CN200939912Y

CN200939912Y - Protection mechanism for motor cycle engine crankcase

Info

Publication number: CN200939912Y
Application number: CN 200620063547
Authority: CN
Inventors: 石岩; 肖信濂; 王建中; 关超锋
Original assignee: Jiangmen Dachangjiang Group Co Ltd
Current assignee: Jiangmen Dachangjiang Group Co Ltd
Priority date: 2006-08-23
Filing date: 2006-08-23
Publication date: 2007-08-29
Anticipated expiration: 2016-08-23

Abstract

The utility model discloses a motorcycle engine crankcase protection apparatus, comprising a rear wheel shaft originating from the engine. The left crankcase wraps up the rear wheel shaft. An oil drainage hole is arranged on the bottom of the gear wheel box of the left crankcase. The protection baffle plate is arranged outside the oil drainage hole. On the one hand, the baffle plate can reduce the possibility that the sand or dust enter into the oil drainage hole, the more important is that the baffle plate can prevent the high pressure water flow enters into the oil drainage hole when washing the motorcycle, which avoids the sands and dust to enter into the right bearing of the real wheel shaft, so that the service life of the bearing is prolonged to ensure the normal operation of the wheel hub.

Description

A kind of crankshaft box of motorcycle engine protection mechanism

Technical field

The utility model relates to a kind of motor bike, particularly a kind of crankshaft box of motorcycle engine protection mechanism that changes left crankcase draining hole external structure.

Background technology

Usually the hind axle of motor bike is to link to each other with the wheel hub of trailing wheel after passing gear case again, in order to prevent that the oil in the gear case from entering wheel hub and influencing its normal operation along hind axle, usually between the hind axle right bearing of gear case and wheel hub front end, isolate with oil sealing, owing to consider that oil sealing may still have a small amount of oil to ooze out after frayed, so existing motor bike is generally by bottom the gear case that oil sealing and hind axle right bearing are installed, position between oil sealing and hind axle right bearing is offered the draining hole and is solved this problem, but through facts have proved, because this draining hole is uncovered, so motor bike can gather some dust or silt in its draining hole after use a period of time, and when we adopt the high pressure water carwash usually, hydraulic pressure can reach about 0.17 barometric pressure, these high pressure waters are easy to enter in the hind axle right bearing of wheel hub front end from the draining hole, thereby cause bearing lubrication bad, problem such as get rusty, and high pressure water also can also be brought into the silt at place, draining hole in the bearing, also can make bearing produce inordinate wear or bearing holdere damage, the serious bearing that also can cause breaks.

Summary of the invention

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of and prevents that sealing or silt are brought into because of high Pressure-washing apparatus in the hind axle right bearing of wheel hub front end, improves bearing service life, guarantees the crankshaft box of motorcycle engine protection mechanism of wheel hub normal operation.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of crankshaft box of motorcycle engine protection mechanism comprises being coated on the outer left crankcase of driving engine hind axle that the gear case bottom on the described left crankcase is provided with the draining hole, and external fixation has protection mechanism in described draining hole.

As the utility model preferred embodiment, described protection mechanism is an apron, leaves the gap between described apron and draining hole.

The beneficial effects of the utility model are: since the draining hole external fixation of the gear case bottom of the utility model on the motor cycle engine left crankcase protection mechanism, so can reduce the chance that dust or silt enter the draining hole on the one hand, the more important thing is and to prevent that High-Pressure Water directly impacts the draining hole when the high pressure water washing motor bike, thereby prevent that effectively High-Pressure Water from entering in the hind axle right bearing by the draining hole, and can avoid the silt outside the draining hole to be pressed in the hind axle right bearing to greatest extent, improve the service life of bearing, guaranteed the wheel hub normal operation; When leaving the gap between apron and the draining hole, can be when preventing water impact, also guaranteeing has enough spaces to result in blockage to avoid silt around the draining hole.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the perspective view of a kind of embodiment of the utility model;

Fig. 2 is Fig. 1 local structure cutaway views;

Fig. 3 is the another kind of apron structural representation of the utility model.

The specific embodiment

With reference to Fig. 1, Fig. 2, a kind of crankshaft box of motorcycle engine protection mechanism, comprise the left crankcase 2 that is coated on outside the driving engine hind axle 1, gear case 21 bottoms at left crankcase 2 are provided with draining

hole

3,3 external fixation have protection mechanism in the draining hole, and described protection mechanism is an apron 4, and the gap is left in 3 in apron 4 and draining hole, apron 4 sides are provided with through hole 41, and fixing by the bolt 8 of connection gear case lid 5 and left crankcase 2.

In the present embodiment, draining hole 3 is between the hind axle right bearing 6 of hind axle oil sealing 7 and wheel hub 9 front ends, apron 4 is a sheet member, it is having a through hole 41 near gear case cover one side, the bolt that is used for fixing gear case cover 5 and left crankcase 2 passes this through hole 41 simultaneously apron 4 is fixed on the gear case cover 5, and the edge of apron 4 is resisted against outside left crankcase 2 and the gear case cover 5 when installing, can limit the front that apron 4 is positioned at draining hole 3 all the time, thereby prevent that effectively high pressure water directly impacts draining hole 3 when high Pressure-washing apparatus, guaranteed the life-span of hind axle right bearing 6, certain interval is left in 3 in apron 4 and draining hole, this gap can guarantee around the draining hole 3 can supply water stream or the freely through space of sand and dust are arranged, and prevents obstruction.

In the present embodiment, the concrete form of protection mechanism also can have multiple, and the fixed form of apron 4 also can have multiple, accompanying drawing 3 and in conjunction with the accompanying drawings shown in 1 for example, and apron 4 can be fixed on left crankcase 2 sides; Perhaps establishing boss near draining hole 3 directly is fixed on the plane baffle plate on the boss again; Boss perhaps directly is set near draining hole 3, also can plays the effect of guar plate 4 etc.

Claims

1. crankshaft box of motorcycle engine protection mechanism, comprise and be coated on the outer left crankcase (2) of driving engine hind axle (1), gear case (21) bottom on the described left crankcase (2) is provided with draining hole (3), and it is waited to levy and is: external fixation has protection mechanism in described draining hole (3).

2. according to claim 1 described a kind of crankshaft box of motorcycle engine protection mechanism, it is characterized in that described protection mechanism is apron (4), leaves the gap between described apron (4) and draining hole (3).

3. according to claim 2 described a kind of crankshaft box of motorcycle engine protection mechanisms, it is characterized in that described apron (4) side is provided with through hole (41), and fixing by the bolt (8) of connection gear case lid (5) and left crankcase (2).