FI93167C - Dust bag for vacuum cleaner - Google Patents

Description

93167 Vacuum cleaner dust bag. - Dammpäse för dammsugare.

This invention, separated from FI application 892004, relates to a dust bag according to the preamble of claim 1.

Replacing a dust bag, including removing a full bag, requires some skill. The object of the invention is to improve the dust bag used in this type of vacuum cleaner in a technically simple manner in a practical manner, above all, so that the full dust bag can be removed neatly and comfortably.

The object is solved by an invention according to the characterizing part of claim 1.

The subclaim includes a preferred development of a dust bag according to the invention.

Thanks to the implementation according to the invention, the handling of dust bags of genre-type devices is considerably facilitated. Dust escaping from the bag and larger, heavier particles falling out are virtually completely prevented. The dustbag can even be replaced in the normal operating position of the vacuum cleaner. The treatment becomes optimal primarily because the sleeve-. the joint disengages itself when the pivoting movement of the intermediate bracket is interrupted as the chamber sleeve continues to pivot, and with the associated possibility of releasing the sleeve from its locking on the pivot shaft. As a result, the receiving chamber of the dust bag can be removed from the device in the blink of an eye. This not only has an installation technical advantage, but also a considerable benefit in use. For example, the chamber can be cleaned from time to time

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easily across the device regardless of it. Structurally, it is advantageous that the locking means consist of pins provided with opposite and outwardly spring springs, each of which has a beveled end of a locking tongue which acts 2 93167 together with the mating groove of the support pin of the shaft pin. This creates a secure, always removable plug connection. It is further preferred that the ends of the locking tongue are flattened and that the support lugs of the shaft pin have radial slits fitted to them. Flattening serves as a means of securing a mountainous connection. To ensure the correct position of the lock tongue head, the pins are always secured against rotation. The joining is facilitated by the fact that the radial gap widens outwards in a funnel-like manner. In addition, it turns out to be advantageous for the support pins of the shaft pin to have an intermediate bracket, which in turn is mounted concentrically with respect to the support lugs in the motor housing. In addition, it is proposed that there is an injection around the intermediate support, which forms a valve flap and a sealing strip crossing the air duct leading to the housing. The spraying is suitably soft for the purpose. On the other hand, it thus fulfills the function of a kind of edge pallet seal and at the same time forms a valve. Since the material forming the valve flap extends over the sleeve formed in the intermediate support, which is formed by the injection of the jacket surface, a flexible seal is also created in this area. The spraying further forms cams which adhere to the openings in the bottom of the dust bag, centering it. The precise attachment of the bottom of the dust bag to the edge of the sleeve is obtained simply by at least two cams on either side of the opening extending to the bottom of the dust bag. A specially shaped dust bag cannot. put upside down, it settles well into place by flexibly depressing, forms a long tight connection to the sleeve connection and can always be removed - even when completely full - without breaking the bag.

The invention will now be illustrated in more detail by means of an application example shown in the drawings.

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Figure 1 shows a further developed version of a vacuum cleaner, the pivot position of the chamber containing the dust bag is shown in dotted lines.

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Figure 2 shows the pivot point of this vacuum cleaner in the closed position, partially cut away.

Fig. 3 shows a section along the line III-III in Fig. 2, shown only in section,

Fig. 4 shows an enlarged view of the cam mounting of the right edge of Fig. 3 in more detail,

Fig. 5 shows a section similar to Fig. 2, but in the open position and in the vertical position of the intermediate support,

Figure 6 shows an enlargement of the sleeve area, with the valve flap formed by the injection,

Figure 7 is a plan view of Figure 5;

Fig. 8 shows a top view of the edge of the device on the pivot axis side,

Fig. 9 shows a section along the line IX-IX in Fig. 8,

Fig. 10 shows a section along the line X-X in Fig. 8, showing the locking joint position.

Fig. 11 shows the position of the pivot shaft in the situation according to Fig. 7,

Fig. 12 shows the removal position in which the sleeve must still be turned slightly outwards in order to lift the ends of the locking tongue so that the end goes in the same position as the radial slot,

Figure 13 shows the end of the pivot axis area, 4 93167

Fig. 14 is a perspective view of the dust bag, and

Fig. 15 shows a section along the line XV-XV in Fig. 7.

The vacuum cleaner shown is designed for manual use. It has a housing 1, which is connected to an upper arm 2 with a handle 3 at the end. In the transition area between the handle 3 and the arm 2, there is an operating switch 4. An electrical cable connection is not shown.

