KR0141510B1 - Advanced orerating travelling system of bicycle - Google Patents

Abstract

According to the present invention, the driving parts are mounted in the undercarriage of the pedal shaft to eliminate the factors that may impede the accessories, and the reverse driving force transmitted to the pedal shaft is controlled by the ratchet control means or the engagement means. It is converted and driven by a bevel gear that is formed to be rotatable in the cylindrical retainer, so that this driving force is transmitted to the driving sprocket connected to the rear wheel and the chain, so that the forward rotation of the pedal is made according to the intention of the occupant. And a forward bevel gear driving device of a bicycle capable of driving forward driving by converting the reverse rotation, the first bevel gear 50 being fixed to the pedal shaft to connect and transmit the rolling force of the pedal; A cylindrical retainer 40 coupled to the first bevel gear 50 with a one-way drive transmission means and capable of rotating only in one direction by a ratchet control means; A second bevel gear (60) formed to be rotatable at equal intervals on the cylindrical retainer (40) so as to be engaged with the first bevel gear (50); A third bevel gear (70) coupled to the pedal shaft (10) by one-way drive transmission means and simultaneously engaged with the second bevel gear (60) to be driven and rotated; It is composed of a drive sprocket 80 coupled to the third bevel gear 70 is connected to the rear wheel and the chain.

Description

Bicycle forward drive

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view of a forward traveling device of a bicycle of a first embodiment of the present invention.

2 is an enlarged exploded perspective view of the main portion of the ratchet control means and the cylindrical retainer of the first embodiment of the present invention;

3 is a longitudinal sectional view of a forward traveling device for a bicycle of a second embodiment of the present invention;

(A) and (b) are enlarged sectional views of the main part of the engagement means of the present invention, in which the pedal shaft is driven in the reverse direction and in the forward drive.

5 is a cross-sectional view taken along the line A-A of FIG.

* Explanation of symbols for the main parts of the drawings

10: pedal shaft 12: chassis

20: one-way drive transmission means 30: ratchet control means

40: cylinder holder 41: ratchet

50: first bevel gear 51: spline key

60: second bevel gear 70: third bevel gear

80: drive sprocket 90: ratchet hog

100: release ring body 101: release lever

102: release step 200: engagement means

210: fixed latch wheel 220: ratchet ring body

The present invention relates to a forward drive driving device for a bicycle which has been improved and improved domestic patent application No. 94-21408 of the present application, and after the lever is selected and adjusted according to the intention of the occupant, the pedal is reversed as the pedal is reversed. The driving force is controlled by the ratchet control means or the engagement means, so that the forward drive can be performed by the conversion drive of the bevel gear of the cylindrical holder which can be controlled and rotated. It is related to the forward drive system of the bicycle to enable idle idling during reverse driving, to reduce the fatigue of the occupants, to prevent the loss of power, and to train the balanced development of the leg muscles in daily life.

In general, a forward drive driving device of a bicycle capable of transmitting a driving force to a wheel by stepping on a pedal includes a drive sprocket formed on the pedal shaft and driven by rotation of the pedal shaft, and connected to the drive sprocket by a chain, thereby driving the drive sprocket of the pedal shaft. It consists of a driven sprocket which allows the driving force to be transmitted to the rear wheel.

In the forward drive system of such a bicycle, when the pedal is rolled in the forward rotation direction, the bicycle can be driven forward by the forward drive, so that the occupant continues to run on a slope or travels a long distance. In this case, as the pedal is continuously pressed in one direction, fatigue is easily brought to the legs.

Therefore, if the occupant intentionally or unconsciously rotates the pedal in order to alleviate the fatigue of the foot during the driving, the driving force of the pedal can be transmitted only in the forward driving direction of the one-way clutch means of the driven sprocket on the rear wheel side. Since the reverse rotation driving force of the pedal is idling without being transmitted to the rear wheel, there is a drawback in that the driving force of the forward drive of the bicycle is lost.

