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US 4,720,646 AGranted
Connection terminal assembly for stator coil
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorKoichi Torimoto
Life of this patent
Estimating the term…
Abstract
The opposite end flanges 1d, 1e of a stator bobbin are provided with apertures 1a, 1b and clamping recesses 1c to firmly retain push-inserted terminal plates 3 and lead wires 4 during encapsulation by a molding resin 5. The retention of the terminal plate ends is implemented by spring flukes 3c snapping into engagement with flange apertures 1b during insertion.
Claims4
A stator coil assembly for an electric motor, comprising:
- (a) a bobbin having a central spool and first and second circular flanges (1d, 1e) on opposite ends of the spool,
- (b) a stator coil (2) wound on the bobbin and having at least two coil wire ends (21, 22),
- (c) at least two circumferentially spaced apertures means defined in a portion of the first flange, each aperture means comprising a first radially oriented aperture (1a) and a second axially oriented aperture (1b) intersecting the first aperture,
- (d) least two circumferentially spaced clamping recesses (1c) defined in a portion of the second flange in individual axial alignment with the aperture means,
- (e) at least two axially elongated terminal plates (3) having external lead wires (4) and the stator coil wire ends individually secured thereto,
- (f) one end of each terminal plate being inserted in an associated aperture means and cooperably defining therewith spring back, snap retention means (3c;
- 3f),
- (g) another, opposite end (3d) of each terminal, or a proximate portion of an associated lead wire (4) being retainingly inserted in and cooperable with an associated clamping recess such that each terminal plate is fixedly held in axial alignment with the bobbin, overlying the stator coil, and extending between the first and second flanges, and
- (h) an electrically insulating molding resin (5) encapsulating the terminal plates and the connections thereto of the lead wires and the coil wire ends.
6 more elements
Dependencies are inferred from the claim text.