GB2119975A - Water-resistant fixing device of a mirror on an element of a watch case - Google Patents

Water-resistant fixing device of a mirror on an element of a watch case Download PDF

Info

Publication number
GB2119975A
GB2119975A GB08312453A GB8312453A GB2119975A GB 2119975 A GB2119975 A GB 2119975A GB 08312453 A GB08312453 A GB 08312453A GB 8312453 A GB8312453 A GB 8312453A GB 2119975 A GB2119975 A GB 2119975A
Authority
GB
United Kingdom
Prior art keywords
mirror
watch case
fact
water
gasket
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
Application number
GB08312453A
Other versions
GB8312453D0 (en
GB2119975B (en
Inventor
Pierre Goy
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.)
LASSALE JEAN SA
JEAN LASSALE SA
Original Assignee
LASSALE JEAN SA
JEAN LASSALE 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 LASSALE JEAN SA, JEAN LASSALE SA filed Critical LASSALE JEAN SA
Publication of GB8312453D0 publication Critical patent/GB8312453D0/en
Publication of GB2119975A publication Critical patent/GB2119975A/en
Application granted granted Critical
Publication of GB2119975B publication Critical patent/GB2119975B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Electric Clocks (AREA)

Abstract

The invention relates to water- resistant fixing device of a glass on an element of a watch case. The lower face of the glass 1 is provided with a peripheral bevel defining, with the frontal and lateral walls of a shoulder step 3 carried by the element 2 of the watch case, a recess having an "O Ring" seal 5. <IMAGE>

Description

SPECIFICATION Water-resistant fixing device of a mirror on an element of a watch case The present invention relates to a water-resistant fixing device of a mirror on an element, bezel or middle-bezel for example, of a watch case.
Generally, the middle of a watch case is provided with a shoulder step, defining a housing for the mirror, on which the said mirror rests. The water-resistant fixation of the mirror on said middle is obtained by placing a compressible gasket between the periphery of the mirror and the middle of the watch case.
The compressible gasket has generally the shape of a I or of a L, it can sometimes be partially housed in a groove provided in the middle to ascertain its axial positioning.
In these realizations, the upper face of the gasket is visible and this hurts the esthetical outlook of the watch. Furthermore, at the contact of air and dust, the gasket can be damaged. Finally, the aging of the gasket causes its cracking causing defects of the water-resistance.
There are also watch cases in which the mirror is glued in a housing of the middle part of the watch. In these latter realizations, the replacement of the mirror, when it is scratched for example, is difficult and the water-resistance is not guaranteed.
The present invention has for its object a water-resistant fixation of the mirror on an element of a watch case tending to overcome the drawbacks of the precited realizations.
This device presents the characteristics mentioned in claim 1.
The attached drawing shows schematically and by way of example two emnodiments of the water-resistant fixing device according to the invention.
Figure 1 shows a partial cross-section of a watch case using the water-resistant fixing device for the mirror according to the invention.
Figure 2 is a partial cross-section at greater scale of a watch case showing one embodiment of the water-resistant fixing device of the mirror.
Figure 3 is a partial cross-section at greater scale of a watch case showing another em bodiment of the water resistant fixing device of the mirror.
In the embodiment shown at Fig. 3, the water-resistant fixing device of the mirror 1 on a middle 2 of the watch case comprises a shoulder step 3 provided in the middle 2 which can be separated from the upper face of this middle by a distance of 0,75 mm for example. This shoulder step is located on the whole periphery of the middle and determines a housing intended to receive the mirror 1.
The mirror 1 has a diameter or an outside dimension for the shaped watch cases, corresponding to the dimensions of the housing of the middle so that this mirror is fastened in the housing of the middle. Preferably, the mirror 1 is driven in the said housing of the middle 2, but it could also be glued in said housing.
The lower face of the mirror comprises a bevel 4 defining, in service position, an annular cavity with the angle of the housing provided in the middle 2. A "O Ring" gasket 5 having a circular shape or another shape, corresponding to the one of the middle 2 is, in service position, compressed in said cavity which it fills practically entirely and guarantees a perfect water-resistance between the middle 2 and the mirror 1. This gasket 5 is entirely protected and does not extend between the mirror and the middle which are in tight mechanical contact on a portion of the thickness of the mirror 1.
For the gasket 5 to be not visible through the mirror 1, this gasket can be translucent or transparent. In another realization the beveled face 4 of the mirror can be metallized or opaque-ground making thus a mask for the gasket 5.
In its non deformed state the gasket can have a section having a diameter of 0,3 mm for example.
The main advantages of this realization are: 1. The mirror 1 is in mechanical contact with the middle 2 providing for a perfect fixing of said mirror.
2. The gasket 5 is entirely protected, avoiding any accidental damaging of said gasket and reducing its aging.
3. The gasket 5 is not visible.
4. This realization can be applied to the circular or shaped watches and is particularly well adapted for extra-thin watches, since it takes no place in height, permitting in certain cases to reduce the height of the watch case.
In the embodiment of the device shown in Figs. 1 and 2 the middle 2 comprises also an inclined face 6. This enables, for a same dimension of the gasket 5, and thus of the cavity receiving it, to reduce the length of the beveled face 4 of the mirror and thus of the height of said cavity, enabling also to reduce the height of the mirror and of the shoulder step of the middle.
Here also, the mirror 1 is driven in or glued in the housing of the middle 2 and the gasket is made to be invisible either because it is translucide or by metallization or opaquegrinding of the beveled face of the mirror 1.
On top of the precited advantages, this second realization enables a further reduction of the height of the mirror and of the watch case.
Preferably the beveled face 4 of the mirror 1 forms an angle of 45 with the lower face of said mirror 1.

