CH333257A

CH333257A - Waterproof box for watch

Info

Publication number: CH333257A
Authority: CH
Inventors: Sanglard Maurice
Original assignee: Sanglard Maurice
Priority date: 1957-10-08
Filing date: 1957-10-08
Publication date: 1958-10-15

Description

Boite etanche pour montre La pr6sente invention a pour objet une boite etanche pour montre, ä fond viss6. Waterproof box for watch The present invention relates to a waterproof box for watch, with a screwed bottom.

Cette boite est caract6ris6e par 1e fait que 1'un au moins de ses deux 616ments - fond et corps de boite - porte une garniture en matiere plastique presentant un pas de vis avec Iequel coopere 1'autre 616ment, les filetages 6tant tels que la matiere plastique soit 16gerement comprimee par les filets dudit autre 616ment dans 1e but d'assurer 1'6tanch6it6. This box is characterized by the fact that at least one of its two 616ments - bottom and body of the box - carries a plastic trim having a screw thread with which the other 616ment cooperates, the threads being such that the material plastic is slightly compressed by the threads of the said other 616ment in order to ensure the seal.

Le dessin annex6 repr6sente, ä titre d'exemple, deux formes d'execution de 1'objet de 1'invention. The appended drawing shows, by way of example, two embodiments of the object of the invention.

Les fig. 1 et 2 sont deux coupes axiales partielles de deux boites 6tanches pour montres. La boite 6tanche de la premiere forme d'ex6cution comprend une carrure-lunette 1 dans laquelle est mont6e ä cran, de fa@on etanche, une glace 2 et qui prdsente une portee tronconique 3 sur laquelle est montee une gar- niture 4, en matiere plastique. Cette garniture pr6sente un taraudage 5 dans lequel se visse un rebord 6a du fond 6. Figs. 1 and 2 are two partial axial sections of two waterproof watch cases. The waterproof case of the first form of execution comprises a caseband-bezel 1 in which is snap-fitted, in a watertight fashion, a crystal 2 and which has a frustoconical surface 3 on which is mounted a fitting 4, in plastic material. This fitting has an internal thread 5 into which a rim 6a of the bottom 6 is screwed.

Les deux filetages sont tels que 1e fond force 16gerement lorsqu'il est visse dans la ganiture 4. Celle-ci est ainsi 16gerement com- primee par 1e filetage du rebord du fond, ce qui assure 1'dtancheit6. Ce r6sultat peut eire atteint en donnant aux filets du fond et de la garniture un profil tres ldgerement diff6rent 1'un de 1'autre. The two threads are such that the bottom forces slightly when it is screwed into the fitting 4. The latter is thus slightly compressed by the thread of the bottom edge, which ensures the seal. This result can be achieved by giving the threads of the base and the filling a very slightly different profile from each other.

En variante, et pour parfaire 1'dtanchditd, la. garniture 4 pourrait se prolonger par un rebord 4a repr6sent6 en traits mixtes dans la fig. 1, situ6 dans un plan parallele ä celui de la boite et contre lequel prendrait appui la partie pdriphdrique 6b du fond 6. Ce rebord 4a sera logo dans une creusure annulaire pra- tiquee soit dans 1e corps de boite, soit dans la partie 6b du fond. Alternatively, and to complete 1'dtanchditd, the. trim 4 could be extended by a rim 4a represented in phantom in FIG. 1, situated in a plane parallel to that of the box and against which the peripheral part 6b of the bottom 6 would rest. bottom.

Dans la forme d'exdcution de la fig. 2, le rebord 7a du fond 7 prdsente une port6e ext6- rieure tronconique 8 autour de laquelle est montde une garniture 9, en matiere plastique, filetee en 10. Cette garniture se visse dans 1e taraudage du corps de boite d6sign6 par 11. L'etanch6it6 est assurde de la meine maniere que dans la premiere forme d'ex6cution. In the embodiment of FIG. 2, the rim 7a of the bottom 7 has a frustoconical outer surface 8 around which is mounted a trim 9, made of plastic material, threaded at 10. This trim is screwed into the first thread of the box body designated by 11. sealing is ensured in the same way as in the first form of execution.

La garniture en matiere plastique Sera fix6e ä 1'e16ment qui la porte par moulage, frittage ou de toute maniere addquate. The plastic lining will be fixed to the element which carries it by molding, sintering or any suitable manner.

En variante, an pourra prdvoir 1e cas oü 1e corps de boite et 1e fond porteront tous deux une garniture en matiere plastique pr6sentant 1e filetage. Alternatively, a year may provide for the first case where the first box body and the first bottom will both carry a plastic material lining presenting the first thread.

Claims

CLAIM Watertight case for watch, with screwed back, characterized by the fact that at least one of its two elements - case back and body -

carries a plastic material gasket having a thread with which the other element cooperates, the threads being such that the plastic material is slightly compressed by the threads of the said other element in order to ensure sealing . SUB-CLAIMS 1. Waterproof box according to claim, characterized by the fact that said gasket is mounted on a frustoconical surface of the element - bottom and box body - which carries it. z. Aanche box according to claim and sub-claim 1, characterized in that said plastic material lining surrounds an edge of the bottom and has a thread cooperating with a corresponding internal thread of the box body.

3. Aanche box according to claim and sub-claim 1, characterized by the fact that said plastic material gasket is housed inside a frustoconical surface of the box body and has an internal thread with which a thread cooperates. from the bottom edge.

4. Watertight box according to claim, characterized by the fact that the plastic material lining has a rim extending in a plane parallel to that of the box, this rim being clamped between the first box body and the first bottom in order to perfect 1 tightness of the assembly.