DE3144664A1 - DENSITY EXTRA FLAT WATCH CASE - Google Patents

Description

- 3 description

The invention relates to a tight, extra flat watch case, in particular a sealing system between the bottom and the case ring of an extra flat watch with a thickness of less than 4 mm.

The subject of the invention is a device according to claim 1.

In the following two exemplary embodiments of the invention are described with reference to the drawing. Show it:

1 shows a first radial partial section running through the elevator rod of a first embodiment the clock;

Fig. 2 is a partial radial section of a second embodiment.

According to Fig. 1, a watch case contains a circular or arbitrarily shaped bottom 1, which is in one in the bottom a housing ring 2 formed seat is inserted. The base 1 rests on a shoulder 3 of the housing ring 2.

The base is fastened in the operating position by means of screws, not shown, which are perpendicular to the surface of the shoulder 3 are screwed into the thread of the housing ring 2. The casing ring 2, the thickness of which is approximately equal to the total thickness of the watch, is approximately less than 4 mm, has an upper seat forming a shoulder 5 for receiving a glass 6.

The seal between the glass and the housing ring 2 takes place in any desired manner, in particular by gluing.

The housing ring 2 has a second seat, the second

3H4664

forms lower shoulder 7, the dimensions of which are smaller than at the seat receiving the floor 1.

A movement frame ring 8 is used to attach the clockwork. Like the dial 9, the movement frame ring is inserted into a third seat of the housing ring 2, the dimensions of which are even smaller than those of shoulder 7.

The work frame ring 8 has an annular lower recess.

A seal made of flexible material is ring-shaped, circular or polygonal, depending on the shape of the watch case. These The seal has three legs 1 to 12 in cross section. The first leg is between the base 1 and the work frame ring 8 compressed, which rests against a shoulder 13 of the housing ring 2 via the dial 9. The floor will by the specified screws, not shown. kept its place.

The second leg 11 of the elastic seal is between the work frame ring 8 and the housing ring 2 pressed together, while the third leg 12 of the seal between the Bottom 1 and the housing ring 2 is pressed together.

The main advantage of such a seal is that it provides simultaneous sealing between the floor, the housing ring and the work frame ring guaranteed and above all completely in recesses of the housing ring and of the movement frame ring is used in such a way that it in no way increases the thickness of the watch case and of the Outside of the watch case is neither accessible nor visible.

The dimensions of the seal 10-12 are chosen so that this in its entirety in the operating position shown between the floor 1 on the one hand and the work frame

ring 8 and the <5ehäusring 2 on the other hand pressed together moreover, the poetry becomes in their between the Movement frame ring 8 and the housing ring 2 located part radially to the watch case compressed.

A perfect seal is thus achieved up to one Pressure of several atmospheres, e.g. B. 3 to 4 at, with a single easy to manufacture and manufacture Gasket that, above all, does not increase the thickness of the extra-flat watch case.

This construction is very easy to carry out because the machining operations are simple and assembly is instant is possible, so that the quality of the tight assembly can be easily guaranteed.

In the second embodiment of FIG. 2, the seal only two legs 10, 11 and thus the general cross-section shape of an elbow.

The work frame ring 8 is Z-shaped here in cross section. The seal 10, 11 is compressed in the operating position: axially in its entirety between the base 1 and the work frame ring 8 and radially between the work frame ring 8 and the housing ring 2.

The advantages here are the same as those of the first embodiment to find.

The sealing system described can be used in the same way can be used with a circular or any shaped watch case, which is an additional advantage.

Claims (5)

α β BEETZ-LAMPRECHT-BEETZ "- ·" - 8QQQ Munich 22 ■ Stejnsdorfstr. K) 56-33.oo8P (33.oo9H) lo. Nov 1981 BOUGHET-LASSALE S.A. 1211 Geneva 4, Switzerland Dense extra flat watch case Expectations Dense, extra flat watch case, characterized by - That the housing ring (2), the thickness of which is practically the same as that of the housing, has a lower shoulder (3) for receiving a base (1), and - That a ring seal has at least two legs in cross section, the first leg (10) between the bottom (1) and a work frame ring supporting the work (8) and the second leg (11) between the housing ring (2) and the work frame ring (8) are clamped. 2. watch case according to claim 1, characterized, - That the ring seal (10-12) has a third leg (12) which is compressed between the base (1) and the housing ring (2). 56-7342 3. watch case according to claim 1 _Λ characterized in that - That the ring seal (10, 11) is L-shaped in cross section is. 4. watch case according to claim 2, characterized in that - That the ring seal (10-12) is T-shaped in cross section is. 5. Watch case according to one of the preceding claims, characterized in that - That the ring seal (10, 11; 10-12) is compressed in the operating position: axially in its entirety and radially on the part (11) located between the work frame ring (8) and the housing ring (2).