EP0940734B1 - Striking clock with device for disconnecting the striking mechanism - Google Patents

Description

The invention relates to a striking mechanism clock with a slide hammer mechanism and with a shutdown device for temporarily switching off the arithmetic mechanism, its Fall rake with an axially spring deflectable stylus a probe arm falls on an hourly scale and that by one actuated by a minute shaft trigger cam Release lever is set in motion, in which the Switch-off device driven by the clockwork, in 24 Hours once revolving locking disc that with a sector-shaped locking cam is provided and by a feeler is scanned with which the gear train of the striking mechanism alternately locking and releasing Release lever in operative connection via a locking lever stands.

A striking clock with a device for switching off the percussion of the generic type is for example known from DE 33 23 420 C2 and US-PS 4 508 456.

With these striking clocks, the striking mechanism can be used with the help a locking disk rotating once in 24 hours during a certain period of time by the circumferential length the locking cam of the locking disc is determined, switched off, i.e. prevented from performing gong beats become. It can happen that the function that after the respective lifting of the striking mechanism lock Gong or chimes are performed that are not correspond to the current time.

Especially with hourly and half-hourly striking this is due to the fact that both when the power is off Percussion as well as at times the locking mechanism switched off the impact mechanism of the drop lever, which is the fall rake between the individual stroke executions the striking mechanism in its upper starting position holds, is lifted off the rake, so that the rake remains in its fallen position, and only in again its upper starting position is raised when on again Hourly strike is carried out. Usually with his stylus on the circumference of the hour scale The lever of the falling rake is therefore located when switching on the striking mechanism or when picking it up the striking mechanism lock in a position in which the The stylus of his stylus is not on the circumference of the Hourly scale, but axially deflected in relation to it radially lowest position on the hour tube the face of the hourly series.

This lowest case position of the corresponds to the situation at the beginning of a 12-hour strike occupies. That means that when you pick it up the lock or when the hammer mechanism is switched on again this first executes twelve hourly strikes to do so the falling rake through the creator wheel into its upper one Starting position to raise. This also happens if that Unlocking the striking mechanism lock, for example such a time occurs that the striking mechanism, for example at 7:00 a.m. or 8:00 a.m. its regular Beating resumes.

The invention has for its object in a Striking clock of the type mentioned a simple one Establishment 'through which ensured will that after the respective lifting of the striking mechanism lock no incorrect gong or bell strikes become.

This object is achieved in that the hourly scale with a side in the tactile range of the axially deflected stylus arranged lifting curve is provided, which is from the lowest radial level the hourly scale up to the radial level of the hourly rate extends from which the locking disc of Switch-off device the function of the slide hammer releases again.

The solution according to the invention has the particular advantage that with a single component, preferably according to Claim 2 in the form of a disc on the hourly scale can be attached, it is ensured that after the Deactivating the striking mechanism lock only the striking mechanism at a time the number of hourly strikes corresponding to the current time performs.

By designing the invention according to the claims 3 and 4 can also be achieved that e.g. at a Half-hour striking mechanism without an additional component too the immediately after lifting the striking mechanism lock following timely hour or half-hour strikes at the exact time.

Fig. 1

in vereinfachter Darstellung eine Frontansicht der Frontplatine mit den Steuereinrichtungen eines Halbstunden-Schlagwerkes und mit einer Schlagwerksabschaltvorrichtung in einer Funktionslage, in welcher die Schlagwerkssperre eingeschaltet ist;

Fig. 2

in vergrößertem Maßstab eine Draufsicht II aus Fig. 1;

Fig. 3

in ebenfalls vergrößerter Darstellung die wesentlichen Steuerungsteile des Schlagwerkes in Frontansicht;

Fig. 3a

einen Teilschnitt IIIa-IIIa aus Fig. 3;

Fig. 4

eine Teilansicht IV aus Fig. 3;

Fig. 5

die gleiche Ansicht wie Fig. 1, in der jedoch die Schlagwerksabschalteinrichtung ausgeschaltet ist;

