EP0916760B1 - Device for fixing the oscillating part of a household washing machine - Google Patents

Description

The invention relates to a device for fixing the vibrating system of a household machine, such as drum storage of a washing machine during transport, in particular rail transport, consisting of screw bolts in screw holes of plastic parts of the vibrating system or of rigidly connected approaches made of plastic the respective shaft is passed through openings in the machine rear wall and the respective head of which is supported on a stiffening profile or crossbar attached to the machine rear wall or to it (if necessary removable), between the inner surface of the machine rear wall or the stiffening profile or the crossbar and the vibrating system a plastic spacer sleeve penetrated by the shank of the screw bolt is arranged, the device besides the spacer sleeve and the screw bolt another between the bolt head and the sleeve end face ordered form-fitting device includes.

Such a device is known from DE 195 25 316 A1.

The known device is particularly for such household machines as Washing machines provided, in which the tub is made of plastic is. Such plastic materials have limited strength values and it is happened that also with the specially tailored to these tubs Arrangement according to the cited prior art problems occur when heavy loads occur repeatedly and / or particularly high peak values to reach. Tests have shown that the threaded dome of the Alkaline container made of plastic for a load case with particularly high Acceleration forces are torn off. Furthermore, it can happen that at plastic deformation of the plastic sleeve between the rear wall of the Household appliances and the vibrating system creates a game, which is more recent Stress can lead to the fact that the entire system no longer forms a unit and Forces occurring in this way, in particular vibrating forces, can no longer be adequately controlled to avoid damage.

The object of the invention is to eliminate these disadvantages and to provide a device according to the above way of creating the even higher acceleration forces endures and does not lead to interference even if such high Accelerating forces occur repeatedly.

The object is achieved in that a compression spring, in particular a spiral compression spring, is arranged between the bolt head and the positive locking device, and in that the positive locking device forms a guide attachment for the spiral spring.

This ensures that when the vibration system is stressed Load peaks due to mass forces due to high acceleration over that of the Coil spring applied spring forces are partially compensated. Also enables this spring device that a plastic deformation of the plastic sleeve game occurring between the rear wall and the vibration system is closed again. As a result, the overall system retains its dynamic unity and recurring ones Load peaks caused by acceleration forces and shaking movements do not result to uncontrollable conditions.

The prior art is based on an older prior art, namely the DE 42 15 780 C2. There is in connection with a transport lock for the vibrating system of a household machine, which is however made of steel and does not have the problems of plastic tubs, also an arrangement shown, which works with a compression coil spring. There is with this Compression coil spring replaced a perforated metal sleeve, so with this one nothing to do about the problem.

According to one embodiment, there is a disk between the spiral spring and the bolt head arranged, which ensures a favorable load distribution between the components.

According to a further development, it is also advantageous if, in the form-locking device forming a guide projection for the spiral spring, this guide projection has an axial extent which is slightly less than the block length of the spring, that is to say the length of the spring in the compressed state. In addition to or instead of the guide attachment, a plastically deformable attachment can also be provided, which can then serve as additional security, in particular if it is longer than the block length of the spiral spring, by acting as a plastic shock absorber. The device then not only has guiding properties for the coil spring as well as for the bolt inserted through it, but also securing properties, in that energy is destroyed by plastic deformation.

The guide boss can carry axially extending detents that relate to the spring of the guide lug in position, so prevent that the spring may be lost goes.

The form-fitting device can receive different designs. As A positive locking device according to the entry has proven to be advantageous mentioned document, in which the positive locking device from a flat disc Metal comprises, which has an axially extending nose at an edge region has, wherein the rear wall or cross member or the like. A breakthrough for the Has passage of bolt head and washer, of which breakthrough at least a narrowed area in the direction of the axis of the traverse or the like Bolt shank cross section can accommodate, and being narrowed at the end Area at a distance from this another breakthrough is provided such that he can accommodate at least one nose of the disc when the disc load-bearing threaded bolts in or at the end of the narrowed area.

This design of the positive locking device is particularly favorable if Household machines are to be secured in the event of later disassembly the securing device has no loosened parts in the area between the rear wall and vibrating system (suds container). This is true for example for washing machines that have a floor that on the one hand for Noise reduction serves, on the other hand, advantages as a so-called aqua stop device offers. Falling parts would then reach this floor and possibly close Malfunctions and noise when the machine flings. In such mostly high-quality machines, it is therefore favorable that Device for fixing the vibrating system to design so that it without Disassembly into its individual parts can be removed from the machine.

The articulated connection shown in the aforementioned DE 195 25 316 A1 between the flat disc made of metal and the spacer sleeve made of plastic be further developed in that a radially opposite edge region the flat disc has a radial projection with an opening which is from a hook nose that extends in one piece from the spacer sleeve is penetrated. This embodiment is cheaper to manufacture and easy to use and holds the two parts together more securely than is the case with the prior art is, so that here the danger of falling parts is even less.

