KR20110022348A

KR20110022348A - Bicycle

Info

Publication number: KR20110022348A
Application number: KR1020090079888A
Authority: KR
Inventors: 유동현
Original assignee: 유동현
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2011-03-07

Abstract

PURPOSE: A bicycle is provided to drive a rear wheel by the horizontal pivotal movement of a handle and the clockwise rotation of a pedal. CONSTITUTION: A bicycle comprises a pedal(10), a handle, a firs transfer unit, a second transfer unit(370), a support casing(390) and a unidirectional clutch(70). The handle comprises a front-wheel handle frame and an upper handle frame. The front-wheel handle frame is fixed to a front wheel. The upper handle frame is arranged on the upper part of the front-wheel handle frame. The first transfer unit is pivotably coupled to the upper and front-wheel handle frames. The second transfer unit transfers the horizontal pivotal force of the upper handle frame through the unidirectional clutch to a driving sprocket as a driving source for forward movement. The support casing supports the first and second transfer units. The unidirectional clutch transfers the torque of the rotary shaft of the pedal to the driving sprocket.

Description

Bike {bicycle}

The present invention relates to a bicycle that transmits forward driving force to the pedal side drive sprocket by turning in the front and rear direction of the handle while maintaining the steering rotation function of the steering wheel and the one-way forward driving function of the pedal as it is.

Conventional bicycles provide a forward driving force by the clockwise rotation of the pedal through a chain connecting the drive sprocket coupled to the rotary shaft of the pedal and the driven sprocket of the rear wheel, the counterclockwise rotation of the pedal is connected to the driven sprocket by a one-way clutch It is idling by the rear wheel rotation axis.

Such a conventional bicycle has a structure that transmits forward driving force to the front wheel (front wheel) or the rear wheel (rear wheel) by turning the steering wheel forward and backward in addition to receiving the driving force only by the clockwise rotation of the bicycle pedal. 825125] and Patent Document 2 (Korean Registered Application No. 20-337092).

The bicycle of Patent Literature 1, in a general bicycle structure, forms a planetary gear portion on which a needle bearing for transmitting kinetic force in one direction is centered on one side or both sides of a front wheel shaft, and a disc plate having a stopper on one side of the planetary gear portion. And a handle frame fixedly connected to the outer circumferential surface of the planetary gear and covering the front wheels in a “∩” shape, and a handle connected to an upper side from the center of the handle frame. The pedal can be used to gain forward driving force, and the arm can be used to rotate the steering wheel forward and backward to drive the front wheels, allowing for forward and backward rotations that can be expected to achieve an even upper and lower body movement. Relates to a bicycle having a handlebar.

However, the planetary gear portion is formed on the front wheel side, and the front wheel can be driven only when it is either front or rear, and the front wheel driving force is remarkably weak compared to the amount of front and rear rotation.

Patent document 2 is a kick board that is driven by the operation of the handle, the rear wheel is not idling when you hold the handlebar and push it forward or pull back, it is possible to obtain the driving force by continuous rotation, so that the doubling of the running speed as well as the youth's movement It is very practical because it can contribute greatly to the promotion of culture.

However, the device for obtaining propulsion force between the handles is very complicated and its volume is so large that it is not practical, and since there is no pedal configuration, it cannot function as a bicycle.

The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a bicycle capable of transmitting all of the front and rear turning force of the steering wheel to the driving force of the rear wheel while maintaining the rotational force of the pedal as it is.

In order to solve the above object, the bicycle of claim 1 of the present invention,

In a bicycle that is steered by the steering wheel and rotates the rear wheel forward through the drive sprocket as the pedal rotates clockwise,

The handle is formed of a front wheel handle frame fixed to the front wheel, a handle frame disposed above the front wheel handle frame, the first transmission mechanism is coupled to the handle frame and the front wheel handle frame to be steerable and forward and rearward turning; And a second transmission mechanism for transmitting the forward rotational force to the drive sprocket through the handle-side one-way clutch, a support casing for supporting the first transmission mechanism and the second transmission mechanism, and the pedal. And a pedal-side one-way clutch for transmitting the rotational driving force of the rotary shaft to the drive sprocket.

According to this structure, all the forward and backward turning force of a steering wheel can be transmitted to the driving force of a rear wheel, maintaining the rotational force of a pedal as it is.

Bicycle according to claim 2 of the present invention,

The first transmission mechanism includes an outer gear formed on the handle frame and an inner gear formed on the front wheel handle frame and engaged with the outer gear, wherein the center of rotation of the outer gear is eccentric with respect to the center axis of the inner gear. The handle frame is supported by the support casing so as to be able to steer and pivot back and forth.

