KR20010049491A - Front and rear-drive method of a bicycle of a pedal - Google Patents

Abstract

PURPOSE: A bicycle having a forward and backward driving pedal is provided to let a user travel for a long time by making a bicycle advance even if a pedal is driven backwardly and to prevent backward slip during suspension. CONSTITUTION: An upper guide sprocket(12) idly mounted on the upper part of a support member(10) lengthwise installed in the upper part of a backward driving sprocket(6) installed on a drive shaft(5) and a rear guide sprocket(16) combined to a backward rotating shaft(15) are connected via driving chains(18). A forward driving sprocket(7) is installed on the drive shaft to forwardly rotate and backwardly idle. An auxiliary guide sprocket(17) idling on the backward rotating shaft is connected via an auxiliary chain(19). A bicycle travels forwardly even when a pedal is driven backwardly. Therefore, a user rides on the bicycle for a long time by changing stance. When going up an uphill road, the user travels with slight force by backwardly stepping on the pedal.

Description

Front and back drive bicycle of the pedal {FRONT AND REAR-DRIVE METHOD OF A BICYCLE OF A PEDAL}

The present invention relates to a driving device of a bicycle, and more particularly, to a front and rear drive type bicycle of a pedal such that the bicycle is traveling forward even when the pedal is stepped forward as well as the pedal is pushed backward.

In general, bicycles that have been widely used for transportation or exercise are driven to transmit the driving force generated when the pedal is pressed to the rear wheels by the chain, so that the rear wheel is rotated so that the driving is performed.

However, since the conventional bicycle is configured to be driven only when the pedal is pressed forward, a lot of power is consumed and the effect of the overall exercise is insufficient.

That is, the driving of the conventional bicycle is made by the force generated when the pedal is pressed by the foot, so the pedal must be continuously rotated in the forward direction, causing excessive strain on the foot and causing fatigue, and the muscles of the foot are biased in one direction. Therefore, the overall muscle movement could not be expected.

In addition, the weight of the occupant is moved to the rear when using the conventional bicycle uphill, while the pedal must be stepped forward, so the pedaling position is inconvenient and the foot is exerted, resulting in a lot of power consumption. It easily caused fatigue.

Furthermore, if the vehicle is stopped at the time of going up a hill, when the bicycle is pushed back or the pedaled foot is released from its position, the wheel of the bicycle is rapidly moved downward along the slope by the load, causing a safety accident.

The present invention has been researched and developed in order to solve the above problems, as the bicycle is traveling forward even when stepping on the pedal forward, as well as stepping backward, not only can easily run for a long time without feeling fatigue, The technical challenge is to ensure that the muscles of the foot are exercised evenly throughout.

Another technical problem of the present invention is to not only be able to travel with a small force, but also to be prevented from being pushed back when stopped by stepping on the pedal backward when climbing a hill.

1 is a perspective view showing an important part of the present invention.

2 is a front view showing a part of the present invention.

Figure 3 is a side cross-sectional view showing a coupling state of the reverse drive sprocket and the forward drive sprocket of the present invention.

Figure 4 is a side view cut away a part showing the clutch member of the present invention.

* Description of Signs of Main Parts of Drawings *

1: Pedal 4: Power Sprocket

5: drive shaft 5a: rear wheel shaft

6: reverse drive sprocket 7: forward drive sprocket

8, 80: one-way gear 9, 90: one-way drive member

9a, 90a: locking projection 10: support member

12: upper guide sprocket 13: expansion lever

15: rear pivot 16: rear guide sprocket

17: auxiliary induction sprocket 18: drive chain

19: auxiliary chain

The present invention is a bicycle that is known to be driven forward by driving the rear wheels when the pedal is pressed, the power sprocket equipped with the pedal and the reverse drive sprocket is installed on the rear wheel shaft to be rotated in one direction, the upper portion of the reverse drive sprocket Connect the upper and lower guide sprockets respectively installed at the rear side and the rear side with the drive chains, and install the forward drive sprocket on the same axis of the reverse drive sprocket, and the auxiliary guide sprocket on the same axis of the rear guide sprocket. It consists of connecting forward drive sprocket and auxiliary guide sprocket by auxiliary chain.

