DE2707862C2 - Rotary pendulum - Google Patents

Description

The invention relates to a rotary pendulum, in particular for non-time-determining purposes, for use as Ornamental pendulum, preferably to equip a so-called annual or 400-day clock, which for the actual gear control with its own gear folder, z. B. a balance wheel or a crystal control circuit is provided, wherein the rotary pendulum has a pendulum body and a rigid pendulum rod, which is guided in a lower radial and support bearing and an upper radial bearing and from a free one concentric coil spring consisting of numerous individual turns and generating the restoring force is surrounded, which compared to the diameter of the pendulum rod is only slightly larger outside diameter has and which with one end at the bottom of the pendulum rod and with the other end at the top is attached to the radial bearing and which is dimensioned in such a way that it also has a following on the rotary pendulum above reported tensile effect in the axial direction of the pendulum rod, so that an almost complete relief of the support bearing occurs, and with a sleeve-like spring on the helical spring in its upper area Transmission member is arranged, which is connected by a drive part with the clockwork and below Acting by a drive element of the clockwork, a torsional moment on the helical spring and thus a drive pulse is transmitted to the rotary pendulum, according to patent 25 37 872.

The purpose of the invention is to make the application and dissemination of not only pure time measurement, but also prefer to promote the aesthetic lifestyle serving clocks.

The subject of the main patent is used to form the so-called "crown" of the rotary pendulum or the pendulum body, which means the crown-like rotating mass of the rotating pen, four so-called spherical carriers 25 are used, at the outer ends of which spherical bodies are attached to approaches and are fixed by decorative nuts that can be screwed onto the thread of the latter. Four such ball carriers with Spherical bodies and decorative nuts are attached to the rotating pendulum in pendulum crosses attached to it or held.

The coil spring 17 of the rotary pendulum is with the object according to the main patent down on the fine thread 16 of a threaded bushing, which is fixed The so-called pendulum crown is connected to the pendulum rod 11 and thus consists of a plurality of individual elements Parts that are combined and assembled in several assembly processes. This is also done referred to Fig. 1 of the main patent.

Such a structure of the rotary pendulum is easy to assemble, but mean the different items a not inconsiderable cost.

In the case of large rotary pendulums with their spherical carriers that project widely and have a high moment of inertia and somii swing slowly, these increased costs for the rotary pendulum are not as significant as watches equipped with it are only produced in relatively small numbers and mostly with expensive cases so that the cost of the rotary pendulum is not so significant. In addition, the in the arrangement of the pendulum crown described in the main patent the possibility of using different shaped spherical carrier also differently shaped rotary pendulums to be mounted and so starting from to get essentially the same components to the differently designed pendulum crowns.

This is useful because the differently designed housings also vary in the design of the rotary pendulum make necessary. The not very large numbers to be recorded here leave the advantages the aesthetic variations that can be achieved by replacing the so-called spherical supports 25 Shape of the so-called pendulum crown compared to the disadvantages associated with such an arrangement, namely the higher costs, clearly stand out.

However, this only applies to large rotary pendulums manufactured in relatively small numbers for large ones | ahres or 400-day clocks, for smaller and larger ones The number of rotary pendulum clocks produced is the structure of what is known as the pendulum body Pendulum crown, however, too complicated and too expensive.

In the subject of the main patent, the lower end of the pendulum bolt seated at the bottom of the pendulum rod 11 carries in a taper 33, the bearing needle 34, which is guided in a radial and support bearing. This arrangement However, it is easily exposed to soiling, and it can only be relatively difficult to use with a Shock absorption protection can be provided. This type of storage also means a certain amount Loss of space for the base supporting the clock, because it is desiien Height here is increased to a certain extent. This is particularly the case with smaller rotary pendulum clocks disadvantageous.

The invention is based on the task of arranging the rotary pendulum according to the main patent simplify, improve and design cheaper.

The invention solves the problem in that the pendulum crown of the rotary pendulum is elongated, concentric Has socket part into which the pendulum rod is inserted at the top,

that on the elongated concentric socket part radial webs are formed, on which the outside open, half Spherical shells are attached,

that corresponding cover parts are placed on the open spherical shells,

and that the elongated concentric socket part together with the webs and the open half spherical shells is manufactured as a part by plastic injection molding

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

Another embodiment of the invention is also seen in the fact that the coil spring above bearing bolts with its cylindrical part holding the pendulum rod and leading in a radial bearing at the top is sprinkled adjustable with friction in a fixed, injection-molded plastic holding piece.

Finally, a further embodiment of the invention consists in that the elongated concentric socket part at its lower end there is a bore in which a cylindrical part that forms the support bearing and a bush forming the radial bearing are inserted.

The rotary pendulum according to the invention has a number of advantages. The number of for the pendulum crown required assembly parts are reduced and there are fewer tools for their production and thus fewer work steps are required. The surface treatment of the pendulum crown is proportionate simple and enables a color-identical imitation of precious metals.

