Abstract:
PURPOSE: A lift-up apparatus for a low-floor bus is provided to easily and quickly lift the bus up by mounting a plurality of lifting units operated by oil pressure to both sides of the front and rear of the bus. CONSTITUTION: A lift-up apparatus for a low-floor bus is composed of a valve operating switch(11), a two-way valve and a check valve(12) connected to a brake connection pipe and receiving brake oil pressure, and lifting units(20) installed at both sides of the front and rear of the bus. The lifting unit includes a cylinder, a piston having a rod and a rubber packing, a return spring installed in the cylinder, and an oil-pressure sensor checking the oil pressure introduced into the cylinder and operating the piston.
Abstract:
PURPOSE: A vibration reducing device of a gas tank for a compressed natural gas bus is provided to prevent vibration from being transmitted from the vehicle body to the gas tank installed to the roof of the bus by absorbing impact with the vibration reducing unit. CONSTITUTION: A vibration reducing device comprises a tank carrier(10) installed on a roof(1a) of a bus with a compressed natural gas tank(2) to install the compressed natural gas tank to the roof; a detecting unit(11) installed in the front of the bus to detect the surface of the road; a control unit(12) detecting the surface of the road by receiving signals from the detecting unit; a vibration reducing unit(13) installed between the tank carrier and the roof to prevent vibration to the tank carrier; an air tank(14) supplying compressed gas through a connecting pipe(15) connected to the vibration reducing unit and charging air by an air compressor(16); and an actuator(17) mounted between the air tank and the vibration reducing unit to supply or shut off compressed air from the air tank to the vibration reducing unit corresponding to the output signal from the control unit.
Abstract:
PURPOSE: A variable inertia for a brake dynamo system is provided to precisely perform a brake test, a frictional member test and a vibration test by realizing a braking phenomenon based on load transition applied to a driving shaft. CONSTITUTION: A variable inertia for a brake dynamo system includes an inertia body(21) having a circular sectional shape. Plural guide holes(23) are formed in the inertia body(21). The guide holes(21) are radially formed around a rotating center, on which a driving shaft(5) is mounted. A driving motor(25) having a screw rotating shaft(27) is aligned in a length direction of the guide holes(23). The driving motor(25) is mounted on the rotating center in opposition to the guide holes(23). An inertia block(29) is coupled to the screw rotating shaft(27) of the driving motor(25). The inertia block(29) is slidably moved along the guide holes(23).
Abstract:
PURPOSE: A cooling apparatus of a brake system for a vehicle is provided to prevent vibration at the initial stage, and to restrict increase of temperature by converting frictional heat generated from a brake disk into electric energy in braking. CONSTITUTION: A cooling device of a brake system for a vehicle is composed of an energy converting unit(40) converting frictional heat into electric energy in contacting to a brake disk in a pressure pad(21) of a brake assembly installed in a wheel; and a conducting unit(50) applying direct current power to the energy converting unit through an axle rotating the wheel. Vibration is prevented, and overheat of the brake disk is restricted by converting frictional heat generated in the brake disk in braking into electric and heat energy.
Abstract:
PURPOSE: A protector for absorbing a shock of a vehicle is provided to protect a pedestrian by absorbing the secondary shock applied to the pedestrian colliding against the windshield glass of the vehicle. CONSTITUTION: A sensor(10) senses the shock energy applied to a hood panel(2) rotatably installed in the upper portion of an engine room. A solenoid(14) operated by the sensing signal of the sensor separates a locking hook(13) combined with a strike(12) to release the locking force of the strike. A first air bag(18) installed on the lower face of the hood panel opens the hood panel. A second air bag(19) installed on the lower face of the front portion of the hood panel expands toward the front face of a windshield glass after the hood panel is opened.
Abstract:
본 발명은 자동차의 디스크브레이크에 관한 것으로, 브레이크패드(4)에 부착된 라이닝이 압착되면서 마찰력에 의한 제동력을 발생시키는 브레이크디스크(10)의 내부에는 복수개의 냉매충진홈(11)이 원주방향을 따라 순차적으로 구비되고, 상기 냉매충진홈(11)에는 브레이크디스크(10)의 온도에 따라 과열된 브레이크디스크(10)를 냉각시켜 주도록 비등점이 서로 다른 냉매(20)가 각각 충진되어져, 상기 브레이크디스크(10)의 과열현상이 예방되면서 마찰력이 감소되는 페이드현상이 예방됨과 더불어, 이로인해 브레이크의 파열과 타이어의 파손이 예방되어 탑승자의 안전성이 향상되도록 된 것이다.
Abstract:
본 발명은 자동차의 브레이크패드에 관한 것으로, 휠실린더의 피스톤에 연결되는 패드플레이트(4a)와 브레이크디스크에 마찰되는 패드(4c)의 사이에 열팽창계수의 차이로 온도상승시 서로 다른 열팽창량을 가지는 소팽창합금(4b′)과 대팽창합금(4″)으로 이루어진 변형대응부(4b)가 구비되는 구조로 이루어진다. 따라서, 마찰열에 의해 브레이크디스크가 열변형되어도 상기 변형대응부(4b)의 팽창작용에 의해 패드(4c)의 면이 브레이크디스크에 균일하게 밀착된 상태에서 안정적으로 마찰작용이 일어나므로 저더(judder)가 발생하지 않게 되며, 이에 따라 제동시 정숙성과 승차감이 향상되고, 제동작용이 안정적으로 이루어진다.