KR101955118B1 - Power transmission device of a bike that moves by the movement of the arms and legs - Google Patents

Abstract

The present invention forms two power transmitting portions on each axis by forming a portion of transmitting power generated by pulling a handle and a portion of transmitting power generated by turning pedals on one axis, has a simpler structure than a known invention coupling power thereto though a pair of gears, and has no gear, thereby being simply manufactured and being no power loss by the gear.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device for a bicycle,

The present invention relates to the "power transmission portion 40" of the prior art Patent Application No. 10-2017-0044527 (a bicycle moving by the strength of the arms and legs)

The power transmission device corresponding to the "pulling-cord power transmission portion 315" and the "pedal power transmission portion 325" of the patent application No. 10-2017-0108404 (a two-wheeled bicycle moving by the strength of the arms and legs) To a power transmission device that transmits power generated by the muscular force of the arms and legs to the bicycle wheel, which improves the power transmission efficiency by reducing the power transmission steps.

The prior art power transmission device includes a portion that transmits power generated by pulling the handle (see "Pull Chain Ring (41)" of Patent Application No. 10-2017-0044527 and "Pull Chain Ring (41)" of Patent Application No. 10-2017-0108404 Quot; pedal chain portion 42 "of Patent Application No. 10-2017-0044527, and a portion" pedal power transmission " of Patent Application No. 10-2017-0108404), which transmits power generated by turning the pedal Quot; portion 325 ") are separated by respective axes, and the two power generating portions are coupled to each other by a pair of spur gears to transmit power, so that the structure is complicated and power loss by the gear medium occurs .

The present invention is characterized in that a portion for transmitting the power generated by pulling the handle and a portion for transmitting the power generated by turning the pedal are formed on one shaft to simplify the structure and not use the gear for coupling the power, It is a structure without power loss.

Patent Application No. 10-2017-0044527 "Bicycle running on the strength of arms and legs" Patent Application No. 10-2017-0108404 "Two-wheeled bicycle moving by the strength of arms and legs"

In the prior art, a part for transmitting the power generated by pulling the handle is constituted on one shaft, a part for transmitting the power generated by turning the pedal is constituted on a separate shaft, and a part for transmitting two power And is coupled by a pair of spur gears, so that the structure is complicated and power loss due to gear engagement is essential.

The pulley shaft 433 is inserted into the shaft insertion hole 10 at the rear end of the pulley box part 100 of the main frame 300 and joined to the side of the chain ring holder 430, The wire pulley 431 is inserted into one end of the shaft 433 and inserted into the left side of the chainring holder 430 and then engaged with the pulley shaft 433 in the order of the spring 6 and the pulley spring support 438. [ And a pedal clutch 432 and a spring 6 are inserted and coupled to the left side of the wire pulley 431 in the order of the spring 6 and the clutch part 120. The clutch part 120 is connected to the pulley part 110 And the auxiliary pulley part 130 is coupled to the front half of the pulley box part 100

The power generated by pulling the pulling wire 902 connected to the handle is coupled with the power generated by turning the crank 470 and transmitted to the main body ring portion 900 through the connecting chain 901 to rotate the wheel.

By constructing the part that transmits the power generated by pulling the handle and the part that transmits the power generated by turning the pedal on one axis

There is an effect that the structure is simple and the power loss due to the gears is less than the prior art in which the two power generating portions are conventionally formed on the respective shafts and the power is coupled by the pair of gears.

The full view of the first and second bikes
2 is a perspective view of the pulley box portion 100,
3 is an assembled view and an exploded view of the pulley portion 110 and the clutch portion 120,
4 is an assembled view and exploded view of the auxiliary pulley portion 130. FIG.
5 is a front view, a plan view, a perspective view of the pulley box portion 100 of the main frame 300,
6 is a front view, a cross-sectional view, and a perspective view of the pulley box chainring holder 430;
7 shows a front view, a cross-sectional view, a perspective view and a partial detail view of the wire pulley 431
8 shows a front view, a side view, a cross-sectional view, a perspective view, and a partial detail view of the pedal clutch 432
9 is a front view, a cross-sectional view, and a perspective view of the pulley shaft 433;
10 is a front view, a plan view, a side view, and a perspective view of the clutch handle 434;
11 shows a front view, a top view, a side view, and a perspective view of the clutch handle support 436
12 is a front view, a plan view, a side view, and a perspective view of the clutch handle pushing chain 437;
13 is a front view, a top view, a side view, and a perspective view of a pulley spring support 438
14 shows a front view, a side view, and a perspective view of the auxiliary pulley 460,
15 is a front view of the auxiliary pulley shaft 461,
FIG. 16 is a front view, a plan view, a side view, and a perspective view of the auxiliary pulley support 463. FIG.

