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Hub unit with sensor

A wheel hub unit and sensor technology, applied in the direction of instruments, wheels, bearing components, etc., can solve the problems of large ground load error of tires and small reverse magnetostrictive effect

Inactive Publication Date: 2006-10-04
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to the sensor-equipped hub unit of Patent Document 2, the desired effect can be obtained when the magnetostrictive sensor is installed properly. However, when the magnetostrictive sensor is installed inappropriately, the detected magnetic deflection The stretching effect becomes smaller, and as a result, the error of the obtained tire contact load becomes larger
Furthermore, as data suitable for vehicle control, it is desirable to extract only the left-right direction component of the tire ground contact load, but if the location where the magnetostrictive sensor is installed is inappropriate, there is a problem that the left-right direction tire ground contact load cannot be obtained with high accuracy.

Method used

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  • Hub unit with sensor
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Embodiment Construction

[0051] Embodiments of the present invention will be described below with reference to the drawings. figure 1 A first embodiment of the sensor-equipped hub unit of the first invention is shown. In the following instructions, the left and right figure 1 left and right. In addition, the left side shows the inner side of the vehicle, and the right side shows the outer side of the vehicle.

[0052] This sensor-equipped hub unit has a hub unit 1 and a sensor device 2 for detecting its rotation and tire ground contact load.

[0053] The hub unit 1 has: a car body side track part 3 fixed on the car body side; a wheel side track part 4 on which a wheel is installed; a plurality of rotating bodies arranged in two rows between the two parts 3 and 4, that is, balls 5; and Cages 6 that hold the respective rows of balls 5 .

[0054] The vehicle body side rail member 3 has the function of the outer wheel (fixed wheel) of the bearing, and has a cylindrical portion 12 forming two rows of o...

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Abstract

A hub unit with a sensor has a hub unit (1) with a vehicle body side raceway member (3), a wheel side raceway member (4) and two rows of rolling bodies (5), and a sensor device (2). The sensor device (2) has a magnetostrictive sensor (8) for detecting an inverse magnetostrictive effect, and the magnetostrictive sensor (8) is installed on the vehicle body side raceway member (3) so that tensile strain at the uppermost portion of an inner ring (17) of the wheel side raceway member (4) can be measured. Tire contact load and rotating speed are detected from an output of the magnetostrictive sensor (8).

Description

technical field [0001] The present invention relates to a sensor-equipped hub unit in which a hub unit constituting a motor vehicle and a sensor device for detecting various information of the motor vehicle are integrated. Background technique [0002] In a motor vehicle, various information is necessary for control, so it is proposed to install a sensor device on a hub unit, which has a vehicle body side rail member fixed on the vehicle body side, a wheel side rail member on which the wheel is mounted, and a device. Two rows of rotors between said two parts. For example, in Patent Document 1 (Japanese Patent Laid-Open No. Hei 3-209016), a hub unit with a sensor is disclosed, in which a ring-shaped supporting member is installed on the inner end surface of the rail member on the vehicle body side, and the magnetostrictive A sensor is attached to the annular support member. [0003] In recent years, in addition to ABS control (anti-lock braking system), as a control means o...

Claims

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Application Information

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IPC IPC(8): G01L5/00F16C41/00F16C19/18F16C33/58B60B35/18
Inventor 上月健一小八木桂井上昌弘
Owner JTEKT CORP