Dust filter bag intake chamber for a vacuum cleaner and dust filter bags for arrangement in the dust filter bag intake chamber

Abstract

Dust filter bag receiving chamber (3) of a vacuum cleaner (1), with a holder (29) for a retaining plate (11) of a dust filter bag (10), wherein the retaining plate (11) can be snapped into place by means of a locking finger (32) which can be deflected against spring force, wherein a removal handle (20) is attached to the retaining plate (11), wherein pulling on the removal handle (20) causes the locking finger (32) to be released, characterized in that when the dust filter bag (10) is inserted the removal handle (20) is deflected by the locking finger (32).

Description

[0001] The invention relates initially to a dust filter bag receiving chamber according to the features of the preamble of claim 1.

[0002] The invention further relates to a dust filter bag for arrangement in the aforementioned dust filter bag receiving chamber according to claim 21.

[0003] From JP H08-206044 A, a dust filter bag receiving chamber of a vacuum cleaner is known, comprising a holder for a retaining plate of the dust filter bag. The retaining plate can be locked in place by means of a locking finger that is deflectable against spring force, and a removal handle is also attached to the retaining plate. By pulling on the removal handle, the locking finger, which is movable against spring force, can be acted upon to release the retaining plate.

[0004] With conventional dust filter bags, the retaining plates are inserted into guides on the vacuum cleaner side and held in place. The dust filter bag is removed from the holder using the handle attached to the retaining plate. This handle typically extends across the surface of the retaining plate. Using the handle, the retaining plate, and thus the dust filter bag, is pulled out of the vacuum cleaner's holder.

[0005] In a dust filter bag known from DE 7118640 U, ​​a pivotable removal handle is provided on the retaining plate. The dust filter bag is held in the dust filter bag receiving chamber by a vacuum cleaner-side guide in which the edge edges of the retaining plate are received in guide rails when inserted. A comparable prior art is also provided by WO 2007 / 087591 A1.

[0006] From DE 20 2006 006 268 U1 a dust filter bag for a vacuum cleaner is known which has a rear grip for a locking finger on an adapter plate.

[0007] Starting from the aforementioned state of the art, the task with regard to the dust filter receiving chamber is to achieve an advantageous arrangement of the filter bag inserted into the dust filter receiving chamber.

[0008] This problem is solved in the subject matter of claim 1, whereby the focus is on the fact that, when a filter bag is inserted, the removal handle is deflected by the locking finger. This simultaneously achieves a convenient removal handle that is already in the pivoting position for the user when installed, through an advantageous interaction with the locking finger.

[0009] With regard to the dust filter bag provided for arrangement in the dust filter bag receiving chamber, it is advantageous according to the features of claim 21 that the dust filter bag has a flat side, a wide side, an entry opening and the retaining plate having a retaining plate surface, that the removal handle designed for pulling the retaining plate in the retaining plate surface is connected to the retaining plate by means of a connecting section, that the removal handle extends to the edge and in continuation of the retaining plate, that the removal handle is further immovable in a pulling direction relative to the entry opening and that the removal handle is pivotably connected to the retaining plate transversely to the pulling direction.

[0010] With regard to the dust filter bag intake chamber, removing the dust filter bag from the vacuum cleaner's intake chamber is significantly simplified. Simply pulling the removal handle releases the locking mechanism of the retaining plate. The removal handle on the retaining plate immediately conveys its function as a removal aid. By pulling the removal handle to dislodge the retaining plate from its recess in the intake chamber, the locking mechanism is simultaneously released without any further action required from the user.

[0011] The removal handle is pivotally attached to the retaining plate transversely to the direction of pull. This design allows the removal handle to be pivoted into a non-use position, for example, at a 90° angle to the retaining plate surface, when the dust filter bag is in the operating position. When the user grasps the removal handle, the resulting pulling motion pivots it back at least approximately to the preferred retaining plate surface, simultaneously releasing the locking mechanism of the retaining plate.

[0012] With the filter bag inserted, the dispensing handle is deflected by the locking finger into the preferred pivoted position relative to the retaining plate surface, which corresponds to the non-use position of the dispensing handle. The locking finger and dispensing handle are designed such that the dispensing handle deflects automatically when the filter bag is inserted into the holder, for example, by means of appropriately designed ramps / control edges.

[0013] For locking, the locking finger is designed to engage over an edge of the retaining plate, thus acting on the surface of the retaining plate facing away from the receiving side of the locking finger's anchoring point. It is particularly advantageous in this regard that the locking finger engages the retaining plate in the area where the removal handle is attached, further facilitating the preferred deflection of the removal handle by the locking finger when the filter bag is inserted. In the operating position of the dust filter bag, the locking finger is positioned next to the removal handle.

[0014] The retaining plate has an overlapping cam that is engaged by the locking finger when the filter bag is inserted. This overlapping cam is preferably located on the edge side, extending transversely to the plane of the dispensing handle and overlapping the connection section of the dispensing handle. The locking finger is further designed to subject the dispensing handle to bending stress.

[0015] In a further embodiment, the overreach cam is designed as a hook with a rear engagement surface for the preferred locking of the retaining plate on the mounting chamber side, in conjunction with the mounting bracket's locking finger. For this purpose, the hook engages in a window formed in the locking finger when the retaining plate is locked in a fixed position, optionally in addition to the locking mechanism between the locking finger and the overreach cam on the mounting plate side. While in the interaction of the locking finger and overreach cam, the mounting bracket's locking finger is the active locking element that engages the overreach cam, in the hook / locking finger window interaction, the mounting plate's hook is the active locking element, which engages the associated window edge of the locking finger with its locking surface.