In addition, a reverse drive device for allowing a bicycle to be advanced by driving by forward driving and driving by reverse driving in a bicycle reverse drive forward device of Korean Utility Model Publication No. 92-1405 is disclosed.

This forms a spur gear of larger diameter with another chain gear in front of the small chain gear on the same axis, and drives a spur gear having a smaller diameter which is driven in connection with a known small chain gear. As the known small chain gear is driven by the pedal, the bicycle is driven forward, and also the small chain gear, the large spur gear, and the small spur gear are connected and driven by the reverse driving of the pedal. It is supposed to be.

In the case of the reverse drive device as described above, a separate chain gear, a small spur gear and a large spur gear should be exposed to the outside, so that the installation space is required separately, and the addition of the above-mentioned accessories exposed to the outside Due to this, there is a defect that the total weight of the bicycle increases.

In addition, there is a defect that can easily fatigue the legs when running for a long time because there is no idling made by rolling the pedal backward like a conventional bicycle.

In addition, in Korean Utility Model Publication No. 91-3786, a ring gear and a driving gear are formed on the main shaft of the spline wheel where the pedal is formed, and a separate gear is engaged with the ring gear and the driving gear on the support of the main shaft. When the occupant rotates the pedal rotation forward or reverse, the spline wheel between the driven shafts is always rotated forward.

However, the weight of the entire bicycle may be reduced to some extent due to the miniaturization and reduction of parts compared to the conventional forward driving device described above, but as described above, there is no idling caused by rolling the pedal backward as in the conventional bicycle, There are unreasonable shortcomings that can easily cause fatigue on your legs.

In addition, in the case of the above example, the reverse driving accessories are exposed to the outside of the bicycle, there is a defect that may cause the failure by impairing the accessories by snow, boiling in the winter or summer.

The present invention is to solve the above problems, by mounting the drive parts in the chassis of the pedal shaft to eliminate the factors that can interfere with the accessories, and the reverse drive force transmitted to the pedal shaft is ratchet control It is converted and driven by a bevel gear rotatably formed in the cylindrical holder controlled by the means or the engagement means, so that the driving force of the forward rotation can be transmitted to the driving sprocket connected to the rear wheel and the chain. According to the intention of the occupant, the forward and reverse rotation of the pedal is driven so that the driving of the forward driving is carried out, and the reverse driving force of the pedal can be converted to idling like the conventional bicycle. This makes it possible to increase the range of driving choices according to the intention of the occupant, The present invention also provides a forward driving device for a bicycle that can reduce the fatigue of the occupant and reduce the fatigue of the occupants.

The first embodiment of the present invention is fixed to the pedal shaft and the first bevel gear capable of connecting and transmitting the rolling force of the pedal; A cylindrical retainer coupled to the one bevel gear and in one direction drive transmission means and capable of rotating only in one direction by a ratchet control means or a clutch control means; A second bevel gear formed on the cylindrical retainer so as to be rotated at equal intervals so as to be engaged with the first bevel gear; A third bevel gear coupled to the pedal shaft and one-way drive transmission means and simultaneously engaged with the second bevel gear to be driven and rotated; It is composed of a driving sprocket coupled to the third bevel gear is connected to the rear wheel and the chain.

In addition, the cylindrical holder has a ratchet formed on one side thereof, and can be controlled by the ratchet control means so that the cylindrical holder is rotatable when the pedal shaft is rotated forward and fixed at the reverse rotation. .

The ratchet control means may include: a plurality of ratchet hooks that are elastically coupled to the ratchet of the cylindrical holder to control driving in the reverse direction of the cylindrical holder; The ratchet teeth and the ratchet hooks are formed of a release ring body capable of releasing engagement by the release lever.

In addition, the release ring body is formed with a release step at equal intervals on the circumferential surface, and is rotatably formed on the circumferential surface of the ratchet teeth of the cylindrical holder.

