DE8129149U1 - Electric clock (I) - Google Patents

Description

The innovation relates to an arrangement according to the preamble of claim 1.

The purpose of the innovation is to design watches that serve aesthetic purposes in addition to time measurement to enhance.

Watches with a gear train that can be seen from outside the case have recently become one of the buyers' options Very popular with the public because of the Sight, especially of the open gear train and observation of the mechanical function of the faster moving Parts of it arouse nostalgic feelings.

So-called annual clocks with an open dial and thus visible clockwork are already known, but none Has encapsulation. As a result, the owner of such a watch should have the opportunity to look at both the back and forth swinging Torsion pendulum body, which is preferably held in the form of a crown, as well as on the sight and to enjoy the functional game, especially the faster moving elements of the fine mechanical gear train.

In a known arrangement of such an annual clock a narrow plate is provided for this purpose, in front of which the individual gear elements are in a row one above the other are arranged.

A small stepper motor is provided at the bottom of the board, which is driven by an assigned, quartz-controlled pulse generator circuit can be continued in seconds and through which the elements of the pointer mechanism can be driven.

The drive of the rotary pendulum of this well-known annual clock, which is designed as a torsion pendulum, rather than a fixed one mounted horizontal pendulum is designed by a completely independent of the aforementioned gear train electrodynamic system.

The gear train structure used in this known year clock with an open, visible clockwork structure with essentially only one board, but requires a so-called floating mounting of the individual gear elements, which makes relative large drive diameters and coarse teeth are required. In addition, this movement structure gives way to his? outer shape in and of itself from the conventional known type of clockwork. It is narrow and very elongated.

A direct mechanical drive of a torsion pendulum by this known clockwork arrangement is not possible. Of the associated separate drive of the horizontal pendulum by a special electrodynamic motor system requires a additional effort and entails an additional, not inconsiderable power consumption.

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There is also another table clock known in which also a quartz-controlled electromagnetic one below in the work frame Stepper motor is provided which drives the downstream gear train. Here, too, the gear shafts are in the majority of them are arranged vertically one above the other, but stored continuously between two plates. In the area of the Pointer mechanism, the plates have a lying sickle-shaped structure, which has recesses, which are a partial Allow insight into the gear train. In the upper area of the very narrow movement there is a ... not keeping track of time Serving escapement arrangement is provided, which is driven via the gear train and a mechanical spring accumulator will.

However, this movement is deliberately very elongated and very narrow in relation to its width, as it is on the one hand is not intended for clocks with torsion pendulum, on the other hand it is used for large, representative table clock cases target. A compact design of the clockwork like this for torsion pendulum clocks or for smaller, A more graceful watch case would be desirable, is therefore not aimed at with this known watch.

The innovation is therefore based on the task of a clockwork arrangement, in particular for an annual clock with a torsion pendulum of the type cited in the introduction, in which, with a stable structure of the clockwork frame, a comprehensive

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Observation of the functional play of the gear elements and also the drive play of an associated torsion pendulum is made possible, with a closed and compact structure of the clockwork and a pleasing arrangement of the gear elements can be reached.

This task on which the innovation is based is achieved by the measures listed in the characterizing part of claim 1 solved.

A number of developments and refinements of the innovation are set out in the further subordinate to claim 1 Claims enclosed.

The object of the innovation is in particular for use in such a torsion pendulum drive for a not the Torsion pendulum designed to keep time, in which by a shaft driven by the clockwork applied, with this via a compensating coupling connected to the cam disc with the torsion pendulum or the torsion pendulum spring connected and movable drive member can be acted upon in a driving manner.

Such a known drive for a torsion pendulum not used for keeping time is characterized by simplicity, Functional reliability and low power consumption.

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If the torsion pendulum drive is not available, the clockwork After the innovation, also for other clocks with open gear trains, such small style clocks etc. at a cheaper price Find use.

It is part of the task underlying the innovation, a suitable arrangement and a favorable structure of the gear train to achieve, so that both the drive of the pointer mechanism and the drive of the shaft acting on the torsion pendulum can be done in an expedient manner.

The cam disk for driving the torsion pendulum The supporting wave is expediently designed as a second wave in a known manner. This means that a second hand can also be used if necessary to be provided for in the clockwork of the clock according to the innovation. The seconds wave is advantageous in a manner known per se provided centrally to the minute shaft and the hour tube.

The structure of the clockwork plates after the innovation enables a very narrow formation of the webs or ribs, without the To impair the stability of the work frame and thus ensures a good view from practically all sides in the gear train. The innovation allows a comprehensive observation of the functional play of the faster moving ones Gear train parts as well as the torsion pendulum drive in all details.

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The movement according to the innovation surrounds a system of partially overlapping peripherals or overlapping gear wheels, in the majority of which are pivoted, especially in the area of the pointer mechanism, whereby recesses provided in the front and possibly also in the rear plate give the viewer a glimpse into this gear train system as such or through which: it through enable.

