DE2707862A1 - Decorative pendulum assembly for clock - includes balls carried by radial arms extending from cylinder over pendulum shaft - Google Patents

Abstract

The 400 day clock has a decorative ball pendulum mechanism with a vertical pendulum shaft (11), acted on by a concentric spiral return spring (17). A drive element of the clock movement exerts a torsion moment on the spiral spring (17), which transmits a drive pulse to the pendulum shaft (11), causing it to rotate through a given angle. The equi-spaced balls are each formed as two shell halves (26, 27) and carried by a radial arm (25) extending from a cylinder n20) fitted over the pendulum shaft (11). This cylinder (20) has three sections comprising an upper section (21), a central section (22) of larger diameter from which the arms (25) extend and a lower conical section (23). The cylinder (20), the arms (25) and the bottom half (16) of each ball are formed as an integral plastics injection moulding.

Description

Additional patent registration

Rotary pendulum (addition to P 25 37 872.7, from August 26, 1975) The invention relates to a rotary pendulum, in particular for non-permanent purposes, for use as a jewelry and ornamental pendulum, preferably to equip a so-called annual or 400-day clock, which is used for the actual rate control with a gear folder, e.g. a balance or a crystal control circuit is provided with a rigid, in a lower radial and support bearing and an upper radial bearing guided rigid Pendulum rod, made up of a free, concentric, numerous individual turns existing, the restoring force generating coil spring is surrounded, which one Compared to the diameter of the pendulum rod, the outer diameter is only slightly larger has and which rod with one end down on the pendulum and with the other end is attached to the top of the radial bearing and dimensioned so that it is on the rotary pendulum in addition, an upward pulling effect in the axial direction of the pendulum rod exercises so that an almost complete discharge of the support bearing occurs, and a sleeve-like spring on the helical spring in its upper region Transmission member is arranged, which is connected by a drive part with the clockwork is and under the action of a drive element of the clockwork a torsional moment transmits to the helical spring and thus a drive pulse to the rotary pendulum, according to patent application P 25 37 872.7, dated 26.o8.75.

The invention has a development of the arrangement according to this main patent application to the subject. This training primarily serves to simplify and make it cheaper the arrangement according to the main patent application.

When the subject of the main patent application is used to train the so-called "crown" of the rotary pendulum, with which the crown-like rotating mass of the rotary pendulum is meant, four so-called ball carriers (25) are used on their outer ends of the spherical body (29) placed on lugs (30) and threaded through a thread (31) of the latter screw-on decorative nut (32) are fixed. Four such ball carriers (25) with spherical body (29) and decorative nut (32) are attached to the rotary pendulum Pendulum crosses (23, 24) suspended or held.

The coil spring (17) of the rotary pendulum is in the object after Main patent application twisted down onto the fine thread (16) of a threaded bushing (13), which is firmly connected to the pendulum rod (11). The so-called pendulum crown exists thus from a plurality of individual parts, which in several assembly processes are summarized and assembled. For this purpose, reference is made to FIG. 1 of the main patent application P 25 37 872.7 referenced.

Such a construction of the rotary pendulum is easy to assemble, however the multiple parts mean a not inconsiderable expense. For large, with their spherical carriers sweeping pendulums that have a high moment of inertia have and thus vibrate slowly, these increased costs for the rotary pendulum fall not very important, since watches equipped with them are only available in relatively smaller ones Manufactured in numbers and usually provided with expensive housings, so that the cost share of the rotary pendulum is not that significant. In addition, the in the arrangement of the pendulum crown described in the main patent application the possibility of by using differently shaped ball carriers also differently shaped To assemble rotary pendulum and so starting from essentially the same components to get to the variously designed pendeikronen.

This is useful because the differently designed housing also require variations of the rotary pendulum design. The here to be recorded, not very large quantities let the advantages of by exchanging the so-called Ball carrier (25) achievable variation in the aesthetic shape of the so-called Pendulum crown compared to the disadvantages associated with such an arrangement, namely the higher cost, stand out clearly.