Claims (6)

1. Water-resistant fixing device of a mirror on a watch case element, characterized by the fact that the mirror comprises a cylindrical peripheral surface cooperating with an opening of corresponding shape of the watch case element for fixing said mirror on said element; by the fact that the lower surface of the mirror rests on a shoulder provided on the watch case element; and by the fact that this mirror comprises a peripheral bevel defining, in service position, with the frontal and lateral walls of the shoulder of the watch case element, a cavity housing a "O Ring" gasket.
2. Device according to claim 1, characterized by the fact that the mirror is driven in the element of the watch case.
3. Device according to claim 1, characterized by the fact that the mirror is glued in the element of the watch case.
4. Device according to claim 1, characterized by the fact that the beveled face of the mirror is metallized.
5. Device according to claim 1, characterized by the fact that the beveled face of the mirror is opaque-ground.
6. Device according to claim 1, characterized by the fact that the gasket is translucent or transparent.
GB08312453A 1982-05-11 1983-05-06 Water-resistant fixing device of a mirror on an element of a watch case Expired GB2119975B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH292482A CH652562GA3 (en) 1982-05-11 1982-05-11

Publications (3)

Publication Number Publication Date
GB8312453D0 GB8312453D0 (en) 1983-06-08
GB2119975A true GB2119975A (en) 1983-11-23
GB2119975B GB2119975B (en) 1985-11-06

Family

ID=4244681

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08312453A Expired GB2119975B (en) 1982-05-11 1983-05-06 Water-resistant fixing device of a mirror on an element of a watch case

Country Status (7)

Country Link
JP (1) JPS58196478A (en)
CA (1) CA1195851A (en)
CH (1) CH652562GA3 (en)
DE (2) DE3316327A1 (en)
FR (1) FR2526970B1 (en)
GB (1) GB2119975B (en)
IT (1) IT1237344B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4198646A1 (en) * 2021-12-16 2023-06-21 Omega SA Watertight watch case with fastening seal

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3736644A1 (en) * 2019-05-08 2020-11-11 Omega SA Watertight watch case
EP3736643A1 (en) * 2019-05-08 2020-11-11 Omega SA Watertight watch case
EP4194969A1 (en) * 2021-12-07 2023-06-14 The Swatch Group Research and Development Ltd Sealed closing device for a watch case

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1153764A (en) * 1966-06-01 1969-05-29 Piquerez Sa Ervin Watertight Watch Case
GB2041587A (en) * 1979-01-27 1980-09-10 Citizen Watch Co Ltd Mounting watch-glasses
GB1597683A (en) * 1977-04-06 1981-09-09 Citizen Watch Co Ltd Watch case
GB2094034A (en) * 1981-02-20 1982-09-08 Citizen Watch Co Ltd Structure of watch case

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH136A (en) * 1889-01-24 Hugo Steinke Springless security lock
CH5670A (en) * 1892-09-01 1893-02-15 Warwick Benjamin William Self-rectifying flexible shaft or conductor for motion transmission
CH219201A (en) * 1940-03-27 1942-01-31 Morf Ernest Shaped waterproof watch box.
CH281803A (en) * 1948-12-23 1952-03-31 Rolex Montres Process for decorating a watch crystal and watch crystal obtained by this process.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1153764A (en) * 1966-06-01 1969-05-29 Piquerez Sa Ervin Watertight Watch Case
GB1597683A (en) * 1977-04-06 1981-09-09 Citizen Watch Co Ltd Watch case
GB2041587A (en) * 1979-01-27 1980-09-10 Citizen Watch Co Ltd Mounting watch-glasses
GB2094034A (en) * 1981-02-20 1982-09-08 Citizen Watch Co Ltd Structure of watch case

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4198646A1 (en) * 2021-12-16 2023-06-21 Omega SA Watertight watch case with fastening seal

Also Published As

Publication number Publication date
FR2526970B1 (en) 1987-04-24
CA1195851A (en) 1985-10-29
FR2526970A1 (en) 1983-11-18
CH652562GA3 (en) 1985-11-29
GB8312453D0 (en) 1983-06-08
DE8313220U1 (en) 1984-10-25
DE3316327A1 (en) 1983-11-17
JPS58196478A (en) 1983-11-15
IT1237344B (en) 1993-05-31
GB2119975B (en) 1985-11-06
IT8320710A0 (en) 1983-04-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee