Rack-and-pinion intermediate output type diverter for vehicle

Abstract

The invention discloses a rack and pinion intermediate output steering gear for vehicles. The steering gear includes a gear connected to the steering wheel, a rack meshed with the gear, and a linkage mechanism connected to the wheels. Its structural feature is that it is also provided with a swing arm. The ball head at the lower end is located in the ball groove, the upper end of the swing arm is Y-shaped, and the two ball joints at the upper end are connected with the linkage mechanism; the part between the fulcrum of the swing arm and the ball head is divided into upper and lower sections, of which the lower section It is inserted into the upper section to form a telescopic structure; the fulcrum of the swing arm is a spherical surface, and a friction-reducing gasket without clearance is installed between the ball head and the ball groove; The ball joint of the arm, the tie rod, the ball joint of the tie rod, the trapezoidal rod, the ball joint of the trapezoidal rod, the steering knuckle are connected with the wheel in sequence. The invention has the advantages of simple structure, no need to open long rectangular holes, improved performance and high vehicle handling stability.

Description

technical field [0001] The invention relates to a vehicle steering system, in particular to a rack and pinion intermediate output steering gear for vehicles. Background technique [0002] The power output modes of the existing rack and pinion steering gears for vehicles are divided into three types: one-end output, two-end output and middle output, among which one-end output is mostly used for flat cars, and two-end output is widely used in various passenger cars. There are fewer intermediate output applications. [0003] see figure 1 , the output mode at both ends is close to the wheel because the breaking point of the short tie rod A is close to the wheel. When the wheel jumps up and down, the wheel alignment angle will change greatly, and it will have an adverse effect on the steering stability of the car. The middle output mode is because the breaking point of the long tie rod B is located on the longitudinal vertical symmetry plane of the car, that is, near the center...

AI Technical Summary

Problems solved by technology

But this structure is not widely used in automobiles. The reason is that the long tie rod B needs to be fixed to the rack with bolts and move synchronously with the rack. The rack is installed in the steering gear housing, and the long tie rod B is in Outside the steering gear housing, it is necessary to open a long rectangular hole on the housing. Generally, the length of the hole is more than 250mm and the width of the hole is about 30mm, which reduces the strength and rigidity of the steering gear housing.

In addition, although there is a dust cover, if the dust cover is damaged, the lubricating grease in the casing can still overflow from the opening, and dirt, muddy water and other dirt from the outside can easily penetrate into the steering wheel from these places. In the device, it will have an adverse effect on the working surface of some parts

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