KR20150110079A - Infinitely variable power transmitter for motorcycles - Google Patents

Abstract

The present invention relates to an infinitely variable power transmission device for a motorcycle. The present invention comprises: a planetary gear carrier connected with an input shaft receiving an external driving force; a planetary gear belonging to the planetary gear carrier to be rotated while being orbited by the planetary gear carrier; a sun gear engaged with the planetary gear; a sun gear shaft fixated to the sun gear to be integrally rotated; a fluid resistant wing fixated to the sun gear shaft to be integrally rotated and receiving rotational resistance from a fluid during rotation to reduce the speed of the rotation of the sun gear; a ring gear engaged with the planetary gear; a ring gear housing fixated to the ring gear to be integrally rotated; a fluid resistance body fixated to a motorcycle body or enabling the ring gear housing to be fixated to the body to be integrally rotated and surrounding the fluid resistance wing having a distance from the fluid resistance wing and storing the fluid to generate the rotational resistance with the fluid when the fluid resistance wing is rotated; and the fluid stored inside the fluid resistance body and generating the rotational resistance when the rotation resistant wing is rotated.

Description

Technical Field [0001] The present invention relates to an infinitely variable power transmitter for motorcycles,

The present invention relates to an automatic infinitely variable transmission for a bike, and more particularly, to an automatic infinite variable power transmission apparatus for a bike, which can automatically shift without a shock of a speed change gear during a shift, smoothly starts without a rapid acceleration at the time of initial acceleration, The present invention relates to a power transmission apparatus for a bike capable of automatically shifting to an endless state at an appropriate speed change ratio in accordance with a standby state.

Generally, bikes are used in various ways such as a method using a speed reducer, a method using a wheel in motor, and a method using a continuously variable transmission (CVT).

The electric bike by the reducer is the motor direct drive system without the transmission, and the energy efficiency is remarkably lowered as well as the motor, and the driving performance is inevitably low because there is not proper shift. Also, since the initial torque is high due to the nature of the motor, there is a problem in that it causes a safety accident by generating a sudden start in response to a small operation of the accelerator by an increase in the initial acceleration force. To compensate for this, the initial torque can be lowered to the controller, but it is insufficient to prepare for an accident caused by a sudden start. Therefore, the electric bicycle by the speed reducer may cause a safety accident due to a large mistake on the market road, the alley road,

In the wheel-in-motor type, there is a motor in the wheel, the motor shaft is fixed and the wheel is attached to the rotating motor body to drive the wheel. Motor-driven electric motor bikes have a motor inside the wheel, so they can not be used for low output due to motor size limitation.

Generally, a manual bike manual transmission is provided with a gear shift lever and a clutch lever, respectively, so that the inconvenience of operating the gear shift lever after operating the clutch lever and the impact of the acceleration difference due to the gear shift occur, It tends to be somewhat difficult to drive for either women or the elderly.

In order to overcome the problem of such a manual transmission, there is a semi-automatic transmission including a clutch function in the gear shift lever, but also an acceleration shock occurs during shifting. Such an acceleration shock may also cause an accident due to a shock if the shift is not made at an appropriate time due to the gear shift.

An automatic transmission (continuously variable transmission) has been developed to solve the impact problem of the gear shifting, so that the driver can easily operate. There is no impact due to the shift due to the automatic infinite transmission, but the power transmission efficiency is remarkably low, This is a disadvantage. In addition, there is a disadvantage that belt wear is serious due to power transmission due to friction between the CVT belt and the pulleys, which often requires replacement.

1. Korean Patent Publication No. 10-2012-0067135

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide an automatic unlimited transmission power transmission apparatus for a bike capable of transmitting power without impact of a transmission gear.

Also, it is intended to provide an automatic infinite transmission power transmission device of a bike capable of shifting at a speed change ratio that enables the transmission to automatically operate in an optimum condition in consideration of road conditions, external environment, and safety.

In addition, the structure is designed to be simpler in structure than a manual transmission or a semi-automatic transmission or a CVT of a bike, so that it is possible to provide an automatic infinite transmission power transmission apparatus of a bike having a low product cost and high durability of products by simple structure.

Also, it is intended to provide an automatic infinite transmission power transmission device of an electric bike capable of smooth start or acceleration, in order to solve the problem that the electric bike is exposed to an accident caused by sudden start and stop by a rapid acceleration at the start of the electric bike.

