CN2732614Y

CN2732614Y - Reverse gear locking mechanism of motorcycle

Info

Publication number: CN2732614Y
Application number: CN 200420061221
Authority: CN
Inventors: 尹明善; 杜江; 辛琪
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2004-09-10
Filing date: 2004-09-10
Publication date: 2005-10-12
Anticipated expiration: 2014-09-10

Abstract

The utility model discloses a reverse gear locking mechanism of motorcycle, which is characterized in that the reverse gear locking mechanism 5 is composed of a lock case 8, an oil seal ring 9, a bayonet catch 10, a return spring 11, a plug 7, and a handle 6. Wherein, the return spring 11 and the oil seal ring 9 are sheathed on the bayonet catch10, and which are positioned in lock case 8. One end of the bayonet catch 10 extending outside the lock case 8 is arranged in the lock case, and the other end passing the plug 7 is fixedly connected in the handle6. The bolt part of the lower lock case 8 is connected with the screw 1 which is in the left crank shaft box of the engine; one end of the bayonet catch 10 extending the lock case 8 is inserted into the shift fork ring groove of the five-gear 4 positioned on the engine auxiliary shaft. The utility model can control the occasion of the engine to reverse, and prevents the drivers miss-operation from damaging the engine; or prevents the drivers from arising the accidents as the miss-operation make the engine slide into the reverse. The reverse gear locking mechanism of motorcycle has the advantages of simple structure, convenient operation, and agility; the utility model can not effect the motorcycle normal run.

Description

The motor bike reverse gear locking mechanism

Technical field

The utility model relates to a kind of motor cycle engine, especially the Reverse of Motorcycle Engine lockable mechanism.

Background technology

Gear reversing device is set on the motor cycle engine, helps improving the operation and the safety of motor bike.At present, the motor bike reverse gear is to realize by the gear shift transmission that driving engine internal speed-changing drum is controlled on main shaft, the countershaft.And variable speed drum is a kind of cylinder that has groove on circumference, its groove has smooth section, the deformation of unevenness section is also arranged, groove that is arranged in variable speed drum of in-engine shift fork, in the fork slot of an insertion transmission gear, when variable speed drum is rotated, the shift transmission of shift fork slip band moving gear in its groove.Existing motor bike all is the rotation of controlling variable speed drum by the chaufeur foot pedal, and the chaufeur pin is stepped on once, and the gear increasing or decreasing once.Though operation easily forms the chaufeur maloperation easily like this, usually is to step on two times more, does not just remember clearly and oneself stepped on how many times also do not known to be in what gear actually.Because the gear of Reverse of Motorcycle Engine is in proper order: reverse gear → neutral gear → 1 grade → 2 grades → grade 3 → 4 grades, 4 grades then → 3 grades → 2 grades → 1 grade → neutral gear → reverse gear; Therefore, motor bike is easy to occur the chaufeur maloperation and makes driving engine slip into reverse gear from neutral gear in the process of moving, and driving engine oppositely reverses suddenly, causes engine damage or personal safety accident.If can not rationally control reverse gear opportunity, just have hidden danger.

Summary of the invention

The purpose of this utility model provides and a kind ofly can prevent chaufeur when driving, because of maloperation slips into the Reverse of Motorcycle Engine lockable mechanism that reverse gear causes safety misadventure with driving engine.

Concrete scheme of the present utility model is: comprise driving engine left crankcase, engine countershaft, reverse gearwheel, five grades of gears and be threaded in reverse gear locking mechanism on the left crankcase, its invention main points are: reverse gear locking mechanism is made up of lock housing, oil seal washer, lock pin, pull back spring, plug, handle, wherein pull back spring and oil seal washer are sleeved on the lock pin, and be positioned at lock housing, one of the lock pin that is contained in the lock housing stretches out outside the lock housing, and the other end is passed plug and is fastenedly connected in handle; Stretch out the outer lock pin end of lock housing and stretch in the left crankcase, be inserted in the shifting fork annular of five grades of gears.

The utility model utilizes the shifting fork annular of five grades of gears on the former driving engine, lock pin by lockable mechanism inserts to be controlled five grades of gears in the shifting fork annular of five grades of gears and moves axially, and drives the reverse gearwheel rotation thereby retrain five grades of gears with the engagement of reverse gearwheel end face; Lock pin inserts the normal rotation that does not influence five grades of gears in the shifting fork annular simultaneously, and this lock pin only moves around annular groove in shifting fork annular.When the needs reverse gear, lock pin is withdrawed from the shifting fork annular of five grades of gears, five grades of gears slide to reverse gearwheel under original shift fork effect smoothly in driving engine, make driving engine finish reverse gear work.

The beneficial effects of the utility model are: can control driving engine reverse gear opportunity, effectively prevent chaufeur when driving, because maloperation slips into reverse gear with driving engine and causes engine breakdown or personal injury accident.It is simple in structure, and is easy to operate, flexible, does not influence the cruising of motor bike.

Description of drawings

Fig. 1 is the utility model lockup state structural representation;

Fig. 2 is the utility model open mode structural representation;

Fig. 3 is the constructional drawing of reverse gear locking mechanism 5 among Fig. 1.