However, this only applies to relatively small numbers of pieces manufactured large rotary pendulum for large annual resp.

4co-day clocks too, for small ones, manufactured in large numbers The structure of the so-called pendulum crown is, however, too complicated and too expensive.

The lower end of the pendulum bolt (2c) has a taper (33) the bearing needle (34), which is guided in a neck and support bearing (35, 36). These However, the arrangement is easily exposed to soiling, and it can only be proportionate difficult to provide with a shock absorbing device. That kind of storage also means a certain loss of space for the base supporting the clock, da the height of which is increased to a certain extent. This is especially true when smaller rotary pendulum clocks are a disadvantage.

The invention has for its object the arrangement of the rotary pendulum according to the main patent application to simplify, improve and cheaper too design.

The invention solves the problem in that the crown of the Rotary pendulum has an elongated, concentric socket part in which the top the pendulum rod is used that on the elongated, concentric socket part radial Webs are formed, on which outside open, semi-spherical shells are attached, corresponding cover parts are placed on the open spherical shells, and wherein the elongated, concentric socket part together with the webs and the open half-ball shells are manufactured as one part using a plastic injection molding process.

An embodiment of the invention is seen in the fact that the elongated, concentric socket part has a neck surrounding the pendulum rod at the top, which is surrounded by turns of the helical spring, which is on by a clamping ring this approach are secured.

Another embodiment of the invention is seen in the fact that the the screw spring holding the top and leading the pendulum rod in a radial bearing at the top Bearing pin with its cylindrical part in a fixed, made of plastic injected Retaining piece is adjustable with friction.

Another further embodiment of the invention is that the elongated, concentric socket part of the rotating pendulum at its lower end a Bore carries, in which a support bearing forming a cylindrical part and a the bush forming the neck bearing are used.

The invention is illustrated in the accompanying drawings and explained in the following description.

It shows: Fig. 1 the rotary pendulum according to the invention, together with the support part for the threaded bolt for the upper radial bearing and the helical spring and with the schematically indicated drive device of the clockwork.

Fig. 2 shows a detail of the support part.

3 shows a detail of the lower support and radial bearing.

4 shows a detail of the rotary pendulum.

FIG. 5 shows the rotary pendulum arrangement according to FIG. 1 in a different arrangement.

In Fig. 1, a support plate 1 is indicated at the top of the pendulum, which either directly in the form of a bracket on the clockwork or on one of these supporting holding part of the clock is arranged. The carrier plate 1 has, as shown in Fig. 2 can be removed, a slot 3 which opens into a bore 4, which is used for receiving a threaded bolt 2 is used. The carrier part 1 is made of plastic, see above that the fork formed by the slot 3 and the bore 4 at the end of the support part 1 has a resilient effect. In the opening 4 of the support part 1 is through the slot 3 a threaded bolt 2 with its cylindrical part 5 collapsible. The contact pressure on the cylindrical part 5 of the threaded bolt 2 is such that with Friction an adjustment of the latter at its hexagon 7 by means of a suitable Tool is possible. The bursting of the cylindrical part 2 into the fork 3, 4 of the support part 1 takes place between the shoulder 6 and the hexagon 7.

Below the hexagon 7 on the threaded bolt 2 is an extension 8 provided, which carries a fine thread 9 corresponding to the usual standard.

In the extension 8 a bore is provided, which is one of the radial bearings of the journal 12 serving, preferably made of plastic bush 1o. The socket lo can, however, also be made of another suitable material, for example consist of a synthetic ruby or the like.

The rotary pendulum according to the invention initially consists of the pendulum rod 11, which is connected to bearing journals 12 guided radially in the socket lo above and which protrudes below into an approach which passes through the hexagon 14 of the upper socket part 21 of the socket part 20 is formed.

Between the extension 8 of the threaded bolt 2 and the hexagon 14 the coil spring 17 consisting of numerous turns is arranged, the above with their end turns 18 twisted onto the fine thread 6 of the threaded bolt 2 and below with their end turns 19 on the hexagon 14 of the upper socket part 21 are secured by a clamping ring 16.