In order to achieve the above object, according to the present invention, there is provided an automatic endless transmission power transmission apparatus for a bike, comprising: a planetary gear carrier connected to an input shaft for receiving an external driving force; A sun gear (30) which meshes with the planetary gear, a sun gear shaft (31) fixed to the planetary gear and integrally rotating, a sun gear shaft A ring gear housing (41) fixed to the ring gear and integrally rotating and outputting the ring gear housing (41), and a fluid resistance vane (32) And a fluid resistance body (42) fixed to the vehicle body or the ring gear housing.

In a preferred embodiment of the present invention, the fluid is an oil, an organic liquid, water, a water-soluble liquid or a fine powder.

As a preferred embodiment of the present invention, a bike wheel or a wheel is fixed to the ring gear housing on the output side so as to rotate integrally.

As a preferred embodiment of the present invention, the forward and reverse directions of the output are switched by forward and reverse switching of the electric motor.

In another embodiment of the present invention, the automatic endless transmission power transmitting apparatus of a bike includes a sun gear shaft 31 connected to an input shaft to which an external driving force is transmitted, a sun gear 30 fixed to the sun gear shaft and rotating integrally, A ring gear 40 meshing with the planetary gear, a planetary gear carrier 31 which restrains the planetary gear 30 meshing with the sun gear, a fluid resistance vane 32 fixed to the planetary gear carrier and pivoting integrally therewith, A ring gear housing 41 which is fixed to the ring gear and integrally rotates and outputs the ring gear housing and a fluid resistance body 42 which houses the fluid resistance vane and the fluid 50 and is fixed to the vehicle body or the ring gear housing .

As another embodiment of the present invention, a bike automatic limitless transmission system using the principle of a fluid clutch includes a pump shaft 61 connected to an input shaft to which an external driving force is transmitted, A turbine runner 63 that receives power from the pump impeller via the fluid 50 and has an output and is fixed to the housing / wheel 60 and delivers power to the wheels directly; And a housing (60) surrounding the turbine runner and the pump impeller while rotating integrally with the fluid (50) contained in the housing (60).

According to the present invention, there is no generation of gear impact due to the connection of the transmission at the time of shifting, so that it is easy to use and maintain quietness, and durability and reliability of the device can be improved.

The present invention is applied not only to an electric bike using the driving force of a motor but also to an internal combustion engine motorcycle or a bicycle by attraction force.

The present invention can be applied to the best transmission for electric bikes.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural diagram of a bike automatic infinitely variable transmission power transmission device according to the present invention; Fig.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bike automatic unlimited transmission power transmission device,
3 is a structural view of an embodiment in which the fluid resistant body according to the present invention is fixed to the ring gear housing instead of being fixed to the body.
FIG. 4 is a graph showing RPM and vehicle speed calculation of respective gears by an automatic limitless transmission system according to the present invention. FIG.
5 is a structural view of an embodiment in which a bike wheel / wheel is mounted directly to a ring gear housing having an output according to the invention;
Figure 6 is an overall perspective view of an embodiment in accordance with the present invention;
7 is an embodiment of a fluid resistance wing and sun gear and sun gear shaft according to the present invention.
8 is an embodiment in which the fluid resistance body and the wheel / wheel according to the present invention are integrated.
9 is an internal perspective view of an embodiment in which the fluid resistance body and the wheel /
10 is an exploded perspective view of the entire apparatus according to the present invention.
11 is a sectional view according to the present invention.
12 is a schematic diagram of another embodiment of receiving input as a sun gear;
13 is a structural view of another embodiment of securing the fluid resistant body to the ring gear housing;
14 is a structural view of a bike automatic infinitely variable transmission power train using the principle of a fluid clutch;

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular forms disclosed. And shall not interpret it.

1 is a structural view of an automatic limitless transmission system for a bike according to the present invention. The planetary gear carrier 21 is connected to an input shaft to which an external driving force 10 is transmitted. The planetary gear carrier 21, A planetary gear 20, a sun gear 30 meshing with the planetary gear, a sun gear shaft 31 fixed to the sun gear and integrally rotating, a fluid resistance blade 32 fixed to the sun gear shaft and pivoting integrally, A ring gear housing 41 which is fixed to the ring gear and integrally rotates while receiving the output of the ring gear and connected to the output shaft, a ring gear housing 41 fixed to the vehicle body and spaced apart from the fluid resistance vane by a predetermined distance, A fluid resistance body (42) having a constant wing to generate fluid resistance when the resistance wing rotates, a fluid resistance wing rotating in the fluid resistance body to generate fluid resistance It characterized in that it comprises a fluid 50 for Pointing.

