Novel circulation ball type power steering gear screw shaft-torsion bar assembly
A technology of power steering gear and screw shaft, which is applied in mechanical steering gear and other directions to reduce the probability of card issuance, ensure coaxiality, and save materials.
Pending Publication Date: 2018-11-13
HUBEI TRI RING MOTOR STEERING GEAR
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[0003] According to the search, there is no patent application identical to the present invention in China
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[0015] The present invention will be further described by using the accompanying drawings and examples.
[0016] The screw shaft-torsion bar assembly of a novel recirculating ball type power steering gear of the present invention comprises a torsion bar (1), an O-ring (2), a driving pin (3), a screw shaft (4), and a fixing pin (5), Change the connection and fit between the screw shaft (4) and the torsion bar (1) from the tail of the small end of the screw shaft (4) to the large port, and the fit method is changed from interference fit to transition fit. On the torsion bar (1) It is equipped with a press-in guide part and a press-in force acting surface. After the torsion bar (1) is press-fitted into the screw shaft (4), drill and fix it at the axial middle position where the screw shaft (4) and the torsion bar (1) are connected. The installation through hole of the pin (5) is pressed into the fixed pin (5); the cooperation between the torsion bar (1) and the screw shaft (4) is...
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The invention discloses a novel circulation ball type power steering gear screw shaft-torsion bar assembly, and relates to the technical field of vehicle steering gears. The physical design of the steering gear assembly is improved, and therefore the connecting cooperating position of a screw shaft and a torsion bar is changed to the large end opening portion from a screw shaft small end tail portion, and the fitting mode is changed to transition fit from interference fit. A pressing-in and guide part and a pressing-in force acting surface are arranged at the torsion bar. An anti-seepage groove which is perpendicular to a screw shaft axis line is formed in the axial-directional middle position between the screw shaft outer circle and the connecting cooperating position of the screw shaft and the torsion bar. When the torsion bar is pressed and mounted in the screw shaft, a fixing pin installation through hole is drilled in the middle of the anti-seepage groove and a fixing pin is pressed and mounted. Through the improved physical design, the potential failure risk of the steering gear can be effectively avoided; the safety performance can be improved; the structure is simple, the performance is reliable, materials can be saved, and the cost can be lowered; and the length of the torsion bar can be shortened, machining accurate can be improved, product quality can be improved, and economic benefits are obvious. The novel circulation ball type power steering gear screw shaft-torsion bar assembly can be widely popularized and applied to all vehicle steering gear manufacturing enterprises.
Description
technical field [0001] The invention relates to the technical field of automobile steering gear, in particular to a novel recirculating ball type power steering gear screw shaft-torsion bar assembly. Background technique [0002] In recent years, with the rapid development of my country's automobile industry, zero defect within the three guarantee period has become the goal pursued by automobile steering gear suppliers. Steering gear is a safety component of automobiles, and our company attaches great importance to its quality. The structure of the existing 70 / 80 cylinder diameter recirculating ball power steering gear screw shaft-torsion bar assembly is as follows: figure 1 As shown, the assembly method of the screw shaft-torsion bar assembly is as follows: ①, first press the drive pin (3) into the screw shaft (4); ②, put the small end (seal groove end) of the torsion bar (1) into At the tail of the screw shaft, use a press to press the torsion bar into the screw shaft so...
Claims
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Login to View More IPC IPC(8): B62D3/06
CPCB62D3/06
Inventor 周红浪周波陈爽
Owner HUBEI TRI RING MOTOR STEERING GEAR