In order to explain the concrete contents of the present invention, the contents of the drawings will be explained concretely, and a part of the bicycle which is not included in the present invention is required to be described in detail in Patent Application No. 10- 2017-0044527 " Bicycles moving with the strength of the arms and legs ", and Patent Application No. 10-2017-0108404 "Two-wheeled bicycles driven by the strength of the arms and legs ".

1 is an overall perspective view of a bicycle showing the overall configuration of a bicycle in which a pulley box portion 100, which is a power transmission device of the present invention, is used

The pulley box part 100 couples the power generated by pulling the pulling wire 902 connected to the handle with the power generated by turning the crank 470 and transmits the combined power to the main body ring part 900 through the connecting chain 901 It is a power transmission device that turns the wheels.

2 is a perspective view of the pulley box part 100. The pulley box part 100 includes a pulley part 110, a clutch part 120 and an auxiliary pulley part 130

The pulley part 110 is coupled to the rear end of the pulley box part 100 of the main frame 300 by a pulley shaft 433 fitted into the shaft insertion hole 10,

The clutch portion 120 is inserted into and engaged with the clutch handle support 436 at the upper portion of the pulley portion 110 and the clutch handle support 436 is fixedly coupled to the main frame 300 with the bolts 3,

The auxiliary pulley part 130 is fixed to the shaft insertion hole 10 of the auxiliary pulley support part 463 by the bolt 3 and the auxiliary pulley support part 463 is fixed to the front part of the pulley box part 100, Respectively.

A pedal clutch 432, a wire pulley 431, a chain ring holder 430 and a chain ring 405 are inserted in this order into the pulley shaft 433,

The pedal clutch 432 engages with the pulley shaft 433 and rotates when the crank 470 of the bicycle is engaged with the grooves of the shaft insertion hole 10 of the pedal clutch 432 and the grooves formed in the pulley shaft 433, ,
The wire pulling wire 902 is wound on the wire pulley 431 in a state where the cylindrical shaft of the pedal clutch 432 is inserted into the hole in the center of the wire pulley 431 so that the wire pulling or pushing the handle pulls the wire pulling wire 902 The wire pull wire 902 rotates the wire pulley 431,
The chainring holder 430 is inserted into the center hole of the chainring holder 430 and inserted into the pulley shaft 433 so that the chainring holder 430 can rotate around the pulley shaft 433,
The triangular protrusions 15 of the pedal clutch 432 and the right triangular prism protrusions 15 of the chain ring holder 430 engage only when they are engaged with each other and return in a predetermined direction, The right angled triangular prism protrusion 15 of the chain ring holder 430 also functions as a freewheel which engages only when it returns in a predetermined direction,
The chain ring 405 and the chain ring holder 430 are fixedly coupled to the center of the chain ring 405 and the center of the chain ring holder 430 by bolts 3 and a chain ring nut 442, When the ring holder 430 rotates, the chain ring 405 rotates together to transmit the power so that the bicycle can be moved forward by the chain hooked to the chain ring 405,

When the pulling wire 902 is pulled by the pulling wire 902 on the auxiliary pulley part 130, the rotation direction of the wire pulley 431 is rotated in the direction in which the bike moves forward,

The clutch portion 120 is configured such that the clutch handle 434 fits slightly on the side circular plate of the pedal clutch 432 and the side circular plate of the wire pulley 431 and presses the clutch handle pushbutton 437, The clutch handle 434 and the wire pulley 431 are pushed laterally due to the thickness of the semicircular portion of the clutch handle 434 being thickened so that the pedal clutch 432 and the chainring holder 430 and The distance between the wire pulley 431 and the right angled triangular prism protrusions 15 to which the chain ring holder 430 is engaged is remote from each other,

The power generated by pulling the pull wire wire 902 connected to the handle rotates the wire pulley 431 and the power generated by turning the crank 470 rotates the pedal clutch 432, 431 and the pedal clutch 432 rotate the chain ring holder 430 and the chain ring 405 to transmit the rotation to the main body ring portion 900 through the connecting chain 901 to rotate the wheels.

