EP1162521B1 - Dispositif de commande à déclic et montre munie d'un tel dispositif - Google Patents

Dispositif de commande à déclic et montre munie d'un tel dispositif Download PDF

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Publication number
EP1162521B1
EP1162521B1 EP00202007A EP00202007A EP1162521B1 EP 1162521 B1 EP1162521 B1 EP 1162521B1 EP 00202007 A EP00202007 A EP 00202007A EP 00202007 A EP00202007 A EP 00202007A EP 1162521 B1 EP1162521 B1 EP 1162521B1
Authority
EP
European Patent Office
Prior art keywords
push
button
spring element
support
pusher
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
EP00202007A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1162521A1 (fr
Inventor
Baptist Wyssbrod
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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 ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to ES00202007T priority Critical patent/ES2340355T3/es
Priority to DE60044023T priority patent/DE60044023D1/de
Priority to AT00202007T priority patent/ATE461472T1/de
Priority to EP00202007A priority patent/EP1162521B1/fr
Publication of EP1162521A1 publication Critical patent/EP1162521A1/fr
Application granted granted Critical
Publication of EP1162521B1 publication Critical patent/EP1162521B1/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
    • G04C3/001—Electromechanical switches for setting or display
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/048—Operation exclusively by axial movement of a push-button, e.g. for chronographs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/02—Reversed domes

