KR101015263B1 - Driving apparatus for high torque motor engine - Google Patents

Abstract

PURPOSE: A driving apparatus is provided to ensure the improved efficiency of a motor engine because the motor engine is installed outside a wheel hub and a planetary reducer having a high reduction ratio is arranged between the driving shaft and driving gear of a motor. CONSTITUTION: A driving apparatus comprises a motor(M) and a driven shaft(S2). The motor comprises a driving shaft(S1) equipped with a driving gear(G1). The driven shaft comprises a driven gear(G2) forming a gear pair with intersection axes by engaging with the driving gear of the motor. The motor also includes a heat radiating unit(H) which is composed of an air cooling part(40) formed of an air passage inside the motor. The air passage successively passes through an air intake part(43) and the inside of the motor and is connected to an air discharge part(45).

Description

DRIVING APPARATUS FOR HIGH TORQUE MOTOR ENGINE}

The present invention relates to a high power drive device in which a motor engine is introduced outside the wheel hub.

More specifically, in case of a conventional scooter, a large diameter BLDC motor is installed on the rear wheel hub to take a direct drive method, so that the torque is increased to increase the diameter and the weight is heavy. This was

In order to solve this problem, the present invention arranges the motor engine outside the wheel hub and transmits power through various cross-axis gears, and introduces a reducer having a large reduction ratio at the output of the drive shaft, thereby increasing the driving torque by the reduction ratio. The efficiency of the motor can be improved, the weight can be reduced, and the low power consumption can be provided, thereby providing a high-power drive device suitable for two-wheelers such as scooters, three-wheelers and four-wheelers.

Bokyung Industrial Co., Ltd. Patent No. 0934400 (December 21, 2009) [Electric Drive Assembly for Motorcycle] includes two-wheeled vehicles such as scooters, motorcycles and motorcycles, especially two-wheeled vehicles that drive rear wheels by gasoline engine and hybrid drive system It proposes a technology suitable for use in the field of manufacturing two-wheeled vehicle, and basically adopts an electric motor to the rear wheel hub.

This concept is the same as in the case of Kyung Jin Hwa Patent No. 0953745 (April 12, 2010) [Hybrid Motor Scooter].

As such, the motor engine of the driving device for the conventional electric scooter is mainly arranged on a wheel, in particular a rear wheel hub.

More specifically, a driving apparatus using a conventional motor engine is a method in which a low speed BLDC motor (typically 400-600 rpm) driven by a storage battery is installed in a front wheel or a rear wheel to directly return a wheel.

Since the speed limit of the driving body is limited, the low speed BLDC motor with large body diameter is mainly used.

However, in the case of a drive body that requires a large driving torque, the size of the motor is increased to increase the output of the low-speed BLDC motor and the weight of the motor becomes heavier in proportion to the manufacturing cost, and the power consumption is increased.

In addition, since the wheel hub is heavily loaded, wear of wheel hub parts (bearings, etc.) increases, and driving stability of the vehicle body cannot be guaranteed at high speeds.

Therefore, the present invention uses a high-speed BLDC (3000rpm or more), which is longer than the diameter, and basically introduces a motor engine outside the wheel hub to provide a high-power drive device suitable for two-wheelers and four-wheelers, including two-wheelers such as scooters. It aims to provide.

In addition, the present invention can be arranged between the output end of the drive shaft, in particular the drive shaft and the drive gear of the motor to increase the drive torque of the wheel by the reduction ratio by arranging a reduction gear such as a planetary reducer with a large reduction ratio, so that the efficiency of the motor engine is reduced and the weight is reduced. It is also an object of the present invention to provide a high power drive device that can reduce power consumption.

Furthermore, the present invention introduces a one-way clutch to the drive gear or the drive shaft such that the reverse rotation of the motor is not transmitted to the wheel, thereby ensuring high driver safety in case of emergency such as abnormal reverse rotation of the motor. It is an object to provide a device.

