Rotation detection device and manufacturing method for the same
AssigneeDenso Corporation
InventorsMitsuru Takasaki, Hiroyuki Tsuge
Life of this patent
Estimating the term…
Abstract
A rotation detector component detects a rotational state of a rotor and sends a rotational detection signal. A signal transmission component is electrically connected with a lead frame of the rotation detector component to transmit the rotational detection signal to an external device. A body portion holds the rotation detector component and a part of the signal transmission component. The body portion is integrally molded of a first resin to cover a joint portion between the lead frame and the signal transmission component, the rotation detector component, and a part of the signal transmission component. A part of the rotation detector component forms an exposed portion exposed from the body portion.
Claims15
A rotation detection device comprising:
- a rotation detector component configured to detect a rotational state of a rotor and to send a rotational detection signal;
- a signal transmission component electrically connected with a lead frame of the rotation detector component and configured to transmit the rotational detection signal to an external device;
- and
- a body portion holding the rotation detector component and a part of the signal transmission component, wherein
- the body portion is integrally molded of a first resin, after joining the lead frame of the rotation detector component with the signal transmission component to form a joint portion between the lead frame and the signal transmission component, to cover the joint portion, the rotation detector component, and the part of the signal transmission component,
- a part of the rotation detector component forms an exposed portion exposed from the body portion,
- the exposed portion is a tip end portion of the rotation detector component and distant from the joint portion,
- only the exposed portion is held by a holding member when the body portion is integrally molded, and
- the exposed portion has a tip end surface, which is distant from the joint portion and exposed.
A manufacturing method for a rotation detection device, the rotation detection device comprising:
- a rotation detector component configured to detect a rotational state of a rotor and to send a rotational detection signal;
- a signal transmission component electrically connected with a lead frame of the rotation detector component and configured to transmit the rotational detection signal to an external device;
- a body portion holding the rotation detector component and a part of the signal transmission component;
- and
- a mount portion configured to mount the body portion,
- the manufacturing method comprising:
- joining the lead frame of the rotation detector component with the signal transmission component to form a joint portion between the lead frame and the signal transmission component;
- and
- forming the body portion of the first resin by integrally molding the joint portion, the rotation detector component, and the part of the signal transmission component, such that a part of the rotation detector component has an exposed portion, which is exposed from the body portion, wherein
- the exposed portion is a tip end portion of the rotation detector component and distant from the joint portion,
- only the exposed portion is held by a holding member in the forming, and
- the exposed portion has a tip end surface, which is distant from the joint portion and exposed.
Dependencies are inferred from the claim text.