Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
  • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations

Definitions

• the invention relates to a washing machine according to the preamble of claim 1.
• the tub of the washing machine within which rotates the washing drum, provided with balancing weights. These can be attached via screw to the tub.
• a screw can be used between the screw head and screw shaft an approximately rectangular safety collar is provided.
• the safety collar of the screw is in one corresponding passage opening of a locking plate used, which in turn is arranged against rotation of the balance weight.
• a special trained with the safety collar screw and a backup plate are required. The assembly or component cost of rotation of the screw is therefore correspondingly large.
• the object of the invention is to provide a washing machine in which the balance weight is attached to the tub with a reduced number of components.
• At least one of the end-side clamping elements is formed as a spiked disc having at least one spike-like projection.
• An additional locking plate with associated securing collar of the screw can thus be omitted in terms of simplification of assembly and component reduction.
• a plurality of mandrel-like projections is provided.
• the two end clamping elements can be a threaded nut and / or a screw head in the context of the invention.
• the clamping element may also be a washer, which is pressed by means of the threaded nut or the screw head against the mounting portion of the tub.
• the spiked disc according to the invention can be designed as a spigot nut which can be screwed to the screw element.
• the thorns mother is adapted regardless of the screw used according to the invention, while the screw can be conventionally, without additional anti-rotation elements, formed.
• the thorns disc may be a deep-drawn sheet metal part, for example, from a spring-hardened stainless steel sheet, whereby the thorns disc manufacturing technology is easy to manufacture.
• the spiked disc can also be designed as a screw head of the screw.
• the thorn-like projections of the screw can also be designed as a screw head of the screw.
• Screw element The screw serves in double function both for
• Projections are in this case arranged on the underside of the screw head facing the tub attachment section.
• the spiked disc may be a washer associated with the screw head of the screw member.
• the washer is designed so that it is rotatably connected to the screw head.
• the washer may have a recess whose inner contour is adapted to the outer contour of the screw head (eg a hexagonal inner contour). When fastened, the screw head is in positive engagement with the inner contour of the recess of the washer, as a result of which the screw can not rotate relative to the washer.
• the at least one thorn-like projection of the spiked disc may have a rounded spike, which may result in a not yet tightened pre-assembly of the screw following advantages:
• the spiked disc with its thorn-like projection is still in loose contact with the tub - Attachment section. Due to the rounded tip of the spike-like projection, the spiked disc can be easily moved along the attachment portion. Such a displacement would be in an edged or tapered spike tip lead to a "hooking" of the thorn-like projection in the attachment portion and thus to a stiff sliding movement.
• the spiked disc can have a polygonal circumferential profile with an even number of edges.
• the spiked disc may have at least one pair of opposing, parallel side surfaces for further simplicity.
• the side surfaces of the spiked disc serve in a dual function both as a tool approach and as lateral stops for further rotation of the spiked disc.
• the spiked disc according to the invention can be assigned at least one rotational stop formed on the fastening section, which guarantees the rotational security of the screw connection in addition to the at least one thorn-like projection of the spiked disc.
• the rotational stop formed on the fastening section can have two mutually parallel, opposite side walls. Between these side walls then the thorns disc can be arranged against rotation with their lateral abutment surfaces.
• the spiked disc may have an inner screw-fastener section and an outer plate-shaped abutment section press-fitted with the tub-mounting section. At least one thorn-like projection is provided on the plate-shaped contact section.
• the inner screw-mounting portion is in fixed state of the balance weight in fixed engagement with the screw.
• the screw element fastening section can be a receiving thread, into which the screw is screwed.
• the screw is associated with an additional biasing element.
• the biasing member maintains a permanent bias between the chucking elements and the balance weight or the tub attachment portion upright, even if by the Washing machine operation caused strong dynamic stresses of the screw and in retardation or plastic or entropy-plastic deformations, as they can occur under long-term stress, in particular on a tub made of plastic tub attachment portion and / or other, the screw directly associated (plastic) parts.
• the biasing member may be integrated according to the invention in the thorns disc.
