CN1272712A

CN1272712A - Improved auxiliary power motor driving structure

Info

Publication number: CN1272712A
Application number: CN99106194A
Authority: CN
Inventors: 李宜和; 李书贤
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-04
Filing date: 1999-05-04
Publication date: 2000-11-08

Abstract

An improved auxiliary-power motor transmission structure is formed from wheel shell, stator shell, rotor plate, stator ring, hollow axle sleeve and central wheel axle, placed in the centre of an electric vehicle wheel and connected with the wheel in the transmission mode to produce rotation power, the rotor plate is fixed in hollow axle sleeve, and the stator ring is placed in the interior of stator shell, the said stator shell is cover-placed in one side of hollow axle sleeve to make the stator ring surround rotor plate, the hollow axle sleeve bearing is cover-placed in the proper position of central wheel axle body, and two disk covers of whell shell are cover-placed on two sides of central wheel axle to cover all components, the hollow axle sleeve is combined in the one-way clutch of wheel shell, so its volume is small and the loss of mechanical transmission efficiency is low.

Description

The drive mechanism of the auxiliary driving motor of improvement

The present invention relates to vehicle transmission gear, relate in particular to a kind of drive mechanism of auxiliary driving motor of improvement.

The bicycle of commonly using is the widely used a kind of traffic means of transport of people, and particularly in recent years, people's environmental consciousness strengthens, and bicycle more can become the vehicles of future ideality.Yet bicycle must be trampled by the manpower of rider, could obtain power and advances, if when distance is far away or backhaul is felt tired, also need tries to ride to sail, thereby make people feel inconvenience.In view of this, the practitioner of the sector endeavours to develop a kind ofly to install the electric bicycle of electric-powered system and the product of electric motor car additional, but the motor vehicle structure of developing of commonly using still exists following dynamical system and motor cognate to change technical problems such as distance.One, dynamical system problem: as commonly use the dynamical system of electric bicycle, its electro-motor is to adopt traditional drum forms, be that motor drive shaft is connected electric bicycle pedal spindle place, the power of motor must be transported to the hinge wheel of pedal earlier, drives wheel turns again; The electric motor car of and for example commonly using is that motor is placed the back vehicle frame, and the minor sprocket with chain or belt drive trailing wheel drives wheel turns again.Chuan Lian machine power transmission system often makes gearing efficient lower like this, can not obtain desired effects effectively.At such problem, release patent No. 83205571, its internal structure is also quite loaded down with trivial details, passes through several sections gear transmission again simultaneously, power could be reached the wheel of electric motor car, and by contrast, it is huge that its overall structure must be tending towards.Two, the motor cognate changes apart from phenomenon: commonly use electric wheel motor cylindraceous, be in the majority with direct-current brush motor, it is except that the shortcoming that takes up room, because stator (being silicon steel sheet) the T shape teeth of direct-current brush motor are counted common multiple or the equal number that common design is rotor (being a magnet ring) magnetic pole, if rotor is just relative with magnetic field center point with magnetic pole of the stator together the time, promptly form a dead angle state, produce the shortcoming of vibrations when causing rotor that startup difficulty and rotation are arranged, just alleged cognate changes apart from phenomenon, if when using 3-phase brushless motor as the accessory power system of electric motor car wheel, can produce cognate too changes apart from phenomenon, cause the rotor startup difficulty, and the running irregularity, noise produced, problems such as coil heating, not only influence motor life, also can burn Hall unit.Therefore change apart from phenomenon for the dynamical system of commonly using the electric motor car auxiliary driving motor and cognate, improved necessity is all arranged.

Main purpose of the present invention is, a kind of drive mechanism of auxiliary driving motor of improvement is provided, it makes hollow shaft housing directly be combined in the one-way clutch (OVER RUNNING CLUTCHES) of hub one side central authorities with spiral interlocking or driving key, and no longer drive the hub rotation via the planetary gearsets in the hub, when rotor rotates with the starting of three phase electric machine characteristic, can drive hub by hollow shaft housing rotates, and hub is installed in the wheel rim central authorities of vehicle, can directly make the vehicle wheel turns effectively, to reduce the loss of machinery driving efficiency, make all effective service vehicle of the power of being exported advance its simple in structure and lightweight and portable in volume.

