EP0142444A2 - Verfahren zur Herstellung eines Statorelements für einen Drehschalter und auf diese Weise hergestelltes Element - Google Patents
Verfahren zur Herstellung eines Statorelements für einen Drehschalter und auf diese Weise hergestelltes Element Download PDFInfo
- Publication number
- EP0142444A2 EP0142444A2 EP84402277A EP84402277A EP0142444A2 EP 0142444 A2 EP0142444 A2 EP 0142444A2 EP 84402277 A EP84402277 A EP 84402277A EP 84402277 A EP84402277 A EP 84402277A EP 0142444 A2 EP0142444 A2 EP 0142444A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- recesses
- crown
- zone
- stator element
- annulus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/08—Bases; Stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
Definitions
- Many rotary electrical switches include at least one rotor element carrying two conductive pads capable of making electrical contact between two diametrically opposite pads of a stator element, or two pads aligned in an axial direction of two adjacent stator elements.
- a stator element is generally constituted by a conductive element which, in a single piece, is molded by a plastic ring from which the studs (in the form of axially foldable legs) protrude internally and electrical connection terminals as well as the parts of connection project externally.
- This manufacturing method requires the installation of one or more cutting tools to make the necessary sections after overmolding, comprising a punch and a die.
- This cutting also constitutes a drawback because it generates relatively large drops of material by the very fact of the external location of the annular necessarily long connecting elements.
- the material used is often a precious metal (in which gold and / or silver enter for a large part) therefore expensive.
- the invention intends to remedy the drawbacks of the prior art on the one hand, by simplifying the tools necessary for the production of a stator element and on the other hand by allowing a significant saving of material.
- a stator element for a rotary electrical switch according to which a conductive lamellar crown is trapped in a substantially annular body of insulating plastic material by overmolding, said crown comprising, projecting from the outside said body connection terminals and, projecting inside said body a plurality of radial tabs intended to be folded axially to form contact pads; prior to the above overmolding, at least one zone of small width is housed in the crown part embedded in the plastic, the above overmolding then being provided on either side of said zone, with two recesses whose bottom is flush with said conductor and of which at least the dimension measured radially is greater than said width, and the continuity of said crown is interrupted in said zone by cutting it by means of a punch and a die formed by one of the abovementioned recesses .
- the invention also relates to a stator element resulting from the method which, in a first alternative embodiment comprises twelve studs, twelve terminals and twelve recesses through each of which the conductive ring is cut.
- the stator element has twelve studs, six terminals and eight punching recesses through at least two of which the conductive ring is cut.
- a lamellar crown 10 conductive (for example from a cut silver strip) having a plurality of radial tabs 11 separated from each other others by slots 12 and a plurality of connection terminals 13.
- This ring 10 is trapped in an insulating plastic body 20 molded onto the ring 10, of substantially annular shape so that the tabs 11 are disposed inside the body 20 internally limited by a cylindrical surface 21 and that the terminals 13 are located outside of the external surface 22 of the body (here delimiting a square seen in plan).
- Each of the radial slots 12 is of length such that it defines with the outer edge 10a of the crown 10 a zone of small width 14 to the right of which the body 20 is provided with upper 23 and lower 24 recesses axially aligned.
- the bottom of these recesses is flush with each of the faces of the crown 10 and their dimension measured radially (for example along the axis of a slot) is greater than the width of the above-mentioned zone 14.
- These recesses 23 24, as well as the orifices 25 which comprise at least two angles of the body 20, are produced at the time of overmolding by the installation of suitable cores or pins.
- the method of the invention consists in punching the part 14 of the crown 10 between a punch (not shown) guided by the recess 23 and a die constituted by the recess 24.
- the plastic material could very well play the role of a matrix if it has sufficient hardness characteristics, which is the case of plastics loaded with glass powder used in this technique.
- all the parts 14 or a part of them will be punched.
- the flaps 11 above are folded down (as indicated at 11 ′ in FIG. 2) so as to form axial stud surfaces.
- This alternative embodiment makes it possible to manufacture a stator comprising a stacking of different stator elements by their punching, finding in particular an application in a switching device controlled by a lock with several keys giving selective access to two, three, four or six circuits .
- the invention finds an iterative application in the field of electrical components. It is not limited to the description which has just been given. In particular, the number of pads and terminals of the stator can be varied.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Switches (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84402277T ATE28534T1 (de) | 1983-11-14 | 1984-11-12 | Verfahren zur herstellung eines statorelements fuer einen drehschalter und auf diese weise hergestelltes element. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8318024 | 1983-11-14 | ||
FR8318024A FR2554967B1 (fr) | 1983-11-14 | 1983-11-14 | Procede de fabrication d'un element de stator de commutateur rotatif et element issu du procede |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0142444A2 true EP0142444A2 (de) | 1985-05-22 |
EP0142444A3 EP0142444A3 (en) | 1985-06-26 |
EP0142444B1 EP0142444B1 (de) | 1987-07-22 |
Family
ID=9294058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84402277A Expired EP0142444B1 (de) | 1983-11-14 | 1984-11-12 | Verfahren zur Herstellung eines Statorelements für einen Drehschalter und auf diese Weise hergestelltes Element |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0142444B1 (de) |
AT (1) | ATE28534T1 (de) |
DE (1) | DE3464984D1 (de) |
FR (1) | FR2554967B1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB911472A (en) * | 1960-07-11 | 1962-11-28 | Mason Electric Corp | Method of making a rotary switch contact component |
GB936279A (en) * | 1959-12-07 | 1963-09-11 | Cts Corp | Improvements relating to electric switches |
US3132196A (en) * | 1961-05-24 | 1964-05-05 | Cts Corp | Method for molding an annular ring of insulating material to a flat metal strip |
FR2326020A1 (fr) * | 1975-09-29 | 1977-04-22 | Deltoer Marcel | Commutateur rotatif et procede de fabrication d'un tel commutateur |
-
1983
- 1983-11-14 FR FR8318024A patent/FR2554967B1/fr not_active Expired
-
1984
- 1984-11-12 DE DE8484402277T patent/DE3464984D1/de not_active Expired
- 1984-11-12 EP EP84402277A patent/EP0142444B1/de not_active Expired
- 1984-11-12 AT AT84402277T patent/ATE28534T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB936279A (en) * | 1959-12-07 | 1963-09-11 | Cts Corp | Improvements relating to electric switches |
GB911472A (en) * | 1960-07-11 | 1962-11-28 | Mason Electric Corp | Method of making a rotary switch contact component |
US3132196A (en) * | 1961-05-24 | 1964-05-05 | Cts Corp | Method for molding an annular ring of insulating material to a flat metal strip |
FR2326020A1 (fr) * | 1975-09-29 | 1977-04-22 | Deltoer Marcel | Commutateur rotatif et procede de fabrication d'un tel commutateur |
Also Published As
Publication number | Publication date |
---|---|
EP0142444A3 (en) | 1985-06-26 |
DE3464984D1 (en) | 1987-08-27 |
FR2554967B1 (fr) | 1986-04-11 |
EP0142444B1 (de) | 1987-07-22 |
ATE28534T1 (de) | 1987-08-15 |
FR2554967A1 (fr) | 1985-05-17 |
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