[0016] The hook is preferably designed with a wedge-shaped surface on its outer side to deflect the locking finger when the filter bag is inserted into the holder. During this insertion, after the locking finger has deflected, the hook engages in the locking finger-side window, thus locking it in place. The wedge-shaped surface for deflecting the locking finger points in the insertion direction, while the locking surface of the hook is positioned opposite the deflection surface.

[0017] The locking cam is arranged in the plane of the retaining plate adjacent to a connection area of ​​the removal handle, for example, between two connection sections of the removal handle. When the dust filter bag is in its operating position, the removal handle, deflected by bending stress, lifts the locking finger when pulled, thereby pivoting the removal handle back to its original position, to such an extent that the clamping action against the locking cam or the edge of the retaining plate is released. The locking finger can be formed in the form of a locking clip, particularly a locking clip made of a metal material, which is spring-loaded.

[0018] The holder in the receiving chamber is designed as a pivoting holder, with a rear grip for one edge of the retaining plate and a locking mechanism associated with the opposite edge of the retaining plate. The locking mechanism is formed by the previously described configuration with the locking finger that engages with the edge of the retaining plate or with an overriding cam. Opposite this edge area of ​​the retaining plate, a rear grip is formed, which allows the retaining plate to pivot towards the locking mechanism. The removal handle, pivoted back to release the locking mechanism, rests against the locking finger after it is lifted. This, along with the further pivoting of the removal handle into an almost plane-flush orientation with the retaining plate, causes the retaining plate to pivot back out of the holder.

[0019] In a further embodiment, the holder is formed on the inside of a flap that closes the filter bag receiving chamber. This flap represents a pivotable section of the receiving chamber, which can be pivoted away from a fixed section of the receiving chamber or the vacuum cleaner for filter bag replacement. Preferably, the holder is rigidly connected to the flap, and even more preferably, it is formed as a single piece with the flap or with a flap section that supports the holder. Accordingly, the holder can be moved into an access position by pivoting the flap, enabling the user to change the filter bag. The mounting surface for connecting the retaining plate extends at a right or obtuse angle to the flap's pivot axis, specifically at an angle of 90 to 150 degrees, or, for example, at an angle of 120 degrees.The bracket is further assigned to one of the flap's edge edges facing the flap hinge axis, furthermore eccentrically with respect to the longitudinal extent of the flap's edge edge, wherein an extent dimension of the bracket considered in the longitudinal extent of the edge edge corresponds to two thirds or less, for example half of the edge edge extent length.

[0020] In a further preferred embodiment, the holder is designed as a closed frame, with an inner frame contour that is adapted to the outer contour of the mounting plate.

[0021] The locking finger is preferably provided on the crossbar of the frame opposite the mounting point on the flap. Opposite this crossbar, i.e., the mounting area on the flap, a provided mounting crossbar preferably has insertion sections for engaging cam sections on the mounting plate side. Through the interaction of the cam sections and the insertion sections of the mounting frame, a pivoting movement of the mounting plate into or out of the mounting is achieved.

[0022] On the flap side, a convex shape is formed on the frame, and more preferably on the crossbar containing the engagement sections. This convex shape preferably extends from the associated crossbar towards the retaining plate opening defined by the closed frame and serves to interact with a concave shape of the retaining plate, thereby centering the retaining plate during insertion, particularly by pivoting it into place. Furthermore, this also provides the user with an orientation aid for correctly positioning the retaining plate.

[0023] In a further development of the invention, a spring element is formed on the frame and / or the retaining plate for the spring-loaded retention of the retaining plate on the frame. This spring preferably acts in the insertion direction of the retaining plate and provides support to the intended clamping mechanism via the locking clip and the overlapping cams, or to the locking mechanism between the hook and the locking finger window, such that the spring forces the retaining plate into the intended locking position or into the contact position with the frame. This can be a conventional spring, such as a leaf spring or torsion spring. Furthermore, the spring effect can also be achieved by a suitable choice of material for the frame and / or retaining plate, particularly in the area of ​​interaction, for example, by forming the circumferential edge of the retaining plate from an elastic material.

[0024] An advantageous embodiment of the invention provides that the spring is a U-shaped spring, in particular made of spring steel. This U-shaped spring has at least one spring section, preferably acting on the retaining plate, and more preferably two spring legs, each projecting freely and more preferably pointing in opposite directions towards the retaining plate in order to force it into the contact position with the frame. In a further preferred embodiment, the spring acts against the retaining plate in the area of ​​its rear gripping sections, provided the spring is positioned accordingly on the frame.

[0025] Regarding the dust filter bag's placement in the dust filter bag's receiving chamber, the removal handle can be moved out of the retaining plate surface, which preferably forms a plane, while maintaining its connection to the retaining plate. This allows the removal handle to be pivoted into a non-use position, particularly when the dust filter bag is in its operating position within the vacuum cleaner's receptacle, or, for example, into a position angled at a right angle to the retaining plate surface. This provides a space-saving solution, especially when installed. To remove the dust filter bag from the vacuum cleaner's receptacle, the removal handle is pivoted back around the connecting section to an approximately plane-level or parallel alignment with the retaining plate. From this position, the retaining plate can then be pulled out of the corresponding device receptacle.Furthermore, the transport of a filled dust filter bag proves particularly advantageous, since, due to the pivoting capability of the removal handle relative to the holding plate, the dust filter bag tends towards a vertical orientation, regardless of the carrying angle, due to gravity. The pivot axis around which the removal handle can be moved relative to the holding plate is not necessarily a rigid axis designed by the construction. Rather, it can also be an instantaneous axis formed during the pivoting process, which, especially if the connecting section is designed as a flexible, ribbon-like section, can even change direction within the connecting section, parallel to the plane of the holding plate, during the pivoting process.