In addition, the present invention introduces a heat radiating means to the motor, unlike the fuel engine, due to the characteristics of the BLDC motor of the electric motor engine with a large output, due to the heat generation in the low-speed section that requires a lot of torque, such as when driving the slope rather than high speed due to overheating of the engine It is an object of the present invention to provide a driving device capable of preventing various problems such as rapid deterioration of engine performance.

In addition, the present invention relates to the drive gear provided on the drive shaft and the longitudinal gear provided on the driven shaft of the wheel hub, in particular, the drive gear is composed of a disk combination gear and the driven gear is composed of a roller gear friction in the process of transmitting power And it is an object of the present invention to provide a drive device that eliminates the noise or power loss problem, and above all, to provide a low cost disk combination gear to reduce the production cost.

In addition, the present invention is a case where the roller forming the driven gear is inclined at a predetermined angle with respect to the axis by varying the size of each disc in the disc combination gear

Install each one for the big radius and the small radius and insert the spacer between the two discs.

Furthermore, by changing only the intermediate spacer length according to the change of the tooth angle, stable engagement between the roller gear and the disc combination gear is easily realized.

If necessary, some or all of the disks may be bent by the gear region,

First of all, since the disk is processed by press, the production speed is high and the processing cost is low.

On the other hand, an object of the present invention is to provide a drive device having a drive shaft locking means that is locked or unlocked by manual or automatic (wireless signal control), for example by installing a lock on the drive shaft.

In addition, the present invention is the locking means is in the locked position by the spring force, for example, when there is no electrical signal, the magnetized by the solenoid coil when the electrical signal comes in to operate the locker does not interfere with the locking projection of the drive shaft It is an object of the present invention to provide a drive device having a drive shaft locking means which is moved to a position and is released.

Furthermore, the present invention is to prevent the situation that the locker can not be performed when there is only one locker and the locking projection of the driven shaft descends to contact the locker.

Since the lockers of the locking means are spaced apart from each other by two, the object of the present invention is to provide a driving device having a driven shaft locking means so that one locker can be moved to the locked position regardless of the position of the locking projection of the driven shaft. do.

In order to achieve the above object, the driving device that introduces a motor engine on the outside of the wheel hub according to the present invention

A motor including a drive shaft having a drive gear;

A wheel including a hub having a driven shaft having a driven gear that meshes with a drive gear of the motor to form a cross-axis gear;

It is made, including.

In addition, in the drive device according to the present invention

The reducer is interposed between the drive shaft and the drive gear of the motor,

The drive gear or the drive shaft is provided with a one-way clutch so that the reverse rotation of the motor is not transmitted to the wheel,

Preferably, the motor is further provided with a heat radiating means.

In addition, in the driving device according to the present invention

When the drive gear or driven gear is composed of a disk combination gear, the combination gear is

A plurality of disks having repetitive teeth formed on an edge thereof;

Spacers for spaced fixing of the disks; And

A drive shaft is coupled to each of the disk and the spacer.

In addition, the disk combination gear according to the invention the disk is different in size,

It is preferable that some or all of the disks have bent teeth.

Furthermore, the drive device according to the present invention preferably introduces a locking means to the drive shaft, in which case the locking means

A drive shaft having a locking projection; And

A locking means including a locker that contacts with the locking projections to prevent rotation of the driving shaft when moving forward;

It is made, including.

In addition, in the drive shaft locking means according to the present invention

The locking projection of the drive shaft is one, the lockers of the locking means are spaced apart from each other,

The locking means includes a case and a solenoid provided in the case to advance and retract the locker,

The locker is supported by a spring, it is preferably located in the locked state or released state when the power is not applied.

