EP1750563A1

EP1750563A1 - Housing for a cylinder vacuum cleaner

Info

Publication number: EP1750563A1
Application number: EP05731074A
Authority: EP
Inventors: Udo Mersmann; Arne Sauerland
Original assignee: Miele und Cie KG
Current assignee: Miele und Cie KG
Priority date: 2004-05-17
Filing date: 2005-04-14
Publication date: 2007-02-14
Anticipated expiration: 2025-04-14
Also published as: SI1750563T1; WO2005112726A1; DE502005010136D1; US7617565B2; EP1750563B1; DE102004024817B3; US20070209153A1; ATE478594T1; PL1750563T3

Abstract

An appliance housing for a canister vacuum cleaner having an interior divided into a motor fan chamber and a dust collection chamber includes a flat, upwardly open receiving shell. The receiving shell has a partition dividing the lower housing part into a first bottom portion for the motor fan chamber and a second bottom portion for the dust collection chamber. The second bottom portion includes a surrounding seal portion. An upper housing part in provided including an upwardly and downwardly open, substantially tubular housing insert defining the dust collection chamber. A lower edge of the housing insert is receivable in the surrounding seal portion of the second bottom portion of the lower housing part. A housing cover closes the dust collection chamber.

Description

description

Device housing for a cylinder vacuum cleaner

The invention relates to a device housing for a vacuum cleaner, which is divided in the interior in a motor fan room and in a dust collection chamber, with a lower housing part, an upper housing part and a housing cover, wherein the dust collection space is closed via the housing cover.

From DE 4421 214 A1 discloses a vacuum cleaner with a multipart device housing, consisting of a lower housing part and a housing upper part known. The upper housing part comprises one or more separate cover parts. The lower housing part is divided by a partition into a motor fan room and a dust collection room.

From DE 4421 458 C2, a vacuum cleaner with a multi-part device housing is known in which a hinged cover hinges on housing cover covers the dust collection chamber for a dust filter bag and a replaceable exhaust air or hygiene filter. The housing cover is hinged to the upper housing part, which covers the engine fan room and is flush with the housing top of this area with the lid closed.

In both embodiments, the multi-part structure of the housing is designed such that the lower housing part is formed as a raised to the side walls shell which has a sealed relative to the dust collecting space engine fan room. The engine fan room is covered by the upper housing part, on which the housing cover is articulated. The housing cover is shaped such that it forms the housing top side and the lateral wall for the dust collection chamber. In addition, the housing cover is formed with a receiving space for vacuum cleaner accessories, which can be closed by a separate lid. The exhaust air of the vacuum cleaner is led out of the engine fan room via an exhaust air filter. The exhaust filter is located below the housing cover. The housing cover is formed in the area covering the exhaust air filter with exhaust air slots.

Due to the structure and the arrangement of the lid, there are increased demands on the design of the seals in both embodiments, so that the negative pressure area in the dust collecting space optimally with respect to the discharge or overpressure of the

Motor fan room is to seal. The strongly curved design of the housing cover, which also forms the lateral housing boundary of the dust collection chamber, is very expensive to produce. In addition, the impression of an unstable arrangement arises when the housing cover is open. To avoid these disadvantages, already modified structures for vacuum cleaner are known (eg Miele Series S 700), in which the multipart device housing has a lower part with laterally pot-shaped raised walls for the dust collection space boundary. The cup-shaped raised dust collecting chamber walls have a circumferential seal, which seals with the housing cover area for the dust collection space. The cup-shaped raised dust collecting chamber walls are laterally covered by an upper housing part, which encloses the engine fan room and the dust collecting space. At the housing portion which covers the engine fan room, a flat trained housing cover is hinged with a receiving space for vacuum cleaner accessories hinged. The part of the housing upper part enclosing the engine fan chamber has a receptacle for an exhaust air filter. In addition, the on / off button, the controls for the suction power control and the button for cable rewinding are arranged on this housing area.