The mounting of the rotary pendulum according to the invention is improved and less sensitive. The bracket of the the bearing pin representing the upper bearing and the coil spring suspension is simplified and its Adjustment made easier.

The invention is illustrated in the form of an exemplary embodiment in the drawings and in the following Description explained. It shows

F i g. 1 the rotary pendulum according to the invention, together with the support part for the bearing pin for the upper radial bearing and the coil spring and with the schematically indicated drive device of the Clockwork;

F i g. 2 shows a detail of the support part;

F i g. 3 shows a detail of the lower support and radial bearing;

F i g. 4 shows a detail of the rotary pendulum;

F i g. 5 the rotary pendulum according to FIG. 1 in a different view.

In Fig. 1, a support part 1 is as a holding piece at the top indicated on the rotary pendulum, which either directly in the form of a bracket on the clockwork 50 or else is arranged on one of this supporting holding part of the clock. The carrier part 1 has, as shown in FIG. 2 removable is, a slot 3 which opens into an opening 4, which is used to receive a bearing pin 2. The carrier part 1 is made of plastic, so that the fork formed by the slot 3 and the opening 4 at the end of the carrier part 1 has a resilient effect. The opening 4 of the carrier part 1 is through the slot 3

a bearing pin 2 can be snapped in with its cylindrical part 5 therethrough. The contact pressure on the cylindrical Part 5 of the bearing pin 2 is such that an adjustment of the latter at its hexagon 7 is possible with friction is possible by means of a suitable tool. The bursting of the cylindrical part 5 into the fork 3, 4 of the carrier part 1 takes place between the shoulder 6 and the hexagon 7.

Below the hexagon 7 on the bearing pin 2, an extension 8 is provided, which corresponds to the usual standard Fine thread 9 carries

In the extension 8 a bore 13 is provided, which is one of the radial bearings of the journal 12 of the pendulum rod 11, which is preferably made of plastic, has a socket 10.

The socket 10 can, however, be made of another suitable one Material, for example made of a synthetic ruby or the like.

The inventive rotary pendulum consists initially of the pendulum rod 11, on which the above in the Bushing 10 connects radially guided journal 12 and the bottom into one through a hexagon of the top Part 21 of the socket part 20 formed approach 14 protrudes.

Between the extension 8 of the bearing pin 2 and the approach 14 is made up of numerous turns Coil spring 17 arranged, the top with its end turns 18 on the fine thread 9 of the bearing pin 2 twisted and down with their end turns 19 on the approach 14 of the upper part 21 by a Clamping ring 16 are secured. This clamping ring 16 can consist of a slotted tube, which is pressed on via the end turns 19 wound around the extension 14.

The diameter of the helical spring 17 is chosen so that this loosely concentrically surrounds the outer diameter of the pendulum rod 11 with its inner radius, so that between pendulum rod 11 and coil spring 17 a game remains, which is just one safe free twisting and unwinding of the helical spring 17 guaranteed without this doing the Pendulum rod 11 touches

■ The pendulum crown or the pendulum base, d. H. the inertial mass of the rotary pendulum is now through a socket part 20 is formed which consists of a cylindrical upper part 21, a middle part 22 and a conical lower part 23 is formed. The middle part 22 is formed as an internally hollow and open at the bottom can formed, from which the lower part 23 protrudes. The middle and lower part are radially from the center of the pendulum integrally extending webs 25, which at their free lower ends 24 are open spherical 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. So z. B. six Find bridges with six spherical shells use.

The parts 21,22 and 23 of the socket part 20, the radial Web 25 and the spherical shells 26 together form a part, the whole in the plastic injection molding process The pendulum rod is expediently injected during the injection process

On the open spherical shells 26 are appropriate Cover parts 27 placed so that both parts, for. B. by gluing, add to a solid ball. Here, the cover parts 27, which are also designed as spherical shells, are equipped with a shoulder 28 through which the former experience an alignment in the spherical shells connected to the radial webs 25.

Within the spherical shells 26 and the cover parts 27, lugs 29,30 are formed, which when assembled Parts protrude into one another and either for easier and neat gluing or for mounting serve both parts 26,27 in that both lugs 29, 30 can be plugged into one another by a press fit. To After assembling the spherical shells, the pendulum crown is surface-treated in a suitable manner in a vacuum, z. B. vaporized with gold.

The lower part 23 of the socket part 20 has at its lower end a taper 33 in which the radial and support bearings 36,39 of the rotary pendulum are arranged. This detail is shown in FIG. 3 clarifies.

