Classifications

• • G—PHYSICS
  • G04—HOROLOGY
  • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
  • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
  • G04C3/001—Electromechanical switches for setting or display

Definitions

• the invention relates to watch cases with pushbuttons serving to actuate controllable elements and movable against spring pressure, as are used both in mechanical and electric clocks, in order to trigger the most varied functions, such as time stop devices in stopwatches or display switches in electric clocks.
• Push buttons of this type are usually designed as elements which are arranged in a recess or opening in the viewing wall and protrude beyond the outside of the watch housing, for their accommodation, especially if reliable guidance is to be achieved, a lot of space is required, in particular for the return spring for to be able to accommodate the button and the seal of moving parts in relation to the housing. This results in large housing wall thicknesses if you want to avoid special designs for the clockwork.
• buttons or button bodies serving for the actuation of the elements, which act directly or via rigidly connected intermediate elements, such as actuating plungers, on the elements to be controlled, in that they itself or a rigidly connected actuating plunger is rigidly connected to a guide element, which in turn is at a distance from the button, ie at a point on the housing where sufficient space is available to achieve safe guidance anyway, and which leads to its guidance via the rigid connection with the key.
• Such key arrangements have proven their worth. However, they extend over a large part of the circumference of the housing and therefore have difficulties, in particular in cases where several keys have to be accommodated at intervals around the circumference of the housing. Presentation of the invention
• the invention is primarily based on the object of providing a watch case with pushbuttons that are used to actuate elements to be actuated and that can be moved against spring pressure, which has a type of pushbutton guidance that not only enables the use of buttons or button bodies with large printing areas and thereby ensures that the actuating pressure is largely the same at all points on this printing surface, but which, moreover, allows an extremely compact design to be achieved which enables all the elements required for actuation to be combined to form a possibly interchangeable structural unit.
• At least one further link can be provided as an element for aligning the pressure surface and for ensuring a parallel displacement during the application of pressure, which links the rigidly connected links to a parallelogram guide.
• stops, slideways or the like can also be provided for the key body, which ensure extensive parallel displacement, which guide it from the outside or, if necessary, with the aid of recesses, bores, slideways and the like provided in its interior.
• the button body is used for guiding it
• the rigidly connected handlebars training as a stamped or embossed part with end or handlebars is recommended in many cases. End faces and a central part connecting them in one piece, which can optionally be provided with openings, openings and the like, should these be necessary or expedient for constructional reasons.
• an actuating plunger with its own return spring only needs to rest on the key body.
• An actuating key without a return spring can be designed such that it can be connected to the key body so that it can move without difficulty.
• FIG. 1 shows a part of the housing wall of a watch case with a recess on the housing periphery for receiving the push button
• Fig. 2 shows a section approximately along the line 2 - 2 of Fig. 1 with a look into the key body from the open side.
• Fig. 3 is an end view of the key unit approximately along the line 3 - 3 of Fig. 1 and
• the push button i.e. the actual push button body and the elements used to guide it, are combined to form a compact structural unit which can be firmly inserted into a recess 111 on the circumference of the watch case 11, for example by gluing. can be clamped or screwed therein, into which an actuating push 12 which is arranged displaceably in the housing wall projects.
• the parts of the key unit are carried by a base plate 13. However, they could also be installed individually in the recess 111 if corresponding bores and recesses are provided on their side walls as bearings and stops for the guide elements of the key body.
• a plurality of supports 14, 15, 16 and 17 are connected to the base plate 13, which is essentially rectangular in the floor plan (not shown), and which serve as a support for bearing points for handlebars 24, 25 and 26.
• These handlebars are hinged at their other ends to supports 34, 35 and 36, which are connected to the pushbutton body 23 designed as a substantially U-shaped channel and also serve as a carrier of bearing points for these handlebars 24, 25 and 26.
• the handlebars are shown lying in a plane running perpendicular to the plane of the drawing, which approximately represents the middle position between the two possible end positions of the key body, the upper one of which is indicated by broken lines.
• the links 24 and 25, which are delimited by dash-dotted lines in the drawing, are rigidly connected to one another by means of a connecting piece 27.
• the links 24 and 25 can be connected in one piece with the connecting piece 27, as is assumed in the exemplary embodiment.
• the bearing points for the handlebars are formed in the supports as cylindrical bores, in which cross-sectional approaches 241 or 242, 251 or 252, 261/262 or 263 engage, with their four edges on the circumference of the bearing shells serving holes.
• the journals 241 and 251 have the same pivot axis and, viewed in this way, are spaced one behind the other so that the associated links 24 and 25 can be pivoted in plane-parallel planes.
• the links 26 are provided in the exemplary embodiment shown, which, as can best be seen from FIG. 4, supplements the link pair 24, 25 to form a parallelogram guide .
• An alternative to this guide handlebar 26 is indicated in the drawing in dash-dotted lines.
• the supports 16, 17 and 36 are replaced by a sliding guide 37, which can be formed by bending a shoulder on the base plate 13.
• a spring 22, which is supported on the base plate 13, serves to return the key body 23 to the starting position.
• a stop 341 on the support 34 which, when it moves against a nose 141, rests on the support 14.
• a driver 21 is provided on the inside of the key body.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Electric Clocks (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6176605

Family Applications (1)

Country Status (4)

Cited By (1)

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Citations (3)

• 1982
  • 1982-10-26 DE DE3239553A patent/DE3239553C1/de not_active Expired
• 1983
  • 1983-10-25 WO PCT/DE1983/000182 patent/WO1984001838A1/de not_active Application Discontinuation
  • 1983-10-25 EP EP83903377A patent/EP0124550A1/de not_active Withdrawn
  • 1983-10-26 IT IT49226/83A patent/IT1197733B/it active

Patent Citations (3)

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