Of the present invention time a purpose is, a kind of drive mechanism of auxiliary driving motor of improvement is provided, the formed T shape of the inner ring surface teeth number that its ring-type silicon steel sheet piles up the track ring that forms is the common multiple of non-rotor disk magnet plate number, whereby rotor disk is placed the centre of track ring, be a suitable space, this rotor disk i.e. magnetic field center point with track ring is not corresponding mutually, when being started, rotor disk not limited by the dead angle, it can smooth and easyly start, and running the time also can reduce cognate and change apart from the generation of (COGGING TORGUE) phenomenon and voice, to keep auxiliary driving motor certain useful life.

The objective of the invention is to realize by following technical scheme.

The drive mechanism of the auxiliary driving motor of the present invention's improvement, comprise gear transmission system, its improvements are, it is made up of a hub, a stator case, a rotor disk, a track ring, a hollow shaft housing and a center-wheel arbor, and be installed in the wheel central authorities of electric motor car, be in transmission connection with wheel, produce rotary power; Wherein, a hub, it is that two disk covers are the corresponding shape of opening and are folded in annulus both sides and form, and wherein the central authorities of a disk cover are installed with an one-way clutch, and the centre of another disk cover is embedded with a bearing; One stator case, its tray body that is cylindric by one and is provided with a unidirectional opening is formed; One rotor disk, it is a motor rotor in the form of annular discs, the disk body periphery on average is embedded with several magnet; One track ring, it is piled up by several pieces ring-type silicon steel sheets and forms, and its inner ring surface is provided with several T shape teeth, and winding three-phase star coil; One hollow shaft housing, it is the cylinder of a hollow, respectively is embedded with a bearing in its two ends endoporus; One center-wheel arbor, it is a cylinder shaft body, and the axle body appropriate location is provided with two guide grooves, and this guide groove extends to an end of wheel shaft; Rotor disk is fixed on hollow shaft housing stack shell book office, track ring is inserted stator case inside, stator case is nested with in hollow shaft housing stack shell one side, make track ring just around around the rotor disk, the bearing of hollow shaft housing is nested with in the appropriate location of center-wheel arbor axle body, and two disk covers of hub are set in the both sides of center-wheel arbor respectively, and coat above-mentioned each member, hollow shaft housing is combined in the one-way clutch of hub one side central authorities, forms auxiliary driving motor.

Above-mentioned purpose of the present invention can also further realize by following technical measures.

The drive mechanism of the auxiliary driving motor of the present invention's improvement, the T shape teeth number that the inner ring surface of described track ring is provided with is that the common multiple of rotor disk magnet number adds again, a subtrahend number of teeth, becomes the common multiple of non-rotor disk magnet number; Be equipped with more than one temperature detect switch (TDS) on the arbitrary electric wire in three electric wires of the three-phase star coil of described track ring winding, this temperature detect switch (TDS) is installed in a side of track ring; Described track ring sets into the internal fixation of stator case, and starts on the angle position at the optimum motor of stator case madial wall, is installed with the Hall unit group of sensing brushless motor commutation sequential signal; Can add to establish another track ring in the precalculated position in the described stator case, and on hollow shaft housing, also add to establish a rotor disk, make another track ring around this rotor disk, the effect that starts at the same time or separately by two groups of starters, obtain the effect of multistage torsion and velocity transformation output, one group of starter of Qi Donging can not generate electricity to charge the battery by the characteristic of back electromotive force; The stack shell of described hollow shaft housing one end directly wears one-way clutch, and it directly combines with hub, and this wears fixed form can be screw thread, driving key or equivalent interlocking mode; The inner edge surface of described hub two disk covers is provided with several radiator shutters; Several set magnet of described rotor disk periphery can replace with multipole coil windings; Described Hall unit group (HALL IC SET) is to process respectively with three Hall units (HALL IC) to be assembled on the circuit board, and leads and be provided with several electric wire and constitute; The Hall unit group of described detecting brushless motor commutation sequential signal, can decoder (ENCODER), separate hornwork (RESOLVER), the back electromotive force period signal replaces.

