US3863438A - Device for insuring the tightness of a timepiece casing - Google Patents

Device for insuring the tightness of a timepiece casing Download PDF

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Publication number
US3863438A
US3863438A US482568A US48256874A US3863438A US 3863438 A US3863438 A US 3863438A US 482568 A US482568 A US 482568A US 48256874 A US48256874 A US 48256874A US 3863438 A US3863438 A US 3863438A
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Prior art keywords
fitting
ring
profile
tightness
shaped
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US482568A
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Rene Soguel
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Individual
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    • 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/10—Hermetic sealing of openings, joints, passages or slits of winding stems

Definitions

  • a device of this type includes a part which is fastened to the casing, a movable part attached to the stem and a ring-shaped tightness fitting suited for undergoing an elastic deformation and fitted together with the mentioned parts around a cylindrical surface of one of them and in a ring-shaped bed of the other, in which it is held between ring-shaped surface sections located in this bed.
  • This oblique pressure also implied a relatively strong radial pressure which, since a tightening occurred which is a little too strong, on one hand, unfavorably increased the opposed resistance by the crown to a rotating movement which one wanted to give it, and on the other hand, could tend to cause a crushing, in fact, a rupture of the tightness packing.
  • a tightness packing is almost completely crammed in a bed of the crown, which results in many disadvantages, such as the unfitness to tolerate a certain eccentricity, a very strong resistance with respect to the rotation and especially a wear and a deformation which eventually in most cases caused ruptures or deteriorations of the tightness fitting.
  • the mentioned tightness fitting has a profile the height of which in radial direction of its ring shape is approximately at least equal to its width in axial direction of its ring shape
  • the mentioned ring-shaped surface sections of one of the parts which hold the tightness fitting are at least approximately axially formed opposite, on both sides, of the fitting on which they exercise an axial holding pressure substantially free from the radial component, since the mentioned ring-shaped surface sections are defined on ring-shaped projections which stand out axially toward the fitting in order to only set up its axial holding between two opposite ringshaped holding zones which are narrow with regard to the mentioned height of the profile of the fitting and beside which there remain non-holding zones, since the mentioned holding tends to cause an extension of this height,
  • the tightness fitting contains a radial retention ring arranged around at least one body of the elastically deformable fitting in order to restrain the mentioned radial expansion toward the outside so as to make it act in the direction of the interior against the mentioned cylindrical surface around which the mentioned fitting is engaged, while the mentioned ring is in direct contact with none of the mentioned parts,
  • the mentioned ring-shaped surface sections axially hold the tightness fitting on the mentioned ring-shaped zones approximately opposite the center of the height of the profile of the fitting.
  • the mentioned ring has a flat elongated profile and surrounds a body of the tightness fitting having the shape of an O-ring or the shape of a square-section or rectangular-section ring.
  • Another object of the invention is to furnish a technically more developed construction of the device in which the tightness fitting contains two fitting bodies made of an elastic material, the mentioned ring, made of metal or a plastic material which is harder than the bodies of the fitting, having a T-profile the foot of which returns radially toward the interior at least until it is at right angles with the ring-shaped holding zones, and the two mentioned bodies of the fitting being located on both sides of the foot of the T, each respectively under a wing of the profile in the T.
  • the two bodies of the fitting can, in a simple way, have a rectangular or square profile having a height, in radial direction, which is superior or equal to their thickness, in axial direction, thus making it possible to obtain these bodies of the tightness fitting cheaply by cutting a sheet of the corresponding thickness.
  • a winding crown which is integrally movable with the mentioned stem and in which a bed is formed by a hollowing arranged coaxially in the body of the crown and which an encased disk closes laterally,
  • the mentioned tightness fitting has a profile the height of which, in radial direction of its ring shape is approximately at least equal to its width in axial direction of its ring shape, and which is held between ring-shaped surface sections located in the mentioned bed, both by the bottom of the mentioned hollowing in the body of the crown and by the mentioned encased disk,
  • the mentioned ring-shaped surface sections which hold the tightness fitting are at least approximately axially opposite, on both sides, of the fitting on which they exercise an axial holding pressure substantially free of the radial component, the mentioned ring-shaped surface sections being defined by ring-shaped projections which stand out axially toward the fitting in order to only set up its axial holding between two opposed ringshaped holding zones which are narrow with regard to the mentioned height of the profile of the fitting and next to which there exist non-holding zones since the mentioned holding tends to cause an extension of this height,
  • the tightness fitting contains a radial retention ring arranged around at least one body of the elastically deformable fitting in order to restrain the mentioned radial expansion toward the exterior so as to make it act in the direction of the interior against the mentioned cylindrical surface of the tube while the mentioned ring is in direct contact neither with the tube nor with the mentioned crown.
