DE6808217U - HAND GEAR FOR WATCH MOVEMENTS - Google Patents

Description

DR. ING. ERNST MAIGR BATENTAIfWAI ₁ T

8 MUNICH 22

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A 41968 November 22, 1968

Dr. EM / Bx

Company GEBRÜDER JUNGHANS GMBH, 723 Schramberg / Wttbg., Geißhaldenstrasse

Pointer gear for clockworks

The invention relates to clockworks for wall and table clocks of the type with "second from the center", the shaft of which backwards in the back plate and in front of the pierced minute shaft is mounted and concerns the formation of the pointer gear. In particular, the invention They are used in electric battery clocks. In these, the drive assembly and the gear regulator assembly can be relatively small

Sparkaue Sdiramberg Bankhaus Merdc, Finde & Co., Munich, No. 25 464 Bank haul H. Aufhäuier, Munich, No. 53 597 Poitidiedt, Mönchen 153 8 Ot Telegram address! Patonlienlor

are built compared to the dimensions required for the spring-loaded clocks, so that the frame width is also small and thus the distance between the bearings of a shaft supported at both ends. The size and weight of the Pointer, as well as the one protruding from the front plate, the dial penetrating shaft parts is given by the shape and size of the housing. With a small frame width, as is the case in particular with battery movements is peculiar, the pin clearance is therefore very noticeable at the end of the pointer shafts, as the pointer is no longer in a plane parallel to the Rotate the dial and also the bearing point in the front plate is subject to increased wear.

The invention is based on the object of eliminating these disadvantages, which is achieved in that the minute shaft on its shaft in a pipe socket protruding from the front plate is stored and the hour pipe in turn partly on this pipe socket, partly on the end of the minute wave protruding from it. Depending on the type of production and the material of the front plate, the pipe socket can be made in one piece be molded onto this, but can also be riveted into it as a special automatic turned part.

Further features and advantages of the invention result

from the following description of an embodiment «from the Drawing and the protection claims.

The drawing shows, on a greatly enlarged scale, a side sectional view through the pointer gear of a battery clockwork as it is intended for wall and table clocks.

The movement shown in the drawing consists essentially from the rear plate 11, the front plate 12, both held together by frame pillars 13, which are designated as a whole with 14 Gear regulator section and the pointer gear, also designated as a whole with 15, the structure of which will now be described in detail: In accordance with the prerequisites, this is a movement with a so-called second from the center. The second hand shaft 16 is with her rear pin 16a mounted in the backplate 11; 16b is the second drive, 17a / 17b intermediate gears that lead to the minute wheel 18a, the minute drive 18b of which meshes with the change wheel 19a, while the Change gear drive 19b is in engagement with hour wheel 20. The forward-facing part of the seconds shaft 16 is tubular in the one at 18c elongated, axially pierced minute drive 18b mounted in stone chucks 21 and 22. On the leading end 16c of the second wave is the

Second hand (not shown) attached. The minute drive 18 is not stored directly in the front panel 12, but indirectly, in that in the front panel of the pipe socket 23, which is for this purpose with a collar 23a is provided, is riveted. The pipe socket 23 supports the extension 18c of the minute drive 18b over a length that is a multiple of Thickness of the front plate is 12, whereby an adverse effect of the bearing clearance on the position of the pointer to the dial is prevented. At the same time, the pipe socket 23 serves to support the rear section of the hour pipe 20a, while the front half of the hour pipe is on the pipe extension 18c of the minute drive 18b leads. For the hour hand, too, the exact centering to the pointer shaft hole is in the (not shown) dial guaranteed, as is its plane-parallel The barrel ran down the dial and the other hands.

While in the illustrated embodiment of the bearing pipe socket 23 is riveted into the front plate 12 as a special turned part, it can be manufactured in one piece with this, for example when the front panel is molded from a plastic.

The storage of the second shaft 16 in stone linings 21 and 22

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in the axial through-hole of the minute drive 18b, 18c has the advantage that the resulting relatively wide bore is easy to manufacture in terms of production technology.

Claims (1)

ti I I »III I I I I * Ft I · I • · Il ■ I Il I t · Il PROTECTION CLAIMS 1 »Pointer gear for movements of wall and table clocks with Second from the middle of their shaft backwards in the back plate and in front is mounted in the pierced minute shaft, characterized in that that the minute shaft (18b / 18c) on its shaft in a front from the front plate (13) projecting pipe socket (23) is mounted, and the hour tube (20a) partly on this pipe socket (23) partly on the minute shaft (18c) protruding from it. 2. Pointer gear according to claim 1, characterized in that that the bearing pipe socket for the minute shaft (18b, 18c) and the stem tube (20a) is integrally formed on the front plate (12). 3. Pointer gear according to claim 1, characterized in that that the pipe socket (23) which is provided with a seat collar (23a) for the hour wheel (20) is riveted into the front plate (12). Pointer gear according to one or more of the preceding 1 ) 111) '1) 1 III It »t · f · Claims, characterized in that the seconds wave (16) in particular Bearing chucks (21, 22) in the axially pierced minute shaft (18c) is stored.