Rotary movement sensor equipped with means of assembly with a drive shaft designed to minimize the effects of a misalignment in the connection
First Claim
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1. A sensor for detecting the position and movement of a rotary drive shaft (2), the sensor comprising:
- a stator (5), a rotor (4) equipped with connecting means (14) for connecting the rotor to the drive shaft (2) and with a moving target (6) intended to move past at least one detection system (9) capable of delivering a signal as a function of the position of the moving target, a ball joint (10) interposed between the stator (5) and the rotor (4) and placed along the axis (x) of the rotor, at a limited given distance (h) from the moving target, and the rotor (4) being equipped, by way of the connecting means (14), with at least two eleastic legs (15) urged toward each other by an elastic pin (16) intended to provide a connection to the drive shaft (2) at a point some distance from the ball joint (10) designed to allow a misalignment (E) of given magnitude between the rotor (4) and the shaft (2) while at the same time obtaining a determined minimum variation in positioning between the rotor and the stator.
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Abstract
A sensor for detecting the angular position of a rotary drive shaft is disclosed which includes a stator, a rotor connected to the stator by a ball joint and including a moving target, and a drive shaft connected to the rotor. The moving target passes through a detection system and produces a signal as a function of its position. Variations in the sensor output signal due to misalignment of the rotor and the drive shaft are minimized by locating the moving target close to the axis of rotation of the ball joint.
27 Citations
12 Claims
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1. A sensor for detecting the position and movement of a rotary drive shaft (2), the sensor comprising:
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a stator (5), a rotor (4) equipped with connecting means (14) for connecting the rotor to the drive shaft (2) and with a moving target (6) intended to move past at least one detection system (9) capable of delivering a signal as a function of the position of the moving target, a ball joint (10) interposed between the stator (5) and the rotor (4) and placed along the axis (x) of the rotor, at a limited given distance (h) from the moving target, and the rotor (4) being equipped, by way of the connecting means (14), with at least two eleastic legs (15) urged toward each other by an elastic pin (16) intended to provide a connection to the drive shaft (2) at a point some distance from the ball joint (10) designed to allow a misalignment (E) of given magnitude between the rotor (4) and the shaft (2) while at the same time obtaining a determined minimum variation in positioning between the rotor and the stator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification