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

Claim 9:
10. A method for manufacturing a rotation angle sensor configured to detect a rotation angle of a shaft, the rotation angle sensor including:
an attachment member; and
a sensor integrated circuit attached to the attachment member, wherein
the attachment member has an attachment surface to which the sensor integrated circuit is attached and includes:
a connecting terminal that protrudes upward from the attachment surface; and
a guide that protrudes 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 extend 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,

the method comprising:
(a) a bending step of bending a distal end portion of the lead toward an upper surface of the sensor integrated circuit such that the distal end portion of the lead is brought into contact with a wall surface of the connecting terminal when the sensor integrated circuit is positioned at the attachment position;
(b) a positioning step of setting the sensor integrated circuit at the attachment position on the attachment surface such that a lower surface of the sensor integrated circuit faces the attachment surface and the distal end portion of the lead is brought into contact with the connecting terminal; and
(c) a bending step of bending the connecting terminal and the distal end portion of the lead to define an acute angle between the distal end portion and a proximal end portion of the lead while the connecting terminal is being in contact with the distal end portion of the lead whereby the distal end portion of the lead is biased against the connecting terminal and the lead is joined to the connecting terminal by an elastic force generated when the distal end portion of the lead is bent.