This clamping ring 16 can consist of a slotted tube, which is pressed on via the end turns 19 wound around the hexagon 14.

The diameter of the coil spring 17 is chosen so that this with its inner radius surrounds the outer diameter of the pendulum rod 11 loosely concentrically, so that between pendulum rod and coil spring 17 there remains a game which is straight a safe free twist and end turn of the helical spring 17 is still guaranteed, without this touching the pendulum rod 11.

The pendulum crown or the pendulum base, i.e. the inertial mass the rotary pendulum is now once formed by a socket 20, which consists of a cylindrical upper socket part 21, a middle socket part 22 and a conical one lower Socket part 23 is formed. The middle socket part 22 is designed as an inside hollow and open at the bottom, from which the lower Socket part 23 protrudes. The middle (22) and lower (23) socket parts have radial formed from the center of the pendulum extending webs 25, which are molded on their free lower ends 24 open ball shells 26 wear. In the illustrated embodiment four webs 25 and thus four spherical shells 26 are provided.

Corresponding other configurations are of course also possible possible. For example, 6 webs 25 with 6 spherical shells 26 can also be used.

The socket parts 21, 22 and 23 of the socket 2c, radial webs 25 and Ball shells 26 together form a part, the whole in the plastic injection molding process is made.

The pendulum rod 11 is expediently included in the part during the injection molding process (20; 21) injected.

Corresponding cover parts 27 are placed on the open spherical shells 26 put on so that both parts complement each other, e.g. by gluing, to form a solid ball. Here, the cover parts 27, which are also designed as spherical shells, are provided with a Approach 28 equipped, through which the former in the connected to the radial webs 25 Ball shells an adjustment bzk. Experience alignment. Inside the spherical shells 26, 27 projections 29, 3c are formed which protrude into one another when the parts are assembled and either for easier and cleaner gluing both spherical shells 26, 27 or but serve to hold both parts by both lugs 29, 20 by a press fit are plugged into each other.

After assembling the spherical shells, the pendulum crown is in a vacuum in a suitable manner, e.g. vapor-deposited with gold.

The lower socket part 23 of the socket 20 has at its lower end a taper 33 into which the radial and support bearings 36, 39 of the rotary pendulum are arranged.

This detail is illustrated in FIG. 3.

In a bore 35 of the taper 33 of the lower socket part 23 is a radial or neck bearing for the pivot pin fixed in the base of the base 34 forming bush 36 pressed in. This socket 36 preferably consists of one suitable plastic or other suitable storage material, e.g. synthetic Ruby. The socket 36 partially closes another, the bore 35 of the taper 33 continuing bore 37 in which a coil spring 38 and a support bearing of the pendulum on the fixedly arranged bearing pin 34 forming the cylinder part 39 are introduced. The cylinder part 39 is preferably made of hard steel or any other suitable material, e.g. synthetic ruby.

The cylinder part 39 is in the bore by the coil spring 38 37 pressed against the bush 36 pressed into the bore 35.

The bearing pin 34 is pressed into a bush 32, which in turn is riveted in the bottom of the housing base 31.

The rotary pendulum is so down on the housing base 31 by means of the Bearing pin 34 and the bush 36 radially and supported by the cylinder part 39. The axial force of the axially stressed coil spring 38 is designed so that this is greater than the effective dead weight of the rotary pendulum.

If the rotary pendulum experiences an impact from the outside, e.g.

due to improper handling, e.g. improper hard placement the clock, the shock impulse imparted to the rotary pendulum is counteracted by the the pressure of the helical spring 38 in the bore 37 yielding cylinder part 39 partially caught while the taper 33 with its end face on the socket 32 touches the housing base 31. This completely intercepts the shock pulse and breakage of the bearing pin 34 or the hard cylinder part 39 is avoided.