In the present invention, a bike is defined as a generic name including a two-wheeled bicycle, a motorcycle, and a three-wheeled and four-wheeled motorcycle.

The external driving force 10 is a device for generating a rotational force such as a motor or an engine.

The planetary gear carrier 21 is connected to the planetary gear 20 by a carrier pin and receives an external driving force to rotate as the planetary gear rotates.

The planetary gears 20 are gears that are engaged with the sun gear and the ring gear and receive external driving force. The planetary gears 20 are composed of a plurality of pinion gears, and rotate and / or revolve around the sun gear. The number of the planetary gears is preferably three, but is not limited thereto and is arranged at equal intervals.

The planetary gear 20 is attached to a planetary gear carrier 21 connected to an input shaft to which an external driving force is transmitted and rotates while being engaged with the sun gear 30 and the ring gear 40, It rotates due to the engagement with the sun gear and the ring gear at the same time as the revolving motion.

The sun gear 30 meshes with the planetary gear 20 so that power is transmitted to the sun gear and the ring gear 40 in rotation of the planetary gear set including the planetary gear and the planetary gear carrier, The sun gear is rotated before rotation.

The sun gear shaft 31 is fixed to the sun gear 30 and is integrally rotated.

The fluid resistance vane 32 is fixed to the sun gear shaft and is integrally pivoted and has a plurality of blades out of the circumference which are parallel to or form an appropriate angle with the axis of rotation, And a hole or the like is formed in the rotary blade.

The ring gear 40 is a hollow cylindrical gear having a tooth row on its inner peripheral surface, Respectively. The ring gear housing 41 is an output element that is fixed to the ring gear and integrally rotates and is connected to the output shaft.

The fluid resistance body 42 is fixed to the bike body and is spaced apart from the fluid resistance wing and has wings for generating a fluid resistance in the circumferential direction.

The fluid 50 is contained in the fluid resistance body as liquid or fine powder so that when the fluid resistance wing rotates, the fluid imparts rotational resistance to the fluid resistance wing to reduce the amount of rotation of the fluid resistance wing. The fluid may be any of oils, organic liquids, water, water-soluble liquids or fine powder-degrading fluids.

The infinitely variable power transmission process of the bike according to the present invention is as follows. When the planetary gear carrier 21 is rotated directly from the external driving force 10, the planetary gear 20 attached to the planetary gear carrier is rotated together, and the ring gear 40 having the output rotates, So that the sun gear 30 rotates preferentially and the sun gear rotates the interlocked fluid resistance vane 32. [ The fluid resistance blade impinges on the fluid 50 contained in the fluid resistance body 42 to generate a rotational resistance to reduce the amount of rotation of the sun gear and to rotate the ring gear according to the reduced amount of rotation, And finally drives the wheels of the bike.

Since the vehicle body at the initial start is generated up to the accelerating resistance and the running resistance is large, the vehicle body can run when the rotational resistance applied to the fluid resistance wing is larger than the running resistance. If the rotational resistance of the fluid resistance wing is larger than the running resistance, the vehicle body can not start because the rotational resistance of the fluid resistance wing is initially low, It starts smoothly and travels.

2 is a view for expressing the rotational direction and the amount of rotation between the gears in the idling state and the running state of the automatic endless transmission power transmission apparatus of the bike according to the present invention.

The rotation angle R? Of the ring gear, the rotation angle P? Of the planetary gear carrier, and the rotation angle S? Of the sun gear are calculated by the following Equation 1.

Here, A is a value obtained by dividing the number of teeth Rz of the ring gear by the number of teeth Sz of the sun gear as a gear ratio, a clockwise direction is +? Or? And a counterclockwise direction is-? The rotation angle of the sun gear which is reduced in rotation amount is expressed as S'θ and the changed rotation angle of the ring gear is defined as R'θ due to S'θ of the sun gear.

The planetary gear carrier 21 and the planetary gear 20 from the input shaft simultaneously have the same amount of rotation P ?. Since the ring gear 40 has an output, a running resistance is applied and the sun gear 30 rotates freely (S?) Instead of stopping (R?) At the beginning. When the RPM of the planet gear carrier is high, the sun gear is no longer in free rotation but in reduced rotation (S'θ) due to the rotational resistance of the fluid resistance wing, which causes the ring gear to rotate in the same direction (R'θ) And the output shaft is in a running state. Table 1 summarizes these.

