CN2700636Y

CN2700636Y - Wheel hub motor clutch structure composed of inner roller type single-direction bearing

Info

Publication number: CN2700636Y
Application number: CN 200420059766
Authority: CN
Inventors: 查祖蘭
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-21
Filing date: 2004-05-21
Publication date: 2005-05-18
Anticipated expiration: 2014-05-21

Abstract

The utility model relates to a wheel hub motor clutch structure composed of an inner roller type single-direction bearing. An electric motor is equipped in the hub. The rotating output end of the electric motor rotor is fixedly connected to a shaft sleeve. The trepan boring of an inner roller type single-direction bearing is cover-mounted on the shaft sleeve. The outer ring of the inner roller type single-direction bearing is fixed on a hub, forming a one-way clutch of the hub motor. The reversal action of the inner roller type single-direction bearing is implemented through a roller and an actuatorn groove, so there is no ratchet noise when the bearing reverses. What is more, a roller and a shrapnel are positively limited in the external ring by an inner ring. They can not be taken off no matter how intense the vibration is. The inner trepan boring of the inner roller type single-direction bearing is directly sleeved with the shaft sleeve to accomplish the immobilising and fluctuating. The shaft sleeve and each roller are stressed on average. The operating of the model is unlocked. The utility model is comparatively suitable to be served as a one-way clutch of the hub motor.

Description

Constitute the structure of hub motor clutch with interior roller type one way bearing

Technical field

The utility model is for constituting the structure of hub motor clutch with interior roller type one way bearing, being meant the hub motor structural design that is exclusively used in electric bicycle especially.

Background technique

The hub motor structural design of conventional electric bicycle, see also and shown in Figure 2ly be provided with an electric motor 11 in wheel hub 10 enclosure interior groups, and with the rotor 111 of electric motor 11 distolateral with an axle sleeve 12 fixed after, wore axle sleeve 12, rotor 111 and wheel hub 10 with a stationary axle 13 again, in order to do making hub motor can see through wheel fork 141 places that stationary axle is mounted on bicycle 14, carry out the turning operation (as shown in Figure 1) of electric bicycle;

Aforementioned hub motor can group be provided with bearing 15 between axle sleeve 12 and stationary axle 13, between axle sleeve 12 and wheel hub 10, then be equipped with unilateral bearing 16 as clutch (as shown in Figure 2), in order to do when the motor running start, can travel through axle sleeve 12 and 10 rotations of unilateral bearing 16 drive wheel hubs, at this moment, between unilateral bearing and the axle sleeve be the stopper state; When the motor in the running was stopped power supply, wheel hub still can see through the bearing rotation and travel; And fall back when affecting the electric bicycle of halted state as the user, between unilateral bearing and the axle sleeve reversible rotary state; Therefore, this unilateral bearing just can provide the function of clutch;

See also shown in Figure 3, this is the structural design of traditional Retchet gear type unilateral bearing 17, though be used in the fundamental function that clutch can be provided in the hub motor, yet the start space between its ratchet sheet 171 and the ratchet slot 172 is quite big, cause electric motor to activate the initial of running, electric bicycle has tangible pause and transition in rhythm or melody sense (vibrations), and falls back when affecting electric bicycle as the user, then has the noise that ratchet impacts start;

See also shown in Figure 4, this is chute-type unilateral bearing 18 structures, its be with pulling part 181 assembly in start chute 182, start chute 182 is the groove structure of inner wide and outer narrow, the promotion that sees through trigger switch 183 and spring 184 can make pulling part 181 be positioned at the narrow end or the wide end of chute in good time; Aforementioned chute-type unilateral bearing is when operating as the hub motor clutch, though do not have tangible pause and transition in rhythm or melody sense and reversing noise; Yet this pulling part is to keep against the pushing and pressing of the elasticity of trigger switch and spring to be positioned at the normality position fully, is carrying out when industrial circle in the assembly process of chute-type unilateral bearing and hub, and the pulling part vibrations when working quite easily comes off in chute and drops out; Moreover the spring slot molding technology in its start chute of this chute-type unilateral bearing and the chute is quite high, and relative cost is also high; Moreover this start chute and spring slot take sizable degree of depth, have also limited the quantity of plastic start chute relatively;