The transmission element 40 is arranged on the helical spring 17, which is expediently made of plastic and the side is designed as a needle Drive part 41 carries.

The part 41 is expediently attached to the transmission member 40 in a plastic injection molding process molded with.

In Fig. 4, the transmission member 40 is in a plan view and in shown enlarged. An opening 43 closes on an inner bore 42 on, the recesses 44, the one-sided weakening of the cross section of the transmission member 4c serve, opposite one another. Bores 45 are used to accommodate the transmission link 4c in a tool, e.g.

in an expanding pliers, whereby the transmission member 4c in its breakthrough 43 can be expanded so that the part 40 is placed onto the helical spring 17 from the outside can be jammed there by the profile tension of its own cross-section.

The drive part 41 of the transmission member 40 protrudes into the clockwork and is there by a drive member, e.g. by a fork or a rotating The cam disk is intermittently applied and migrates together with the rotary oscillation movement of the pendulum back and forth in the area of this drive member. Nacr2aem in Fig. 1 and 5, the drive part 41 protrudes through a slot 51 of a plate 52 of the movement So. A cam disk 53 is via a socket 54 connected to a wheel 55 and to the shaft 56. The seesaw is on shaft 56 60 freely pivotable; this consists of the shaft 58, the web 59 and the Weight 57. The wheel is mounted on a shaft 61, which is fastened in the web 59 62 and the pinion 63. Both are connected to one another and free on the shaft 61 rotatable.

Under the weight of the rocker 60, the pinion 63 meshes with a wheel 64 of the clockwork So, preferably the fourth wheel.

Wheel 62 constantly meshes with wheel 55. When the rocker swings out 60 against the action of the weight 57, the engagement between the wheel is released 64 and the pinion 63.

The wheel 64, which is preferably designed as a second wheel, is either from an electro-dynamically charged balance or from a stepper motor, which can be controlled by a quartz, for example. This drive movement is from the wheel 64 to the pinion 63, whereby the wheel 62 connected to this on the wheel 55 and thus transferred to the cam disk 53. The cam plate 53 becomes driven intermittently and acted upon the drive part 41 with their cams such that a continuously sustained oscillating movement of the rotary pendulum can be achieved will. The drive part 41 is acted upon via the transmission element 40 on the coil spring 17 and transferred from this to the pendulum as such and leads to the deflection of the pendulum, around its oscillation o-point and to the continuous Maintenance of the vibratory movement.

For a safe drive of the rotary pendulum, it is necessary that the cam disk 53 has a higher angular velocity than the oscillatory movements of the rotary pendulum and thus the speed of the drive part 41 corresponds. Through this is a rotational movement compensation necessary or

expedient, which can be reached by the pivotable rocker 60. If a cam of the cam disk 53 acts on the drive part 41, it is formed due to the higher angular velocity of the former, a torque jam, the via the engagement between wheel 64 and pinion 63 to pivot the rocker 60 and so to a temporary penalty of the intervention and thus a decoupling of the two engagement members leads.

The elongation force of the coil spring 17 is now so on Pendulum weight matched that the support bearing consisting of parts 34 and 39 is largely relieved. The remaining supporting force on the support bearing 34, 39 is expediently chosen so large that the twisting of the helical spring 17 Occasionally the turning movements of the pendulum increase the axial The elongation force is not sufficient to lift the pendulum from this support bearing, i.e. that the support of the rotary pendulum on the pivot pin 34 is securely maintained.

The hexagon 7 of the threaded bolt 2 is used to set the rest position of the transmission member 40 relative to the clockwork (1). This setting is after completed assembly of the pendulum on the clockwork and makes it possible that the Drive part 41 to the acting drive member of the clockwork a certain, assumes optimal rest position when the pendulum is not deflected.

The arrangement according to the invention also allows a simplified surface treatment the pendulum crown. The assembled crown, i.e. socket 2c, webs 25, spherical cups 26 on the one hand and cover parts 27 on the other hand are assembled and without inserted support and radial bearings 36, 38, 39 vapor-deposited with a very thin gold layer in a vacuum. This surface treatment is corrosion-resistant, color-identical and also requires no additional varnishing of the surface with a crystal clear varnish, e.g. zapon varnish Etc.

