CN2189667Y - Motor-cycle chain with clutch device - Google Patents

Abstract

The utility model discloses a motorcycle driven chain wheel with a clutch device. The utility model is characterized in that the upper side of the inner circle of an outer chain wheel 1 is provided with at least four symmetrical wedge openings. The inner circle of the outer chain wheel is provided with an inner disk 2. The inner part of a radical slot which is arranged on the inner disk is provided with keys 3 which are matched with the wedge openings, and the tail part of each key is provided with a compression spring 4. Both ends of the outer chain wheel and both ends of the inner disk are respectively provided with a blocking cover which is fixed by screws 7 and positioned in an axial way. The inner disk is fixed on the rear wheel shaft of the motorcycle by bolts through a fixing hole 6 which is arranged on the inner disk. The utility model has the advantage that the safety performance of the motorcycle can be improved effectively.

Description

Motor-cycle chain with clutch device

The utility model relates to the motorcycle transmission device, exactly is a kind of chain wheel of motorcycle with engaging and disengaging gear.

The motorcycle driven sprocket of prior art when the motorcycle cylinder that rises in the process of moving, falls chain suddenly and emergency episode such as blocks, and overturn accident very easily takes place.In addition, to certain speed, when reducing throttle and sliding, chain still drives the high engine speeds running that has slowed down under the effect of driven sprocket, cause power and transmission system abrasion to increase, and has shortened the life-span of motor at motorcycle driving.And because internal drag is bigger, fuel consume is also bigger.

The purpose of this utility model is the deficiency that overcomes existing motorcycle driven sprocket, and a kind of increase motorcycle safety rideability is provided, and increases the service life and fuel-efficient motorcycle driven sprocket with engaging and disengaging gear.

The purpose of this utility model is achieved in that the rear axle driven sprocket place at motorcycle, fixedly mounts the driven sprocket with engaging and disengaging gear.This sprocket wheel has an outer-tooth disc, has the open wedge groove of four symmetries at least at the inner ring of outer-tooth disc.Inner ring at outer-tooth disc is equipped with an inner disc, and the key corresponding with the wedge slot number that radially have of the excircle of this inner disc cooperates with the open wedge of outer-tooth disc inner ring, at the afterbody of each key a pressure spring is arranged.Inner ring is fixed on the rear axle, and outer-tooth disc and inner disc are fastening by retaining screw by the door that two external diameters are slightly larger than the inner ring external diameter, and key and wedge slot have constituted a free wheel device like this.It promptly is the chain wheel of motorcycle with engaging and disengaging gear of the present utility model.

The utility model has the advantages that, when aforementioned burst accident takes place motorcycle,, increased the Safety performance of motorcycle because the effect of free wheel device is unlikely to take place overturn accident.In addition, when the motorcycle free sliding, the free wheel device that driven sprocket drives inner ring rotates, motor rotates with lower speed, alleviate the abrasion and the resistance of motor and gear, thereby prolonged the working life of motor, and can save 10%～40% fuel oil.

Description of drawings, accompanying drawing 1 are the plan views of removing the structure of a side door, and accompanying drawing 2 is plan views of Fig. 1.Each sequence number in the accompanying drawings is: 1 outer-tooth disc, 2 inner discs, 3 keys, 4 pressure springs, 5 doors, 6 fixed holes, 7 door screws.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

With reference to accompanying drawing, the outer ring of outer-tooth disc 1 is sprocket (being also referred to as " tooth "), and inner ring is the shell of the free wheel device of an open wedge groove with at least four symmetries, and inner disc 2 is contained in the inner ring of outer-tooth disc 1, Spielpassung.Have on inner disc 2 excircles with outer-tooth disc on the corresponding radially slotted eye of open wedge, the key 3 that cooperates with open wedge on the outer-tooth disc is housed in slotted eye, the afterbody of each key all has a pressure spring 4, like this, key 3, pressure spring 4 and inner disc 2 and outer-tooth disc 1 have constituted a free wheel device.Inner disc 2 is fixed on the rear-wheel spindle of motorcycle by fixed hole 6.Inner disc 2 and outer-tooth disc 1 are axially located by door screw 7 fixing backs by two doors 5.Its working procedure is, when engine operation, power is by chain, outer-tooth disc, and key and inner disc reach rear-wheel spindle by the bolt in the fixed hole on the inner disc at last, drive the back and rotate motorcycle driving.Emergency appears in travelling, for example, the motor cylinder that rises, at this moment, the unexpected stop motion of chain, and trailing wheel high speed rotating under effect of inertia still, driving inner disc together rotates, but this moment, key separated (being so-called surmounting) with the open wedge groove, and was unlikely to produce to block suddenly to cause overturn accident.

Claims (1)

1, a kind of chain wheel of motorcycle with engaging and disengaging gear, the interior circle that it is characterized in that outer-tooth disc 1 has the open wedge of four symmetries at least, assemble an inner disc 2 within it, key 3 in the radially slotted eye of inner disc 2 cooperates with open wedge on the interior circle of outer-tooth disc, the afterbody of each key has a pressure spring 4, inner disc 2 and outer-tooth disc 1 axially by two doors 5 by door screw 7 stationary positioned.

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