Patent EP0286053A2 successfully refreshed from Google Patents.
EP0286053A2
Expired / Lapsed
EP
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Steering torque detecting device
Assignee: Mitsubishi Electric Corp
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Filing: 1988-04-05
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Granted: —
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Expires: 2008-04-05
Abstract
Abstract A steering torque detecting device comprises a steering shaft consisting of an input shaft (1) and an output shaft (2), a torsion bar (3) provided between the input shaft and the output shaft, a torque detecting unit for converting a quantity of torsion produced in the torsion bar into an electric output, an electricity collecting unit comprising slip rings (12) and brushes (21) which takes the electric output and supplies an electric power from an outer power source, bearings (8,9) for supporting the input and output shaft on the same axial line, and a housing (6,7) supporting the bearings, a printed wiring board (14) in a circular plate form which is provided at its one surface with a resistance layer and an output electrode radially spaced apart from the resistance layer, the resistance layer and the output electrode constituting a potentiometer, and a slider (16) having a portion extending in the radial direction of the circular printed wiring board (14) so as to have contacting areas with a small width to the resistance layer and the output electrode.
Inventors
- 👤 Mitsuharu Mitsubishi Denki Kabushiki Morishita
- 👤 Shinichi Mitsubishi Denki Kabushiki Kohge
- 👤 Tadayuki Mitsubishi Denki Kabushiki Hara
- 👤 Yasuaki Mitsubishi Denki Kabushiki Hata
- 👤 Hisato Ryoden Engineering Kabushiki Umemaru
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 10:51
CPC Classifications
B; B62; B62D; B62D6/00; B62D6/08; B62D6/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
193 words
A steering torque detecting device which comprises a steering shaft consisting of an input shaft (1) and an output shaft (2) and a torsion bar (3) for connecting said input shaft with said output shaft, characterized by a printed wiring board (14) in a circular plate form which is provided at its one surface with a resistance layer (15a) and an output electrode (15d) radially spaced apart from said resistance layer, said resistance layer (15a) and said output electrode (15d) constituting a potentiometer, and which is attached to either said input shaft or said output shaft, a plurality of slip rings (12) which are fixed to one (1) of said shafts (1,2) and are connected to electrodes (15b,15c) formed at both ends of said resistance layer (15a) and said output electrode, a plurality of brushes (21) in contact with said slip rings (12) to take detection signals, and a slider (16) mounted on the other (2) of said shafts (1,2) and having a portion extending in radial direction of said circular printed wiring board (14) so as to have contacting areas with a small width to said resistance layer and said output electrode.
Claim 2
Dependent Claim
193 words
A steering torque detecting device which comprises a steering shaft consisting of an input shaft (1) and an output shaft (2) and a torsion bar (3) for connecting said input shaft with said output shaft, characterized by a printed wiring board (14) in a circular plate form which is provided at its one surface with a resistance layer (15a) and an output electrode (15d) radially spaced apart from said resistance layer, said resistance layer (15a) and said output electrode (15d) constituting a potentiometer, and which is attached to either said input shaft or said output shaft, a plurality of slip rings (12) which are fixed to one (1) of said shafts (1,2) and are connected to electrodes (15b,15c) formed at both ends of said resistance layer (15a) and said output electrode, a plurality of brushes (21) in contact with said slip rings (12) to take detection signals, and a slider (16) mounted on the other (2) of said shafts (1,2) and having a portion extending in radial direction of said circular printed wiring board (14) so as to have contacting areas with a small width to said resistance layer and said output electrode.
Claim 3
Dependent Claim
151 words
The steering torque detecting device according to claim 1, characterized in that a zero point electrode (26a) having a portion extending in the circumferential direction to have a zero point contact part (26b) with a small width at its one end and a paired electrode (26c) formed radially apart from said zero point electrode (26a) are provided in the same surface as said resistance layer (15a) and said output electrode (15d) on said printed wiring board (14); said slip rings (12) are connected to said zero point electrode (26a) and said paired electrode (26c); and a zero point slider (27) is mounted on the same shaft (2) on which said slider (16) is mounted, said zero point slider (27) being such that when difference in the torque between said input and output shafts is zero, it is brought into contact with said zero point contact part and said paired electrode (26c).
Claim 4
Dependent Claim
37 words
The steering torque detecting device according to claim 1 or 2, characterized in that an amplifier circuit and a regulating circuit are provided on said printed wiring board (14) at the side of said output electrode (15d).
Claim 5
Dependent Claim
147 words
A steering torque detecting device as claimed in the first part of claim 1, characterized by a torque detecting unit for converting a quantity of torsion produced in said torsion bar (3) into an electric output, an electricity collecting unit comprising slip rings (12) and brushes (21) which takes said electric output and supplies an electric power from an outer power source, bearings (8,9) for supporting said input and output shafts (1,2) on the same axial line, and a housing (6,7) supporting said bearings, each of said brushes (21) being formed by a pair of elongated bodies (21a,21b) made of nickel or a nickel series alloy, one ends of which are electrically and mechanically connected to a terminal block (22) of a brush holder and the other ends as free ends being in contact with one slip ring (12) so as to hold said slip ring therebetween
Claim 6
Dependent Claim
104 words
A steering torque detecting device as claimed in the first part of claim 1, characterized by a torque detecting unit for converting a quantity of torsion produced in said torsion bar (3) into electric output, an electricity collecting unit comprising slip rings (12) and brushes (21) which takes said electric output and supplies an electric power from an outer power source, bearings (8,9) for supporting said input and output shafts on the same axial line, a housing (6,7) supporting said bearings (8,9), and a through capacitor interposed between a terminal block for holding said brushes and a drawing wire for taking detection signals outside.
References Cited (Backward Citations)
No citation records indexed.
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