DE2704358A1 - AUTOMATIC STOP DEVICE, IN PARTICULAR FOR ICE MACHINES FOR DOMESTIC USE - Google Patents

Description

Godfather η tan v / old c

27 0-358

Dipl.-Ing. Dipl.-Chem. Dipl-Ing.

E. Prince - Dr. G. Hauser - G. Leiser

Ernsbergerstrasse 19

8 Munich 60

SEB S.A. January 28, 1976

Selonftey, Cote d'Or / France

Our reference : S 2903

Automatic parking device, in particular for ice machines

for home use.

The invention relates to an automatic parking device, in particular for an ice cream machine for domestic use, which e.g. should be set up in a freezer section of a refrigerator.

Various devices of the type mentioned are known, in particular for performing automatic shutdown a home ice cream maker having a motor and a drive mechanism carried by a holder to rotate a horizontal arm around a vertical axis in the operating position. At least one impeller jumps across it horizontal arm and is rotatable on the arm so that it can rotate in a plane lying transversely to the arm.

The wing is prevented from rotating Notching held in a working position in which the Wing is approximately perpendicular in a plane defined by the horizontal arm and the perpendicular axis of rotation of the arm.

In this vertical position, the wing can stir the mixture to be frozen evenly, which is located in a vessel arranged under the arm and centered on said axis of rotation. Under the action of If the mixture hardens while it is frozen, the wing can automatically be retracted around the arm in an approximately horizontal position Fold position.

Attempts have been made to use various devices for

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automatically when the ice machine of the above type is switched off, In order to avoid in particular a harmful prolonged heating effect of the motor 1-5U, de339Tx work after the solidification see below freezing Gemiachs undesirable:> rird.

Such automatic parking devices for an Eisaaschina of the type specified are particularly in the German Patent applications JTr. P 22 44 737.6 of September 13, 1972 and No. P 25 00 590.7 has been proposed.

Experience shows, however, that the known devices on the automatic shutdown of an ice machine of the above Kind have various disadvantages, especially in an ice machine with two concentric containers for which the invention in particular is intended. Such an ice machine includes a stirring device with two pivotable blades, whose each is assigned to one of the containers. In each container namely the stirring of the mixture to be iced with one of the in each container contained mixture made exactly adapted duration will. If the more liquid Gamisch3 is stirred too briefly, there is a risk that it will freeze incorrectly. An unnecessarily prolonged stirring of the more viscous mixture, on the other hand, requires an uneconomical, powerful and bulky one Engine. In addition, such agitation and such a motor generate wasteful additional energy consumption and heating detrimental to proper and rapid freezing of the two mixtures. With a weaker engine there is a risk of it being blocked.

The invention aims to remedy the above disadvantages by allowing a storage device in a simple manner for an ice cream maker with two concentric containers to produce, which is operationally safe and insensitive to icing and no risk of blocking the drive motor brings with it.

The invention relates to a storage device, in particular for a domestic ice cream maker, having a motor and a drive mechanism carried by a holder to rotate a horizontal arm around a vertical axis in the operating position, / exnem under the rotating arm arranged and centered on the axis of rotation of the arm, wel-

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ches can absorb a first mixture to freeze and from an annular container for aweibee mixture to be frozen is surrounded, whereby the:> raasi sees β rotatable arm Trralcti3ch ayinmä meets two üäh-cilü.-gel on either side of its locrechtea axis of rotation carries, which are pivotable on the era, protrude on this one and are each assigned to one of the said containers, whereby each wing is rotatable about a horizontal axis in a plane transverse to the ana and prevents rotation Latch is held in an approximately vertical working position to allow the stirring of the mixture to be frozen in dam corresponding To effect container, under the action of a solidification de3 freezing Gemiacha each wing can automatically fold around its horizontal axis into an approximately horizontal retracted position, with a holder attached to the dam Feed switch for the motor is a protruding element has, which is located by a in the retracted position Wing can be operated.

According to the invention, the automatic shut-off device is characterized in that the switch of the motor has two actuating levers lying one above the other, which is assigned to one of the blades on each, the switch being closed when at least one of the levers is in the operating stall, each of the agitator blades in the retracted position Stallion can come into contact with one of these operating levers in order to bring it into the parking position, the switch of the motor being opened only when the two levers are in the parking section.

As a result of the significant, from the engine which

rotating arm and the wing can trigger the switch clearly and without the risk of blocking the motor take place. This engine torque in particular enables it to be overcome any additional mechanical resistance due to the icing of the switch actuators. thanks to System of the two operating levers of the switch and thanks to the above Working conditions will be the same for each mixture to be frozen necessary agitation and shutdown of the engine after completion of the agitation of the mixture, its freezing the longest takes, made exactly.