As described above, the driving device incorporating the motor engine outside the wheel hub according to the present invention has a length longer than a diameter, for example, uses a medium speed BLDC (more than 3000 rpm) and basically introduces the motor engine to the outside of the wheel hub so that the scooter Suitable for three-wheeled and four-wheeled vehicles, such as two-wheeled vehicle, and reducer, such as reduction gears, planetary gearheads with a large reduction gear ratio between the output shaft of the drive shaft, in particular between the drive shaft and the drive gear of the motor to increase the driving torque of the wheel by the reduction gear ratio. It can improve the efficiency of the motor engine, reduce the weight and reduce the power consumption, and furthermore, by introducing a one-way clutch in the drive gear or the drive shaft so that the reverse rotation of the motor is not transmitted to the wheel, such as abnormal reverse rotation of the motor In case of emergency, the driver and the occupant can secure the safety and heat dissipation means on the motor Unlike the fuel engine, the BLDC motor of the large-power electric motor engine generates a lot of heat in the low speed section that requires a lot of torque, such as when driving on a slope, rather than at high speed. It can be prevented and, in addition to the drive gear provided on the drive shaft and the driven gear provided on the driven shaft of the wheel hub, in particular, the drive gear is composed of a disc combination gear and the driven gear is constituted by a roller gear. In the process of transmission, friction and noise generation or power loss problems can be eliminated, and above all, the production cost can be reduced by providing a disk assembly gear with a low processing cost, and the disc gears can be driven by varying the size of each disk. Large turning radius and small turning when the rollers that make up are inclined at an angle to the axis It is installed according to the total diameter, and the spacer is sandwiched between the two disks, and only the intermediate spacer length is changed according to the change of the tooth angle, so that the stable engagement between the roller gear and the disk combination gear is easily realized. As a result, some or all of the disks may be bent at the gears, and above all, the disks are processed by press, so the production speed is high and the processing cost is low, so it is suitable for mass production. Or a drive shaft locking means which is automatically locked or unlocked (wireless signal control), and the locking means is in a locked position by a spring force, for example, when there is no electric signal, and when the electric signal comes in the solenoid Magnetized by the coil to operate the locker so that the locker The locker of the locking means is moved to a position where it does not interfere and is released. Furthermore, when the locker is one and the locking projection of the driven shaft descends to come into contact with the locker, the locker of the locking means is prevented to prevent a situation in which the locking function cannot be performed. Since they are spaced apart from each other, one locker can provide a driven shaft locking means so that one locker can be moved to the locked position no matter where the locking projection of the driven shaft is located.

As a result, the motor engine is placed outside the wheel hub, power is transmitted through various cross-axis gears, and the drive torque can be increased by the reduction ratio by introducing a reducer with a large reduction ratio at the output of the drive shaft, thereby improving motor efficiency. It is also possible to reduce the weight and implement low power consumption. In case of the existing scooter, a large diameter BLDC motor is installed in the rear wheel hub to take the direct drive method.In order to increase the torque, the diameter is increased and the weight is heavy, resulting in low output efficiency and large power consumption. It can solve the problems caused by the increase of production cost and operation cost.

1 is a schematic plan sectional view of a driving device incorporating a motor engine on the outside of a wheel hub according to the present invention;
Figure 2 is a part view and an assembly view associated with the disk combination gear constituting the drive gear of the drive apparatus according to the present invention.
Figure 3 is a schematic diagram of a drive device using a disc combination gear according to the present invention.
4 is a schematic view of various variants of a disc combination gear according to the invention.
5 is a main view of a drive device having a drive shaft locking means according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

The present invention may be modified in various ways and may have various forms, and thus embodiments (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific form disclosed, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the same digits, tens, ones, and alphabets refer to members having the same or similar functions, and unless otherwise specified, each member in the figures The member referred to by the reference numeral may be regarded as a member conforming to these criteria.

In addition, the components in each of the drawings to express the size or thickness exaggerated large (or thick) small (or thin) or simplified in consideration of the convenience of understanding, but the protection scope of the present invention is limited by this Should not be.