Fig. 6

eine Ansicht gemäß Fig. 5, jedoch ohne Fallrechen und Fallhebel in einer Schaltlage der Steuerteile, in welcher das Schlagwerk total abgeschaltet ist;

Fig. 7

eine vereinfachte Ansicht gemäß Fig. 1, jedoch mit weniger Steuerteilen in einer Position, in welcher die Schlagsperre wirksam ist;

Fig. 7a

den Auslösenocken der Minutenwelle in Frontansicht und

Fig. 8

die gleiche Ansicht mit den gleichen Teilen wie Fig. 7 in einer Position am Ende der Sperrzeit des Schlagwerkes.

The invention is explained in more detail below with the aid of the drawing. It shows:

Fig. 1

in a simplified representation a front view of the front plate with the control devices of a half-hour striking mechanism and with a striking mechanism shut-off device in a functional position in which the striking mechanism lock is switched on;

Fig. 2

on a larger scale a plan view II from FIG. 1;

Fig. 3

the essential control parts of the striking mechanism in a front view;

Fig. 3a

a partial section IIIa-IIIa of Fig. 3;

Fig. 4

a partial view IV of Fig. 3;

Fig. 5

the same view as Figure 1, but in which the hammer mechanism is switched off.

Fig. 6

a view according to FIG 5, but without drop rake and drop lever in a switching position of the control parts, in which the striking mechanism is completely switched off.

Fig. 7

a simplified view of Figure 1, but with fewer control parts in a position in which the impact lock is effective.

Fig. 7a

the trigger cam of the minute wave in front view and

Fig. 8

the same view with the same parts as Fig. 7 in a position at the end of the blocking time of the striking mechanism.

In the example description below, the Knowledge of the structure and functioning of a Half-hourly striking mechanism largely assumed.

Only the pin impeller is from the gear train 1, the pinion 3 and. that engages with this standing creator wheel 4 shown.

The pinion 1 sits with its pinion 3 on one Shaft 5, which, like the creative wheel shaft 6 of the Scoop wheel 4 in the front board 7 freely rotatable is. The rear plate of the clockwork is not shown.

The pin impeller 1 is eccentric to the shaft arranged and directed against the circuit board 7 trigger pin 2 provided with a locking tongue 8 one Release lever 9 cooperates. The locking tongue 8 forms that is bent at right angles and through a slot opening 10 of the board 7 inwardly projecting end. of the release lever 9. The release lever 9 is on the front of the Board 7 on a fixed bearing pin 11 pivotable stored, and it is with an obliquely downward facing Provide feeler lever 12. This feeler lever 12 has a stylus 13 on one with the feeler lever 12th connected leaf spring 14 axially movably attached and is provided at the end with an inclined surface 15 (FIG. 2 and 4).

This in FIGS. 2 and 4 in its normal or rest position Stylus 13 shown protrudes into the rotational movement range one stuck on the minute wave 16 immediately trigger cam arranged outside the circuit board 7 17, which can be seen from FIGS. 7 and 8, two Release fingers 18 and 19, which are diametrically i.e. offset from each other by 180 °, which but have different radial heights. The trigger finger 18 with the lower radial height is used for Trigger the half-hour strikes, while the radially higher Trigger finger 19 triggers the hourly strikes.

By a near the locking tongue 8 on the release lever 9 attached weight 20 is the stylus 13 of the feeler lever 12 pressed radially against the release cam 17.

The hour tube 25 is rotatable on the minute shaft 16 stored that with the hour wheel 26 and the hour scale 27 is provided, both rotatably with each other and are connected to the hour tube 25.

The hour wheel 26 stands over a pinion 30 and a rotationally fixed connected to this gear 28 with the minute pinion 29 in the usual way with a reduction of 12: 1 engaged.