• the biasing member is a plate-like spring portion which is provided between the inner screw member mounting portion and the outer plate-shaped abutment portion of the spiked disc.
• the plate-like spring portion may be formed as a cone portion.
• a receiving thread for the screw can be provided in the inner fferelement- attachment portion.
• the receiving thread can be provided in a central bottom region of the spiked disc.
• the inner fferelement- attachment portion having a threaded sleeve, on the inside of the receiving thread is provided.
• the threaded sleeve can in this case be provided on the side facing away from the thorn-like projections side of the mandrel disc. Likewise, the threaded sleeve can also be provided on the thorn-like projections facing side of the spiked disc. With a suitable length, the threaded sleeve can be guided together with the threaded shaft through the attachment portion of the tub here. The threaded shaft of the screw is therefore not in direct contact with the tub attachment portion, but only the smooth outside of the threaded sleeve of the spiked disc.
• the inner screw-element fastening section can be connected in a rotationally fixed manner to the screw element, in particular integrally connected thereto.
• the tub attachment section may include a laterally open insertion slot through which the screw member projects. With loosely screwed clamping elements, therefore, one of the clamping elements can be inserted into the laterally open insertion slot and displaced therein into a predetermined final fastening position.
• the attachment portion of the tub can also form a guide channel.
• the insertion slot may open into the guide channel and extend in the longitudinal direction thereof.
• the attachment portion is formed of the same material and integral with the tub.
• the tub and / or the attachment portion can be manufactured advantageously made of plastic manufacturing technology.
• a screw of the screw connection according to the invention can first be performed by the balance weight.
• the guided by the balance weight screw end can then be screwed loosely with an end-side clamping element.
• the end-side clamping element is the spike washer according to the invention.
• the loosely screwed, end clamping element can then be inserted into the guide channel of the tub attachment section.
• the balance weight can be moved for position adjustment with the loosely screwed clamping element along the guide channel; and in a correct position arrangement of the balance weight, the screw can be tightened in its final mounting position.
• FIG. 1 Show it: Fig. 1 according to the first embodiment in a schematic
• FIG. 3 is a perspective view of a threaded nut used for the screw connection
• FIG. 4 shows a threaded nut designed as a spine disc according to the second embodiment
• Figure 5 is a threaded nut designed as a spine disc according to the third embodiment.
• FIG. 6 shows a screw head designed as a spine disc according to the fourth embodiment.
• Fig. 7 is a washer designed as a washer disc according to the fifth embodiment.
• Fig. 1 a partial area of a tub 1 a washing machine and a top side attached to the tub 1 balance weight 3 is shown in a schematic side view, which ensures an unbalance washing operation.
• the elongated balance weight 3 extends transversely to a central axis, not shown, of the hollow cylindrical tub 1 and is at its two opposite ends on support hollow sections 5 of the tub 1.
• the balance weight 3 is mounted at its longitudinal ends in each case via a screw connection 7 on the associated hollow support profile 5 of the tub 1.
• the balance weight 3 is made of a cast material, such as cast iron or concrete, or other suitable material.
• the tub 1 is a plastic injection molded part.
• the hollow support profile 5 is integrally formed integrally on the tub 1 in manufacturing technology simple manner.
• the screw 7 is formed in three parts, with a screw 9 or a screw, a washer 11 and a threaded nut designed as a thorn-disc 13.
• the screw 7 is in Fig. 2 in the assembly position of the balance weight. 3 and the tub 1 shown.
• the screw 9 is guided with its threaded shaft 15 through a mounting hole 17 of the balance weight 3.
• the screw head 19 is supported on the washer 11 on a side facing away from the tub 1 contact surface 21 of the balance weight 3.
• the contact surface 21 is here the bottom of a conically widened countersunk hole 23.
• the insertion channel 25 extends perpendicular to the plane of FIG. 2 and is connected by two side walls 27 and by one, the two side walls 27, upper top wall 29 limited.
• the upper top wall 29 is a mounting portion of the tub 1.