Definitions

  • the present invention relates to a click control device comprising a support, a pusher movably mounted on the support so as to have a translational stroke along an axis, and a spring element capable of exerting on the pusher a reactive force. which goes through a maximum during the stroke of the pusher.
  • the invention also relates to a watch comprising a box and a control device of this type.
  • Such a snap control device also called sudden action, is used in particular to actuate a contact blade of an electrical switch, in particular to control functions of a portable electronic device.
  • the pusher of such a device can also produce a purely mechanical control.
  • Such devices are used, for example, to control the starting and stopping of mechanical or electrical chronograph watches.
  • the click function causes the pusher to remain ineffective as long as the pressure exerted does not exceed a limit value of the reactive force, and after this limit is exceeded, the device suddenly changes state, because the pressure required to complete the function is less than this limit value. It is thus possible to start or stop a meter accurately.
  • the parts providing the click function are usually part of the chronograph mechanism and are fixed on a bridge or the stage of the movement.
  • the force to be overcome is generated by a jumper type device, with a bending spring cooperating with a cam, as provided for example by the patent. CH 642 220 .
  • Devices of this type require a large volume, which is a heavy handicap in a watch.
  • a type of snap-on spring illustrated for example in the U.S. Patent 4,234,769 is formed by a straight flexible blade which is held longitudinally curved by compression between two fixed stops.
  • this spring has two stable positions and, in a push-button control, this requires an additional return spring.
  • Another disadvantage is that permanent compression requires a fairly robust support that can be an annoying element in a small device such as a watch.
  • Patent documents US 3,928,741 and DE 23 60 167 discloses push-button controllers (10) which comprise a spring element comprising a sheet of elastic material interposed between the pusher and its support so as to exert on the pusher a reactive force.
  • the sheet of elastic material has at rest a curved or V-shaped section and comprises a central zone intended to rest against the pusher and a pair of support zones intended to rest against the support (or vice versa), so that the stroke of the pusher tends to bend the sheet of elastic material.
  • the control devices described in these two documents are not click devices. Indeed, the reactive force exerted by the spring element increases continuously over the entire stroke of the pusher.
  • An object of the present invention is to provide a control device with simple click and compact.
  • the device should be easy to manufacture and mount and reliable in operation.
  • the present invention relates, in a first aspect, to a click control device according to the features of claim 1.
  • an advantage of this arrangement is that the spring element does not need to be rigidly attached to the support, which therefore must not be particularly robust. It is sufficient that the bearing areas of the spring element are maintained in the correct locations, for example by the pusher or through a housing in which this element is freely fitted. In fact, the spring element need not be attached to the support or the pusher. Another advantage is that such an element can be very small, in particular not larger than the head of the pusher, and that the entire device can be manufactured and mounted at a very low price.
  • the latter comprises, in its central part, an orifice through which a rod of the pusher passes.
  • said pair of bearing zones is located on a concave face, and the medial zone is on a convex face of the spring element.
  • the support bears against the concave face and the pusher against the convex face.
  • the spring element is positioned relative to the support and the pusher. It comprises, for this purpose, cuts in the vicinity of its opposite ends in contact with the pusher. In addition, the latter is provided with protuberances engaged in these cuts to ensure the relative positioning of the spring element and the pusher.
  • the pusher itself can be guided in a conventional manner with respect to the support.
  • the shape of the spring element comprises two plane walls interconnected by a rounded portion.
  • This structure also makes it possible to guarantee a clear click and to control the force to be applied, so that, for the same model, it is practically the same from one room to another.
  • the present invention also relates to a watch provided with a box and a control device as defined above.
  • the box forms the support of the control device
  • the pusher has a head disposed outside the box and a rod engaged in a hole of the box and opening inside the latter.
  • the spring element is disposed in a recess of an outer face of the box and cooperates with the head of the pusher.
  • both the pusher head and the spring element of the control device can be elongated, preferably oval.
  • the device represented in the drawing comprises a support formed of a watch case 10, a pusher 12 mounted to move in translation along an axis AA on the box 10, and a spring element 14 interposed between the box 10 and the pusher 12.
  • the box 10 can be made of any solid material, for example metal or plastic. It comprises a middle part 16 and a bottom 17, which define a housing 18 in which is disposed a watch movement 20. In the watch described here, the bottom 17 forms the plate of the movement 20.
  • the middle part 16 is pierced with a hole cylindrical 22 whose axis, coincident with the axis AA, is oriented radially, connecting the housing 18 to the outside of the box 10.
  • the middle part 16 comprises on its outer surface an elongate recess 24 which the side wall 24a is for example in the form of an oval cylinder.
  • the bottom of the recess 24 has two opposite recesses 24b, adjacent to the wall 24a, and a convex central portion 24c having a spherical cap shape whose center is on the axis A-A of the pusher 12.
  • the pusher 12 comprises a cylindrical rod 26, preferably metal, engaged in the hole 22, and a head 28 preferably made of plastic, fixed to the rod 26 by overmolding and disposed outside the box 10.
  • the rod 26 has a diameter slightly smaller than the hole 22, so that it can slide freely. It is provided with two grooves 26a and 26b arranged so that, when the pusher 12 is in place, the groove 26a is inside the housing 18, flush with the inner wall of the middle part 16, and the groove 26b in the middle part of the hole 22.
  • a leaf spring 30, part of a metal piece 29 fixed on the movement and connected to one of the poles of the electric battery supplying the movement 20, has a notch 31 to engage the groove 26a and thus prevent the pusher 12 to be removed from the hole 22. It also provides an electrical contact function, its free end being pressed against a pin 32 of a printed circuit board 33 fixed to the bottom 17, when the pusher 12 is hurry enough, as will be explained later.