  • the mentioned tightness fitting preferably contains two fitting bodies made of an elastic material, one of which has a circular profile and the other one of which has a rectangular profile, the height of each of the two profiles being greater than their thickness, the mentioned ring, made of metal or a plastic material which is harder than the body of the fitting having a T-profile the foot of which returns radially toward the interior at least until it'is at right angles with the mentioned ring-shaped holding zones, and the two mentioned bodies of the fitting being located on both sides of the foot of the T, each respectively under a wind of the profile in the T.
  • the foot of this T-profile to contain, according to an object of the invention, at least on one side, triangular cut and aligned strips in order to, by penetration, hold in place a mentioned body of the fitting which has a rectangular profile, while the other side can also advantageously have a recess assisting the assembling of the mentioned ring with a mentioned body of the fitting having a circular profile.
  • FIG. 1 shows a section of a tightness device of a winding crown around a tube, in a simple construction, the left and right parts of the figure showing two variants of this construction, on the left with a body of the tightness fitting having the shape of an O-ring, and on the right, with a body of the tightness fitting having the shape of a ring with a rectangular profile,
  • FIG. 2 in a view similar to that of FIG. 1, shows another construction of a tightness device of a winding crown around a tube, the tightness fitting of which contains two bodies of the tightness fitting of rectangular section assembled under the wings of a ring with a T- profile,
  • FIG. 3 shows another construction of a tightness device ofa winding crown around a tube, having the same general construction as the one according to FIG. 2 but containing two tightness bodiesof different shapes,
  • FIG. 4 at a larger scale, shows a section of a winding crown provided with an encased disk which can be used in the constructions according to FIGS. 1 to 3,
  • FIG. 5 is a view similar to that of FIG. 4 showing how the winding crown, as a variant, can also be shaped
  • FIG. 6 is a perspective view showing a detail of the ring contained in the tightness fitting in the case of the construction according to FIG. I and
  • FIG. 7 is a perspective view showing two details of the ring contained in the tightness fitting in the case of the construction according to FIG. 3.
  • FIG. 1 shows a winder crown 2 in the regular way screwed on a winder stem 4, in the interior of an integral tube 6 of the casing of a watch (not shown), the crown 2, in the known manner, showing a spout 14 which is inserted into the inside of the tube 6 to set up, in the usual manner, the integrality by the screwing of the crown 2 with the stem 4.
  • the body of the crown 12 contains a ring-shaped bed 18 in which a ring-shaped tightness fitting 8 is located (according to the variant of the left part of FIG. 1) or 8' (according to the variant of the right part of FIG. 1).
  • This tightness fitting bears on the exterior surface 10 of the tube 6, and it is, in order to assure a suitable tightness pressure on this surface 10, arranged in a special way in the interior of the bed 18.
  • the latter is placed in the crown 2 by means of a ring-shaped hollowing with a special profile laterally closed by an encased disk 16.
  • the bottom of the hollowing contains, set up in the body 12 of the crown, a ring-shaped projection 20 advancing in the direction of the encased disk 16. With respect to it, this disk shows a ring-shaped projection 22 projecting into the direction of the ring-shaped projection 20 and facing it.
  • the ring-shaped surface sections 24 and 26 which are shown opposite each other respectively through the projection 20 and the projection 22, laterally, i.e., in axial direction and without radial component, hold an elastic body of the tightness fitting 28 (left variant) or 28' (right variant) which thus receives a lateral holding pressure judiciously fixed approximately at the center of the height (i.e., of the radially measured dimension of the profile of the body of the fitting 28 or 28).
  • the tightness fitting 8 or 8 contains a ring 30, made of metal or possibly a plastic material which is considerably harder than the body of the fitting 28 or 28 and which surrounds the body of the fitting and prevents it from expanding against the exterior.
  • the holding pressure by the ring-shaped surface sections 24 and 26 is manifested therefore by a tendency to increase the height exteriorly against the ring 30 and interiorly against the cylindrical surface in a balanced manner.
  • the shape which one has intentionally given to the projections 20 and 22 has the result that the surface holding sections 24 and 26 remain completely limited whatever the holding degree and the profile given the body of the fitting 28 or 28' outside the holding zones.
  • the dimensioning of the projections 22 and the shape of the body of the fitting 28 or 28', taking into account the diameter of the cylindrical surface 10, are such that, when the crown 2 is set in rotation with regard to the tube 6, the body of the tightness fitting 28 or 28, and with it the ring 30, i.e., the entire tightness fitting 8 or 8', remains integral with the tube 6, the sliding being carried out with regard to the ring-shaped surface sections 24 and 26 of the projections 20 and 22.
  • the ring 30 always stays fixed with regard to the body of the fitting which it encloses; if there is any eccentricity, it is displaced more or less in the direction of the lateral surface 19 of the bed 18, but the provided play is sufficient (as one sees on the drawing) so that this displacement never results in a friction of the ring 30 against the wall 19.
  • the body of the tightness fitting On the right part of FIG. 1, one shows the body of the tightness fitting as being rectangular (approximately square); the slight deformation of the profile which one observes is due to the radial tightening, the introduction of the tube into the interior of the tightness fitting necessarily gives to this deformation the course shown in FIG. 1.
