DD297199A5 - DRUM WASHING MACHINE - Google Patents

Abstract

In a star-shaped supporting frame for a horizontally mounted laundry drum, one of the arms (4) of the supporting frame serves as a fastening bearing for the drum drive motor (10). For this, an oscillating arm (8) is connected to the motor bearing plate (9) located on the drive side, is mounted in an oscillatory manner on the arm of the supporting frame and is fastened via a screw fastening (11) to the motor bearing plate located on the drive side, in an arcuate long hole (7) on the arm of the supporting frame. To make it easier to mount a drive motor in the way described, it is proposed that the motor bearing plate with its screw fastening should engage from one side of the arm of the supporting frame and the oscillating arm engage from the other side. <IMAGE>

Description

For this 2 pages drawings

The invention relates to a drum washing machine with a in a star-shaped support frame about a horizontal Axis rotatably mounted laundry drum, which via a transmission of a fixed to an arm of the support frame motor

can be driven, which is connected via a connected to the drive-side motor end shield swing arm to a

Swing bearing eye of the support arm arm mounted in Gronzen swinging and a Schraubbefestigung am

Drive-side motor end shield is mounted in an arcuate slot on the support arm.

Such a drum washing machine is known from DE-OS 3132211. Opposite an attachment of the drive motor

About welded to the tub of a washing machine angle plates, this solution has advantages in terms of

Transmission and propagation of noise that the drive motor necessarily causes. Besides, this one is Solution compared to other types of fastening with multiple auxiliary components rational. However, this fastening solution presents

high demands on the screws to be used for fastening the drive motor. Since the engine belongs to the oscillating unit of a drum washing machine and has a comparatively high mass, the load

Acceleration forces change the screw heads significantly. Similar high loads also occur Transport shocks acting in the direction of the drum axis of the washing machine. Shocks acting transverse to the drum axis

load the screws by shear forces.

The invention has for its object to make the mounting area in the known drum washing machine so

that the aforementioned loads do not concern the screw heads, but the castings (support arm and motor end shield).

According to the invention, this object is achieved in that the motor end shield with its screw fastening of the one Side of the support arm arm ago and the swing arm attacks from the other side. This will be the load forces

collected during spin and during transport at least in part of the said castings and relieve the

Screw heads to a considerable extent. For this purpose, it is of particular advantage that either the attachment region of Traggestnll arm between the Swing bearing eye and the slot is cranked or that the swing arm between the screw and the Swing bearing is cranked. Both features can also be used in combination; In any case, this results in the

desired support of the T'ag elements (arm of the support frame, engine bearing, swing arm ¹ directly and without

Stress on the fastening screws. If according to a further advantageous embodiment of the swing bearing from a bushing inserted into the bearing eye

and a pin attached to the swing arm, there is a special Montagevareinfachung characterized in that the

Motor can be hung with his swing arm pin in the swing bearing and not in the further assembly

must be held.

A special rational representation of this solution results for a pin, the integral part of the swing arm In another advantageous embodiment of the bearing pin consists of a screw which don the swing arm and Carrier arm penetrates. It can be screwed together with a nut screwed onto the threaded pin

ensure the secure mounting of the engine. This is especially important if any! For reasons of fastening safety of the drive motor by a single screw alone - namely the

Screw mounting on the motor end shield - can not be trusted. In the case of attachment of the drive motor by means of two screws, as described above, a development of Invention particularly advantageous in which the support frame arm has a guide finger below its slot, in Mounting position of the motor supports the drive-side motor end shield far from the screw fastening. This results

during assembly of the attached to the support arm arm drive its automatic support on a stable

Forces triangle formed by the support surface In the area of the slot and the bearing surface between the guide finger

and the drive shaft of the motor comprehensive end face of the motor end shield.

Reference to exemplary embodiments illustrated in the drawing, the invention is explained below. Show it

Fig. 1: a view from the rear of the tub of a drum washing machine with support frame and drive motor, Fig. 2: an approximately horizontal section through the motor bearing plate and along the center line of its swing arm

and by the foot-like extension of the Traggostell arm, Fig. 3: a fragmentary view of another embodiment for the attachment of the drive motor on

Support arm with guide finger and Figure 4: a section along the arcuate section line IV-IV in Figure 3.

The tub 1 a washing machine is usually mounted in a star-shaped support frame 2, in the hub 3 in a manner not shown here, the bearing journal of a laundry drum is rotatably mounted. According to the prior art described in the introduction, a foot-like extension 5, which projects beyond the outer contour of the tub 1, is attached to one of the downwardly directed arms of the support frame 2, namely the arm 4. The foot-like extension 5 has two attachment points, a swing bearing eye 6 and a curved slot 7. In the swing bearing eye 6, the pin of a swing arm 8 is mounted, which is an integral part of the drive side bearing plate 9 of the drive motor 10. In the bearing plate 9 is a mounting hole 11 with thread into which a slot 7 penetrating screw (not shown) can be screwed. By means of the slot 7, the motor 10 can pivot about the swing bearing eye 6, so that a belt (not shown), which wraps around the drive pinion 12 of the motor 10, can be tensioned.

