CN202123897U

CN202123897U - Half axle assembly structure for rear drive axle of minicar

Info

Publication number: CN202123897U
Application number: CN2011201716913U
Authority: CN
Inventors: 赵鹏; 杨忠学; 洪桓桓; 何为; 李永放
Original assignee: JIAN'AN REAR AXLE AUTOMOBILE CO Ltd CHINA CHANG'AN SICHUAN BRANCH
Current assignee: Jianan Industry Co., Ltd., Sichuan Prov.
Priority date: 2011-05-26
Filing date: 2011-05-26
Publication date: 2012-01-25
Anticipated expiration: 2021-05-26

Abstract

The utility model discloses a half axle assembly structure for a rear drive axle of a minicar. By adopting the half axle assembly structure, the bearing capacity of a half axle bearing can be strengthened with lower cost and without changing the installing size of a rear axle brake bottom plate and the road clearance of the whole vehicle. The half axle assembly structure comprises a half axle, a half axle bearing and a connecting disc with a stepped inner hole, wherein a lager hole of the inner stepped hole is a bearing seat hole of the half axle, a brake bottom plate is arranged at the outer end of the bearing seat hole, a half axle bearing cover is arranged at the outer side of the brake bottom plate, a double row angular contact ball bearing is adopted as a half axle bearing, the depth of the bearing seat hole is correspondingly increased, and an external circular step is additionally arranged at a corresponding position of the external circle of the connecting disc according to the depth of the half axle bearing seat hole. By adopting the half axle assembly structure, the rear drive axle assembly with higher bearing capacity is designed with less investment and shorter development cycle on the basis of maximum utilization of components and parts of original vehicle types; meanwhile, the service life of the half axle bearing is prolonged, and the fault rate of damaging the half axle bearing is reduced, thereby meeting the use requirement of the minicar.

Description

Little car rear driving axle semiaxis mounting structure

Technical field

The utility model relates to the automobile rear driving axle and manufactures and designs the field, especially a kind of little car rear driving axle semiaxis mounting structure.

Background technology

At present, along with the improvement of road, in conjunction with the domestic and international market demand, each little car manufacturer releases the stronger and bigger novel little car of load-carrying capacity of dynamic property one after another.And in the design of little car rear driving axle, because of influenced by the car load ground Clearance and brake support plate parts spatial destribution limits, simply pass through the mentality of designing that increase deep groove ball bearing model improves the axle bearing load-carrying capacity; Can not satisfy car load to the back axle demands for bearing capacity; Axle bearing is if adopt tapered roller bearing, and whole back bridge construction is complicated, and cost is higher; And need the adjust a bearing end-play during assembling; Assembly difficulty is big, and efficient is low, can't adapt to the characteristics such as low cost, high efficiency in domestic little car field.

Based on above developing background and present little car back axle the fact at the axle bearing well damage of market feedback; Structural machinability according to machine design requires and the economy requirement; As how more low-cost, shorter time-to-market strengthens the axle bearing load-carrying capacity; Thereby improve axle bearing service life, reduce the fault rate that axle bearing damages, become a practical problems of little car rear driving axle design field.

The utility model content

In order to overcome the deficiency of existing little car rear driving axle axle bearing well damage; The utility model technical matters to be solved provides a kind of on the basis that does not change the requirement of back axle brake support plate installation dimension and car load ground Clearance; Low-cost with more, little car rear driving axle semiaxis mounting structure of enhancing axle bearing load-carrying capacity.

The utility model solves the technical scheme that its technical matters adopted: little car rear driving axle semiaxis mounting structure; Comprise semiaxis and axle bearing, and the terminal pad with ladder endoporus, the macropore of said ladder endoporus is axle bearing seat hole; The bearing saddle bore outer end is a brake support plate; The brake support plate outside is the axle bearing lid, and said axle bearing adopts double-row angular contact bal bearing, the degree of depth in corresponding increase axle bearing seat hole.

According to the degree of depth in axle bearing seat hole, increase the cylindrical step in the relevant position of the cylindrical of said terminal pad.

The beneficial effect of the utility model is: on existing little car back axle architecture basics, and to the difference of little car design parameters, the increase of the fully loaded axle load of particularly little car; Use in maximization on the basis of original vehicle parts, with input still less, shorter time-to-market; Designed the more rear driving axle assembly of high bearing capacity; Improve axle bearing service life simultaneously, reduced the fault rate that axle bearing damages, thereby satisfied the operating needs of little car.

Description of drawings

Fig. 1 is the scheme drawing of the utility model structure.