The housing 1 is divided into a motor housing 5 and a chamber 6 on top of it, in which the dust bag 7 is placed. The fan is also not shown in more detail in the drawing. The side of the motor housing 5 on the side of the dust bag 7 is in connection with the sleeve connection V to the air duct 8 of the fan.

Attached to the lower part of the motor housing 5 is a pipe switch 9, which creates an air flow connection to the suction nozzle 10. The suction nozzle 10 can be a so-called suction / brush nozzle, the nozzle mouth of which has a brush roller which is rotated by a separate drive.

The fan motor thus operates from the bottom upwards and thus pushes the dusty air above the motor housing 5 into an upside down dust bag 7.

The cross-section of the housing is in the shape of a long rectangle, the wide sides slightly convex, as well as narrow. Figure 1 shows the wide side of the vacuum cleaner.

The chamber into which the dust bag 7 of a corresponding size is inserted consists of a wadding-reinforced fabric bag 11, the lower part of which, i.e. the edge on the motor housing side, is reinforced with a chamber sleeve 12. The fabric bag 11 can be connected to this chamber sleeve 12 by a detachable coating. The joint area is bevelled for this purpose. The step is shown in Figure 1. The fabric bag can be connected to the inside or outside of approx. An inner joint is preferred.

To remove the dust bag 7, the housing 1 can be turned open to reveal its cross-section virtually completely. The open position is shown in Figures 1 (dotted lines) and 5, 7. The openable pivot shaft 14 is located on the other narrow side of the housing 1. The support lugs on the side of the chamber sleeve are denoted by the number 15. The support lugs are located in the transition area between the narrow side and the wide side of the chamber 6. Between each support lug 15 passes a support lug extending through the motor breakage housing 5.

In the region of the dividing line of the motor housing 5 and the chamber 6, there is also an integrated intermediate support T with a dust bag 7. The dust-bag intermediate support T has a cross-sectional shape of the housing but remains inside the housing so that it is not visible at all in the motor housing 5 and chamber 6 of Fig. 1. in a concentric position. Namely, the lower edge of the chamber sleeve 12 similarly covers the pivotable dust bag spacers T, except for the small part where it can be accessed, and the spacer T pivots on the same axis 14 as the dustbag chamber 6. The spacer T therefore forms on the hinge side two marked with reference number 16.

The dust bag 7 directly connected to the intermediate support T has a base plate 17. The shape of the dust bag also corresponds to the cross-sectional shape of the chamber sleeve 12, which forms a base plate 17 at the narrow sides of the inner wall to support the edge report 18. The base plate 17 does not slip into the open position 17 The bridge-like support, on the other hand, produces a certain bending capacity of the central region of the base plate. The common pivot axis 14 of the sleeve 12 and the intermediate support T is approximately at the height of the support edge 18 of the base plate 17. When the housing is closed (Fig. 2), the edge is on the base plate, so that this does not catch up when the vacuum cleaner is running with the blow. The lower edge of the base plate 17 is, as already mentioned, on top of the intermediate support T. On the narrow side of the base plate, a kind of fastening jaw fastening is thus formed by the sleeve 12 and the intermediate support T.

In the closed position, the displaced cylindrical end 8 'of the air duct 8 extends to the lower end of the sleeve 19. The sleeve 19 rises above the intermediate support T. It is molded onto the intermediate support and enters the dust bag 7 from an opening 20 of the same size in the base plate 17 of the dust bag, closing the edges.

To prevent the vacuumed dust from falling back into the motor housing 5 when the dust bag is upside down, a valve flap 21 is formed at the free end of the sleeve 19. It is substantially detached at the end edge of the sleeve 19, only attached at 22, so that it releases under airflow decreases. The valve flap 21 may be a separate component and the point 22 may be secured with a clamp; the alternative is, of course, to mold it from a corresponding, flexible material of the sleeve 19 or the intermediate support T, respectively.

The sleeve 19 tapers towards the free end so that its insertion into the opening 20 has a concentrating effect.

Figure 2 also shows that the end edge of the sleeve is sloping. It extends downwards in the direction of the pivot axis 14. The line thought to extend the edge intersects the pivot axis. The support lug 22 is at the top of the end edge.

. Otherwise, the sleeve 19 expediently extends radially with respect to the shaft 14. Between the root of the sleeve 19 and the area on the pivot axis side, the intermediate support T has a window-like opening. The frame branch on the hinge side is wider than the branches on the wide sides of the housing.