According to the invention, the motor-bearing plate 9 is in the region of the slot 7 bearing end of the foot-like extension 5 from behind the support arm 4, while the swing arm 8 of the l.agerschilds 9 around the foot-like extension 5 engages around and from the front Side of the support arm 4 attacks ago. As a result, the engine Lagorschild 9 forms with his swing arm 8, so to speak, a foot-like extension 5 encompassing clasp. These spatial relationships are better illustrated by the section shown in Fig. 2. Therein, the swing arm 8 is integrally connected to a bearing pin 13, which is directed from the back of the tub ago forward and engages in the bearing eye 6. For better damping of noise transmissions, the bearing eye 6 is also reinforced with a rubber-metal bushing 14, the inner metal bushing with the pin 13 has a sliding fit. Instead of the fixedly cast spigot 13, the swinging arm 8 at this point can have an inserted screw with a threadless sliding shaft which can be secured from the front side of the support arm 4 with a nut. Correspondingly, a screw is also provided for attachment of the elongated hole 7 bearing end of the foot-like extension 5 in the screw thread 11 of the motor bearing plate 9. In the embodiment shown in FIG. 3, the end of the foot-like extension 5 containing the oblong hole 7 still carries a guide finger 15. This guide finger 15 extends to the front of the annular area of the endshield, through which the motor shaft 16 with its front-mounted pinion 12 follows protrudes on the outside. The section shown in Figure 4 along the oscillating arc line IV-IV is rotated by 90 ° with respect to FIG. 3, so that the upper part of Fig. 3 in Figure 4 is right. For better clarification dor spatial relationships of the guide finger 15 and the motor shaft 16 which is located in front of the section line motor shaft 16 with pinion 12 in Fig. 4 is also shown. It can be seen that in the position shown in the drawn position on the foot-like extension 5 motor with its motor-bearing plate 9 rests on the front surfaces 17 in the region of the slot 7 and 18 in the region of the guide finger 15 and thus can assume a stable position without being held until the screw, not shown, is screwed through the slot 7 into the thread 11. The distance of the motor shaft 16 wrapped around ring surface of the bearing plate 9 to the front surface 18 of the guide finger 15 is intended to illustrate that this annular surface is to rest as closely as possible on the front surface 18 of the guide finger 15, but in no case a greater distance from the front support surface of the Neck for the thread 11 may have, as the distance between the surfaces 17 and 18 on the foot-shaped extension 5 is.

In the illustrated embodiments, both the foot-like extension 5 as well as the swing arm 8 are cranked so that the contact surfaces are changed at the swing bearing eye and on the screw each. However, this spatial arrangement is also achieved by either only the foot-like extension 5 or only the swing arm 8 is cranked accordingly. The guide finger 15 may also have a different shape and / or attack at a different location of the motor bearing plate 9.

The inventive design of the motor mounting prevents excessive loads on the screw heads in shocks to the oscillating unit. Collisions from the front are partially absorbed by the pin attachment of the swing arm 8, while shocks are absorbed from behind on the oscillating unit by the contact surfaces between the motor-bearing plate 9 and the foot-like extension 5. The illustrated in Fig. 2 rubber-metal socket attenuates transmissions generated by the drive motor 10 vibrations on the unit. By trained according to FIG. 2 Schwingarmzapfen an additional simplification of the assembly is given because only one screw must be tightened to secure the engine.

Claims (7)

1. drum washing machine with a rotatably mounted in a star-shaped support frame about a horizontal axis laundry drum which is drivable via oin gear by a motor attached to one arm of the support frame, which connected via a connected to the drive-side motor end shield swing arm to a swing bearing eye of the support frame Arms mounted within limits schwingbeweglich and fastened by a SchraubbefesMgung on antriobsseitigen engine-end shield in an arcuate slot on the support arm, characterized in that the engine lgerschlld (9) with its Schraubbefestigung (7,11) from one side ( 17) of the support arm {4,5) forth and the swing arm (8) attacks from the other side. 2. drum washing machine according to claim 1, characterized in that the Bofestigungsbereich (5) of the support frame arm (4,5) between the swing bearing eye (6) and the slot (7) is cranked. 3. drum washing machine according to claim 1 or 2, characterized in that ichnet that the swing arm (8) between the screw fastening (7,11) and the oscillating bearing (6,13) is cranked. 4. drum washing machine according to one of claims 1 to 3, characterized in that the oscillating bearing (6,13) consists of a in the bearing eye (6) inserted bushing (14) and a on the swing arm (8) mounted pin (13). 5. drum washing machine according to claim 4, characterized in that the pin (13) is an integral part of the swing arm (8). 6. drum washing machine according to one of claims 1 to 4, characterized in that the bearing pin (13) consists of a screw which penetrates the swing arm (8) and the supporting frame arm (4,5). 7. drum washing machine according to one of the preceding claims, characterized in that the carrier arm (4,5) below its oblong hole (7) has a guide finger (15) in the mounting position of the motor (10) the drive-side motor bearing plate (9) remote from the screw fastening (7,11) is supported.