According to a further embodiment, the forming the positive locking device flat disc made of metal in the area of the axially extending nose axially opposite direction attached U-shaped hook for receiving the Cross section of a machine connection cable, the free end of the U ends approximately in the disc plane. In particular, it is advantageous if the U-shaped There is a double hook, and the two hooks are axial take your nose between you. This has the advantage that the Exposing the connecting cable to the end stand is reminded of that Security device also actually remove because it is used to loosen the cable must also release the security device. If in one piece from the spacer sleeve Extend leaf springs that are on the free ends or on the inner wall of the U-shaped Applying the hook and pushing it away from the sleeve will also achieved that the axially extending nose when loosening the bolt what comes out of the breakthrough in the traverse or rear wall Assembly and disassembly easier. Since the leaf springs are made of plastic, They also protect the cable against sharp edges that the U-shaped hooks of the metal stamped disc by burr.

Inexpensive household machines do not have a base plate. One-time parts that falling down between the housing wall and the tub, thus occur the floor on which the machine is standing and can be removed from there, without a base plate hindering their removal.

For such a simpler machine without a base plate, a device for Fixation of the vibrating system is advantageous, in which the positive locking device comprises a dome-shaped disk made of metal or plastic, the traverse or rear wall or the like. A breakthrough for the passage of at least the Has bolt shaft, and the wall material around this opening the wall or traverse or the like. Forms a dome-shaped depression that the dome-shaped disk can be positively received in it.

Such an arrangement is cheaper to manufacture than the one at the beginning called arrangement with the nasal disc.

It is in the latter embodiment with a dome-shaped depression favorable if the end face of the spacer sleeve directed towards the rear wall or the like likewise forms a dome-shaped depression into which the dome-shaped shape is formed Material of the rear wall or the like. Can be suitably accommodated.

In this embodiment, there are numerous developments, such as this, in which the spring-facing side of the spherical disk is radial runs stiffening walls. The spacer sleeve can also be on your dome-shaped end face form an edge enlarging the dome surface. So it is also possible that radially extending between the sleeve edge and sleeve Reinforcing ribs are arranged.

Alternatively, the form-locking device can also be a cylindrical or prismatic device or include a spherical section-shaped molded part made of metal or plastic, and the Traverse or rear wall or the like. An opening for the passage of at least the Have bolt-like, and around this breakthrough the wall material of the Back wall or traverse or the like. Such a cylindrical, prismatic or spherical segment-shaped depression form that the molded part in a form-fitting manner can be included. In the latter embodiment, it is advantageous if the end face of the spacer sleeve facing the rear wall or the like is likewise form a cylindrical or prismatic or spherical segment-shaped depression, in the appropriately deformed material of the rear wall or the like is.

The invention is explained in more detail by means of exemplary embodiments, which in the Drawings are shown.

Fig. 1

in einer Rückansicht eine Haushaltsmaschine mit auf der Rückwand aufgesetzten Streben zur Sicherung eines innerhalb der Maschine angeordneten schwingend aufgehängten Systems;

Fig. 2

in einer perspektivischen Ansicht eine dieser auf der Rückwand aufgesetzten Streben mit der zugehörigen, bis zur aufgehängten Einrichtung reichenden Bolzenbefestigung;

Fig. 3

in einer teilweise axial geschnittenen Seitenansicht eine bekannte Abstandshülse aus Kunststoff, die im Zusammenhang mit der Anordnung gemäß Fig. 2 verwendbar ist;

Fig. 4

eine Draufsicht auf die in Fig. 3 dargestellte Abstandshülse;

Fig. 5

eine Schnittansicht entlang der Linie V-V der Fig. 3;

Fig. 6

eine vergrößerte Detailansicht der Stelle X der Fig. 3;

Fig. 7

eine ebenfalls vergrößerte Detailansicht an der Stelle Z der Fig. 3;

Fig. 8

eine Draufsicht auf eine Scheibe, wie sie im Zusammenhang mit der Hülse gemäß Fig. 3 verwendbar ist;

Fig. 9

eine Ansicht von rechts auf die Scheibe gemäß Fig. 8;

Fig. 10

eine gegenüber der Fig. 9 um 90° gedrehte Seitenansicht auf die Scheibe gemäß Fig. 8;

Fig. 11 und 11a

unterschiedliche Nasengestaltungen;

Fig. 12

eine abgewandelte bekannte Abstandshülse in teilweise geschnittener Seitenansicht mit Schraube und Scheibe;

Fig. 13

eine Draufsicht auf die Anordnung gemäß Fig. 12;

Fig. 14

eine Ansicht auf die Abstandshülse ähnlich der Ansicht von Fig. 3;

Fig. 15

eine Draufsicht auf die Hülse von Fig. 14;

Fig. 16

eine um 90° gegenüber Fig. 14 gedrehte Ansicht;

Fig. 17

eine Schnittansicht entlang der Linie XVII-XVII der Fig. 16;

Fig. 18

eine Draufsicht auf die Scheibe der Fig. 12;