3 is an assembly view and an exploded view of the pulley portion 110 and the clutch portion 120

The pulley portion 110 includes a chain ring 405, a chain ring holder 430, a wire pulley 431, a pedal clutch 432, a pulley shaft 433, a pulley spring support 438, a chain ring nut 442, A bearing 1, a retaining ring 2, a bolt 3, a washer 5, and a spring 6, as shown in Fig.

The bearing 1 and the retaining ring 2 are inserted and coupled to the bearing insertion port 12 and the retaining ring insertion port 13 of the chainring holder 430 and the chainring 405 Is inserted into one end portion of the pulley shaft 433 in a state of being engaged by the chain nut 442 and the bolt 3

The retaining ring 2 inserted in the retaining ring insertion port 13 of the pulley shaft 433 is formed in such a manner that the chainring holder 430 freely rotates about the pulley shaft 433 and does not move left and right in the axial direction And then,

The bearing 1 and the retaining ring 2 are inserted into the bearing insertion port 12 and the retaining ring insertion port 13 of the wire pulley 431

Inserted into the left side of the chainring holder 430 inserted into the pulley shaft 433 and then engaged with the pulley shaft 433 in the order of the spring 6 and the pulley spring support 438, 438 are fixed to the main frame 300 with bolts 3 so that the wire pulley 431 is freely rotatable about the axis of the pulley shaft 433 and freely movable in the left and right direction of the shaft, The pulley 431 is pushed toward the chainring holder 430 so that the wire pulley 431 and the right triangular prism protrusion 15 of the chainring holder 430 are brought into close contact with each other to pull the pulling wire wire 902, When the wire pulley 431 is rotated in the opposite direction, the slope portion of the triangular pyramid slides in contact with the chainring holder 430, The holder 430 It gives the so communicated,

A pedal clutch 432 and a spring 6 are inserted and coupled to the left side of the wire pulley 431 and the spring 6 in the axial direction of the pulley shaft 433,

The groove of the pulley shaft 433 and the groove of the shaft insertion port 10 of the pedal clutch 432 are engaged with each other so that the pedal clutch 432 freely moves in the left and right direction of the shaft while the spring 6 rotates together with the pedal clutch 432, The right angled triangular prism protrusion 15 of the chain ring holder 430 and the right triangular prism protrusion 15 of the chain ring holder 430 are pressed so that the crank 470 is rotated to rotate the pulley shaft 433, When the clutch 432 rotates in either direction, the right angle side of the triangular horn abuts to allow the chainring holder 430 to rotate together, and when the pedal clutch 432 rotates in the opposite direction, So that the chainring holder 430 is prevented from rotating,

The bearing 1 is inserted into both ends of the pulley shaft 433 and is coupled to the shaft insertion port 10 of the main frame 300 so that the pulley shaft 433 freely rotates.

The clutch portion 120 includes a clutch handle 434, a clutch handle support 436, a clutch handle push block 437, a bolt 3, and a spring 6,

The clutch handle support 436 is fixed to the main frame 300 by the bolts 3 and the clutch handle 434 is inserted into the clutch handle insertion port 20 of the clutch handle support 436, And the pedal clutch 432, the semicircular ring portion of each clutch handle 434 is located and moves up and down

The semicircular ring portion of the clutch handle 434 is moved downward to push the wire pulley 431 and the pedal clutch 432 to the left side so that the wire pulley 431 and the wire pulley 431, It is possible to separate the right angled triangular prism protrusion 15 of the chain ring holder 430 and to separate the right pedal clutch 432 and the right triangular prism protrusion 15 of the chain ring holder 430 from each other, The power and the rotational power by the crank 470 are not transmitted

The clutch handle engaging projection 18 in the clutch handle 434 when the clutch handle pushing chain 437 is pressed is engaged with the clutch handle engaging groove 16 formed in the protruding disk of the wire pulley 431 and the pedal clutch 432, And the clutch handle presser chain 437 is held pressed so that the wire harness wire 902 is pulled to rotate the wire pulley 431 or rotate the pedal clutch 432 by turning the crank 470 The portion of the clutch handle retaining groove 16 where the clutch handle retaining groove 16 is not engaged releases the engagement state of the clutch handle retaining projection 18 so that the clutch handle pushing chain 437 is released by the restoring force of the spring 6 of the clutch handle pressing chain 437 It is released from the pressed state.