The number of teeth Sz of the sun gear 30 is set to 18, the number of teeth Pz of the planetary gear 20 is set to 24, and the number of teeth Rz of the ring gear 40 is set to 66, When the angle Pθ is set to 360 ° in the clockwise direction, a rotational resistance is generated in the fluid resistance blade due to the rotation angle Sθ of the sun gear in the idling state (Rθ = stop) at 1680 ° free rotation. However, Resistance value. The RPM of the planet gear carrier is increased to increase the rotational resistance of the fluid resistance wing. The rotation amount of the sun gear is reduced, and the ring gear rotation angle R'θ and the gear ratio with the rotation angle S'θ and the output are shown in Table 2.

As shown in Table 2, the transmission gear ratio can start from the infinite idling state to the same rotation ratio (1: 1), but the gear ratio can be up to 1: 1 due to the shift characteristic due to the fluid resistance. Analysis of the tendency of the transmission gear ratio by a graph shows that it has a two-dimensional gear ratio.

In the case of a high road resistance due to a severe road with a ramp, wind or humidity, etc., the gear ratio has a high gear ratio by itself, and on a relatively downhill road, it has a low gear ratio. It is a self-infinitely variable transmission of the bike that you have.

FIG. 3 is a structural view of a bike automatic infinitely variable transmission with a fluid resistance body fixed to a ring gear housing without fixing the fluid resistance body of FIG. 1 to a vehicle body. Since the fluid resistance body is not fixed to a vehicle body, space utilization can be maximized, Resistance friction causes the fluid resistance body to apply a force to the output shaft, such as a fluid resistance wing, to improve the output.

4 is a graph expressing the RPM of each gear and the speed curve of the vehicle by the automatic limitless transmission system of the present invention. The rotational angle (R?) Of the planetary gear carrier is a linear first order function, and the rotational angle (S?) Of the sun gear acts as a fluid resistance, resulting in a quadratic function of the curve. And the speed of the vehicle also has a quadratic function characteristic.

As can be seen from the speed graph in FIG. 4, since the vehicle speed is gradually increased at a low RPM of external power, it is possible to smoothly start the motor from overtorque at the initial start, It is very easy to cope with accidents caused by sudden outbreak. In addition, at a high RPM, a low gear ratio is achieved due to the influence of the vehicle's acceleration force and the running resistance, so that the vehicle can travel at a high speed. In other words, high gear ratios increase the driving torque at low speeds, and low gear ratios increase the speed of the vehicle at high speeds. In the case of electric bikes, the optimum motor and battery capacity can satisfy the high driving performance. Since it starts smoothly, high stability can be secured.

FIG. 5 is a structural view of an automatic limitless transmission of a bike according to another embodiment of the present invention, in which a wheel or a wheel of a bike is mounted directly on a ring gear or a ring gear housing having an output. The means for transmitting the external driving force 11 uses a motor gear or a chain sprocket or a belt pulley 11 and the means 22 for receiving the planetary gear carrier is an input gear or a chain sprocket or a belt pulley 22, The connecting means 12 is an idle gear or chain or belt. This structure maximizes the efficiency of space utilization by installing and fixing the bike automatic infinite transmission power transmission device in the bike wheel. Further, since the wheels are mounted directly on the ring gear housing having the output, a power transmission device for transmitting the final output is unnecessary, and the transmission efficiency is high, and the structure is very simple and the production cost can be reduced. In addition, in terms of space utilization, it is possible to arrange the motor or the engine, which is an external driving force, in an optimum condition in a space which is parallel to the input shaft of the power transmission device and spaced apart.

Fig. 6 is an overall perspective view of the automatic infinitely variable transmission shown in Fig. 5, which includes a motor as one of external driving force elements, a wheel as a final output element, an automatic infinite transmission power transmission device built in a wheel, An apparatus and a housing for delivering to an infinitely variable transmission.

7 shows an embodiment of the fluid resistance blade 32, the sun gear 30 and the sun gear shaft 31 as an embodiment of the present invention, in which a plurality of blades parallel to the rotational axis constantly on the outer circumference of the fluid resistance blade Are installed at intervals.

Fig. 8 shows a ring gear 40, a fluid resistance body 42, wheels / wheels, and tires as an example of implementing the invention of Fig. A wing for generating fluid resistance is uniformly formed in the inner circumference of the fluid resistance body (42), and the fluid resistance body and the wheel / wheel are integrally or fixed.