Concrete structure of the present invention is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is a combining structure generalized section of the present invention

Fig. 2 is a combining structure side-looking semi-section schematic diagram of the present invention

Fig. 3 is rotor disk of the present invention and stator ring structure schematic diagram

Fig. 4 is the embodiment schematic diagram of user mode of the present invention

Fig. 5 is rotor disk of the present invention and another example structure schematic diagram of track ring

Fig. 6 is the combination generalized section of multistage speed change embodiment of the present invention

Fig. 7 is another embodiment of the present invention combining structure generalized section

Consult Fig. 1, shown in Figure 2, the drive mechanism of the auxiliary driving motor of the present invention's improvement is made up of hub 1, stator case 2, rotor disk 3, track ring 4, hollow shaft housing 5 and center-wheel arbor 6, is installed in electric motor car wheel central authorities, be in transmission connection with wheel, produce rotary power; Wherein, hub 1 is folded in an annulus 12 both sides by two disk covers 11,11 ' be corresponding shape of opening and is formed, and make disk cover 11,11 ' combine with annulus 12, wherein a disk cover 11 central authorities are installed with an one-way clutch 13, another disk cover 11 ' centre be embedded with a bearing 14; The tray body that stator case 2 is cylindric by one and is provided with a unidirectional opening is formed, and its centre is embedded with a bearing 21; Rotor disk 3 is motor rotors in the form of annular discs, on average is embedded with eight magnet 31 around the disk body, buries a magnet 31 underground and represents a magnetic pole, so the magnetic pole of rotor disk 3 is the ends of the earth, and have the rotor disk 3 of the ends of the earth, only be preferable enforcement state, if adopt other numbers of poles also can; Track ring 4 is piled up by several pieces ring-type silicon sheets and forms, its inner ring surface is provided with several grooves, this groove forms several T shape teeth 41, the number of these T shape teeth 41 is that three times of magnet 31 numbers of rotor disk 3 add three teeth again or subtract three teeth, just be 21 teeth or 27 teeth, be the common multiple (shown in Figure 3 is 27 teeth) of non-rotor disk 3 magnet 31 numbers; Whereby, again track ring 4 is adopted three-phase star coil 42 windings, to constitute a kind of stator of 3-phase brushless motor, be equipped with one or more temperature detect switch (TDS) 7 on the arbitrary electric wire in three electric wires therein, and temperature detect switch (TDS) 7 is installed in track ring 4 one sides; Hollow shaft housing 5 is the cylinder of a hollow, is provided with screw thread 51 around the stack shell of one end, and respectively is embedded with a bearing 52 in its two ends endoporus; Center-wheel arbor 6 is the cylinder shaft body that are installed in the front-wheel fork arm or the trailing wheel fork arm wheel center of electric motor car, and the axle body appropriate location is provided with two

guide grooves

61,62, and this

guide groove

61,62 extends to an end of center-wheel arbor 6.

When the present invention makes up, be that rotor disk 3 is fixed on hollow shaft housing 5 stack shell book offices, track ring 4 is inserted stator case 2 internal fixation, select the optimum motor in stator case 2 madial walls 360 degree to start the angle position, be installed with a Hall unit group 8, this Hall unit group 8 is in order to the commutation sequential signal of sensing brushless motor, make the electric wire of the three-phase wire of track ring 4 and Hall unit group 8 extend by the sidewall of stator case 2, stator case 2 is nested with in hollow shaft housing 5 stack shells one side with its central bearing 21, make track ring 4 just surround rotor disk 3 around be an appropriate gap, after stator case 2 and rotor disk 3 all are located at hollow shaft housing 5, this hollow shaft housing 5 promptly can its bearing 52 be nested with the appropriate location at center-wheel arbor 6 axle bodies, and stator case 2 is fixed in center-wheel arbor 6 places, so that the electric wire of the three-phase wire of track ring 4 and Hall unit group 8 is embedded in two guide grooves 61 of center-wheel arbor 6 respectively, in 62, this stator case 2 is fixed, and rotor disk 3 and hollow shaft housing 5 can rotate on center-wheel arbor 6.Make two disk covers 11,11 ' respectively of hub 1 be set in the both sides of center-wheel arbor 6 again, and folder is established this annulus 12, and coat above-mentioned each member, the electric wire that makes the three-phase wire of track ring 4 and Hall unit group 8 exposes outside hub 1 via two

