A steering column for suppressing steering wheel chatter in a hydraulic power steering system
By installing an inertia ring structure in the middle section of the steering column, the problem of steering wheel vibration during high-speed driving in a mechanical hydraulic power steering system was solved, achieving low-cost modification and effective suppression.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGLING MOTORS
- Filing Date
- 2025-07-27
- Publication Date
- 2026-07-21
AI Technical Summary
Existing mechanical hydraulic power steering systems are prone to steering wheel vibration at high speeds. While existing electro-hydraulic and electric power steering systems are effective, they increase the cost and complexity of parts development.
Two grooves are provided in the middle section of the steering column, and an inertia ring is fitted on the outside of them. The inertia ring consists of an inner ring and an outer ring. The inner ring matches the diameter of the steering column and absorbs vibration through buffer rubber. The inertia ring is fixed by fixing bolts and its position can be adjusted to adapt to different vibration levels.
It effectively suppresses steering wheel vibration, is low in cost, and is suitable for retrofitting existing mechanical hydraulic power steering systems, making it widely applicable.
Smart Images
Figure CN224528761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile manufacturing, specifically to a steering column for suppressing steering wheel vibration in a hydraulic power steering system. Background Technology
[0002] When driving at high speeds, vibrations caused by uneven road surfaces and wheel imbalances are transmitted to the steering wheel, causing it to vibrate. Mechanical hydraulic power steering, although a relatively outdated steering wheel assist technology, is still widely used in the commercial vehicle sector.
[0003] To address the steering wheel vibration issue in mechanical hydraulic power steering, existing solutions include electro-hydraulic power steering systems and electric power steering systems. The former controls steering assistance by replacing the hydraulic pump with an electric hydraulic pump and a power steering ECU, while the latter directly replaces the original hydraulic power steering system with a steering motor. Both systems add a torque sensor to the steering column, which can monitor the steering wheel torque in real time and effectively suppress steering wheel vibration by inputting a reverse torque.
[0004] While the electro-hydraulic power steering and electric power steering mentioned above are very effective in suppressing steering wheel vibration, the development costs and complexity of the parts involved are significantly higher than those of the original mechanical hydraulic power steering. Utility Model Content
[0005] To address the aforementioned problems, this invention designs a steering column structure with an inertia ring, which effectively suppresses steering wheel vibration. Furthermore, this structure is suitable for retrofitting existing mechanical hydraulic power steering systems and has wide applicability. The specific technical solution is as follows:
[0006] A steering column for suppressing steering wheel vibration in a hydraulic power steering system includes an upper section, a middle section, and a lower end. The middle section has two grooves arranged symmetrically at 180 degrees around its axis. A fixed inertia ring is fitted around the outside of the grooves. The inertia ring includes an inner ring and an outer ring. The diameter of the inner ring matches the diameter of the middle section and has bolt holes symmetrically arranged at 180 degrees to match the grooves. A buffer rubber is placed between the inner and outer rings.
[0007] Furthermore, both the inner and outer rings are made of metal.
[0008] Furthermore, the inertia ring is fixed in the groove by fixing bolts; the fixing position of the inertia ring is adjusted vertically in the axial direction of the middle section of the steering column according to the degree of steering wheel vibration of different vehicles.
[0009] This invention utilizes an inertia ring installed in the middle section of the steering column to absorb vibrations transmitted from the road surface, thereby suppressing steering wheel vibration at high speeds. The inertia ring is a mature component structure that can absorb vibrations at a relatively low cost. Furthermore, adding an axial groove to the middle section of the steering column allows for adjustment of the inertia ring's installation position, thus suppressing different levels of vibration. This design is suitable for retrofitting and is cost-effective. Attached Figure Description
[0010] Figure 1 Simplified structural diagram of a mechanical hydraulic power steering system;
[0011] Figure 2 A simplified diagram of the middle section structure of the steering column in the prior art;
[0012] Figure 3 A simplified structural diagram of the middle section of the steering column of this utility model;
[0013] Figure 4 A simplified diagram of the inertia ring structure of this utility model.
[0014] Figure label:
[0015] 1-Upper section of steering column, 2-Middle section of steering column, 3-Lower section of steering column, 4-Steering gear, 5-Power steering pump, 6-Power steering fluid reservoir, 7-Steering wheel, 8-Inertia ring, 9-Groove, 10-Buffer rubber, 11-Outer ring, 12-Fixing bolt, 13-Inner ring. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] like Figure 1 The diagram shown is a simplified structural diagram of an existing mechanical hydraulic power steering system. This invention addresses the middle section of the steering column (e.g., Figure 2 Adjustments are made to the (as shown) and an inertia ring is installed to form a steering column that suppresses steering wheel vibration in the hydraulic power steering system. Figure 3As shown, the steering column includes an upper section 1, a middle section 2, and a lower end 3. The middle section 2 has two grooves 9 along its axis, which are symmetrically arranged at 180 degrees in the circumferential direction of the steering column. A fixed inertia ring 8 is fitted around the grooves 9. The inertia ring 8 includes an inner ring 13 and an outer ring 11. The diameter of the inner ring 13 matches the diameter of the middle section 2, and bolt holes are provided on the inner ring 13. The bolt holes are symmetrically arranged at 180 degrees to match the grooves. A buffer rubber is provided between the inner ring 13 and the outer ring 11.
[0018] Both the inner ring 13 and the outer ring 11 are made of metal. The inertia ring 8 is fixed in the groove by the fixing bolt 12; the fixed position of the inertia ring 8 is adjusted vertically in the axial direction of the middle section of the steering column according to the degree of steering wheel vibration of different vehicles.
[0019] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A steering column for suppressing steering wheel vibration in a hydraulic power steering system, characterized in that: The steering column includes an upper section, a middle section, and a lower end. The middle section has two grooves along its axis, which are symmetrically arranged at 180 degrees around the circumference of the steering column. A fixed inertia ring is fitted around the outside of the grooves. The inertia ring includes an inner ring and an outer ring. The diameter of the inner ring matches the diameter of the middle section of the steering column, and bolt holes are provided on the inner ring. The bolt holes are symmetrically arranged at 180 degrees to match the grooves. A buffer rubber is provided between the inner and outer rings.
2. A steering column for suppressing steering wheel vibration in a hydraulic power steering system according to claim 1, characterized in that: Both the inner and outer rings are made of metal.
3. A steering column for suppressing steering wheel vibration in a hydraulic power steering system according to claim 1, characterized in that: The inertia ring is fixed in the groove by fixing bolts; the fixed position of the inertia ring is adjusted vertically in the axial direction of the middle section of the steering column according to the degree of steering wheel vibration of different vehicles.