According to this structure, the steering of the handle and the front and rear swing structures can be formed at the same time to make the parts compact.

Bicycle according to claim 3 of the present invention,

The second transmission mechanism includes a rack bar for converting the turning force in the front and rear direction of the handle frame into a reciprocating linear motion, and a forward drive transmission member for transmitting power for rotating the reciprocating linear motion of the rack bar in the forward driving direction of the drive sprocket. Include.

According to this structure, continuous forward driving force is simply transmitted by turning back and forth of the handle frame.

As is apparent from the above description, the present embodiment has the following effects.

By driving the rear wheel by turning the steering wheel forward and backward and clockwise rotation of the pedal, the steering wheel one-way clutch and the pedal-side one-way clutch are provided so that they do not interfere with each other during driving to improve driving stability.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a side view showing a bicycle according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional view showing a second transmission mechanism of Figure 1, Figures 3 and 4 show the first transmission mechanism of FIG. 1 is a perspective view of the separation and coupling, and FIG. 5 is a plan view showing the main part of the first transmission mechanism.

As shown in FIG. 1, the bicycle of the present embodiment rotates the rear wheel (rear wheel) forward through the drive sprocket 20 as the pedal 10 rotates clockwise and is steered by the handle 30. The forward and backward turning of 30 provides forward power to the drive sprocket 20.

That is, the forward rotation power transmission mechanism of the pedal rotation and the front and rear turning of the steering wheel steering wheel 30 divided into the front wheel handle frame 330 and the handle frame 310, the steering wheel frame 310 and the front wheel handle frame 330 And a first transmission mechanism 350 that is pivotally coupled to the front and rear directions, and a second forward force that transmits forward and backward rotational force of the handle frame 310 to the drive sprocket 20 through the handle side one-way clutch 50. A transmission casing 370, a support casing 390 for supporting the first transmission mechanism 350 and the second transmission mechanism 370, and a pedal for transmitting the rotational driving force of the pedal rotation shaft 11 to the drive sprocket 20. The side one-way clutch 70 is comprised.

As shown in FIG. 3, the handle 30 includes a front wheel handle frame 330 fixed to the front wheel (front wheel) 1 and a handle frame 310 disposed above the front wheel handle frame 330. It is divided into

The first transmission mechanism 350 is coupled to the front wheel handle frame 330 and the handle frame 310 so as to be able to steer and rotate in forward and backward directions.

That is, as shown in FIGS. 3 to 5, the first transmission mechanism 350 is formed on the outer gear 351 formed on the handle frame 310 and the outer gear 351 formed inside the front wheel handle frame 330. It is composed of an inner gear (353) engaging the), the steering rotational force of the handle frame 310 is transmitted to the front wheel handle frame (330).

On the other hand, as shown in FIG. 5, the center of rotation O2 of the outer gear 351 is in a position eccentric with respect to the center of rotation O1 of the inner gear 351.

In this eccentric position, the pivot support shaft 361 is pivotally supported by the hinge casing 341 of the support casing 390 described later and the vertical support tube 340 supporting the horizontal frame.

The vertical support pipe 340 is supported by the front wheel handle frame 330 is inserted into the upper outer circumference so as to be able to steer, or through a general bearing between the vertical support pipe 340 and the upper outer circumference of the front wheel handle frame 330. good.

The pivot support shaft 361 is installed in the outer cylinder 363, and a general bearing 365 is interposed between the outer cylinder 363 and the handle frame 310, and the pivot support shaft ( 361) does not rotate relatively.

Due to this eccentric position, the handle frame 310 is able to pivot (ie, push forward or pull back) in the front-rear direction with respect to the front wheel handle frame 330.

In addition, when steering in a state of turning back and forth (that is, inclined state), in order to increase the engagement efficiency between the inner gear 353 and the outer gear 351, it is preferable to have an arc shape or convex outward. This arc shape or convex shape also serves to ensure the maximum turning angle of the outer gear 351 when turning back and forth.

The pivot support shaft 361 is inserted from the outside of the vertical support pipe 340 inward to be fastened to the outer cylinder 363 and supported by the hinge hole 341. Of course, the pivot support shaft 361 may be implemented to be long enough to protrude out of the bolt shape or the hinge hole 341 so as not to fall out of the hinge hole (341).

On the other hand, the second transfer mechanism 370 is the forward movement of the drive sprocket 20, the rack bar 371 for converting the turning force in the front and rear direction of the handle frame 310 to the reciprocating linear motion, and the reciprocating linear motion of the rack bar 371 It consists of a forward drive transmission member 400 for converting in the direction.

The second transfer mechanism 370 is operably supported by the upper and lower penetrated support casing 390 whose upper end side is fixed to the outer periphery of the vertical support tube 340.