According to the present invention, when the power sprocket is rotated by pressing the pedal forward, the reverse driving sprocket is idling and the forward driving sprocket is rotated by the auxiliary induction sprocket rotated together with the rear induction sprocket, so that the rear wheel is driven to the front side.

In addition, when the pedal is pressed backward, the forward drive sprocket is idling and the reverse drive sprocket is rotated so that the rear wheel is rotated forward.

Hereinafter, the configuration and operation of the present invention will be described in detail by the accompanying drawings.

1 is a perspective view showing an important part of the present invention, Figure 2 is a front view showing a part of the present invention, Figure 3 is a front sectional view showing a coupling state of the reverse drive sprocket and the forward drive sprocket of the present invention, Figure 4 is It is a side view which cut away the part which showed the clutch member of this invention.

As shown in FIG. 1, the crank 2 having two pedals 1 coupled to the upper and lower portions is fixed to the power rotating shaft 3, and the power sprocket 4 is attached to the power rotating shaft 3. Mount it securely.

In addition, the reverse drive sprocket 6 and the forward drive sprocket 7 are respectively mounted on the drive shaft 5 for rotating the rear wheel, so that the respective reverse drive sprocket 6 and the forward drive sprocket 7 are rotated forward. It is connected to the drive shaft (5), the power is transmitted, and when rotated to the rear, the drive shaft (5) and the connection is dismantled so that the device is idle.

The configuration in which the reverse drive sprocket 6 and the forward drive sprocket 7 are mounted on the drive shaft 5 is as shown in FIG.

That is, as shown in Figure 3, the one-way gear (8) is formed in the inner center of the reverse drive sprocket (6), and the one-way drive member (9) is provided with the engaging projection (9a) is provided on the outer peripheral surface The locking projection 9a is positioned inside the one-way gear 8 so as to be caught and supported by the teeth of the one-way gear 8, and the driving shaft 5 is fitted to the inner center of the one-way drive member 9.

In addition, the one-way gear 80 is formed in the center of the forward drive sprocket 7, and the one-way drive member 90 having the elastically provided locking projection 90a protrudes on the outer circumferential surface is located inside the one-way gear 80. By engaging the engaging projection (90a) to be supported by the teeth of the one-way gear (80), by fixing the drive shaft (5) in the inner center of the one-way drive member 90, the forward drive sprocket (7) and the The reverse drive sprocket 6 is mounted on the drive shaft 5.

As shown in FIG. 2, the upper guide sprocket 12 is idly rotated on the upper pivot shaft 11 formed at the upper end of the support member 10 coupled to the driving shaft 5 so that the lower end is flowable. The flexible lever 13 is fluidly coupled to the support member 10 and the threaded portion 13a is formed at the other end to pass the threaded portion 13a through the support piece 13b fixed to the bicycle body b. 13c).

As shown in FIG. 1, the upper end forms the rear pivot 15 at the lower end of the support member 14 coupled to the upper pivot 11, and the rear guide sprocket 16 and the auxiliary guide sprocket 17 ) Is set to idle on the rear pivot 15.

As described above, by connecting the drive chain 18 and the auxiliary chain 19 to each sprocket in the state where each sprocket is installed, the drive chain 18 supported by the front teeth of the power sprocket 4 is supported. The upper side is extended backward to support the lower teeth of the reverse drive sprocket 6, and then the upper side is extended to support the upper teeth of the upper guide sprocket 12, and continues downward to extend the rear induction sprocket ( The power sprocket 4 and the reverse drive sprocket 6 are driven by the drive chain 18 while supporting the rear teeth of 16 and extending forward to connect to the portions supported over the teeth of the power sprocket 4. ) And the upper induction sprocket 12 and the rear induction sprocket 16 is in turn connected.

In addition, the forward drive sprocket 7 and the auxiliary induction sprocket 17 is connected to the auxiliary chain (19).

