KR101538638B1 - Power transmission device according to the reciprocating gear - Google Patents

Power transmission device according to the reciprocating gear Download PDF

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Publication number
KR101538638B1
KR101538638B1 KR1020150051715A KR20150051715A KR101538638B1 KR 101538638 B1 KR101538638 B1 KR 101538638B1 KR 1020150051715 A KR1020150051715 A KR 1020150051715A KR 20150051715 A KR20150051715 A KR 20150051715A KR 101538638 B1 KR101538638 B1 KR 101538638B1
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South Korea
Prior art keywords
gear
elliptical
elliptical gear
moving
power
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KR1020150051715A
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Korean (ko)
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강주엽
김차식
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강주엽
김차식
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Priority to KR1020150051715A priority Critical patent/KR101538638B1/en
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Publication of KR101538638B1 publication Critical patent/KR101538638B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/02—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of unchangeable ratio
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • B62M2700/003—

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)

Abstract

Disclosed is a power transmission device using a reciprocation gear, wherein a power transmission gear reciprocates and rotates through a rotating reciprocation unit which is made of an oval gear to be installed in the front and rear sides of the power transmission gear and the reciprocation distance and turning radius of a connecting rod joined to the power transmission gear vary, thereby improving the torque and output of an output shaft.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a reciprocating-

More particularly, the present invention relates to a reciprocating gear transmission for reciprocating a power transmission gear, which is disposed forward and rearward of a power transmission gear and is rotated through a rotary reciprocating means composed of an elliptical gear, To a reciprocating-gear power transmission device configured to be able to improve a torque and an output of an output shaft by being configured such that a longitudinal moving length and a turning radius of a connecting rod coupled to the power transmitting gear are changed.

A power transmission device is a medium that allows power to be transmitted through a medium between a rotating shaft and an idle shaft that has no power and has a power source. The power transmission device is not only a transmission power transmission device or a reduction power transmission device, but also means for transmitting power from a power source by means of gears, belts and various types of indirect contact are all power transmission devices .

Although there are various power transmission devices as described above, generally, when the power of the power source (electric motor, human power, engine) is strongly transmitted to the input unit due to an input unit and an output unit, the corresponding output unit also outputs strong force. However, Is weakly output, it is generally output weakly.

Therefore, the power transmission apparatus receives a certain force from the power source to the input unit, and outputs the output from the output unit to the driving unit.

In addition, the conventional power transmission device generally has a complicated structure in order to increase or decrease the rotational force. Due to the complicated structure, it is necessary to perform a precise working process. Depending on the type of the power transmission device, If the defects are large, there is a problem that the parts themselves must be replaced.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems described above, and it is an object of the present invention to provide a power transmission device, And to improve the torque and the output of the output shaft by configuring the connecting rod to be coupled to the power transmission gear so that the longitudinal length and the turning radius of the connecting rod are changed.

The above-described object is achieved by a motorcycle comprising: a pair of frames spaced apart from each other and arranged in the front-rear direction; a power shaft rotatably coupled between the front end portion of the frame and inputting power; A forward rotation reciprocating means constituted by a forward movement elliptical gear which is installed in parallel to the rear side of the front fixed elliptical gear and rotates in engagement with the front fixed elliptical gear and is reciprocated forward and backward on the frame by rotation of the forward fixed elliptical gear, A rear fixed elliptical gear which is fixedly coupled to a fixed rotary shaft rotatably coupled between the rear end of the frame and fixedly rotates and rotates in the same direction with a phase difference of 90 degrees with the front fixed elliptical gear, It is arranged in parallel to the front side of the elliptical gear, And a rearwardly rotating elliptical gear provided to be reciprocated forward and backward on the frame while rotating in engagement with the rear fixed elliptical gear, and a rearwardly rotating elliptical gear which is rotatably engaged with the forwardly moving elliptical gear and the rearwardly moving elliptical gear A power transmission gear installed to be reciprocated in the forward and backward directions on the frame in accordance with forward and backward reciprocating movement of the forward moving elliptical gear and the backward moving elliptical gear and a power transmitting gear provided outside the one frame and axially coupled with the power transmitting gear, And an output shaft which is installed on the rear side of the frame and which outputs power, an output shaft which is installed at a diameter larger than that of the transmission disk and which is axially coupled to the output shaft and which is rotatably supported by the output shaft An output disk for transmitting power, And the other end is eccentrically coupled to the output disk by the output crank pin to transmit the driving force generated by the rotational movement and the reciprocating motion of the transfer disk to the output disk, And a connecting rod for rotating the disk.