guide grooves

61,62 of center-wheel arbor 6.Its hollow shaft housing 5 is directly to be combined in the one-way clutch 13 of hub 1 one side central authorities with its screw thread 51, like this, promptly forms auxiliary driving motor of the present invention.Its rotor disk 3 promptly directly reaches hub 1 with the power of rotation by hollow shaft housing 5, reduces because of the too much machinery driving efficiency loss that transmission device caused, and simple in structure, reaches light practicality, purpose that cost is low.

Consult shown in Figure 4ly, this auxiliary driving motor be installed in the wheel body central authorities of vehicle, promptly can this center-wheel arbor 6 as the axle of vehicle wheel, and be installed in the front-wheel fork arm or the trailing wheel fork arm place of electric motor car.When starting rotation when rotor disk 3 three characteristics of the middle term brushless motor motor characteristics, can drive one-way clutch 13 and hub 1 rotation by this hollow shaft housing 5, to make the wheel rotation of electric motor car effectively, in this a succession of transmission of power, the sprocket wheel or the geared system that all do not relate to easy consume dynamic efficiency, therefore its mechanical efficiency is quite high, to reach the effect that powered vehicle is advanced.

Consult shown in Figure 5, the above-mentioned hollow shaft housing 5 and one-way clutch 13 combinations of hub 1, be not limited to the mode of taking screw thread sealed, the stack shell of this hollow shaft housing 5 also can be provided with a driving key 53 outward, to replace intrinsic screw thread interlocking mode, make this driving key 53 drive one-way clutch 13 and hub 1 rotation, structure is simplified and good transfer motion power effect and reach equally.

Because T shape teeth 41 numbers of track ring 4 of the present invention are the common multiple (shown in Figure 3) of non-rotor disk 3 magnet 31 magnetic poles, coil 42 magnetic poles of the three-phase star coil windings of its formation, the common multiple of also non-rotor disk 3 magnet 31 magnetic poles, but be evenly distributed.Therefore, the magnetic pole of this rotor disk 3 promptly can't be corresponding fully mutually together with track ring 4 coil magnetic field central points, can eliminate the shortcoming that starts the dead angle in this case.After the three-phase star coil windings of track ring 4 is accepted the motor driven message of controller, promptly by three line powered of three-phase star coil windings, this rotor disk 3 can be rotated in smooth and easy startup, and when rotated, also can eliminate cognate changes apart from phenomenon, make auxiliary driving motor reduce situations such as vibrations, noise, coil high temperature, reach certain useful life to keep brushless auxiliary driving motor.The magnet 31 former somes of being buried underground around this rotor disk 3 that are not limited to, as shown in Figure 6, the magnet 31 of this rotor disk 3A also can be made as 12, and the T shape teeth 41A number of teeth of track ring 4A also adds three teeth again or subtracts three teeth (Figure 4 shows that 39 teeth) for three times of magnet 31 numbers.

Consult Fig. 3, shown in Figure 6, the formation of above-mentioned Hall unit group 8 is to process respectively with three Hall units 81 (Hall IC) to be installed on the circuit board 82, and lead and be provided with several electric wire and constitute, promptly three of this Hall unit group 8 Hall units 81 are connected by circuit board 82 with the three-phase wire of the track ring 4 of brushless motor, at this moment have that the those of ordinary skill of general electrician's general knowledge all can implement to finish, so as to being installed in stator case 2 madial walls, start the angle place through the 360 degree optimum motors that actual experiment obtained, commutation sequential signal with the sensing brushless motor, the Hall unit group of the commutation sequential signal of detecting brushless motor, can use decoder, the period signal of separating hornwork or back electromotive force replaces, and the model of the used Hall unit of the present invention is Hall No.A3171XUA.