4 is an assembled view and exploded view of the auxiliary pulley 130

The auxiliary pulley portion 130 includes an auxiliary pulley 460, an auxiliary pulley shaft 461, an auxiliary pulley support 463, a bearing 1, a retaining ring 2, and a bolt 3,

The auxiliary pulley support 463 is fixed to the front end portion of the pulley box portion 100 by the bolts 3 and the auxiliary pulley 460 is fixed to the bearing insertion port 12 and the retaining ring insertion port 13 with the bearings 1, The inner ring 2 is inserted and is positioned below the auxiliary pulley support 463 and inserted and coupled to the auxiliary pulley shaft 461 while the retaining ring insertion hole 13 of the auxiliary pulley shaft 461 is fitted with a retaining ring 2 is inserted so that the auxiliary pulley 460 is fixed in the left and right direction of the shaft and freely rotates and the auxiliary pulley 460 switches the direction of the pulling wire 902 when pulling the pulling wire 902, 431 rotate in the direction in which the bicycle advances.

5 is a front view, a plan view, and a perspective view of the pulley box portion 100 of the main frame 300

A bolt insertion hole 11 is formed in the front side of the side surface of the box so that the auxiliary pulley support 463 is fixed by the bolt 3 and the auxiliary pulley shaft 461 is inserted and coupled to the rear end of the side. The bolt insertion port 11 is drilled so that the shaft insertion port 10 and the pulley spring support 438 are fixed by the bolts 3 and the bolt 3 is engaged with the clutch handle support 436, (11) is pierced.

6 is a front view, a cross-sectional view, and a perspective view of the chainring holder 430

The chain ring holder 430 has a disk shape and a right angled triangular prism protrusion 15 protrudes from a side surface thereof. The bearing insert hole 12 and the retaining ring insertion hole 13 are formed at the center of the chain ring holder 430, 442 and the bolt 3 are inserted in a circular shape.

7 shows a front view, a sectional view, a perspective view and a partial detail view of the wire pulley 431

In the wire pulley 431, a rectangular triangular prism protrusion 15 is protruded and protruded on the side surface of the cylindrical plate, a disc jaw is protruded on the other side, and a clutch handle engaging groove 16 is formed on the inner surface of the disc jaw And a wire insertion groove 12 and a retaining ring insertion hole 13 are formed in a central portion of the groove.

8 shows a front view, a side view, a cross-sectional view, a perspective view, and a partial detail view of the pedal clutch 432

The pedal clutch 432 has a circular plate-shaped protrusion 15 protruding from the side surface of the circular plate and protruding from the other side of the pedal clutch 432. The clutch handle latching groove 16 is formed on the inner surface of the circular plate- And a shaft insertion hole 10 is formed in the center portion.

9 is a front view, a cross-sectional view, and a perspective view of the pulley shaft 433

The pulley shaft 433 is a shaft of a circular rod, and a groove of the retaining ring insertion hole 13 is formed on the surface of the rod and grooves are formed so that the shaft and the rotating body inserted into the shaft rotate together.

10 is a front view, a plan view, a side view, and a perspective view of the clutch handle 434

The clutch handle 434 has two pillars projecting from the semicircular ring, the semicircular ring having a tapered structure, and a clutch handle engaging protrusion 18 protruding from the side of the semicircular ring.

11 shows a front view, a top view, a side view, and a perspective view of the clutch handle support 436

The clutch handle support 436 is of a shape and has a clutch handle insertion port 20 so that the clutch handle 434 is inserted into the upper surface thereof, a spring insertion hole 19 is formed at the center thereof, and a bolt insertion port 11 is formed at the side thereof. And is fixed to and coupled to the main frame 300 with bolts 3.

12 is a front view, a plan view, a side view, and a perspective view of the clutch handle pushing chain 437

The clutch handle presser chain 437 has a circular plate protruding from one side of the square plate, and a clutch handle insertion port 20 and a bolt insertion port 11 are formed on the lower side

13 is a front view, a top view, a side view, and a perspective view of a pulley spring support 438

The pulley spring support 438 is circularly drilled at the center of the square plate and has a bolt insertion hole 11 formed on the right side surface of the bolt insertion hole 11 in the "a" shape.