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BATH ORIGINAL

According to a preferred embodiment of the invention, the agitator blade is connected to the horizontal arm by means of a connecting socket which can be pivoted around the arm, with each adapter being in the same position as the blade 3 by an outer radial projection on the connecting socket of the wing 3 can be touched in order to interrupt the supply of the motor 3, means being provided which hold the operating lever 3 stable in an operating position of the motor or in a shutdown position.

These holding means have e.g. a fixed to the

Operating lever connected to it equiaxed plate on which has a profiled sector on the edge which engages with a rotary pin in a bracket attached to the holder, wherein the profiled sector carries a holding projection, which elasbx3ch cooperates with two recesses of the bracket to the Hold the operating lever in one or the other of the two above positions. The bracket is useful in a single one Piece molded together with the holder while the plate is made in a single piece from molded plastic especially made of polyacetal resin.

As further stated inks, these measures enable a storage device to be provided in an economical manner long service life and a very soft working process.

The invention is explained below by way of example with reference to the drawing.

Fig. 1 is an exploded view of a equipped with an automatic storage device according to the invention ice machine with two containers.

Pig. 2 is a bottom plan view of the upper portion of the holder of the ice machine of FIG Actuator de3 shows switch for stopping the engine.

Fig. 3 is a vertical section of the ice machine of Fig. 1 in the operative position.

FIG. 4 is a top plan view of the ice machine of FIG

Fig. 3, which, with the breakaway of parts, the switch for supply of the Hotor3 and its double actuator shows »

5 is an enlarged axial section of the dual actuator of the ice machine of FIGS. 3 and 4.

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Fig. 6 is an exploded view of that same double actuator.

i ¹ ! ^. 7 "Ίηά 3 3 Lad ro α montan -ied ^ aarra Anaishtan

of the two profiled plates of the actuator shown in FIG. 5 and 6.

Pig. 9 and 10 are views seen from below of the two operating levers of the same double organs.

Pig. 11 to 13, which in the same way as

Fig. 4 are shown on a larger scale, show schematically three drive positions of the automatic parking device according to the invention.

In the embodiment of FIGS. 1 to 4, the

Automatic parking device for an ice machine for domestic use is provided, which has a motor 1 and a reduction gear 2 which are attached to a holder 3 and, in the operating position, set a horizontal arm 4 in rotation about a vertical axis X1-X2. The rotation of the Arm3 4 is to be (not shown) placed in a uniform motion Beaug on the holder 3 · The ice machine is intended, for example, in the freezer compartment of a Küh l barrier.

By way of example, with reference to FIG. 1

Bi3 4 described ice machine has a middle vessel 5 for a erat83 mixture to be frozen and one surrounding the middle vessel 5 annular container 6 for a second mixture. The horizontal arm has two sections 4A, 4B, which are practical are arranged symmetrically on both sides of the vertical axis of rotation X1-X2 of the arm. An impeller assigned to the middle vessel 5

7 is connected to section 4A of arm 4, while another, the agitator blade 8 associated with the annular container 6 is connected to the section 4B of the arm 4. Each agitator blade 7 »8 jumps across to the corresponding section 4A, 4B of the Anna and is connected to this section by means of a connection tab 7A, 8A connected, which can be pivoted about the arm and is in a working position by a latching (not shown) preventing this rotation of the wing 7, 8 is held.

In this working position, each wing is 7,

8 practically perpendicular in one through the horizontal arm 4 and the perpendicular axis of rotation X1-X2 of the arm defined plane. Every wing

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risr

30 can carry out the stirring of the freezing Gexniachs, which is 3ich in the associated container 5, 6, arranged under the Arn 4 and on the axis of rotation X1-K2 -en X3Z. Among other things, the action of the .dr3t; arrung dea Geai3ca3 during d & a (xefreeens, each wing can automatically pivot around the arm into a practically horizontal retracted position, as shown for the inner wing 6 in Figs. 3, 4, 11.

The holder 3 has mechanical means which through './ at least one sucked back in the practically horizontal Position located wings 7, 8 can be operated to a switch 11 on the holder for supplying the motor 1 in the Bring parking position.

