KR20130128295A

KR20130128295A - Green bicycle

Info

Publication number: KR20130128295A
Application number: KR1020120054542A
Authority: KR
Inventors: 황우원
Original assignee: 황우원
Priority date: 2012-05-16
Filing date: 2012-05-16
Publication date: 2013-11-26

Abstract

The present invention relates to a bicycle. The bicycle according to the present invention comprises: a front wheel steering unit which comprises a front wheel, a fork, and a handle connected to the top end of the fork; a connecting frame which is coupled to the fork and is extended backwards; a main frame in which the front end is coupled to the connecting frame and the rear end is branched into two portions to be coupled to a rear wheel spindle; and a saddle part which is coupled to the top of the main frame; a rear wheel which is coupled to the rear wheel spindle to be rotated; a pair of driven gears, a pair of drive members which are in gear with the gear teeth of the driven gears; a pair of rack teeth; a pinion which is in gear with the rack teeth to be installed between the rack teeth; and a rear wheel rotating tool which is coupled to the driven gears and the rear wheel and transfers the driving force from the driven gears to the rear wheel only when the rack teeth rise.

Description

Green Bicycle {Green Bicycle}

The present invention relates to a bicycle, and more particularly to a bicycle having excellent driving efficiency, good aesthetics, and excellent durability and economic efficiency by enabling the driving through the process of pressing the footrest and the process of releasing the pressurization.

In general, the bicycle is configured to be driven by the operation of rotating a pair of pedals while the user is seated in the saddle, the pair of pedals are connected to the driving force transmission by the rear wheel and the chain, the respective pedals When the rotation of the bicycle is made while the rear wheel rotates through the chain.

In addition, a steering knob for steering the front wheel left and right is installed at the upper part of the front wheel, which is the front of the main body frame, thereby allowing free steering according to the needs of the user.

However, in the conventional general bicycle described above, the effective section in which the driving force is generated by the pedal rotation is from 1 o'clock to 5 o'clock in the clockwise direction, and the rest is idle, and the faster the rotation, the smaller the effective section is and the idling section becomes larger. When the long distance travel speed and propulsion is falling and uphill, due to this idle idling timing of the user's rolling force is not correct, the power consumption is doubled and the efficiency is reduced, there is a problem that increases fatigue and stress due to driving.

In addition, in the case of the conventional general bicycle, there are many members gathered on the driving wheel, the chain and the driving wheel in the important space where the driving force must be secured through the rolling force along the bicycle driving, and thus the structure is complicated, it is also disadvantageous for safety, There was also a problem that it is a spatial obstacle to secure, and due to these various parts and complex structure, there was a problem that the failure rate is high, the appearance of the bicycle hurts, the weight of the bicycle increases and the manufacturing cost increases.

Republic of Korea Patent No. 10-0975760 Japanese Patent Laid-Open No. 2010-501399 Republic of Korea Patent Publication No. 10-2011-0048741 Republic of Korea Patent Publication No. 10-2006-0012706 Republic of Korea Patent Publication No. 10-2010-00039069 Republic of Korea Patent No. 10-1017769

The present invention has been made to solve the problems of the prior art, the present invention is to improve the overall structure of the bicycle, the weight is less and the structure is simple, there is less fear of failure, less manufacturing cost and by changing the drive method The purpose is to provide a bicycle with excellent driving efficiency by minimizing idle section.

The bicycle according to the present invention for achieving the above object is a front wheel steering unit comprising a front wheel, a fork to which the front wheel is freely rotatable and a handle connected to the top of the fork, and coupled to the fork to the rear An extended connecting frame, the front end is coupled to the connecting frame, the rear end is divided into two branches, respectively coupled to the rear wheel shaft and supported, has a convex arc shape toward the upper side and the arc shape in each of the left inner and the right inner side extending long forward and backward A rear wheel rotatably coupled to the rear wheel shaft so as to be located between the mainframe, the saddle portion coupled to the upper portion of the mainframe, the two split portions of the rear portion of the mainframe, and the rear wheel formed with a member passageway; Located on the right side of the rear wheel and on the left side of the shaft A pair of driven gear parts rotatably coupled to each of the supporting parts and an arc shape to move back and forth along the drive member path, and a left and right pair are slidable inside each of the left and right pair of drive member passages. Each front end is provided with a pedal positioned outside the drive member passageway, and each rear end is positioned outside the drive member passageway, and teeth are engaged with gears of each of the pair of driven gear portions. A pair of left and right drive members, a pair of racks formed long in the front and rear direction on each of the surfaces facing each other of the middle portion of the pair of drive members, and the pair of racks are engaged with all of the pair of racks. It is inserted between the rotatably installed around the vertical axis of rotation installed in the main frame It is configured to include a rear wheel one-way rotary transmission mechanism coupled to the pinion and the driven gear and the rear wheel is provided between the driven gear and the rear wheel so that the driving force of the driven gear is transmitted to the rear wheel only when the rack teeth are raised. .