As shown in (a) and (b) of FIG. 4, the clutch member 20 is moved to the drive shaft 5 so that the power of the reverse drive sprocket 6 and the forward drive sprocket 7 is transmitted or blocked to the drive shaft 5. 5) and the rear wheel shaft (5a). The clutch member 20 fixes the clutch gear 21 to the rear wheel shaft 5a, and positions the tubular body 22 extending to the drive shaft 5 on the outside of the clutch gear 21, and the spring 23a. A clutch handle (not shown in the drawing) fitted with a rotating handle to engage the power transmission tooth 23 driven by the clutch gear 21 with the upper portion of the wire 24 long connected to the power transmission tooth 23 on the outside. Extend it up to

Thus, the operation of the present invention configured as follows.

In the bicycle of the present invention, the driver sits in a seat and drives the vehicle in the usual way while holding the handle by hand and presses the pedal. The bicycle is driven forward even when the pedal is pressed forward or backward.

That is, when the driver presses the pedal 1 forward, the power sprocket 4 rotates clockwise, that is, forward, so that the upper line 18a of the drive chain 18 connected to the power sprocket 4 moves forward. Is moved. The reverse drive sprocket 6 is rotated counterclockwise, i.e., rearward by the movement of the drive chain 18, and the drive chain 18 is rearwardly lowered again from the lower part to the upper part by the rotation of the upper guide sprocket 12. The rear guide sprocket 16 is rotated clockwise, that is, forward while being turned to.

As the rear guide sprocket 16 is rotated and the auxiliary guide sprocket 17 fixed to the rear pivot 15 is rotated in the same direction, the auxiliary chain 19 is moved so that the forward drive sprocket 7 is clockwise, that is, forward Is rotated to.

As the forward drive sprocket 7 is rotated forward, the drive shaft 5 is integrally rotated so that the rear wheel coupled to the drive shaft 5 is driven clockwise, that is, the front is driven forward.

In addition, when the driver feels fatigue or tries to climb the uphill while stepping on the pedal 1 forward, the driver presses the pedal 2 backward, and in this case, the bicycle runs forward.

That is, when the driver presses the pedal 1 backward, the power sprocket 4 rotates counterclockwise, ie backward, so that the lower line 18b of the drive chain 18 connected to the power sprocket 4 is forward. Is moved to. By the movement of the drive chain 18, the auxiliary induction sprocket 16 is rotated counterclockwise, that is, rearward and the auxiliary induction sprocket 17 fixed to the rear pivot 15 rotates in the same direction. ) Is moved so that the forward drive sprocket 7 rotates counterclockwise, i.e., to the rear side. As the rear guide sprocket 16 is rotated to the rear, the upper guide sprocket 12 is also rotated in the same direction, and the drive chain 18 whose direction is changed by the upper guide sprocket 12 is the reverse drive sprocket 6 Since it rotates clockwise, ie forward, the rotational force of the reverse drive sprocket 6 is transmitted to the drive shaft 5 so that the rear wheel is driven clockwise, that is, the front is driven forward.

The reverse drive sprocket 6 and the forward drive sprocket 7 are rotated in opposite directions, respectively, and as shown in FIG. 3, the locking projection 9a is rotated clockwise, that is, forward. The rotational force is transmitted to the drive shaft 5 by being supported by the gear 8, and when the wheel is rotated counterclockwise or backward, the locking projection 9a is released from the one-way gear 8 so that the power to the drive shaft 5 is cut off. As the pedal 1 is pressed forward, the reverse drive sprocket 6 is idling and the power is transmitted by the forward driving sprocket 7, and when the pedal 1 is stepped backward, the forward driving sprocket 7 is idle and the reverse Since the power is transmitted by the driving sprocket 6, the rear wheel of the bicycle is always moved forward, and since the rear wheel is always powered, the rear wheel of the bicycle is not prevented from being unintentionally reversed when climbing the path. Without rotation (1) which will lift ticks also running in the vertical direction.