[0026] In an advantageous embodiment, the removal handle is attached to the flat side of the retaining plate, preferably along a narrow edge, and furthermore, in the case of an overall elongated rectangular retaining plate, the attachment in the area of ​​the narrow side is preferred. Alternatively, the attachment can also be provided along the longer edge of the retaining plate.

[0027] The retaining plate can be made of a cardboard / paper material in a known manner. A preferred embodiment involves manufacturing the retaining plate using plastic injection molding, with the removal handle being integrally formed with the retaining plate during this manufacturing process. The connecting section can be formed as a thin strip, e.g., a hinge strip.

[0028] It is further preferred that the dispensing handle is connected to the retaining plate via several tabs arranged at intervals in the plane of the retaining plate, preferably via two tabs arranged at intervals. The latter are attached in the form of film hinges, and these tabs forming the connection sections can be shaped such that a pivoting of the dispensing handle from a plane-parallel orientation to the retaining plate can only occur in one direction, namely preferably towards a parallel orientation to the bag attached to the retaining plate.

[0029] The removal handle has a through-opening. This is preferably in the form of a circular cylindrical opening, which, especially with an overall ring-shaped design of the removal handle, makes carrying easier. The diameter of the through-opening is preferably chosen so that at least one, but preferably at least two, fingers can reach through to carry the dust filter bag.

[0030] The overlapping cam, which is formed particularly along a narrow edge on the retaining plate, can be formed simply by the edge itself. Alternatively, the overlapping cam can be formed by a material accumulation, for example, in the form of a step. The overlapping cam extends in the direction of the removal handle into the plane of the retaining plate or a parallel plane of the removal handle, in which position the removal handle is used to pull the dust filter bag from its corresponding receptacle. The overlapping cam serves to secure, and in particular lock, the retaining plate in the corresponding connection area of ​​the vacuum cleaner. For this purpose, the cam can be engaged by a vacuum cleaner-side element. Accordingly, the overlapping cam forms an engaging locking surface that, when the dust bag or retaining plate is inserted in the vacuum cleaner-side receptacle, points in the removal direction.In the mounting position, a device-side locking element rests against this locking surface of the gripping cam. In a further embodiment, the gripping cam is designed as a hook, particularly with a hook nose that projects beyond the removal handle plane. Such a hook also serves to secure, or optionally to provide additional support for, the retaining plate or filter bag to the vacuum cleaner-side mounting, particularly in the form of a detent mechanism in which the hook or hook projection engages in a corresponding undercut recess of the device-side mounting. Due to the preferred arrangement of the hook on the removal handle, and more preferably adjacent to a removal handle pivot axis, the hook can be moved into a position releasing the retaining plate by corresponding action of the removal handle.

[0031] The gripping cam is molded onto the retaining plate in a non-pivotable manner compared to the removal handle, meaning that the removal handle can be moved relative to the gripping cam.

[0032] In a preferred embodiment, the overlapping cam is arranged transversely to the plane of the removal handle, overlapping the connection section of the removal handle, and further adjacent to the connection section. The overlapping cam can also be arranged between two connection sections of the removal handle, with the connection sections and the removal handle attached to them spanning the overlapping cam in a bridge-like manner, at least in one of the pivoted end positions of the removal handle, preferably in the pull position.

[0033] If the gripping cam is designed as a hook, in a further preferred embodiment it has a wedge-shaped surface on its outer side, facing in the insertion direction of the retaining plate. This wedge is preferably directed towards the vacuum cleaner-side receptacle opposite to the insertion direction of the retaining plate, to preferably deflect a locking element of the vacuum cleaner-side holder that interacts with the hook during insertion of the filter bag. Viewed in the insertion direction, behind the wedge-shaped surface, the hook forms a locking surface for interaction with the locking or detent element of the device-side holder. In this context, it is further advantageous if the hook can be pivoted with the removal handle, so that by pivoting the removal handle the hook is moved from a locking or detent position to a release position for removing the filter bag or the retaining plate from the device-side receptacle.

[0034] Alternatively or in combination with the hook design, in a further embodiment the gripping cam formed on the narrow side of the retaining plate has two cam sections arranged at a distance from each other. These are preferably arranged in overlapping positions in a projection along the narrow side of the retaining plate, are accordingly designed with the same cross-section, and leave a gap between them when viewed along the narrow side of the retaining plate. The hook moves into or out of this gap between the cam sections, preferably when the removal handle is pivoted. The hook acts as a safety hook, securing the gripping position achieved in the vacuum cleaner when the retaining plate is locked in the locked position, preferably by means of a rear grip. Accordingly, an activatable or...A locking element, which can be deactivated by a corresponding relocation of the removal handle, is provided.

[0035] The overlapping cam or cam sections and the preferably provided hook, furthermore the removal handle are formed on an edge of the retaining plate oriented transversely to the pivot axis of the closure flap, wherein the distance between two cam sections arranged at a distance from each other corresponds to one third to one tenth, more preferably one fifth to one eighth of the longitudinal extent of the closure flap transversely to the pivot axis.