Fig. 2 is the front view of the terminal pad of existing little car rear driving axle semiaxis mounting structure.

Fig. 3 is that cutaway view is looked on the right side of Fig. 2.

Fig. 4 is the front view that increases the terminal pad after the axle bearing model in existing little car rear driving axle semiaxis mounting structure.

Fig. 5 is that cutaway view is looked on the right side of Fig. 4.

Fig. 6 is in little car rear driving axle semiaxis mounting structure of the utility model, the front view of the terminal pad when axle bearing adopts double-row angular contact bal bearing.

Fig. 7 is that cutaway view is looked on the right side of Fig. 6.

Be labeled as 1-axle bearing lid, 2-brake support plate, 3-axle bearing, 4-terminal pad, 5-ladder endoporus, 6-semiaxis, 7-terminal pad mounting hole, 8-cylindrical step, D1, L1 among the figure; D2, L2; D3, L3 be respectively adopt deep groove ball bearing, increase model deep groove ball bearing and identical with deep groove ball bearing in the diameter and the degree of depth in axle bearing seat hole during the double-row angular contact bal bearing of external diameter, D2＞D1=D3 wherein, L3＞L2＞L1.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the scheme drawing of little car rear driving axle semiaxis mounting structure.

Fig. 2 and Fig. 3 are the constructionals drawing of the terminal pad of existing little car rear driving axle semiaxis mounting structure.

Fig. 4 and Fig. 5 are the constructionals drawing that increases the terminal pad after the axle bearing model in existing little car rear driving axle semiaxis mounting structure.

Fig. 6 and Fig. 7 are the constructionals drawing that axle bearing is used the terminal pad behind the double-row angular contact bal bearing instead in existing little car rear driving axle semiaxis mounting structure.

Like Fig. 1, Fig. 6 and shown in Figure 7; Little car rear driving axle semiaxis mounting structure of the utility model comprises semiaxis 6 and axle bearing 3, and the terminal pad 4 with ladder endoporus 5, and the macropore of said ladder endoporus 5 is axle bearing seat hole; Axle bearing seat outer end of hole is a brake support plate 2; Brake support plate 2 outsides are axle bearing lid 1, and said axle bearing 3 adopts double-row angular contact bal bearing, the degree of depth in corresponding increase axle bearing seat hole.

Can know by above each figure; Double-row angular contact bal bearing with external diameter in identical substitutes the axle bearing 3 of deep groove ball bearing as back axle; Only need retrofit to terminal pad 4; The degree of depth in corresponding increase axle bearing seat hole gets final product, and can farthest use original vehicle parts, improves the load-carrying capacity of axle bearing 3 simultaneously.If by original mentality of designing; Improve load-carrying capacity through increasing the deep groove ball bearing model; Need to increase the diameter in axle bearing seat hole, need increase the position dimension of the mounting hole on brake support plate 2 and the terminal pad 4 simultaneously, make troubles for the parts layout on the brake support plate 2; Even possibly need increase brake support plate 2 sizes, and with other related components of its assembling as braking the size of event, wheel rim, wheel etc.

As shown in Figure 7, according to the degree of depth in axle bearing seat hole, increase cylindrical step 8 in the relevant position of the cylindrical of said terminal pad 4, at the satisfactory installing space of practicing thrift terminal pad 4 simultaneously of intensity that guarantees terminal pad 4.

Embodiment:

Certain little car back axle adopts double-row angular contact bal bearing 3207A as axle bearing, compares with the deep groove ball bearing 6207 in inside and outside footpath with employing, and its dynamic load rating increases 10KN approximately; This has just improved bearing service life greatly; Reduce the fault rate that axle bearing damages, and back axle is at manufacturing and fit on and deep groove ball bearing no change, maximizing is sent out and is used original vehicle parts; Less investment, time-to-market is short.

Claims

1. little car rear driving axle semiaxis mounting structure; Comprise semiaxis (6) and axle bearing (3), and the terminal pad (4) with ladder endoporus (5), the macropore of said ladder endoporus (5) is axle bearing seat hole; Axle bearing seat outer end of hole is brake support plate (2); Brake support plate (2) outside is axle bearing lid (1), it is characterized in that: said axle bearing (3) adopts double-row angular contact bal bearing, the degree of depth in corresponding increase axle bearing seat hole.

2. little car rear driving axle semiaxis mounting structure as claimed in claim 1 is characterized in that: according to the degree of depth in axle bearing seat hole, increase cylindrical step (8) in the relevant position of the cylindrical of said terminal pad (4).