Fig. 19

eine Seitenansicht auf die Scheibe der Fig. 18;

Fig. 20

einen Schnitt entlang der Linie XX-XX der Fig. 18;

Fig. 21

einen Schnitt entlang der Linie XXI-XXI der Fig. 19;

Fig. 22

in einer Ansicht ähnlich wie Fig. 12 eine um eine Schraubenfeder erfindungsgemäß erweiterte Anordnung;

Fig. 23

eine Ansicht von oben auf die erfindungsgemäße Anordnung gemäß Fig. 22;

Fig. 24

in einer Ansicht ähnlich der Fig. 22 eine andere Ausführungsform der Erfindung;

Fig. 25

eine Ansicht von oben auf die Anordnung gemäß Fig. 24;

Fig. 26

eine perspektivische auseinandergezogene Ansicht einer alternativen Ausführungsform für die Abstandshülse; und

Fig. 27

in einer Seitenansicht den zugehörigen zusammengebauten Zustand.

It shows:

Fig. 1

in a rear view of a household machine with struts placed on the rear wall for securing a system which is arranged in a swinging manner within the machine;

Fig. 2

in a perspective view one of these struts placed on the rear wall with the associated bolt attachment extending to the suspended device;

Fig. 3

in a partially axially sectioned side view of a known plastic spacer sleeve which can be used in connection with the arrangement according to FIG. 2;

Fig. 4

a plan view of the spacer sleeve shown in Figure 3;

Fig. 5

a sectional view taken along line VV of Fig. 3;

Fig. 6

an enlarged detail view of location X of FIG. 3;

Fig. 7

an enlarged detail view at the point Z of Fig. 3;

Fig. 8

a plan view of a disc, as can be used in connection with the sleeve according to FIG. 3;

Fig. 9

a view from the right of the disc of FIG. 8;

Fig. 10

a side view rotated by 90 ° relative to FIG. 9 on the disk according to FIG. 8;

11 and 11a

different nose designs;

Fig. 12

a modified known spacer sleeve in a partially sectioned side view with screw and washer;

Fig. 13

a plan view of the arrangement of FIG. 12;

Fig. 14

a view of the spacer sleeve similar to the view of Fig. 3;

Fig. 15

a plan view of the sleeve of Fig. 14;

Fig. 16

a view rotated by 90 ° with respect to FIG. 14;

Fig. 17

a sectional view taken along the line XVII-XVII of Fig. 16;

Fig. 18

a plan view of the disc of Fig. 12;

Fig. 19

a side view of the disc of Fig. 18;

Fig. 20

a section along the line XX-XX of Fig. 18;

Fig. 21

a section along the line XXI-XXI of Fig. 19;

Fig. 22

in a view similar to FIG. 12 an arrangement expanded according to the invention by a helical spring;

Fig. 23

a view from above of the arrangement according to the invention according to FIG. 22;

Fig. 24

in a view similar to FIG. 22, another embodiment of the invention;

Fig. 25

a top view of the arrangement of FIG. 24;

Fig. 26

a perspective exploded view of an alternative embodiment for the spacer sleeve; and

Fig. 27

the associated assembled state in a side view.

For a better understanding of the invention shown in FIGS. 22 to 27 Arrangements are initially discussed in more detail on a known device, which in 1 to 21 is shown.

1 shows a household machine 10, for example a washing machine, within which a vibrating system 12, for example a spring-loaded one The tub of a drum machine shows which tub 12 due to its swinging suspension with respect to the housing walls of the Household machine can be deflected, in particular this occurs when Rail transport on when maneuvering with such machines loaded wagons run onto other wagons. For this reason during such transport the vibrating system, such as the Suds container 12, are fixed with respect to the housing walls of the machine.

1 are two for this purpose on the back of the washing machine Trusses 14 arranged, which are shown in Fig. 2 a little more clearly. These cross members 14 are made of sheet steel and can be provided with reinforcing beads 16, Beadings 17 and the like can be stiffened. The cross member 14 is at both ends cranked and on the one hand forms contact tabs 18 with which the cross member 14 Edge areas of the rear wall 20 of the household machine 10 can be placed, preferably such that the bends or indentations 22 or 23 Traverse 14 included in corresponding recesses or receiving areas which may be formed in the rear wall for this purpose, or are present anyway. These give the trusses a certain amount of security compared to a displacement parallel to the rear wall 20. Instead of the trusses a welded plate can also be provided, as well as the crossbar can be firmly welded.

