CN2211390Y

CN2211390Y - Bearing luminating structure of miniature vehicle rear axle assembly

Info

Publication number: CN2211390Y
Application number: CN 94213777
Authority: CN
Inventors: 胡红军; 晏家敦; 唐德才
Original assignee: CHANGJIANG ELECTROMECHANICAL GENERAL FACTORY SICHUAN PROV
Current assignee: CHANGJIANG ELECTROMECHANICAL GENERAL FACTORY SICHUAN PROV
Priority date: 1994-05-31
Filing date: 1994-05-31
Publication date: 1995-11-01
Anticipated expiration: 2004-05-31

Abstract

The utility model relates to a front bearing lubricating structure of a drive cone gear of a rear axle assembly of a miniature car. On the basis of the lubricating structure having an oil hole, the upper part of the front bearing is added with an oil hole for directly lubricating the front bearing; thus, the double-oil duct lubricating structure is formed, which reach sufficient lubricating condition to avoid the overheating ablation of the front bearing.

Description

Bearing luminating structure of miniature vehicle rear axle assembly

The utility model relates to the initiatively lubrication system of conical gear front bearing of a kind of vehicle rear axle assembly, when especially mid-get car is run at high speed, can guarantee that back axle assembly active conical gear front bearing has sufficient lubricating condition.

At present, various little car vehicle that each producer of the whole nation introduces, for back axle assembly initiatively the lubrication system of conical gear front bearing all be single oil duct.Lubricating oil rotates through driven bevel gear and is splashed on the retarder shell wall, and the oil duct on wall, oilhole flow then, flows into front bearing (see among Fig. 2 shown in the arrow) again through reducing gearbox bearing hole step rear end.After a lot of bother, the lubricating oil that flows to front bearing just seldom.And the front bearing roller of high speed revolution has formed shielding, and lubricating oil is run into roller, and quite a few has been by having been stopped, and the lubricating oil that can enter front bearing just still less.This structure, the lubricating condition that is provided are suitable for automobile at low speed and driving at moderate speed, but little car is when running at high speed on express highway, and lubricating condition is just abundant inadequately, even front bearing occurs and cross the thermal ablation accident.The original-pack back axle assembly of " Suzuki " automobile of Japan, front bearing also had the generation of thermal ablation accident.Domestic a few family little car back axle assembly originating firm all has front bearing ablation accident to occur.

The purpose of this utility model is to provide for little car back axle assembly a kind of lubrication system of utility model, ensures that front bearing also has sufficient lubricating condition, avoids the generation of thermal ablation accident when running at high speed.

The purpose of this utility model is achieved in that the oil leab with reducing gearbox extends to front bearing position (see figure 1), increases an oilhole 2, forms two oil duct lubrication systems with original oilhole 1.Rotate the lubricating oil that is splashed to reducing gearbox through driven bevel gear, when flowing to front bearing marble hole rear end step, become two-way: the first via flows into front bearing through former lubricated road oilhole 1, and this road is the lubrication system before improving; The second the tunnel then enters the top of front bearing from newly-increased oil leab hole 2, directly lubricated front bearing.Because the front bearing roller exposes outer ring 3mm, the second road lubricating oil that then increases newly can flow directly into the front bearing raceway, forms lubricating condition preferably, reaches the purpose of avoiding front bearing ablation locking.

Owing to adopt such scheme, can guarantee that little car back axle assembly front bearing has sufficient lubricating condition when middling speed and low speed driving, also can guarantee to have sufficient lubricating condition when running at high speed.Reducing gearbox increases an oil passage, and is simple in structure, implements easily.

Below, with embodiment the utility model is further specified in conjunction with the accompanying drawings:

Fig. 1 is the rear-end gear reduction assembly figure that improves the lubricated front bearing of the two oil ducts in back.

Fig. 2 is the back axle assembly main gearbox assembly figure of the lubricated front bearing of single oil duct before improving.

Fig. 3 is the two oil duct cutaway views of reducing gearbox.

Among the figure: 1, oilhole; 2, oilhole; 3, reducing gearbox; 4, driven bevel gear; 5, front bearing (7204); 6, active conical gear; 7, back axle assembly main gearbox assembly.

In Fig. 1, oilhole 1 and oil 2 are arranged on the reducing gearbox 3, lubricating oil is splashed on the wall of reducing gearbox 3 with driven conical gear 4 rotations, flows into front bearing 5, lubricate along the arrow route through oilhole 1.Simultaneously, lubricating oil directly lubricates front bearing 5 along the top of arrow route through oilhole 2 inflow front bearings 5.Like this, form the lubricated front bearing 5 of two oil ducts.

In Fig. 3, oilhole 1 and oilhole 2 are formed two oil duct lubrication systems.

Claims

1, mid-get car back axle assembly active garden finishing bevel gear cuter front bearing lubrication system is characterized in that: the former oil leab of reducing gearbox is extended to the front bearing position, increase an oilhole 2, form two oil duct lubrication systems with original oilhole 1.