Season 27 with its twelve hour strikes one to twelve assigned radial stages is scanned from a feeler lever 31 of a falling rake 32, the freely pivotable on a fixed journal 33 the Board 7 is stored. The feeler lever 31 is similar to the feeler lever 12 is provided with a feeler pin 35 which a leaf spring 36 connected to the feeler lever 12 is and axially movable through a slot opening 37 of the lever 31 in the rotating plane of the hourly scale 27 protrudes. This stylus 35 is also at its free End provided with an inclined surface 38, which is normally when setting the hands or the movement to one certain time in the forward direction with a Sloping surface 39 of the season 27 interact and the axial deflection of the stylus 35 can cause.

If the is between the highest radial level and the lowest radial level N of the season 27 extending Sloping surface 39 in the forward direction of rotation of the arrow 40 rotated against the inclined surface 38 of the stylus 35 is, there is an axial deflection of the stylus 35 in the manner shown in Fig. 4, so that the stylus 35 with its end directed towards the circuit board 7 lifted onto the outer end face 41 of the hourly scale 27 becomes.

The falling rake 32 is one with its pivot axis of the bearing pin 33 provided concentric toothing 34, which has at least twelve tooth gaps.

Around this drop rake 32 from its dropped position to swing back to its starting position is open a bearing journal protruding from the front of the board 7 45 of the creator wheel shaft 6 essentially oval creator disk 46 attached, which is an eccentric Scoop pin 47 and a radial stop shoulder 48 has. On the stop shoulder 48 diametrically opposite side is the scoop 46 with a lifting cam 49 provided with a lifting pin 50 a drop lever 51 cooperates. This drop lever 51 is above the release lever 9 on a fixed bearing journal 53 of the board 7 pivotally mounted. He owns except for the lifting pin 50 one on the top the release lever 9 resting support pin 52, and on End of an arcuate section 51 ', in which the lifting pin 50 is arranged approximately in the middle, the drop lever 51 a locking pin 53 on during an hourly strike alternately with the creator pin 47 in the toothing 34 of the rake 32 engages. Through the lifting cam 49 of the creator disk 46 becomes the drop lever 51 lifted out of the toothing 54 with its locking pin 53, while the scraper pin 47 around the drop rake 32 a tooth pitch of the toothing 54 moves upwards.

If by the counterclockwise direction Rotary movement of the scoop disk 46 during one hour strike the fall rake 32 gradually into its upper Starting position is pivoted back takes place simultaneously a corresponding pivoting of the stylus 35 with the feeler lever 31 around the trunnion 33 in the clockwise direction of rotation. This gradual raising of the case rake 32 continues until the locking pin 53 in front of the radial shoulder 54 of the rake 32 falls and the lifting pin 50 in the range of rotation of the stop shoulder 48 falls. As soon as this stop shoulder 48 of the scoop 36 runs against this lifting pin 50, it will Impact mechanism stopped. The stroke execution is then ended until it is triggered again. This triggering is done by lifting the Release lever 9, if this from one of the release fingers 18 or 19 of the half-hour cam 17 for temporary Release of the gear train of the striking mechanism pivoted becomes. This is called the temporary release of the gear train the warning".

By the radially lower trigger finger 18 of the trigger cam 17, the trigger lever 19 and the drop lever 51 only raised so far that the lifting pin 50 releases the stop shoulder 48 of the scraper 46, so that after the stylus 13 falls off the Tip of the trigger finger 18 only one full turn can run until she hits her shoulder 48 again is in locking contact with the lifting pin 50. During this one time Rotation of the scoop disk 46 is one Half hour strike executed. The locking tongue 8 of the Release lever 9 is again out of the movement path of the trigger pin 2 fell down.

By contrast, due to the radially higher trigger finger 19 the release lever 9 and with this via the support pin 52 the drop lever 51 is raised so far that the locking pin 53rd of the drop lever 51 free the fall rake 32 to fall off ' gives. The stylus 35 of the feeler lever then also falls 31 to a time corresponding to the current time Radial level of the hourly scale 27. If thereafter at Reaching the hour of the stylus 13 of the feeler lever 12 radially from the tip 19 'of the trigger finger 19 drops, the striking mechanism is used to execute the Hourly rate 27 certain number of hourly strikes released until the falling rake returns to its upper starting position returns and the lift pin 50 of the drop lever 51 again in front of the stop shoulder 48 of the scraper 46 has fallen and the creator disk 46 is stopped again by the lifting pin 50.

