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An assembly structure and assembly method of a double-assist mechanism of a recirculating ball steering gear

An assembly method and steering gear technology, applied to steering mechanisms, electric steering mechanisms, power steering mechanisms, etc., can solve the problems of metal worm gears with large noise, inability to carry large torque, and single structural form, so as to meet the requirements of vehicle assembly and Clearance requirements, reduced output torque requirements, and reduced motor dimensions

Active Publication Date: 2022-04-01
HUBEI HENGLONG AUTOMOTIVE SYST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the deceleration mechanism used in the electric steering gear commonly used in vehicles is a conventional one-stage worm gear deceleration mechanism. Due to the large noise and low efficiency of the metal worm gear, the worm gear generally uses nylon material with high efficiency and low noise. The worm is made of metal material, but nylon Due to the strength of the material, it cannot carry a large torque. The output torque of this electric steering gear can basically only meet the output torque requirements of light truck commercial vehicles, and cannot meet the torque output requirements of medium and heavy commercial vehicles; on the other hand, due to The structure of the deceleration mechanism used in the existing electric steering gear is single, and often interferes with the outer space of the vehicle, which is difficult to meet the assembly and clearance requirements of different customers. Therefore, it is necessary to improve it

Method used

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  • An assembly structure and assembly method of a double-assist mechanism of a recirculating ball steering gear
  • An assembly structure and assembly method of a double-assist mechanism of a recirculating ball steering gear
  • An assembly structure and assembly method of a double-assist mechanism of a recirculating ball steering gear

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, booster A and booster B are respectively arranged at both ends of the global steering gear;

[0038]First, the input shaft 10, the torsion bar 9, the steering screw 11, and the cylindrical pin 8 of the dual power-assisted mechanism of the recirculating ball steering gear are fixedly assembled into a steering screw assembly. The dual booster mechanism of the recirculating ball steering gear includes the recirculating ball steering gear body, booster A and booster B. The recirculating ball steering body includes an input shaft 10, a straight pin 8, a torsion bar 9, a bearing A13, an upper cover 5, an intermediate housing 3, a baffle plate 4, an adjusting gasket 14, a steering screw 11, a mechanical steering housing 18, Steering nut 15, steel ball 16, steering arm shaft and side cover assembly 17. The diverter housing 18 of the recirculating ball diverter body is provided with an assembly hole A29 and an assembly hole B30. The assembly hole A29...

Embodiment 2

[0044] Such as figure 2 As shown, booster A and booster B are respectively arranged at the upper and lower parts of the tail end of the global steering gear;

[0045] First, the input shaft 10, the torsion bar 9, the steering screw 11, and the cylindrical pin 8 of the dual power-assisted mechanism of the recirculating ball steering gear are fixedly assembled into a steering screw assembly. The dual booster mechanism of the recirculating ball steering gear includes the recirculating ball steering gear body, booster A and booster B. The recirculating ball steering body includes an input shaft 10, a straight pin 8, a torsion bar 9, a bearing A13, an upper cover 5, an intermediate housing 3, a baffle plate 4, an adjusting gasket 14, a steering screw 11, a mechanical steering housing 18, Steering nut 15, steel ball 16, steering arm shaft and side cover assembly 17. The steering gear housing 18 of the recirculating ball steering gear body is provided with an assembly hole A29 and...

Embodiment 3

[0050] Such as image 3 As shown, booster A and booster B are respectively arranged at the upper and lower parts of the front end of the global steering gear;

[0051] First, the input shaft 10, the torsion bar 9, the steering screw 11, and the cylindrical pin 8 of the dual power-assisted mechanism of the recirculating ball steering gear are fixedly assembled into a steering screw assembly. The dual booster mechanism of the recirculating ball steering gear includes the recirculating ball steering gear body, booster A and booster B. The recirculating ball steering body includes an input shaft 10, a straight pin 8, a torsion bar 9, a bearing A13, an upper cover 5, an intermediate housing 3, a baffle plate 4, an adjusting gasket 14, a steering screw 11, a mechanical steering housing 18, Steering nut 15, steel ball 16, steering arm shaft and side cover assembly 17. The steering gear housing 18 of the recirculating ball steering gear body is provided with an assembly hole A29 and...

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Abstract

The invention relates to an assembly structure and an assembly method of a dual power-assist mechanism of a recirculating ball steering gear, belonging to the field of electric power steering gear for commercial vehicles. The present invention adopts double booster mechanisms on the recirculating ball mechanical steering gear. Since the present invention adopts double booster mechanisms, when the output torque is low, the transmission ratio of the deceleration mechanism can be reduced, thereby reducing the overall size of the deceleration mechanism; or maintaining the deceleration The transmission ratio of the mechanism remains unchanged, and the output torque requirement of the motor is reduced, which can greatly reduce the cost of the motor and the overall size of the motor. When the output torque is high, the transmission ratio requirement of a single set of reduction mechanism can be reduced, avoiding the problem of an oversized reduction mechanism transmission ratio caused by the output torque requirement, and the large external dimension caused by an oversized reduction mechanism transmission ratio, in order to reduce The problem of sacrificing the strength of the reduction mechanism due to the shape.

Description

technical field [0001] The invention relates to an assembly structure and an assembly method of a dual power-assist mechanism of a recirculating ball steering gear, belonging to the field of electric power steering gear for commercial vehicles. Background technique [0002] At present, the deceleration mechanism used in the electric steering gear commonly used in vehicles is a conventional one-stage worm gear deceleration mechanism. Due to the large noise and low efficiency of the metal worm gear, the worm gear generally uses nylon material with high efficiency and low noise. The worm is made of metal material, but nylon Due to the strength of the material, it cannot carry a large torque. The output torque of this electric steering gear can basically only meet the output torque requirements of light truck commercial vehicles, and cannot meet the torque output requirements of medium and heavy commercial vehicles; on the other hand, due to The structure of the deceleration mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/04
CPCB62D5/04B62D5/046B62D5/0454
Inventor 聂敏傅早清赵波任树王庆军孔真斌侯学为
Owner HUBEI HENGLONG AUTOMOTIVE SYST GRP
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