CN201235710Y - Bracket half axle assembly in multi-link lever type rear suspension system - Google Patents

Abstract

The utility model relates to a support half shaft assembly in a multi-link rear suspension system, which mainly comprises a rear support, a rear half shaft, a rubber bushing 1 and a rubber bushing 2, wherein the rear support is provided with a shock absorber mounting hole, the rear half shaft is provided with a bearing mounting surface, the rear support and the rear half shaft both adopt a straight pressing-in structure, the rear half shaft and the rear support adopt an interference fit way, and the diameter of a matching hole of the rear half shaft and the rear support is more than the diameter of the bearing mounting diameter of the rear half shaft. The utility model has the advantages that: firstly, the rear half shaft adopts a straight pressing-in structure and removes the taper fitting, the support half shaft assembly has simple structure, reduces the difficulty of the processing technique, can effectively shorten the time of the processing procedure of the processing technique and improves the efficiency; secondly, welded nuts and the welding procedure are removed, so the manufacture cost can be effectively lowered; thirdly, a bearing retaining ring is changed to be arranged on the rear support from the rear half shaft, so the processing difficulty of the half shaft is reduced, and the precision requirements after the bearing is pressed in is improved; fourthly, the pressing-in half shaft is adopted, so the assembly difficulty is lowered.

Description

Bracket half shaft assembly in a multi-link rear suspension system

technical field

The utility model relates to the field of rear suspension systems, in particular to a bracket half shaft assembly in a multi-link rear suspension system.

Background technique

The current rear bracket half shaft assembly is shown in Figure 1, mainly including rear bracket 1, rear half shaft 2, rubber bushing I3, rubber bushing II4 and welding nut 5, this structure is applied to the multi-link rear suspension Frame assembly, rubber bushing I3 is connected to the double link, rubber bushing II4 is connected to the rear thrust rod, the rear bracket 1 and the rear half shaft 2 adopt taper fit, the welding nut 5 is locked and fixed, the taper fit contact surface theory is above 75% , need to carry out welding after welding nut 5 is locked, prevents half axle from getting loose. Disadvantages of the existing structure: 1. The rear half shaft 2 and the rear bracket 1 adopt taper fit, the processing of the rear bracket 1 and the rear half shaft 2 is difficult to control, and the mating contact surface must be more than 75%; 2. The taper fit is difficult to ensure the coaxiality Requirements; 3. The taper fit between rear bracket 1 and rear half shaft 2 needs to be welded after locking with welding nuts. The assembly process is complicated and the welding strength is difficult to guarantee; 4. It is difficult to control the accuracy of the bearing after the bearing is pressed on the half shaft. Requirements; 5. The structure is complex and the manufacturing cost is high.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned shortcomings of the prior art, and provide a bracket half shaft assembly in a multi-link rear suspension system.

The technical scheme adopted by the utility model to solve its technical problems: the support half shaft assembly in the multi-link rear suspension system mainly includes the rear support, the rear half shaft, rubber bush I and rubber bush II, and the rear support There is a shock absorber mounting hole on the top, and a bearing mounting surface is provided on the rear half shaft. The rear bracket and the rear half shaft adopt a straight hole press-fit structure, and there is an interference fit between the rear half shaft and the rear bracket. The diameter size of the half shaft and the rear bracket matching hole is larger than the bearing installation diameter size of the rear half shaft.

The rear bracket is installed on the rear half shaft, and a bearing stop is formed on the end surface of the rear bracket.

The beneficial effects of the utility model are: 1. The rear half shaft adopts the straight hole press-in type, cancels the taper fit, has a simple structure, reduces the difficulty of the processing technology, can effectively shorten the process time of the process, and improves the efficiency; 2. Cancels the welding nut, The welding process can effectively reduce the manufacturing cost; 3. The bearing block is transferred from the original half shaft to the rear bracket, which reduces the processing difficulty of the half shaft and improves the accuracy requirements after the bearing is pressed in; 4. Adopts press in Type half shaft reduces the difficulty of assembly.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of the prior art;

Fig. 2 is a schematic diagram of the main view structure of the utility model;

Explanation of reference signs: rear bracket 1, rear axle shaft 2, rubber bushing I3, rubber bushing II4, welding nut 5, shock absorber mounting hole 6, bearing mounting surface 7, bearing stopper 8.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 2, the bracket half shaft assembly in this multi-link rear suspension system mainly includes rear bracket 1, rear half shaft 2, rubber bush I3 and rubber bush II4, and rear bracket 1 is provided with The shock absorber mounting hole 6, the rear half shaft 2 is provided with a bearing mounting surface 7, the rear support 1 is installed on the rear half shaft 2, and a bearing block 8 is formed on the rear support 1 end face. The rear bracket 1 and the rear half shaft 2 adopt a straight hole press-fit structure, the rear half shaft 2 and the rear bracket 1 are in an interference fit, and the diameter of the matching hole between the rear half shaft 2 and the rear bracket 1 is larger than that of the rear half shaft. Bearing installation diameter dimension for axis 2.

The structure of this utility patent is applied to the multi-link rear suspension assembly, the rubber bush I3 is connected to the double link, and the rubber bush II4 is connected to the rear thrust rod; the rear bracket 1 and the rear axle 3 adopt a press-in structure , is controlled by the interference fit between the half shaft and the rear bracket; the diameter of the matching hole between the rear half shaft 2 and the rear bracket 1 is larger than the diameter of the bearing installation of the rear half shaft, and the bearing installation will not be damaged during the press-in process surface; after the bearing is pressed in, the press-fit position of the bearing is controlled by the end surface of the rear bracket.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (2)

1, a kind of many link-types rear-suspension system medium-height trestle semiaxis assembly, mainly comprise after poppet (1), half-rear axle (2), rubber bush I (3) and rubber bush II (4), after poppet (1) is provided with bumper mounting hole (6), half-rear axle (2) is provided with bearing installation face (7), it is characterized in that: described after poppet (1) and half-rear axle (2) adopt the forced structure of straight hole, be interference fit between half-rear axle (2) and the after poppet (1), the diameter dimension of half-rear axle (2) and after poppet (1) mating holes is greater than the bearing installation diameter dimension of half-rear axle (2).

2, many link-types rear-suspension system medium-height trestle semiaxis assembly according to claim 1, it is characterized in that: described after poppet (1) is installed on the half-rear axle (2), forms bearing retaining (8) at after poppet (1) end face.

Images