Threaded bolts 24, one of which can be seen in FIG. 2, are on the one hand with their shaft through an opening 28, 128 in the trusses 14, on the other hand through one corresponding opening 26 in the rear wall 20 and into a corresponding hole is screwed into the tub 12 or the like. To one fixed distance between the outer surface of the threaded hole Alkaline container 12 and which serves to define in the inner surface of the cross member 14 a spacer 32 between the inner surface of the cross member 14 and the vibrating system 12 and is arranged on the shaft of the bolt 24. If you tighten the screw 24, the tub 12 is thus on the system of spacer sleeve 32 and bolt 24 with the cross member 14 and from there on the contact tabs 18 with the (particularly stable) edge region of the rear wall 20 of the Household machine 10 connected, z. B. by appropriate tensioning resilient suspension of the tub 12 a contact pressure on the crossbar 14th connects the retaining tabs 18 sufficiently firmly to the rear wall 20 so that, if necessary, special fastening devices, apart from securing against Displacement, as already described, can be unnecessary.

At the installation site you will then remove the screws 24 from their holes in the Unscrew the tub 12 and together with the spacers 32 and z. B. Removable trusses 14 so that on the one hand then Tub 12 or the other vibrating system can move freely, on the other hand the back wall becomes free of any protruding, now not more holding devices needed.

Of course, if it is deemed appropriate, the traverse 14 can also be one have their own attachment to the rear wall, for example a special one Screwing.

The opening 28 in the traverse is expedient according to FIG. 1, executed like a keyhole, whereby the larger area of the opening is shaped is that the head 30 of the screw 24 fits through, but then in the narrow range that the screw head can no longer move through can get through to the breakthrough. That makes it possible first of all Bolt 24 with the spacers 32 pushed through Insert rear wall opening 26 and in corresponding threaded holes or Blind holes (if it is plastic) of the tub 12 Screw in piece, then z. B. to put the crossbar 14 on the rear wall, so that the screw heads 30 of the respective z. B. one or two screws through the reach corresponding openings 28, and then the cross member 14 so to move the screw shafts into the narrowed areas. Then the screws can be tightened so that a Clamping force between the screw head and spacer sleeve 32 results in the cross member 14 holds between them. The screws can be machine screws that are in appropriate threads of the tub 12 can be screwed. There but this is a plastic tub 12 normal wood screws, which are in corresponding blind holes in the plastic material of the tub Cut the thread yourself.

Since the load capacity of plastic is limited, it is at least lower than that appropriate load capacities of steel, you can see the between Screw head 30 and spacer sleeve 32 apply compressive force and thus the Frictional force against displacement in the direction of the longitudinal extent of the openings 28 do not make it arbitrarily high. To ensure nevertheless that this axial Shift does not take place, is between the bolt head 30 and the sleeve end face arranged disc 34 is provided, which in FIGS. 8, 9 and 10 in different Views is shown in more detail and acts as a positive locking device.

For this purpose, the disc 34 according to these figures consists of a flat, round metal disc with a central bore 36 that matches the shaft diameter of the threaded bolt 24 is adapted, while the outer diameter 38 at least is as large as the outer diameter of the spacer sleeve 32.

The disc has one or two radially opposite edge regions and there axially extending nose or lugs 40, 42, one nose 40 over extends the outer diameter 38 of the disc, the other nose 42 against it returns. With the recessed nose 42, which is pointed at its end 10, can be seen, the disc 34 can be attached in an Opening 44 is inserted near the keyhole-like opening 28 or 128 are secured in this position against radial displacement is. The sleeve 32 need not be designed as a simple cylinder, but rather 3 to 7 can be specially designed, as described in DE 195 25 316 A1 is performed. 3 is a partially sectioned one Side view of the spacer sleeve 32, the upper end with one over the Provided flange outer circumference 45 of the sleeve extending flange assembly 46, whose circle diameter 55 is preferably equal to the circle diameter 38 of the Disk 34 is selected. The flange arrangement 46 faces two radially opposite edge areas deviations from the circular shape, namely on the one hand, an incision 57 that springs back from the circumference and that forms the attachment 42 the disc 34 is to take up, and accordingly approximately the width of the approach and a projection 50 projecting over the circumference of the circle in turn forms an incision 52 which is of such a width that the stem 53rd the mushroom-shaped extension 40, see Fig. 10, 11 or 12 is receivable, not against the head 54, 154 of the mushroom-shaped extension 40, 140. The disc 34 can therefore be placed on the flange 46 so that the mushroom-shaped extension 40 in the Incision 52 can be inserted and held there with a certain game. In this position, the disk 34 with its other attachment 42 lies on one Membrane 60, which closes part of the recess 57 in a breakable manner. Through this membrane 60, the disc 34 is held during assembly so that the approach 42 above the outer surface of the cross member 14 remains when the Spacer sleeve 32 with washer 34 and threaded screw 24 in the opening 28 or 128 inserted and then in the narrow area of the keyhole-like shape of the Openings 28 and 128 is pushed into it. This measure will prevents the lug 42 from hanging in the opening 28 with its narrow area remains instead of being pushed up to the isolated opening 44. First at this point the neck 42 is then tightened by the screw bolt 24 - in particular due to its pointed shape - through the membrane 60 pushed through and then finally reaches the isolated opening 44 and thus places the disk 34 against displacement from this position firmly.