• This mounting portion 29 and the balance weight 3 are clamped as shown in FIGS. 1 and 2 between the screw head 19 and the mandrel plate 13, which are the end clamping elements of the screw 7.
• a narrow insertion slot 31 is provided for this purpose, which extends along the guide channel 25 and through which the threaded shaft 15 protrudes.
• the insertion slot 31 is open at the side and opens into the guide channel 25.
• the designed as a threaded nut mandrel disc 13 is screwed within the guide channel 25 with the lower in Fig. 2 end of the threaded shaft 15. The spiked disc 13 thus engages behind the top wall 29. In the assembly position shown, therefore, the balance weight 2 and the top wall 29 of the tub 1 between the screw head 19 and the spiked disc 13 is clamped.
• the thorn washer 13 designed as a threaded nut is shown in detail in FIG. 3 in an enlarged perspective view.
• the threaded nut 13 is made of a spring-hardened stainless steel sheet having a material thickness a of about 1 mm.
• the spiked disc 13 has an inner screw-fastening section 32.
• the inner fferelement- attachment portion 32 is here provided with an internal thread 33, with which the end of the shank 15 of the screw 9 is screwed.
• the screw-element fastening section 32 of the spiked disc 13 has a centrally arranged threaded sleeve 35, in which the internal thread 33 is provided.
• a threaded sleeve 35 is followed in the direction of the outer contour of the mandrel plate 13 towards a cone portion, which forms a plate-like spring portion 37 (in the manner of a plate spring).
• the spring section 37 merges integrally into a plate-shaped, planar bearing section 39 extending in the radial direction of the spiked disc 13.
• the abutment portion 39 has a uniform octagonal outer contour with respective opposite pairs of mutually parallel side surfaces or abutment surfaces 41. In its installation position, the spiked disc 13 presses against the top wall 29 with the lower surface of the abutment section 39 in FIG. 3.
• a permanently rotationally tight seat designed as a threaded mandrel thorns 13 is for the reliability of great importance.
• protrusions 43 with rounded mandrel tips are provided on the side of the spiked disc 13 facing the top wall 29.
• the thorn-like projections 43 are on the side facing away from the threaded sleeve 35 of the mandrel plate 13 and extend in a direction parallel to the longitudinal direction of the threaded shaft 15 or substantially parallel direction. In the attached state of the balance weight 3, the thorn-like projections 43 are pressed by the clamping forces of the screw in the clamping direction in the plastic material of the top wall 29.
• the distance b between two opposite lateral abutment surfaces 41 shown in FIG. 3 is dimensioned so that each of the opposing abutment surfaces 41 with little play c the facing side wall 27 of the tub support hollow profile. 5 opposite (see Fig. 2).
• the two side walls 27 of the hollow support profile 5 therefore act as a rotation stop, which additionally limits a rotational movement of the spiked disc 13.
• the screw 9 For fastening the balance weight 3 with the tub 1, first the screw 9 is guided by the side facing away from the tub 1 side of the balance weight 3 through the mounting hole 17. Subsequently, the spiked disc 13 is screwed loosely to the lower end of the shank 15 in FIG. This loose screw can still be done independently of the tub 1. Subsequently, to connect the balance weight 3 with the tub 1, the loosely connected to the screw 9 thorn plate 13 is inserted into the laterally open guide channel 25 of the tub 1. The threaded shaft 15 of the screw 9 now protrudes through the insertion slot 31, while the top wall 29 is disposed between the threaded nut 13 and the balance weight 3. In this state, the loosely screwed spike washer 13 along the guide channel 25 and the screw 9 along the insertion slot 31 can be moved to a positionally correct or final mounting position.
• the screw 7 is clamped on a tool attached to the screw head 19 tool.
• the spiked disc 13 is held against rotation by its lateral stop surfaces 41 between the two side walls 27.
• the stop surfaces 41 of the spiked disc 13 and the side walls 27 c and due to the rounded projections 43 ensures that with loosely screwed spikes disc 13 a smooth movement of the spiked disc 13 within the guide channel 25 possible is.