In addition, it is preferable that a bearing is installed between the driving member and the driving member passage so that the driving member is supported to be movable in the front and rear direction by the bearing.

In addition, the left guide frame provided in the left side of the handle and extending in the front-rear direction and empty inside, the right guide frame provided in the right side of the handle and extending in the front-rear direction and empty inside, coupled to the left side of the front wheel shaft A left front wheel gear, a right front wheel gear coupled to the right side of the front wheel shaft, and a left handle at the upper end and a left rack gear at the lower end thereof engaged with the teeth of the left front wheel gear. A left power transmission member hinged to the fork and a portion below the left handle penetrates the left guide frame, and a right handle is provided at the upper end and a right rack gear engaged with the right front wheel gear at the lower end thereof. The upper portion of the rack gear is hinged to the fork and the portion under the right handle is It is provided between the right power transmission member penetrating the right guide frame, the left front wheel gear and the front wheel, and is provided between the left front wheel gear and the front wheel so that the driving force of the left front wheel gear is only when the teeth of the left rack gear move forward. The driving force of the right front wheel gear is provided between the right front wheel gear and the front wheel in combination with the left front wheel one-way rotary electric machine and the right front wheel gear and the front wheel to be transmitted to the front wheel, so that the teeth of the right rack gear move forward. It further comprises a right front wheel one-way rotary transmission mechanism to be transmitted to the front wheel, the left frame and the right frame within the range limited by the left frame and the right frame to hold the left handle and the right handle Reciprocating forward and backward along the left side The left front wheel gear meshed with the left rack gear and the right front wheel gear meshed with the right rack gear rotate by the hinged movement of the power transmission member and the right power transmission member, wherein the left front wheel gear and the right front wheel gear are rotated on the left side. It is preferable that the front wheel shaft is configured to receive the rotational force of the left front wheel gear and the right front wheel gear only in the direction in which the bicycle is advanced by the front wheel one-way rotary electric drive and the right front wheel one-way rotary electric drive.

As described above, according to the bicycle according to the present invention, unlike the conventional bicycle, there is no part fixedly installed around the position where the pedal is located so that the pedal can be widened or narrowed to the left or right according to the user's body shape and the front and rear movement is It has the advantage that it is possible and can obtain more improved driving force.

In addition, by removing the various parts that are collected by the drive wheel, chain and drive wheel attached to the conventional bicycle can prevent safety accidents caused by the user's clothes caught in the chain, the structure is simple, light weight and low cost It is possible to manufacture, improve aesthetics and increase driving force.

In addition, since the pedal moves in the vertical direction, the user can exercise according to the user's body structure, and the idle part is minimized, so that the user can exert the maximum force even on a steep hill, so that the user can easily climb at high speed and reduce fatigue and stress. There is this.

1 is a side view showing a bicycle according to an embodiment of the present invention.
Figure 2 is a side view showing a driving member of the bicycle according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the main frame and the drive member and the bearing of the bicycle according to an embodiment of the present invention.
Figure 4 is a front sectional view showing the main frame and the driving member of the bicycle according to an embodiment of the present invention.
5 is a perspective view showing a driving member and a pinion of a bicycle according to an embodiment of the present invention.
6 is a plan view showing a driven gear of the bicycle according to an embodiment of the present invention.
7 is a side view showing a bicycle according to another embodiment of the present invention.
8 is a partial perspective view showing the front of the bicycle according to another embodiment of the present invention.

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

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

Bicycle according to an embodiment of the present invention is the front wheel 100, fork 110, the handle 120, the connection frame 210, the main frame 200, the saddle 220, the rear wheel 300, the rear wheel shaft It comprises a 310, driven gear 320, drive member 400, pinion 500 and bearing (510).

The front part of the bicycle consisting of the front wheel 100 and the fork 110 and the handle 120 has the same configuration as a general bicycle.

The main frame 200 is an arcuate member that is bent to draw an arc-shaped curve, and as shown in FIG. 4, the driving member passage 201 that is bored to draw an arc in the same way as the shape of the main frame 200 on both left and right sides. ) Is formed. The main frame 200 has a convex portion facing upwards, and the saddle 220 is coupled to an upper surface of the middle portion of the convex portion. The main frame 200 forms an arch shape, and thus the pressing force is distributed back and forth so that the frame itself absorbs the impact force even when overspeed or slope, even when the main frame 200 is not bent or cut. The connection frame 210 is a short curved member that connects between the front end of the main frame 200 and the fork. The main frame 200 and the connecting frame 210 may be made of steel, aluminum, carbon, titanium, or the like.

