DE1940250A1 - Spiral spring end attachment on wristwatches - Google Patents

Description

DR. RUDOLF BAUER DIPL.-ING. HELMUT HUBBUCH

PATENT LAWYERS 1840250

4.8.1969

753 PFORZHEIM.

WESTLICHE 31 (AM LEOPOLDPLATZ) TEL .: (Ö7230 2429O

I "a. Pforzheimer Uhren-Rohwerke Inh. Rudolf Wehner, Pforzheim

"Spiral spring end attachment for wristwatches"

The invention relates to the coil spring end attachment with wristwatches, especially with electr. Clockworks by means of Spiral studs fixed or adjustable on the balance cock.

In watch movements with a spiral oscillator, the spiral spring sits on the balance shaft by means of a spiral roller. The expiring end of the The spiral spring is attached to the balance cock by means of spiral studs set, which then by means of drive in the event of an impulse the balance vibrations result. Usually this is the Spiral end in; a hole in the spiral block with a tapered pin uptight. This deforms the spring edge, also is its attachment point - not clearly fixed this requires a lengthy adjustment of each movement, which is especially not acceptable in large-scale production- «

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The end of the spiral has also already been glued into the spiral block ', However, this brings undesirable tension during drying and also with clockworks for electr. Wrist watches is not possible because the spiral spring is used here at the same time to conduct electricity and thus electr. conductively attached must be o

These disadvantages are now in the spiral spring securing solved according to the invention in that the stud an approach with curvature corresponding to the radius of the Spiral has on which curvature flank the S-spiral spring end firmly attached, especially riveted. This avoids kinking and tensioning of the spiral spring at the fastening end and, moreover, accurate riveting reached fixed fastening point, as is a prerequisite for efficient series production. In addition, is at electrical movements also ensured a perfectly conductive connection. -

In detail, the flank at the base of the spiral block can be have a groove with a curvature corresponding to the outlet radius of the spiral, in which the spiral end is caulked, xrobei the! flank or groove depending on the use of the spiral block on the

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Balance cock a convex or concave curvature on v / iron can -

Further details of the attachment according to the invention are then shown and described with reference to the drawing, namely show:

F ig · Λ the view of an arrangement according to the invention,

Fi g ♦ 2 and 3 the view or »plan view of a first Embodiment of a spiral block according to the invention,

'Fi g, 4 and 5 the view or "plan view of a second Embodiment of a spiral block according to the invention so

As can be seen from the drawing, the spiral

spring, 1, as known per se, by means of a spiral roller 2 on the Balance shaft 3 · According to the invention, there is now the spiral block with an approach 5 with curvature corresponding to the outlet / ■ radius' of the spiral end 6 provided. Here is the end of the spiral at 7 and 8 without kinking at a precisely defined point Caulking riveted, as is the case with rational series production is desirable. The spiral block 4- is on the ünruhkloben 9

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. placed and held by means of screw 10 «is next to it in the Drawing still the back pointer 11, as known, for gear regulation The spiral block 4 can also be provided for fine adjustment of the rate of decline on a piton mobile known per se sit,, . .

In Fig. 2 to 5 two different embodiments of SpiralklotZeen are then shown, namely in Fig. 2 and 5 that 4 according to Figo 1. with attachment 5 and groove 12 for receiving the spiral end 6. and riveting at 7 and 8 _O. Here is the groove 12 concavely curved in accordance with the arrangement of FIG. 1o'Bei 180 ° twisted arrangement of the spiral Klötzchens at the balance cock is shown in FIG. 4 and 5, a stud 4a use with neck 5a ^ZVL whose groove 12a in for receiving the coil spring end 6a and riveting 7a and 8a is to be curved convexly.

10 9809/09 2 6

Claims (1)

Patent claims: Spiral spring end attachment for wristwatches, especially for electr. Clockworks by means of spiral blocks arranged fixedly or adjustably on the balance cock, characterized in that the spiral block has an attachment with determination corresponding to the outlet radius of the spiral, on which curvature flank the spiral spring end is firmly attached; especially riveted. ·. / ■. ., .- ^: - 2 spiral spring end attachment according to claim i, characterized in that that the hook at the approach of the spiral block has a Uüt with a curvature corresponding to the outlet radius of the spiral possesses, in which the spiral end is caulked. 3. Spiral spring end attachment according to claim 1 or 2, characterized in that ^ the flank or _o courage depending on the use The spiral block on the balance cock is convex or concave Has curvature » 4. · Spiral end attachment according to one of the preceding Claims, characterized in that the spiral block with approach for the curvature flank or groove, as known per se, adjustable on the balance cock, iö 9809 / O92S Lee on the side