EP0420796B1 - Pièce d'horlogerie électronique - Google Patents

Pièce d'horlogerie électronique Download PDF

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Publication number
EP0420796B1
EP0420796B1 EP90810659A EP90810659A EP0420796B1 EP 0420796 B1 EP0420796 B1 EP 0420796B1 EP 90810659 A EP90810659 A EP 90810659A EP 90810659 A EP90810659 A EP 90810659A EP 0420796 B1 EP0420796 B1 EP 0420796B1
Authority
EP
European Patent Office
Prior art keywords
movement
accumulator
metal
dial
case
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.)
Expired - Lifetime
Application number
EP90810659A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0420796A1 (fr
Inventor
Bernard-Eric Mathez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lemrich and Cie SA
Original Assignee
Lemrich and Cie SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lemrich and Cie SA filed Critical Lemrich and Cie SA
Publication of EP0420796A1 publication Critical patent/EP0420796A1/fr
Application granted granted Critical
Publication of EP0420796B1 publication Critical patent/EP0420796B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source

Definitions

  • the subject of the present invention is an electronic timepiece with analog display comprising a case provided with a crystal and containing a dial, an electronic movement the metallic underside of which is electrically connected to one of the circuit supply terminals.
  • electronic with the exception of a metal tab electrically connected to the other supply terminal, this movement being maintained in the housing by a casing ring made of insulating synthetic material, an accumulator for supplying the movement and the cells photovoltaic for the charge of the accumulator.
  • the object of the invention is to produce a timepiece, in particular electronic with supply by photovoltaic cells having a large power reserve, capable of being manufactured at low cost even in small series, that is to say in using movements offered on the market in large quantities.
  • the electronic timepiece according to the invention is characterized in that the case is made of metal or contains a metal container, that the accumulator is housed under the movement, in the casing ring, and that the upper face of the accumulator, opposite the movement, is isolated from the movement by an insulating sheet crossed only by said metal tongue of the movement, that the photovoltaic cells and the components of the electrical circuit connecting the photovoltaic cells to the accumulator are mounted on the casing ring, cutouts being provided in the dial, opposite the photovoltaic cells.
  • the casing ring is therefore used simultaneously as a housing for the accumulator, the diameter of which can be at least as large as the largest dimension. movement. The capacity of such an accumulator can be considerable.
  • the accumulator is preferably mounted between two thin metal plates on which the terminals of the diode are welded and one of the terminals of the capacitor of the charging circuit of the accumulator.
  • the assembly is held elastically under pressure by the bottom of the box, removable or not.
  • the invention is particularly interesting for the production of a wristwatch, but is also applicable to clocks and clocks.
  • Figure 1 is a plan view of a wristwatch.
  • Figure 2 is an exploded view partially in axial section.
  • the watch shown comprises a case made up of a metal bezel 1, a lens 2 fixed in a notch of glass in the bezel 1 and a metal bottom 3 fixed in notch in the bezel 1.
  • the middle-bezel 1 is provided with two pairs of horns 4, 5 and 6, 7 for fixing a bracelet. Below the notch, the middle part 1 has a bearing surface 8, the rest of the interior of the middle part being simply formed by a cylindrical face 9.
  • the movement 13 is any commercial movement, for example a 6 3/4 x 8 movement.
  • Such a movement has a battery compartment in which there is a contact tab 14.
  • This tab 14 is here folded down so as to make protrusion outside the metal cage of the movement.
  • This movement is housed in a casing ring 15 made of synthetic material, the outside diameter of which is equal to the diameter of the dial 10, that is to say to the inside diameter of the middle part of the bezel 1.
  • a metal plate 16 Inside the casing ring 15, at a level corresponding to the thickness of the movement 13, there is a metal plate 16 in which are cut elastic tongues 17 directed downwards.
  • the upper face of the metal plate 16 is covered with an insulating sheet 18, however having a hole in the area 19 located opposite the tongue 14 of the movement.
  • the casing ring 15 has, under its upper face, a number of slots 20 in each of which is housed a photovoltaic cell 21.
  • the dial 10 is also provided with slots 22, in number equal to the number of slots 20 and located respectively opposite each of the slots 20, so that the photovoltaic cells are visible . As can be seen in FIG. 1, there are six photovoltaic cells 21 arranged between the hourly indexes of the dial.
  • the periphery of the casing ring 15 has clearances and grooves such as 23, 24 for housing the diode 25 and the capacitor of the charging circuit of the accumulator and for the passage of the conductive wire 26 connecting the cells photovoltaic between them and the capacitor.
  • One of the welding points 27 of the conductive wire has been shown to one of the photovoltaic cells 21. It is noted that this welding point 27 is hidden by the bearing 8.
  • the inner part of the ring 15 located below the metal plate 16 constitutes a housing for an accumulator 28 in the form of a circular pellet. Under this accumulator is disposed a second metal plate 29 similar to the plate 16, but of diameter equal to the outside diameter of the ring 15. This plate 29 is also provided with cut elastic tabs 30 which come to bear against the underside of the accumulator 28.
  • the terminals of the diode 25 are respectively soldered at 31 to the plate 16 and at 32 to the plate 29.
  • One of the terminals of the capacitor is soldered to the plate 29 at a point 33 close to point 32.
  • the dial 10, the casing ring 15 with the movement and the accumulator, and the metal plate 29 are held in elastic support against the bearing 8 of the middle-bezel by the bottom 3.
  • the electrical contacts are ensured by the elastic tabs 14, 17 and 30, as well as by the bottom 3, the middle-bezel 1 and the dial 10.
  • the watch In practice before assembly, the watch consists only of the following four components: the middle-bezel 1 with its crystal 2, the movement 13 with the dial 10 and the switch, the ring 15 with the accumulator 28 between the plates 16 and 29 and the back cover 3.
  • the assembly is carried out simply by successively or simultaneously introducing the second and third components in the middle part, then fixing the back cover.
  • the components of the watch could also be mounted in a box in the shape of a cap, that is to say whose bottom is irremovable.
  • the diode and the capacitor could be housed in recesses provided on the upper face or the lower face of the ring.
  • the photovoltaic cells could simultaneously constitute the hourly indexes of the dial.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromechanical Clocks (AREA)
  • Electric Clocks (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Communication Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
EP90810659A 1989-09-26 1990-08-30 Pièce d'horlogerie électronique Expired - Lifetime EP0420796B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3487/89A CH677170B5 (enrdf_load_stackoverflow) 1989-09-26 1989-09-26
CH3487/89 1989-09-26

