Double wishbone type suspension

专利摘要:
PURPOSE: A double wishbone suspension is provided to improve the strength against vertical reaction force applied from a damper to a lower arm by forming the asymmetric section of the lower arm and installing a bracket for connecting the damper and the lower arm in the inclined surface. CONSTITUTION: A double wishbone suspension comprises a steering knuckle(16) mounting a wheel; upper and lower arms(12,14) connecting the steering knuckle to a vehicle body; a damper(18) connected to the lower arm by a bracket(15), and fixed in the vehicle body; and a coil spring(20) surrounding the damper and absorbing impact and vibration from the road surface. The upper part of the lower arm is stepped to form the asymmetric section of the lower arm between the vehicle body and the steering knuckle, and steps are connected by an incline surface. The rigidity against vertical reaction force is increased by mounting the bracket in the inclined surface of the lower arm.
公开号:KR20030041247A
申请号:KR1020010071887
申请日:2001-11-19
公开日:2003-05-27
发明作者:이기연
申请人:기아자동차주식회사；
IPC主号:

专利说明:

Double wishbone suspension device {Double wishbone type suspension}
[7] The present invention relates to a suspension device for cushioning vibrations or shocks transmitted from the road surface to the vehicle body when the vehicle is driven, and more particularly, to a double wishbone suspension device improved to significantly reduce the shock transmitted from the damper to the lower arm. It is about.
[8] There are various types of suspension devices for improving the riding comfort by preventing the vibrations or shocks generated from the road surface to be transmitted to the vehicle body when the vehicle moves. The double wishbone suspension, which is mainly used as an independent suspension of the front wheel, is shown in FIG. 1.
[9] As shown, the double wishbone suspension includes a steering knuckle 16 having an upper arm 12 and a lower arm 14 each having an approximately " V " shape supporting the wheels above and below the axis of rotation of the wheels. 2) has a configuration connected to.
[10] The upper arm 12 is hinged at both ends of the pair of upper arm brackets 24, respectively. The pair of upper arm brackets 24 are connected to each other by a tower bracket 26, and the upper arm 12 is fixed by fixing the pair of upper arm brackets 24 and the tower brackets 26 to the vehicle body 2. Is connected to the vehicle body 2.
[11] In addition, the vibration and shock transmitted from the road surface are applied to the coil spring 20 surrounding the damper 18 and the damper 18, which are erected in the up and down direction so that the lower end is connected to the lower arm 14 and the upper end is connected to the vehicle body. Is reduced. The damper 18 is connected to the lower arm through a connection hole formed in the lower arm 14 or through a bracket provided on the upper surface of the lower arm 14.
[12] In addition, when the left and right wheels move up and down separately due to the curvature of the road surface, the rolling of the vehicle body is absorbed by the stabilizer bars 22 connected to both lower arms 14 across the vehicle body 2.
[13] In the suspension device having such a configuration, in particular the vertical force among the forces transmitted from the wheel to the suspension device is attenuated by the damper 18. That is, the damper 18 exerts a damping force proportional to the speed at the time of displacement from bottom to top, which is called a bumper. Therefore, the force downward acts on the reaction force against the bumper force is mainly applied to the portion where the damper 18 is connected to the lower arm 14.
[14] However, in the conventional suspension device as described above, there is a high possibility that the lower arm 14 may be damaged because the damper 18 does not sufficiently support the reaction force of the damper 18 in which the connection portion between the damper 18 and the lower arm 14 acts downward. . That is, when the direct hole is formed in the lower arm 14, only a portion of the lower arm 14 corresponding to the lower portion of the lower hole 14 supports the vertical reaction force of the damper 18, so that The support efficiency for the damper 18 is lowered.
[15] In addition, even when the connecting bracket is installed on the upper surface of the lower arm 14, when the vertical reaction force of the damper 18 is excessive, there is a high possibility that the lower arm 14 is broken, and when the lubrication of the connecting portion is insufficient, friction due to rotation This vibration and noise may be converted into a problem that is transmitted to the vehicle body 2 through the lower arm (14).
[16] The present invention has been made in view of the above, and an object thereof is to provide a suspension device excellent in supporting rigidity against a vertical reaction force of a damper.
[1] 1 is a side view showing a conventional double wishbone suspension device.
[2] Figure 2 is a side view showing a double wishbone suspension system according to an embodiment of the present invention.
[3] Explanation of symbols on the main parts of the drawings
[4] 12: upper arm 14: lower arm
[5] 15 Bracket 16: Steering Knuckle
[6] 18 damper 20 coil spring
[17] The above object is, the steering knuckle to which the wheel is mounted, the upper and lower arms connecting the steering knuckle to the vehicle body on the rotation axis of the wheel mounted on the steering knuckle, the lower side, and the lower end thereof is installed on the upper surface of the lower arm It is connected to the lower arm through the bracket, the upper end is mounted to the damper fixed to the vehicle body, and is installed to surround the damper, the double wishbone suspension system for automobiles including a coil spring to absorb the shock and vibration from the road surface with the damper In the lower arm, the upper part is formed in a stepped manner so that the cross section between the vehicle body side and the steering knuckle side is asymmetrical, and two adjacent ends are connected by an inclined surface to the vehicle double wishbone suspension according to the present invention. Achieved by the device.
[18] Preferably, the bracket connecting the damper and the lower arm is installed on the inclined surface of the lower arm.
[19] Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.
[20] Figure 2 shows a double wishbone suspension device according to an embodiment of the present invention. In the description of this embodiment, the same reference numerals are used for the same configurations as in the prior art.
[21] As shown, the double wishbone suspension according to an embodiment of the present invention, the steering knuckle 16, the upper arm 12, the lower arm 14, the damper 18, the coil spring ( 20 and a stabilizer bar 22.
[22] The steering knuckle 16, on which the wheels are mounted, is connected to the vehicle body by an upper arm 12 and a lower arm 14 having an approximately "V" shape.
[23] The lower arm 14 has an asymmetrical cross-sectional shape between one end connected to the vehicle body and the center part connected to the steering knuckle 16. Specifically, the upper portion has a step shape in which the height varies in stages. In addition, the surface connecting each stage is composed of an inclined surface.
[24] As such, when the cross-sectional shape of the lower arm 14 is made asymmetric, the compressive-tensile stress is reduced (Manner of Constant Strength), in particular the tensile stress is greatly reduced.
[25] On the other hand, the damper 18 is lower end is connected to the lower arm 14 through a bracket 15 provided on the upper surface of the lower arm 14, the upper end is erected to be connected to the vehicle body (2). The upper portion of the damper 18 is surrounded by a coil spring 20. The bracket 15 connecting the lower end of the damper 18 with the lower arm 14 is provided on the inclined surface of the lower arm 14.
[26] Thus, when the bracket 15 is installed on the inclined surface of the lower arm 14, the sine of the angle between the inclined surface on which the bracket 14 is placed and the vertical reaction force on the vertical reaction force transmitted from the damper 18 to the bracket 15 Since only the force reduced by the value multiplied is applied, the force applied to the bracket 14 is reduced.
[27] Double wishbone suspension according to the present invention as described above forms a cross-sectional shape of the lower arm asymmetrical, and by installing a bracket connecting the damper and the lower arm on the inclined surface, the vertical reaction force acting on the lower arm from the damper Stiffness has the advantage of greatly improved.
[28] In the above, the present invention has been illustrated and described with respect to specific preferred embodiments, but the present invention is not limited only to the above-described embodiments, and those skilled in the art to which the present invention pertains may claim Various modifications can be made without departing from the spirit of the technical idea of the present invention.

