DE2424843A1 - SHOCK ABSORBING RING FOR A MOVEMENT - Google Patents

Description

SBBM BÜRDET S.A. DAMPRICHARD / France

Shock-absorbing ring for a clockwork

The invention relates to the formation of a shock-absorbing ring for a movement within a watch case.

Devices to protect clockworks against vibrations are in different versions known. A protective ring with at least one spring element is known, with the ring resting on the clockwork is determined while the spring element is supported on the watch case with the aim of external impacts on the clockwork to dampen. However, this device requires a lot of space and is only slightly flexible because of the insufficient length of the spring elements.

We also know a watch with a protective device against shocks, whose Clockwork is enclosed in a case, which in turn

1120. B337. 12D. 13 - BIl / KW / dw

509822/0546

is arranged in another large housing. Between these springs are arranged in both housings to dampen any shocks, that act on the watch. This device has the same disadvantages as the one previously described.

One also knows an elastic band next to the peripheral part of the movement, which is attached to a fitting ring. This strip is in the axial direction of the clockwork through a part · on the case tensioned when it closes, thereby keeping the movement in place in the case. This design has the disadvantages of the two previously described not, but the assembly is complicated and laborious, since this design consists of several, independent Elements that have to be attached to each other by hand.

Another well-known fitting ring consists of a number of inner and outer elements, which are arranged alternately and elastically connected to one another. The outer elements have at least each an outer surface, a part of which is adjustable in order to adapt to the Place the inner surface of the housing and thereby secure the position of the fitting ring within the housing. The inner elements have at least an inner surface with an adjustable part, with which they rest against an outer surface of the housing in order to fix and position it secure inside the housing. This version has certain Advantages over the devices described above, but the damping effect is only effective in the case of side impacts on the watch.

The purpose of the invention is therefore to create a shock-absorbing ring, its shock-absorbing effect works independently in all directions from the thrust to the clock.

Such a ring is characterized according to the invention by features, as listed in the characterizing part of the claim.

509822/0546

Examples of embodiments are shown in the accompanying drawings of such a ring according to the invention, showing:

Figure 1 is a plan view from the glass side of the

shock absorbing ring,

/ in Figure 2 a section according to II - II Fig. 1,

FIG. 3 a modification of FIG. 2,

Figure 4 shows the formation of corrugations and

Figures 5 and 6 modifications thereof.

The shock-absorbing ring according to FIG. 1 can be manufactured in one piece be, however, in reality consists of an inner ring 1 and an outer ring 2, which are arranged concentrically to one another. These two rings are interconnected by means of circumferential cuts 3, 4, 5, 6, 7. The section 5 is provided with a pin 5a, which facilitates the alignment of the ring in the housing. Between Sections 3 and 7 have a passage 8 for the winding shaft of the clockwork. This passage is with an arc of a circle Reinforcement 8a provided. Between the sections 3, 4, 5, 6, corrugations 9, 10, 11, 12 are attached, which on the housing base rest.

Fig. 2 shows a section through the two rings 1 and 2 in height of one Connecting section 3, 4, 5, 6, 7. Thereafter, the inner ring 1 has a Ring shoulder 1 a and a peripheral flange 1 b. The connecting sections 3, 4, 5, 6, 7 have an inclined surface 13 on the bezel side and an angled groove 14 on the bottom side.

Fig. 3 shows a modification of the annular shoulder 1 a with an annular groove 1 c, whereby the movement is better held in the shock-absorbing ring.

509822/054

fig. Figure 4 shows the details of the corrugations 9,10,11,12 that each consist of There are arcuately curved sections 15, each with two curved or straight continuations 16 and 17 at each of their ends and at the connecting sections 3, 4, 5, 6, 7. The connecting points 15a, 15b of the continuations 16, 17 on the corrugation 15 can be slotted to a greater or lesser extent, thereby increasing the degree of flexibility of waves 9 $ 10, 11, 12 to be able to change those at points 18 and 19 rest on the bottom of the housing.

A modified embodiment according to FIG. 6 shows how the corrugations can also be designed the other way around, in which case they then rest with the contact points 18 and 19 on the bezel of the watch, while the circumferential flange. Ib (Fig. 2) rests on the bottom of the housing.

509822 / 05Λ6

Claims (1)

PATENT CLAIM H Shock-absorbing ring for a movement inside a watch case, characterized by two concentric rings (1,2), of which the inner ring (1) is reinforced, at the height of the winding shaft has interrupted ring shoulder (la), under which a thin, flexible, the clockwork clamping circumference sf lanÄcdi (Ib) is arranged, and of which the sere ring (2) is provided with corrugations (15 to 19), the amplitude of which does not exceed the ring thickness, the outer ring on the inner ring is only fastened at a necessary and sufficient number of points around it on the case back to give supporting corrugations the desired flexibility. 5098 2 2/0546