With the help of a hammer mechanism shutdown device described in more detail below 60 it is possible to run the percussion during a certain, daily to prevent repetitive time period. This period of time can be between 10 p.m. and 7 a.m. lie so that the clockwork strikes during this night time do not bother. About this hammer mechanism switch-off device 60 belongs to a locking disk 58 with a radial Direction increased locking cam'59, the circumferential length at one turn of the lock washer 58 in twenty four Hours corresponds to a period of approximately nine hours.

This locking disk 58 is rotatable on a front Fixed bearing pin 63 of the board 7 rotatably mounted and provided with a gear 64 which has a pinion 65 of a gear 66 is engaged. The gear 66 is in turn with the pinion 30 of the pointer gear engaged. The locking disk 58 is a Assigned to lever 67, which is freely pivotable on a is fixed bearing journal 68 of the board 7 and with a stylus 69 loosely on the circumference of the locking disk 58 rests.

The pivot 68 can also be freely pivoted, i.e. independently a locking lever 62 is supported by the feeler lever 67, the approximately horizontal locking arm 61 with a about the same length, obliquely downward lower Section 62 'forms an obtuse angle. The locking arm 61 can be a cross pin 70 of the release lever 9 lift the connected lever 12.

To between the feeler lever 67 on the one hand and the locking lever 62 on the other hand to establish a detachable connection, a clutch lever 71 is provided which has a clutch arm 72 and one that runs approximately at right angles to it Switch arm 73 has. At the common end of the Switch arm 73 and the clutch arm 72 is by means of a Hinge pin 74 in a corresponding hole on upper end of the lower portion 62 'of the locking lever 62 the clutch lever 71 is pivotally mounted. About that in addition, the lower portion 62 'of the lock lever 62 through a pin-slot connection 75/76, which is used for limitation the pivot angle of the clutch lever 71 relative serves to the locking lever 62, connected to the clutch lever 71.

The pin 75 is fixed in the locking lever 62 and the arcuate slot 76 in a die two arms 72 and 73 connecting sector of the clutch lever 71 arranged. The clutch arm 72 is nearby its lower, opposite the pivot pin 74 End a support shoulder 77, which is on the inside an inclined leading edge 79 connects. On the Hinge pin 74 is between the locking lever 62 and the Clutch lever 71 has a leg spring 81 arranged each with a spring leg on the lower section 62 'of the locking lever 62 and supported on the coupling arm 72 in such a way that they have a torque on these two parts exercises through which the coupling arm 72 about the bearing axis of the pivot pin 74 against the bearing pin 68 is pressed or which endeavors, the acute angle between the coupling arm 72 and the section 62 ' out.

In the normal position of the clutch lever 71 the support shoulder 77 engages with one from one Pen existing support element 82 of the feeler lever 67, such as which is shown in Figs. 1, 7 and 8. This form-fitting Connection between the coupling arm 72 of the Clutch lever 71 and the feeler lever 67 is from the Leg spring 81 maintained. It is from the graphic representations recognizable that the feeler lever. 67, the coupling arm 72 and the lower portion 62 'of Locking lever 62 form a triangle, the corners of which from the pivot pin 74, from the journal 68 and from the support element 82 are formed, and which overall around the journal 68 is pivotable.

To by the clutch lever 71 or its clutch arm 72 existing connection between the feeler lever 67 and to be able to manually release the locking lever 62, so that the locking lever 62 the pivoting movements of the feeler lever 67 can no longer follow, the switching arm 73 of the Clutch lever 71 is a manually operated shift lever 83 assigned. This shift lever 83 is on one in the Board 7 seated shoulder screw 84 pivotally mounted and provided with a switching lug 85, which with a oblique button 86 on a pin 87 of the switching arm 73 can act. This switching lug 85 is on one Actuating arm 88 arranged, the board 7 laterally surmounted. In addition, this shift lever 83 has one Locking arm 89 on the with. a ball catch 97 is provided, through which the shift lever 83 in three different Switch positions I, II and III can be locked in place can.

