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KR-102963236-B1 - INTERMEDIATE SHAFT OF STEERING APPARATUS FOR VEHICLE

KR102963236B1KR 102963236 B1KR102963236 B1KR 102963236B1KR-102963236-B1

Abstract

The present embodiment relates to an automobile steering system. More specifically, by providing a cushioning member between a flange jock and a hollow shaft, an intermediate shaft of an automobile steering system can be provided that not only increases the axial stiffness and bending strength of the intermediate shaft but also effectively cushions vibrations transmitted through the wheels to improve the driver's steering feel.

Inventors

  • 조다은

Assignees

  • 에이치엘만도 주식회사

Dates

Publication Date
20260512
Application Date
20230622

Claims (10)

  1. A flange yoke having a yoke portion formed on one side and a connecting portion formed on the other side extending both sides in the radial direction; A hollow shaft having a bracket portion formed on one side extending radially to both sides not facing the coupling portion, and a sliding hole formed on the other side through which a solid shaft is inserted or withdrawn; and A cushioning member that cushions vibration between the flange jock and the hollow shaft, wherein the cushioning member is connected by a first fixing member penetrating the bracket portion and a second fixing member penetrating the coupling portion between the flange jock and the hollow shaft. The above buffer member is, A first spacer having a first through hole formed therein through which the first fixing member passes; A second spacer having a second through-hole formed therein through which the second fixing member passes; A support member having a shaft penetration hole formed in the center through which the hollow shaft passes, and insertion holes formed spaced apart from the shaft penetration hole into which the first spacer and the second spacer are respectively inserted; and A rubber layer formed by molding to cover one side and the other side of the above-mentioned support; Includes, The above support is, It is formed of any one of the materials polyvinyl chloride, polyethylene, polystyrene, polypropylene, polyvinylidene chloride, and urea resin, having a strength lower than that of the first spacer or the second spacer, and The above rubber layer is, An intermediate shaft of an automobile steering system characterized by being formed from any one of the following materials: NR (Natural Rubber), NBR (Nitrile Butadiene Rubber), CR (Chloroprene Rubber), EPDM (Ethylene Propylene Terpolymer), FPM (Fluoro Rubber), SBR (Styrene Butadine Rubber), CSM (Chlorosulphonated Polyethylene), urethane, and silicone.
  2. In Article 1, The above buffer member is, A plurality of cord members disposed between the support and the rubber layer and wound around adjacent first spacers and second spacers; An intermediate shaft of an automobile steering system characterized by further including
  3. In Article 1, A first support plate disposed on one side of the above buffer member and coupled to the bracket portion together with the buffer member through the first fixing member; An intermediate shaft of an automobile steering system characterized by further including
  4. In Paragraph 3, The above first support plate is, A first open groove formed with an open outer side in the radial direction so that the second fixing member passes through it; An intermediate shaft of an automobile steering system characterized by including
  5. In Article 4, A first damping member disposed within the first open groove at a certain distance from the inner surface of the first open groove, and interposed between the coupling part and the cushioning member to cushion the impact between the coupling part and the cushioning member; An intermediate shaft of an automobile steering system characterized by further including
  6. In Article 1, A second support plate disposed on the other side of the above buffer member and coupled to the coupling part together with the buffer member through the second fixing member; An intermediate shaft of an automobile steering system characterized by further including
  7. In Article 6, The above second support plate is, A second open groove formed with an open outer side in the radial direction so that the first fixing member passes through; An intermediate shaft of an automobile steering system characterized by including
  8. In Article 7, A second damping member disposed within the second open groove at a certain distance from the inner surface of the second open groove, and interposed between the bracket portion and the cushioning member to cushion the impact between the bracket portion and the cushioning member; An intermediate shaft of an automobile steering system characterized by further including
  9. delete
  10. In Article 1, The above rubber layer is, A protrusion protruding to the same height as the protrusion height of the first spacer or the second spacer; An intermediate shaft of an automobile steering system characterized by including

Description

Intermediate shaft of steering apparatus for vehicle The present embodiments relate to an intermediate shaft of an automobile steering system that absorbs vibrations transmitted from the underside of the automobile to the steering system. Generally, an automotive steering system is a device designed to assist the driver's steering force by utilizing the driving force of a motor. Based on the vehicle's operating conditions detected by sensors such as speed and torque sensors, the ECU drives the motor to provide a light and comfortable steering feel during low-speed driving, a heavy steering feel along with good directional stability during high-speed driving, and rapid steering in emergency situations, thereby offering the driver optimal steering conditions. However, conventional automobile steering systems configured in this manner lack a structure capable of significantly reducing vibration and noise in the linkage mechanism between the gearbox assembly and the operating mechanism including the steering wheel. Consequently, vibrations transmitted from the gearbox and the unpleasant high-frequency noise induced by these vibrations are conveyed to the driver through the linkage mechanism, which impairs the steering feel or causes discomfort to the driver. FIG. 1 is a schematic diagram of an automobile steering system according to one embodiment. FIG. 2 is a perspective view showing an intermediate shaft of an automobile steering system according to one embodiment. FIGS. 3 and FIGS. 4 are exploded perspective views showing a part of an intermediate shaft of an automobile steering system according to one embodiment. FIG. 5 is a partial cross-sectional view showing a part of the intermediate shaft of an automobile steering system according to one embodiment. FIG. 6 is a perspective view showing a buffer member of an intermediate axis according to one embodiment. Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the embodiments, if it is determined that a detailed description of related known components or functions may obscure the essence of the technical concept, such detailed description may be omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless otherwise specified. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used to describe the components of the present disclosure. These terms are used merely to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal flow relationship regarding components, methods of operation, or methods of production, for example, when the temporal or sequential relationship is described using "after," "following," "next," or "before," it may include cases where the relationship is not continuous unless "immediately" or "directly" is used. Meanwhile, where numerical values or corresponding information regarding a component (e.g., levels, etc.) are mentioned, even without separate explicit notation, the numerical values or corresponding information may be interpreted as including a range of error that may occur due to various factors (e.g., process factors, internal or external shocks, noise, etc.). FIG. 1 is a schematic diagram of an automobile steering system according to one embodiment, FIG. 2 is a perspective view showing an intermediate shaft of an automobile steering system according to one embodiment, FIG. 3 and FIG. 4 are exploded perspective views showing a part of an intermediate shaft of an automobile steering system according to one embodiment, FIG. 5 is a partial cross-sectional view showing a part of an intermediate shaft of an automobile steering system according to one embodiment. FIG. 6 is a perspective view showing a cushioning member of an intermediate shaft according to one embodiment. Referring to FIG. 1, the vehicle steering system comprises an operating mechanism (1) including a steering wheel (10) provided in the driver's seat, a link mechanism (2) connected to the opera