14 shows a front view, a side view and a perspective view of the auxiliary pulley 460

The auxiliary pulley 460 has a bearing inserting hole 12 and a retaining ring inserting hole 13 at the center of the column and a groove is formed around the column so that a pulling wire retraction groove 17 can be sensed.

15 is a front view and a plan view of the auxiliary pulley shaft 461

The auxiliary pulley shaft 461 has grooves of a plurality of retaining ring insertion openings 13 in a circular rod.

FIG. 16 is a front view, a plan view, a side view, and a perspective view of the auxiliary pulley support 463

The auxiliary pulley support member 463 is formed in a semicircular shape in the right and left sides of the square plate, and has a bolt insertion hole 11 at its center and an axis insertion hole 10 at its center.

1: Bearings
2: Retaining ring
3: Bolt
4: Nut
5: Washer
6: Spring
10: Axis insertion hole
11: Bolt insertion hole
12: Bearing insert
13: Retaining ring insertion port
15: Right triangular prism protrusion
16: Clutch handle engagement groove
17: Wire pulling wire
18: clutch handle engaging projection
19: spring insertion port
20: Clutch handle opening
100: pulley box part
110: Pulley portion
120:
130: auxiliary pulley portion
300: main frame
405: chainring
430: Pulley box chainring holder
431: Wire pulley
432: Pedal clutch
433: Pulley shaft
434: clutch handle
436: Clutch handle support
437: Clutch handle pushing
438: Pulley spring support
442: Chainring nut
460: auxiliary pulley
461: Auxiliary pulley shaft
463: auxiliary pulley support
470: Crank
900: Subject Ringsh
901: Connection chain
902: wire pulling wire
903: Elastic strip

Claims (4)

The pulley box part 100, which is a power transmission device of the bicycle according to the present invention, includes a pulley part 110, a clutch part 120, and an auxiliary pulley part 130
The pulley portion 110 has a pulley shaft 433 fitted to the rear end portion of the pulley box portion 100 of the main frame 300 so as to be fitted into the shaft insertion hole 10,

The clutch portion 120 is inserted into and engaged with the clutch handle support 436 at the upper portion of the pulley portion 110 and the clutch handle support 436 is fixedly coupled to the main frame 300 with the bolts 3,
The auxiliary pulley part 130 is fixed to the shaft insertion hole 10 of the auxiliary pulley support part 463 by the bolt 3 and the auxiliary pulley support part 463 is fixed to the front part of the pulley box part 100, Respectively,

A pedal clutch 432, a wire pulley 431, a chain ring holder 430 and a chain ring 405 are inserted in this order into the pulley shaft 433,

The pedal clutch 432 engages with the pulley shaft 433 and rotates when the crank 470 of the bicycle is engaged with the grooves of the shaft insertion hole 10 of the pedal clutch 432 and the grooves formed in the pulley shaft 433, ,
The wire pulling wire 902 is wound on the wire pulley 431 in a state where the cylindrical shaft of the pedal clutch 432 is inserted into the hole in the center of the wire pulley 431 so that the wire pulling or pushing the handle pulls the wire pulling wire 902 The wire pull wire 902 rotates the wire pulley 431,
The chainring holder 430 is inserted into the center hole of the chainring holder 430 and inserted into the pulley shaft 433 so that the chainring holder 430 can rotate around the pulley shaft 433,
The triangular protrusions 15 of the pedal clutch 432 and the right triangular prism protrusions 15 of the chain ring holder 430 engage only when they are engaged with each other and return in a predetermined direction, The right angled triangular prism protrusion 15 of the chain ring holder 430 also functions as a freewheel which engages only when it returns in a predetermined direction,
The chain ring 405 and the chain ring holder 430 are fixedly coupled to the center of the chain ring 405 and the center of the chain ring holder 430 by bolts 3 and a chain ring nut 442, When the ring holder 430 rotates, the chain ring 405 rotates together to transmit the power so that the bicycle can be moved forward by the chain hooked to the chain ring 405,