In a bore 35 of the taper 33 of the part 23 is a radial bearing for the in the bottom of the housing base 31 firmly attached bearing pin 34 forming bush 36 pressed in. This preferably consists of a suitable plastic or other suitable storage material, e.g. B. synthetic ruby. the Socket 36 partially closes another bore 37, which continues the bore 35 of the taper 33, in FIG which a coil spring 38 and a support bearing of the rotary pendulum on the fixedly arranged bearing pin 34 forming cylinder part 39 are introduced. The cylinder part 39 is preferably made of hard steel or another suitable material, e.g. B. synthetic ruby.

The cylinder part 39 is pressed by the helical spring 38 in the bore 37 against the one pressed into the bore 35 Bush 36 pressed on.

The bearing pin 34 is pressed into a bushing 32, which in turn rivets into the bottom of the housing base 31 is

The rotary pendulum is thus attached to the bottom of the housing base 31 by means of the bearing pin 34 and the socket 36 radial - and supported by the cylinder part 39. The axial force of the axially stressed helical spring 38 is designed so that it is greater than the effective dead weight of the rotary pendulum. Experienced the rotary pendulum external impact due to improper handling, e.g. B. hard putting on the clock, so the shock impulse imparted to the rotary pendulum is created by the counter pressure of the helical spring 38, the cylinder part 39 escaping into the bore 37 is partially absorbed, while the taper 33 with its face on the arranged on the housing base 31 socket 32. This creates the shock pulse completely intercepted and a breakage of the bearing pin 34 or the hard cylinder part 39 avoided.

On the helical spring 17, the transmission member 40 is arranged, which is expediently made of plastic and that laterally carries the drive part 41 designed as a needle

The drive part 41 is expediently molded onto the transmission member 40 using the plastic injection molding process

In Fig. 4, the transmission member 40 is shown in a plan view and in an enlarged manner Inner bore 42 is followed by a breakthrough 43, the recesses 44, the one-sided weakening of the cross-section of the transmission member serve, opposite one another. Bores 45 are used to accommodate the Transmission member 40 in a tool, e.g. B. in an expanding pliers, whereby the transmission member 40 in its breakthrough 43 can be expanded, so that the part 40 can be placed on the helical spring 17 from the outside

that can and is jammed there by the profile tension of its own cross-section.

The drive member 41 of the transmission member 40 protrudes into the clockwork 50 and is there by a drive member, z. B. acted upon intermittently by a fork or by a rotating cam disk 53 and migrates together with the rotary oscillation movement of the rotary pendulum in the area of this drive member back and forth. According to the one shown in FIGS. 1-5 The application example presented protrudes the drive part 41 through a slot 51 of a plate 52 of the clockwork 50. The cam disk 53 is connected to a wheel 55 and to the shaft 56 via a bushing 54. on a rocker 60 is mounted freely pivotable on the shaft 56; this consists of the shaft 58, the web 59 and the Weight 57.

The wheel 62 and the pinion 63 are mounted on the shaft 61, which is fastened in the web 59. Both are together connected and arranged freely rotatable on the shaft 61.

Under the weight of the rocker 60, the pinion 63 meshes with a wheel 64 of the clockwork 50, preferably the fourth wheel. The wheel 62 constantly meshes with the wheel 55. When the rocker 60 is swiveled out, it counteracts it the action of the weight 57 releases the engagement between the wheel 64 and the pinion 63.

The wheel 64, which is preferably designed as a second wheel, is either electro-dynamic acted upon balance wheel or by a stepper motor that z. B. can be controlled by a quartz, driven. This drive movement is transmitted from the wheel 64 to the pinion 63 and through the wheel 62 connected to it the wheel 55 and thus transferred to the cam disk 53. This is activated intermittently by the balance wheel or the stepping motor driven and acted upon with its cam 53a, the drive part 41 such that a continuously maintained oscillatory movement of the rotary pendulum is achievable. The application of the Drive part 41 is via the transmission member 40 on the helical spring 17 and from this on the rotary pendulum transmitted as such and leads to its deflection around its oscillation zero point and to continuous maintenance of the vibratory movement.

For a reliable drive of the rotary pendulum, it is necessary that the cam disk 53 has a higher Angular velocity has as the oscillatory movements of the rotary pendulum and thus the speed corresponds to the movement of the drive part 41.

As a result, a rotational movement compensation is necessary or expedient, that by the pivotable

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of the cam disk 53, the drive part 41 is formed due to the higher angular velocity of the former a torque build-up which, via the engagement between wheel 64 and pinion 63, leads to pivoting of the Rocker 60 and thus a temporary release of the engagement and thus a decoupling of the two Engaging members 63,64 leads

The axial elongation force of the coil spring 17 is eo now matched to the pendulum weight that the support bearing consisting of parts 34 and 39 largely The remaining supporting force on the support bearing 34,39 is expediently chosen so large that the enlargement resulting from the twisting of the helical spring 17 as a result of the rotary movements of the pendulum the axial elongation force is not sufficient to lift the rotary pendulum from this support bearing, d. H. that the support of the rotary pendulum on the bearing pin 34 is safely preserved.