  • the ring 30 is the same for the tightness fit ting 8' in the variant shown in the right part of FIG. 1 and for the tightness fitting 8 in the variant shown in the left part of FIG. I.
  • the tightness fitting 8, with the elastic body of rectangular section, is particularly adequate for compensating eccentricities.
  • the tightness fitting is here constructed in a different manner and contains instead of the body 8 or 8 and the ring with a flat profile 30, two rectangular or square bodies of the tightness fitting 36 and 38 surrounded by a ring 40 with a T-profile.
  • the two tightness bodies 36 and 38 are located on both sides of the foot of the T- profile of the ring 40, under its wings.
  • the construction according to FIG. 2 permits an easy manufacturing of the bodies of the fitting, which, being able to be not very thick, can be cut without difficulties from a sheet of an adequate elastic rubber (or plastic) material.
  • the double friction around the surface of the tube assures a particularly good tightness and an excellent adhesion on the surface 10 of the tube 6; here the tightness fitting naturally also remains integral with the rotation of the tube in slides in rotation with respect to the crown.
  • the foot of the T-profile of the tightness fitting 34 of FIG. 2 inserts itself between the two bodies 36 and 38 at least to the level where the holding pressure is exercised between the projections and 22.
  • the tightness fitting 42 unites several advantages of the previously considered constructions.
  • the construction of the basis is similar to that of the construction according to FIG. 2, but instead of the two similar bodies of the fitting, one has one body of the fitting 44 with a round or oval profile and one body of the fitting 46 with a rectangular profile which is preferably not very thick.
  • the ring 40 of the tightness fitting 42 is similar to the ring 40 of the tightness fitting 34, it is simply positioned in a slightly different manner.
  • the body of the fitting 44, of round or oval section changes shape in a manner approximately similar to the body of the fitting 28 of the construction according to FIG.
  • FIG. 4 shows the part of the device forming the winder crown without the presence of the tightness fitting.
  • FIG. 4 shows the elements already described in connection with FIG. 1, and one sees in addition that the possibility has been considered to provide a supplementary seam 46 for the mounting of the encased disk.
  • the tightness with regard to the possible passage of dust to the outside of the'tightness fitting. If one considers the path of the passage having its entrance at the interior of the encased disk, one sees that two elastic pressure joints meet in order to reach through the exterior of the tightness fitting to the interior of the crown (and from there to the interior of the watch casing).
  • FIG. 4 shows that the interior border of the projection 22, of the encased disk 16, can correspond with the central opening of this disk (drawing in solid lines) or be found in the withdrawal of this central opening (marked in mixed lines V).
  • FIG. 5 shows a variant of the configuration of the part of the device forming the crown.
  • the crown 52 which contains a body of the crown 54 and a spout 56, shows instead of the projections 20 and 22 bordered by a straight disengagement, the projections 58 and 60 formed on one side by conical surfaces.
  • the holding surface sections 62 and 64 which in such a case show these projections are, in practice, rounded-off and, according to the material forming the bodies or body of the fitting, this configuration with rounded-off projections can have very good results.
  • the bed 66 in which the tightness fitting is located has a slightly different shape but this is not of any consequence.
  • FIG. 6 shows that mainly in the case of the construction according to the left part of FIG. 1, but in a manner which would not be troublesome in the construction according to the right part of FIG. 1, the ring 30 contains a circular groove 70 in which the preliminary setting up of the body of the tightness fitting 28 can take place in a particularly easy manner.
  • This body of the fitting 28, if it is engaged in the groove 70 does not run the risk of disengaging itself from the ring 30 in the course of the handling.
  • the presence of the groove 70 also prevents a possible lateral sliding of the ring 30 which could possibly create an undesirable friction against the bottom of the hollowing 18 or the encased disk 16.
  • FIG. 7 shows a particularly advantageous method of forming the ring 40 of the tightness fitting 42 according to FIG. 3.
  • this same construction is also suitable for the ring of the other constructions which use a ring of a similar profile, i.e., for the ring 40 of the fitting 34 of the construction according to FIG. 2.
  • FIG. 7 shows that one can advantageously cut in the foot of the T-profile of the ring 40 triangular strips 72 which are set up at right angles with this foot, in order to keep in place through penetration an elastic body of the fitting, of rectangular profile, such as the body 46 or one of the bodies 36 and 38.
  • the part of the ring 40 which forms the foot of the T-profile shows on the opposite side to it where the triangular strips 72 are set up a hollowing or ringshaped groove 74 which assists the placing of the round or oval body of the fitting 46 against the foot of the T- profile and under the wing of this profile.
  • the construction shown in FIG. .7 for the ring 40, 4 with a T-profile facilitates the preliminary assembly and the keeping assembled of the body of the fitting and the ring which form the tightness fitting, typically the fitting 42 of the construction according to FIG. 3 but also the tightness fitting 34 of the construction according to FIG. 2.
  • the ring-shaped surface section 26 of the projection would be able to be slightly obliquely cut in order to establish a thinning down of the side bordering the central opening of the encased disk and to thus make the body of the fitting come almost as far as into this opening in order to be able to shorten the tube 6, while still insuring the tightness when the crown is pulled to the maximum toward the exterior.