The specific embodiment

Please see Figure 1, Fig. 2, Fig. 3, the utility model is by starting left crankcase 1, engine countershaft 2, reverse gearwheel 3, five grades of gears 4, reverse gear locking mechanism 5 is formed, wherein the driving engine left crankcase 1, countershaft 2 and be installed in reverse gearwheel 3 on the countershaft 2, five grades of gears 4 are identical with the prior art structure, the lockable mechanism 5 that different are mounted on the engine crankshaft casing 1 is by lock housing 8, oil seal washer 9, lock pin 10, pull back spring 11, plug 7, handle 6 is formed, wherein pull back spring 11 and oil seal washer 9 are sleeved on the lock pin 10, and be positioned at

lock housing

8,10 1 of lock pins that are contained in 8 li of lock housings stretch out outside the lock housing 8, and the other end is passed plug 7 and is fastenedly connected in handle 6 and (can adopts and be threaded); Stretch out lock housing 8 outer lock pin 10 ends and stretch in the left crankcase 1, insert in the shifting fork annular of five grades of gears 4.

In Fig. 1, Fig. 2, also have other transmission gear shift gear, they are sleeved on the countershaft 2, are positioned at a side of five grades of gears 4, and the opposite side of five grades of gears 4 is reverse gearwheels 3.The rotation of reverse gearwheel 3 is could realize that five grades of gears 4 will slide to reverse gearwheel 3 after being engaged with by five grades of gears 4, needs to finish by being inserted in five grades of stirring of shift fork in gear 4 shifting fork annular, and this shift fork is controlled by variable speed drum.Shifting fork annular on described variable speed drum, reverse gearwheel, five grades of gears, other transmission gear, the five grades of gears 4 and the shift fork in the driving engine are prior art, its structure and connecting relation and

Prior art is identical.

Can further see from Fig. 3: described lock housing 8 is that an end is the straight pipe of bolt arrangement, and this bolt part is threaded with driving engine left crankcase 1.Described plug 7 fastening lock housing 8 upper ends (can adopt to press-fit, make its interference fit) that are installed in, the internal diameter of this plug 7 are less than the internal diameter of lock housing 8, and handle 6 is placed in plug 7 tops.Described lock pin 10 is provided with two steps, and wherein a step is near the outlet of lock housing 8 lower ends, and the bottom that pull back spring 11, two steps are positioned at lock pin 10 is installed in another step top; Suit oil seal washer 9 between two steps helps oil seal washer and moves up and down with lock pin 10, has played the oil sealing effect.The external diameter of described step and pull back spring 11 is greater than the internal diameter of plug 7, and plug 7 just has position-limiting action like this, pull back spring 11 lock pin top bar and plug 7 between.

The utility model is work like this: under normal conditions, lock pin 10 is stretched in the engine housing 1, insert the shifting fork annular interior (as shown in Figure 1) of five grades of gears 4, prevent that the chaufeur maloperation from slipping into reverse gearwheel 3 with five grades of gears 4 to moving to left, the unexpected backwards rotation of driving engine is caused the accident.When motor bike needed reverse gear to travel, chaufeur must upwards be mentioned handle 6, and lock pin 10 and five grades of gears 4 are broken away from, and five grades of gears 4 on the countershaft can slip in the reverse gearwheel 3 smoothly like this, make driving engine finish reverse gear operation (as shown in Figure 2).

Claims

1. motor bike reverse gear locking mechanism, comprise driving engine left crankcase (1), engine countershaft (2), reverse gearwheel (3), five grades of gears (4) and be threaded in reverse gear locking mechanism (5) on the left crankcase (1), it is characterized in that: reverse gear locking mechanism (5) is by lock housing (8), oil seal washer (9), lock pin (10), pull back spring (11), plug (7), handle (6) is formed, wherein pull back spring (11) and oil seal washer (9) are sleeved on the lock pin (10), and be positioned at lock housing (8), (10) one of lock pins that are contained in lock housing (8) lining stretch out outside the lock housing (8), and the other end is passed plug (7) and is fastenedly connected in handle (6); Stretch out outer lock pin (10) end of lock housing (8) and stretch in the left crankcase (1), be inserted in the shifting fork annular of five grades of gears (4).

2. motor bike reverse gear locking mechanism according to claim 1 is characterized in that: described lock housing (8) is that an end is the straight pipe of bolt arrangement, and this bolt part is threaded with driving engine left crankcase (1).

3. motor bike reverse gear locking mechanism according to claim 1 and 2 is characterized in that: fastening lock housing (8) upper end that is installed in of plug (7), the internal diameter of described plug (7) is less than the internal diameter of lock housing (8).

4. motor bike reverse gear locking mechanism according to claim 3, it is characterized in that: lock pin (10) is provided with two steps, suit oil seal washer (9) between two steps, wherein a step is near the outlet of lock housing (8) lower end, and pull back spring (11) is installed in another step top; The external diameter of described step and pull back spring (11) is greater than the internal diameter of plug (7).