초록 ▼

In a motorcycle provided with an antilock brake system, a front fork supporting a front wheel of a motorcycle is supported to be rotatable by a head pipe which is located at the front end portion of a body frame of a motorcycle, a handle-bar is secured to an upper end portion of the head pipe, maste

In a motorcycle provided with an antilock brake system, a front fork supporting a front wheel of a motorcycle is supported to be rotatable by a head pipe which is located at the front end portion of a body frame of a motorcycle, a handle-bar is secured to an upper end portion of the head pipe, master cylinders attached to the handle-bar are connected to hydraulic wheel brakes, respectively, via brake pipes. An antilock brake system includes an ABS-unit for antilock control disposed in an intermediate portion of the brake pipes. The ABS-unit is disposed immediately behind the head pipe and between a pair of body frame components disposed on both lateral sides of the motorcycle body and extending, from the head pipe, obliquely downward and backward, while extending outward in directions opposite to each other in the width direction of the motorcycle body.

대표청구항 ▼

What is claimed is: 1. A motorcycle provided with an antilock brake system, comprising: a head pipe; a front fork supporting a front wheel supported to be rotatable by the head pipe located at a front end portion of a body frame of the motorcycle; a handle-bar secured to one end portion of the head

What is claimed is: 1. A motorcycle provided with an antilock brake system, comprising: a head pipe; a front fork supporting a front wheel supported to be rotatable by the head pipe located at a front end portion of a body frame of the motorcycle; a handle-bar secured to one end portion of the head pipe; at least one master cylinder attached to the handle-bar and connected to hydraulic wheel brakes, respectively, via brake pipes; and an ABS-unit for antilock control disposed in an intermediate portion of the brake pipes, immediately behind the head pipe and between a pair of body frame components disposed on lateral sides of the motorcycle body frame and extending, from the head pipe, obliquely downward and backward, while extending outward in directions opposite to each other in a width direction of the motorcycle body frame, wherein an axis line of a drive motor for the ABS-unit and a hydraulic pump are directed in a direction substantially perpendicular to a front axis line of one of the paired body frame components, and the ABS-unit is disposed so that the drive motor thereof faces outward from a window hole immediately behind the head pipe, the window hole being opened outwardly in the width direction of the motorcycle body frame. 2. A motorcycle provided with an antilock brake system according to claim 1, further comprising: a cylinder extending forward in a substantially horizontal manner from a front portion of an engine case; an engine provided with an intake unit, including air-fuel-mixture supply member and an air cleaner disposed above the cylinder and disposed below the body frame, wherein the ABS-unit is disposed in a space defined, to be substantially triangular in a plan view, by the head pipe of the body frame, and the pair of body frame components disposed on both lateral sides of the motorcycle body frame. 3. A motorcycle provided with an antilock brake system according to claim 1, wherein the ABS-unit is disposed so that connecting portions between the ABS-unit and the brake pipes are arranged so as to face outward from a window hole, which is defined by the body frame components, immediately behind the head pipe of the body frame, said window hole being opened outward in the width direction of the motorcycle body frame. 4. A motorcycle provided with an antilock brake system according to claim 1, wherein the ABS-unit is elastically supported by the body frame, the brake pipes connecting the ABS-unit to the master cylinders and to the wheel brakes are formed by connecting metal brake pipes and flexible brake hoses, said brake pipes being connected to the ABS-unit through the metal brake pipes, and brake pipe supporting members for securing the intermediate portion of the brake pipes to the body frame are provided to a portion of the brake hoses, said brake pipe supporting members supporting the brake hoses at a portion near the connection to the metal brake pipes. 