The terminology used herein is for the purpose of describing particular embodiments (suns, aspects, and embodiments) (or embodiments) only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms “comprises” or “consists” are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, but one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In the present specification, the first to second and the second to refer to different components are not limited to the order of manufacture, and their names are used in the detailed description and claims of the present invention. May not match.

2 to 4 related to the disk combination gear in the driving device A according to the present invention in the following description,

1 (see left enlarged in-circuit variant) and 5 associated with a drive device having drive shaft locking means; and

The concept of FIG. 1 of the driving device is not related to each other, and may be combined and implemented in various forms.

First, as shown in FIG. 1, a driving device A in which a motor engine is introduced outside the wheel hub according to the present invention includes a motor M including a driving shaft S1 having a driving gear G1. And a wheel (W) comprising a hub (W1) having a driven shaft (S2) with a driven gear (G2) that meshes with a drive gear of the motor to form a cross-axis gear.

The motor (M) is provided with a stator (Ms) and a rotor (Mr) in the motor housing (Mh), the drive shaft (S1) is supported on both ends by a bearing (B) on the coaxial.

The motor (M) for the electric engine configuration preferably uses a medium-speed BLDC (more than 3000rpm)

It is typically arranged outside the hub W1 of the wheel W with tires, and is suitable for tricycles and four-wheelers, as well as two-wheelers such as scooters.

In FIG. 1, the drive gear G1 provided at the output end of the drive shaft S1 together with the driven gear G2 provided at the input end of the driven shaft S2 of the wheel W forms a cross-axis gear, and a bevel gear. Shown in form,

The drive and driven gears G1 and G2 are wrapped together by a gear housing Gh.

In this case, the high-speed BLDC motor (M) in this case is higher efficiency than the low speed motor and can increase the torque of the output stage in proportion to the reduction ratio, resulting in a smaller motor size, reduced weight, and less drive current.

In addition, since the motor engine can be installed parallel to the body frame outside the wheel hub, that is, the fuel engine, it is easy to install and the stability of the vehicle body can be secured at high speed due to the distribution load on the vehicle body.

Next, the motor M is preferably provided with a heat radiating means (H).

This is compared with the conventional gasoline or diesel engine driven fuel, which is cooled by natural air cooling and forced water cooling in order to prevent the temperature rise of the engine during continuous operation.

In the case of BLDC motor engine, the heat generation of motor is the lowest at rated speed as opposed to fuel engine. When high torque is required at low speed, the heat generation from motor is increased and natural cooling by running speed is insufficient.

For example, it is intended to solve the problem that many problems such as rapid deterioration of engine performance due to overheating of the engine due to a large amount of heat generated in a low speed section requiring a lot of torque, such as when driving on a slope.

Specifically, the present invention is configured to naturally cool by forming a plurality of heat radiation fins H1 in the housing Mh of the motor M as the heat radiation means H.

In addition, the heat dissipation means (H) may include an air cooling unit 40 formed by installing an air passage in the secondary of the motor (M).

The air cooling unit 40 detects this when the temperature of the motor (M) engine rises, and if the detected temperature exceeds the reference value, the cooling fan 41 installed inside or outside the motor (M). By driving the forced cooling in parallel to increase the cooling efficiency, the air introduced by the fan 41 passes through the inside of the motor (M) through the intake portion 43, and then exhaust the exhaust portion 45 Is discharged through.

Furthermore, the drive device A according to the present invention arranges a gear reducer, in particular a planetary gearbox having a large reduction ratio, between the output end of the drive shaft S1, in particular, the drive shaft S1 of the motor M and the drive gear G1, and the wheel W. The driving torque of) can be increased by the reduction ratio, so that the efficiency of the motor engine can be improved, the weight can be reduced, and the power consumption can be reduced.

In addition, the driving device (A) according to the present invention introduces a one-way clutch so that the reverse rotation of the motor (M) is not transmitted to the wheel (W) through the drive gear (G1) or the drive shaft (S1). In case of emergency such as abnormal reverse rotation, the driver and passengers can be secured.

