CN2859072Y

CN2859072Y - One-way clutch for moped

Info

Publication number: CN2859072Y
Application number: CN 200520116896
Authority: CN
Inventors: 蔡国法
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2007-01-17
Anticipated expiration: 2015-12-02

Abstract

The present utility model relates to an one-way clutch of the electric bicycle hub. It includes an active gear and a slave gear, said active gear connects with the output shaft of motor through a reducer, said slave gear is fixed on said hub. It is characterized by that a fixed groove is set at the outer margin of said active gear, in said fixed groove a tongue-clamping and a spring against the tongue of said tongue-clamping are set respectively. Said slave gear is jointed on the active gear, the tooth matching with the clamping tongue is set at the inner margin of the slave gear, the hollow between the tooths is filled with the wear resistant rubber. The present utility model has the advantages of less wearing, low noise and small space between inner and outer tooths when it is running idle.

Description

The overrunning clutch of wheel hub of electric bicycle

Technical field

The utility model relates to the wheel hub of electric bicycle technology, specifically is the one-way clutch of wheel hub of electric bicycle.

Background technique

Wheel hub of electric bicycle is the core component of electric bicycle, its performance directly has influence on the electric bicycle overall performance, and the wheel hub performance depends primarily on the quality of motor performance, the wheel hub of the brush motor that generally uses in early days, this wheel hub motor is in high speed rotating, and it is not long that therefore carbon brush is easy to damage working life; All use the wheel hub of brushless electric machine at present mostly, rotor is transferred to wheel hub by gear reducer with outputting power, this motor relative brush motor on stability and working life has had the raising of first mate's degree, but in adopting gear transmission therefore must between wheel hub and motor, be provided with overrunning clutch, and present overrunning clutch is roller clutch, clutch is divided into internal tooth and overcoat, on the internal tooth outer rim, be provided with wedge slot, be provided with roller in the groove, when internal tooth rotates, roller is being brought under the overcoat action of inertia on the more shallow position of bottom land, and this moment, roller can block internal tooth and overcoat, makes internal tooth can drive overcoat and rotates; When internal tooth stops operating, roller moves on on the darker position of wedge slot groove degree in that action of inertia is the next, this moment overcoat relatively internal tooth rotate freely, thereby realize the effect of overrunning clutch, this clutch realizes clutch function by the roller position, and in use wearing and tearing are very fast, make noise bigger, in the clutch process internal tooth need dally certain distance could and overcoat fasten, bigger to the impact of roller and parts, easily parts are caused damage.

The model utility content

The purpose of this utility model is to provide a kind of new structure overrunning clutch, has little, noise is light, interior external tooth the dallies closely spaced characteristics of wearing and tearing.

For achieving the above object by the following technical solutions:

A kind of overrunning clutch of wheel hub of electric bicycle comprises driving tooth and driven tooth, and driving tooth links by retarder and motor output shaft, and driven tooth is fixed on the wheel hub; It is characterized in that: have fixed groove on the outer rim of described driving tooth, fixed groove is divided into block tongue fixed groove and spring fixed groove, and a block tongue and spring are placed in respectively in the fixed groove, and spring holds on one's body the tongue of block tongue; Described driven tooth is socketed on the driving tooth, also is provided with the latch that matches with block tongue at the driven tooth inner edge, and the recess between latch and latch is filled by abrasive rubber.

The quantity of described block tongue fixed groove and spring fixed groove is five.

The utility model adopts and the complete different technologies scheme of technology before, the tongue of block tongue is pushed up outward in spring action, contact with the inner edge of driven tooth, when driving tooth stops operating, owing to filled in the groove abrasive rubber anti-, when block tongue jumps to the effect that recess is subjected to the buffering of picture glue from latch, sound and almost do not hear, the degree of wear reduces greatly simultaneously; When driving tooth rotates, because the latch that the driven tooth inner edge is established is very close, the segment distance that the driving tooth turn is very little, block tongue will hold on latch, rotates thereby drive driven tooth; The utlity model has little, noise is light, interior external tooth the dallies closely spaced characteristics of wearing and tearing thus.

Description of drawings

Fig. 1, structural representation of the present utility model;

The three-dimensional exploded view of Fig. 2, the utility model and retarder and wheel hub;

Fig. 3, the schematic appearance when the utility model uses.

Embodiment

As Figure 1-3, a kind of overrunning clutch of wheel hub of electric bicycle comprises driving tooth 1 and driven tooth 2, and driving tooth 1 links by retarder and motor input shaft, and driven tooth 2 is fixed on the wheel hub; Have five fixed grooves 11 on the outer rim of described driving tooth 1, fixed groove is divided into block tongue fixed groove 111 and spring fixed groove 112, one block tongues 12 and spring 13 and is placed in respectively in the fixed groove 11, and spring 13 holds on the tongue body 121 of block tongue 12; Described driven tooth 2 is socketed on the driving tooth 1, also is provided with the latch 21 that matches with block tongue 12 at driven tooth 2 inner edges, and the recess between latch 21 and latch 21 is filled by abrasive rubber 22.

Driving tooth 1 of the present utility model is by on the bearing 31 socket main shafts 3, a connecting piece 4 and driving tooth 1 are fixed on the bearing 31 together, on connecting sheet 4, be provided with three mutual centrosymmetric carrier gears 41, gap bridge tooth 41 is socketed on the power tooth 51 of motor 5 rotors output, and gap bridge tooth 41 outsides also are meshed with the inboard deceleration tooth 52 that is provided with of motor 5 overcoats; And driven tooth 2 is fixed on the end cap 61 of wheel hub 6, and be socketed in driving tooth 1 on; Rotor 50 rotates during electric motor starting, drive three gap bridge teeth 41, three gap bridge teeth 41 and deceleration tooth 52 make up the retarder effect of playing together, deceleration by retarder is sent to power on the driving tooth 1, driving tooth 1 holds on the only tooth of driven tooth 2 by block tongue 12, is with driven tooth 2 and whole wheel hub 6 to rotate; When motor 5 slows down or stops, wheel hub 6 and driven tooth 2 are because under the action of inertia, rotating speed is greater than driving tooth 1, block tongue 12 meetings this moment are from latch 21 recess and move to latch 21 tops, fall to recess again suddenly, because the abrasive rubber 22 that recess is filled can play buffer function, when beaing, block tongue 12 sounds hardly, and wearing and tearing are also lighter when rotating simultaneously; When motor quickens again or starts, as long as block tongue 12 quantity and latch 21 quantity are not concerned at double, just have the latch 21 that one of them block tongue 21 holds driven tooth 2 very soon, drive driven tooth 2 and wheel hub 5 rotations, driving tooth 1 idle running distance is shortened dramatically.

Claims

1, a kind of overrunning clutch of wheel hub of electric bicycle comprises driving tooth and driven tooth, and driving tooth links by retarder and motor output shaft, and driven tooth is fixed on the wheel hub; It is characterized in that: have fixed groove on the outer rim of described driving tooth, fixed groove is divided into block tongue fixed groove and spring fixed groove, and a block tongue and spring are placed in respectively in the fixed groove, and spring holds on one's body the tongue of block tongue; Described driven tooth is socketed on the driving tooth, also is provided with the latch that matches with block tongue at the driven tooth inner edge, and the recess between latch and latch is filled by abrasive rubber.

2, the overrunning clutch of a kind of wheel hub of electric bicycle as claimed in claim 1 is characterized in that: the quantity of described block tongue fixed groove and spring fixed groove is five.