HYBRID SUSPENSION ARM FOR VEHICLE

• US 20190315173A1
• Filed: 06/27/2019
• Published: 10/17/2019
• Est. Priority Date: 12/27/2016
• Status: Active Grant

• Current Assignee: Iljin USA (Iljin)
• Original Assignee: Iljin USA (Iljin)
• Inventors: KIM, Hyun Woo, LEE, Sung Keun, KWON, Tae Sung, LEE, Dae Ju, PARK, Min Kook, KWON, Soon Chan
• Granted Patent: US 11,241,928 B2
• Time in Patent Office: Days
• CPC Class Codes: B29C 45/14344 Moulding in or through a hole in the article, e.g. outsert moulding
• CPC Class Codes: B29K 2077/00 Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2309/08 Glass
• CPC Class Codes: B29L 2031/30 Vehicles, e.g. ships or aircraft, or body parts thereof vanes or blades B29L2031/08, air bags B29L2022/027
• CPC Class Codes: B60G 2206/013 with embedded inserts for material reinforcement
• CPC Class Codes: B60G 2206/014 with reinforcing nerves or branches
• CPC Class Codes: B60G 2206/122 the arm having L-shape
• CPC Class Codes: B60G 2206/124 the arm having triangular or Y-shape, e.g. wishbone
• CPC Class Codes: B60G 2206/7101 Fiber-reinforced plastics [FRP]
• CPC Class Codes: B60G 2206/72 Steel
• CPC Class Codes: B60G 2206/722 Plates
• CPC Class Codes: B60G 7/001 Suspension arms, e.g. constructional features B60G7/006 takes precedence

Abstract

The present disclosure provides a hybrid suspension arm for a vehicle, having excellent durability. A hybrid suspension arm for a vehicle according to one embodiment of the present disclosure comprises: a suspension arm body which is made of metal material and comprises a top plate part and two sidewall parts extending downward from the top plate part to be open downward; and an insert molding which is made of plastic material and is formed by being insert-molded in the suspension arm body, wherein a thickness of at least a portion in the portion of the insert molding that comes in contact with the top plate part and the sidewall parts is in the range of 2 mm to 3 mm.

Claims

1. A hybrid suspension arm for a vehicle, comprising:

a suspension arm body made of metal material and comprising a top plate part and two sidewall parts extending downward from the top plate part to be open downward; and

an insert molding made of plastic material and formed by being insert-molded in the suspension arm body,

wherein a thickness of at least a portion in the portion of the insert molding in contact with the top plate part and the sidewall parts is in a range of 2 mm to 3 mm.

2. The hybrid suspension arm for a vehicle according to claim 1, wherein an overall thickness of the portion of the insert molding in contact with the top plate part and the sidewall parts is in a range of 2 mm to 3 mm.

3. The hybrid suspension arm for a vehicle according to claim 1, wherein:

at least one hole is formed to pass through the suspension arm body;

at least one coupling protrusion extending to pass through the at least one hole and expanding from the at least one hole by a predetermined area is formed in the insert molding; and

a thickness of the expanded portion of the coupling protrusion is in a range of 2 mm to 3 mm.

4. The hybrid suspension arm for a vehicle according to claim 1, wherein:

at least one reinforcing rib is formed to protrude from the insert molding; and

a thickness of the reinforcing rib is in a range of 2 mm to 5 mm.

5. The hybrid suspension arm for a vehicle according to claim 4, wherein the reinforcing rib comprises portion extending between two facing sidewall parts of the insert molding and portion intersecting with the portion extending between the two facing sidewall parts of the insert molding.

6. The hybrid suspension arm for a vehicle according to claim 1, further comprising:

at least one reinforcing plate made of metal material, installed in the suspension arm body, and having both side walls fixed to the suspension arm body to support the suspension arm body,

wherein the reinforcing plate comprises a side surface facing the top plate part,

a portion of the insert molding is formed between the side surface of the reinforcing plate and an inner surface of the top plate part, and

the reinforcing plate is embedded in the insert molding so as to surround all surfaces of the reinforcing plate, except for the both side walls, by the insert molding, such that the insert molding is prevented from being separated from the suspension arm body due to the reinforcing plate.

7. The hybrid suspension arm for a vehicle according to claim 6, wherein at least one hole filled with the insert molding is formed to pass through the reinforcing plate.

8. The hybrid suspension arm for a vehicle according to claim 6, wherein a thickness of the portion of the insert molding formed on a side surface of the reinforcing plate, which is opposite to the side surface facing the top plate part, is in a range of 2.5 mm to 3 mm.

9. The hybrid suspension arm for a vehicle according to claim 6, wherein a thickness of the portion of the insert molding formed on side surfaces of the reinforcing plate in a thickness direction is in a range of 2.5 mm to 3 mm.

10. The hybrid suspension arm for a vehicle according to claim 1, wherein:

a flange is formed on the suspension arm body by bending an end portion of the sidewall part; and

a thickness of the portion of the insert molding in contact with an end of the flange is in a range of 2.5 mm to 3 mm.

11. The hybrid suspension arm for a vehicle according to claim 1, wherein a suspension arm body is formed of steel material.

12. The hybrid suspension arm for a vehicle according to claim 1, wherein the insert molding is formed of fiber-reinforced plastic material.