According to a second embodiment of the present invention, the cylindrical holder is formed to be rotatable only in one direction by the engagement means.

In addition, the cylindrical holder is formed on the side wall circumferential surface with ratchets at equal intervals.

The engaging means is formed of a fixed latch wheel which is elastically movable horizontally, and a ratchet and a ratchet ring body of the cylindrical holder which can be engaged with the fixed latch wheel.

In addition, the ratchet ring body has a ratchet teeth formed on one side thereof so as to be rotatable on a stepped portion of the outer periphery of the ratchet teeth of the cylindrical holder, and the ratchet of the cylindrical latch body with respect to the ratchet teeth of the fixed ratchet wheel. It is designed to be engaged with the cheat.

In addition, the ratchet of the ratchet ring body has a larger tooth dimension than the ratchet of the cylindrical holder, and when the ratchet of the ratchet ring body engages with the top of the ratchet teeth of the fixed ratchet wheel, The engagement with the ratchet teeth of the fixed ratchet wheel is released so that the cylindrical holder is rotatable.

According to the present invention as described above, according to the intention of the occupant, by the operation of the lever, as the pedal is driven forward and reverse rotation by the ratchet control means or the engagement means of the cylindrical retainable that can be rotated The bevel gear can be used to drive the bicycle forward, and to be able to drive forward and idle like other bicycles. It can also reduce fatigue of passengers.

Referring to the first embodiment of the present invention in detail as follows.

As shown in FIG. 1 and FIG. 2, the forward traveling device of the present invention includes: a first bevel gear 5 which is fixed to the pedal shaft 10 and which can transfer the rolling force of the pedal 11; A cylindrical retainer 40 coupled to the one-way drive transmission means 20 at the outer circumference of the first bevel gear 50 and capable of rotating only in one direction by the ratchet control means 30; Second bevel gears (60) formed so as to be rotatable about a fixed shaft (61) inside the cylindrical retainer (40) so as to be engaged with the first bevel gear (50); A third bevel gear (70) coupled to the pedal shaft (10) and the one-way drive transmission means (20) and simultaneously engaged with the second bevel gear (60) to be driven; Coupled with the third bevel gear 70 is formed of a drive sprocket 80 is connected to the driven sprocket of the rear wheel and the chain.

In particular, the first bevel gear 50, the cylindrical retainer 40, the second in the cylindrical chassis 12 on which the pedal shaft 10 is mounted, as shown in FIG. The bevel gear 60 and the third bevel gear 70 are mounted.

In addition, the inside of the first bevel gear 50 is fixed to the pedal shaft 10 by a fixing means such as a spline key 51 to be driven together with the pedal shaft 10.

The outer side of the first bevel gear 50 is connected to the cylindrical holder 40 by a one-way drive transmission means 20.

This one-way drive transmission means 20 uses a drive means such as a clutch bearing.

In addition, the cylindrical holder 40 is formed in a cylindrical shape as shown in FIG. 2, and is rotatably mounted by the fixed shafts 61 of the plurality of second bevel gears 60 in the cylinder. A ratchet 41 having a predetermined pitch is formed on one side of the cylindrical holder 40, and the ratchet 41 can be controlled by the ratchet control means 30, so that the pedal shaft 10 is provided. In this forward rotation, the cylindrical retainer 40 is rotatable and fixed in the reverse rotation.

In addition, a holding cylinder 42 to which the chassis 12 is fixed is coupled to an outer circumference of the cylindrical holder 40 to smoothly rotate the cylindrical holder 40.

In addition, the ratchet control means 30 is elastically coupled to the ratchet 41 of the cylindrical holder 40 as in the second diagram to control the driving of the cylindrical holder 40 in the reverse direction. A plurality of ratchet hooks 90; The latch 41 and the latch hook 90 are formed of a release ring body 100 that can release the engagement by the release lever 101.

The release ring body 100 has a release step 102 formed at equal intervals on the circumferential surface thereof, and the ratchet 41 of the cylindrical holder 40 is rotatably formed on the circumferential surface thereof.