See also shown in Figure 5, this is outer roller type one way bearing 19, its outer periphery in interior ring piece 191 form start chute 192, be equipped in the start chute 192 with roller 193 again, and, carry out unidirectional running operation in order to do making roller 193 be positioned at outer shroud 194 with trigger switch 194 and spring 195 pushing and pressing rollers 193; Yet, its structure and not being suitable for the axle sleeve of hub motor combines, because when axle sleeve combines with the interior ring piece axis hole that is somebody's turn to do outer roller type one way bearing, must see through a bond and be embedded that the side combines both (scheming not show) between the keyway of interior ring piece axis hole 196 keyways 197 and axle sleeve outer rim with being able to stopper, and the thickness of this axle sleeve is quite limited, and the keyway that is difficult to moulding one enough degree of depth thereon; And if direct protrusion of bond taken shape on the axle sleeve, then the fabricating cost of axle sleeve will significantly improve; Moreover the stuck point formula braking that this axle sleeve and overrunning clutch see through bond combines, and cause can't steady running situation (eccentricity issues) because of the member error quite easily, for the hub motor that must run up and be not suitable for;

Through above explanation as can be known, be used in the unilateral bearing structure of electric bicycle at present, have fabricating cost height, starting shock sense, member easily deviate from, can't steady running etc. many defectives, and be unfavorable for that industrial circle develops, the necessity that in addition significantly breaks through is arranged further really, in order to do the actual demand that more can meet industrial circle.

The model utility content

Main purpose of the present utility model is to provide the structure that constitutes the hub motor clutch with interior roller type one way bearing, because interior roller type one way bearing is to see through roller and start groove as the de-rotation operation, there is no the ratchet noise when therefore reversing; Moreover, because positively being limited by interior ring, roller and shell fragment be positioned at outer shroud, so roller and shell fragment, even the anxiety that strenuous vibration does not also have; In addition, in this roller type one way bearing formed in trepanning be to be able to directly carry out stopper or rotation operation with the axle sleeve fit, and axle sleeve and each roller is stressed quite average, it is also smooth and easy to turn round, and quite is suitable as the overrunning clutch use of hub motor.

For achieving the above object and effect, the technological scheme of being taked is as follows:

Constitute the structure of hub motor clutch with interior roller type one way bearing, be in wheel hub, to be equipped with electric motor, make the rotation output terminal and an axle sleeve of electric motor rotor fixed, be sheathed on axle sleeve with a unilateral bearing, and wore wheel hub, axle sleeve, rotor with a stationary axle, in order to do establishing with the wheel fork locking group of the moving bicycle of stationary axle power supply; It is characterized in that: this unilateral bearing is made of an interior roller type one way bearing, and interior roller type one way bearing is made of an outer shroud, a majority roller, most individual shell fragment and an interior institute that encircles; Outer shroud is concaved with most start grooves in inwall, and start groove one side is shaped to other side of deep end and then is shallow end, and roller is equipped in the start groove, and shell fragment is disposed at the deep end of start groove, and makes the end pushing and pressing roller that balances or cancel each other of shell fragment be located at shallow end; Should in encircle then that ring set places the outer shroud inwall, and the sash restriction roller and the shell fragment that see through interior ring shift out; Should be sheathed on outside the axle sleeve with its trepanning by interior roller type one way bearing, and be fixedly arranged on wheel hub, in order to do the rotation output overrunning clutch that constitutes hub motor with its outer shroud.

The described structure that constitutes the hub motor clutch with interior roller type one way bearing, can set actuation gear in electric motor rotor output terminal, several reduction gear of configuration on a rotating disk, the one distolateral axle sleeve that forms of rotating disk, make meshing each reduction gear in actuation gear autorotation disk center, the outer rim of each reduction gear is then meshing with a sun ring gear, and sun ring gear is to be fixedly arranged in the wheel hub; Axle sleeve on the rotating disk is the trepanning fit with interior roller type one way bearing, and the outer shroud and the hub shell of roller type one way bearing is fixed in the order.

Described structure with interior roller type one way bearing formation hub motor clutch, this sun ring gear can be directly molded on the electric motor shell.

Description of drawings

The figure number explanation

10 wheel hubs, 11 electric motors

111 rotors, 12 axle sleeves

13 stationary axle, 14 bicycles

141 wheel forks, 15 bearings

16 unilateral bearings, 17 Retchet gear type unilateral bearings

171 ratchet sheets, 172 ratchet slots

18 chute-type unilateral bearings, 181 pulling parts

182 start chutes, 183 trigger switch

184 springs, 19 outer roller type one way bearings

Ring piece 192 start chutes in 191

193 rollers, 194 trigger switch

195 springs, 196 axis holes

197 keyways

20 wheel hubs, 21 containing spaces

22 cappings, 221 perforation

23 screws, 24 clutch shaft bearings

25 second bearings, 30 electric motors

31 stators, 32 rotors

33 axle sleeves, 34 stationary axle

Roller type one way bearing 41 outer shrouds in 40

42 rollers, 43 shell fragments

Ring 441 sashes in 44

45 start grooves, 451 deep ends

452 shallow end, 46 trepannings

50 wheel forks, 60 train of reduction gears

61 actuation gears, 62 rotating disks

63 reduction gear, 64 axle sleeve structures

65 sun ring gears, 66 motor shells

Graphic explanation

Fig. 1 is the existing electric bicycle schematic representation that is equiped with hub motor.