[0036] In a further preferred embodiment, the retaining plate is designed for pivot locking in the device-side receptacle. For this purpose, rear grip sections are preferably formed on the narrow side of the retaining plate opposite the dispensing handle. These are further preferably in the form of pins projecting at right angles to the facing edge of the retaining plate, projecting beyond the edge of the retaining plate. These pins are preferably arranged in a plane parallel to the plane of the retaining plate, in particular to a bag attachment plane, and are spaced apart from each other with respect to the associated edge of the retaining plate. According to the proposed arrangement opposite the dispensing handle, the spacing of the rear grip sections is longitudinally extended along the closure flap, i.e.,transverse to its pivot axis, wherein the distance dimension corresponds to 0.7 to 1.2 times, more preferably to 1 time, the length dimension of the closure flap considered transverse to the pivot axis.

[0037] In a further embodiment, the narrow side of the retaining plate between the spaced-apart rear grip sections is concave, extending outwards from the locking flap. The concave shape is preferably provided with a constant radius, with the resulting curve extending into the rear grip sections at each end.

[0038] The specified numerical ranges also include all intermediate values ​​– unless such values ​​are already provided as examples – and are specifically limited in 1 / 10 increments from the lower and / or upper limit to the other limit. The word "and" here indicates that both limits are shifted, i.e., narrowed, by one or more tenths towards the limit.

[0039] The invention is explained in more detail below with reference to the accompanying drawing, which merely illustrates several exemplary embodiments. It shows: Fig. 1. In perspective view, an electric vacuum cleaner with a dust filter chamber for a dust filter bag; Fig. 2. The dust filter bag in a perspective view showing the filter bag-side surface of the mounting plate, with the filter bag indicated graphically; Fig. 3. The holder of the filter bag in a perspective partial view, concerning the unfilled position; Fig. 4 a further perspective view of the holder, an intermediate position during the assembly and locking of the dust filter bag's retaining plate; Fig. 5 the cut according to line V in Fig. 3, however, concerning the fixed mounting position of the dust filter bag or the mounting plate in the holder; Fig. 6 one of the Fig. 3. Approximately corresponding perspective view of the holder, however the holder position of the dust filter bag according to the illustration in Fig. 5 concerning; Fig. 7 the enlargement of area VII in Fig. 5; Fig. 8 one of the Fig. 7 corresponding illustration, but relating to an intermediate position in the course of removing the dust filter bag from the holder by pivoting open a removal handle on the retaining plate side; Fig. 9 a follow-up presentation to Fig. 8, concerning the removal position of the dust filter bag; Fig. 10 in perspective view a retaining plate in a further embodiment omitting the dust bag, in the position corresponding to the mounting on the receiving chamber side; Fig. 11 Another perspective view of this, concerning a situation during the insertion of the retaining plate into the holder; Fig. 12 the view according to arrow XII in Fig. 10; Fig. 13 the cut according to line XIII - XIII in Fig. 12; Fig. 14 one of the Fig. 13 corresponding illustration, but concerning the mounting position of the dust filter bag or the mounting plate in the holder; Fig. 15 the enlargement of area XV in Fig. 14; Fig. 16 a representation according to Fig. 15, however, referring to a section offset parallel to the drawing plane; Fig. 17 one of the Fig. 11. Corresponding illustration concerning the mounting position; Fig. 18 one of the Fig. 11 corresponding illustration, concerning a further embodiment; Fig. 19 one of the Fig. 13 corresponding illustration concerning the further embodiment; Fig. 20 the further embodiment in a representation according to Fig. 14; Fig. 21 the enlarged section according to line XXI - XXI in Fig. 19.

[0040] The presentation and description initially refers to Fig. 1 a vacuum cleaner 1 in the form of a stick-guided electric handheld vacuum cleaner with a basic housing 2 containing a motor-blower unit, to which a dust filter bag intake chamber 3 is connected in a swiveling manner.

[0041] A handle 4 is attached to the base housing 2 for guiding the vacuum cleaner 1. This handle has a grip 5 at its end, which is equipped with a switch 6 for electrical activation and control of the vacuum cleaner 1. Power is supplied via an electrical cable 7, which runs into the grip 5.

[0042] In the illustrated embodiment, soil cultivation is carried out via a soil nozzle 8. This nozzle is connected, fluidically and optionally also electrically, to the base housing 2 and the motor-blower unit arranged therein via a coupling 9 (not shown in detail).

[0043] A dust filter bag 10 is held in the intake chamber 3. This bag has a filter sack 12 attached to a mounting plate 1. The filter sack 12 is made of a non-woven fabric. Alternatively, the filter sack 12 can also be made of a paper material.

[0044] To expose the dust filter bag 10, in particular to enable its replacement, the receiving chamber 3 can be opened. For this purpose, a part of the receiving chamber 3 is designed as a flap 35, which can be pivoted about a hinge axis (not shown) relative to a fixed part of the receiving chamber 3.

[0045] The filter bag 12 is secured to the retaining plate 11 in the opening area, for example, by being glued to it. The retaining plate 11, which is shaped as a flat structure, has a central filling opening 13 that, when the vacuum cleaner 1 is in operation, is connected to the suction air line of the base housing 2. Optionally, a suction nozzle for the suction air line may be provided, which protrudes through the filling opening 13 into the filter bag. When the vacuum cleaner 1 is not in operation, the filling opening 13 is covered by a flap 39.

