EP0225277A1 - Elektrische Kontaktvorrichtung für Uhren - Google Patents
Elektrische Kontaktvorrichtung für Uhren Download PDFInfo
- Publication number
- EP0225277A1 EP0225277A1 EP86810423A EP86810423A EP0225277A1 EP 0225277 A1 EP0225277 A1 EP 0225277A1 EP 86810423 A EP86810423 A EP 86810423A EP 86810423 A EP86810423 A EP 86810423A EP 0225277 A1 EP0225277 A1 EP 0225277A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- contact
- branches
- disc
- switch according
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/001—Electromechanical switches for setting or display
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
-
- 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
- H01H19/54—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 the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
- H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/016—Application timepiece
Definitions
- the object of the present invention is to produce a particularly thin electrical switch which does not create disturbing torques on its axis and which is particularly intended for controlling time functions. This object is achieved according to the characterizing part of claim 1.
- Each switch has a contact blade 1 having two branches 1a and 1b, the two branches being provided at their ends with a contact 2.
- the blade 1 has a hole in the center, and its central part is embedded between a mobile 3 having a toothing 4 and a barrel 5.
- the parts 1 - 5 are mounted at a predetermined distance relative to a metal disc 6 illustrated diagrammatically in FIG. 3 covered with a disc of insulating material 7 inside, with the exception of an island 8 which extends radially inwards. It is clearly visible especially in fig.
- the contact 2a is likely to come into contact with the conductive island 8 of the disc 6, while the contact 2b is always located on the insulating part 7.
- the switch is therefore closed when the contact 2a slides on the island 8 during the rotation of the contact blade 1 with the mobile 3 which is for example the hour wheel.
- Fig. 2 shows the shape of the contact blade 1 without external load, that is to say before mounting.
- Fig. 3 shows the position and shape of the contact blade after assembly of the device.
- FIGS. 5 and 6 differs from the embodiment according to FIGS. 1 to 3 by the fact that the section of the contact blade 1 is weakened at the location of the embedding of his arms through holes 9a resp. 9b. It is accepted that the almost circular central part of the contact blade 1 is practically rigid and that the elastic deformation of the contact blade in its assembled state is practically limited to the arms. It is clear from fig. 5 that the hole 9a in the longer arm 1a is smaller than the hole 9b in the arm 1b. That is to say that the weakening of the section respectively of the moment of inertia of the blade 1a is less than the weakening of the blade 2b.
- the solution illustrated can be provided by the introduction of a shorter blade, the friction path of which passes outside the contact 8. If the two blades have, apart from their length, all the other identical characteristics, the shorter will exert, for the same deformation, a different bearing force than that of the longer. There is therefore partial compensation and the problem mentioned above is only slightly or not improved.
- a solution valid only in a well-defined case, can be found by arranging blades of identical section in such a way that, for the nominal working conditions, the respective arrows f are different, the couples c being, themselves, identical.
- Fig. 3 shows the contact spring of FIGS. 1 and 2 in its working position. It is noted that, due to the deformation due to the reinforcement, the points of contact with the disc may not be those which have been provided.
- the application of formula 1 above makes it possible to theoretically trace the shapes of the deformed blades and to be convinced that, especially in the case of small thicknesses, the fulcrum can vary greatly, for small differences in total height.
- a weakening in a given zone causes, as one can be convinced by applying formula 2, greater deformation in this zone. This deformation is all the greater as the weakening is carried out at the places where the stress is greater, the maximum being achieved for a weakening during the embedding.