As shown in FIG. 3, the rack bar 371 is inserted into the support casing 390 through the through hole 343 of the vertical support pipe 340, and then inserted into the insertion protrusion 364 of the outer cylinder 363. Is supported by. The rack bar 371 is supported by the insertion protrusion 364 by the pin 362, and also serves to prevent the hinge shaft 361 of the handle frame 310 from being detached even if it is pulled out.

In addition, the rack bar 371 is preferably guided by the guide piece 391 of the support casing (390).

The support casing 390 having such a function may be divided into left and right, and then assembled or integrally implemented. The rack bar 371 may be inserted below the support casing 390 to be installed.

In addition, the gear box 375 is preferably interposed between the rack bar 371 and the forward drive transmission member 400.

The gearbox 375 of the present embodiment includes a first gear 375a, a second gear 375b, and a second support shaft 375 'installed on a first support shaft 375' engaged with a rack of the rack bar 371. It is preferable that the third gear 375c and the fourth gear 375d connected to the forward drive transmission member 400 are installed on the second gear 375b.

In the forward drive transmission member 400, a pedal rotation shaft 11 is disposed at a center thereof, and a gear driving meshing with the fourth gear 375d is disposed at left and right sides of a cylindrical drive housing 410 and a drive housing 410 formed on an outer circumferential surface thereof. Intermediate interposed between the left and right one-way clutches 420L and 420R, the left and right bevel gears 440L and 440R that receive the rotational force of the left and right one-way clutches 420L and 420R, and the left and right bevel gears 440L and 440R. Between the bevel gear 460, the transmission shaft 480 for transmitting the rotational force of any one of the left and right one-way clutch (420L, 420R) to the drive sprocket 20, between the drive sprocket 20 and the transmission shaft 480 It consists of the handle side unidirectional bearing 70 interposed.

The driving housing 410 may be divided into two left and right parts, then assembled, or integrally assembled or assembled. Both ends of the drive housing 410 are rotatably supported by the support casing 390 by the general bearing 411.

The left and right one-way clutches 420L and 420R are constituted by poles 421L and 421R provided inside the drive housing 410 and outer ratchet wheels 423L and 423R fixed to the transmission shaft 480.

That is, the left one-way clutch 420L and the right one-way clutch 420R are arranged in different directions to transmit the rotational force, for example, when the drive housing 410 is clockwise, the right side is driven (when the pole is biting the outer ratchet wheel). The left side is idling (when the pole does not bite the outer ratchet wheel), and the driving housing 410 is disposed in the relation that the idling left side is driving when the counterclockwise direction.

The transmission shaft 480 is rotatably supported on both end shafts of the drive housing 410 by the general bearing 481.

Of course, the left and right bevel gears 440L and 440R and the left and right outer ratchet wheels 423 are fixedly coupled to the outer circumference of the transmission shaft 480.

The intermediate bevel gear 460 is rotatably supported on the drum 24a of the hollow shaft 24 through the general bearing 25.

In addition, the hollow shaft 24 is preferably fixed to the support casing 390 freely rotatable to the pedal rotation shaft 11 by a general bearing 461.

On the other hand, the inner ring of the one-way needle bearing 50 is mounted on the right outer circumferential edge of the pedal rotation shaft 11 in more detail.

The outer ring of the one-way needle bearing 50 is mounted on the outer surface of the drive sprocket 20 using the cap 55.

Therefore, the outer ring of the needle bearing 50 is separated from the transmission shaft 480, so that the rotation of the pedal 10 and the rotation of the transmission shaft 480 are performed separately to prevent the phenomenon of mutual interference.

The operation of the second delivery mechanism 370 configured as described above will be described.

First, when the handle frame 310 is pulled toward the driver's side (rear), the rack bars 371 move downwards, and the first gear trains 375a and 375b of the gearbox 375 rotate in the counterclockwise direction. 375c) 375d rotates clockwise.

As the fourth gear 375d rotates the drive housing 410 in the counterclockwise direction, the pole 421L of the left one-way clutch 420L, which is driven, rotates while biting the outer ratchet wheel 423L, but the right one-way clutch 420R. The pole 421R returns to the state without biting the outer ratchet wheel 423R.

Therefore, the counterclockwise left outer ratchet wheel 423L is the counterclockwise left bevel gear 440L-> intermediate direction bevel gear 460 for rotary telephony-> clockwise right bevel gear 440R-> clockwise right. It is transmitted to the outer ratchet wheel 423R-> clockwise transmission shaft 480-> clockwise handle side one-way bearing 70. The inner ring of the handle-side one-way bearing 70 rotates the drive sprocket 20 in the forward direction while rotating clockwise like the outer ring.