[0046] The retaining plate 11 is further manufactured in the illustrated embodiment from a plastic tool, preferably by injection molding, and has a rectangular plan contour with a narrow edge 14 and a long edge 15. The dimensional ratio of narrow edge 14 to long edge 15 is approximately 2:3 in the illustrated embodiment, with an exemplary long edge length of approximately 90 to 150 mm.

[0047] The filter bag 12 is fixed on one of the broad sides 16 of the retaining plate 11, which are defined by the narrow edges 14 and the long edges 15. The thickness of the retaining plate 11, measured between the two broad sides 16, corresponds to approximately one-tenth to one-fiftieth of the length of the long edge 15, thus approximately 1.5 to 5 mm in the illustrated embodiment.

[0048] The circumferential flat side 17 of the retaining plate 11 is aligned perpendicular to the opposite broad sides 16, provided that the broad sides 16 are of the same size.

[0049] A rear grip section 18 is formed on a flat side 17 of the retaining plate 11, corresponding to a longitudinal edge 15. This section is flush with the broad side 16 of the retaining plate 11 opposite the filter bag 12 and extends beyond the longitudinal edge 15 of the retaining plate 11. In the thickness direction of the retaining plate 11, the thickness of the rear grip section 18 is approximately half the thickness of the retaining plate 11 measured in the same direction, so that a recessed step 19 is formed facing the broad side 16 of the retaining plate 11 that supports the filter bag 12.

[0050] The free extension beyond the longitudinal edge 15 of the retaining plate 11, measured perpendicular to the thickness of the retaining plate, corresponds approximately to twice the thickness of the rear grip section.

[0051] Viewed in the longitudinal extension of the associated longitudinal edge 15, the rear grip section 18 is arranged centrally and extends only about two-thirds of the longitudinal edge length, so that longitudinal edge sections representing the actual contour of the retaining plate 11 are formed on both sides of the rear grip section 18.

[0052] Opposite the longitudinal edge 15 of the rear grip section 18, a removal handle 20 is arranged on the associated flat side 17. This handle is shaped as a ring eyelet with a circular opening 21 for gripping through.

[0053] The removal handle 20 is connected to the retaining plate 11 via two tabs 23 spaced apart from each other and tangentially engaging the gripping ring 22, wherein the removal handle 20 is manufactured in one piece with the retaining plate 11 in the course of the plastic injection molding process.

[0054] The gripping ring 22 and the tabs 23 extend approximately in one plane.

[0055] The tabs 23 are pivotably attached to the associated flat side 17 of the mounting plate 11 via connecting sections 24 in the form of film hinges. The pivoting of the removal handle 20, which is thus rooted on the mounting plate 11, occurs about an axis x that runs parallel to the associated longitudinal edge 15 of the mounting plate 11. Furthermore, the axis x extends in the area between the two planes defined by the broad side 16.

[0056] According to this design, the removal handle 20 can be pivoted from a plane-parallel orientation to the retaining plate 11 into an approximately perpendicular orientation to it, in which pivoted position the removal handle 20 lies laterally next to a wall section of the filter bag 12.

[0057] The two tabs 23 of the removal handle 20, spaced apart from each other in the direction of extension of the axis x, leave a gap 25. An overlapping cam 26, formed between the connecting sections 24 on the same flat side 17 of the retaining plate 11, projects into this gap. This cam is formed in one piece from the retaining plate 11 and has a control chamfer 27 facing the broad side 16 of the retaining plate 11 facing away from the filter bag 12.

[0058] A step 28 is formed behind the control slope 27.

[0059] The material thickness of the overlapping cam 26 in the area of ​​the step 28 corresponds approximately to the material thickness of the tabs 23 supporting the removal handle 20, wherein the connecting sections 24 on both sides of the overlapping cam 26 are formed laterally to the sections having the control slope 27.

[0060] The pivoting of the removal handle 20 takes place from a parallel alignment to the retaining plate 11 in the direction of the filter bag 12, i.e. in the direction of the step 28 of the overlapping cam 26.

[0061] The holder 29 for securing the dust filter bag 10 in the receiving chamber 3 is initially formed as a rigid, frame-like component, with a substantially circumferential frame 29 through whose centrally formed opening the suction channel to the dust filter bag 10 is guided when the vacuum cleaner 1 is in operation. The base surface of the frame 30 is adapted to the plan view of the mounting plate 11. The holder 29 is rigidly arranged on the inside of the flap 35 that closes the receiving chamber in the area of ​​the edge associated with the flap hinge axis.

[0062] In a foot-side area formed along a longer frame leg, a restraint rib 31 is formed at a parallel distance to the frame section. This, as well as the frame-like receptacle 29, is preferably manufactured in one piece with the receiving chamber 3 or a partial section of the receiving chamber 3 using a plastic injection molding process.

[0063] Between the restraint bridge 31 and the frame 30 there is a gap section in which the rear grip section 18 of the retaining plate 11 enters to secure the dust filter bag 10.

[0064] Accordingly, the bracket 29 is designed as a pivot bracket. To insert the dust filter bag, its retaining plate 11 with the molded-on rear grip section 18 is inserted into the gap between the restraint bar 31 and the frame 30. The retaining plate 11 is then pivoted into a preferably flush position with the frame 30.

