive-side speed change portion 340 is provided with the stop sensor 317 and the stopper 318 so that when the gear shift is appropriately performed in accordance with the inclination of the road, the power control portion 250 controls the stop sensor 317 to stop the stopper 318 The power supply of the electromagnet can be cut off by recognizing the unit.

FIG. 7 is a perspective view illustrating a transmission of an electronic control system for a bicycle according to a third embodiment of the present invention, and FIG. 8 is a sectional view of a transmission of an electronic control system for a bicycle according to a third embodiment of the present invention.

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

As shown in these drawings, the transmission of the electronically controlled system for bicycle according to the third embodiment of the present invention includes a second gear 208 (not shown) that meshes with and rotates with a first gear 207, And a rear wheel-side speed change gear (not shown) for pulling or releasing the rear wheel-side wire 213 by using the magnetic force generated by the pair of electromagnets 221 and 222 and the rotational force of the camshaft 255, 420,

A drive side transmission portion 440 and a rear wheel side transmission portion 420 for pulling or releasing the driving side wire 214 by using the magnetic force generated by the pair of electromagnets 241 and 242 and the rotational force of the camshaft 255 And a power supply control unit 250 for selectively supplying power to the electromagnets 221, 222 (241, 242) of the drive-side transmission portion 440.

At this time, the rear wheel side speed change portion 420 includes a slide lever 423 that rotates left and right about the central axis 423 'by the magnetic force of the electromagnets 221 and 222,

 A cam plate 456 formed with one or more cam protrusions 457 and rotating together with the camshaft 255 and slidably moving in a lateral direction as the slide lever 423 is rotated,

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

Each time the cam protrusion 457 contacts the touch lug 429, the touch lug 429 which is selectively in contact with the cam protrusion 457 is formed so that the ratchet plate 424 moves in the direction in which the rear wheel side wire 213 is pulled And the ratchet plate 424 is engaged with the rear wheel side wire 421. The ratchet plate 424 is connected to the rear wheel side wire 424 by a protrusion touch 428 for pushing the driven protrusion 424 ' A detent (427) for moving the tape (213) in the direction of unwinding by one pitch,

And a stopper 418 and a stop sensor 417 for shutting off the power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road.

More specifically, the description is as follows.

The tilt sensor 251 measures the tilt, and the power control unit 250 recognizes the tilt value.

Accordingly, the power control unit 250 supplies power to generate the magnetic force in the b electromagnet 222.

At this time, when a magnetic force is generated in the b electromagnet 222, the slide lever 423 slides the cam plate 456 having the cam protrusion 457 around the center shaft 423 'to the left.

Then, the cam protrusion 457 rotates together with the cam shaft 255 to touch the touch lever 429, and the protrusion touch 428 rotates around the center axis.

Each time the cam protrusion 457 touches the touch lever 429, the protrusion touch 428 is engaged with the driven protrusion 424 so that the ratchet plate 424 moves by one pitch in the direction in which the rear wheel side wire 213 is pulled ').

As a result, the rear wheel sprocket transmission 212 is shifted to the low speed and the linearly connected ratchet 426 is restrained to the detent 427 by pulling the rear wheel side wire 213 by the ratchet plate 424.

When the tilt angle of the road becomes higher, the rear wheel sprocket transmission 212 is shifted at a low speed by continuously pulling the straight ratchet 426 by the protruding touch 428. [

On the contrary, when the ratchet plate 424 is pulled up to the high-speed gear-shifting mode, the rear wheel-side wire 213 is moved in the direction of unwinding by the restoring force of the spring 430. [

In other words, when the state of the road is folded on the flat or downhill path, the electric power is supplied to the a electromagnet 221 by the inclination sensor 251 and the power control unit 250, so that a magnetic force is generated in the electromagnet 221, The slide lever 423 is rotated by the magnetic force about the center axis 423 'to the upper left side.

When the upper portion of the slide lever 423 is pivoted to the left, the cam plate 456 is slid to the right while rotating around the cam shaft 255 by the slide key 458, and the cam protrusion 457 is rotated And touches the detent 427.

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

The linear ratchet 426 restrained by the detent 427 is moved in the direction opposite to the pulling direction of the rear wheel side wire 213 by the restoring force of the spring 430 and the rear wheel sprocket transmission 212 Is a high gear.

The stop sensor 417 recognizes the unit of the stopper 418 and cuts off the power supply of the electromagnet in the power control unit 250. [

Here, the driving-side speed change portion 440 is the same as the above-described rear wheel speed change portion 420 of the present invention, only the difference in the number of the linear ratchet 426 and the driven protrusion 424 ' do.