• the spiked disc 13 is shown according to the second embodiment.
• the basic structure and operation of the spiked disc 13 shown in Fig. 4 corresponds to the structure and operation of the
• the receiving screw 33 is provided for the screw 9 in the inner screw member mounting portion 32 of the spiked disc 13 also.
• the receiving thread 33 is not provided within the threaded sleeve 35, but rather in a central bottom portion 45.
• the central bottom portion 45 passes over the plate-like spring portion 37 in the outer plate-shaped abutment portion 39 of the spiked disc over.
• the upper side of the contact area 39 in turn, the rounded thorn-like projections 43 are provided.
• the spiked disc 13 is shown according to the third embodiment.
• the thorn-disc of FIG. 5 has - as in the first embodiment - a central threaded sleeve 35, at whose in Fig. 5 lower end portion of the plate-like spring portion 37 connects, which merges into the outer plate-shaped abutment portion 39.
• the threaded sleeve 35 is not provided on the, the thorn-like projections 43 facing away from the thorn-disc 13, but rather on the thorn-like projections 43 facing side. In the direction indicated in Fig.
• this spiked disc 13 is therefore particularly suitable for a very flat guide channel.
• the threaded sleeve 35 is guided together with the threaded shaft 15 screwed therein through the insertion slot 31 of the top wall 29 of the hollow support profile 5.
• the edges of the insertion slot 31 are therefore not directly in contact with the threaded shaft 15 of the screw 9. Rather, the smooth outside of the threaded sleeve 35 advantageously comes into contact with the edges of the insertion slot 31, whereby a smooth displacement of the threaded shaft 15 takes place within the insertion slot 31.
• the spiked disc 13 is shown according to the fourth embodiment.
• the spiked disc 13 is integrally formed with the screw 9 as the screw head.
• the spiked disc 13 accordingly has a central head section 47.
• the plate-like spring portion 37 connects radially outwardly, which merges into the contact portion 39.
• the screw 9 is associated with a conventional washer 11 and a conventional threaded nut 49, which is screwed for clamping the top wall 29 and the balance weight 3 with the upper end of the shaft 15 in FIG. In the fixed state of the balance weight 3 is supported in the variant of FIG.
• the screw connection 7 according to the fifth embodiment is also shown in an exploded view.
• the spiked disc 13 is formed here as a washer of the screw head 19.
• the spiked disc 13 in this case has a central indentation 51, the inner contour of the outer contour of the screw head 19 is adapted in a form-fitting manner.
• the plate-like spring portion 37 connects, which merges again into the radially extending, plate-shaped abutment portion 39.
• the thorn-like projections 43 are arranged.
• the end of the threaded shaft 15 of the screw 9 is also bolted to a conventional threaded nut 49.
• the spiked disc 13 is arranged together with the arranged in its indentation 51 screw head 19 in the guide channel 25.
• the spiked disc 13 sits with its, pressed into the plastic material of the top wall 13 projections 43 rotatably on the top wall 29. Consequently, due to the positive connection between the outer contour of the screw head 19 and the inner contour of the recess 51 of the screw head 19 rotatably with the thorn Disc 13 in connection.

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• 2007
  • 2007-09-04 ES ES200702429A patent/ES2335954B1/es not_active Expired - Fee Related
• 2008
  • 2008-09-02 WO PCT/EP2008/061535 patent/WO2009030677A1/fr active Application Filing
  • 2008-09-02 AT AT08803508T patent/ATE493534T1/de active
  • 2008-09-02 EP EP08803508A patent/EP2195480B1/fr active Active
  • 2008-09-02 EA EA201070322A patent/EA016119B1/ru not_active IP Right Cessation
  • 2008-09-02 DE DE502008002178T patent/DE502008002178D1/de active Active
  • 2008-09-02 US US12/673,787 patent/US20110067459A1/en not_active Abandoned
  • 2008-09-02 CN CN2008801056609A patent/CN101796239B/zh active Active

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