A diametrically opposite the actuating arm 88 Lever arm 96 is provided with a cross tongue 95 which engages the release lever 9 so that this by the Shift lever 83 are kept permanently in the locked position can.

When the shift lever 83 is as shown in FIGS. 1 and 7 shown in position I is the Impact mechanism shutdown device 60 effective. At the time, in which the locking cam 59 of the locking disc 58 the Lock arm 61 of the locking lever 62 deflects around the bearing journal 68, the trigger lever 9 in a pivot position held in which the trigger pin 2 of the pin impeller 1 rests on the locking tongue 8, as in FIGS. 1 and 7 is shown.

In this locked position of the release lever 9 is also the Drop lever 51 raised so far that the drop rake 32 after fell down.

Assume that the last hour struck at 10 p.m. would take place, the following pivoting of the release lever 9 by the locking cam 59 Probe lever 31 of the fall rake 32 with its stylus 35 once again to the one corresponding to the 10 o'clock hour Radial stage of hourly series 27 fall. Since by Falling of the stylus 69 from the locking cam 59 the gear train of the percussion completely stands still, on the other hand the hour scale 27 with the hour tube 25 for example, rotates nine hours without the Fall rake 32 from its dropped position again is pivoted upwards, the stylus 35 falls between 11 p.m. and midnight to the lowest radial level the hourly schedule 27. Between midnight and 2:00 a.m., the stylus 35 is then shown in FIG. 4 Way axially deflected outward when he slides over the inclined surface 39 of the season 27. But then it is still on a radius, which is the deepest radial stage of the hourly series 27 equivalent.

Would this position of the case rake 32 by the end of the Percussion lock would be maintained in the following First release the striking mechanism 12 hour strikes occur before the correct 7 hour strikes could be triggered.

To prevent this incorrect hitting, is the Hourly scale with one on the side in the sensing range of the axially deflected stylus 35 arranged lifting curve 90 provided, which differ from the lowest radial stage N the hour scale 27 to the radial stage E of those Hours strikes, from which the locking disc 58 of the shutdown device 60, the function of the slide hammer releases again. The one in the drawing illustrated embodiment is shown by this lifting curve 90 the stylus 35 of the stylus 31 on the'der Hourly beat number seven corresponding radial level E raised, so that at around 6:30 a.m. and 6:50 a.m. Removal of the striking mechanism lock of the falling rakes 32 occupies position E, which he also occupy would if the striking mechanism lock did not take place would have.

The lifting curve 90 is formed by a peripheral section a cam disc placed on the hourly scale 27 91. As can best be seen from FIG. 3, runs between the radial stage E and the lowest radial stage N extending peripheral portion 93 of the cam 91 radially within the range between E and N. Radial steps that strike the hours eight to eleven correspond.

The length and radial height of the lifting curve 90 are determined each after the end point of the locking cam 59 on the locking disk 58. Is this end point in time the locking cam 59 only at 8 a.m., it is necessary the stylus 35 only by the lifting curve 90 to the radially lower radial step to E, which corresponds to the 8 hour strike. Would, however the end point of locking cam 59 before 6 a.m. lie, the lifting curve 90 should be designed that the stylus 35 in time from this to the radial stage before E, which is the hourly strike of 7:00 a.m.

As already described, a half-hourly striking mechanism also a half-hour strike every half hour triggered. This is done by the shorter trigger finger 18 of the half-hour cam 17. For half-hour works without striking mechanism shutdown Raise and fall off the release lever 9 for the Half-hour strike exclusively by the trigger finger 18, the half-hour cam that rotates once per hour 17th

Because the locking disc 58 of the hammer mechanism switch-off device 60, however, only once in twenty-four hours turns, it is not with normal manufacturing tolerances possible, the release lever falling off. 9 and with that Release the striking mechanism for the following hours or Set the half hour strike so precisely that incorrect beating is avoided.