Fig. 2 is known hub motor cross-sectional schematic.

Fig. 3 is known Retchet gear type unilateral bearing structure cross-sectional schematic.

Fig. 4 is known chute-type unilateral bearing structural upright schematic representation.

Fig. 5 is known outer roller type one way bearing broken section exploded perspective schematic representation.

Fig. 6 is the utility model hub motor perspective exploded view.

Fig. 7 is a roller type one way bearing broken section three-dimensional exploded view in the utility model.

Fig. 8 is a roller type one way bearing stereogram in the utility model.

Fig. 9 is a roller type one way bearing sectional view in the utility model.

Figure 10 is the utility model hub motor user mode cross-sectional schematic.

Figure 11 is a roller type one way bearing stopper state cross-sectional schematic in the utility model.

Figure 12 is a roller type one way bearing de-rotation state cross-sectional schematic in the utility model.

Figure 13 is that the utility model hub motor is equipped with train of reduction gears state cross-sectional schematic.

Figure 14 is the meshing view of the train of reduction gears of Figure 13.

Embodiment

About the utility model for reaching above-mentioned purpose, the technology that is adopted, means and other effect, lift a preferable possible embodiments now and cooperate graphic detailed description as after; At first, please cooperate and consult shown in Fig. 6,7,8,9,10, what the utility model embodiment was provided is a kind of with the structure of interior roller type one way bearing 40 as the hub motor overrunning clutch, mainly be in wheel hub 20, to be equipped with electric motor 30, and connect

axle sleeve

33 and 20 constitutors of wheel hub with interior roller type one way bearing 40; Wherein:

This wheel hub 20 is the wheel hubs 20 (can be front-wheel or trailing wheel) for electric bicycle, forms a containing space 21 (21) in the wheel hub 20; The containing space 21 of wheel hub 20 can see through capping 22 and cover this containing space 21 of sealing, and can see through screw 23 sealed cappings 22 and wheel hub 20, and capping 22 walls can offer perforation 221 and can organize and establish a clutch shaft bearing 24 in it;

This electric motor 30, mainly constituted by stator 31 and rotor 32, be installed in the containing space 21 of wheel hub 20, the rotation output terminal of electric motor 30 rotors 32 is fixed with an axle sleeve 33, wore wheel hub 20, axle sleeve 33, rotor 32 and clutch shaft bearing 24 with a stationary axle 34, and be installed between stationary axle 34 and the axle sleeve 33 with one second bearing 25; Can the power wheel fork 50 locking groups of moving bicycle of stationary axle 34 are established;

Roller type one way bearing 40 in being somebody's turn to do is to be made of outer shroud 41, roller 42,

shell fragment

43 and 44 on interior ring; Outer shroud 41 is concaved with most start grooves 45 in inwall, start groove 45 1 sides are shaped to deep end 451 other sides and then are

shallow end

452,42 of this rollers are equipped in the start groove 45, and shell fragment 43 is disposed at the deep end 451 of start groove 45, and make the end pushing and pressing roller 42 that balances or cancel each other of shell fragment 43 be located at shallow end 452; Should in ring 44 then ring set place outer shroud 41 inwalls, and the sash 441 restriction rollers 42 and the shell fragment 43 that see through interior ring 44 shift out; Roller type one way bearing 40 in being somebody's turn to do is sheathed on outside the axle sleeve 33 with its trepanning 46, and is fixedly arranged on wheel hub 20 with its outer shroud 41, to constitute the overrunning clutch of hub motor;

The above assembly pass that is each member of the utility model and structure is the position, and therefore, the utility model can constitute interior roller type one way bearing 40 the overrunning clutch structure of wheel hub electric motors; Now its user mode is described in detail as follows:

Please consult shown in Figure 10 again, it is fixed with the wheel fork of electric bicycle that hub motor of the present utility model can see through stationary axle 34, give electric motor 30 when power supply and exercise running during start, the rotation output of motor is to see through roller type one way bearing 40 in axle sleeve 33 transmissions, see through interior roller type one way bearing 40 direct interlock wheel hub 20 turning operations again, at this moment, be stopper state person (as shown in figure 11) between axle sleeve 33 and the interior roller type one way bearing 40; Because, this moment, the sense of rotation of axle sleeve 33 just promoted each roller 42 of interior roller type one way bearing 40 shallow end 452 places toward start grooves 45, cause roller 42 to be filled out and squeeze between axle sleeve 33 and interior roller type one way bearing 40, axle sleeve 33 can't be rotated on interior roller type one way bearing 40 by stopper;