The ratchet plates 424 and 444 of the rear wheel side speed change portion 420 and the drive side speed change portion 440 configured as described above are slidably moved forward and rearward and slide grooves 425 in which the fixed panel 425 ' And the fixing panel 425 'is fitted in 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 supported by the fixed panel 425 'fitted in the slide groove 425, .

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

205: drive shaft 206: drive shaft cylinder
207: first gear 208: second gear
209: drive sprocket 210: chain
211: Driving sprocket transmission 212: Rear sprocket transmission
213: rear wheel side wire 214: driving side wire
215: drive side button 216: rear wheel side button
217: stop sensor 218: stopper
219: rear wheel sprocket 220: rear wheel side speed changing portion
221: a electromagnet 222: b electromagnet
223: First speed change terminal 223 ': Terminal shaft
223 ": spring 224: stone substrate
224 ': driven projection 225: first shift pulley
226: circular ratchet 227: detent
228: protrusion touch 229: protrusion
229a: left projection 229b: right projection
230: separator plate 240: drive side transmission portion
241: a electromagnet 242: b electromagnet
243: Second speed change terminal 243 ': Terminal shaft
243 ": spring 244: stone substrate
244 ': driven projection 245: second shift pulley
246: circular ratchet 247: detent
248: protrusion touch 249: protrusion
249a: left projection 249b: right projection
250: power supply control unit 255: cam shaft
256: cam plate 257: cam projection
310: center shaft 317: stop sensor
318: Stopper 320: rear wheel speed change portion
323: Slide lever 323 ': Center axis
324: spring 325: 1st shift pulley
326: circular ratchet 327: detent
328: detent tail 340: drive side transmission portion
343: Slide lever 343 ': Center axis
344: spring 345: second shift pulley
346: circular ratchet 347: detent
348: detent tail 356: cam plate
357: Cam protrusion 358: Spring
417: stop sensor 418: stopper
423: slide lever 423 ': center axis
423 ": spring 423a: rail
424: ratchet plate 424 ': driven projection
425: Slide groove 425 ': Fixed panel
426: linear ratchet 427: detent
428: projection touch 429: touch lever
430: spring 443: slide lever
443 ': center shaft 443'': spring
443a: rail 444:
444 ': Passive projection 445: Slide groove
446: linear ratchet 447: detent
448: protrusion touch 449: touch lever
456: cam plate 457: cam projection
458: Slide key

Claims (12)