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A freely handled handle 24 is formed on the free end edge of the selector bracket T. It is a lower angle extension starting from an area which is deeper than the other end side 25. The corresponding branch is vertical. The associated, substantially horizontal branch runs back to the casing wall of the housing and joins its plane. There is a push-button locking hook (not shown) in the area of the handle, which ensures the closing of the housing. The engine housing 5 has a recess for the handle 24 in the corresponding area, denoted by the number 26.

Likewise, from the upper surface (according to Fig. 4) protruding cams 27 pointing upwards from the area of the longer frame branch of the selective carrier close the gripping openings 28 on the long sides of the dustbag base plate 17. When the housing 1 is open, the dust bag can be comfortably and easily lifted from the chamber 6 by gripping the wasp-waist-tapered center of the base 7. In addition, the intermediate bag support T of the dust bag is further arranged and formed so that it pivots only at a limited angle, i.e. thus it does not reach the 180 ° angle of the chamber sleeve 12, but remains in a position approximately vertical E-E or slightly above the sleeve joint cross-sectional plane, so that the sleeve joint V is already on the other side of the 180 ° angle bisector of the largest possible swivel range. In this position, the dust bag 7 has enough space to exit the spacer carrier T. The transition from the upside-down position to the one in which the opening 20 points upwards takes place without leaving dust or larger particles the opportunity to leave the bag. The dust bag can therefore be detached from the chamber 6 as described above or alternatively. easily removed after removal and removal. Pussin • .. ..

the wall is not gripped. It does not need to be touched, so it is not possible for the contents of the bag to pop out. If the bag is extended, a suction effect may occur. Putting a new bag is just as easy, as the chamber 6 is completely open upwards.

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The chamber is only turned back to the position illustrated by the solid line in Fig. 1, in which the superstructure of the housing 1 on the motor housing 5 automatically locks around the chamber 6. On this return journey, the opening 20 goes into the sleeve 19 or vice versa. This can take place possibly in the vertical position of the spacer T, which is maintained due to friction, or only when it is on the motor housing 5. In the closed position, the cams 27 again fill the gripping openings 28, i.e. so well that the bulging dust bag or the filling of the bag does not cause the bulging paper filter wall 31 to bulge.

In order to enlarge the opposite gripping openings 28, the region 12 'of the inner wall of the chamber sleeve 12 has recesses.

In order to place the dust bag 7 in a safe place, its base plate 17 has orientation marks 32 on its narrow sides, which engage with suitable counter-marks 33 on the inner wall of the chamber sleeve 12. The orientation marks are trapezoidal projections on the narrow side of the base-shaped body 17. The opening 20 and the sleeve 19 thus go into the correct positions, and their incorrect positions are not noticed until the parts of the housing do not engage properly when the housing is closed. The long sides 21 'of the cams 27 facing each other are rounded obliquely, which also helps to get the base plate 17 into the correct position. The cams act as guide surfaces on the corresponding rounded bottoms of the recesses 28. In addition, tongues 32a, 32b and 32c are arranged angularly symmetrically with respect to the opening 20. The tabs 32b and 32c on the side fall obliquely into the gripping openings. On top of them is a foam plastic Sch., Which forms an opening 20 in the sealing ring. The edge folds K of the wall (paper) against the underside of the bottom plate 17 of the dust bag intersect the gripping openings and the tongues 32b and 32c extend further beyond them.

The chamber or chamber sleeve 12, respectively, can be removed

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93167 9 from the locking shaft 14. The chamber 6 containing the dust bag 7 can thus be conveniently carried in a rubbish bin or the like. In addition, the chamber and the cotton basket-reinforced cloth bag 1 can be cleaned from time to time, regardless of the entire device.

The attachment point on the chamber sleeve 12 side is a projection 12 'extending in the region of the shaft 14 and extending substantially in alignment with the support lug 15 of the housing and the support lug 16 of the shaft pin of the intermediate support T. The locking means consist of pins 50 sprung against each other and outwards. They protrude from the end of the projection 12 '. The protruding end is formed obliquely as the end of the locking tongue 51. The chamfer is marked with the number 52. The ends 51 are flattened and act together with the support lugs 16 of the shaft pin of the intermediate spacers T in front. The support lugs 16 each have an outwardly open radial slot 53. The radial slot 53 widens outwards in a funnel-like manner. The funnel-shaped shape promotes centering on the centerline of the shaft, but on the other hand forms a side 54 corresponding to the bevel angle of the bevel 52. Its other end continues as a stop shoulder 55 transverse to it, to which the back of the bevel 52 engages. The stop shoulder 55 is part of the wall of the cavity 56 for the locking tongue 51 of the shaft pin support lugs 16. The narrowest point of the radial slot 53 is as wide as the flattened end 51.