Looking at such a reducer and clutch in more detail as follows.

As shown in a variant in the upper right enlarged circle of FIG. 1, the drive device A according to the invention is

In the basic configuration, the shaft housing (Sh) and the central drive shaft (S1) built in the state with the bearing (B) interposed therebetween,

As an example of the drive gear at one end thereof, the roller gear assembly GR is shown, unlike the general bevel gear in the lower part of FIG. 1.

1, the roller gear assembly GR corresponding to the modification of the drive gear G1 in the modification in the upper right enlarged circle has the same basic configuration as the roller gear assembly corresponding to the modification of the driven gear in FIG. The same reference numerals are used (Arabic numerals, etc.).

In the upper right enlarged circle of FIG. 1, the roller gear assembly GR constituting the drive gear G1 is a plurality of which is fixed through the shaft pin 25a between the disc shaped first and second supports 21, 23. It consists of a roller 25.

On the other hand, the motor (M) constituting the core of the driving device (A) according to the present invention is made of a rotor (Mr) and stator (Ms) like a conventional motor, the rotation of the rotor is made when the power is applied.

The rotor (Mr) surrounds the drive shaft (S1), the bearing (B) is interposed between the two in order to prevent the drive shaft from interworking with the rotor.

Next, when the motor (M) is operated, the power of the rotor (Mr) is transmitted to the drive gear, that is, the roller gear assembly,

A one-way clutch was introduced such that reverse rotation due to abnormal operation of the motor M is not transmitted to the wheel W through the drive shaft S1.

In order to prevent the rotational force of the rotor from being transmitted to the drive shaft S1 or the drive gear G1 during the abnormal operation of the motor M, a first clutch, in particular, a first provided between the drive gear G1 and the drive shaft S1. With clutch C1,

In particular, the abnormal reverse rotation of the motor (M) is not transmitted to the wheel to ensure the safety of the driver and the occupant in an emergency situation.

Furthermore, the second clutch C2 may be further introduced to operate when the power is transmitted only when the power is applied to operate the driving gear G1.

Such first and second clutches can be implemented by appropriately modifying various known manual or automatic and mechanical or electronic clutches,

The introduction position can be variously modified as necessary.

In addition, looking at the reducer, particularly the planetary reducer applied to the drive device according to the present invention with reference to the upper right circle of Figure 1,

Since the power of the rotor (Mr) is transmitted to the drive gear (G1) via the reduction gear (R),

It can deliver high power even at low revolutions, resulting in higher motor efficiency, lower power consumption, smaller volume, better economy and better performance than the same motor engine.

It is possible to implement an optimal drive device.

The planetary reducer includes a rotating body (R1) that receives the rotational force of the drive shaft (S1) for the first time,

When the planetary unit U is provided in plural, the rotating body R1 corresponds to the first rotating body.

The connection of the drive shaft (or rotor) and the rotating body may be connected by various fastening means, and in some cases may be manufactured in one piece.

Planetary gear unit (U) is composed of a sun gear (Us), a planetary gear (Up), and a ring gear (Ur), it is shown in the form provided with two sets in the figure.

The sun gear Us is formed on the input side of the rotating body in which the planetary gear Up of the next planetary unit U is fixed by the shaft pin Up1.

Rotating body is provided with three, first to third rotating body (R1) (R2) (R3) in the drawing,

Among them, the second and third rotating bodies R2 and R3 form the planetary unit U.

The planetary gear (Up) of each planetary unit (U) may be provided with three or four usually,

The third rotating body R3 (or a rotating body after the fourth when three or more planetary units are introduced) is connected to the driving gear G1 through the second clutch C2.

The drive gear G1 is a block 20 for the first and second supports 21, 23.

(In consideration of forming a bundle by being integrated or assembled (welding, etc.))

It is connected or disconnected through the first clutch C1 at the connecting portion 20a.