The reciprocating gear transmission system according to the present invention is constituted such that the power transmission gear is rotated while moving forward and backward through a rotary reciprocating means composed of elliptical gears installed forward and rearward of the power transmission gear, There is an effect that the torque and the output of the output shaft can be improved by configuring the longitudinal movement length and the turning radius of the rod to be changed

1 is a perspective view showing a configuration of a reciprocating gear transmission system according to the present invention,
2 is a plan view showing a configuration of a reciprocating gear transmission system according to the present invention,
3 and 4 are side views showing the configuration of a reciprocating gear transmission system according to the present invention,
5 is a diagram for explaining the forward rotation means and the backward rotation means in the present invention,
6 is a view for explaining engagement of gears in a reciprocating gear transmission system according to the present invention,
7 to 11 are views for explaining the operation of the reciprocating gear transmission system according to the present invention.

The present invention will now be described in detail with reference to the accompanying drawings.

1 to 4, a reciprocating gear transmission system according to the present invention includes a frame 10 constituting a basic frame, and the frames 10 are formed of a pair and are spaced apart from each other and installed in the longitudinal direction .

A power shaft 100 is rotatably coupled between the front end of the frame 10. Here, the power shaft 100 is a portion into which power is input. As shown in the figure, the pedal P is coupled to both ends of the power shaft 100, and the power shaft is rotated by the rotation of the pedal And it is needless to say that, in addition, a driving means such as an electric motor may be coupled to input power to the power shaft 100.

A front fixed elliptical gear 210 coupled to the power shaft 100 for rotation and a forward moving elliptical gear 220 disposed parallel to the rear of the front fixed elliptical gear 210 and configured to rotate together, A forward rotation reciprocating means 200 is provided.

The forward rotation reciprocating means 200 is installed such that the forward moving elliptical gear 220 reciprocates forward and backward on the frame 10 by the rotation of the forward fixed elliptical gear 210. 5, when the forward fixed elliptical gear 210 and the forward moving elliptical gear 220 are rotated such that their longitudinal axes are straight in the forward and backward directions, And when the short axes of the front fixed elliptical gear 210 and the front movable elliptical gear 220 are rotated so as to be straight in the forward and backward directions, the forward moving elliptical gear 220 is moved forward on the frame. Therefore, the forward rotation reciprocating means 200 reciprocates the forward moving elliptical gear 220 forward and backward over the frame 10 by the rotation of the forward fixed elliptical gear 210 in the forward and backward directions.

The front fixed elliptical gear 210 rotates in the same direction with a phase difference of 90 degrees with the forward fixed elliptical gear 210. The front fixed elliptical gear 210 rotates in the same direction with the fixed rotary shaft 110 rotatably coupled between the rear end of the frame 10, And a rearwardly moving elliptical gear 320 which is arranged in parallel to the front side of the rear fixed elliptical gear 310 and is configured to rotate to engage with the rear fixed elliptical gear 310.

Here, the rearwardly moving elliptical gear 320 is installed to be reciprocally moved forward and backward on the frame 10 while being rotated by engaging with the rear fixed elliptical gear 310. 5, when the longitudinal axes of the rear fixed elliptical gear 310 and the rearward moving elliptical gear 320 are rotated so as to be straight in the forward and backward directions, When the short axis of the rear fixed elliptical gear 310 and the short axis of the rearward moving elliptical gear 320 are rotated so as to be straight in the forward and backward directions with respect to each other, . Therefore, the rearward rotation oval gear 300 reciprocates in the forward and rearward directions D2 on the frame 10 while rotating the rearwardly moving elliptical gear 320 in engagement with the rear fixed elliptical gear 310. [

A power transmission gear 400 is provided between the forward rotation reciprocating means 200 and the rear rotation reciprocating means 300 so that the forward and backward reciprocating means 200 and the backward reciprocating means 300 are reciprocated And reciprocally move on the frame (10). That is, the power transmission gear 400 is reciprocated in the forward and backward directions along with the rotary motion on the frame 10 by the reciprocating movement of the forward rotation means 200 and the backward rotation means 300.