According to the invention, the switch 11 is actuated by an actuating member 13 with two levers 13A, 13B of different lengths lying one above the other, which the holder 3 protrudes on the outside of a wall. This preferably forms a housing which contains the motor 1, the reduction gear 2 and the switch 11. The two actuating levers 13A, 133 lying one above the other can be pivoted about a practically vertical axis X3-X4 (FIGS. 1 »3» 5). The switch 11 is closed (FIG. 12) when at least one of the levers 13A, 13B is in the working position. Each agitator blade 7 or 8 can grasp one of the levers 13A, 133 in the retracted position (FIGS. 3, 4) in order to bring it into the parking position. The switch 11 of the motor is opened (FIG. 13) when the two actuating levers 13A, 13B are in the shutdown position. The connecting bushing 7A, 8A of each agitator blade 7 »8 preferably carries an outer projection 7B, 8B projecting radially on the bushing 7A, 8A. Each outer projection 7B, 8B can come into contact with an actuating lever 13A, 133 of the switch 11 in the retracted position of the corresponding wing 7, 8 in order to bring the switch 11 into the parking position and to interrupt the supply of the motor 31 .

Means are provided to keep each of the two operating levers 13A, 13B stable in either the working position of the motor 1 (Fig. 11) or in the opening of the switch 11 to keep appropriate stables (Fig. 13) to turn off the Motor3 1. In the one shown in detail by way of example in FIGS. 5 to 13 Audführuagsform is each lever 13A, 13B rotatably with

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'/ 0- a plate 14Δ, 143, which is arranged in the vicinity of the switch 11 within the housing formed by the holder 3, parallel to the wall thereof, on which the levers are attached. Each plate I-JA, I43 has the same axis as levers 15A, 133 and has a profiled sector 15 on the edge, which engages in a bracket 16 with a rotational play corresponding to the deflection provided for the levers 13A, 13B about the axis X3-X4 ( 7ig. 11 to 13). The profiled sector 15 of each plate 14A, 14B carries a holding projection 17, which resiliently acts with two recesses 16A, 163 of the lever 16 sus aminen-y to each of the actuating levers 13A, 133 stable in one or the other of the above Hold positions.

On either side of each profiled sector 15 of the plates 14A, 14B lying one above the other, the bracket 16 has two Projections 160, 16D, each of which has an end stop for a the operating lever 13A, 13B in each of its two already mentioned Forms boundaries.

Expediently, the holder 3 made of press molding, and the bracket 16 is produced by molding in the mold in a single piece with the part of the holder 3 carrying the bracket 16. Every Plate 14A, 143 is preferably made in a single piece of molding compound manufactured. The elasticity of the holding projection 17 of each plate is maintained by the elasticity of the plastic. This is e.g. a polyacetal resin, which has a very precise molding with an excellent surface finish and also offers very favorable conditions of elasticity and life, as explained below.

7 and 8 show a preferred form of the guide two plates 14A, 14B, whose circular sector 15 is on the axis of rotation X3-X4 of the plate has centered curved element 18. The curved element 18 has two ends 18A, 18B which attach to the plate protrude and each one of the two end stops 16C, 16D of the bracket assigned. The curved element is connected to the remainder of the plate 14A, 14B only by its two ends 18A, 18B and carries between these the projection 17 for elastic retention the plate. The curved element 18 therefore works on elastic bending for the engagement of the restraint before jump 17 in the Recesses 16A, 16B of the bracket 15 or the exit from these.

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BATH ORIGINAL

This makes it possible that the storage device according to the invention nit a great softness and a long service life, as Fig. 3 is explained below.

Dar switch 1 1 veiJt 3.3. a two bi states, roughly parallel Metal lamellas 21Δ, 21B (Fig. 11 to 13), both ends of which in the opening position dee corresponding to the shutdown of the engine 1 Switch 11 by the elasticity of one of the slats, e.g. 21A, are spread apart. These ends of the flexible slats 21A, 21B can under the action of a contact finger 22A, 22B a each plate 14A, 14B come into contact with one another (Fig. 11, 12) to make the engine 1 work.

The switch 11 is therefore (Pig. 12) by the effect a single contact finger, e.g., finger 22B of plate 143, closed. Br can, however, only be opened (FIG. 13) when the two fingers 22A, 22B are withdrawn, waa the same-sided Shutdown position of the two plates 14A, 14B corresponds.

The operation of the above storage device is described below.

To start the ice machine (Fig. 3 »4) the two actuating levers 13A, 13B are in the closed position of the switch corresponding position of Fig. 11. The two agitator blades 7, 8 are in the vertical position (Fig. 1) and ensure that the 5 » 6 contained mixtures to be frozen. When the desired freezing begins to occur, the solidification creates the mixtures automatic folding of the agitator blades 7, 8 into the horizontal retracted position, as has already been explained. E.g. in FIGS. 3, 4, 11 the retracted position of the inner wing 7 shown.