The ratchet hook 90 is formed in a sawtooth shape, the hook shaft 91 of the ratchet hooks 90 is coupled to the holding cylinder 42 like the first diagram so as to be free to rotate, and the spring 92 ), The ratchet 41 of the cylindrical holder 40 is held in elasticity to control the cylindrical holder 40 so that the cylindrical holder 40 can rotate only in the forward direction.

In addition, the release ring body 100 is formed in the shape of a cap like a second degree, so as to connect a wire or the like to one of the release levers 101 so that it can be operated from the handle portion of the bicycle, the cylinder holding the release ring 100 The ratchet of the sieve 40 is rotatably adjustable at a fixed interval from the outer circumference of the 41.

By the adjustment of the rotation of the release ring body 100, the release step 102 is to release the engagement of the ratchet 41 of the cylindrical holder 40 of the ratchet hooks 90.

The copper portion 13 of the release ring body 100 is coupled to the copper member 13 to prevent infiltration of dirt.

The third bevel gear 70 is to be engaged with the second bevel gear 60 described above, the third bevel gear 70 is a one-way drive connecting means to the pedal shaft 10 as a first degree The needle bearing 20 is connected to the second bevel gear 60 to be engaged with the needle bearing.

In addition, a driving sprocket 80 connected to the rear wheel and the chain is fixed to the outer circumference of the third bevel gear 70 by a coupling means such as a screw 81.

Referring to the operation and effect of the present invention as described above, by adjusting the release lever 101, the release step 102 of the release ring body 100 pushes up the ratchet hook 90 to the bottom of the cylindrical retainer 40. After the engagement with the cheat 41 is released, when the pedal 11 is rolled in the forward direction, the first bevel gear connected to the pedal shaft 10 and the spline key 51 according to the rotation of the pedal shaft 10 ( 50) is delivered.

Even if the pedal 11 is rotated in the forward direction without adjusting the release lever 101 in the above, the ratchet 41 and the ratchet hook 90 of the cylindrical holder 40 are rotated in the forward direction of the pedal 11. Of the second bevel gear 60 and the third bevel gear of the first bevel gear 50 and the cylindrical retainer 40, since the engagement of the 70 is in the state of engagement with the cylindrical retainer 40 also in the circular motion in accordance with the forward rotation of the pedal shaft 10 is transmitted to the rolling force of the pedal directly to the drive sprocket 80 can drive the bicycle forward.

When the pedal 11 is driven in the reverse direction in the above state, the third bevel gear 70 and the cylindrical retainer 40 on which the pedal shaft 10 and the drive sprocket 80 are mounted are connected to the first bevel gear 50. Since it is connected to the one-way drive transmission means 20 and idling in the reverse direction, the driving force of the pedal shaft 10 is not transmitted to the driving sprocket 30, so that idling is not transmitted to the rear wheels.

Next, when the cylindrical holder 40 is rolled in the reverse direction in a state where the cylindrical holder 40 is fixed by the ratchet hook 90, the first bevel gear 50 of the pedal shaft 10 is the cylindrical holder. An engagement driving with the second bevel gear 60 of 40 is made.

As a result, the second bevel gear 60 is also engaged with the third bevel gear 70 to finally drive the driving sprocket 80 in the forward direction.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 to 5.

The description overlapping with the first embodiment will be omitted.

As shown in FIG. 3 and FIG. 4, the cylindrical holder 40 of the present invention can be rotated in only one direction by the engagement means 200. FIG.

In the cylindrical holder 40, ratchets 41 are formed at equal intervals on the side wall circumferential surface thereof.

The engaging means 200, the latch ratchet 41 of the cylindrical latch 40, which is capable of engaging with the fixed ratchet wheel 210 and the fixed latch wheel 210, which can be horizontally elastically elastically movable. ) And the ratchet ring body 220.