To align the disc so that this approach 42 when pushed into the narrow area of the key-like opening 28 at the desired location, namely just above the isolated opening 44, the other serves Approach 40, which due to its wandering in the breakthrough 28 during the Sliding movement of the disc 34 aligns this disc so that the two Approaches to the axial extent of the cross member 14 are aligned.

A further ease of assembly results from the fact that the screw bolt in the Sleeve can be secured against falling out, for. B. by wing-like, lamellar lugs 62 injection-molded in one piece from the plastic, the are highlighted in Fig. 6 enlarged.

The fact that these slats are directed obliquely in the direction in which the Screw could fall out, they hold due to their spring action and their Penetration into the threads of the screw firmly enough so that this is essentially captive. Another embodiment is shown in FIGS. 15 to 17 with noses 94, 98.

5 shows in a cross section that the sleeve is not solid, Rather, it is essentially made up of different wall areas Has shape, which saves material and at the same time results in high strength. In particular, various longitudinal walls 64, 66, 68, 70 can be seen that are attached to both ends of the sleeve and possibly once between them by a circular Radial wall 72 are each stiffened with a circular circumference.

FIG. 11 shows even more clearly how the mushroom-shaped nose 40 according to FIG. 10 is configured, while FIG. 12 shows a somewhat different embodiment, in which the hat of the mushroom-shaped component remains narrower and is chamfered, the nose 140 12 from above with a certain pressure in the incision 52 of the Spacer sleeve can be pressed in and locked in place while the 10 or 11 inserted laterally into the recess 52 must become. The embodiment according to FIG. 12 is thus easier to assemble than 11.

As already mentioned, a normal wood screw can be used as a bolt suitable length can be selected, or a special one, for plastic provided threaded screw, in both cases the screw in the Plastic material cuts its own thread when the screw is tightened becomes. The forces to be absorbed in this case and the quality of the thread are sufficient for the purpose specified here.

To incline the washer 34 with respect to the mounting bolt enable this in view of the initially raised position of the nose 42 by the membrane, is a certain amount of play between the opening 36 of the Disc 34 on the one hand and the diameter of the shaft of the bolt near the head otherwise provided. This also results in a certain degree in terms of Alignment of the disk 34, on the one hand, through the nose running in the slot 52 and is caused on the other hand by the bolt shaft extending in the bore 36. The alignment inaccuracy thereby transmitted to the nose 42 becomes balanced by the pointed shape of this nose, which can be seen in Fig. 10 is and causes that the game has at least half the width of the nose without the Tip of the nose 42 out of the slot 57. This guide in channel 57 is also reached in the area where the membrane 60 is present, since this Membrane jumps back to a certain extent, as can be seen in FIG. 7.

To ensure that the spacer sleeve 32 leading the disc 34 in turn the opening 28, 76 is correctly guided is in the region of the flange arrangement 46 one facing down (towards the other end of the spacer sleeve) Strip-shaped extension 80 is provided, which extends radially outwards protruding approach 50, which in turn reduces the return 52 forms. Through this strip-shaped approach, which is approximately the width of the narrowed Has part 76 of the openings 28, the spacer sleeve 342 when inserted in the narrower area 76 this sleeve precisely aligned, such that finally the Incision 57 with the one above, through the membrane 60 above Sheet surface of the cross member 17 held nose 42 through the opening 44 in the Traverse arrives, so that the nose then when tightening the screw 42 breaks through the membrane and enters the opening 44, as already stated.

The assembly process is thus carried out in such a way that in a device according to FIG. 1, at the four attachment points 228 (there can also be only three) which can be seen there, a screw bolt 24 provided with a spacer sleeve and equipped with an additional disk 34 is provided through corresponding bores 26 in the The rear surface 20 of the device 10 is inserted and the thread of the screw bolt 24 is partially screwed or cut into the associated bore. The screwing takes place so far that the mushroom-shaped extension 40 inserted or inserted into the incision 52 of the flange 46 with its other extension 42 rests on the membrane 60 and is held there due to the alignment by the extension 40. Now a traverse 14 can be gripped and inserted with its two openings 28 over the screw heads 30 and the associated washer 34 (and, according to FIG. 22, but also the washer 25 and the spring 27), until the material thickness of the traverse 14 between the surface of the 3 on the one hand and the washer 34 on the other hand, whereupon the cross member 14 can be axially displaced into the gap thus formed until the shaft of the screw bolt 24 reaches the combined area of the keyhole-like opening 28, 128, 228 which in Fig. 2 is designated 76. As soon as the screw shaft has reached the end of this narrowed area 76, the nose 42 of the disk 34 is located just above the opening 44 according to FIG. 2, for which purpose this opening has to have a corresponding distance from the opening 28. During this displacement process, the nose 42 prevents unwanted twisting, so that the nose 40 actually comes to rest over the opening 44. These can be arranged on both sides of the opening 28 so that the direction of displacement can be selected as required. By moving the cross member 14, both of the fastening screws 24 provided here can be brought into the correct arrangement at the same time, so that subsequently both screws can also be tightened, during which tightening the nose moves through the membrane 60 into the opening 44 and ultimately there the overall arrangement secures against a shift back.