A rear wheel sprocket transmission 212 that moves the chain 210 to any one of a plurality of rear wheel sprockets 219 provided on the rear wheel axle of the bicycle and a plurality of drive sprockets 209 that are installed on the drive shaft 205 of the bicycle. 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, ), Characterized in that the electronic control system comprises:
A cam shaft 255 on which a second gear 208 coupled with the first gear 207 axially installed on the drive shaft 205 rotates;
A rear wheel side speed changing portion that winds or releases the rear wheel side wire 213 using the magnetic force generated by the pair of electromagnets 221 and 222 and the rotational force of the cam shaft 255;
A drive-side transmission portion that winds or loosens the drive-side wire 214 by using a magnetic force generated by the pair of electromagnets 241 and 242 and a rotational force of the camshaft 255; And
A power control unit for selectively supplying power to the electromagnets (221, 222) (241, 242) of the rear wheel side speed changing unit and the driving side speed changing unit;
And an electronic control system for a bicycle.
The method according to claim 1,
The rear wheel side speed change portion and the drive side transmission portion select the gear ratio according to the inclination of the road,
A variable speed pulley 225 (hereinafter, referred to as a " pulley ") that is provided with power from the drive shaft 205 and rotated by the magnetic force of the electromagnets 221 and 222 (241 and 242) Characterized in that the detents (227) and (247) of the circular ratchet (226) and (246) of the pinion (245) are constrained or constrained by the detents (227) and (247).
The method according to claim 1,
The rear-
A cam plate 256 formed on the cam shaft 255 and having at least one cam protrusion 257 formed therein;
A protrusion 229 having a left protrusion 229a and a right protrusion 229b which are selectively in contact with the cam protrusion 257;
Each time the cam protrusion 257 of the cam plate 256 contacts the right protrusion 229b of the protrusion 229, the protrusion 224 'pushes the driven protrusion 224' so that the protrusion 224 rotates by one pitch Touch 228;
The a electromagnet 221 connected to the protruding portion 229 and the protruding touch 228 and spaced apart from the electromagnet 221 and the electromagnet 222 arranged between the electromagnet 222 and the electromagnet A first speed change terminal (223) that is brought into contact with an uphill road by a magnetic force of the a electromagnet (221);
The stone substrate 224 integrally coupled to the a electromagnet 221 and having a plurality of the driven protrusions 224 'along the inner side edge thereof;
A circular ratchet 226 integrally formed with the b electromagnet 222 and having a ratchet gear formed on an outer circumferential surface thereof and allowing gear shifting to be performed at a high speed when the restraint is released on the downward path;
A first shift pulley 225 wound on the rear wheel side wire 213 at an uphill road and integrally formed with the stone substrate 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 come into contact with each other;
When the cam protrusion 257 and the left protrusion 229a of the protrusion 229 are brought into contact with each other by the right protrusion 229b, the circular ratchet 226 is rotated by one pitch A detent 227 for rotating and gearing; And
A stopper 218 and a stop sensor 217 for shutting off the power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road;
And an electronic control system for a bicycle.
The method of claim 3,
The first speed change terminal 223 is provided with terminal shafts 223 'on both sides thereof and a spring 223' is installed to be positioned at the center of the electromagnets 221 and 222, respectively. Of the transmission.
The method according to claim 1,
The rear wheel side shift portion is automatically shifted by the control processor according to the inclination of the road so that the gear shift ratio to match the leg force of the driver can be reset,
Wherein the drive-side speed change portion includes a drive-side button (215) for shifting the gear according to a selection of the driver.
The method according to claim 1,
Wherein the power control unit selectively applies power to the electromagnets (221, 222) (241, 242) after a predetermined delay time elapses after receiving the signal of the tilt sensor .
The method according to claim 1,
Wherein the control processor is configured such that the rear-wheel-side speed change portion first shifts to a low speed and the drive-side shift portion later shifts to a low speed so as to increase the leg force of the driver when shifting at a low speed.
The method according to claim 1,
The rear-wheel speed change portion 320,
A slide lever 323 pivoting about the central axis 343 'in the lateral direction by the magnetic force of the electromagnets 221 and 222;
A cam plate 356 formed with at least one cam protrusion 357 and rotating together with the cam shaft 255 and moving laterally as the slide lever 323 rotates;
A circular ratchet 326 is formed so as to rotate by one pitch in a direction to selectively pull the cam protrusion 357 and pull the rear wheel side wire 213 every time the cam protrusion 357 contacts, A first shift pulley 325 for winding or unwinding the side wire 213;
The first shift pulley 325 is constrained so that the first shift pulley 325 rotates by one pitch in a direction that releases the rear wheel side wire 213 every time the cam protrusion 357 contacts, A detent tail 328 and a detent 327 for restraining or restraining the ratchet 326; And
A stopper 418 and a stop sensor 417 for shutting off power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road;
And an electronic control system for a bicycle.
9. The method of claim 8,
The camshaft 255 has a spring that resiliently supports both sides of the cam plate 356 so that the cam plate 356 sliding left and right is positioned between the circular ratchet 326 and the detent tail 328. [ (358). ≪ / RTI >
10. The method of claim 9,
Characterized in that the detent tail is formed on the side surface of the pawl so as to secure a distance when the cam protrusion (357) slides left and right to perform a high-speed gear change or a low-speed gear change. Of the transmission.
The method according to claim 1,
The rear-
A slide lever 423 which rotates left and right around the central axis 443 'by the magnetic force of the electromagnets 221 and 222;
A cam plate 456 having one or more cam protrusions 457 formed therein and rotating together with the cam shaft 255 and moving left and right as the slide lever 423 is rotated;
A ratchet plate 424 having a plurality of driven projections 424 'and a linear ratchet 426 formed in the longitudinal direction and pulling or releasing the rear wheel side wire 213;
Each of the cam protrusions 457 is formed with a touch lever 429 to selectively contact the cam protrusion 457 so that the ratchet plate 424 contacts the rear wheel side wire 213 A protrusion touch 428 for pushing the driven protrusion 424 'so as to move by one pitch in a direction to pull out the driven protrusion 424';
The ratchet plate 424 restrains the linear ratchet 426 and moves the cam protrusion 457 so that the ratchet plate 424 moves by one pitch in the direction of releasing the rear wheel side wire 213. [ A detent (427) for releasing the restraint of the linear ratchet (426) by the ratchet (426); And
A stopper 418 and a stop sensor 417 for shutting off power supplied to the electromagnets 221 and 222 when the gear shifting is completed according to the slope of the road;
And an electronic control system for a bicycle.
12. The method of claim 11,
Characterized in that the ratchet plate (424) is arranged in a row and is slid forward and rearward, and a slide groove (425) in which the fixed panel (425 ' .

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