Specifically, the power transmission gear 400 is installed between the forward moving elliptical gear 220 and the rearward moving elliptical gear 320 so as to be engaged with each other and rotatable. The power transmission gear 400 is installed to be reciprocated in the forward and backward directions on the frame 10 in accordance with forward and backward movement of the forward moving elliptical gear 220 and the backward moving elliptical gear 320. That is, when the front fixed elliptical gear 210 and the forward moving elliptical gear 220 are rotated such that their longitudinal axes are straight in the forward and backward directions, the power transmission gear 400 is moved backward on the frame 10, The power transmission gear 400 is moved forward on the frame 10 when the longitudinal fixed axes of the rear fixed elliptical gear 310 and the rearward moving elliptical gear 320 are rotated so as to be straight in the forward and backward directions with respect to each other. Accordingly, the power transmission gear 400 is reciprocally moved between the forward moving elliptical gear 220 and the rearward moving elliptical gear 320, and reciprocally moved forward and backward for a predetermined period on the frame 10. One power transmission gear 401 is meshed with the forward moving elliptical gear 220 and the other power transmission gear 402 is meshed with the rear moving elliptical gear 320 It is preferable that they are configured to be matched.

Here, the forward moving elliptical gear 220, the rearward moving elliptical gear 320, and the power transmitting gear 400 are configured to roll along the rails on the frame 10. To this end, guide slits 11 are formed at the center of the pair of frames 10 in the forward and backward directions, and guide rails 12 are formed at the upper and lower surfaces of the frame 10 in the forward and backward directions. The shafts of the forward moving elliptical gear 220, the rearward moving elliptical gear 320 and the power transmission gear 400 are configured such that both ends thereof are inserted into the guide slits 11 and guided. Both ends of the axes of the forward moving elliptical gear 220, the rearward moving elliptical gear 320 and the power transmission gear 400 are rotatably mounted on a support plate 13 provided outside the frame 10. Bearing rollers R are provided at the upper and lower ends of the support plate 13 to move along the guide rails 12. With this configuration, the bearing roller R is supported by the guide rail 12 in a state where the forward moving elliptical gear 220, the rearward moving elliptical gear 320, and the power transmission gear 400 are installed on the support plate 13, And the guide 10 is moved forward and backward.

Here, the forward moving elliptical gear 220, the rearward moving elliptical gear 320, and the power transmission gear 400 are configured to roll along the guide rail 12 of the frame 10 through the bearing roller R, A variety of known moving means can be applied as long as the forward moving elliptical gear 220, the rearward moving elliptical gear 320 and the power transmitting gear 400 can move forward and backward in the frame 10, A linear bearing is applied so that the forward moving elliptical gear 220, the rearward moving elliptical gear 320 and the power transmission gear 400 can be moved in the forward and backward directions along the frame 10 Of course.

On the other hand, the forward rotation reciprocating means 200, the rear rotation reciprocating means 300 and the power transmission gear 400 are configured such that they are properly engaged with each other but not abraded. 6, a forward fixed elliptical disk 211 is integrally formed on both sides of the forward fixed elliptical gear 210, and the forward fixed elliptical gear 211 is integrally formed on both sides of the forward moving elliptical gear 220, A forward moving elliptical disk 221 which is rotated while being in contact with the disk 211 is integrally formed. That is, the forward fixed elliptical gear 210 and the forward moving elliptical gear 220 are not only meshed with each other but also are meshed with each other because the forward fixed elliptical disk 211 and the forward moving elliptical disk 221 are rotated together The wear of the gear is not generated.

