WO2008114301B1

WO2008114301B1 - Nozzle unit with variable geometry for vacuum cleaners in general

Info

Publication number: WO2008114301B1
Application number: PCT/IT2008/000167
Authority: WO
Inventors: Pierantonio Milanese
Original assignee: Euroflex SRL
Current assignee: Euroflex SRL
Priority date: 2007-03-16
Filing date: 2008-03-13
Publication date: 2008-11-06
Anticipated expiration: 2009-09-16
Also published as: ITPD20070096A1; CN101677729B; CN101677729A; WO2008114301A1

Abstract

It is a new nozzle unit (B) formed by a main rotating body (C) with a generically triangular shape on which three radial spokes (R) are pivotally attached that can rotate around said main body while remaining always in contact with the floor. Each spoke (R) has one or more elastic elements (E) suitable to keep the spokes (R) in a generically y-shaped configuration. The main body (C) is provided with a coupling (A) on its upper part to both connect the suction pipe and to enable the main body (C) to make a full rotation horizontally with reference to the coupling (A). Each spoke (R) is hinged to said main body (C) and the rotation of the main body (C) around the coupling (A) enables the new nozzle unit (B) to adjust to the various operational situations and to various possible obstacles so as to avoid that the user makes any manoeuvre with the pipe with handle.

Claims

AMENDED CLAIMS received by the International Bureau on 05 September, 2008 (05.09.08)CLAIMS

1. A nozzle unit (B) with a coupling (A) for the connection to Hie suction pipe of the vacuum cleaner, comprising a hollow main body (C) connected to said coupling (A) to which at least three spokes are hinged (R1, R2, R3), genericatly linear, hollow, open at the bottom and usually arranged to form a Y around said main body (C), characterised by the fact that said spokes are connected to the internal compartment (Cc) of the main body (C) and rotating on the coplanar plane to said main body (C), and where said coupling (A) and said main body (C) mutually rotate around a vertical axis central to the coupling (A).

2. A nozzle unit (B) as in the previous claims, characterised in that each spoke (Rl, R2, R3) has one closed end (Re) and one open end (Ra) and the latter is suitable to be hosted and rotate in the housings and seats (Cr) of the main body (C),

3. A nozzle unit (B) as in the previous claims, characterised in that said mam body (C) has a genetically triangular shape, and where said spokes (Rl, R2. R3) are hinged in special scats (Cr) located at the vertexes of the triangular shape of said main body (C).

4. A nozzle unit (B) as in the previous claim, characterised in that said spokes (Rl, R2, R3) are usually oriented along the generic directions of the bisecting lines of the triangular shape of said main body (C).

5. A nozzle unit (B) as in the previous claims, characterised in that each, spoke (Rl, R2, R3) has one closed end (Re) and one open end (Ra) that can be hosted and rotate in the housings and seats (Cr) of the main body (C) and can communicate with, the internal compartment (Cc) of said main body (C). and where each spoke (R1, R2, R3) has inner baffles, walls (Rt) or slots provided at the bottom with brushes or other devices to collect dirt that define a central area (Rc) enclosed between its external walls, connected wi1ib the open end (Ra).

6. A nozzle unit (B) as in the previous claims, characterised in that each of said spokes (Rl, R2, R3) has an amplitude of movement of rfc60 degrees in its own seat (Cr) of said main body (C).

7. A nozzle unit (B) as in the previous claims, characterised in that said seats (Cr) of said main body (C) are arranged so as to form an, equilateral triangle.

S. A nozzle unit (B) as in the previous claim, characterised in that said seats (Cr) of said main body (C) are arranged to form an isosceles triangle.

9, A nozzle unit (B) as in the previous claims, characterised in that one or more elastic elements (E) keep and bring back said spokes (Rl, R2_f R3) to a genericaUy radial arrangement with reference to the coupling (A).

10. A nozzle unit (B) as in the previous claim, characterised in that said one or more elastic elements (B) keep and bring back said spokes (Rl, R2, R3) to a position of 120 degrees between each other.

11. A nozzle unit (B) as in the previous claims, characterised in that said spokes (R1, R2, R3) have the same length.

12. A nozzle unit (B) as in one or more claims from 1 to 10, characterised in that at least one of said, spokes (R1, R2, R3) has a different length.

13. A nozzle unit (B) as in the previous claims, characterised in that said coupling (A) is in the middle of the triangular shape of said main body (C).

14. A nozzle unit (B) as _n the previous claims, characterised in that said coupling (A) is not in the middle of the triangular shape of said main body (C).

15. A nozzle unit (B) as in. the previous claims, characterised in that said coupling (A) is provided with a wall or baffle (A3) generically vertical and located inside the central compartment (Cc) of the main body (C), and where the shape, dimensions and position of said wall or baffle (A3) completely or partially shut the open end (Ra) of one spoke (R).

16. A nozzle unit (B) as in the previous claims, characterised in that said wall or baffle (A3) completely or partially shuts the open end (Ra) of the spoke (R3) that is dragged and looks into the opposite-direction of the one in which the new nozzle unit (B) moves.

17. A nozzle unit (B) as in the previous claims, characterised in that said main body (C) and said coupling (A) are provided with, an clement or mechanism to prevent their mutual rotation.

IS. A nozzle unit (B) as in the previous claim, characterised in that said element or mechanism that prevents the mutual rotation between the main body (C) and the coupling (A) can be operated by the user by means of levers or controls.

19. A nozzle unit (B) as in claims 17, 18, characterised in that said element or mechanism that prevents the rotation allows the locking between the main body (C) and the coupling (Λ) in a position in which two spokes (R1, R2) axe genetically looking sideways and forward and the third spoke (R3) is oriented in the opposite direction of the one in which the new nozzle unit (B) moves,

20. A nozzle unit (B) as in claims 17, 18. characterised in that said element or mechanism that prevents the rotation allows the locking between the main body (C) and the coupling (A) in a position in which the new nozzle unit (B) has a spoke (R3) looking in the direction in which the new nozzle unit (B) moves.