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US 4,792,194 AGranted
Antilock brake device for vehicles
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsTsutomu Hayashi, Takeshi Kawaguchi, Tetsuo Tsuchida
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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsTsutomu Hayashi, Takeshi Kawaguchi, Tetsuo Tsuchida
Estimating the term…
An antilock brake device for vehicles including a sensor for sensing the possibility of wheel lock during braking by means of overrunning rotation of a flywheel interlocked with the wheel to produce an output and a hydraulic controller for reducing the braking hydraulic pressure of the wheel brake upon reception of the output from the sensor and increasing the braking hydraulic pressure when the output from the sensor is eliminated. The flywheel and a transmission for transmitting the rotation of the wheel to the flywheel are arranged in the hollow portion of a hub of the wheel. Transmission mechanisms are employed to separate components within the hub to further reduce the overall size of the system. A variety of embodiments also disclose cooperation between front and rear brakes to improve braking response and efficiency.
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a vehicle having a suspension for mounting a wheel, comprising
An antilock brake device for a wheel for a vehicle, comprising
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
Braking or traction control means specially adapted for particular types of vehicles: for single-track vehicles, e.g. motorcycles
Responsive to a difference between a speed condition, e.g. deceleration, and a fixed reference: sensing a rate of change of velocity
With failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means: using electrical…
Connection: to wheel
Term ended 20 Dec 2005 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The field of the present invention is antilock brake devices for vehicles such as motorcycles and automobiles.
Conventional antilock brake devices have been developed for vehicles which in some manner release or reduce the braking force on a wheel until rolling of the wheel is again achieved. One such conventional antilock brake system is disclosed in Japanese Patent Publication No. 120,440/1981 which includes a sensor designed to recognize the onset of a wheel locking condition during braking. The sensor in turn enables and disables a hydraulic controller which reduces the hydraulic pressure to the wheel brake. The sensor is operatively coupled to a wheel by means of a transmission arranged externally to the wheel to drive a flywheel. Because of this external orientation of the sensor, transmission and related components, the system disclosed in the aforementioned Japanese Patent Publication is subject to adverse effects by external conditions encountering the mechanism. Additionally, the size of the overall braking system including the antilock brake device would be excessively large, particularly for employment on motorcycles or the like which require compact, durable and lightweight elements and systems.
The present invention is directed to an antilock braking device which is compact and less susceptible to damage and disablement by external conditions. To this end, an antilock braking device is contemplated which employs a flywheel sensing mechanism and a transmission between the flywheel and the vehicle wheel, all of which is contained within a recess in the wheel hub. Through this arrangement, the braking system is compact and protected from external conditions.
FIG. 1 is a schematic plan view of a motorcycle employing a first embodiment of the present invention.
FIG. 2 is a side elevation of a braking device of the present invention with a portion of the mechanism in section for clarity.
FIG. 3 is a sectional view taken along line III--III of FIG. 2.
Embodiments of the present invention will be described with specific reference to the accompanying drawings in which all identical or corresponding elements of each of the embodiments will be indicated by corresponding numbers.
Looking to the embodiment of FIG. 1, a motorcycle 1 has a pair of front right and left wheel brakes 3f for braking a steering front wheel 2f. A single rear wheel brake 3r is employed for braking a rear wheel 2r of the motorcycle 1. The front brakes 3f are operated by the output of hydraulic pressure from a front master cylinder 5f operated by a brake lever 4. The rear brake 3r is operated by the output of hydraulic pressure from a rear master cylinder 5r which is actuated by a brake pedal 6. In this embodiment, the hydraulic pressure to the front brakes 3f are controlled by an antilock controller 7. Thus, the front wheel 2f and front brakes 3f are employed with the controller 7 in accordance with the present invention.
Turning to FIGS. 2 and 3, the details of the antilock control mechanism are disclosed. A hub 8 of the wheel 2f is supported through two bearings 11 on an axle 10. The axle 10 is secured to the lower ends of a front fork 9. Each of the brakes 3f includes a brake disc 12 securely fixed to the end face of the hub 8 and a brake caliper 14 straddling the disc 12 and supported by a bracket 13 to the front fork 9. The caliper 14 operates to grip the brake disc 12 when the output of hydraulic pressure from the cylinder 5f is supplied to the input port 14a. In this way, a braking force is applied to the wheel 2f.