In the drawings, the innovation is shown on the basis of an exemplary embodiment that is described in the following description is explained in detail:

Show it:

Figure 1 is a front view of the clock according to the innovation.

Figure 2 is a front view of the movement of the clock according to Fig.

Figure 3 is a side view of the movement of the clock according to Fig.

FIG. 4 shows a view of the movement of the clock according to FIG. 1 from the back.

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In FIG. 1, the clockwork 2 with the dial 3 is arranged on a common work carrier plate 1. That Dial 3 is ring-shaped and allows observation through its recess 4 in the middle of the clockwork 2. The clockwork 2 is provided with a skeleton-like contour, which enables the observation of the functional play, in particular, the faster moving gear elements allowed in detail.

The dial 3 is attached to the clockwork 2 and forms with it this together an assembly unit, which is on the work carrier plate 1 is fastened by screwing from below.

The work carrier plate 1 is mounted on two columns S and

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supported on this by shaped nuts. The two pillars 5

are attached at the bottom of the watch's case base 7.

A torsion pendulum 8 is assigned to the clockwork 2, which is not used for keeping time, but "only for movement play. It is formed by the pendulum crown 9, which is held in a freely swinging manner on a torsion strip 1o. About this Torsion strip 1o is the torsion pendulum 8 from the clockwork 2 of the Drive for maintaining the vibratory movements conveyed.

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In the interior of the housing base 7, a structural unit 11 can be provided, which essentially consists of a housing part 2o as well as a printed circuit board and a small speaker, both of which are not visible are.

The structural unit 11 is used for generation and administration acoustic time signals, preferably in the form of gong strikes, which electronically match the mechanically generated tones of the same type with regard to the harmonic component and with regard to the decay characteristic are simulated. These electronically generated acoustic time signals are preferred for the ongoing acoustic display of the time, especially on the full and half hour.

The structural unit 11 has tab-like projections on the side and 13, which are integral with the housing part 2o, and with the help of which the structural unit 11 is attached to threaded bolts of the columns 5, which protrude into the interior of the housing base 7, is fastened by nuts 15 screwed on.

The assignment of the structural unit 11 is an appropriate possible addition to the arrangement according to the innovation but not part of the subject matter of the same.

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By means of the knurled adjusting screws 16 assigned to the housing base 7, according to the innovation, the watch is on the plate 18 carrying it adjustable to ensure safe operation of the drive for the Torsion pendulum 8 to ensure.

In Figures 2, 3 and 4, the movement 2 of the clock is shown in more detail after the innovation.

Front plate 25 and back plate 26 are connected to one another by an upper work pillar 27 and two lower work piers 28
tied together. This is done by means of pillar screws 29 or dial bolts 3o.

The clockwork 2 is by retaining screws 31, which in transverse
threaded holes cut through the lower work pillars 28 are fastened to the work carrier plate 1.

In FIGS. 2 and 3 there is a top left on the work pillar 27
Dial angle 21 arranged, which is used to hold the
Dial 3 on clockwork 2 is used. For this purpose, a threaded hole 21a is provided through which the dial 3 with the
Dial angle 21 is screwable.

On the opposite side of the work pillar 27, at the top of the back plate 26, a bracket 22 is arranged, which has a bend 22b and for the resilient latching. Recording of the upper part of the pendulum spring of the Pendeifedei 1o des
Torsion pendulum 8 is used.

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For the sake of clarity, however, in Figures 3 and 4, the pendulum spring top and the pendulum spring 1o des Torsion pendulum 8 not shown.

For holding the torsion pendulum 8 on the bracket 22, an arrangement such as this would expediently come into question in Figures 1 and 2 of DE-OS 29 15 858 is disclosed.

There is the torsion band (11) of the torsion pendulum spring (2) connected to a pendulum spring upper part (13), which is displaceable against the action of a helical spring (16) in a Socket (17) is arranged. The shaft (17d) of this socket (17) would correspondingly between the fork parts 22a, des Bracket 22 get to the bracket and would be with the collar (17c) between the bend 22b and the Lock the fork parts 22a of the bracket 22. The upper part of the pendulum spring (13) would come under the action of the helical spring (16) with its collar (15) on the bend 22b to the plant. The reference symbols in brackets correspond to those the cited DE-OS 29 15 858.

The feeder plate 25 and the backplate 26, which both are expediently designed as contour plates, are tapered towards the top, approximately semicircular Lower part 76, an approximately circular middle part 8o and an elongated, elongated upper part 83 are formed.

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Between the # order- (25) and the back plate 26 is below, namely in the back plate 26 between the two pillars 28, the stepping motor 32 is arranged. This can be seen from Fig. 2, where the stepper motor through a tear-out of the front plate 25 in its Arrangement on the lower part 76 of the backplate 26 can be seen in detail.