In addition, power transmission discs 410 are integrally formed on both sides of the power transmission gear 400 so as to rotate against the forward moving elliptical discs 221. A rear fixed elliptical disc 311 is integrally formed on one side of the rear fixed elliptical gear 310. An annular guide protrusion 311a is formed on the outer surface of the rear fixed elliptical disc 311 along the center thereof. A rearwardly moving elliptical disk 321 is integrally formed at one side of the rearwardly moving elliptical gear 320 to rotate with the rearwardly fixed elliptical disk 311, An annular guide groove 321a is formed in which the guide protrusion 311a of the rear fixed elliptical disc is inserted and rotated by a guide. That is, the power transmission discs 410 formed on both sides of the power transmission gear 400 are brought into contact with the forward moving elliptical discs, so that the gears are hardly worn out while the gears are correctly engaged with each other. The rear fixed elliptical gear 310 and the rearward moving elliptical gear 320 rotate in a state in which the guide protrusion 311a of the rear fixed elliptical disk is inserted into the guide groove 321a of the rearward moving elliptical disk and is guided So that there is an advantage that wear of the gear is hardly generated even though the gears are correctly engaged with each other.

And a transmission plate 500 installed outside the one frame 10 and axially coupled to the power transmission gear 400 is installed. That is, the transfer plate 500 is axially coupled to the power transmission gear 400 and rotates together with the power transmission gear 400 so as to be reciprocated in the forward and backward directions of the frame 100 in correspondence with the power transmission gear 400 .

An output shaft 600 is installed on the rear side of the frame 10 to output power transmitted through the transfer plate 500.

The output shaft 700 is coupled to the output shaft 600 to receive the power transmitted from the transfer shaft 500 and to rotate the output shaft 600 by rotation. Here, the output disk 700 is preferably configured to have a larger diameter than the transfer disk 500 so as to improve the torque and the output of the output shaft 600. In addition, the output shaft 600 may be directly coupled to the output shaft 600, and the output gear 600 may be axially coupled to the output shaft 600, And may be configured to be connected via a chain to output.

The transfer plate 500 and the output plate 700 are configured to transmit the output of the transfer plate 500 to the output plate 700 through a connecting rod 800 eccentrically coupled to the transfer plate 500. More specifically, one end of the connecting rod 800 is eccentrically coupled to the transmitting plate 500 by a transmitting crank pin 810, and the other end of the connecting rod 800 is connected to the output crank pin 820 And is eccentrically coupled to the output disk 700. The connecting rod 800 rotates and reciprocates by the rotational movement of the transfer plate 500 and the reciprocating motion of the transfer plate 500 to transmit the driving force to the output plate 700 to rotate the output plate.

In the meantime, when the power is input to the power shaft 100, the power of the power shaft 100 is directly transmitted to the output shaft 600 when the power is first input so that the starting rotation of the output shaft 600 is smoothly performed. . That is, the output disk 700 rotates forward without rotating. To this end, a first start gear 910 is axially coupled to the power shaft 100, and a second start gear 920 and a third start gear 920, which correspond to the first start gear 910, And a fourth start gear 940 corresponding to the third start gear 930 is axially coupled to the output shaft 600. The first start gear 910 and the second start gear 920 are connected to each other through a first start chain 950. The third start gear 930 and the fourth start gear 940 are connected via a first start chain 950, Chain 960. As shown in Fig. That is, when the power is input through the power shaft 100, the input power is transmitted from the first start gear 910 coupled to the power shaft 100 through the first start chain 950 to the second start gear 920 and is transmitted from the third start gear 930 to the fourth start gear 940 through the second start chain 960 to rotate the output shaft 600 directly. Therefore, the output shaft 600 can be easily rotated by transmitting power directly to the output shaft through the start gear and the start belt. After the start-up rotation of the output shaft 600 is smooth, 700 are configured to continuously transmit the increased torque and output to the output shaft.

Further, the distance between the transmission plate 500 and the output plate 700 is 1: 2, and the forward and backward distance of the power transmission gear 400 corresponds to half of the diameter of the output plate 700 . That is, by compensating the difference in the diameter of the output disk 700 by the reciprocating distance of the power transmission gear 400, it is possible to rotate the output disk 700 having a larger diameter through the small diameter transmission disk 500 . Therefore, since the present invention has an effect of substantially lengthening the length of the connecting rod, the torque generated even by the same force is large. Therefore, it is advantageous in that the power to travel the bicycle is small, which is advantageous in terms of speed as well as being convenient when traveling uphill.