In addition, by adjusting the nut (13C) of the expansion lever 13, the support member 10 is moved to the left and right, and by appropriately adjusting the position of the support member 10, respectively, when pressing the pedal (1) backward Sprockets, in particular, the power sprocket 4 to maintain the tension of the drive chain 18 in the reverse drive sprocket 6, by adjusting the position of the support member 10 in a state in which the entire drive chain 18 is taut It is desirable to keep it.

As shown in FIG. 4, the driving shaft 5 may be connected to or short-circuited to the rear wheel shaft 5a. As a result, the power transmission teeth 23 are engaged with the clutch gear 21 by the pressing force of the spring. The drive shaft 5 is connected to the rear wheel shaft 5a.

In addition, when the driver manipulates the clutch knob and pulls the wire 24 upward, the power transmission tooth 23 is moved upward and separated from the clutch gear 21 so that the drive shaft 5 is short-circuited with the rear wheel shaft 5a. That is, when the driver wants to move the bicycle rearward, the rear wheel cannot be rotated rearward when the driving shaft 15 is connected to the rear wheel shaft 5a. Thus, the clutch handle is operated to move the driving shaft 5 to the rear wheel shaft 5a. If the short circuit from the rear wheel is idle, you can reverse.

As described above, the present invention because the bicycle is running forward in addition to stepping forward, as well as stepping backward, when the driver stepped forward in front of the pedal feels fatigue, not only can feel less fatigue, While pedaling back and forth is effective to ensure that the entire muscles of the legs evenly developed.

In addition, since the weight of the driver sitting in the seat is tilted backwards when climbing the hill, stepping on the pedal back toward the weight, rather than stepping forward, there is an effect that can drive down the hill with less force.

In addition, since the driving shaft for rotating the rear wheel is selectively powered by the reverse driving sprocket or the forward driving sprocket, the bicycle can be safely driven when the hill is climbed without being unintentionally backed up.

Moreover, even if the pedal is repeatedly moved up and down while repeatedly pedaling back and forth like the seesaw method without rotating the pedal, the bicycle is running, and thus the driving speed is low and the driving force is low.

As described above, the present invention can be used simply by mounting the device of the present invention to an existing bicycle without changing the overall structure of the bicycle, and also can be used more effectively if additionally equipped with a known gear conversion device It is a profitable invention that can be easily applied to all bicycles to maximize the effect.

Claims (4)

The reverse drive sprocket provided in the drive shaft 5 so that the rotational force of the power sprocket 4 equipped with the pedal 1 is transmitted to the rear wheel by the chain, and is connected to a known bicycle, which is rotated forward and idle idling backwards. (6), and the upper guide sprocket 12 and the upper guide sprocket 12 and the upper guide sprocket 12, which is installed to be idling on the upper part of the support member 10 installed to the upper portion of the reverse drive sprocket 6 and installed long The rear guide sprocket 16 coupled to the rear pivot 15 is idled to the lower part of the member 10, respectively, by the drive chain 8, and is mounted on the drive shaft 5 so as to be rotated forward and idle back. The forward and backward driving method of the pedal, characterized in that it is configured by connecting the auxiliary drive sprocket (7) and the auxiliary induction sprocket (17) which is arranged to idle on the rear pivot shaft (15) by the auxiliary chain (19). . The method of claim 1, The reverse drive sprocket 6 and the forward drive sprocket 7 form one-way gears 8 and 80 at the inner side of the center, and the one-way drive members 9 and 90 protruding from the protrusions 9a and 90a. To the inner side of the one-way gear (8) (80) to engage the engaging projection (9a) (90a) to be caught on the teeth of the one-way gear (8) (80), the inner side of the one-way drive member (9) (90). A pedal front and back drive type bike, characterized in that configured by fixing the drive shaft (5) in the center. The method of claim 1, The pedal back and forth drive system, characterized in that configured to be adjusted to the support member 10 by the expansion lever (13). The method of claim 1, The front and rear drive bicycle of the pedal, characterized in that the drive shaft (5) and the rear wheel shaft (5a) is configured to be connected or short-circuited by the clutch member (20).