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Portable electronic appliance including a pressure sensor

A pressure sensor and electronic instrument technology, applied in the field of portable electronic instruments including pressure sensors, can solve the problems of large thickness, cannot prevent sunlight exposure, etc., and achieve the effect of low cost

Inactive Publication Date: 2005-06-22
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the thickness of the table is very large
On the other hand, the watch does not protect against sunlight hitting the sensor, especially when the watch is not worn on the wrist

Method used

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  • Portable electronic appliance including a pressure sensor
  • Portable electronic appliance including a pressure sensor
  • Portable electronic appliance including a pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1 to 4, a diver's watch 1 has a case 2 made of rigid synthetic material housing, inter alia, an electronic watch movement, a pair of pressure sensors sensitive to the ambient pressure outside the case, analog and / or Or digital display elements and electronic circuits for processing pressure data and displaying the results via display means. The housing 2 comprises a central part 3 made of synthetic material which encloses a central chamber 4 ( Figure 4 ), the chamber 4 is closed at the bottom by a rear cover 5 and at the top by a glass 6 surrounded by a glass frame 7 . The central chamber 4 houses the main components of the diver's watch, in particular the printed circuit board 8 with the main electronic circuits of the watch.

[0017] As can be seen in particular from FIGS. 2 to 4 , the pressure sensor 10 is placed in a chamber 11 which is arranged in the middle part 3 and opens out to the left outer surface 9 of the housing 2 so that the sensor can be accessed from ...

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PUM

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Abstract

The invention discloses an electronic instrument worn on the wrist, such as a diver's watch or an altimeter, with a pressure sensor (10) externally mounted in one side (9) of a housing (2) of the instrument. In a chamber (11) and closed by a cover (13) having at least one orifice (32) for transmitting ambient pressure to said chamber. The sensor is mounted in the chamber via a sealing gasket (12). A protective screen (14) is placed between the center wall (31) of the cover and the exposed surface (22) of the sensor to prevent solid objects and / or sunlight from damaging the sensor. Preferably, the shield is formed from a perforated plate fixed to the cover, and the holes (42) in the plate are laterally offset relative to each hole (32) of the cover to allow ambient pressure from the outside to the sensor All delivery paths of the exposed surface are tortuous.

Description

technical field [0001] The invention relates to a wrist-worn electronic instrument, in particular a diver's watch, a depth sounder or an altimeter, comprising a housing and a pressure sensor mounted in a cavity of the housing and having a surface exposed inside the chamber for receiving ambient pressure, the chamber opens outwardly to the outer surface of the housing and is closed on said surface by a cover having an outer wall, the The outer wall is provided with at least one orifice in front of the chamber for transferring ambient pressure from outside the housing to the chamber. technical background [0002] A wrist watch of the type disclosed in EP Patent No. 195636 is known, in which the chamber for the pressure sensor is arranged in a side projection of the case and opens into the top surface of the case, so that the sensor can be placed In proper position from the top. According to one of the currently most common constructions, the pressure sensor comprises a piezo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G99/00B63C11/02G04B37/18G04B47/06G04G21/02
CPCB63C11/02G04G21/02G04B47/06
Inventor S·克劳德V·布伦那
Owner ETA SA MFG HORLOGERE SUISSE
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