Consult shown in Figure 7, in the stator case of the present invention 2 except that being provided with a track ring 4, also can add again in the precalculated position track ring 4 ', and axle sleeve 5 add to be provided with on also a rotor disk 3 ', make track ring 4 ' surround rotor disk 3 ', by the design of two groups of starters, make auxiliary driving motor of the present invention, can start respectively or two groups rotate simultaneously, and obtain the effect of multistage torsion and velocity transformation output.If one group of starter is as the electric wheel power resources, the back electromotive force characteristic when another group starter then utilizes no power, and, supply with the some electric power of battery as a generator, to prolong the service time of battery.

In sum, the drive mechanism of the auxiliary driving motor of the present invention's improvement, global design is reasonable, and true tool practicality and creativeness, utilization means are also novel, meet patent requirement, so file an application in accordance with the law.

Claims

1, a kind of drive mechanism of auxiliary driving motor of improvement, comprise gear transmission system, it is characterized in that it is made up of a hub, a stator case, a rotor disk, a track ring, a hollow shaft housing and a center-wheel arbor, and be installed in the wheel central authorities of electric motor car, be in transmission connection with wheel; Wherein, a hub, it is that two disk covers are the corresponding shape of opening and are folded in annulus both sides and form, and wherein the central authorities of a disk cover are installed with an one-way clutch, and the centre of another disk cover is embedded with a bearing; One stator case, its tray body that is cylindric by one and is provided with a unidirectional opening is formed; One rotor disk, it is a motor rotor in the form of annular discs, the disk body periphery on average is embedded with several magnet; One track ring is piled up by several pieces ring-type silicon steel sheets and to form, and its inner ring surface is provided with several T shape teeth, and winding three-phase star coil; One hollow shaft housing, it is the cylinder of a hollow, respectively is embedded with a bearing in its two ends endoporus; One center-wheel arbor, it is a cylinder shaft body, and the axle body appropriate location is provided with two guide grooves, and this guide groove extends to an end of wheel shaft; Rotor disk is fixed on hollow shaft housing stack shell book office, track ring is inserted stator case inside, stator case is nested with in hollow shaft housing stack shell one side, make track ring just around around the rotor disk, the bearing of hollow shaft housing is nested with in the appropriate location of center-wheel arbor axle body, and two disk covers of hub are set in the both sides of center-wheel arbor respectively, and coat above-mentioned each member, hollow shaft housing is combined in the one-way clutch of hub one side central authorities, forms auxiliary driving motor.

2, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that, the T shape teeth number that the inner ring surface of described track ring is provided with is that the common multiple of rotor disk magnet number adds again, a subtrahend number of teeth, becomes the common multiple of non-rotor disk magnet number.

3, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that, be equipped with more than one temperature detect switch (TDS) on the arbitrary electric wire in three electric wires of the three-phase star coil of described track ring winding, this temperature detect switch (TDS) is installed in a side of track ring.

4, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that, described track ring sets into the internal fixation of stator case, and on the optimum motor starting angle position of stator case madial wall, be installed with the Hall unit group of sensing brushless motor commutation sequential signal.

5, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 4, it is characterized in that described Hall unit group is to process respectively with three Hall units to be assembled on the circuit board, and lead and be provided with several electric wire and constitute.

6, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 4, it is characterized in that, the Hall unit group of described detecting brushless motor commutation sequential signal, can be with decoder, separate hornwork, the back electromotive force period signal replaces.

7, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that, can add to establish another track ring in the precalculated position in the described stator case, and on hollow shaft housing, also add to establish a rotor disk, make another track ring around this rotor disk.

8, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that the stack shell of described hollow shaft housing one end directly wears one-way clutch, directly combines with hub.

9, according to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that the inner edge surface of described hub two disk covers is provided with several radiator shutters.

According to the drive mechanism of the auxiliary driving motor of the described improvement of claim 1, it is characterized in that 10, several set magnet of described rotor disk periphery can replace with multipole coil windings.