The production of the lower part with the cup-shaped raised Staubsammelraum- walls is technically complex and large, expensive injection molding machines are required. In addition, due to unfavorable wall thickness ratios in the transition region of the base plate and the laterally raised wall sections with the ribs formed thereon, sinkholes may occur.

Due to the increase in the suction power, it is now also necessary to reinforce the dust collecting space walls by ribs (see DE 93 12061, Figure 1). This leads to sink marks on the visible outside of the base in the above-described structures in which the ribs of the Staubsammelraum- bottom are formed from the lower housing part. It is therefore known to form the dust collection chamber as a separate insert (DE 8432010 U1) or to form a downwardly closed insert to the upper housing part. This creates a double bottom, which reduces the available dust collection space and thus the dust-holding capacity. Since, in all the variants described above, the dust collecting space side walls and the dust collecting space floor form a closed pot, the tools for shaping the lateral ribs must be removed from above. As a result, straight-sided, out-of-bay dust collecting space walls must be used, with the ribs projecting into and depleting the dust collection space opening.

The invention thus raises the problem of designing a multi-part stable construction for the device housing of a vacuum cleaner, which is inexpensive to produce in terms of manufacturing, in which the dust collecting space is designed for a maximum possible volume is and in which the negative pressure region in the dust collection chamber is to seal optimal despite the maximum possible bag volume with respect to the engine fan room.

According to the invention this problem is solved by a device housing for a vacuum cleaner with the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

The achievable with the present invention consist in particular in the design of the individual housing parts, which are manufactured by their optimal demolding directions adapted design as well as the lower part weight and the lower projected area of the items in relatively inexpensive to produce injection molding and injection molding machines. Lower material consumption for the individual parts also enables shorter cycle times in injection molding, whereby the parts are overall less expensive to produce. Due to the upwardly and downwardly open, substantially tubular design of the housing insert, it can be demolded downwards and thus offers better, space-saving possibilities for the design of internal ribs and sealing surfaces.

In an advantageous embodiment, the housing insert as a separate, free of

Housing surfaces held component formed. As a result, a production is possible, which is free of color variants and so facilitates the storage and assembly handling. In addition, in such an application on the outside of any rib structure can be formed. Thus, advantageously at very high suction rates, the housing insert on the outwardly directed surface can be reinforced with a truss-like rib structure.

To simplify the assembly, it is useful if a motor fan room overlapping, downwardly open and up to a blow-off closed insert portion is formed on the tubular part of the housing insert. In addition, it is expedient for design reasons, when the housing insert is covered by the cover designed as a housing upper part.

A further advantageous embodiment, in particular with slightly lower suction powers, is characterized in that the upper housing part is double-walled and that the inner wall forms the housing insert. This creates a simple, easy-to-manufacture construction. To further simplify the production, it is expedient if the upper housing part includes a motor housing area covering, upwardly substantially closed rear housing portion.

It is also advantageous if between the housing insert forming inner walls and housing sealing surfaces forming outer walls of the upper housing part vertical, in axial Direction of the housing insert extending outer ribs are arranged. As a result, a sufficient reinforcement of the dust collecting space is achieved even with a simple, easily demoulded rib structure.

Through the downwardly open structure of the housing insert, this can be provided on the inwardly facing surface with inner ribs which extend in the axial direction and the dust collection chamber interior and which are then easily demolded down. Due to the possible demoulding downwards, the housing insert may be bent or angled inwardly in the region of the opening directed towards the housing cover, and the inner fins may lie at least partially below the bent or angled region with respect to their extent directed to the dust collection chamber interior. The bending or bending of the housing insert causes it to nestle very closely against the outer sides of the housing upper part or the cover and therefore the available volume of construction is almost completely used as a dust collecting space. Only because of the demoulding possibility down, d. H. through the bottom opening of the housing insert can be equipped with such an angling or bending and still be provided with ribs.