Due to the precise meshing of the ring gear Ur and the planetary gear Up and the planetary gear Up and the sun gear Us connected to the celebratory housing Sh

Each of the rotating bodies R1, R2, and R3 can maintain a constant distance from the central driven shaft S2, thereby preventing friction.

Each planetary gear (Up) of the planetary unit (U) forming the reduction gear (R),

The third rotating body R3, the first and second clutches C1 and C2, and the driven gear G2b block 20 are

It is enclosed by the first and second housings H1 and H2, which are interconnected, respectively, to facilitate assembly and maintenance.

A ring gear Ur is formed on an inner surface of the first housing H1, and the first housing H1 is connected to the celebration housing Sh.

Next, the present invention proposes a disc gear which can be utilized as a drive gear or a driven gear as necessary and can replace a conventional general sprocket or bevel gear.

Such a disk combination gear is preferably used to form a cross-axis gear with the roller gear (GR) as shown in FIG.

In case of transmitting power by using conventional roller gear and scrocket

According to the radius of curvature of the roller with a certain angle

In order to make surface contact, the sprocket tooth shape should form a special three-dimensional tooth surface.

As the angle of contact changed, the interpretation of the contact surface became very complicated,

In addition, in order to process such a three-dimensional tooth surface modeling process with a high-performance processing equipment, such as 5-axis processing machine, it takes a lot of processing time, processing cost is expensive and mass production is bound to fall.

On the contrary, in the case of utilizing the disc combination gear according to the present invention, a single gear is formed by combining a plurality of discs having repetitive teeth on the rim and spacers having various thicknesses.

Smooth contact with the rollers of the roller gear assembly eliminates friction, noise and power loss, and above all, lower processing costs.

First, as shown in FIG. 2, one gear G1 is configured by combining a plurality of disks.

Each disc has a repetitive tooth on its rim.

The gap between each disc is maintained by the spacer 15 shown in [C].

[A] in FIG. 2 is a relatively large first disk 11, and [B] is a relatively small second disk 13,

Tooth edges 11a and 13a are formed on the edges, and the toothed portions are bent to form bent portions 11b.

For coupling with the drive shaft S1 (see FIG. 3), hollows 11c and 13c in which idle stops 11d and 13d serving as key grooves are formed are formed.

 The spacer 15 shown in [C] is a hollow 15a and an idle prevention portion 15b corresponding to the hollows 11c and 13c and the idle prevention portions 11d and 13d of the discs 11 and 13, respectively. ) Is formed.

One driving gear G1 formed of a combination of a plurality of disks and spacers can be seen in FIG. In addition, if the concept of the idle prevention unit is expanded, various 'idle prevention means' such as screw fixing and welding fixing method may be introduced.

When the disk combination gear G1 according to the present invention is applied to the driving device A, it is engaged with the driven gear GR or G2 so as to be mounted on the driving shaft S1 so as to transmit the power of the motor to the wheel W.

Here, the term 'second' gear is a relative term for the disk combination gear, and the disk combination gear may be referred to as a 'first' gear.

The roller gear assembly GR constituting the driven gear in FIG. 3 is illustrated in more detail in the enlarged circle on the right side of FIG. 1, which may be described accordingly.

It consists of a plurality of rollers 25 fixed through the shaft pin (25a) between the disk-shaped first and second support 21, 23 in the right enlarged circle of FIG.

As can be seen in Figure 4, such a disk combination gear (GC) is provided at one end of the drive shaft (S1), as shown in Figure 3 smoothly with the roller 25 of the roller gear assembly reel (GR) which is a kind of driven gear It can be contacted easily, so that there is no problem of friction, noise or power loss, and above all, the processing cost is low, which can greatly contribute to solving the ground problem in the field of the chainless bicycle.

Furthermore, the disks 11 and 13 may have different sizes.