At this time, since the right one-way clutch 420R and the pedal-side one-way bearing 50 rotate idling, the right outer ratchet wheel 423R rotates clockwise without being caught by the right pawl 421R, thus interfering with the drive housing 410. In addition, since the outer ring of the pedal-side one-way bearing 50 also idles against the inner ring, it does not interfere with the turning of the handle frame 310.

On the contrary, when the handle frame 310 is pushed away from the driver side (forward), the rack bars 371 move upwards, and the first gear trains 375a and 375b of the gearbox 375 rotate clockwise to the second gear train. Reference numeral 375c and 375d rotate counterclockwise.

As the fourth gear 375d rotates the drive housing 410 in the clockwise direction, the pole 421R of the right one-way clutch 420R, which is driven, rotates while biting the outer ratchet wheel 423R, but the left one-way clutch 420L. The outer ratchet wheel 423L is returned to the state which is not bitten by the pole 421L.

Accordingly, the right outer ratchet wheel 423R held by the clockwise right pole 421R rotates the drive sprocket 20 directly through the transmission shaft 480 and the handle side one-way bearing 70.

In addition, the clockwise right outer ratchet wheel 423R has a clockwise right bevel gear 440R-> intermediate direction bevel gear 460 for rotational telephony-> counterclockwise left bevel gear 440L-> counterclockwise left. It is transmitted to the outer ratchet wheel (423L).

At this time, since the left one-way clutch 420L and the pedal-side one-way bearing 50 are idling, the left outer ratchet wheel 423L rotates counterclockwise without being caught by the left pawl 421L and the pedal-side one-way bearing 50 The outer ring of) will also idle against the inner ring.

On the other hand, when the pedal 10 is rotated in the clockwise direction, since the inner ring of the pedal-side one-way bearing 70 rotates together with the outer ring, the drive sprocket 20 is driven and rotated through the cap 55, but the handle-side one direction is rotated. The bearing 70 is idle and does not affect the second transmission mechanism 370.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications or variations of the present invention without departing from the spirit and scope of the invention described in the claims below For example, it will be apparent to those skilled in the art that the left and right sides may be implemented as one-way bearings instead of the one-way clutch that is the pawl and the inner tooth wheel.

The present invention can be applied to places, such as bicycles, wheelchairs, rides and the like using the rotational power in a predetermined direction in the vertical movement.

1 is a side view showing a bicycle according to a preferred embodiment of the present invention.

2 is a plan sectional view showing the second delivery mechanism of FIG.

3 and 4 are a perspective view of the separation and coupling showing the first transmission mechanism of FIG.

5 is a plan view showing the main part of the first delivery mechanism;

1: Front wheel (front wheel) 10: Pedal

11: pedal rotation shaft 20: drive sprocket

30: handle 50: one-way needle bearing

55: cap 70: pedal side one-way clutch

310: handle frame 330: front wheel handle frame

340: vertical support pipe 341: hinge hole

350: first transmission mechanism 351: outer gear

353: inner gear 361: pivot support shaft

362: pin 363: outer cylinder

364: insertion protrusion 365: general bearing

370: second delivery mechanism 371: rack bar

375: gearbox 390: support casing

391 Guide 400: Forward Drive Transmission Member

410: drive housing 420L, 420R: one-way clutch

421L, 421R: Pole 423L, 423R: Outside ratchet wheel

440L, 440R: Bevel Gears 460: Intermediate Bevel Gears

480: transmission shaft

Claims

The handle is composed of a front wheel handle frame fixed to the front wheel, a handle frame disposed above the front wheel handle frame,

A first transmission mechanism coupled to the handle frame and the front wheel handle frame so as to be steerable and pivotable forward and backward;

A second transmission mechanism for transferring the forward and backward turning force of the handle frame to the driving sprocket through the handle side one-way clutch;

A support casing for supporting the first transfer mechanism and the second transfer mechanism;

And a pedal side one-way clutch for transmitting the rotational driving force of the pedal rotation shaft to the drive sprocket.

The method of claim 1,

The first transmission mechanism is composed of an outer gear formed on the handle frame, and an inner gear formed on the front wheel handle frame and engaged with the outer gear.

The center of rotation axis of the outer gear is in an eccentric position with respect to the center axis of the inner gear,

The handle frame is a bicycle which is supported by the support casing so as to be able to steer and pivot in the front and rear directions.

The method according to claim 1 or 2,

The second delivery mechanism

Rack bar for converting the turning force of the front and rear direction of the handle frame to reciprocating linear motion,

And a forward drive transmission member for transmitting power for rotating the reciprocating linear motion of the rack bar in the forward drive direction of the drive sprocket.