Embodiments of the invention are shown purely schematically in the drawings and will be described in more detail below. It shows

Figure 1 shows a first embodiment of a vacuum cleaner 1 with open housing cover 5;

Figure 2 shows the multi-part device housing 2 of the vacuum cleaner 1 according to Figure 1 as an exploded view; Figure 3 shows the dust collection chamber 9 of the vacuum cleaner 1 according to Figure 1 with dust bag 12 in the side view in section; Figure 4 shows the dust collection chamber 9 of Figure 3 in a sectional view (section line IV - IV) without dust bag; Figure 5a to c first variants 30.1, 30.2 and 30.3 of a dust collection chamber seal with a seal 30 on the housing insert 23 (detail X); Figure 6a, b second variants 31.1 and 31.2 of a dust collection chamber seal with a seal 31 on the housing cover 5 (detail Y);

FIG. 7 shows the receptacle of the housing insert 23 in the U-profile 25 enclosing the bottom 9.1 of the dust collecting chamber 9 on the lower housing part 3 (detail Z); Figure 8 shows a second embodiment of a vacuum cleaner 101 in perspective view; FIG. 9 shows the multipart device housing 201 of the canister vacuum cleaner 101 according to FIG. 8 as an exploded view;

FIG. 1 shows a vacuum cleaner 1 with a multipart device housing 2. The device housing 2 consists essentially of a flat housing lower part 3 with an attached thereto downwardly open housing upper part 4. On the upper housing part 4, the housing cover 5 is pivotally mounted. Serve for this purpose, two hinge arms 6 (see Figure 2) in the rear region of the lid 5; The latter covers the engine fan chamber 7 in the closed state (see FIG. 2) and closes off the dust collection chamber 9 (see also FIGS. 3 and 4). In the upper housing part, an exhaust opening 8 is formed for the exhaust air from dem0 Motorgeblaseraum 7, in which an interchangeable exhaust air or hygiene filter 10 can be used. The dust collecting space 9 is open at the top and equipped with a receptacle 11 for a dust bag 12. The receptacle 11 is pivotally mounted in the dust collecting space 9 and has the same pivoting direction as the housing cover 5. On the housing cover 5, an adapter 13 for a suction hose 14, in the exemplary embodiment shown with a telescopic tube 15, respectively. The housing cover 5 is provided with an outlet opening 16 (see also FIG. 2) for the filtered exhaust air in the area in which it covers the exhaust opening 8 or the exhaust air or hygiene filter 10. The outlet opening 16 may be formed by air slots (not shown) in the housing cover 5 or provided with an insertable ventilation grille 17 which is flush with the surface of the housing cover 5 flush.

The structural design of the device housing is shown in more detail in an exploded view according to Figure 2 and in the sectional views of Figure 3 (longitudinal section) and Figure 4 (cross section). All housing parts are made by injection molding of plastic. The lower housing part 3 is designed as an upwardly open flat receiving tray with a partition 185 which divides the bottom area 7.1 for the motor fan room 7 with respect to the floor area 9.1 for the dust collecting space 9. On the underside of the lower housing part 3 rotatable skids 19 are used with rollers 20.

In assembly with the upper housing part 4, the lower housing part 3 forms the engine fan chamber 7 and the dust collection chamber 9. Thus, the dust collecting 9 im0 suction operation with closed housing cover 5 by the engine fan (not shown) withstand generated negative pressure, the upper housing part 4 is double-walled in the front part. The outer walls 21 form the housing sealing surfaces and the inner walls 22 form a downwardly and upwardly open, substantially tubular housing insert 23, which in turn generates the lateral walls of the dust collecting space 9. Between the inner walls 22 and the outer walls 23 vertical, extending in the axial direction of the housing insert outer ribs 24 are arranged. The inner walls 22 and thus the edge of the lower opening 27 of the housing insert 23 are enclosed by a circumferential seal in the housing bottom, which is preferably designed as a U-profile 25. In this way, the dust collecting space 9 is closed airtight down. The position of the peripheral seal arrangement is referred to in the sectional views of Figures 3 and 4 as a detail "Z", which is shown enlarged in Figure 7. In the exemplary embodiment shown, a pressure-tight assembly of the upper housing part and the lower housing part in the area of the dust collecting chamber is achieved solely by the design and coordination of the dimensional tolerances of the sealing surfaces. But it is also possible to provide additional sealing material.