The contact surfaces 18 of the cross member 14 are against by screwing Edge areas of the rear wall 20 of the household appliance 10 pressed and expediently locking by appropriate shaping (projections) kept without special fastening measures would be necessary here.

When the household appliance is finally in place, the Screws 24 are loosened and can be removed from the rear wall together with the cross member 14 are removed, after which only the openings 26 and corresponding incised or anyway provided threads in the container 12 to the Remember transport lock.

12 and 22 is an axially partially sectioned side view Spacer sleeve 132 or 232 can be seen, the one instead of the thin wall Spring device 82 used to the disk 134 shown there in a side hold raised position. The figure also shows a bolt 24 recognize that penetrates the disc 134 and the sleeve 132 and 232 respectively.

13 and 23 is a top view of the arrangement according to FIGS. 12 and 22 respectively recognize, so the head of the bolt 24, including the washer 134 and underneath, mostly covered, the sleeve 132 or 232. Also 23 shows the washer 25, which in turn is on the compression spring (Coil spring) 27 rests, which according to the invention between the head 30 of the bolt 24 and the nose disc 134 is arranged.

14 and 15, a side view and a plan view of the sleeve 132, as well 16, a side view that is rotated relative to FIGS. 14 and 90 °, the arrangement of the tongues 82 become clear.

These tongues can, as shown in the figures, of a flange arrangement 146, which may be configured similarly, as shown in FIG. 3. Here too flange assembly 146 is substantially circular, see FIG. 15, with two itself radially opposite edge areas where deviations from the circular shape occur, namely an incision 157, which the approach 142 of the in Fig. 18th to 21 shown disk 134 should receive and accordingly approximately Has width, and a projection 150 projecting over the circumference of the circle in turn forms an incision 152, in the style 153 of a mushroom-shaped extension 140 is recordable, the head 154 of this approach being chamfered with recesses, similar to Fig. 11a, and so allows an impression, but a slide out prevented. As can be seen in FIG. 12, the disk 134 is thereby certain Game held. To despite the game against the force of the spring 52 with the approach 142 are pressed into the openings 157 of the flange of the spacer sleeve 132 to be able, the shoulder 142 of the disc 134 has slopes 83, so that one even with radial displacement due to the play the approach 142 safely through the Opening 157 and from there into an opening 44 of the cross member or Rear wall of the household machine to obtain a form-fitting fuse can impress when the screw bolt 24 is tightened.

The tail-shaped projection 150 aligns the spacer sleeve in the keyhole-like Breakthrough 28 correctly, so that the approach 142 over the opening 44th arrives, as already described above, whereby incorrect assembly also occurs this tail is prevented. By the spring device 82, which is made in one piece the plastic material of the spacer sleeve 132 is formed in the in FIG embodiment shown held the disc in the raised position. If, for example, during a first use of the spacer sleeve Fig. 12, the disc 134 is pressed against the force of the spring 82, and the arrangement is disassembled, the disk 134 arrives due to the spring force 82 back to the starting position shown in FIG. 12. The one shown in FIG Spacer sleeve can therefore be used several times. Another advantage is that at Transport of numerous such sleeves, as shown in Fig. 12, including screw 24 and washer 134, it is harmless when through mutual pressure of these sleeves, for example the disc 134 against the Spacer sleeve 132 is pressed: The subsequent removal then arrives but disc 134 in its starting position.

As can still be seen in FIG. 22, the sleeve 132 shown there has a Provide guide boss 29 for the coil spring 27, the length of the coil spring, Reference number 31, is slightly less than the block length of the spring.

In addition to or instead of the guide approach 29, one cannot do this either Arrangement or approach shown can be provided, which can be plastically deformed like. Such a plastically deformable approach could have a longer length have than it is indicated at 33.

24 shows an embodiment in a partially sectioned side view, at the form-locking device a spherical disk made of metal or Plastic 35 comprises, traverse or rear wall 114 have an opening 228 for the passage of the shaft of the bolt 24, and around this opening 228 around the wall material of the rear wall or the cross member 114 is dome-shaped sunk, see reference number 37, in such a way that the spherical disk 35 is positively incorporated therein, as can be clearly seen in FIG. 24. Likewise The shape of the end face of the spacer sleeve 332 can be seen, which is also one dome-shaped depression forms and thereby the dome-shaped material the rear wall 114 or the like.

The side 39 of the spherical disk 35 facing the spring 27 shows radially extending stiffening walls 41 on which the end surface of the spring 27 is placed may not be shown. To increase the strength of the arrangement and The spacer sleeve has a reduction in surface pressure on it dome-shaped end face an edge 43 enlarging the dome surface Sleeve edge 43 can extend between sleeve edge 43 and sleeve 332 Reinforcing ribs 45 may be provided.

