Patent US4720646A successfully refreshed from Google Patents.
US4720646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection terminal assembly for stator coil
Assignee: Mitsubishi Electric Corp
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Filing: 1986-11-21
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Granted: 1988-01-19
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Expires: 2006-11-21
Abstract
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.
Inventors
- 👤 Koichi Torimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:37
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F5/00; H01F5/04; H02; H02K; H02K3/00; H02K3/46; H02K3/52; H02K3/521; H02K3/525
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
238 words
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.
Claim 2
Dependent Claim
238 words
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.
Claim 3
Dependent Claim
63 words
A stator coil assembly according to claim 1, wherein: (a) said one end of each terminal plate includes a radially inwardly extending arm (3b), (b) each snap retention means comprises a spring fluke (3c) bent outwardly from an associated arm, and (c) each arm is inserted into an associated first aperture until its spring fluke snaps into retentive engagement with a second aperture.
Claim 4
Dependent Claim
76 words
A stator coil assembly according to claim 1, wherein: (a) said one end of each terminal plate includes a radially inwardly extending arm (3b), (b) each snap retention means comprises an open aperture (3f) in an associated arm cooperable with a resilient fluke (1f) extending inwardly from a bottom of a second aperture, and (c) each arm is inserted into an associated first aperture until its open aperture is retentively snap engaged by a resilient fluke.
Claim 5
Dependent Claim
58 words
A stator coil assembly according to claim 1, wherein: (a) each snap retention means comprises a spring fluke (3c) bent outwardly from said one end of an associated terminal plate, and (b) said one end of each terminal plate is inserted into an associated second aperture until its spring fluke snaps into retentive engagement with a first aperture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |