The invention concerns a device for mounting a pressure sensor simply and precisely on the back cover (11) of a diver's watch or altimeter watch. The pressure sensor (31) is driven into an intermediate ring (33) forming part of a sensor module ( 30) which further includes an additional PCB (34), a s
The invention concerns a device for mounting a pressure sensor simply and precisely on the back cover (11) of a diver's watch or altimeter watch. The pressure sensor (31) is driven into an intermediate ring (33) forming part of a sensor module ( 30) which further includes an additional PCB (34), a sensor support (35) and connecting elements (38) between the additional PCB (34) and a main PCB of the watch. To ensure very precise positioning relative to the back cover, the intermediate ring ( 33) includes feet (35) that engage in holes in the additional PCB and in the sensor support. A sealing gasket (32) is radially compressed between the wall of the orifice (12) of the back cover and a tubular casing (47) of the pressure sensor. The back cover (11) is covered externally by a perforated cover.
대표청구항▼
What is claimed is: 1. A watch including a case provided with a back cover resistant to ambient pressure, a pressure sensor mounted in an orifice of the back cover with an intermediate ring, and a printed circuit element connected to the terminals of the pressure sensor, said sensor including a rig
What is claimed is: 1. A watch including a case provided with a back cover resistant to ambient pressure, a pressure sensor mounted in an orifice of the back cover with an intermediate ring, and a printed circuit element connected to the terminals of the pressure sensor, said sensor including a rigid substrate provided with said terminals, a tubular casing secured to the substrate in a water-resistant manner and arranged to fit into the intermediate ring, and a pressure-sensitive element, which is mounted on the substrate and located inside the tubular casing, said watch including a sensor module including at least the intermediate ring, the pressure sensor, the printed circuit element and a sensor support placed against the printed circuit element on the opposite side to said sensor and arranged to withstand the force resulting from the ambient pressure on the sensor, said force being transmitted from said support to the back cover by members for securing the sensor module, wherein the sensor module is mounted in a water-resistant manner and centred in the orifice of the back cover and wherein the intermediate ring includes feet arranged to engage in positioning holes of the printed circuit element without any play. 2. The watch according to claim 1, wherein said feet are further engaged in holes in the sensor support. 3. The watch according to claim 1, wherein said feet are cylindrical. 4. The watch according to claim 1, wherein the tubular casing of the sensor is prominent in relation to a frontal face of the intermediate ring, towards the exterior side of the back cover, and wherein said sensor module is mounted in the back cover in a water-resistant manner by an annular sealing gasket, which is compressed radially between said tubular casing and a wall of the orifice of the back cover, said annular sealing gasket being capable of abutting axially against said frontal face. 5. The watch according to claim 4, wherein the sensor module is centred in said orifice by the annular sealing gasket. 6. The watch according to claim 4, wherein the sensor module is centred in said orifice by driving the intermediate ring into the orifice. 7. The watch according to claim 1, wherein the watchcase includes a middle part, to which the back cover is connected in a water-resistant manner, and a cover covering the back cover externally so as to arrange a chamber between the back cover and the cover in which ambient pressure is transmitted through at least one aperture in the cover. 8. The watch according to claim 7, wherein the cover is secured to the middle part and forces the back cover to abut in a water-resistant manner against the middle part. 9. The watch according to claim 7, wherein the back cover is secured to the middle part in a water-resistant manner and wherein the cover is secured to the back cover. 10. The watch according to claim 7, wherein the back cover includes a first region, in which said orifice and a groove are located on the side of said chamber and which connects said orifice to said aperture in the cover, and a second region having a more flexible part than the first region, said part and said groove being separated by a rigid rib. 11. The watch according to claim 10, wherein a piezoelectric element is secured to said more flexible part to form an acoustic transducer.
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이 특허에 인용된 특허 (6)
Mignot Jean-Pierre,CHX ; Dinnissen Paul,CHX, Device capable of being submerged and including an acoustic transducer.
Fukuda,Hirosi; Hashida,Takashi; Fujii,Yuko; Nomura,Takaiki; Itou,Shuji; Sasaki,Takahiro, Piezoelectric element comprising a covering layer that suppresses the absorption of water and method of manufacturing the same.
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