The rear end of the main frame 200 is divided into two branches so that each split portion is coupled with the rear wheel shaft 310 of the hollow shape as shown in FIG. 6 and the rear wheel is divided between the two split portions of the main frame 200. 300 is located. The rear wheel shaft 310 extends in both sides, and the driven gear 320 is coupled to each of the left and right portions of the rear wheel shaft 310. The driven gear 320 is a gear bundle composed of a plurality of cogs having different diameters, and the diameter decreases gradually toward the outside, and the inclination of the large gear and the small gear is about 40º. It is configured to be slightly inwardly reflecting the inclination of the shaving driven gear part 320 in which the teeth 420 of the driving member 400 are formed.

At the rear of the driven gear 320, a gear transmission for shifting a gear by moving a portion in which the teeth 420 of the driving member 400 are formed from side to side is installed. The teeth 420 of the drive member 400 should always be meshed with the gear teeth of the driven gear 320 and should not be derailed and idle, but the gear shifting device will be provided from the outside where the teeth 420 of the drive member 400 are formed. It also plays a role of preventing derailment and idle by pressing and fixing. Since the gear transmission is widely applied to a conventional bicycle, illustration and description will be omitted here. Since the rear end of the driving member 400 should be movable left and right for gear shifting, the driving member passage 201 of the main frame 200, in which the rear end of the driving member 400 is located, is open to the side and thus the driving member. The rear end of the 400 may be moved to the outside of the drive member passage 201.

The driving member 400 is an arcuate member that is bent to draw an arc-shaped curve of a semicircle as shown in FIG. 2, and is provided with a pair. As shown in FIG. 4, the pair of driving members 400 are installed to slide back and forth inside each of the pair of driving member passages 201. As shown in FIG. 3, a plurality of roller bearings are provided between the driving member 400 and the inner surface of the driving member passage 201 and the driving member 400 so that the driving member 400 can smoothly move in the driving member passage 201. 510 is installed.

The front end of the drive member 400 is provided with a pedal so as to step in the vertical direction, the rear end of the drive member 400 is formed with a tooth 420 on the surface facing forward. The teeth 420 of the driving member 400 mesh with the gears of the driven gear 320 to rotate the driven gear 320 when the driving member 400 moves up and down. There is a one-way rotary power mechanism using a ratchet gear between the driven gear 320 and the rear wheel 300 so that the rear wheel when the driven gear 320 is rotated forward while the teeth 420 of the drive member 400 are raised. Although the rotational force is transmitted to the 300, the rotational force is not transmitted to the rear wheel 300 when the driven gear 320 is rotated in the opposite direction while the teeth 420 of the driving member 400 are lowered.

The rack teeth 430 are formed on the surfaces of the pair of driving members 400 facing each other, and the pinion 500 is the main frame between the pair of rack teeth 430 as shown in FIG. 5. It is rotatably installed inside the 200 and engages a pair of rack teeth (430). Thus, when the driving member 400 is moved forward by stepping on the pedal of any one driving member 400, the pinion 500 rotates to move the other driving member 400 backward. As a result, the pair of driving members 400 alternately move up and down. The main frame 200 has a partition wall that separates the left driving member passage and the right driving member passage, but the partition where the pinion 500 is installed does not have such a partition.

7 and 8 illustrate another embodiment of the present invention, in which the means for driving the front wheel 100 is added while the contents shown in FIGS. 1 to 6 are included.

As shown in FIG. 8, each of the left side and the right side of the handle 120 is provided with a left guide frame 600 and a right guide frame 610 having a long rectangular frame shape in a forward and backward direction. The inside of the left guide frame 600 and the right guide frame 610 is empty.

The left front wheel gear and the right front wheel gear 710 are coupled to both sides of the shaft of the front wheel 100, and the one-way rotary electric mechanism is also provided between the left front wheel gear and the front wheel 100 and between the right front wheel gear 710 and the front wheel 100. Installed so that the front wheel 100 receives the rotational force only when the left front wheel gear and the right front wheel gear 710 rotate to one side, so that the reverse force is not applied to the front wheel 100.

The left power transmission member 800 is hinged to the left side of the fork 110, and the right power transmission member 810 is hinged to the right side of the fork 110. Upper portions of the power transmission members 800 and 810 penetrate through the guide frames 600 and 610, and upper ends of the power transmission members 800 and 810 are provided with handles 801 and 811. Lower gears 800 and 810 are provided at the lower ends of the power transmission members 800 and 810 so as to mesh with the front wheel gears. As shown in FIG. 7, the rack gear 812 is preferably bent so that both ends of the rack gear 810 are slightly lifted upward to be constantly engaged with the front wheel gear 710 even when the power transmission member 810 is hinged.