5. A motorcycle provided with an antilock brake system according to claim 1, wherein the motorcycle body frame between the handle-bar and a seat has a portion lowered so as to form a low-floored footrest, and an article accommodation box for accommodating an article and a fuel tank are disposed under the seat. 6. A motorcycle provided with an antilock brake system comprising: a motorcycle body including a body frame extending in a longitudinal direction thereof; a front fork supported by a head pipe disposed to a front end portion of the body frame, in which a handle-bar is secured to an upper end portion of the head pipe, and at least one master cylinder attached to the handle-bar and connected to hydraulic wheel brakes, respectively, through brake pipes; a swing arm unit mounted to the body frame and connected to a rear wheel to be rotatable; an engine unit disposed at substantially a central portion of the motorcycle body and including a crank case, a cylinder and an intake device including air-fuel-mixture supply member and an air cleaner disposed above the cylinder; a transmission unit disposed behind the engine unit; a seat member disposed above the engine unit; and an antilock brake system including an ABS-unit for antilock control disposed at an intermediate portion of the brake pipes, wherein the ABS-unit is disposed in a space defined by the head pipe of the body frame, a pair of body frame components disposed to both lateral side portions of the motorcycle body and extending, from the head pipe, obliquely downward and backward, while extending outward in directions opposite to each other in a width direction of the motorcycle body and a top surface of the intake device. 7. A motorcycle provided with an antilock brake system according to claim 6, wherein the antilock brake system includes the brake pipes, the ABS-unit disposed between the brake pipes, front and rear disc-brakes disposed for the front and rear wheels, respectively, and brake levers and the master cylinders which are operatively connected to the handle-bar for controlling the front and rear disc-brakes, respectively. 8. A motorcycle provided with an antilock brake system, comprising: a front fork supporting a front wheel of the motorcycle, the front fork being supported to be rotatable by a head pipe located at a front end portion of a body frame of the motorcycle; a handle-bar secured to one end portion of the head pipe; master cylinders attached to the handle-bar and connected to hydraulic wheel brakes, respectively, via brake pipes; an ABS-unit for antilock control disposed in an intermediate portion of the brake pipes; a cylinder extending forward in a substantially horizontal manner from a front portion of an engine case; and an engine provided with an intake unit, including air-fuel-mixture supply member and an air cleaner disposed above the cylinder, the engine being disposed below the body frame, wherein the ABS-unit is disposed in a space defined by the head pipe of the body frame, a pair of body frame components disposed on lateral sides of the motorcycle body frame and extending, from the head pipe, obliquely downward and backward, while extending outward in directions opposite to each other in a width direction of the motorcycle body frame, and a top surface of the intake unit. 9. A motorcycle provided with an antilock brake system according to claim 8, wherein an axis line of a drive motor for the ABS-unit and a hydraulic pump is directed in a direction substantially perpendicular to a front axis line of one of the paired body frame components, and the ABS-unit is disposed so that the drive motor thereof faces outward from a window hole immediately behind the head pipe, said window hole being opened outward in the width direction of the motorcycle body frame. 10. A motorcycle provided with an antilock brake system according to claim 8, wherein the ABS-unit is disposed so that connecting portions between the ABS-unit and the brake pipes are arranged so as to face outward from a window hole, which is defined by the body frame components, immediately behind the head pipe of the body frame, said window hole being opened outward in the width direction of the motorcycle body frame. 11. A motorcycle provided with an antilock brake system according to claim 8, wherein the ABS-unit is elastically supported by the body frame, the brake pipes connecting the ABS-unit to the master cylinders and to the wheel brakes are formed by connecting metal brake pipes and flexible brake hoses, said brake pipes being connected to the ABS-unit through the metal brake pipes, and brake pipe supporting members for securing the intermediate portion of the brake pipes to the body frame are provided to a portion of the brake hoses, said brake pipe supporting members supporting the brake hoses at a portion near the connection to the metal brake pipes. 12. A motorcycle provided with an antilock brake system according to claim 8, wherein the motorcycle body frame between the handle-bar and a seat has a portion lowered so as to form a low-floored footrest, and an article accommodation box for accommodating an article and a fuel tank are disposed under the seat.