Further features and advantages of the present invention will be apparent from the following description of a non-limitative embodiment thereof, with reference to the figures of the accompanying drawings, in which:
With reference to the aforesaid figures, numeral 1 indicates as a whole a supply and control device of an electrical apparatus 2 having a fluid-tight terminal 3 with pin contacts 4. Specifically, electrical apparatus 2 is a compressor (precisely a motor compressor assembly) for household appliances operated in a known manner by electrical windings supplied through pin contacts 4 and fluid-tight terminal 3 is a Fusite®, or of the Fusite® type, integrally carried by a carcass 5 (
Device 1 comprises a cup-shaped support 10 made from electrically non-conductive material within which there are accommodated a plurality of electrical contacts 12 of the blade type, which present same first ends 13 overhangingly arranged facing towards a same open side 14 of cup-shaped support 10, in turn arranged in use at an angle with respect to fluid-tight terminal 3 (in the case in point perpendicular to the laying plane of fluid-tight terminal 3) and with respect to a mouth 15 of cup-shaped support 10 facing in use the side opposite to fluid-tight terminal 3.
Cup-shaped support 10 integrally carries at least one wire clamping device 16 (hereinafter called “wire clamp 16” for the sake of simplicity) of a known type, arranged immediately adjacent to open side 14 and a housing 18 (
Housing 18 is arranged within cup-shaped support 10, in a position adjacent to blade contacts 12 but, according to an aspect of the invention, is separate from the rest of the internal volume of cup-shaped support 10 and accessible only through an opening 20 (
Bottom wall 21 of cup-shaped support 10 is integrally provided, on the side of mouth 15, with a plurality of positioning and fastening members 26 (
Device 1 further comprises a lid 27 formed by electrically non-conductive material and which is snappingly couplable (in a known and however obvious manner for a person skilled in the art and which is therefore not described) with cup-shaped support 10 to close mouth 15 in use; also lid 27 may be provided with ribs 28 or ridges (
According to a feature of the invention, housing 18 for thermal protector 19 consists of the concavity of an embossment 30 provided integrally in one piece with bottom wall 21 so as to overhangingly project within the concavity of cup-shaped support 10 and to present, as a consequence, its concavity (i.e. housing 18) facing in use fluid-tight terminal 3, aligned with opening 20.
Embossment 30 is provided with through perforations 31 (preferably delimited towards the inside of cup-shaped support 10 by corresponding collars 32—
Housing 18 may be preferably provided with snapping coupling means 35 (
Cup-shaped support 10 is shaped so as to define therein, sideways of housing 18 and in a position adjacent to blade contacts 12, between the latter and lid 27, a seat 40 for a second control device 41, in the case in point consisting of a starter; specifically, seat 40 is dimensioned (and shaped) so as to be adapted to indifferently accommodate either a starter 41a of the PTC pill type or a starter 41b of the electronic board type (known as E-starter).
According to a further aspect of the invention, bottom wall 21 integrally in one piece carries, within the concavity defined by cup-shaped support 10 and at reception holes 22 of pin contacts 4 of fluid-tight terminal 3, corresponding seats 50 (
According to the preferred embodiment shown, first mechanical coupling members 24 comprise one or more through perforations 24a,2b having prismatic shape and a shallow base 24c made through/on the bottom wall 21 peripherically around holes 22, while second mechanical coupling members 25, intended to be in use integrally secured to fluid-tight terminal 3 according to one of the main aspects of the invention, consist in one or more L-folded fins which peripherally and protrudingly extend from fluid-tight contact 3, radially with their first, root portions 60 and axially with their second, end portion 61 (
Possibly, the first and the second mechanical coupling members 24 and 25 may include mating snappingly fastening means of any known type and not shown for the sake of simplicity.
In all cases, however, perforation 24b accommodates therein a second end 70 (opposite to corresponding end 13) of a selected blade contact 12c (shown by a phantom line in
In combination with this feature, a fin 25a of fluid-tight terminal 3, intended to couple in use with opening 24b due to its selected positioning, is provided with securing means 75 to the ground contact 70 consisting of a hole adapted to throughly receive, in use, a fastening screw (not shown) to ground contact 70, in the case in point through open side 14 of cup-shaped support 10.
To close said open side 14 in use, device 1 finally comprises a removable closing flap 78 for side 14 integrally and tiltingly carried in use by cup-shaped support 10, in particular integrally made with lid 27, to which it is connected by means of an either elastically or plastically deformable thinned portion 80, defining a “plastic” hinge having a rotation axis A (
Wire clamp 16 is integrally obtained with cup-shaped support 10, preferably side by side to a second wire clamp 90, of a different type yet otherwise known, as wire clamp 16 is also of the known type. Both consist in seats 100,101 for the passage of the wires to be clamped, and in precision members 102,103 integrally connected, again by means of deformable members, to the edge of open side 14 and fastenable in seats 100,101 by means of screws 105 (
Cup-shaped support 10 is finally provided, at a side wall 110 thereof opposite to open side 14, with snapping fastening means for an electric member, preferably a power factor correction condenser 120; such snapping fastening means consist in a slot 115 engageable in use by a tooth 116 (
The preferred embodiment of the invention contemplates that fins 25 are integrally obtained in one piece with the Fusite®, so as to allow considerable assembly economy. Specifically, cup-shaped body 7 of fluid-tight terminal 3 presents an edge 300 which delimits the mouth of its concavity and which is arranged in use on the outside of carcass 5, for example projection-welded onto the same. Edge 300 is peripherally and overhangingly provided with a plurality of L-folded fins 25, in the case in point three fins arranged in a cross, reciprocally spaced out with a circumferential interval of 90°, a first, root portion 60 of which radially and overhangingly extends from edge 300, and ae second, terminal portion 61 of which, immediately adjacent to first portion 60, axially and overhangingly extends from first portion 60, parallelly to pin contacts 4; a fin 25a of such a type of modified Fusite® further presents a through hole 75 adapted to receive a fastening screw (not shown) to allow the mechanical fastening thereof to the above-described ground contact 70 of device 1.
It is apparent from the description that all the objects of the invention are reached. Both device 1 and modified Fusite® 3 display a small size and a great manufacturing and assembly simplicity; they further allow to entirely pre-wire all the electrical connections before mechanical assembly of device 1 onto terminal 3, which being performable in a single translation movement in the direction of arrow T (
Number | Date | Country | Kind |
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TO2006A 000266 | Apr 2006 | IT | national |