Hereinafter, the operation and effect / effect of the reciprocating gear transmission system according to the present invention will be described.

8, when the forward fixed elliptical gear 210 is rotated by inputting power to the power shaft in the state of FIG. 7, the front fixed elliptical gear 210 rotates the frame 10, The forward moving elliptical gear 220 moves backward. The power transmission gear 400 engaged with the forwardly moving elliptical gear 220 is moved to the rear side on the frame 10 in conjunction with the backward movement of the forwardly moving elliptical gear 220.

9, the coupling rod 800 coupled to the transfer plate transfers the rotational motion and the backward movement of the transfer plate 500 to the output plate 700, . At this time, when the front fixed elliptical gear 210 and the forward moving elliptical gear 220 are rotated so that their longitudinal axes are straight in the forward and backward directions, the power transmission gear 400 is moved backward on the frame 10 , The rearward moving elliptical gear 320 is rotated so that the short axes of the rear fixed elliptical gear 310 and the rearward moving elliptical gear 320 are straight in the forward and backward directions, In addition, the forward movement elliptical gear 220 and the backward movement elliptical gear 320 are configured to be capable of rotating in one direction with a reverse rotation prevention device 900 attached thereto.

10, when the power is continuously inputted to the power shaft 100, the front fixed elliptical gear 210 and the forward moving elliptical gear 220 are rotated such that their short axes are straight in the forward and backward directions, The power transmission gear 400 is moved forward on the frame 10 while the longitudinal fixed axes of the rear fixed elliptical gear 310 and the rearward moving elliptical gear 320 are rotated so as to be straight in the forward and backward directions with respect to each other.

11, the coupling rod 800 coupled to the transfer plate 500 transfers the rotational motion and the forward movement of the transfer plate 500 to the output plate 700, (700) continuously. As described above, the present invention is configured to continuously output the power input to the power shaft to the output shaft by repeating the processes of FIGS.

The reciprocating-gear power transmitting apparatus according to the present invention constructed as described above is configured to be rotated forward and backward while moving the power transmitting gear on the frame through front and rear rotating means provided on the front and rear of the power transmitting gear and composed of elliptical gears. Then, by the operation in which the power transmitting gear rotates while moving in the forward and backward directions, the transmission plate rotates the output plate through the connecting rod. At this time, the longitudinal length and the radius of rotation of the connecting rod coupled to the transmission plate for transmitting the power of the power transmission gear are increased.

Therefore, since the present invention has an effect of substantially increasing the length of the connecting rod, it is possible to rotate the output disc having a larger diameter through a small-sized transfer plate. Accordingly, the present invention has an advantage that the torque generated even when the same force is applied is increased, and the force required to travel is reduced.

7 to 11, since the output shaft is configured to rotate once when the power shaft rotates by half, the present invention is advantageous in terms of speed as well as high output.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who can afford it will know.

10: Frame 100: Power shaft
200: forward rotation reciprocating means 210: forward fixed elliptical gear
220: forward moving elliptical gear 300: forward rotating reciprocating means
310: rear fixed elliptical gear 320: rearward moving elliptical gear
400: Power transmission gear 500: Transmission disk
600: Output shaft 700: Output disk
800: Connecting rod 900: Reverse rotation preventing device

Claims (5)