  • said ring-shaped surface sections of one of the parts which grip the tightness fitting are at least approximately axially formed opposite both sides of the fitting on which they exercise an axial gripping pressure substantially free from any radial component, said ring-shaped surface sections being defined on ring-shaped projections which stand out axially toward the fitting in order to only set up the axial gripping between two opposite ring-shaped gripzones which are narrow with regard to said height of the profile of the fitting and beside which there remain no-grip-zones, said gripping tending to cause a radial extension of said height,
  • the tightness fitting is provided with a radial retention ring arranged around at least one elastically deformable fitting-body in order to restrain said radial expansion outwardly so as to make it act inwardly against the mentioned cylindrical surface around which said fitting is engaged, said retention ring being in direct contact with neither of said two parts,
  • the tightness fitting contains a fitting-body made of an elastic material and having a profile at least approximately of a straight quadrilateral shape, said fitting-body being surrounded by said ring, which is made of metal or a plastic material harder than said fitting-body and which shows an axially elongated profile corresponding to the thickness, axially-measured of the fitting-body.
  • said tightness fitting contains a fitting-body made of an elastic material, formed by an O-ring and surrounded by said ring, which is made of a metal or a plastic material which is harder than the body of the fitting and has an axially elongated profile.
  • said part which is fixed to the casing is a tube, the exterior surface ofwhich forms said cylindrical surface enclosed by the tightness fitting, said part which is movable and attached to the stem being a winder crown in which said bed is formed by a hollowing provided in the body of the crown and laterally reclosed by an inset washer while the tightness fitting is located therein, said ringshaped surface sections being presented by both the bottom of said hollowing in the body of the crown and said inset washer.
  • the tightness fitting contains two fitting-bodies made of an elastic material, said ring, made of metal or a plastic material harder than said fitting bodies, having a T-profile, the foot of which returns radially toward the interior at least up to the level of said ring-shaped gripping zones, and said two fitting-bodies being located on both sides of the foot of the T, each respectively under a wing of the T-profile.
  • one of said two fitting-bodies has a circular profile whereas the other one has a rectangular profile, the height of each of these two profiles being greater than their thickness.
  • a winding crown which is integrally movable with the mentioned stem and in which a bed is formed by a hollowing arranged coaxially in the body of the crown and laterally closed by an inset washer and a ring-shaped tightness fitting suited for undergoing an elastic deformation and engaged, on the one hand, around the mentioned cylindrical surface of said tube and, on the other hand, in said bed of said crown, said tightness fitting having a profile the height of which in radial direction of its ring shape is at least approximately equal to its width in axial direction of its ring shape and being gripped between ring-shaped surface sections located in said bed, both by the bottom of said hollowing in the body of the crown and by said inset washer, and wherein said ring-shaped surfaces which grip the tightness fitting, are at least approximately axially opposite, on both sides of the fitting on which they exercise an axial gripping pressure substantially free from any radial component, said ring shaped surface sections being defined by ring-shaped projections which stand out axially toward the fitting in order to only set
  • the tightness fitting contains a radial retention ring arranged around at least one is provided with elastically deformable fitting-body inorder to restrain said radial expansion outwardly so as to make it act inwardly against said cylindrical surface of the tube, while said ring is in direct contact neither with the tube nor with said crown, nor with said inset washer.
  • said tightness fitting contains a fitting-body which is made of an elastic material, formed by an O-ring, and surrounded by said retention ring, which is made of a metal or a plastic material harder than said fitting-body and has an axially elongated profile.
  • the tightness fitting contains two fitting-bodies made of an elastic material and having a profile which has at least approximately a straight quadrilateral shape, the height of which is at least equal to the thickness, said retention ring made of metal or a plastic material harder than the fitting-bodies, having a'T-profile the foot of which returns radially toward the interior at least up to the level of said ring-shaped grip zones, and the said two fittingbodies being located on both sides of the foot of the T, each respectively under a wing of the T-profile.
  • said tightness fitting contains two fitting-bodies made of an elastic material, one of them having a circular profile and the other one having a rectangular profile, the height of each of said two profiles being larger than their thickness, said retention ring, made of metal or of a plastic material is harder than said fitting-bodies, having a T-profile the foot of which returns radially toward the interior at least up to the level of said ring-shaped grip-zones, and said two fitting-bodies being located on both sides of the foot of the T, each respectively under a wing of the T-profile.
  • the tightness fitting has a body made of an elastic material, with a profile at least approximately of a straight quadrilateral shape, said body being surrounded by said retention ring which is made of metal or a plastic material harder than said body and has a profile which is axially elongated corresponding to the thickness, measured axially, of said body.