The upper opening 26 of the housing insert 23 is closed by the housing cover 5. The housing insert 23 has a u- or v-shaped recess 28 enclosing the upper edge of the dust collecting space. The housing cover 5 has as its counterpart in the dust collecting chamber 9 or housing insert 23 occlusive area a circumferential vertical wall portion 29, which dips into the recess 28 and the dust collecting chamber 9 with closed housing cover 5 in the suction pressure-tight manner closes (see Figure 2 and Figure 3) , FIG. 4 shows, in a sectional view, two possible embodiments for sealing arrangements which ensure the pressure-tight closure. Detail "X" shows a variant in which a seal 30 is arranged in the recess 28. In the figures 5a to 5c are variously enlarged embodiments 30.1, 30.2 and 30.3 of this seal 30 shown. In the variant according to detail "Y", a seal 31 is arranged on the secant wall section 29 of the housing cover 5, for example by extrusion-coating of this section 29 in a 2k process. Two variants 31.1 and 31.2 are shown enlarged in FIGS. 6a and 6b.

A further reinforcement of the dust collecting space is provided by inner ribs 32 which are arranged on the inwardly facing surface of the housing insert 23 and extend in the axial direction and to the dust collection chamber interior. These internal ribs 32 are located either partially (FIG. 5a) or completely (FIGS. 5b, 5c, 6a and 6b) below the angled region 23.1 of the housing insert 23, which is generated by the inwardly directed leg of the recess 28, with respect to their extension directed toward the dust collection chamber interior becomes. Also, the inside of the dust collecting space bottom 9.1 may be provided with a rib structure 33.

In the area of the motor fan room 7, the upper housing part 4, with the exception of the outlet opening for the blow-out air (blow-out opening 8), is substantially closed at the top and open at the bottom. The upper housing part 4 covers the motor and the fan (both not shown) and forms with the bottom area with an intermediate layer a profile seal 34, the engine fan chamber 7, which is acted upon in the suction operation with respect to the outside air increased pressure.

At the top of the upper housing part, a separate cover 35 is attached, which receives the switching elements (not shown) of the on / off switch and the Saugleistungsregelung and also on their surface, the controls 36 for the

Suction power control contributes. The cover 35 is also formed with a passage opening for a switch plunger (not shown), which functions as a trigger for a Kabelaufwickelvorrichtung. The operating buttons 37 for the switching plunger and 38 for the on / off switch are pivotally mounted against spring force on the hinge arms 6 of the housing cover 5.

The housing cover 5 is pivotally mounted by means of its hinge arms 6 laterally on the cover 35 in a hinge bearing 39. The top of the cover 35 forms with the operation keys with the housing cover closed flush.

FIGS. 8 and 9 show a vacuum cleaner 101 with a device housing 102, in which a housing insert 40 (see FIG. 9) is used to generate the dust collecting space, which is designed as a separate component held free of housing sealing surfaces. As a result, can be mounted on the outside of a truss-like rib structure 41, which additionally stabilizes the dust collection chamber 9 and thus makes it suitable for the use of blowers with very high suction power. The housing insert 40 is covered by the upper housing part 4, which is designed here as a cover frame 42. In the embodiment shown, the housing cover 5 is constructed in two parts. A second cover 44, pivotally mounted on the first, closes an accessory compartment 45 integrated in the first cover. The sealing of the dust collection space 9 with respect to the housing bottom 3 and opposite the first cover 43 is analogous to the above-described embodiment.

