CN201736802U - Power transmission device on motorcycle - Google Patents

Abstract

The utility model provides a power transmission device on a motorcycle, which belongs to the technical field of motorcycles. It solves the problem that the installation position of the existing overrunning clutch is unreasonable. The power transmission device on the motorcycle includes a crankshaft, an intermediate shaft, a rear wheel shaft arranged at the oil return hole of the cylinder head of the motorcycle, and a driving clutch which is arranged on the first connecting end of the crankshaft. The crankshaft and the intermediate shaft are arranged in parallel and pass through The sprocket pair is connected, the intermediate shaft is set parallel to the rear wheel shaft and connected through the transmission part, the second connecting end of the crankshaft is used to connect with the power mechanism, and the first connecting end of the crankshaft is also pierced with an overrunning wheel located inside the driving clutch. Clutch, the overrunning clutch leans against the oil return hole. The utility model has the advantages of good lubricating effect, long service life and the like.

Description

Power transmission on a motorcycle

technical field

The utility model belongs to the technical field of motorcycles, and relates to a transmission device, in particular to a power transmission device on a motorcycle.

Background technique

Motorcycle overrunning clutch, also known as electric starter clutch and one-way clutch, is an important part in the electric starter motorcycle engine. It is divided into a starting gear and a housing, and when the two are together, they are called an overrunning clutch assembly. Normally, its central inner ring is connected to the starter motor in the engine, and the housing is connected to the crankshaft of the engine. When the engine starts, the starter motor drives the overrunning clutch to rotate at high speed, generating a very large force, which drives the crankshaft to reciprocate , so that the engine piston works. Therefore, the overrunning clutch is an important part in the electric starter motorcycle.

For example, a Chinese patent discloses a sprocket assembly with an overrunning clutch for a motorcycle [authorized announcement number is: CN2374390Y], which is installed with an overrunning sprocket in the inner hole of the driven sprocket in the drive sprocket combination pair. clutch. When the motorcycle engine slides downhill at a fast speed, it will not drag backwards, which can reduce the consumption of oil and reduce the wear and tear on the components of the transmission system. When the accelerator suddenly changes from large to small, the coasting is comfortable and there will be no obvious braking feeling.

But the installation position of the overrunning clutch in the above structure is unreasonable. The specific performance is: in order to reduce the harm of the dust brought by the belt to the overrunning clutch, it arranges the overrunning clutch and the driving clutch separately, but this arrangement of the overrunning clutch cannot make the overrunning clutch get sufficient lubrication, and it is necessary to overrun the clutch. It is extremely inconvenient when the clutch is overinstalled and maintained. Therefore, the installation position of the overrunning clutch in the above structure is unreasonable.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose a power transmission device on a motorcycle that can make the overrunning clutch have a good lubricating effect and a long service life.

The purpose of this utility model can be achieved through the following technical solutions:

The power transmission device on the motorcycle includes a crankshaft arranged at the oil return hole of the cylinder head of the motorcycle, an intermediate shaft, a rear wheel shaft, and a drive clutch that passes through the first connecting end of the crankshaft, and the crankshaft is parallel to the intermediate shaft Set and connected by a sprocket pair, the intermediate shaft is arranged parallel to the rear wheel shaft and connected through a transmission member, the second connection end of the crankshaft is used to connect with the power mechanism, and it is characterized in that the second connection end of the crankshaft An overrunning clutch located inside the driving clutch is also pierced on one connection end, and the overrunning clutch abuts against the above-mentioned oil return hole.

In the power transmission device on the motorcycle, the overrunning clutch is arranged at the oil return hole, and the overrunning clutch can be well lubricated when the cylinder head returns oil, thereby improving the service life of the overrunning clutch. The transmission member provided here is a gear, and according to specific conditions, the transmission member provided here also can be a belt. When the crankshaft rotates, the rotation of the intermediate shaft is driven by the sprocket pair, and the rotation of the rear axle can be driven when the intermediate shaft rotates.

In the above-mentioned power transmission device on the motorcycle, the first connecting end of the crankshaft is also pierced with a dust cover that can prevent dust from entering the overrunning clutch, and the dust cover is located between the driving clutch and the overrunning clutch. between and against the overrunning clutch.

The function of the dust cover provided here is mainly to prevent dust from entering the overrunning clutch, which affects the cleaning of the overrunning clutch. Specifically, the shape of the dustproof cover is similar to that of the overrunning clutch, and its size is larger than that of the overrunning clutch, and the dustproof cover is fixed by the fixing piece. The dust cover set here is more convenient to disassemble and install, so the disassembly and installation of the overrunning clutch is also more convenient, and it also prevents dust from entering the overrunning clutch, ensuring the cleanliness of the overrunning clutch and prolonging the use of the overrunning clutch life.