[0065] To secure the dust filter bag 10 in this operating position, a locking finger 32 in the form of a metal locking clip is provided. This is attached to the longitudinal frame section 33 of the holder 29 opposite the retaining web 31. The locking finger 32 is positioned centrally along the length of this frame section 33, and furthermore, the locking finger 32 projects freely beyond the corresponding edge of the longitudinal frame section 33 in the direction of the dust filter bag 10 to be inserted.

[0066] In this projecting section of the locking finger 32, it is provided with a locking ridge 34 pointing downwards, i.e., towards the opposite restraint rib 31. This ridge is approximately V-shaped in cross-section.

[0067] During the pivoting movement of the retaining plate 11 into the detent position, the detent bead 34 contacts the control chamfer of the over-engagement cam 26, which, due to the spring-like properties of the detent finger 32, initially causes a deflection (with reference to the illustration in Fig. 5 vertically upwards). After passing over the control ramp 27, the locking bead 34 falls spring-assisted into stage 28, according to which the locking mechanism of the retaining plate 11 and above it of the entire dust filter bag 10 is achieved.

[0068] Simultaneously, the removal handle 20, provided it is not already in the pivoted position, is pivoted around the pivot axis x towards the filter bag 12 by the outer sections of the locking finger 32 sliding along the handle tabs 23. Accordingly, the removal handle 20 is in the Fig. 5 operating positions shown in a spatially favorable arrangement.

[0069] To change the possibly filled dust filter bag 10, the user, after opening the receiving chamber 3 by pivoting off the flap 35, has access to a removal handle 20 that has pivoted away from the retaining plate 11. A clear removal procedure is thus evident.

[0070] By grasping the removal handle 20, it is initially pivoted about the axis x according to the still existing detent setting of the retaining plate 11, whereby in the course of this pivoting according to the illustration in Fig. 8 the locking finger 32 or its locking bead 34 is lifted by means of the tabs 23 of the removal handle 20 provided laterally to the gripping cam 26, which ultimately leads to a release of the gripping cam 26 as shown in Fig. 9 leads. By further pivoting the removal handle 20 into an approximately parallel alignment to the retaining plate plane, the retaining plate 11 is pivoted out of the holder 29 by pushing off the tabs 23 on the locking finger 32.

[0071] As a result of this design, pulling on the removal handle 20 first releases the locking mechanism due to the inevitable pivoting motion, and then the filter bag 10 is removed from the receiving chamber 3 in the direction of pull. The direction of pull z runs essentially perpendicular to the longitudinal edge 15 holding the removal handle 20 and further essentially within the plane defined by the retaining plate 11.

[0072] This results in simplified handling for the user when inserting and removing the dust filter bag 10. With the receiving chamber 3 open, a clear insertion and removal situation can be identified, whereby a clearly visible locking and unlocking element (removal handle 20) simplifies handling for the user both for inserting and removing and also for transporting the dust filter bag 10, especially when filled.

[0073] The Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16 to Fig. Figure 17 shows a second embodiment in which a connection plane A of the retaining plate 11 for the airtight connection of the dust filter bag 10 to the device-side nozzle runs at an acute angle of approximately 30 degrees to the extent of the retaining plate or to a bag fastening plane B formed thereby. This bag fastening plane B is formed by a circumferential retaining plate collar 36.

[0074] On the narrow side 37 of the retaining plate 11 opposite the removal handle 20, the retaining plate forms an outwardly opening, concave area 38 on the underside of the retaining plate collar 36, in an area between the retaining plate collar 36 and the connection plane A. The apex of the concave area 38 faces a retaining plate wall 40 that encompasses the closing flap 39 of the retaining plate 11.

[0075] The freely extending end regions of this rounded narrow-side section transition into rear-gripping sections 18, which, according to this arrangement, are spaced apart from each other transversely to their direction of extension when aligned parallel to the retaining plate collar 36. This spacing dimension essentially corresponds to the longitudinal extent of the locking flap 39 transversely to its hinge axis y.

[0076] The gripping cam 26 formed in the area of ​​the pivot axis x of the removal handle 20 is divided into two parts in the second embodiment. Accordingly, two cam sections 49 are arranged at a distance from each other, which, in accordance with the first embodiment, engage behind the detent ridge 34 of the spring-loaded detent finger 32 in the holding position of the retaining plate 11.

[0077] A hook 41, integrally formed on the removal handle 20, engages in the space between the two cam sections 49. This hook extends into the clearance 25 left on the pivot axis side and forms a hook nose 42 at its end, projecting perpendicularly to the plane of the removal handle 20. This nose points downwards towards the connection plane A, in an approximately parallel alignment of the removal handle 20 with the retaining plate collar 36.

[0078] The hook 41 has a wedge surface 43 on its outer side, facing the space between the gripping cams 26. Opposite this, the hook nose 42 is provided with a locking surface 44 oriented approximately perpendicular to the plane of the removal handle 20.

[0079] According to the described arrangement, the hook 41 together with the removal handle 20 can be pivotally displaced about the pivot axis x.

[0080] The locking finger 32, which in this embodiment is also designed as a metal locking clip, has a window 45 attributable to the hook 41 on the retaining plate side. This window extends, passing through the locking bead 34, further into the legs adjoining the locking bead 34, whereby on both sides of the window 45 the locking bead 34 continues to serve to engage behind the cam sections 49 on the retaining plate side.