The guide lug 129 which can be seen in FIG. 24 in turn has, as already with the 22 shown, an axial extension on the is usually slightly smaller than the block length of the spring 27, whereby this Extension from the reinforcing rib 41 is expected. In contrast to The embodiment according to FIG. 22, however, the approach 29 carries additional Latches 47 which hold the spring 27 in place in the position shown. This is particularly favorable in this embodiment because it is during the assembly and disassembly does not form a unit, as is the case with the embodiment 22 is the case. Rather, when assembling a washing machine before placing the rear wall 114, the spacer sleeve 332 on the dome-shaped depression region 37 of the rear wall 114, then on the opposite side of the rear wall 114, the disc 35 with attached Springs 27 put on, whereupon the bolt 24 with the washer 25 by spring 27, disc 35, rear wall 114 and sleeve 332 inserted and into the thread of the tub or the like is screwed in. In the same way with the two or three other corresponding devices according to the invention. Then the rear wall 114 or the cross member 114 on the Washing machine attached. Now the screw 24 is tightened so far that the Spring 27 by a certain amount, for example by a dimension of 3 to 4 mm, is squeezed. This means that later the transport movements Spacer sleeve 332 can plastically deform without the Overall arrangement game gets. The deformation range then corresponds again this travel of 3 to 4 mm. When tightening the screw 24 and Stronger tensioning of the spring 27 can be the transport securing device adjust expected loads.

If the machine is now stressed during transport such that the spacer 332 presses against the spring 27, this absorbs part of the energy generated and then releases it again. If additional absorber material is available, energy can also be destroyed.

If the machine is loaded laterally, the form fit of the arrangement according to the invention prevent a radial displacement between the spacer sleeve 332, the washer 35 and the bolt 24 on the one hand and the Rear wall or cross member 114, on the other hand, occurs even if the opening 228 is relatively large, for example has the shape of a keyhole, as in FIG. 2, or otherwise a shift is not prevented.

The advantage of the embodiment according to FIG. 24 is that the dome-shaped shape is relatively easy to manufacture and also a certain pivotability around the Spherical circle of the calotte is given. In principle, however, one is also possible Embodiment in which the positive locking device is a cylindrical or prismatic or other spherical shaped part made of metal or Plastic comprises, in which case the traverse or rear wall has a corresponding Breakthrough for the passage of at least the bolt shank, again around this opening, the wall material of the rear wall or traverse or Like. Such a cylindrical, prismatic or spherical segment-shaped Countersink forms that the molded part can be positively received therein. Accordingly, the end face of the rear wall or the like Spacer sleeve also a cylindrical or prismatic or also have spherical segment-shaped depression in which the correspondingly deformed Material of the rear wall or the like. Is accommodated appropriately.

Such prismatic or cylindrical deformations against an even higher one lateral holding force, but are more cumbersome to manufacture.

At the installation site, the safety device according to FIG. 24 is removed Unscrew and remove the bolt 24. The sleeve 332 then falls between Rear wall 114 and tub down and can be removed from there. The remaining parts are removed with the bolt 24.

Reuse is possible, but requires prior disassembly Rear wall, if not again a keyhole-shaped opening 228 (instead of round) as shown in Fig. 2 is used, but what u. U. To great weakening of material the back wall leads.

26 and 27 show a sleeve 432, in which the form-fitting device flat disc 434 in the region of the axially extending nose 440 one in axial opposite U-shaped hook 484 for receiving the Cross-section of a machine connection cable 411 forms, the free end of the U-shape of the U-shaped hook 484 ends approximately in the plane of the disk 434. As can be seen, the U-shaped hook is duplicated, and these two Hooks are arranged such that they have the axially extending nose 440 record between them. Furthermore, from FIG. 26 - is pulled apart Representation - and from Fig. 27 - a view after assembly of the individual components in a washing machine - to see that from the plastic Spacer 432 integrally going out "flags" or "leaf springs" 482 that join the free ends or also on the inner wall of the U-shaped hooks 484 and push them away from the sleeve 432.

This spring function has the advantage that before tightening or after loosening the Screw 24 the disc 434 at least on the side carrying the nose 440 removed from the sleeve 432 so that the nose 440 from the corresponding depression 441 in the laterally reinforced material 447 of the sleeve 432 is released, and so far that Crossbar 14 releases and so disassembly by moving the crossbar 14th with respect to the sleeve 234 becomes possible. Here too, an extension 429 holds a compression spring 427, with resilient projections 447 holding the end turns of this spring 427.

To ensure proper alignment of the nose 440 with respect to the depression 441 ensure, serves on the one hand through an opening 443 in the disc 434 protruding, from the sleeve 432 hook nose 445, the disc Holds 434 with play like clips, on the other hand side walls 409, from the end face 450 of the sleeve 432 in the area of the leaf springs 482 and a side Form a guide for the end of the disc 434 carrying the hooks 484.