In the above-mentioned power transmission device on the motorcycle, the power mechanism is a driving motor.

Compared with the prior art, the power transmission device on this motorcycle has the following advantages:

1. Set the overrunning clutch at the oil return hole. When the cylinder head is returning oil, it can lubricate the overrunning clutch well, which improves the service life of the overrunning clutch.

2. In this structure, the dust-proof cover is used to cover the overrunning clutch, which prevents dust from entering into the overrunning clutch, ensures the cleanliness of the overrunning clutch, and prolongs the service life of the overrunning clutch.

Description of drawings

Fig. 1 is a structural schematic diagram of the power transmission device on the motorcycle.

In the figure, 1, crankshaft; 11, first connecting end; 12, second connecting end; 2, intermediate shaft; 3, rear axle; 4, driving clutch; 5, sprocket pair; 6, overrunning clutch; 7, anti Dust cover; 8. Oil return hole.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, the power transmission device on the motorcycle includes a crankshaft 1, an intermediate shaft 2, a rear wheel shaft 3 arranged at the oil return hole 8 of the cylinder head of the motorcycle, and a first connecting end 11 of the crankshaft 1 The driving clutch 4, and the overrunning clutch 6 passing through the first connecting end 11 of the crankshaft 1. The second connecting end 12 of the crankshaft 1 is used for connecting with a power mechanism, where the power mechanism is a drive motor.

Specifically, the crankshaft 1 and the intermediate shaft 2 are arranged in parallel and are connected by a sprocket pair 5. When the crankshaft 1 rotates, the rotation of the intermediate shaft 2 can be driven by the sprocket pair 5; Connected, when the intermediate shaft 2 rotates, the rotation of the rear wheel shaft 3 can be driven by the connecting piece. The transmission piece here is a gear. According to specific conditions, the transmission piece set here can also be a belt.

In order to lubricate the overrunning clutch 6 better, the overrunning clutch 6 is arranged inside the drive clutch 4 and abuts against the oil return hole 8 of the cylinder head. Arranged in this way, the oil return in the oil return hole 8 of the cylinder head can be fully utilized to lubricate the overrunning clutch 6 without adding other lubricating devices, which simplifies the structure of the whole transmission device. When the overrunning clutch 6 is well lubricated, the service life becomes longer.

In the power transmission device on the motorcycle, in order to prevent dust from entering the overrunning clutch 6, the first connecting end 11 of the crankshaft 1 is pierced with a dust cover 7 that can prevent dust from entering the overrunning clutch 6, and the dust cover 7 It is located between the driving clutch 4 and the overrunning clutch and abuts against the overrunning clutch 6 . The shape of the dust cover 7 provided here is similar to the shape of the overrunning clutch 6, and its size is slightly larger than the overrunning clutch 6, and the dust cover 7 is fixed by the fixing member. The disassembly and installation of the dust cover 7 are more convenient, so the disassembly and installation of the overrunning clutch 6 are also more convenient, and it also prevents dust from entering the overrunning clutch 6, ensuring the cleanliness of the overrunning clutch 6 and prolonging the life of the overrunning clutch 6. service life.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although the crankshaft 1, the first connection end 11, the second connection end 12, the intermediate shaft 2, the rear axle 3, the driving clutch 4, the sprocket pair 5, the overrunning clutch 6, the dust cover 7, the oil return Hole 8 and other terms, but does not exclude the possibility of using other terms. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (3)

1. the power drive on the motor bike, comprise and be arranged at the bent axle (1) that cylinder head of motorcycle fuel return hole (8) is located, tween drive shaft (2), hind axle (3) and be located in driving power-transfer clutch (4) on bent axle (1) first coupling end (11), described bent axle (1) be arranged in parallel with tween drive shaft (2) and is connected by chain wheel pair (5), described tween drive shaft (2) be arranged in parallel with hind axle (3) and is connected by Transmission, second coupling end (12) of described bent axle (1) is used for being connected with actuating unit, it is characterized in that, also be equipped with the overriding clutch (6) that is positioned at driving power-transfer clutch (4) inboard on first coupling end (11) of described bent axle (1), described overriding clutch (6) is resisted against above-mentioned fuel return hole (8) and locates.

2. the power drive on the motor bike according to claim 1, it is characterized in that, also be equipped with on first coupling end (11) of described bent axle (1) and can prevent that dust from entering the cover of dust of overriding clutch (6) (7), described cover of dust (7) is positioned at and drives power-transfer clutch (4) and be more than between the power-transfer clutch and be resisted against on the overriding clutch (6).

3. the power drive on the motor bike according to claim 1 and 2 is characterized in that, described actuating unit is a drive motor.

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