  • An O-ring 34 disposed in the groove 26b, is in contact with the wall of the hole 22 all around its circumference, to seal the passage of the pusher 12 in the hole 22 of the middle part 16.
  • the head 28 of the pusher 12 has an elongate shape that corresponds to that of the recess 24, so that it can slide but can not rotate. It has here a cap shape having a convex outer portion 28a, integral with the rod 26, and an oval cylindrical portion 28b extending from the outer portion towards the middle 16, inside the recess 24.
  • the head 28 has a concave inner surface 28d in the form of a truncated cone.
  • the cylindrical portion 28b is provided on its inner face with two protuberances formed by fingers 28c. extending respectively from the head inside each recess 24b and whose function will be specified later.
  • the spring 14 is formed of a thin sheet of stainless steel, generally oval in shape and provided at its center with a round orifice 14a whose diameter is slightly greater than that of the rod 26, so that the latter can slide freely.
  • the oval shape has a major axis B-B and a small axis C-C, these axes being perpendicular to each other and perpendicular to the axis A-A of the hole 22.
  • the sheet forming the spring 14 is notched at both ends of the major axis of the oval, to form cutouts 14b for receiving the fingers 28c. It is curved or folded so as to have a shape inscribed on a geometric surface generated by a generatrix parallel to the longitudinal axis B-B, with a concave face 14c and a convex face 14d.
  • the spring has a generally roof-like shape which has two flat walls interconnected by a rounded portion, thus forming a substantially V-shaped cross section. It will be noted that the spring has a symmetrical shape. rotation about the axis AA, as well as a symmetry with respect to its median longitudinal plane passing through the axes AA and BB.
  • the spring element 14 is disposed in the recess 24, so that the rod 26 passes through the orifice 14a when it is engaged in the hole 22 and that its concave face 14c bears against the head 28, on at least one pair of bearing zones 36 located near the ends of its oval shape, while its convex face 14d bears against the central portion 24c of the support by at least one median zone 38 near the stem of the button.
  • the spring element 14 is positioned relative to the pusher 12 by engagement of the fingers 28c in the cutouts 14b, so that it does not rub against the side wall 24a.
  • the bearing areas of the spring 14 against the head 28 are along the edges of the cuts 14b. In the initial position represented in figure 1 there are in fact two of these support zones 36 on either side of each cut 14b. The convex face of the central portion of the spring 14 rests against the box 10 on two median areas 38 located on either side of the orifice 14a.
  • the spring 14 behaves like a beam supported in its middle part and subjected to a force at its two ends.
  • the beam tends to flex on the one hand in the direction of its length, but also to flatten in its transverse direction CC because of the tensile stresses that act along its two edges parallel to BB.
  • the curved or V shape of the spring tends to open.
  • the arrangement of the spring and its support zones is symmetrical with respect to its median longitudinal plane, the forces and deformations are also symmetrical and require no fastening means to stabilize the spring.
  • the reaction force of the beam is a function of its deflection and the static moment of inertia of its cross section. But this moment of inertia is all the higher as the V is closed. In other words, by subjecting the beam to a sufficient force, the V deviates during the stroke of the pusher, which reduces the moment of static inertia. There comes a moment beyond which the force required to bend the beam decreases as the arrow increases. Past this point, the maintenance of the pressure causes a sudden depression of the pusher, which generates the click function. The leaf spring 30 then abruptly comes into contact with the pin 32, thus ensuring the desired electrical contact.
  • the transverse spacing between the two bearing zones 36 at each end of the spring 14 also contributes to flatten the cross section thereof, but this complementary effect is not essential.
  • the pusher By releasing the pusher, it returns alone in its place, under the combined action of the spring 14 and the leaf spring 30.
  • the spring 14 provides a restoring force over the entire stroke of the pusher, the force of the spring- blade 30 is not essential. The latter could also be recalled by the spring 14 via the rod 26.
  • the spring 14 described above can not only be manufactured inexpensively, but also is very easy to assemble and does not require a great strength of the support, since the greatest force applied to it is the pressure on the pusher. If this pressure exceeds the maximum reactive force of the spring, it will be absorbed by the fingers 28c abutting against the watch case.
  • the spring element could be turned over if the corresponding bearing surfaces of the box and the pusher are reversed. Many other solutions are possible.
  • the spring element could for example have a round or rectangular shape, or have a left surface. In all cases, it is necessary that the static moment of inertia decreases when the element is subjected to bending. This condition is satisfied when the section of the element in a plane defined by the axes AA and CC, which is perpendicular to the axis BB along which the bending takes place, is curved in a rest position, it is that is, when the element is not subjected to elastic deformation.
  • the spring element could also be disposed inside the box, or in a housing made in the box and intended for this purpose. On the other hand, the spring element could be extended by one or more blades making themselves the electrical contact in place of the leaf spring 30.
  • the device could also be used for pushbuttons used in other devices than watches, for example telephones or computers.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Push-Button Switches (AREA)
  • Clamps And Clips (AREA)
  • Electromechanical Clocks (AREA)
  • Telephone Function (AREA)
  • Lock And Its Accessories (AREA)
EP00202007A 2000-06-07 2000-06-07 Dispositif de commande à déclic et montre munie d'un tel dispositif Expired - Lifetime EP1162521B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES00202007T ES2340355T3 (es) 2000-06-07 2000-06-07 Dispositivo de mando de trinquete y reloj provisto de tal dispositivo.
DE60044023T DE60044023D1 (de) 2000-06-07 2000-06-07 Betätigungsvorrichtung mit Schnappeffekt und mit solcher Vorrichtung ausgerüstete Uhr
AT00202007T ATE461472T1 (de) 2000-06-07 2000-06-07 Betätigungsvorrichtung mit schnappeffekt und mit solcher vorrichtung ausgerüstete uhr
EP00202007A EP1162521B1 (fr) 2000-06-07 2000-06-07 Dispositif de commande à déclic et montre munie d'un tel dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00202007A EP1162521B1 (fr) 2000-06-07 2000-06-07 Dispositif de commande à déclic et montre munie d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP1162521A1 EP1162521A1 (fr) 2001-12-12
EP1162521B1 true EP1162521B1 (fr) 2010-03-17