[0081] The hook 41 on the retaining plate side or the removal handle side engages in the window 45 for further locking. This occurs during the pivoting movement of the retaining plate 11 into the holder 29, with the hook 41 deflecting due to the wedge surface 43 being acted upon by the associated window edge. As described in the first embodiment, in the holder position of the retaining plate 11, the removal handle 20 is in a pivoted, approximately perpendicular position to the retaining plate 11 or the retaining plate collar 36. In this position, the hook 41 engages behind the associated window edge with its locking surface 44 (see Figure 1). Fig. 15).

[0082] This provides a further safeguard for the retaining plate's fixed position in the holder 29. This locking mechanism can be released by pulling the removal handle 20, which simultaneously pivots it into the extended position towards the retaining plate 11 or the retaining plate collar 36.

[0083] The restraint bridge 31 of the mounting frame 30, opposite the locking finger 32, is provided with two recesses 46 arranged at intervals along the longitudinal extension of the restraint bridge 31, for the engagement of the rear gripping sections 18 on the side of the mounting plate. These are spaced according to the parallel spacing of the rear gripping sections 18 to the mounting plate collar 36 and to the mounting plate bearing surface of the frame 30.

[0084] A convex elevation 47 extends between the recesses 46. This projection extends into the mounting opening enclosed by the frame 30, with the contour of the elevation 47 adapting to the concave area of ​​the mounting plate 11.

[0085] To insert the retaining plate 11, the rear engagement sections 18 are inserted into the corresponding recesses 46 of the frame 30, whereby the concave area 38 of the retaining plate 11 precisely engages the raised portion 47 of the frame 30, thereby achieving additional centering of the retaining plate 11 to the frame 30. A subsequent pivoting movement of the retaining plate 11 towards the frame 30 locks the retaining plate 11 into place by the cam sections 49 engaging behind the locking bead 34 of the locking finger 32 and the hook 41 engaging in the window 45 on the locking finger side.

[0086] Here too, the removal handle 20 is simultaneously swung away around the pivot axis x by running the edge sections of the locking finger 32 on the handle tabs 23, provided that it has not yet been moved into the swung-away position.

[0087] As can be seen further in the illustrations, a mounting section 48 for a scent chip or the like is provided on the retaining plate collar 36, projecting freely beyond the retaining plate collar 36. This is pivotally hinged to the retaining plate edge, which is aligned parallel to the locking flap axis.

[0088] The in the Fig. 18, Fig. 19, Fig. 20 to Fig.The further embodiment shown in Figure 21 is based on the embodiment described above according to Figures 10 to 17. In this further embodiment, a spring 50 is provided for the spring-loaded retention of the retaining plate 11 on the frame 30 of the bracket 29. This spring is captive fixed in the base region of the frame 30, and more specifically in the connection region of the frame 30 to the flap 35, for interaction with the base region of the retaining plate 11 opposite the spring-loaded retaining, and more specifically for interaction with the rear grip sections 18.

[0089] The spring 50 is designed as a U-shaped spring, consisting of spring steel, with a central fixing section 52 considered in its entirety. Viewed in plan view, this section is essentially U-shaped. Outwardly extending from the free ends of the parallel U-shaped legs, i.e., facing away from the opening of the U, spring legs 51 project freely from the U-shaped legs of the fixing section 52.

[0090] The fixing leg 52 secures the spring 50 between the recesses 46 in the holder 29. For this purpose, the fixing section 52 engages in a correspondingly shaped, window-like opening 53, which is covered by a holder section.

[0091] The spring legs 51 projecting from the fixing section 52 penetrate the free areas of the recesses 46, with a further elongated hole-like opening 54 being provided on both sides of the recesses 46 to allow the movement of the spring legs 51.

[0092] These openings 54 are designed in such a way that the spring legs 51 can be moved in or against the pivoting direction of the retaining plate 11.

[0093] The spring legs 51 are under preload, the recesses 46 passing through the openings 54.

[0094] During the insertion of the retaining plate 11 into the holder 29, the rear gripping sections 18 dip into the area of ​​the recess 46 facing away from the fixing section 52 of the spring 50, this occurs with a spring-like retraction of the spring legs 51, which accordingly act with a spring force F on the rear gripping sections 18 which are supported opposite each other on a wall section 55 of the holder 29, such that the retaining plate 18 is pressed against the holder frame 30 via the rear gripping sections 18.