Fig. 9 is an internal perspective view showing the invention of Fig. 5, which includes a motor 10 as one of external driving force elements, a motor pulley 11 as one of elements for transmitting power of the motor, a planetary gear carrier pulley 22, The planetary gear carrier 21 and the planetary gear 20 are shown. Fig. 10 is an exploded perspective view of the whole, and Fig. 11 is a sectional view.

As another embodiment of the present invention, Fig. 12 is a structural view of an automatic infinitely variable transmission including a sun gear in place of a planetary gear carrier in Fig. 1, and has a large rotational resistance due to fluid resistance and a high torque.

As another embodiment of the present invention, Fig. 13 is a structural view of an automatic limitless transmission system in which the fluid resistance body of Fig. 12 is fixed to the ring gear housing without being fixed to the vehicle body.

As another embodiment of the present invention, Fig. 14 is a bike automatic infinite variable power transmission apparatus using the principle of a fluid clutch. A bike wheel / wheel is mounted directly on the turbine runner 63 having an output and a pump shaft 61 receiving an external driving force rotates the pump impeller 62 to transmit power to the turbine runner through the fluid 50 do.

If the external driving force RPM is low, the pump impeller is a turbine runner and the power transmission efficiency is low, so that a smooth start is possible, and when the external driving force RPM is gradually increased, the power transmission efficiency is increased and the output is high. In addition, the power transmission device is built in the wheel, and it is possible to utilize the optimum space, and it is composed of the pump impeller and the turbine runner. Therefore, it is excellent in cost competitiveness and durability by simple structure.

The power transmission efficiency between the pump impeller and the turbine runner has an output suitable for running according to the running resistance of the vehicle body relative to the external driving force. If the driving resistance is high, the deceleration rate is increased and the output is high. If the acceleration is increased, the power transmission efficiency can be increased to 100%.

10: Motor or engine
11: Motor gear or chain sprocket or belt pulley
12: Idle gear or chain or belt
20: planetary gear 21: planetary gear carrier
22: Input gear or chain sprocket or belt pulley
30: sun gear 31: sun gear sharp 32: fluid resistance blade
40: ring gear 41: ring gear housing 42: fluid resistant body
50: fluid
60: housing 61: pump shaft 62: pump impeller
63: Turbine runner

Claims (7)

A planetary gear carrier (21) connected to an input shaft for receiving an external driving force;
A planetary gear (20) that is attached to the planetary gear carrier and rotates together with idle rotation due to the rotation of the planetary gear carrier;
A sun gear (30) meshing with the planetary gear;
A sun gear shaft (31) fixed to the planetary gear and integrally rotating;
A fluid resistance blade (32) fixed to the sun gear shaft and rotating integrally;
A ring gear 40 meshing with the planetary gear;
A ring gear housing 41 which is fixed to the ring gear and integrally rotates and outputs the ring gear;
And a fluid resistance body (42) that houses the fluid resistance wing and fluid (50) and is fixed to the vehicle body or the ring gear housing. The method according to claim 1,
Wherein the fluid is an oil, an organic liquid, water, a water-soluble liquid or a fine powder. The method according to claim 1,
And the bike wheel or the wheel is fixed to the ring gear housing on the output side so as to rotate integrally. The method according to claim 1,
Wherein the forward and reverse directions of the output are switched by forward and reverse switching of the electric motor. A sun gear shaft (31) connected to an input shaft to which an external driving force is transmitted;
A sun gear 30 fixed to the sun gear shaft and rotating integrally;
A planetary gear (30) meshing with the sun gear and a planetary gear carrier (31) restricting the planetary gear (30);
A fluid resistance blade (32) fixed to the planetary gear carrier and rotating integrally;
A ring gear 40 meshing with the planetary gear;
A ring gear housing 41 which is fixed to the ring gear and integrally rotates and outputs the ring gear;
And a fluid resistance body (42) that houses the fluid resistance wing and fluid (50) and is fixed to the vehicle body or the ring gear housing. 6. The method of claim 5,
And the bike wheel or the wheel is fixed to the ring gear housing on the output side so as to rotate integrally.

A pump shaft 61 connected to an input shaft to receive an external driving force;
A pump impeller (62) fixed to the pump shaft and rotating integrally;
A turbine runner 63 receiving power from the pump impeller through the fluid 50 and having an output and being fixed to the housing / wheel 60 and delivering power to the wheels directly;
A wheel and a housing enclosing the turbine runner and the pump impeller while fixedly and integrally rotating with the turbine runner; And
And a fluid (50) contained in the housing (60).

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