- the branch section weakening or shrinking can be achieved by other measures.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH431185 | 1985-10-04 | ||
CH4311/85 | 1985-10-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0225277A1 true EP0225277A1 (de) | 1987-06-10 |
EP0225277B1 EP0225277B1 (de) | 1989-11-23 |
Family
ID=4273715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86810423A Expired EP0225277B1 (de) | 1985-10-04 | 1986-09-26 | Elektrische Kontaktvorrichtung für Uhren |
Country Status (4)
Country | Link |
---|---|
US (1) | US4780583A (de) |
EP (1) | EP0225277B1 (de) |
DE (1) | DE3667112D1 (de) |
HK (1) | HK108390A (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE638269C (de) * | 1934-05-30 | 1936-11-12 | Siemens & Halske Akt Ges | Drehschalter, insbesondere fuer Messzwecke, mit einer feststehenden Achse und einem um diese drehbaren Tragkoerper fuer auf flachen Kontaktbahnen schleifende Stromabnehmer |
GB456625A (en) * | 1935-02-19 | 1936-11-12 | Cinch Mfg Corp | Improvements in and relating to electrical switches of the selector type |
US3611702A (en) * | 1969-05-08 | 1971-10-12 | Paolo Spadini | Electric alarm timepiece |
JPS5246123Y2 (de) * | 1972-06-09 | 1977-10-20 | ||
FR2415328A1 (fr) * | 1978-01-19 | 1979-08-17 | Gillette Co | Dispositif d'horlogerie avec commutateur de sonnerie de reveil |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1739003A (en) * | 1927-12-06 | 1929-12-10 | Addison R Klingensmith | Combination lock switch |
US1820937A (en) * | 1928-01-09 | 1931-09-01 | Mildred M Daniels | Burglar alarm switch device |
US2079003A (en) * | 1936-07-08 | 1937-05-04 | Dewar Mfg Company | Electric switch device |
US2340615A (en) * | 1942-03-20 | 1944-02-01 | Radio Patents Corp | Snap action device |
US2701475A (en) * | 1950-04-17 | 1955-02-08 | Honeywell Regulator Co | Snap acting device |
US3024334A (en) * | 1958-09-12 | 1962-03-06 | Hurletron Inc | Ball contacting device |
DE1215800B (de) * | 1960-11-11 | 1966-05-05 | Joseph Gisiger Staehli | Steuergeraet |
GB1200889A (en) * | 1966-12-09 | 1970-08-05 | Lucas Industries Ltd | Means for making an electrical connection to a flexible printed circuit |
US3801753A (en) * | 1969-06-17 | 1974-04-02 | Gaf Corp | Dial type wafer printed circuit switch |
GB1391637A (en) * | 1971-12-27 | 1975-04-23 | Suwa Seikosha Kk | Electronic timepieces and electronic calculators |
US3869586A (en) * | 1974-03-28 | 1975-03-04 | Cutter Hammer In | Miniature wrist watch switch |
US3970986A (en) * | 1975-01-30 | 1976-07-20 | Motorola, Inc. | Thick film rotary switch |
US4400597A (en) * | 1982-02-16 | 1983-08-23 | Eeco Incorporated | Axial cam rotary switch |
-
1986
- 1986-09-26 EP EP86810423A patent/EP0225277B1/de not_active Expired
- 1986-09-26 DE DE8686810423T patent/DE3667112D1/de not_active Expired
- 1986-10-03 US US06/915,014 patent/US4780583A/en not_active Expired - Fee Related
-
1990
- 1990-12-18 HK HK1083/90A patent/HK108390A/xx unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE638269C (de) * | 1934-05-30 | 1936-11-12 | Siemens & Halske Akt Ges | Drehschalter, insbesondere fuer Messzwecke, mit einer feststehenden Achse und einem um diese drehbaren Tragkoerper fuer auf flachen Kontaktbahnen schleifende Stromabnehmer |
GB456625A (en) * | 1935-02-19 | 1936-11-12 | Cinch Mfg Corp | Improvements in and relating to electrical switches of the selector type |
US3611702A (en) * | 1969-05-08 | 1971-10-12 | Paolo Spadini | Electric alarm timepiece |
JPS5246123Y2 (de) * | 1972-06-09 | 1977-10-20 | ||
FR2415328A1 (fr) * | 1978-01-19 | 1979-08-17 | Gillette Co | Dispositif d'horlogerie avec commutateur de sonnerie de reveil |
Also Published As
Publication number | Publication date |
---|---|
US4780583A (en) | 1988-10-25 |
EP0225277B1 (de) | 1989-11-23 |
DE3667112D1 (en) | 1989-12-28 |
HK108390A (en) | 1990-12-28 |
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