Electromagnetic driving unit and relay
AssigneeXiamen Hongfa Electric Power Controls Co., Ltd.
InventorsWenguang Dai, Meng Wang, Liji Su
Life of this patent
Estimating the term…
Abstract
An electromagnetic driving unit includes a bobbin having an inner hole; a coil wound on the bobbin; a movable attraction member disposed in the inner hole; and a static attraction member disposed at an end of the inner hole and opposite to the movable attraction member. A plane perpendicular to an axial direction of the inner hole is a projection plane; an orthographic projection area of the movable attraction member on the projection plane is a first projection area; an orthographic projection area of the static attraction member on the projection plane is a second projection area; and the second projection area is larger than the first projection area.
Claims19
An electromagnetic driving unit, comprising:
- a bobbin having an inner hole;
- a coil wound on the bobbin;
- a movable attraction member disposed in the inner hole;
- and
- a static attraction member disposed at an end of the inner hole and opposite to the movable attraction member,
- wherein a plane perpendicular to an axial direction of the inner hole is a projection plane;
- an orthographic projection area of the movable attraction member on the projection plane is a first projection area;
- an orthographic projection area of the static attraction member on the projection plane is a second projection area;
- and the second projection area is larger than the first projection area.
A relay comprising a contact part for implementing a switching function and an electromagnetic driving unit for driving a contact part of the relay to perform a switching action, wherein the electromagnetic driving unit comprises:
- a bobbin having an inner hole;
- a coil wound on the bobbin;
- a movable attraction member disposed in the inner hole;
- and
- a static attraction member disposed at an end of the inner hole and opposite to the movable attraction member,
- wherein a plane perpendicular to an axial direction of the inner hole is a projection plane;
- an orthographic projection area of the movable attraction member on the projection plane is a first projection area;
- an orthographic projection area of the static attraction member on the projection plane is a second projection area;
- and the second projection area is larger than the first projection area.
Dependencies are inferred from the claim text.