Claims

[1] Dust filter bag receiving chamber (3) of a vacuum cleaner (1), with a holder (29) for a retaining plate (11) of a dust filter bag (10), wherein the retaining plate (11) can be locked in place by means of a locking finger (32) which can be deflected against spring force, wherein a removal handle (20) is attached to the retaining plate (11), wherein pulling on the removal handle (20) acts on the locking finger (32) to release the retaining plate (11), characterized by , that when the dust filter bag (10) is inserted, the removal handle (20) is deflected by the locking finger (32). [2] Receiving chamber according to claim 1, characterized by , that the removal handle (20) is pivotably attached to the retaining plate (11) transversely to the direction of pull (z). [3] Receiving chamber according to any one of the preceding claims, characterized by , that the locking finger (32) is designed to extend over an edge of the retaining plate (11). [4] Receiving chamber according to one of claims 2 or 3, characterized by , that the locking finger (32) overlaps the retaining plate (11) in the area of ​​the connection of the removal handle (20). [5] Receiving chamber according to any one of the preceding claims, characterized by , that the retaining plate (11) has an overlapping cam (26) which is overlapped by the locking finger (32) when the filter bag (10) is inserted. [6] Receiving chamber according to claim 5, characterized by , that the overlapping cam (26) is designed as a hook (41). [7] Receiving chamber according to claim 6, characterized by , that the hook (41) engages in a window (45) formed in the locking finger (32). [8] Receiving chamber according to one of claims 6 or 7, characterized by , that the hook (41) forms a wedge surface (43) on the outside for deflecting the locking finger (32) when inserting the dust filter bag (10) into the holder (29). [9] Recording chamber according to any one of the preceding claims, characterized by, that the locking finger (32) continues to bend the removal handle (20). [10] Receiving chamber according to any one of claims 5 to 9, characterized by , that the overlapping cam (26) is arranged in the plane direction of the retaining plate (11) adjacent to a connection area of ​​the removal handle (20). [11] Receiving chamber according to any one of claims 5 to 10, characterized by , that by pulling on the removal handle (20) the locking finger (32) is raised so far that a clamping to the gripping cam (26) is no longer required. [12] Receiving chamber according to any one of the preceding claims, characterized by , that the holder (29) is designed as a pivoting holder, with a rear grip for an edge of the retaining plate (11) and with the locking finger (32) assigned to the opposite edge of the retaining plate (11). [13] Receiving chamber according to any one of the preceding claims, characterized by, that the holder (29) is formed on the inside of a flap (35) that closes the filter bag receiving chamber. [14] Receiving chamber according to claim 13, characterized by , that the bracket (29) is rigidly connected to the flap (35). [15] Receiving chamber according to claim 14, characterized by , that a mounting surface for connecting the retaining plate (11) extends at a right or obtuse angle to an extension of the flap (35) transverse to its pivoting axis. [16] Receiving chamber according to any one of the preceding claims, characterized by that the bracket (29) is designed as a closed frame (30). [17] Receiving chamber according to one of claims 16, characterized by , that a convex shape is formed on the flap side of the frame (30) for corresponding interaction with a concave shape of the retaining plate (11). [18] Receiving chamber according to one of claims 16 or 17, characterized by, that a spring element is formed on the frame (30) and / or on the retaining plate (11) for the spring-loaded retention of the retaining plate (11) on the frame (30). [19] Receiving chamber according to claim 18, characterized by , that the spring element is a spring (50) and the spring (50) acts in the insertion direction of the retaining plate (11). [20] Receiving chamber according to claim 19, characterized by , that the spring (50) is a bow spring with two spring arms (51) for the spring action on the retaining plate (11). [21] Dust filter bag (10) for arrangement in a dust filter bag receiving chamber (3) according to one of claims 1 to 20, characterized by, that the dust filter bag (10) has a flat side (17), a wide side (16), an entry opening (13) and a retaining plate (11) having a retaining plate surface, that the removal handle (20) formed in the retaining plate surface for pulling the retaining plate (11) is connected to the retaining plate (11) by means of a connecting section (24), that the removal handle (20) extends to the edge and in continuation of the retaining plate (11), that the removal handle (20) is further immovable in a pulling direction (Z) relative to the entry opening (13) and that the removal handle (20) is pivotably connected to the retaining plate (11) transversely to the pulling direction (Z). [22] Dust filter bag according to claim 21, characterized by , that the removal handle (20) is attached to the flat side (17) of the retaining plate (11). [23] Dust filter bags according to one of claims 21 or 22, characterized by, that the retaining plate (11) is manufactured in one piece with the removal handle (20) using the plastic injection molding process. [24] Dust filter bag according to one of claims 21 to 23, characterized by , that the removal handle (20) is connected to the retaining plate (11) via several tabs (23) arranged at a distance from each other in the plane of the retaining plate (11). [25] Dust filter bag according to any one of claims 21 to 24, characterized by , that the removal handle (20) has a reach-through opening (21). [26] Dust filter bag according to any one of claims 21 to 25, excluding claims 5 and 6, characterized by , that the retaining plate (11) has an overreach cam (26) and that the overreach cam (26) is designed as a hook (41). [27] Dust filter bag according to claim 26, wherein the gripping cam (26) extends in the direction of extension of the removal handle (20). [28] Dust filter bags according to one of claims 26 or 27, characterized by, that the overlapping cam (26) is arranged between two connecting sections (24) of the removal handle (20). [29] Dust filter bag according to any one of claims 26 to 28, characterized by , that the overreach cam (26) is not pivotable compared to the removal handle (20). [30] Dust filter bag according to any one of claims 26 to 29, characterized by , that the overlapping cam (26) formed on a narrow side (37) of the retaining plate (11) has two cam sections (49) arranged at a distance from each other. [31] Dust filter bag according to claim 30, characterized by , that on the narrow side (37) of the retaining plate (11) opposite the removal handle (20) rear grip sections (18) are formed. [32] Dust filter bags according to one of claims 30 or 31, characterized by , that the narrow side (37) of the retaining plate (11) runs concavely between the spaced-apart rear grip sections (18). [33] Dust filter bag according to any one of claims 26 to 32, characterized by , that the hook (41) can be pivoted with the removal handle (20). [34] Dust filter bag according to any one of claims 30 to 33, characterized by , that the hook (41) enters between the cam sections (49) when the removal handle (20) is pivoted. [35] Dust filter bag receiving chamber (3) according to one of claims 1 to 20 or dust filter bag according to one of claims 21 to 34, characterized by that the vacuum cleaner is an electric vacuum cleaner.

Images