Family

ID=8171608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202007A Expired - Lifetime EP1162521B1 (fr) 2000-06-07 2000-06-07 Dispositif de commande à déclic et montre munie d'un tel dispositif

Country Status (4)

Country Link
EP (1) EP1162521B1 (es)
AT (1) ATE461472T1 (es)
DE (1) DE60044023D1 (es)
ES (1) ES2340355T3 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2851845B1 (fr) * 2003-02-27 2006-07-14 Itt Mfg Enterprises Inc Dispositif de commutation pouvant etre equipe d'une source lumineuse centrale, et touche de clavier d'appareil electrique comprenant un tel dispositif de commutation.
JP4445837B2 (ja) * 2004-04-21 2010-04-07 ホシデン株式会社 プッシュオンスイッチ
CN100501890C (zh) * 2004-04-21 2009-06-17 星电株式会社 按压接通开关
EP4092490A1 (fr) * 2021-05-19 2022-11-23 Meco S.A. Dispositif de commande d'un mouvement horloger avec retour tactile et pièce d'horlogerie, notamment montre, comprenant un tel dispositif

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1157462A (fr) * 1956-08-24 1958-05-29 Jaeger Ets Ed Dispositif de manoeuvre à déclenchement brusque
DE2360167A1 (de) * 1973-12-03 1975-06-05 Marquardt J & J Schalter
US3928741A (en) * 1974-09-16 1975-12-23 Texas Instruments Inc Momentary contact single pole switch
DE2557703C3 (de) * 1975-12-20 1979-03-15 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Druckschalter
DK142007B (da) 1978-02-22 1980-08-04 Mec Mekanisk Elek Sk Compagni Elektrisk omskifter med klikfjeder.
FR2420834A1 (fr) 1978-03-24 1979-10-19 Suisse Horlogerie Poussoir commutateur pour piece d'horlogerie
DE3928650A1 (de) 1989-08-30 1991-03-28 Stocko Metallwarenfab Henkels Elektrischer druckschalter

Also Published As

Publication number Publication date
DE60044023D1 (de) 2010-04-29
EP1162521A1 (fr) 2001-12-12
ATE461472T1 (de) 2010-04-15
ES2340355T3 (es) 2010-06-02

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