When the roller 25 constituting the roller gear assembly is inclined at an angle with respect to the axis

It can be installed for each large radius of rotation and small radius of rotation, and the spacers 15 can be inserted and fixed between the two disks 11 and 13.

Furthermore, by changing only the intermediate spacer length (or thickness) according to the change of the tooth angle, stable engagement of the roller gear GR and the disc combination gear G1 can be easily realized.

This function can also be enhanced by changing the bending angle of the bend portion 11b of the gear 11a.

The utilization of the disk combination gear GC and the roller gear assembly GR may be modified and applied to the driving gear or the driven gear as necessary.

Figure 4 shows a variant of the various disk combination gear,

[A] is a form with a relatively short (or thin) spacer, [B] is a form with a relatively long (or thick) spacer ([A] and [B] are both small-diameter discs with bends Therefore, the combined gear forms a kind of similar crown gear),

[C] is an example in which one disc is composed of three discs combined.

[D] shows that the large diameter disc has a bend and the small diameter disc has no bend,

In [E], both large and small discs have no bends.

Next, a description will be given of a drive having a drive shaft locking means according to the modification shown in the left circle of FIG. 1 and the present invention shown in FIG. 5.

The concept of the locking means (L) can be used in various ways for locking a two-wheeled vehicle, such as a motorcycle or other power transmission drive shaft or driven shaft.

Drive shaft locking means (L) according to the invention is coupled to the celebrity housing (Sh) surrounding the drive shaft (S1),

By applying a lock using a common key or a known wireless signal lock that is used as a car or an expensive bicycle lock,

It includes a locker which is moved back and forth by manual operation by a key or automatic operation by an electronic key.

The locker is in contact with the engaging projection 20P (see Fig. 5E) formed in the corresponding portion of the drive shaft (S1) to prevent the rotation of the drive shaft (S1).

In Figure 1, the locking means (L) is shown in the form utilizing the solenoid 33 built in the case 37, the wireless receiving unit (or wired receiving unit, if necessary) to energize by applying an operation signal to the solenoid is omitted have.

The case 37 incorporates each component constituting the electronic locking means L, and the locking means is mounted to the celebration housing Sh through the case.

The solenoid 33 embedded in the case 37 becomes a magnetic material when power is applied by a wireless (or wired) signal (remote control by a remote controller will be common).

The magnetic force of this solenoid actuates the spool 35,

The spool operates in a direction opposite to the elasticity of the spring (conical spring in the figure) 33b in operation to advance and lock the locker 31.

In addition, the solenoid 33, the spool 35, and the spring 33B in the case 37 can be kept fixed in place by the cap 33a at the bottom thereof.

The configuration shown in the left circle of FIG. 1 schematically shows that when the solenoid 33 is not operated in the locking means L, the locker 31 is advanced by the elasticity of the spring 33b to constantly move the driving shaft S1. Although shown in contact with the locking projection (20P) to stay in the locked state,

On the contrary, the elasticity of the spring may be configured such that the locker retracts and is always unlocked when the solenoid is not operated.

In addition, the locking protrusion 20P formed at the corresponding position of the shaft 20 corresponds to the non-contiguous portion of the annular groove 20p, rather than protruding beyond the outer diameter of the portion of the other driving shaft.

(See side view in [E] of FIG. 5 and cross-sectional view taken along line “A-A '”),

If necessary, it may be deformed to protrude to the outer surface of the drive shaft.

In addition, as shown in [A] to [D] of FIG. 5, the locking projection 20P of the driving shaft S1 is one, and the lockers 31 of the locking means are deformed to be spaced apart from each other by two. You can do that,

This is to ensure that the locker 31 in one place can be moved to the locked position even if the locking projection 20P of the drive shaft S1 is at any position.

Through this, when the locker is one and the locking projection of the driving shaft is lowered to come into contact with the locker, it is possible to prevent a situation in which the locking function cannot be performed.

In the drawings, the two rockers are provided with respective solenoids 33 and the like,

If necessary, two rockers may be deformed by one solenoid or the like.