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The locking can only be opened in the open position of the chamber sleeve 12 and with the intermediate bracket T against the housing. In this case, the ends of the locking tongue are in the unlocking position shown in Fig. 12. The sleeve must still be turned slightly in this position, because a small part of the head 51 Once the open position has been reached, all you have to do is lift the sleeve. In this position, the upwardly facing chamfer 52 then passes over the locking shoulder 55. When locked, the side 54 of the radial slot 53 proves to be serviceable. It guides the ends 51 back into place against the force of the compression springs 57 loading the pins 55.

The compression spring 57 is a helical compression spring.

The pins 50 are secured against rotation. They have longitudinal ribs 58 which engage the respective grooves 59 of the projections 12 '. The inwardly facing ends of the pins 50 have abutments so that the pins do not jump out of their housing due to the pressure exerted by the springs.

In all the same angular positions, the ends 51 of the locking tongue are in a closing position relative to the support lugs 16 of the shaft pin.

Figures 10 to 12 show another embodiment of a stop limiting the pivoting movement of the intermediate support T, in which the radial abutment cam 60 of the support pins 16 of the shaft pin strikes the shoulder 61 of the housing.

The actual shaft 14 consists of shaft sections 14 'formed at the end of the cavity 56 on the locking tongue 51 of the shaft lugs 16. They extend into the corresponding cavities of the support lugs 15 in the housing.

: · The intermediate support T has been developed according to Fig. 7 so that it is provided with a surrounding injection U, which is a slightly softer material than the intermediate support T. The injection extends at least to the edges, so that not only the narrow end side is covered but also the top and bottom. This softly flexible material thus creates an edge seal against the bottom 17 of the dust bag and the lid of the motor housing 5. The injection U is also pulled into the area of the sleeve 19 of the intermediate support T so that it surrounds the sleeve like a jacket. Half-exchange intermediate support T occurs on the sleeve 19 at the foot strip with edge perforations.

The openings are indicated by the number 63 in Figures 5 and 6. At the base of the sleeve 19 ♦ 1 1 93167, on the side of the fan air duct 8, the injection U forms a sealing rib 64 extending into the stepped air duct. The sealing bed 64 tapers on the channel side funnel-shaped.

The injection U further forms the cams 27 described above, which extend into the gripping openings 28 of the bottom plate 17 of the dust bag. At the same time, the relatively soft material is flexible enough so that a too rigid connection does not occur. The cams 27 are formed by bent walls of spray material (rubber or plastic) which curve in the longitudinal direction or terminate in curved parts, so that the desired holding capacity is created despite the softness of the material.

The bottom side edge of the dust bag 12 of the chamber sleeve becomes sharper to improve tightness (Figure 4).

In addition, at least two cams 65 on both sides of the opening 20 are gripped by the bottom plate 17 of the dust bag. The extent of grip is small, as shown in Fig. 15, so that the dust bag 7 can be released by pulling from the bottom.

There are no injection points only in the steps forming on the shaft pin support lugs 16 and at the handle 25.

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At the edge of the opening 20 of the base plate 17 on the support side there is a lining consisting of a flexible layer 66. It extends around the opening 20 to the edges of the bottom. It can be, for example, cellular plastic.

:. The injection U also forms the valve flap 21. This is a cover covering the mouth of the sleeve, which, with the exception of the hinge point 22, is loose.

All the new features mentioned in the description and shown in the drawing are essential to the invention, even if they are not * explicitly stated in the claims.

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Claims (2)

93167 1 2 A dust bag (7) mountable by a sleeve connection (V) to a vacuum cleaner, the dust bag having a base plate (17) having two side edge gripping openings (28) coated with foam in the region of the connection opening (20) of the sleeve connection (V) and its surface shape corresponds approximately to the cross-section of the vacuum cleaner chamber sleeve (12) and the dustbag wall is glued to its lower surface so that the dustbag wall changes to a side wall through the pleat edge (K), the pleat edge (K) intersecting the gripping openings (28) approximately projections in the vicinity of supporting the base plate (17) to an edge step (18) of the chamber sleeve (12) having a tab (32a) on the narrow side of the base plate (17) between the protrusions, characterized in that said protrusions are formed as tongues (32b). , 32c) and, located in an angle-symmetrical order with respect to the connecting opening (20), form a las protruding outwards from the kos edge (K), the projections of this pleated edge (K) and the edge of the open ring zone (20a) in the foam cover (Sch) form an open connection opening (20). Dust bag according to Claim 1, characterized in that the tongues (32b, 32c) run directly through the oblique sides (Sch) into the gripping openings (28). • · «il ls 95167