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  • General Physics & Mathematics (AREA)
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US482568A 1973-06-29 1974-06-24 Device for insuring the tightness of a timepiece casing Expired - Lifetime US3863438A (en)

Applications Claiming Priority (1)

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CH956873A CH569318B5 (de) 1973-06-29 1973-06-29

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US3863438A true US3863438A (en) 1975-02-04

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US482568A Expired - Lifetime US3863438A (en) 1973-06-29 1974-06-24 Device for insuring the tightness of a timepiece casing

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US (1) US3863438A (de)
CH (2) CH569318B5 (de)
DE (1) DE2429726A1 (de)
FR (1) FR2235414B1 (de)
GB (1) GB1461434A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050162985A1 (en) * 2004-01-23 2005-07-28 Richemont International S.A. Automatic setting device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH630771B (fr) * 1979-07-04 Boninchi Sa Organe de commande pour montre etanche.
CN112596365B (zh) * 2020-12-16 2022-07-22 歌尔光学科技有限公司 一种转盘式表冠及智能手表

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376701A (en) * 1966-07-01 1968-04-09 United States Time Corp.:The Watch crown
US3475901A (en) * 1967-05-09 1969-11-04 Rene Soguel Winding and hand-setting crown for diver watches
US3485036A (en) * 1967-07-07 1969-12-23 Walther A Feurer High pressure watertight watch crown
US3499281A (en) * 1968-02-29 1970-03-10 Us Time Corp The Watch crown

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1148459A (fr) * 1955-10-25 1957-12-10 Perfectionnement aux couronnes de remontoir étanches pour montres
FR1364504A (fr) * 1963-07-26 1964-06-19 Perfectionnements aux montres étanches

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376701A (en) * 1966-07-01 1968-04-09 United States Time Corp.:The Watch crown
US3475901A (en) * 1967-05-09 1969-11-04 Rene Soguel Winding and hand-setting crown for diver watches
US3485036A (en) * 1967-07-07 1969-12-23 Walther A Feurer High pressure watertight watch crown
US3499281A (en) * 1968-02-29 1970-03-10 Us Time Corp The Watch crown

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050162985A1 (en) * 2004-01-23 2005-07-28 Richemont International S.A. Automatic setting device
US7540655B2 (en) * 2004-01-23 2009-06-02 Richemont International S.A. Automatic setting device

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Publication number Publication date
FR2235414B1 (de) 1977-03-11
DE2429726A1 (de) 1975-01-16
FR2235414A1 (de) 1975-01-24
CH569318B5 (de) 1975-11-14
GB1461434A (en) 1977-01-13
CH956873A4 (de) 1975-05-15

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