The fixed latch wheel 210 is coupled to the holding cylinder 42 and the spline 212 as a third degree, and is elastically horizontally movable by the coil spring 211 with the copper member 13. .

The ratchet ring body 220 is rotatably formed at the step of the outer periphery of the ratchet 41 of the cylindrical holder 40, and at the side of the ratchet 41 of the cylindrical holder 40. An extended ratchet 221 is formed to engage the ratchet 41 of the cylindrical holder 40 with the ratchet 213 of the fixed latch wheel 210.

In addition, the ratchet teeth 221 of the ratchet ring body 220 have a larger tooth dimension than the ratchet teeth 41 of the cylindrical holder 40, as shown in FIG. When the ratchet of the fixed latch wheel 210 is engaged with the top of the 41 as shown in (b), the ratchet 41 of the cylindrical holder 40 and the ratchet of the fixed ratchet wheel 210 are closed. Engagement with the cheat 213 is released, and the cylindrical holder 40 is rotatable.

The latch ring body 220 is formed to be operable by an operation lever (not shown) to which the lever 300 is fixed and operable from the outside.

Referring to the operation and effect of the present invention as described above, since the fixed latch wheel 210 maintains a state in which the elastic force is applied to the right side in FIG. 3 by the coil spring 211, the pedal shaft ( When the 10 is driven in the forward direction, the cylindrical retainer 40 is maintained because the first bevel gear 50 of the pedal shaft 10 is engaged with the second bevel gear 60 of the cylindrical retainer 40. To rotate in the forward direction.

Accordingly, the inclined surface of the ratchet teeth 213 of the fixed ratchet wheel 210 in which the ratchet teeth 41 of the cylindrical holder 40 and the ratchet teeth 221 of the ratchet ring body 220 are held in engagement with each other is maintained. The force to be pushed pushes the fixed latch wheel 210 and overcomes the elastic force of the coil spring 211, so that the ratchet of the cylindrical holder 40 with respect to the fixed latch wheel 210 as shown in FIG. 41 and the ratchet teeth 221 of the ratchet ring body 220 maintain engagement.

In particular, the ratchet 221 of the ratchet ring body 220 is higher than the ratchet 41 of the cylindrical holder 40 so that the ratchet 41 of the cylindrical holder 40 is fixed ratchet wheel 210. Since it is not in contact with the cylindrical cylinder 40 without noise, it becomes freely rotatable.

Accordingly, when the pedal 11 is continuously rolled in the above state, the first bevel gear 50 and the second bevel gear 60 and the third bevel gear 70 of the cylindrical holder 40 are engaged with each other. In the cylindrical retainer 40 also performs a circular motion in accordance with the forward rotation of the pedal shaft 10 is transmitted to the rolling force of the pedal directly to the drive sprocket 80 can drive the bicycle forward.

In addition, when the pedal 11 is driven in the reverse direction in the above state, the third bevel gear 70 on which the pedal shaft 10 and the drive sprocket 80 are fixed is in an idle state by the one-way drive transmission means 20. In addition, since the cylindrical holder 40 is in the idling state, the driving force of the pedal shaft 10 is not transmitted to the driving sprocket 30 so that the idling power is not transmitted to the rear wheel.

Next, when the lever 11 of the latch ring body 220 is operated to roll the pedal 11 in the reverse direction in the state of FIG. 4 (a), the cylindrical holder 40 is fixed and the pedal shaft 10 The first bevel gear 50 of) is engaged with the second bevel gear 60 of the cylindrical holder (42).

As a result, the second bevel gear 60 is also engaged with the third bevel gear 70 to finally drive the driving sprocket 80 in the forward direction.

As described above, according to the intention of the occupant, according to the intention of the occupant, the driving of the forward and reverse rotation of the pedal is performed so that the forward driving is carried out, thereby increasing the range of the driving selection in accordance with the intention of the occupant, which is boring even for a long time. It does not feel uncomfortable and can also reduce fatigue of the occupants.