When the pulling wire 902 is pulled by the pulling wire 902 on the auxiliary pulley part 130, the rotation direction of the wire pulley 431 is rotated in the direction in which the bike moves forward,
The clutch portion 120 is configured such that the clutch handle 434 fits slightly on the side circular plate of the pedal clutch 432 and the side circular plate of the wire pulley 431 and presses the clutch handle pushbutton 437, The clutch handle 434 and the wire pulley 431 are pushed laterally due to the thickness of the semicircular portion of the clutch handle 434 being thickened so that the pedal clutch 432 and the chainring holder 430 and The distance between the wire pulley 431 and the right angled triangular prism protrusions 15 to which the chain ring holder 430 meshes is long and serves as a clutch for preventing coupling between the wire pulley 431 and the chain ring holder 430,

The power generated by pulling the pull wire wire 902 connected to the handle rotates the wire pulley 431 and the power generated by turning the crank 470 rotates the pedal clutch 432, The pedal clutch 431 and the pedal clutch 432 rotate the chain ring holder 430 and the chain ring 405 to transmit the rotation to the main body ring portion 900 through the connecting chain 901, Power transmission of a bicycle moving by the strength of the arms and legs
The method according to claim 1,
The pulley portion 110 includes a chain ring 405, a chain ring holder 430, a wire pulley 431, a pedal clutch 432, a pulley shaft 433, a pulley spring support 438, a chain ring nut 442, A bearing 1, a retaining ring 2, a bolt 3, a washer 5 and a spring 6,

The chain ring holder 430 has a disk shape and a right angled triangular prism protrusion 15 protrudes from a side surface thereof. The bearing insert hole 12 and the retaining ring insertion hole 13 are formed at the center of the chain ring holder 430, 442 and the holes into which the bolts 3 are inserted are circularly arranged,

In the wire pulley 431, a rectangular triangular prism protrusion 15 is protruded and protruded on the side surface of the cylindrical plate, a disc jaw is protruded on the other side, and a clutch handle engaging groove 16 is formed on the inner surface of the disc jaw And a wire insertion groove 12 and a retaining ring insertion hole 13 are formed at the center of the wire groove.

The pedal clutch 432 has a circular plate-shaped protrusion 15 protruding from the side surface of the circular plate and protruding from the other side of the pedal clutch 432. The clutch handle latching groove 16 is formed on the inner surface of the circular plate- A part of the groove is formed, and the shaft insertion hole 10 is formed in the center part,

The pulley shaft 433 is a shaft of a circular rod. The groove of the retaining ring insertion hole 13 is formed on the surface of the rod, and the shaft is rotatably engaged with the rotating body.

The pulley spring support 438 is formed in a circular shape at the center of the square plate and has a "b" shape and a bolt insertion hole 11 formed on the right side surface thereof.

The bearing 1 and the retaining ring 2 are inserted and coupled to the bearing insertion port 12 and the retaining ring insertion port 13 of the chainring holder 430 and the chainring 405 Is inserted into one end portion of the pulley shaft 433 in a state of being engaged by the chain nut 442 and the bolt 3
The retaining ring 2 inserted in the retaining ring insertion port 13 of the pulley shaft 433 is formed in such a manner that the chainring holder 430 freely rotates about the pulley shaft 433 and does not move left and right in the axial direction And then,

The bearing 1 and the retaining ring 2 are inserted into the bearing insertion port 12 and the retaining ring insertion port 13 of the wire pulley 431
Inserted into the left side of the chainring holder 430 inserted into the pulley shaft 433 and then engaged with the pulley shaft 433 in the order of the spring 6 and the pulley spring support 438, 438 are fixed to the main frame 300 with bolts 3 so that the wire pulley 431 is freely rotatable about the axis of the pulley shaft 433 and freely movable in the left and right direction of the shaft, The pulley 431 is pushed toward the chainring holder 430 so that the wire pulley 431 and the right triangular prism protrusion 15 of the chainring holder 430 are brought into close contact with each other to pull the pulling wire wire 902, When the wire pulley 431 is rotated in the opposite direction, the slope portion of the triangular pyramid slides in contact with the chainring holder 430, The holder 430 It gives the so communicated,

A pedal clutch 432 and a spring 6 are inserted and coupled to the left side of the wire pulley 431 and the spring 6 in the order of the pulley shaft 433.
The groove of the pulley shaft 433 and the groove of the shaft insertion port 10 of the pedal clutch 432 are engaged with each other so that the pedal clutch 432 freely moves in the left and right direction of the shaft while the spring 6 rotates together with the pedal clutch 432, The triangular prism protrusion 15 of the chain ring holder 430 and the right triangular prism protrusion 15 of the chain ring holder 430 are pressed tightly
When the pedal clutch 432 rotates and the pedal clutch 432 rotates in either direction when the pulley shaft 433 is rotated by rotating the crank 470, the right- And when the pedal clutch 432 rotates in the opposite direction, the slopes of the triangular horns abut against each other to slip to prevent the chainring holder 430 from rotating,