Claims (16)

1. Device for securing the swinging system (12) of a domestic appliance (10), such as supporting the drum of a washing machine during transport, especially transport by rail, consisting of screw bolts (24) which can be screwed into bores in plastic parts of the swinging system (12) or in plastic projections which are rigidly joined thereto, the respective shank of which bolts is passed through openings (26; 28) in the rear machine wall (20) and the respective head (30) of which bolts abuts against a against the [sic] rear machine wall (20) or against stiffening sections or crosspieces (14) which are (optionally removably) fixed thereto, wherein a plastic spacer sleeve (32, 132, 232, 332, 432) which is penetrated by the shank of the screw bolt (24) is located between the inner face of the rear machine wall or of the stiffening section or of the crosspiece (14) and the swinging system (12), the device including, in addition to the spacer sleeve and the screw bolt, a positive locking device (34, 134, 234, 434) located between the bolt head (30) and the end face of the sleeve, characterised in that a coil pressure spring (27) is located between the bolt head (30) and the positive locking device (134, 234, 434) and the positive locking device (134, 234, 434) forms a guide projection (29, 129, 429) for the coil pressure spring.
2. Device as claimed in Claim 1, characterised in that a disc (25) is located between the coil spring (27) and the bolt head (30).
3. Device as claimed in Claim 1 or 2, characterised in that the guide projection (29, 129, 429) has an axial extent (33) which is slightly smaller than the solid length of the spring.
4. Device as claimed in Claim 1, 2 or 3, characterised in that additionally to or instead of the guide projection (29, 129, 429), a plastically deformable projection is provided.
5. Device as claimed in any one of Claims 1 to 4, wherein the positive locking device comprises a flat metal disc (434) which has on a peripheral region a lug (440) which extends axially away, with the rear wall or the crosspiece (14) or the like having an opening (28) for the bolt head (30) and the disc to pass through, from which opening at least one constricted area (76) proceeds in the direction of the axis of the crosspiece (14) and is able to receive the screw bolt shank cross-section and with a further opening (44) being provided at the end of the constricted area at a distance therefrom, such that it is able to receive the at least one lug (440) of the disc (434) when the threaded stud carrying the disc is in or at the end of the constricted area, characterised in that a radially opposite peripheral region of the flat disc (434) has a radial projection (442) with an opening (443) which is penetrated by a hooked lug (445) integrally proceeding from the spacer sleeve (432).
6. Device as claimed in Claim 5, characterised in that the flat metal disc (434) forming the positive locking device forms, in the area of the lug (440) which extends axially away, a U-shaped hook (484) attached in the axially opposite direction for receiving the cross-section of a machine connecting cable (411), the free end of the U ending approximately in the plane of the disc.
7. Device as claimed in Claim 6, characterised in that the U-shaped hook (484) is duplicated and the two hooks (482) receive between them the lug (440) which extends axially away.
8. Device as claimed in Claim 7, characterised in that leaf springs (482) integrally extend from the spacer sleeve (432), which springs rest against the free ends or the inner walls of the U-shaped hook (484) and force them away from the sleeve (432).
9. Device as claimed in any one of Claims 1 to 4, characterised in that the positive locking device comprises a dome-shaped metal or plastic disc (35), the crosspiece or rear wall (114) or the like has an opening (228) allowing at least the bolt shank to pass through, and around this opening (228) the material of the rear wall or the crosspiece (114) forms a dome-shaped depression (37) of such nature that the dome-shaped disc (35) can be positively received therein.
10. Device as claimed in Claim 9, characterised in that the end face of the spacer sleeve (332) which faces the rear wall or the like (114) likewise forms a dome-shaped depression in which the material of the rear wall (114) or the like which is formed into a dome shape can be received with a tight fit.
11. Device as claimed in Claim 9 or 10, characterised in that the side of the dome-shaped disc (35) which faces the spring forms radially oriented stiffening walls (39).
12. Device as claimed in Claim 9, 10 or 11, characterised in that the spacer sleeve (332) forms on its dome-shaped end face a rim (43) which enlarges the area of the dome.
13. Device as claimed in Claim 12, characterised in that radially oriented reinforcing ribs (45) are located between the sleeve rim (43) and the sleeve (332).
14. Device as claimed in any one of Claims 1 to 13, characterised in that the guide projection (129, 429) bears axially oriented snap-in lugs (47, 447) which hold the spring (27) in position.
15. Device as claimed in any one of Claims 1 to 4, characterised in that the positive locking device comprises a cylindrical or prismatic or spherical-segment-shaped component made of metal or plastic, the crosspiece or rear wall or the like has an opening to allow at least the bolt shank to pass through, and around this opening the material of the rear wall or crosspiece or the like forms a cylindrical, prismatic or spherical-segment-shaped depression in such a way that the component can be positively received therein.
16. Device as claimed in Claim 15, characterised in that the end face of the spacer sleeve which faces the rear wall or the like likewise forms a cylindrical, prismatic or spherical-segment-shaped depression in which the correspondingly formed material of the rear wall or the like can be received with a tight fit.

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