A pair of frames spaced apart from each other and provided in the front and rear direction,
A power shaft rotatably coupled between the front end of the frame and receiving power,
A front fixed elliptical gear fixedly coupled to the power shaft, and a front fixed elliptical gear fixed to the power shaft, and a front fixed elliptical gear disposed in parallel to the rear of the front fixed elliptical gear and rotated to be reciprocated forward and backward on the frame by rotation of the front fixed elliptical gear Forward rotation reciprocating means composed of forward moving elliptical gears installed,
A rear fixed elliptical gear having a phase difference of 90 degrees and rotating in the same direction with the front fixed elliptical gear and a rear fixed elliptical gear rotatable in the same direction and fixedly coupled to a fixed rotary shaft rotatably coupled between rear ends of the frame, And a rearwardly rotating elliptical gear configured to be rotatably engaged with the front side of the frame, the rearwardly moving elliptical gear being installed to be reciprocated forward and backward on the frame while rotating in engagement with the rear fixed elliptical gear,
A power transmission gear installed to rotate reciprocally between the forwardly moving elliptical gear and the rearwardly moving elliptical gear and to be reciprocated forward and backward on the frame in accordance with forward and backward movement of the forwardly moving elliptical gear and the forwardly moving elliptical gear, ,
A transmission plate installed outside the one frame and axially coupled to the power transmission gear and reciprocating in the forward and backward directions while rotating together with the power transmission gear;
An output shaft installed at a rear side of the frame and outputting power,
An output plate installed at a larger diameter than the transfer plate and axially coupled to the output shaft and transmitting power to the output shaft by rotation,
And the other end is eccentrically coupled to the output disk by an output crank pin so that the driving force generated by the rotational movement and the reciprocating motion of the transfer disk is transmitted to the output disk And a connecting rod which rotates the output disk by transmitting the power to the reciprocating gear.
The method according to claim 1,
Guide slits are formed at the center of the pair of frames in the forward and backward directions, guide rails are formed at the upper and lower surfaces of the frame in the forward and backward directions,
Wherein the shafts of the forward moving elliptical gear, the rearward moving elliptical gear, and the power transmission gear are guided such that both ends thereof are inserted into the guide slits, respectively,
Both ends of the shaft of the forward moving elliptical gear, the rearward moving elliptical gear and the power transmitting gear are rotatably installed on a support plate provided on the outer side of the frame,
Wherein a bearing roller which is moved along the guide rails is provided at an upper end and a lower end of the support plate so as to guide the forwardly moving elliptical gear, the rearward moving elliptical gear and the power transmission gear forward and backward. .
The method according to claim 1,
A front fixed elliptical disk is integrally formed on both sides of the front fixed elliptical gear,
A forward moving elliptical disk is integrally formed on both sides of the forward moving elliptical gear,
And a power transmitting disk rotatably engaged with the forward moving elliptical disk is integrally formed on both sides of the power transmitting gear,
A rear fixed elliptical disc is integrally formed on one side of the rear fixed elliptical gear, an annular guide protrusion is formed on the outer surface of the rear fixed elliptical disc along the center,
The rearwardly moving elliptical disk is integrally formed with a rearwardly moving elliptical disk which is rotated by being in contact with the rearwardly fixed elliptical disk. A guide projection of the rearwardly fixed elliptical disk is inserted into the outer surface of the rearwardly moving elliptical disk, Wherein a circular guide groove to be rotated is formed.
delete The method according to claim 1,
The transmission plate and the output plate have a diameter ratio of 1: 2,
Wherein the forward and backward reciprocating distance of the power transmission gear corresponds to half of the diameter of the output disk.
KR1020150051715A 2015-04-13 2015-04-13 Power transmission device according to the reciprocating gear KR101538638B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101587614B1 (en) * 2015-10-02 2016-01-21 강주엽 Power transmission device in accordance with the round trip ellipse gear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09142361A (en) * 1995-11-25 1997-06-03 Minoru Nakagawa Rotor pair type leg stepping force power unit
US20050014585A1 (en) * 2000-10-27 2005-01-20 Vaskas Georges Nicolas Combined out-in stroke mechanical transmission for facilitating and multiplying the speed of cycles and other pedal appliances
KR200430207Y1 (en) * 2006-08-01 2006-11-13 윤창식 A bicycle
CN102582770A (en) * 2011-01-18 2012-07-18 宫佳琳 Transmission capable of changing moment of bicycle crank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09142361A (en) * 1995-11-25 1997-06-03 Minoru Nakagawa Rotor pair type leg stepping force power unit
US20050014585A1 (en) * 2000-10-27 2005-01-20 Vaskas Georges Nicolas Combined out-in stroke mechanical transmission for facilitating and multiplying the speed of cycles and other pedal appliances
KR200430207Y1 (en) * 2006-08-01 2006-11-13 윤창식 A bicycle
CN102582770A (en) * 2011-01-18 2012-07-18 宫佳琳 Transmission capable of changing moment of bicycle crank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101587614B1 (en) * 2015-10-02 2016-01-21 강주엽 Power transmission device in accordance with the round trip ellipse gear

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