权利要求:
Claims (2)
[1" claim-type="Currently amended] A steering knuckle on which wheels are mounted, an upper and lower arms connecting the steering knuckles to the vehicle body on the lower and lower axes of rotation of the wheels mounted on the steering knuckle, respectively, and a lower end thereof through a bracket installed on an upper surface of the lower arm. A double wishbone suspension system for automobiles, comprising: a damper connected to the lower arm and having an upper end fixed to a vehicle body; and a coil spring installed to surround the damper and absorbing shock and vibration from a road surface together with the damper. In
The lower arm is formed in a stepped upper portion so that the cross section between the vehicle body side and the steering knuckle side is asymmetrical, two adjacent ends are connected to the slope by the vehicle.
[2" claim-type="Currently amended] The double wishbone suspension system for automobiles according to claim 1, wherein the bracket connecting the damper and the lower arm is installed on an inclined surface of the lower arm.

类似技术:

---

公开号 | 公开日 | 专利标题

---

CN102971203B|2015-11-25|For the suspension mounting structure of vehicle

---

CN101670763B|2013-08-28|Suspension system for vehicle

---

US7357402B2|2008-04-15|Arrangement for vibration damping in a vehicle

---

JP5739990B2|2015-06-24|Single joint type damper strut suspension

---

JP2005178410A|2005-07-07|High mount type double wishbone type suspension device

---

CA2150718A1|1995-06-15|Suspension system for vehicle

---

US7077407B2|2006-07-18|Interconnected suspension

---

JP2004099017A|2004-04-02|Front wheel suspension device utilizing steering gear frame

---

JP2008522892A|2008-07-03|Independent suspension for automobiles

---

JP2924306B2|1999-07-26|Wheel independent suspension

---

JP2005053321A|2005-03-03|Suspension cover structure of vehicle

---

US6412797B1|2002-07-02|Front wheel suspension system for a vehicle

---

EP1120299A1|2001-08-01|Mounting structure for suspension V-Rod

---

DE10135791A1|2002-05-16|Carrier system, to suspend the front steering assembly at a vehicle, has an I-shaped bar with integrated spring support surfaces and reinforced openings to reduce the weight without loss of strength and stability

---

US4501436A|1985-02-26|Supporting assembly for a suspension

---

DE102004060589A1|2005-08-04|Rear wheel suspension device

---

KR100461602B1|2004-12-14|Bush for suspension of vehicle

---

DE19941686B4|2006-01-12|Suspension device for motor vehicles

---

WO2009030227A1|2009-03-12|Vehicle

---

EP1572516A2|2005-09-14|Running gear for rail vehicles

---

CN100457481C|2009-02-04|Multi-link rear-suspension system

---

US4652009A|1987-03-24|Rear suspension system for vehicle

---

CN101402372B|2012-07-04|Traction arm installation apparatus of vehicle with miniature frame

---

US5558361A|1996-09-24|Suspension system for front wheels of a low-body bus

---

US5560638A|1996-10-01|Rear suspension system for vehicle

同族专利:

---

公开号 | 公开日

---

KR100475600B1|2005-03-10|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
2001-11-19|Application filed by 기아자동차주식회사

---

2001-11-19|Priority to KR20010071887A

---

2003-05-27|Publication of KR20030041247A

---

2005-03-10|Application granted

---

2005-03-10|Publication of KR100475600B1

优先权:

---

申请号 | 申请日 | 专利标题

---

KR20010071887A|KR100475600B1|2001-11-19|2001-11-19|Double wishbone type suspension|