In the retracted position of one or the other agitator blade 7, 8, the radial projection 7B, 8B of the connecting bushing of the blade can come into contact with the corresponding actuating lever 13A, 13B (Fig. 3, 4, 11) »around the corresponding plate, for example 14A (Fig. 12) to bring into the parking position. When the two agitator blades 7, 8 are folded down into the approximately horizontal retracted position, the two projections 7B, 8B can actuate the two levers 13A, 13B, whereby the two plates 14A, 14B are brought into the shutdown position (FIG. 13) and the automobile-

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Matiache cause the motor 1 to be subdivided.

The invention has an automatic parking device several essential. · *, oereits tsLlvei ^ e. ^ rv ^ hiite advantages.

Thanks to the i-iotormomaat; that the two agitator blades 7, <3 supporting horizontal arm 4 can exert a considerable force on the formed by the two levers 13A, 13B lying one above the other Actuator ds3 switch 11 are exercised, do the automatic opening-d33 switch 11 clearly to effect and the motor 1 to turn off. This avoids an undesired lengthening of the working of the 3-Iotor I or even its blocking, what a good job of the ice machine and the service life of the Ilotor results in harmful heating.

The radius of the paths of the projections 7B, 8B around the axis of rotation X1-X2 (FIGS. 1, 3, 4, 11) can easily be adapted so that a sufficient actuation torque and a suitable deflection amplitude of the levers 13A, 133 are obtained at the same time. The lengths of the levers can easily be chosen accordingly.

Thanks to the system of two operating levers 13A, 133 des Switch 11, each of which has an impeller 7, 8 in the above Conditions are assigned, one achieves exactly the stirring and shutdown required for each mixture to be frozen of the motor at the end of the stirring3 of the mixture that has to be frozen for the longest time without the risk of jamming the motor.

The production of the double-old actuating member 13 is made Plastic parts molded in the mold ensure the softness of the working of this organ, but the mass production is economical is. In particular, the selection of a polyacetal resin enables the operating levers 13A, 13B and the to be precisely formed two plates 14A, 14B with a profiled sector (Fig. 5 to 10).

The properties of the polyacetal resin allow one to obtain excellent surface finish of the various sections of these parts, which are suitable for assembly with compression or, on the contrary, with a small radial play to produce the desired wedges or rotary fits (Fig. 5,6) definitely 3ind. The elasticity and durability of the resin guarantee that the panels will remain elastic over a long period of time 14A, 14B in the two intended positions (Figs. 11 to 13) thanks to their lead 17.

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270A358

The internal arrangement of the Bügsla 15 and the plates 14A, 143 prevents these elements from icing up and ensures so the easy work of the inventive storage irorrich-

above can easily eina perfectly smooth V / and dea Kalter3 'j _y preferably are made of a molded material, whereby each resistance of the rotatable Hsbal yird avoided at a local EiaVolagerung.

In addition, the levers 13A, 13B can be conveniently used for commissioning de3 Mobors 1 nu start of workn3 the Ei3aaachina uses xferden, e.g. after dis33 in the freezer section d33 Euhl3chranks was brought.

Dia invention a k nn weraan naturally discussed. Thus, in particular in a Si3ina3chine of the type shown in Fig. 1, only one of the two containers can be used, eg the middle vessel 5 or the annular outer container 6. E3 is then sufficient, the corresponding lever 13A or 13B of the switch 11 in the cisr shutdown position allow.

It is also possible to use a single container (not shown) with a large diameter, which takes up practically the same volume as the arrangement of the ball containers 5, 6 of FIG. Each wing 7, 8 can then stir the mixture to be frozen in a zone of the single container and work independently, actuating the associated lever 13A, 13B of the switch as soon as the mixture has solidified sufficiently in the corresponding stirring zone.

Of course, you can also make the wings 7, 8 removable and easily exchangeable, e.g. to create more or less depths To correspond to containers of different calibers, which are used separately or in pairs in a concentric arrangement.

