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US 11,685,209 B2Granted
Composite material bush
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorGi-Bong Jo
Life of this patent
Estimating the term…
Abstract
A composite material bush may include a center plate; and an outer foam which is arranged outside the center plate to surround the center plate and is made of different kinds of materials.
Claims15
A composite material bush comprising a core having a center portion and end portions, wherein the core comprises:
- a center plate;
- and
- an outer foam arranged outside the center plate to surround the center plate and is made of different kinds of materials,
- wherein a central area of the center plate includes a specific portion to prevent the outer foam from being separated from the center plate,
- wherein the center plate contains a steel material that provides uniform strength throughout the center portion of the core up to the end portions of the core,
- wherein the outer foam is arranged outside the center plate and contains a plastic material,
- wherein the specific portion includes a separation preventing jaw formed on the central area of the center plate, and a protruding jaw which is in contact with the separation preventing jaw is formed on an inner side of the outer foam, such that the outer foam is prevented from being separated from the center plate,
- wherein fastening holes are arranged at respective ends of the center plate in a longitudinal direction,
- wherein a center of each fastening hole deviates from a central axis of the center plate in the longitudinal direction to increase a width of the center plate around a bonding area between the center plate and the outer foam, and
- wherein the center plate is obliquely provided on the outer foam in which an imaginary first line segment passing through the central axis of the center plate is inclined at an angle with an imaginary second line segment passing through a central axis of the outer foam to facilitate fastening of the bush.
7 more elements
A method of manufacturing a composite material bush comprising a core containing a center plate and an outer foam arranged outside the center plate, the method comprising:
- performing a press molding or an extrusion molding of a steel material to form the center plate;
- providing a bonding material at a center portion of the center plate where at least some portion of the center plate contacts with the outer foam;
- and
- performing injection molding of a material to form the outer foam, thereby melting the bonding material and bonding the center plate to the outer foam,
- wherein a central area of the center plate includes a specific portion to prevent the outer foam from being separated from the center plate,
- wherein the outer foam contains a plastic material,
- wherein the specific portion includes a separation preventing jaw formed on the central area of the center plate, and a protruding jaw which is in contact with the separation preventing jaw is formed on an inner side of the outer foam, such that the outer foam is prevented from being separated from the center plate,
- wherein fastening holes are arranged at respective ends of the center plate in a longitudinal direction,
- wherein a center of each fastening hole deviates from a central axis of the center plate in the longitudinal direction to increase a width of the center plate around a bonding area between the center plate and the outer foam, and
- wherein the center plate is obliquely provided on the outer foam in which an imaginary first line segment passing through the central axis of the center plate is inclined at an angle with an imaginary second line segment passing through a central axis of the outer foam to facilitate fastening of the bush.
7 more elements
Dependencies are inferred from the claim text.