Horology: time measuring systems or devices – Combined with disparate device – Ambient condition detector
Patent
1992-12-30
1994-10-18
Roskoski, Bernard
Horology: time measuring systems or devices
Combined with disparate device
Ambient condition detector
73754, G04B 4706
Patent
active
053574885
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a watch having a sensor for sensing an environmental condition such as hydraulic pressure or atmospheric temperature.
BACKGROUND ART
Japanese Utility Model Application Laid-open 1-136484 discloses a watch having a pressure sensor where the sensor is mounted in a side wall of a watch case and a supporting member is provided on the sensor.
Referring to FIG. 7 showing the watch, the watch case comprises a body 52 having a module holding portion 52a and a sensor holding portion 52b. A glass 53 is mounted on an upper portion of the body 52 through a packing 53a, ensuring waterproof of the watch. A module 55 is mounted in the holding portion 52a and a pressure sensor 56 is mounted in the holding portion 52b.
On the sensor holding portion 52b, a protecting plate 58 is provided in front of the pressure sensor 56 through a watertight ring 57 engaged with the outer periphery of the sensor. Furthermore, a fixing member 59 is mounted on the protecting plate 58. The protecting plate 58 and the fixing member 59 are secured to the body 52 with screws (not shown).
The pressure sensor 56 is electrically connected to a conductive flexible substrate 54 which is soldered to an inner wall 56a of the sensor 56.
An opposite end 56b of the substrate 54 is connected to the module 55 with a screw 60. Thus, the sensor 56 is electrically connected to the module 55.
In operation, the pressure exerted on the sensor 56 is detected and converted into a digital signal by an electronic circuit provided in the module 55 to be displayed on a digital display (not shown) of the watch.
However, such a sensor holding structure has not a sufficient shockproof property. Consequently, if the watch is dropped, the sensor which is precisely made may break by impact. Furthermore, the sensor holding portion has a complicated structure, which requires a troublesome machining. As a result, the number of manufacturing processes increases, causing the cost for the watch to increase.
An object of the present invention is to provide a watch having a sensor which has a sufficient shockproof property and may be easily manufactured at a low cost.
Another object of the invention is to provide a watch having a sensor which has a high waterproof effect.
DISCLOSURE OF THE INVENTION
A watch having a sensor according to the present invention is characterized by a watch case, a sensor holding portion provided in the watch case, the sensor holding portion having a sensor housing space formed therein, a sensor protecting tube secured in the sensor housing space, the sensor being held in the sensor protecting tube in such a position that a sensing portion thereof is outwardly oriented.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitative of the present invention, and wherein:
FIG. 1 is a sectional side view showing a main part of a watch having a pressure sensor according to the present invention;
FIG. 2 is a plan view showing the watch;
FIG. 3 is an enlarged front view showing the main part of the watch;
FIG. 4 is a sectional side view of a second embodiment of the present invention;
FIG. 5 is a sectional side view of a third embodiment;
FIG. 6 is a perspective view showing a main part of the third embodiment; and
FIG. 7 is a sectional side view of a conventional watch.
BEST MODE FOR EMBODYING THE INVENTION
Referring to FIGS. 1 to 3 showing
REFERENCES:
patent: 4783772 (1988-11-01), Umemoto et al.
Murata Toshio
Nakamura Tadashi
Udo Yurie
Citizen Watch Co. Ltd.
Roskoski Bernard
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