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Claims (1)

PAT ASSOCIATION Automatic Ab3 bellvoericatung, to La represents Betriebaatellung rotate a drive mechanism, which are gebragen from a calf a horizontal Arn about a vertical Ach3e au, and a lower dsia arranged to, rotating era and to the rotational axis of the Ars3 centered G-ef-lfl, we Ic ha a Öia first au freezing mixture auinenaei karui ixnd voa aineni ring-shaped container for a second au ^ afrieriiidea mixture, inputted, "robei dar horizontal rotator: \ rm practically aynunetrisoh on both sides of its vertical axis of rotation swai flap which carries on the arm are pivotable, protrude at dis3ea and are assigned to each of the named containers, "each wing has a horizontal axis that is rotatable in a plane that is transverse to your arm and is held in an approximately vertical working position by a twist preventing rotation, inter alia cause Durohriihrea de3 to be frozen mixtures in the corresponding container su, where xmter is the effect of solidification In order to prevent the frozen geese, each wing can automatically fold around its horizontal axis into an approximately horizontal retracted position, with a food switch for the motor attached to the holder having a protruding element which can be operated by a wing in the retracted position, characterized in that the switch (11) of the motor has two actuating levers (1pA, 13B) lying one above the other, each of which is assigned to one of the wings (7, 8), the switch (11) being closed when at least one of the two levers is (13A, 13B) is in the operating position, whereby in the retracted position each of the agitator blades (7, 8) can come into contact with one of these actuating levers (13Λ, 13B) in order to bring it into the shutdown position, whereby the switch (11 ) of the motor (1) is only opened when the two levers (13A, 13B) are in the abatella division. 2. Apparatus according to claim 1, wherein each agitator blade (7, 8) with the horizontal arm (4A, 4B) by a around the era rotatable connector 3 socket (7A, 8A) is connected, thereby characterized in that the Yerbindungsbuch.se (7A, 8A) has an outer 709836/0630 BATH ORIGINAL Its radial projection (7B, 83) carries so that aineia corresponding lever (13A, 13B) of the switch (11) never comes into contact in the retracted position of the wing (7, 8). to <ll3 power DEAE motor unbarbrachen au (1). 3. Apparatus according to claim 1 or 2, characterized in that each actuating lever (13A, 13B) fixed nit a plate (14A, 14B) is connected to the lever, which has a profiled sector (15) at the edge, softer with a rotary play in a bracket attached to the holder (3) (16) engages, the profiled sector (15) sin ^ n Halt <3vorsprung (17) wears, which is elastic: ait swei Ausaehnrun & an (1 oA, 16B) of the bracket 3 (16) cooperates to the actuating lever (13A, 133) in one or the other of the two stables mentioned hold back. 4. Apparatus according to claim 3, characterized in that the bracket (16) on both sides of the profiled sector (15) of the plate has two protruding rings (16G, 16ΰ) whose jader forms an end stop for the actuating lever (13A, 13B) in each of its two stated positions. 5. Apparatus according to claim 4, characterized in that the profiled sector (15) of the plate (14A, 143) has a curved element (18) which is practically centered on the axis of rotation (X3-X4) of the plate (14A, 14B) X3t and two projecting ones Ends (18A, 18B) each having one of the stops (16C, 16D) de3 bracket (16) is assigned, the curved element (18) connected to the rest of the plate (14A, 14B) only by its ends (18A, 18B) and between these the elastic retaining means before jump (17) of the plate (14A, 14B) carries. 6. Device according to one of claims 3 to 5, in which the holder contains a motor and its dining table Having housing, the actuating lever being attached externally to a wall of the housing, characterized in that the plate (14A, 14B) provided with a profiled sector (15) inside the housing (2) parallel to the said Viand of the same arranged i3t. 7. Device according to one of claims 3 to 3 6 with a switch with two elastic practically parallel slats with two switches in the open position for deactivation 709836/0630
BAÖ ORIGIN & of the motor spread apart, which can come into contact with each other in the closed position of the switch for the operation of the motor, characterized in that each plate i'ik, 113) ri-La-ii 3: Lner (2 t A) the elaa ";i3f; iuin Lamellenauge arrange ~. * a X contact finger (22A, 22B) to press this lamella in the operating division of the corresponding actuating lever (13A, 13B) against the other lamella, whereby the contact finger (22A, 22B ) of each plate (14A, 14B) in the shutdown position of the lever (13A, 133) removed from said elastic lamella (21A) i3t. 3. Device according to one of claims 3 to 7, characterized in that the holder (3) au3 is formed in the fora Material consists, and da3 the bracket (16) by molding in one piece is made with your holder (3). 9. Device according to one of claims 3 bi3 7, characterized characterized in that the plate (HA, 14B) in a single Piece made of a plastic molded in the mold, the elasticity of the retaining element in front of the crack (17) of the plate (14A, 143) is obtained by the elasticity of the plastic. 10. The device according to claim 9 »characterized in that that the plate (14A, 14B) is made of polyacetal resin 709836/0630