KR-102962191-B1 - Joining Structure for Suspension

KR102962191B1KR 102962191 B1KR102962191 B1KR 102962191B1KR-102962191-B1

Abstract

The present invention relates to a suspension coupling structure, and a suspension coupling structure according to one embodiment of the present invention comprises an assist knuckle on which a strut portion is located, a revo knuckle on which a wheel is located at the outermost edge and which is fastened to the assist knuckle and rotates independently of the assist knuckle to perform steering of the wheel, a steering input portion fixed to a vehicle body and configured to apply steering force to the revo knuckle when steering, a rotational transmission unit located between the revo knuckle and the steering input portion to absorb an angular displacement formed between the steering input portion and the revo knuckle, a first link unit having one end located on one side of the assist knuckle and the other end located at the bottom of the revo knuckle, and a second link unit having one end located on the other side of the assist knuckle and the other end located adjacent to the other end of the first link unit at the bottom of the revo knuckle.

Inventors

김재영
이재원
문하경

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260507
Application Date: 20200916

Claims (10)

Assist knuckle where the strut is located; A revo-knuckle having a wheel positioned at the outermost edge, positioned adjacent to the assist knuckle, and rotating independently of the assist knuckle to perform steering of the wheel; A steering input unit configured to apply steering force to the above-mentioned revo-knuckle during steering; A rotational transmission unit positioned between the above-mentioned revo-knuckle and the above-mentioned steering input part to absorb angular displacement formed between the above-mentioned steering input part and the above-mentioned revo-knuckle; A first link unit having one end located on one side of the assist knuckle and the other end located at the bottom of the revo knuckle; and A suspension coupling structure comprising: a second link unit, one end of which is located on the other side of the assist knuckle and the other end of which is located adjacent to the other end of the first link unit at the bottom of the revo knuckle.
In Article 1, The above rotational transmission unit is a suspension coupling structure configured such that one end of the lever knuckle rotates by a predetermined angle with respect to the central axis of the steering input part.
In Paragraph 2, The above-mentioned rotary transmission unit is, A fastening part connected to the above-mentioned steering input part; and A suspension coupling structure comprising: a transmission part connected to the above-mentioned revo-knuckle and positioned to have a predetermined angle with respect to the above-mentioned connection part.
In Article 1, A suspension coupling structure configured such that the contact points of the extension line of the first link unit, the extension line of the second link unit, and the kingpin shaft are located adjacent to the tire.
In Paragraph 4, A suspension coupling structure configured such that the above kingpin shaft is positioned at a distance of 0 mm to 30 mm in the width direction of the vehicle from the above wheel center portion.
In Article 1, The above-mentioned first link unit is, A first fixed link connected to the above assist knuckle; A first rotary link connected to the above-mentioned revonuckle; and A suspension coupling structure comprising: a first connecting link located between the first fixed link and the first rotating link.
In Paragraph 6, The above-mentioned second link unit is, A second fixed link connected to the above assist knuckle; A second rotary link connected to the above-mentioned revonuckle; and A suspension coupling structure comprising: a second connecting link located between the second fixed link and the second rotating link.
In Article 7, A suspension coupling structure in which one end of the first fixed link connected to the assist knuckle is configured to be relatively closer to the outside of the vehicle than one end of the second fixed link.
In Paragraph 6, A suspension coupling structure in which both ends of the first connecting link are composed of ball joints and configured to be connected to the first fixed link and the first rotating link, respectively.
In Article 7, A suspension coupling structure in which both ends of the second connecting link are formed with ball joints and are configured to be connected to the second fixed link and the second rotating link, respectively.

Description

Joining Structure for Suspension The present invention relates to a suspension coupling structure, and provides a rotational transmission unit configured such that a levonuckle and a lower arm of the suspension, a steering input unit, and a steering driving force applied from the steering input unit can be applied to the levonuckle, and the invention relates to a suspension coupling structure including a rotational transmission unit capable of absorbing displacement caused by wheel rebound. A suspension is provided at the part of the vehicle where the wheel is installed to cushion vibrations generated between the wheel and the road surface. Various types of the above suspension are presented, and a suspension suitable for each vehicle model is selected and applied. An example of this is a MacPherson suspension as illustrated in FIG. 1. The MacPherson suspension includes a knuckle, a shock absorber (12) provided on the upper part of the knuckle to absorb vibration, a lower arm (13) connected to the lower part of the knuckle (11), and a stabilizer (14) connected to the lower part of the knuckle (11) or the lower part of the shock absorber (12). The knuckle (11) includes a wheel mount portion in which a wheel (W) is installed at the center, a shock absorber connection portion connected to the shock absorber (12) at the upper part of the knuckle, and a lower arm connection portion connected to the lower arm (12) at the lower part of the knuckle (11). FIG. 2 discloses a suspension structure in which a steering input part (20) is located at the top of an assist knuckle (30). A kingpin shaft extending from one end to which the steering input part (20) and the revo knuckle are connected is configured at a position spaced apart from the center axis of the wheel by a considerable distance. In the case of the conventional technology described above, a problem occurred in which the steering input unit is located in each suspension, and the kingpin axis formed from the steering input unit is positioned far inward from the tire (excessive kingpin offset). Furthermore, due to the configuration of the kingpin shaft as described above, an excessive load was generated on the steering input unit by external forces occurring depending on road conditions, and there was a problem in that the size and capacity of the steering input unit had to be increased to provide a reaction force to prevent this. Figure 1 illustrates the connection relationship of a rebonuckle as a prior art. FIG. 2 illustrates a kingpin shaft of a suspension in which a steering input is directly connected to an assist knuckle as part of the prior art. FIG. 3 illustrates a perspective view of a suspension coupling structure as an embodiment of the present invention. FIG. 4 illustrates the position of the kingpin axis of a suspension coupling structure as an embodiment of the present invention. FIG. 5 illustrates a change in the kingpin axis of a suspension coupling structure according to a left steering input as an embodiment of the present invention. FIG. 6 illustrates a change in the kingpin axis of a suspension coupling structure according to a right steering input as an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments below. These embodiments are provided to more completely explain the present invention to those with average knowledge in the art. Additionally, terms such as "...knuckle," "...unit," and "...part" described in the specification refer to a unit that processes at least one function or operation, and this may be implemented as hardware or a combination of hardware. In addition, the classification of the names of components in this specification as "first," "second," etc., is intended to distinguish them due to identical names, and is not necessarily limited to that order in the following description. In addition, the term 'wheel rebound' in this specification may be used to include all conditions in which a change in the wheel center occurs due to the application of external forces, etc. In addition, the suspension coupling structure of the present invention refers to a single suspension connected to each wheel (900), and in the case of a multi-wheel vehicle, a suspension coupling structure capable of independent steering for each wheel may be provided. Hereinafter, embodiments will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. The present invention relates to a suspension coupling structure in which a revo knuckle (100) is positioned inside an assist knuckle (20