Patent application number | Description | Published |
20120037466 | BRAKE DRUM AND METHOD FOR MANUFACTURING THE SAME - A method of manufacturing a brake drum for a vehicle is provided, which comprises: bonding at a temperature of 500° C. or higher a braking surface of a brake drum which is made of a gray cast iron material with a housing which is to accommodate the braking surface and is made of an aluminum alloy material; and removing residual stress that remains in the gray cast iron material by heating the braking surface at a temperature of about 600° C. The brake drum can improve fuel efficiency of a vehicle and drive comfort while having excellent braking performances. | 02-16-2012 |
20130037359 | BRAKE DISC USING TWO DIFFERENT MATERIALS AND METHOD OF PRODUCING THE SAME - A brake disc is disclosed which includes a friction unit having a coupling aperture formed at a center thereof, insert protrusions and depressions which are provided in a sawtooth formation at predetermined intervals along a circumference of the coupling aperture, wherein chamfers are formed at a predetermined angle on one or more of the upper and lower surfaces of the insert protrusions, and first locking parts locked into upper or lower spaces of the depressions. A hat unit, formed of a material different from that of the friction unit, coupled to the coupling aperture of the friction unit, and including insert recesses formed along a circumference thereof so that the insert protrusions are fitted therein, and second locking parts formed at predetermined intervals in the insert recesses so that they are inserted into the depressions and engage with the first locking parts, and to a method of producing the same. | 02-14-2013 |
20130043099 | BRAKE DISC USING DIFFERENT MATERIALS - A brake is disclosed which includes a disc plate is made of a first material, and an insert aperture is formed through the central portion of the disc plate. Coupling depressions are formed around the inner edge of the insert aperture, and a rivet aperture is formed in each of protrusion portions provided between the coupling depressions. A hat part is made of a second material and is inserted into the insert aperture. Coupling protrusions are provided around the outer edge of the hat part. A rivet aperture is formed in each of the coupling protrusions. Straps are disposed such that each strap passes over both the corresponding rivet aperture of the disc plate and the corresponding rivet aperture of the hat part. The rivets are inserted into the corresponding straps and the corresponding rivet apertures to fix the straps, the disc plate and the hat part together. | 02-21-2013 |
20130075208 | UNI-BODY TYPE HETEROGENEOUS MATERIAL BRAKE DISK AND MANUFACTURING METHOD THEREOF - Disclosed is a uni-body type heterogeneous material brake disk. In particular, the brake disk includes a friction part configured to be selectively in contact with a pad; and a hub joined with a bearing. More specifically, the friction part and the hub are made of heterogeneous materials through a uni-body type mold. To accomplish this, a connector connecting the friction part and the hub which are vertically spaced apart from each other is laterally spaced apart from the hub, and a bottom of the connector is connected with the hub. In doing so, an elevated platform is formed to prevent a casting from running over between the connector and the hub and an interface made of heterogeneous materials is formed in the connector. | 03-28-2013 |
20130284318 | PLASMA NITRIDING SURFACE TREATMENT METHOD FOR GRAY CAST IRON PART - Disclosed is a plasma nitriding surface treatment method for a gray cast iron part. In the plasma nitriding surface treatment method, a nitride layer is formed on a surface of the gray cast iron part by a selective ion nitriding treatment. The plasma nitriding surface treatment method is carried out such that the surface of the gray cast iron part is prevented from being deformed, and a reduction of the frictional coefficient of the part is prevented. | 10-31-2013 |
20140124308 | BRAKE DISK FOR VEHICLE - Disclosed herein is a brake disk for a vehicle, including: a hat mounted on a shaft of a wheel and including a plurality of mounting apertures formed in a radial direction along a circumferential lip of the hat; a braking band having a shape enclosing an outer portion of the hat and including a plurality of sliding bores formed in the radial direction at positions corresponding to the plurality of mounting apertures along the circumferential lip of the hat; and a plurality of sliding pins each having one end portion mounted in the mounting aperture and the other end portion fitted into the sliding bore and to slide within the sliding bore in the radial direction. | 05-08-2014 |
20140124309 | BRAKE DISK FOR VEHICLE - Disclosed herein is a brake disk for a vehicle including: a hat including a recessed portions radially extending around an outer circumference surface of the hat; a braking band including a friction face along an outer circumference surface of the braking band and a mounting aperture formed along the inner circumference of the friction face at a position corresponding to the recessed portions; a floating bush including one end mounted on the mounting aperture and the other end fitted in the recessed portions to move in the recessed portions; and a tensioner including a middle portion fixed to the floating bush by a fixing member and both ends supported to one side of the hat under axial tension. | 05-08-2014 |