The bearing 1 is inserted into both ends of the pulley shaft 433 and is engaged with the shaft insertion port 10 of the main frame 300 so that the pulley shaft 433 rotates freely. Power train of bicycle moving by
The method according to claim 1,
The clutch portion 120 includes a clutch handle 434, a clutch handle support 436, a clutch handle push block 437, a bolt 3, and a spring 6,

The clutch handle 434 has a structure in which two columns are projected on a semicircular ring, a semicircular ring is tapered, and a clutch handle engaging projection 18 protrudes on a side surface of the semicircular ring,

The clutch handle support 436 is of a shape and has a clutch handle insertion port 20 so that the clutch handle 434 is inserted into the upper surface thereof, a spring insertion hole 19 is formed at the center thereof, and a bolt insertion port 11 is formed at the side thereof. And is fixed to the main frame 300 with the bolts 3,

The clutch handle presser chain 437 has a circular plate protruding from one side of the square plate and has a clutch handle insertion port 20 and a bolt insertion port 11 formed on the lower side.

The clutch handle support 436 is fixed to the main frame 300 by the bolts 3 and the clutch handle 434 is inserted into the clutch handle insertion port 20 of the clutch handle support 436, And the pedal clutch 432, the semicircular ring portion of each clutch handle 434 is located and moves up and down
The semicircular ring portion of the clutch handle 434 is moved downward to push the wire pulley 431 and the pedal clutch 432 to the left side so that the wire pulley 431 and the wire pulley 431, It is possible to separate the right angled triangular prism protrusion 15 of the chain ring holder 430 and to separate the right pedal clutch 432 and the right triangular prism protrusion 15 of the chain ring holder 430 from each other, The power and the rotational power by the crank 470 are not transmitted
The clutch handle engaging projection 18 in the clutch handle 434 when the clutch handle pushing chain 437 is pressed is engaged with the clutch handle engaging groove 16 formed in the protruding disk of the wire pulley 431 and the pedal clutch 432, And the clutch handle presser chain 437 is held pressed so that the wire harness wire 902 is pulled to rotate the wire pulley 431 or rotate the pedal clutch 432 by turning the crank 470 The portion of the clutch handle retaining groove 16 where the clutch handle retaining groove 16 is not engaged releases the engagement state of the clutch handle retaining projection 18 so that the clutch handle pushing chain 437 is released by the restoring force of the spring 6 of the clutch handle pressing chain 437 And the bicycle is released from the state of being pressed.
The method according to claim 1,
The auxiliary pulley portion 130 includes an auxiliary pulley 460, an auxiliary pulley shaft 461, an auxiliary pulley support 463, a bearing 1, a retaining ring 2, and a bolt 3,

The auxiliary pulley 460 has a bearing inserting hole 12 and a retaining ring inserting hole 13 at the center of the column and a groove is formed around the column so that the pulling wire retention groove 17 can be sensed.

The auxiliary pulley shaft 461 has a structure in which a plurality of retaining ring insertion holes 13 are formed in the circular rod,

The auxiliary pulley support member 463 is formed in a semicircular shape in the right and left sides of the square plate and has a bolt insertion hole 11 at the center thereof and an axis insertion hole 10 at the center of the cylindrical shape

The auxiliary pulley support 463 is fixed to the front end portion of the pulley box portion 100 by the bolts 3 and the auxiliary pulley 460 is fixed to the bearing insertion port 12 and the retaining ring insertion port 13 with the bearings 1, The inner ring 2 is inserted and is positioned below the auxiliary pulley support 463 and inserted and coupled to the auxiliary pulley shaft 461 while the retaining ring insertion hole 13 of the auxiliary pulley shaft 461 is fitted with a retaining ring 2 is inserted so that the auxiliary pulley 460 is fixed in the left and right direction of the shaft and freely rotates and the auxiliary pulley 460 switches the direction of the pulling wire 902 when pulling the pulling wire 902, 431) is rotated in the direction in which the bicycle is going to advance. The power transmission device

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