Claims (9)

A first bevel gear 50 fixed to the pedal shaft 10 and capable of connecting and transmitting the rolling force of the pedal 11; A cylindrical retainer 40 coupled to the first bevel gear 50 by a one-way drive transmission means 20 and capable of rotating only in one direction by a ratchet control means or a clutch control means; A bevel gear 60 formed to be rotatable at equal intervals on the cylindrical retainer 40 so as to be engaged with the first bevel gear 50; A third bevel gear (70) coupled to the pedal shaft (10) and the one-way drive transmission means (20) and simultaneously engaged with the second bevel gear (60) to enable driving and rotation; Combined with the third bevel gear 70 is a forward drive driving device of the bicycle, characterized in that consisting of a drive sprocket (80) connected to the rear wheel and the chain. The cylinder holder (40) is provided with a ratchet (41) on one side, so that it can be controlled by the ratchet control means (30), so that the pedal shaft (10) at forward rotation. Cylindrical retainer (40) is rotatable and forward driving device of the bicycle, characterized in that the fixed when the reverse rotation. 3. The ratchet control means (30) according to claim 1 or 2, wherein the ratchet control means (30) is elastically coupled to the ratchet (41) of the cylindrical holder (40) to control the driving of the cylindrical holder (40) in the reverse direction. A plurality of ratchet hooks 90 capable of being made; And a release ring body (100) capable of releasing engagement between the ratchet (41) and the ratchet hook (90) by a release lever (101). According to claim 3, The release ring body 100 has a release step 102 is formed at equal intervals on the circumferential surface, the ratchet of the cylindrical holder 40 is formed to be rotatable on the circumferential surface of the 41 A forward drive driving device for a bicycle. A first bevel gear 50 fixed to the lung shaft 10 to transfer the rolling force of the pedal 11; A cylindrical retainer 40 coupled to the first bevel gear 50 by a one-way drive transmission means 20 and capable of rotating only in one direction by a ratchet control means or a clutch control means; A second bevel gear (60) formed to be rotatable at equal intervals on the cylindrical retainer (40) so as to be engaged with the first bevel gear (50); A third bevel gear (70) coupled to the pedal shaft (10) and the one-way drive transmission means (20) and simultaneously engaged with the second bevel gear (60) to enable driving and rotation; In the forward drive driving device of the bicycle composed of a drive sprocket 80 is coupled to the third bevel gear 70 is connected to the rear wheel and the chain, the cylindrical retainer 40 by the engaging means 200 A forward drive driving device for bicycles, characterized in that it is formed to be able to rotate only in one direction. The apparatus of claim 5, wherein the cylindrical retainer (40) has ratchets (41) formed at equal intervals on its side wall circumferential surface. The method of claim 5 or 6, wherein the engaging means 200, the fixed latch wheel 210, which is horizontally elastically elastically movable, and the cylinder which is capable of engaging with the fixed latch wheel 210 correspondingly. Ratchet (41) and the ratchet ring body 220 of the retainer 40, the forward drive system for driving. 8. The ratchet ring body (220) according to claim 7, wherein the ratchet ring (220) is formed on one side of the ratchet ring (220) so that the ratchet of the cylindrical holder (40) is rotatably formed at the step of the outer circumference of the head (41). The ratchet of the fixed latch wheel 210, the ratchet of the cylindrical retainer (40) can be engaged with the ratchet (41), characterized in that the bicycle forward driving device. The ratchet teeth 221 of the ratchet ring body 220 have a tooth dimension larger than that of the ratchet teeth 41 of the cylindrical holder 40, and the fixed ratchet wheel ( When the ratchet 213 of 210 is engaged with the top of the ratchet 213, the ratchet 41 of the cylindrical holder 40 and the ratchet 213 of the fixed latch wheel 210 are released to release the cylinder. A driving device for driving a bicycle forward, characterized in that the sieve 40 is rotatable.