Patent ID: 11892324
Assignee: DENSO CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A rotation angle sensor configured to detect a rotation angle of a shaft, the rotation angle sensor comprising:
an attachment member; and
a sensor integrated circuit attached to an attachment surface of the attachment member, wherein
the attachment member includes:
a connecting terminal protruding upward from the attachment surface; and
a guide protruding upward from the attachment surface and configured to position, together with the connecting terminal, the sensor integrated circuit at an attachment position,

the sensor integrated circuit includes:
a lead frame on which an electronic circuit for detecting the rotation angle is mounted; and
an exterior that covers the electronic circuit,

the lead frame includes:
a lead configured to guide a terminal of the electronic circuit from an inside to an outside of the exterior; and
an extending portion located in at least a portion of an outer periphery of the exterior,

at least one of the lead and the extending portion has an elastic structure, and
the sensor integrated circuit is attached to the attachment member by an elastic force generated from the elastic structure that biases a portion of the extending portion against the guide and that joins the lead to the connecting terminal, wherein
the lead has a distal end portion and a proximal end portion,
the lead has the elastic structure such that:
the distal end portion of the lead is bent toward an upper surface of the sensor integrated circuit to define an obtuse angle between the distal end portion and the proximal end portion when the sensor integrated circuit is not positioned at the attachment position; and
the distal end portion of the lead is biased against a wall surface of the connecting terminal when the sensor integrated circuit is positioned at the attachment position,

the extending portion includes an opposite extending portion protruding from the exterior in a protruding direction opposite to an extending direction of the lead,
the opposite extending portion has a distal end portion and a proximal end portion, and
the extending position has the elastic structure such that:
the distal end portion of the opposite extending portion is bent toward the upper surface of the sensor integrated circuit to define an obtuse angle between the distal end portion and the proximal end portion of the extending portion when the sensor integrated circuit is not positioned at the attachment position; and
the distal end portion of the opposite extending portion is biased against a wall surface of the guide when the sensor integrated circuit is positioned at the attachment position.