When the user grabs the handles 801 and 811 of the power transmission members 800 and 810 and moves them back and forth, the power transmission members 800 and 810 move back and forth within a predetermined range along the guide frame 600 and 610, and the handles can be moved left and right in the moving process. As a result, the rack teeth of the power transmission members 800 and 810 move forward and backward to rotate the front wheel gears. At this time, the front wheel 100 is supplied with the driving force only in a predetermined direction from the front wheel gears by the one-way rotating electric gear.

As described above, the present invention has been described only with respect to specific examples, but it will be apparent to those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention based on the above specific examples. And modifications belong to the appended claims.

100: front wheel 110: fork
120: handle 200: main frame
201: drive member passage 210: connecting frame
220: saddle 300: rear wheel
310: rear wheel shaft 320: driven gear
400: drive member 410: pedal
420: tooth 430: rack teeth
500: pinion 510: bearing
600: left guide frame 610: right guide frame
710: right front wheel gear 800: left power transmission member
801: left handle 810: right power transmission member
811: right handle 812: right rack gear

Claims

A front wheel steering unit including a front wheel, a fork to which the front wheel is rotatably connected, and a handle connected to the top of the fork;
A connecting frame coupled to the fork and extending backward;
The front end is coupled to the connecting frame and the rear end is divided into two for each of the rear wheel shaft is supported, has a convex arc shape toward the upper side, and the drive member passage extending in the form of an arc in each of the left inner and right inside and extending long forward and backward A mainframe formed;
A saddle coupled to an upper portion of the main frame;
A rear wheel rotatably coupled to the rear wheel shaft so as to be located between two forked portions of the rear portion of the mainframe;
A pair of driven gear parts rotatably coupled to each of the rear wheel shaft and the left and right parts of the rear wheel;
It has a circular arc shape to enable forward and backward movement along the drive member passage, and a left and right pair is slidably installed inside each of the left and right pair of drive member passages, and each front end portion is located outside the drive member passageway and pedaled. A pair of left and right drive members each of which has a rear end disposed at an outer side of the drive member passageway and having teeth engaged with gears of the pair of driven gear parts;
A pair of rack teeth formed long in the front-rear direction on each of the opposing surfaces of the middle portion of the pair of drive members;
A pinion which is engaged with all of the pair of racks and is fitted between the pair of racks so as to be rotatable about a vertical axis of rotation installed inside the main frame; And
It is coupled to the driven gear and the rear wheel is provided between the driven gear and the rear wheel is configured to include a rear wheel one-way rotary transmission mechanism so that the driving force of the driven gear is transmitted to the rear wheel only when the rack teeth are raised. Bicycle.

The method of claim 1,
And a bearing is installed between the driving member and the driving member passage so that the driving member is supported to move in the front and rear direction by the bearing.

3. The method according to claim 1 or 2,
A left guide frame provided on the left side of the handle and extending in the front-rear direction and having an empty inside;
A right guide frame provided on the right side of the handle and extending in the front-rear direction and having an empty inside;
A left front wheel gear coupled to the left side of the front wheel shaft;
A right front wheel gear coupled to the right side of the front wheel shaft;
A left handle is provided at the upper end and a left rack gear is engaged with the left front wheel gear at the lower end, and an upper portion of the left rack gear is hinged to the fork and a portion below the left handle penetrates the left guide frame. Left power transmission member;
The upper right side is provided with a right handle and the lower right side is provided with a right rack gear that meshes with the right front wheel gear, an upper portion of the right rack gear is hinged to the fork, and a portion under the right handle penetrates the right guide frame. The right power transmission member;
A left front wheel one-way rotary electric machine provided between the left front wheel gear and the front wheel in combination with the left front wheel gear and the front wheel to transmit the driving force of the left front wheel gear to the front wheel only when the teeth of the left rack gear move forward. ; And
A right front wheel one-way rotary electric machine provided between the right front wheel gear and the front wheel in combination with the right front wheel gear and the front wheel to transmit the driving force of the right front wheel gear to the front wheel only when the teeth of the right rack gear move forward. It is configured to include more
Holding the left handle and the right handle and reciprocating back and forth along the left frame and the right frame within a range limited by the left frame and the right frame, the left power transmission member and the right power transmission member By the hinge movement, the left front wheel gear meshed with the left rack gear and the right front wheel gear meshed with the right rack gear rotate. At this time, the left front wheel gear and the right front wheel gear rotate the left front wheel one-way rotary power mechanism and the right front wheel one direction. And the front wheel shaft is configured to receive the rotational force of the left front wheel gear and the right front wheel gear only in the direction in which the bicycle is advanced by the rotary electric mechanism.