As can be seen from [A] [B] [C] of Fig. 5, regardless of the position of the locking projection 20P, locking by at least one locker 31 is realized to prevent safety accidents and the like. Can be achieved more perfectly.

In addition, if the locker is locked by the forward movement of the locker,

When the drive shaft rotates

When there is only one locker and the projection is not in contact with the rocker, the rotation of the drive shaft may cause the rocker or the drive shaft to be damaged or worn out (it may lead to breakage due to repeated impact).

In the case of two lockers, since the distance between the drive shaft locking protrusion 20P and the rocker is short, the impact on the rocker or the drive shaft is reduced even in intentional or unintentional operation, thereby preventing damage or wear.

In the above description, a general known technique related to a motor engine, a scooter, a reducer constituting a reducer, a planetary unit or a clutch for a planetary reducer, etc. is omitted, but those skilled in the art can easily infer, infer, and reproduce the same.

In addition, in the above description of the present invention, the gear and the driving device having a specific shape and structure have been described with reference to the accompanying drawings, but the present invention can be variously modified, changed and replaced by those skilled in the art. Substitutions should be construed as falling within the protection scope of the present invention.

A: Drive M: Motor
Mr: Rotor Ms: Stator
S1: drive shaft G1: drive gear
Mh, Gh, Sh: Housing C1, C2: Clutch
W: Wheel W1: Hub
S2: driven shaft G2: driven gear
R: Reducer U: Planetary Unit
Up: Planetary Gear Us: Solar Gears
Ur: Ring Gear GC: Disk Combination Gear
11,13: disk 11a, 13a: gear
GR: Roller Gear Assembly 20: Block
21,23 support 25: roller
L: Locking Means 31: Lockers
33: solenoid 35: spool
37: case
H: heat dissipation means H1: heat dissipation fins
40: air cooling part 41: fan
43: intake portion 45: exhaust portion

Claims (4)

A motor M including a drive shaft S1 having a drive gear G1,
It includes a driven shaft (S2) having a driven gear (G2) is engaged with the drive gear (G1) of the motor (M) to form a cross-axis gear,

The motor (M) is further provided with a heat dissipation means (H),
The heat dissipation means (H) includes an air cooling unit 40 formed by installing an air passage in the motor (M),
The air passage is introduced to the outside of the wheel hub, characterized in that after passing through the motor (M) through the intake portion 43, and leads to the exhaust portion (45). The method of claim 1,
The air cooling unit 40 detects this when the temperature of the motor (M) engine rises, and if the detected temperature exceeds the reference value, the cooling fan 41 installed inside or outside the motor (M). Forced cooling)
Air introduced by the fan 41 is passed through the air passage, the drive unit introducing a motor engine to the outside of the wheel hub. The method according to claim 1 or 2,
The drive gear (G1) or the drive shaft (S1) is a drive device incorporating a motor engine outside the wheel hub, characterized in that the one-way clutch is provided so that the reverse rotation of the motor (M) is not transmitted to the wheel. The method of claim 3, wherein
A plurality of disks 11 and 13 each having a different size and having a plurality of disks 11a and 13a repeatedly formed at the rim to form a single gear;
Spacers 15 for spaced apart fixing of each of the disks 11 and 13
It is provided in the drive shaft (S1) to form the drive gear (G1) of the disk combination gear (GC) form,

One end of the driven shaft (S2) is provided with first and second supports 21, 23,
A plurality of rollers 25 are fixed between the two supports through the shaft pin 25a
The driven gear in the form of a roller gear assembly GR in which the roller 25 meshes with the gears 11a and 13a of each of the disks 11 and 13 of the disk combination gear GC to form a cross-axis gear. G2)

Drive device incorporating a motor engine outside the wheel hub, characterized in that stable engagement with the driven gear (G2) is easily implemented by changing the length of the spacer (15) in the disk combination gear (GC).

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