The hexagon 7 of the bearing pin 2 is used to set the rest position of the transmission member 40 relative to the cam disk 53 of the clockwork 50. This setting is after the assembly of the rotary pendulum made and enables the drive part 41 to act on the drive member 53 of the clockwork assumes a certain optimal rest position when the rotary pendulum is not deflected.

The arrangement according to the invention also allows a simplified surface treatment of the pendulum crown. The mounted pendulum crown, d. H. Socket part 20; 21-23, webs 25, spherical shells 26 on the one hand and cover parts 27 on the other hand, are assembled and without inserted support and radial bearing parts 36, 38, 39 in a vacuum a very thin layer of gold. This surface treatment is corrosion-resistant, color-identical and also does not require any additional painting of the surface with a crystal clear lacquer, e.g. B. Zaponlack Etc.

For this purpose 3 sheets of drawings

Claims (8)

Patent claims: 1. Rotary pendulum, in particular for non-time-determining purposes, for use as jewelry and Ornamental pendulum, preferably for equipping a so-called annual or 400-day clock, which is used for actual gear control with its own gear folder, e.g. B. a balance wheel or a crystal control circuit is provided, wherein the rotary pendulum has a pendulum body and a rigid pendulum rod has, which is guided in a lower radial and support bearing and an upper radial bearing, and from a free concentric, consisting of numerous individual windings, the restoring force generating helical spring is surrounded, which is a compared to the diameter of the pendulum rod has only a slightly larger outer diameter and which with one end at the bottom of the pendulum rod and is attached to the top of the radial bearing with the other end and is dimensioned such that soft they also have an upward pulling effect on the rotary pendulum in the axial direction of the pendulum rod exercises, so that an almost complete relief of the support bearing occurs, and where on the Helical spring in the upper region of which a sleeve-like transmission member is arranged, which through a drive part is connected to the clockwork and acted upon by a drive member of the Clockwork a torsional moment on the coil spring and thus a drive pulse on the rotary pendulum transmitted, according to patent 26 37 872, d a characterized in that the pendulum body an elongated, concentric socket part (20; 21-23) in which the pendulum rod at the top (21) (11) is inserted that on the elongated concentric socket part (20; 21-23) radial webs (25) are formed, on which the outside (24) open, half spherical shells (26) are attached that on the open Ball shells (26) corresponding cover parts (27) are placed, and that the elongated concentric Socket part (20; 21-23) together with the webs (25) and the open half spherical shells (26) as one Part is made by plastic injection molding. 2. Rotary pendulum according to claim 1, characterized in that the elongated, concentric Socket part (20; 21-23) at the top (21) has a shoulder (14) surrounding the pendulum rod (11) which is from Coils (19) of the helical spring (17) is surrounded by a clamping ring (16) on the extension (14) are secured. 3. Rotary pendulum according to claim 1 and 2, characterized in that the, the helical spring (17) top holding and the pendulum rod (11) leading bearing pin (2) with its cylindrical Part (5) sprung into a fixed, plastic injection-molded holding piece (1) adjustable with friction is. 4. Rotary pendulum according to claim 1, characterized in that that the elongated, concentric socket part (20; 21-23) at its lower end (33) has a bore (35,37) in which (37) a cylinder part (39) and (35) forming the support bearing the bushing (36) forming the radial bearing are inserted. 5. Rotary pendulum according to claim 4, characterized in that the cylinder part (39) which the Support bearing (34, 39) forms, as - in the case of strong loads acting in the direction of the support bearing (34, 39) - In the axial direction against the direction of application and against the effect of a Helical spring (38) is temporarily adjustable, and that the lower end of the elongated concentric socket part (20; 21-23) can be placed on a stop (31) 6. Rotary pendulum according to claim 1, characterized in that the surface treatment of the the parts forming the pendulum body (20; 21-23; 25-27) exclusively by gold vapor deposition in the Vacuum takes place. 7. Rotary pendulum according to claim 1, characterized in that the one another to form a solid sphere complementary parts, open spherical shell (26) and cover part (27), inside interlocking approaches (29,30), which are connected to one another by form or force fit. 8. Rotary pendulum according to the preamble of claim 1, characterized in that that the drive element is a cam disk (53) which has a first wheel (55) and a shaft (56) is connected, that a rocker (60) can be freely pivoted on the shaft (56) is attached, on which a further wheel (62,63) is rotatably mounted, which with the first wheel (55) is firmly in engagement (55,62) and with a wheel (64) driven by the clockwork (50) by its own weight the rocker (60) is held in engagement (63,64), which under the influence of one on the cam disk (53) function-related torque jams caused by lifting the rocker (60) is temporarily solvable