In the middle of electric bicycle travelled, if stop power supply when giving electric motor 30, then wheel hub 20 still can see through the rotation of travelling of first and second bearing;

And fall back when affecting the electric bicycle of halted state as the user, between interior roller type one way bearing 40 and the axle sleeve 33 reversible rotary state (as shown in figure 12); Because, this moment, the sense of rotation of axle sleeve 33 just made each roller 42 promotion shell fragment 43 of interior roller type one way bearing 40 and deep end 451 places of past start grooves 45 move, and when roller 42 is sunken when exceeding predetermined amplitude, axle sleeve 33 can rotate in interior roller type one way bearing 40 smoothly; Roller type one way bearing 40 just can be used as the running clutch of hub motor in being somebody's turn to do by this.

It should be noted that of the present utility model in roller type one way bearing 40 be to see through roller 42 and start groove 45 as the de-rotation operation, there is no the ratchet noise when therefore reversing; Moreover, because positively being limited by interior ring 44, roller 42 and shell fragment 43 be positioned at outer shroud 41, so roller 42 and shell fragment 43, even the anxiety that strenuous vibration does not also have; In addition, should in roller type one way bearing 40 formed in trepannings 46 be to be able to directly and axle sleeve 33 fits carry out stopper or rotation operation, and axle sleeve 33 is stressed quite average with each roller 42, and it is also smooth and easy to turn round, and the overrunning clutch that quite is suitable as hub motor uses; In addition, the moulding system of this interior roller type one way bearing 40 is set as originally quite low, and equal area also can set the roller 42 of a greater number, can provide the hub motor of high torsion to use;

See also Figure 13, shown in 14, this is to be used in the hub motor that is equiped with planetray reducer group 60 to implement state, that is, can set actuation gear 61 in rotor 32 output terminals of electric motor 30, several reduction gear 63 of configuration on a rotating disk 62, the one distolateral axle sleeve structure 64 that then forms of rotating disk 62, make meshing this each reduction gear 63 in actuation gear 61 autorotation disks 62 centers, the outer rim of this each reduction gear 63 then meshes with a sun ring gear 65, this sun ring gear 65 is to be fixedly arranged in the wheel hub 20, also maybe can be directly molded on (as shown in figure 13) on the electric motor shell 66; Axle sleeve structure 64 on the aforementioned rotating disk 62 be with the utility model in the trepanning 46 fit persons of roller type one way bearing 40, and the outer shroud 41 of roller type one way bearing 40 is fixed with wheel hub 20 shells in the order; Therefore, the rotation output of electric motor 30 after train of reduction gears is slowed down can see through interior roller type one way bearing 40 equally and reach the clutch operation.

Claims

1. constitute the structure of hub motor clutch with interior roller type one way bearing, be in wheel hub, to be equipped with electric motor, make the rotation output terminal and an axle sleeve of electric motor rotor fixed, be sheathed on axle sleeve with a unilateral bearing, and wore wheel hub, axle sleeve, rotor with a stationary axle, in order to do establishing with the wheel fork locking group of the moving bicycle of stationary axle power supply; It is characterized in that: this unilateral bearing is made of an interior roller type one way bearing, and interior roller type one way bearing is made of an outer shroud, a majority roller, most individual shell fragment and an interior institute that encircles; Outer shroud is concaved with most start grooves in inwall, and start groove one side is shaped to other side of deep end and then is shallow end, and roller is equipped in the start groove, and shell fragment is disposed at the deep end of start groove, and makes the end pushing and pressing roller that balances or cancel each other of shell fragment be located at shallow end; Should in encircle then that ring set places the outer shroud inwall, and the sash restriction roller and the shell fragment that see through interior ring shift out; Should be sheathed on outside the axle sleeve with its trepanning by interior roller type one way bearing, and be fixedly arranged on wheel hub, in order to do the rotation output overrunning clutch that constitutes hub motor with its outer shroud.

2. the structure that constitutes the hub motor clutch with interior roller type one way bearing according to claim 1, it is characterized in that: can set actuation gear in electric motor rotor output terminal, several reduction gear of configuration on a rotating disk, the one distolateral axle sleeve that forms of rotating disk, make meshing each reduction gear in actuation gear autorotation disk center, the outer rim of each reduction gear is then meshing with a sun ring gear, and sun ring gear is to be fixedly arranged in the wheel hub; Axle sleeve on the rotating disk is the trepanning fit with interior roller type one way bearing, and the outer shroud and the hub shell of roller type one way bearing is fixed in the order.

3. the structure with interior roller type one way bearing formation hub motor clutch according to claim 2, it is characterized in that: this sun ring gear can be directly molded on the electric motor shell.