The rotary pendulum arrangement according to the invention has a number of advantages result. Reduced the number of mounting hardware required for the pendulum crown and there are fewer tools for their production and therefore fewer Operations required. The surface treatment of the crown is relatively simple and enables a color-identical imitation of precious metals.

The storage of the rotary pendulum according to the invention is improved and less sensitive. The bracket of the upper bearing and the coil spring suspension representing threaded bolt is simplified and facilitated its adjustment.

- patent claims - L e r s e i t e

Claims (7)

Patent claims 1, rotary pendulum, in particular for non-time-determining Purposes for use as a jewelry and ornamental pendulum, preferably for fitting a so-called annual or 400-day clock, which is used to control the actual rate equipped with a gear folder, e.g. a balance wheel or a quartz control circuit is, with a rigid one, in a lower radial and support bearing and an upper one Rigid pendulum rod guided by radial bearings, supported by a free, concentric, consisting of numerous individual windings, the restoring force generating helical spring is surrounded, which compared to the diameter of the pendulum rod only a little has a larger outer diameter and which rod with one end at the bottom of the pendulum and with the other end attached to the top of the radial bearing and dimensioned in this way is that they also have an upward pulling action on the rotary pendulum exerts in the axial direction of the pendulum rod, so that an almost complete relief of the support bearing occurs and on the helical spring in its upper area a sleeve-like transmission member is arranged, that by a Drive part is connected to the clockwork and acted upon by a drive element of the clockwork a torsional moment on the coil spring and thus a drive impulse transmits to the rotary pendulum, according to patent application P 25 37 872.7 thereby characterized in that the crown of the rotary pendulum has an elongated, concentric socket (20; 21, 22, 23), in which at the top (21) the pendulum rod (11) is inserted, that on the elongated, concentric socket (20; 21, 22, 23) radial webs (25) are formed are, to which the outside (27) open, half spherical shells (26) are attached, wherein corresponding cover parts (27) are placed on the open spherical shells (26), and wherein the elongated, concentric sleeve (20; 21, 22, 23) together with the Bars (25) and open half spherical shells (26) as one part in the plastic injection molding process are made. 2. Rotary pendulum according to claim 1, characterized in that the elongated, concentric socket (20; 21, 22, 23) above (21) a pendulum rod (11) has surrounding approach (14) that of turns (19) of the helical spring (17) is surrounded, which are secured by a clamping ring (16) on the shoulder 04). 3. Rotary pendulum according to claim 1 and 2, characterized in that that the one holding the helical spring (17) at the top and the pendulum rod (11) at the top (12) leading threaded bolt (2) with its cylindrical part (5) in a fixed, Plastic injection-molded retaining piece is adjustable with friction. 4. Rotary pendulum according to claim 1-3, characterized in that the elongated, concentric socket (20; 21, 22, 23) at its lower end (33) a bore (35, 37) carries into which (37) a cylindrical support bearing forming Part (39) and (35) a bushing (36) forming the radial or neck bearing is inserted are. 5. Rotary pendulum according to claim 1 - 4, characterized in that in the case of heavy loads on the rotary pendulum in the direction of the support bearing, the cylindrical one Part (5), which forms the support bearing, in the axial direction opposite to this direction of application and temporarily adjustable and counter to the action of a helical spring (38) that the lower end (33) of the socket (20; 21, 22, 23) on a stop (31, 32) is attachable. 6. Rotary pendulum according to claim 1, characterized in that the surface treatment of the parts forming the crown is done exclusively by gold vapor deposition in a vacuum. 7. Rotary pendulum according to claim 1, characterized in that the each other Hemispherical shells (26, 27) interlocking inside to form a full sphere Approaches (29, 30) which can be connected to one another by a form fit or a force fit are.