The stepping motor 32 consists of an elongated coil 32a, into which two pole plates 32b, 32c are inserted, which the cylindrical permanent magnetic rotor 35 mounted between the "front (25)" and the rear plate 26 and which are magnetically bridged by a core sheet 32d which is also pushed into the coil body 32a are. Each of the two pole plates 32b, 32c is supported by two pillars 33, 33a fixed in position, of which one (33) is connected to the pole plate 32b, 32c by a screw 33b.

Between the pole plates 32b, 32c and the front plate 25, the rotor 35 has a drive 34, which with the Wheel 36a of a mounted between the front (25) and rear plate 26 meshes first gear shaft 36 on the The perpendicular of the clockwork 2 is arranged.

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In the vicinity of this first gear shaft 36, in the lower part 76, there is the front (25) and rear plate 26 an opening 77 is provided, in each of which a projection 78 protrudes, which the two bearings for this Wear gear shaft 36.

A drive 36b connected to the first gear shaft 36 meshes with the wheel 37a of a second gear shaft 37 which also in the mid-vertical of the clockwork 2 between the front (25) and Kinter plate 26, namely in the place is stored, where the upwardly tapering lower part and the circular central part 8o of the front (25) and Unite backplate 26.

The rotor 35 of the stepping motor 32 and the first and second gear shafts 36, 37 are each preferably red colored bearing elements (75) of the front {25) and the back plate 26 stored, which in corresponding holes are used and prevent wear on the bearings of these relatively high-speed gear elements (35,36,37).

The wheel 37a of the second transmission shaft 37 meshes with an intermediate gear 4oa of an intermediate gear shaft 4o, which is laterally to Vertical center line of the clockwork 2 in the circular central part 8o of the front (25) and rear plate 26 is stored.

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The intermediate gear 4oa, on the other hand, meshes with the one on the seconds wave 41 arranged second wheel 41a. The reduction between the drive 34 of the rotor 35 and the second gear shaft 37, is chosen so that the latter rotates once a minute.

The seconds shaft 41 is on the one hand in the back plate and on the other hand in the one with the minute wheel 39a through a Friction connected minute shaft 39 is mounted, which bridges the ring opening 81 of the circular central part 8o in a Web 82 is performed.

If the clockwork "■ is assigned a torsion pendulum 8, so the seconds shaft 41 is extended to the rear and carries the cam disk 85 there, which is connected to the torsion band (Fig. 1) firmly connected elongated drive member (not shown) intermittently applied and thereby the Torsion pendulum 8 drive pulses transmitted. This drive mechanism is shown in Figures 3 and 4 for clarity because of not shown. However, all of its details can be found in de ^ DE-OS 29 15 858 (Figs. 1, 2, 2a, 5 and 6).

The seconds shaft 41 can also be extended forwards, i.e. in the direction of the dial 3 and there a second hand wear if deemed appropriate.

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However, this embodiment is shown in FIG. 1 in the Embodiment according to the innovation not provided.

A drive 37b of the second gear shaft 37 meshes with the wheel 38a of a further gear shaft 38 which is laterally to Center perpendiculars of the clockwork 2 in the annular central part 8o, specifically with respect to the intermediate wheel shaft is mounted on the opposite side. Idler shaft 4o and further gear shaft 38 are therefore on both sides of the vertical center line at approximately the same distance from each other this and also stored at about the same height.

A drive 38b of the further transmission shaft 38 meshes with the Minute wheel 39a of the minute shaft 39. The reduction between the drive 34 of the rotor 35, the first and the second gear shaft 36, 37 and the further gear shaft 38 and the minute wheel 39a, is chosen so that this with its minute shaft 39 makes one revolution per hour.

In the mid-vertical of the clockwork 2, approximately in the vicinity of the position where the upper part 83 of the front (25) and rear plate 26 continues from the circular central part 80, the change 42 is arranged. This is done in the A bearing pin 43 riveted to the rear plate 26, on the free end of which the change 42, consisting of the change gear 42a and the changeover drive 42b, is freely mounted, in such a Arrangement that the change gear 4 2a

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immediately behind the front board 25 with the Minute shaft 39 meshes permanently connected minute drive 39b, while the change drive 42b through an opening 84 the front plate 25, which for this purpose has an extension 84a at this point, protrudes and there with the in front of the front plate 25 arranged hour wheel 45a is engaged, which is fixedly connected to it Hour tube 45 is rotatably mounted on minute shaft 39.

The change 42 is on the bearing pin 43 through a front on this applied disk 46 secured. The front plate 25 is in the opening 84 by the change gear 42b protrudes freely.