Claims

claims

Device housing (2, 102) for a canister vacuum cleaner (1, 101), which is divided inside into a motor fan room (7) and into a dust collecting chamber (9), with a housing lower part (3), an upper housing part (4) and a Housing cover (5), wherein the dust collection space (9) on the housing cover (5) is closable, characterized in that - the housing lower part (3) is designed as a flat, upwardly open receiving tray having a partition wall (18) which the housing lower part (3) is subdivided into a bottom area (7.1) for the motor fan room (7) and a further floor area (9.1) for the dust chamber (9), and wherein the floor area (9.1) for the dust chamber (9) is enclosed by a seal and - that the lateral walls (22) of the dust collecting space (9) are formed by an upwardly and downwardly open, substantially tubular housing insert (23; 40), the lower edge of which in the bottom region (9.1) for the St Pickup chamber (9) enclosing seal is added.

2. Device housing (102) for a vacuum cleaner (101) according to claim 1, characterized in that the housing insert (40) is designed as a separate, held free from housing sealing surfaces component.

3. Device housing (102) for a vacuum cleaner (101) according to claim 2, characterized in that the housing insert (40) is provided on the outwardly directed surface with a truss-like rib structure (41).

4. Device housing (102) for a vacuum cleaner (101) according to at least one of claims 2 or 3, characterized in that on the tubular part of the housing insert (40) a motor fan room (7) overlapping, downwardly open and up to an outlet opening (8) closed insert portion is formed.

5. Device housing (102) for a vacuum cleaner (101) according to at least one of claims 2 to 4, characterized in that the housing insert (40) by the cover frame (42) formed housing upper part (4) is covered.

6. device housing (2) for a vacuum cleaner (1) according to claim 1, characterized in that the housing upper part (4) is double-walled and that the inner wall (22) forms the housing insert (23).

7. device housing (2) for a vacuum cleaner (1) according to claim 6, characterized in that the upper housing part (4) includes a motor fan room (7) covering, upwardly substantially closed rear housing portion.

Device housing (2) for a canister vacuum cleaner (1) according to at least one of claims 6 or 7, characterized in that between the housing insert (23) forming inner walls (22) and housing sealing surfaces forming outer walls (21) of the upper housing part (4) vertical, in the axial direction of the housing insert (23) extending outer ribs (24) are arranged.

Apparatus housing (2, 102) for a vacuum cleaner (1; 101) according to at least one of the preceding claims, characterized in that the housing insert (23; 40) is provided on the inwardly directed surface with internal ribs (32) which extend extend in the axial direction and to the dust collection chamber interior.

10. Apparatus housing (2, 102) for a vacuum cleaner (1, 101) according to claim 9, characterized in that the housing insert (23, 40) is bent or angled inwardly in the region of the opening (26) directed towards the housing cover (5) and that the inner ribs (32) lie at least partially below the bent or angled region (23.1) with respect to their extent directed towards the dust collection chamber interior.

Device housing (2) for a vacuum cleaner (1; 101) according to at least one of the preceding claims, characterized in that the housing section of the housing insert (23; 40) or housing upper part (4) covering the motor fan chamber (7) is provided with an outlet opening (8 ) is formed for the exhaust air from the engine fan chamber (7).

12. Device housing (2) for a vacuum cleaner (1) according to at least one of the preceding claims, characterized in that the housing cover (5) in the rear region (35) of the housing upper part (4) via hinge arms (6) is pivotally mounted and the engine fan room (7) at least in the area of the exhaust opening (8) covered.

13. Device housing (2, 102) for a vacuum cleaner (1, 101) according to at least one of the preceding claims, characterized in that the dust collecting space (9) enclosing seal on the lower housing part as a U-profile (25) is formed, in which vertical wall portion of the housing insert (23; 40) is sealingly received.

14. Device housing (2, 102) for a vacuum cleaner (1, 101) according to at least one of the preceding claims, characterized in that the housing insert (23, 40) has a recess (28) surrounding the edge of its upper opening (26), which is designed to receive a sealing material (30, 31).

15. Apparatus housing (2) for a vacuum cleaner (1; 101) according to claim 14, characterized in that a seal (30) is arranged in the depression (28) as sealing material.

16. Device housing (2, 102) for a vacuum cleaner (1, 101) according to claim 14, characterized in that a seal (31) is arranged on the housing cover (5), which is closed when the housing cover (5) is closed in the recess (28). dips.