In order to achieve this with simple means, is in the illustrated embodiment of the hourly strikes triggering trigger fingers 19 of the trigger cam 17 provided with an elongated back 21 which extends over an angle α of at least 45 ° and at most 70 ° extends the radius R of the cam tip 19 '. This will ensures that even if the feeler lever 67 or whose stylus 69 from the locking cam 59 at the end of Impact lock drops, which falls due on the next full hour Hourly strike is not triggered too early.

One can see, for example, in Fig. 8 that the locking tongue 8 of the release lever 9 still in the circular path of the Trigger pin 2 of the pin impeller 1 is held because the, stylus 35 of the feeler lever 12, which is integral with the trigger lever 9 is connected to the extended Back 21 of the trigger finger 19 falls, even if the Lock arm 61 the cross pin 70 of the feeler lever 12 already further waste 'has released. The following hourly strike can therefore only be triggered when the Tip 19 'of the trigger finger 19 in the clockwise direction of rotation has passed under the stylus 35 and thus that The release lever 9 drops as with every normal hourly strike allows. With this release of the release lever 9 will then also trigger pin 2 of the pin impeller 3 free, so that the gear train of the striking mechanism in motion can be set.

If after lifting the striking mechanism lock first on Half hour strike, it is necessary in an analogous manner to triggering the half-hour strikes responsible trigger finger 18 with one on the radius elongated back at its tip Mistake.

When, as shown in FIG. 5, the shift lever 83 is pivoted into position II, in which he is due the ball catch 90 remains, so presses the button 86 of the switching lug 85, the switching arm 73 of the clutch lever 71 so far down that the clutch lever 71 counter to a pivoting movement about its pivot pin 74 Clockwise rotation. This will get the Coupling arm 72 out of engagement with support member 82 of the feeler lever 67. The connection between the feeler lever 67 and the locking lever 62 is released. The movements the key lever 67 are therefore no longer on the Transfer locking lever 62. This means that the hammer mechanism switch-off device 60 is turned off and that Percussion works normally. This turning off the Impact switch 60 can be any Time, so take place even when the feeler lever 67 in its pivoted out by the switching cam 59 Location is and the stylus 69 on the locking cam 59 rests.

By pivoting the shift lever 83 out of position II in FIG. 5 in position III in FIG. 6, the trigger lever 9 by the one below it Cross tongue 95 of the lever arm 96 of the shift lever 83 so far ' pivoted upwards that the locking tongue 8 of the Release lever 9 in the rotation circle of the release pin 2 the pin impeller 1 and thus the striking mechanism completely locks.

Claims (4)

1. Striking clock with a rack-type striking mechanism and with a disconnecting device for partial disconnection of the rack-type striking mechanism, the falling rack of which falls with an axially resiliently deflectable feeler of a contact arm on an hour rung and can be set in motion by a trip lever actuated by a trip cam of the minute shaft, in which the disconnecting device has a latching disc which is driven by the clock mechanism, rotates once in 24 hours and is provided with a sector-shaped latching cam and is swept by a contact lever interacting via a latching lever with the trip lever alternately blocking and releasing the going parts of the striking mechanism, characterised in that the hour rung (27) is provided with a lifting curve (90) arranged laterally in the contact region of the axially deflected feeler (35), the curve (90) extending from the lowest radial step (N) of the hour rung (27) to the radial step (E) of the hour striking mechanism from which point the latching disc (58) of the disconnecting device (60) releases the function of the rack-type striking mechanism.
2. Striking mechanism according to claim 1, characterised in that the lifting curve (90) is formed by a peripheral portion of a cam disc (91) placed on the hour rung (27).
3. Striking mechanism according to claim 1 or 2, characterised in that a trip finger (19) of the trip cam (17) connected to the minute shaft (16) has an elongated back (21) holding the trip lever (9) in the latching position and extending from the tip (19') of the trip finger (19) on the radius thereof and in the direction of rotation thereof.
4. Striking mechanism according to claim 3, characterised in that the elongated back (21) of the trip cam extends from the tip (19') of the trip finger (19) via an angle (α) of at least 45° and a maximum of 70°.

Images