On the side of the change 42 is in a molding 8oa of the circular middle part 8o of the front (25) and Arranged on the back plate 26 is an actuating drive 5ob which meshes with the change gear 42a and is mounted on a shaft 5o, which protrudes through the back plate 26 to the rear and there carries an actuating element 51 on an extension 5oa. At a manual actuation of the adjusting element 51 is driven by the adjusting drive Sob, the Weehseirad 42a and thereby over the minute wheel friction, the minute shaft 39 with the minute hand and, via the change mechanism 42b, the hour wheel 45a with the hour tube 45 and the hour hand adjusted.

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The backplate 26 has openings 76a at the bottom in the region of the coil flanges (32a) of the stepping motor 32, from which connections 32e protrude and are accessible there for the electrical connection with the clock circuit.

The cam disk 85 for driving the torsion pendulum 8 (Fig.1) is provided with a bushing 85a on the rear Extension of the seconds shaft 41 freely rotatable. By a spiral roller 86a of a spiral spring 86 on the one hand and through the backplate 26 on the other hand, the cam 85 is on the seconds shaft 41 in the axial direction secured, while the spiral 86b, which is formed on the spiral roller 86a, on the inner diameter 85b of the The cam disk 85 exerts a frictional effect so that it can be adjusted relative to the seconds shaft 41. This adjustability is of importance in connection with the functional play of the torsion pendulum drive. There are more details on this Details can be found in DE-OS 29 15 858 already cited.

The cam disk 85 now continues to act upon the torsion band 1o attached to and with during its rotary movement this movable drive member, when it has come into the area of the path of the cams 8Sc »This is the torsion» Pendulum 8 intermittently a drive via the torsion strip 1o mediated, which ensures the maintenance of the vibrational movements.

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The functional play of this drive mechanism takes place outside of the visible work frame and is therefore the same like the game of movement of the faster moving elements of the gear train - for those interested in the accessible for easy observation.

According to a possible preferred embodiment of the innovation, the front panel 25 and the rear panel are each other formed approximately congruent. However, such a design of the backplate 26 is also conceivable that this has a contour that is different from the front plate 25.

The approximately congruent formation of the front panel 25 and the rear panel 26 has the advantage that a Looking through the system of overlapping wheels, especially of the pointer mechanism, is very much favored.

Claims (6)

KIIiNINUIiR & OBHRGl-iiLt * ·· *
Factory for technical
Drives and apparatus
St «Georgen / Black Forest Utility model registration Electric clock (I) Expectations Electric clock with one-from outside the clock, Mainly recognizable by a ring-shaped dial hindurcli clockwork with visible wheels, which are mounted on at least one circuit board, preferably a so-called annual clock, in particular with an assigned torsion pendulum not used for time control; with an electric stepper motor driven by an electronic pulse generator, preferably one electronic quartz oscillating circuit with a downstream frequency divider can be continued and via the gear train the pointer advances and with the in the lower Part of the clockwork arranged stepper motor in the gear train initially n-gear shafts are arranged downstream, which gear elements carry, characterized Μ * - ¹ »« that at least the contour of the front plate (25) in the lower part (76) of the clockwork (?) shows an upwardly tapering course, that at least the front plate (25) has a recess (77) in this area and there at least one wheel ( 36a) of the n-gear shafts ( ^7, 6, 37) initially downstream of the stepping motor (32) is visible, that at least the front plate (25) in the area of the pointer shafts (39, 41, 45) has approximately the shape of a has closed circular ring (8o), in which further gear elements (38, 4o) are mounted and through which the system interlocks, overlaps with its peripheries, in their The plurality of hinged gear wheels (37a - 42a, 45a) is visible in the area of the pointer mechanism, at least one of the n-gear shafts (36) and the pointer shafts (39, 41, 45) each in the recesses (77, 81) protruding formations (78, 82) are mounted, that at least the front plate (25) has a narrow, elongated upper part (83), which is made up of the periphery of the approximately circular central part (8o) extends. If 2. Electric clock according to claim 1, characterized in that the front plate (25) and the back plate (26) are formed essentially congruent. 3. Electric clock according to claim 1, characterized in that the contour of the lower part (76) of the front (25) and the shape of the backplate (26) corresponds approximately to the cross section of a dome. 4. Electric clock according to claim 1, characterized in that that in the area of the transition from the lower part (76) to the annular central part (8o) of the Front (25) and the back plate (26) are the bearings for the gear shaft (37) of the clockwork (2) is provided. 5. Electric clock according to claim 1, characterized in that in the region of the transition from the circular ring-shaped Middle part (8o) in the narrow elongated upper part (83) at least in the front plate (2S) an extension (84a) the plate contour is provided for the passage of the change gear (42b). 6. Electric clock according to claim 1, characterized in that that the stepper motor (32) is attached to the backplate (26) and that its drive (34) and the Wheel (36a) of the first gear shaft (36) are arranged behind the front plate (2S). - S.