Publications (2)

Publication Number Publication Date
EP0420796A1 EP0420796A1 (fr) 1991-04-03
EP0420796B1 true EP0420796B1 (fr) 1993-04-14

Family

ID=4257055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810659A Expired - Lifetime EP0420796B1 (fr) 1989-09-26 1990-08-30 Pièce d'horlogerie électronique

Country Status (5)

Country Link
EP (1) EP0420796B1 (enrdf_load_stackoverflow)
JP (1) JPH03242596A (enrdf_load_stackoverflow)
KR (1) KR950008434B1 (enrdf_load_stackoverflow)
CH (1) CH677170B5 (enrdf_load_stackoverflow)
DE (1) DE69001343T2 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4057081A1 (fr) * 2021-03-12 2022-09-14 The Swatch Group Research and Development Ltd Montre solaire comprenant un dispositif d'obturation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011149364A (ja) 2010-01-22 2011-08-04 Keihin Corp 燃料噴射制御装置及び方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194136A2 (en) * 1985-03-05 1986-09-10 Seiko Instruments Inc. Electronic timepiece with a solar cell
EP0198390A2 (de) * 1985-04-11 1986-10-22 Junghans Uhren Gmbh Solaruhr und Uhrwerk für eine Solaruhr
EP0241202A2 (en) * 1986-04-08 1987-10-14 Seiko Instruments Inc. Analog electronic timepiece with charging function

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH320421A (fr) * 1954-05-20 1957-03-31 Schild Sa A Montre électrique
JPS5214271A (en) * 1975-07-24 1977-02-03 Fujimura Tekkosho:Kk Strip metal material processing apparatus
FR2349868A1 (fr) * 1976-04-29 1977-11-25 Horlogerie Cie Europ Procede de fabrication d'une montre a pile, et montre resultant de l'execution de ce procede
JPS52141272A (en) * 1976-05-20 1977-11-25 Seiko Epson Corp Solar cell clock
JPS5355165A (en) * 1976-10-29 1978-05-19 Seiko Epson Corp Structure of dial for solar battery watch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0194136A2 (en) * 1985-03-05 1986-09-10 Seiko Instruments Inc. Electronic timepiece with a solar cell
EP0198390A2 (de) * 1985-04-11 1986-10-22 Junghans Uhren Gmbh Solaruhr und Uhrwerk für eine Solaruhr
EP0241202A2 (en) * 1986-04-08 1987-10-14 Seiko Instruments Inc. Analog electronic timepiece with charging function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4057081A1 (fr) * 2021-03-12 2022-09-14 The Swatch Group Research and Development Ltd Montre solaire comprenant un dispositif d'obturation

Also Published As

Publication number Publication date
JPH03242596A (ja) 1991-10-29
CH677170GA3 (enrdf_load_stackoverflow) 1991-04-30
KR950008434B1 (ko) 1995-07-31
CH677170B5 (enrdf_load_stackoverflow) 1991-10-31
EP0420796A1 (fr) 1991-04-03
DE69001343T2 (de) 1993-10-28
KR910006805A (ko) 1991-04-29
DE69001343D1 (de) 1993-05-19

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