JPH0487865A - Mounting structure for wheel rotation sensor - Google Patents

Abstract

PURPOSE:To rationally utilize a narrow space in a drum wheel and to shut off heat generated by braking action through a bracket by mounting a toothed wheel outside a rotor disc in a lateral direction, and attaching a sensor and its wiring to the bracket provided on a mounting support. CONSTITUTION:A wheel rotation sensor 1 and its wiring 1a are attached opposite to a toothed wheel 3 rotating with a wheel having an attached disc brake inside a disc wheel 2. In this case, the toothed wheel 3 is mounted outside a rotor disc 2 in a lateral direction. A mounting support 6 having an attached brake calliper 5 is provided with a bracket 7 whose width is wider than the diameter of a sensor 1. The sensor 1 and its wiring 1a are attached to the bracket 7 on a face on a reverse side of a face opposite to the rotor disc 4a. Thus the sensor 1 and the toothed wheel 3 are mounted in the disc wheel 2, and an antilock brake system can be easily adopted for a large-sized car having an attached disc brake.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is utilized for detecting the rotational speed of a wheel in an anti-lock brake system. The present invention relates to the structure of mounting a wheel rotation sensor used in a disc brake.

〔overview〕

The structure of the present invention is to install a wheel rotation sensor for a disc brake in an anti-lock brake system by providing a mounting support to which a brake caliper is attached with a bracket having a width larger than the diameter of the sensor so as to straddle the rotor disc. By making it possible to mount the sensor and its wiring on the opposite side of the bracket to the side facing the rotor disk, the narrow space inside the disk wheel can be used rationally.
This protects the sensor and its wiring from heat generated by braking.

[Conventional technology]

An anti-lock brake system is a system that effectively utilizes the frictional force between the tires and the road surface to ensure the stability of a vehicle while the brakes are applied and to apply braking to the wheels.

If strong braking is applied on a slippery road surface, the wheels may become locked due to excessive braking force, and the locked wheels may lose lateral resistance, making the vehicle unstable. be.

Anti-lock braking systems have been adopted to solve these problems, but in this system, sensors are attached to the wheels, and these sensors constantly monitor the rotational status of the wheels to detect if one of the wheels has a tendency to lock. If so, the detected output is sent to the control device, and the control device that receives the detected output controls the control valve to immediately adjust the brake pressure and prevent the wheels from locking.

[Problem to be solved by the invention]

As described above, the anti-lock brake system can stop the vehicle by effectively utilizing the frictional force between the tires and the road surface while maintaining the stability of the vehicle. In order to use it on large vehicles equipped with disc brakes, it is desirable to mount a rotation sensor inside the wheel that detects the rotational speed of the wheel, but currently there is no space to install a rotation sensor, and if it is forcibly installed, the disc brake will be damaged. The heat generated during braking may cause malfunction.

The present invention solves this problem and aims to provide a structure for mounting a wheel rotation sensor that can rationally utilize the narrow space within the wheel.

[Means to solve the problem]

The present invention provides a structure in which a wheel rotation sensor and its wiring are mounted opposite to a toothed wheel that rotates together with a wheel on which a disc brake is mounted inside a disc wheel. Attached to the outside of the disc in the vehicle width direction,
A mounting support to which the brake caliper is attached is provided with a bracket having a width larger than the diameter of the sensor so as to straddle the rotor disk, and the sensor and its wiring are attached to the bracket on the opposite side of the surface facing the rotor disk. It is characterized by being attached to.

As the sensor, a magnetic sensor, an optical sensor, or the like can be used.

[Effect]

The toothed wheel is mounted outside the rotor disc in the vehicle width direction, and a bracket that straddles the rotor disc is provided on the mounting support to which the brake caliper is mounted, and the sensor and its wiring are installed on the opposite side of the bracket facing the rotor disc. Install.

As a result, the narrow space within the drum wheel can be used rationally, and furthermore, the bracket can block the heat generated by braking and protect the sensor and its wiring from the heat generated by the brake.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a cross-sectional view showing the configuration of a disk wheel portion according to an embodiment of the present invention, and FIG. 2 is a partial perspective view showing the state of sensor installation in the embodiment of the present invention.

The embodiment of the present invention includes a wheel rotation sensor 1 and its wiring 1a.
The toothed wheel 3 is mounted opposite to the toothed wheel 3 which rotates together with the wheel on which a disc brake is mounted on the inside of the disc wheel 2. The source wheel 3 is mounted on the outside in the vehicle width direction from the rotor disc 4a, and the brake caliper 5 A bracket) 7 having a width larger than the diameter of the sensor 1 is provided on the mounting support 6 to which the sensor 1 and its wiring 1a are attached so as to straddle the rotor disk 4a.
It is attached to the opposite side of the opposite side.

The brake caliper 5 includes a piston 8 that provides braking force.
An inner pad 9 that contacts the piston 8 and the inner surface of the rotor disk 4a, and an outer pad 10 that contacts the outer surface of the rotor disk 4a are supported.

The present invention is characterized by comprising a bracket 7 fixed to the mounting support 6 across the rotor disk 4a so that the sensor l is provided inside the disk wheel 2 having a limited volume and facing the toothed wheel 3; The sensor 1 and its wiring 1a are attached to this bracket 7.

Thereby, the sensor 1 can be mounted facing the source wheel 3 within a narrow space.

For braking, the piston 8 is connected to the inner pad 9 and outer pad 10.
The sensor 1 and its wiring 1a are isolated from the rotor disk 4a by the bracket 7, so they are protected from being directly exposed to the heat. Ru.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to install a toothed wheel and a sensor that detects the wheel rotation speed inside the disc wheel, so that an anti-lock brake system can be installed on a large vehicle equipped with disc brakes. It can be easily adopted, and since the sensor and its wiring are attached via a bracket, it is effective in preventing the effects of heat generated during braking.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the configuration of a disk wheel portion according to an embodiment of the present invention. FIG. 2 is a partial perspective view showing how the sensor is installed in the embodiment of the present invention. 1... Sensor, 1a... Wiring, 2... Disc wheel, 3... To toothed wheel 4... Wheel hub, 4a... Rotor disc, 5... Brake caliper, 6 ...Mounting support, 7...
Bracket, 8... Piston, 9... Inner pad, 10... Outer pad. Patent Applicant Hino Motors Co., Ltd. Representative Patent Attorney Nao Ide Takashi 8 Piston Figure 1

Claims (1)

[Claims] 1. In a wheel rotation sensor mounting structure in which a wheel rotation sensor and its wiring are mounted opposite to a toothed wheel that rotates together with a wheel on which a disc brake is mounted inside the disc wheel, the toothed wheel is
A bracket having a width larger than the diameter of the sensor is provided so as to straddle the rotor disk on a mounting support that is attached outside the rotor disk in the vehicle width direction and to which the brake caliper is attached, and the sensor and its wiring are connected to this bracket. . A wheel rotation sensor mounting structure, characterized in that the wheel rotation sensor is mounted on a surface opposite to the surface facing the rotor disk.