Throttle sensor
AssigneesHitachi, Ltd., Hitachi Car Engineering Co., Ltd.
InventorsMasanori Kubota, Sadayasu Ueno
Life of this patent
Estimating the term…
Abstract
A throttle value spindle (3) is rotatably fixed to a throttle body (1). A recess is provided within the throttle body at one side of the throttle value spindle along the axial direction of the throttle valve spindle. A holder (6) is fixed to the throttle valve spindle within the recess and has brushes (7) at the opposite side of the throttle valve spindle, which rotates together with the throttle valve spindle. Resistors (12) are mounted on a ceramics circuit board (8) fixed on a housing (12). The housing engages with the recess in such a manner that the resistors contact with the brushes. When the brushes slide on the resistors corresponding to the rotation of the throttle value spindle, an electric signal is outputted continuously from the resistors.
Claims19
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising:
- a holder fixed to one end of said throttle valve spindle and having a brush which rotates along a predetermined path together with said throttle valve spindle;
- a circuit board having a resistor mounted thereon for contact with said brush and which is positioned perpendicular to the axial direction of said throttle valve spindle;
- and
- a housing holding said circuit board and being furnished with a lead frame and a connector for relaying an electric signal of said resistor, said housing being detachably fixed to said throttle body;
- wherein said housing further comprises means for adjusting a position of said brush with respect to the resistor.
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising:
- a holder being fixed to one end of said throttle valve spindle and having a plurality of brushes which rotate along a predetermined path together with said throttle valve spindle;
- a circuit board having a plurality of resistors mounted thereon for contact with said plurality of brushes and located on a plane substantially perpendicular to the axial direction of said throttle valve spindle;
- and
- a housing holding said circuit board and having a lead frame and a connector for transmitting an electric signal of said resistors, said housing being detachably fixed to said throttle body;
- wherein said housing forms a unitary structure with said connector.
A contact type throttle sensor for detecting a rotational angle of a throttle valve spindle rotatably mounted in a throttle body of an internal combustion engine comprising:
- a holder being fixed to one end of said throttle valve spindle and having a plurality of brushes which rotate along a predetermined path together with said throttle valve spindle;
- a circuit board having a plurality of resistors mounted thereon for contact with said plurality of brushes and located on a plane substantially perpendicular to the axial direction of said throttle valve spindle;
- and
- a housing holding said circuit board and having a lead frame and a connector for transmitting an electric signal of said resistors, said housing being detachably fixed to said throttle body;
- wherein said housing is sealed with respect to said throttle body by a sealing member.
Dependencies are inferred from the claim text.