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 Turbine fan of suction brush for vacuum cleanerUSPTO Application #: 20070271726Title: Turbine fan of suction brush for vacuum cleaner Abstract: The present disclosure relates to a turbine fan of a suction brush for a vacuum cleaner, which is driven by air entering the suction brush connected with a main body of the vacuum cleaner and is rotatably disposed inside the suction brush using a rotation shaft. The turbine fan comprises a boss coupled with the rotation shaft; a supporting disk disposed at an outer circumferential surface of the boss at a right angle to the boss; and a plurality of first and second wings disposed at both sides of the supporting disk, each of the plurality of first and second wings having a first end fixed on the outer circumferential surface of the boss and a second end being a free end. (end of abstract)
Agent: Ohlandt, Greeley, Ruggiero & Perle, LLP - Stamford, CT, US Inventor: Yun-hee Park USPTO Applicaton #: 20070271726 - Class: 15387 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20070271726. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001]This application claims the benefit under 35 U.S.C. .sctn.119(a) of Korean Patent Application No. 10-2006-0046415, filed May 24, 2006, the entire contents of which are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002]1. Field of the Invention [0003]The present disclosure relates to a turbine fan of a suction brush for a vacuum cleaner. More particularly, the present disclosure relates to a turbine fan of a suction brush for a vacuum cleaner using air drawn-in into the suction brush to rotate a drum brush or a cloth. [0004]2. Description of the Related Art [0005]Generally, a vacuum cleaner has a drum brush in contact with the surface to be cleaned that cleans dust from the surface. [0006]When the drum brush moves along the surface to be cleaned, the drum brush scrubs or hits the surface with a rotation force so as to separate dust from the surface. The dust separated from the surface is drawn-in into the inside of a main body of the vacuum cleaner by a suction force generated in the main body of the vacuum cleaner. Currently, a driving motor or a turbine unit supplies the drum brush with the rotation force. The driving motor is connected with the drum brush so as to selectively rotate the drum brush. Connecting the driving motor and the drum brush needs a complex structure so as to increase cost. As a result, currently it is mainly used a method that the turbine unit rotates the drum brush. [0007]A prior art suction brush 10 having a turbine fan 30 are shown in FIGS. 1 and 2. In the suction brush 10 using the turbine fan 30 to rotate a drum brush 20, the turbine fan 30 is disposed in a suction pathway 13 through which dust is drawn-in by the suction force generated in the main body (not shown) of the vacuum cleaner (not shown) as shown in FIG. 1. The turbine fan 30 is rotated by air drawing-in into the suction pathway 13. The rotation force of the turbine fan 30 is transmitted to the drum brush 20 via a belt 15. As a result, the drum brush 20 rotates in contact with the surface to be cleaned so as to scrub or hit dust stuck to the surface. The dust separated from the surface is drawn-in into the suction brush 10. [0008]Referring to FIG. 2, the conventional turbine fan 30 includes left and right turbine parts 31 and 33 formed to face each other. The left and right turbine parts 31 and 33 are detachably connected with each other using a connecting part 32 disposed at a center thereof. Each of the left and right turbine parts 31 and 33 has a circular supporting plate 31a and 33a and a plurality of wings 31b and 33b projecting from the circular supporting plate 31a and 33a at regular intervals. When assembling the left and right turbine parts 31 and 33, the plurality of wings 31b and 33b is assembled to deviate from each other as shown in FIG. 1. [0009]The conventional turbine fan 30 is secured between a top case 11 of the suction brush and a bottom case 12 of the suction brush by a rotation shaft 17 passing through a center of the turbine fan 30. [0010]Each of the left and right turbine parts 31 and 33 of the conventional turbine fan 30 are separately molded. The separately molded left and right turbine parts 31 and 33 are then assembled to form one turbine fan. [0011]However, when assemblers assembly the left and right turbine parts 31 and 33 into a turbine fan 30, the assemblers may not apply an uniform force to the left and right turbine parts 31 and 33 so that a center line of each of the left and right turbine parts 31 and 33 is not aligned and crosses each other at any angles. Also, because the left and right turbine parts 31 and 33 are in contact with each other via an outer circumferential surface of the connecting part 32 having a small area, it is difficult to accurately assembly the left and right turbine parts 31 and 33. [0012]Furthermore, assembly defects of the left and right turbine parts 31 and 33 cause the turbine fan 30 to lose a rotation balance. As a result, when the turbine fan 30 rotates, loud noise is generated. [0013]Also, because the plurality of wings 31b and 33b of the left and right turbine parts 31 and 33 is assembled to deviate from each other, thin and long dust such as hairs, etc are inclined to be caught between the plurality of wings 31b and 33b. As a result, when a lot of hairs are caught between the plurality of wings 31b and 33b after a long time use, the turbine fan 30 cannot rotate smoothly. SUMMARY OF THE INVENTION [0014]The present disclosure has been developed in order to overcome the above drawbacks and other problems associated with the conventional arrangement. An aspect of the present disclosure is to provide a turbine fan of a suction brush for a vacuum cleaner that can prevent loss of a rotation balance due to assembly defects. [0015]Another aspect of the present disclosure is to provide a turbine fan of a suction brush for a vacuum cleaner that can prevent thin and long dust from being caught between a plurality of wings so that the turbine fan can smoothly rotate. [0016]The above aspect and/or other feature of the present disclosure can substantially be achieved by providing a turbine fan of a suction brush for a vacuum cleaner, which is driven by air entering the suction brush connected with a main body of the vacuum cleaner and is rotatably disposed inside the suction brush using a rotation shaft. The turbine fan comprises a boss coupled with the rotation shaft; a supporting disk disposed at an outer circumferential surface of the boss at a right angle to the boss; and a plurality of first and second wings disposed at both sides of the supporting disk, each of the plurality of first and second wings having a first end fixed on the outer circumferential surface of the boss and a second end being a free end. [0017]The plurality of first and second wings is arranged symmetric with respect to the supporting disk so that the free ends of the plurality of first and second wings are aligned. [0018]The plurality of first and second wings is arranged at regular intervals. [0019]The supporting disk is preferably disposed at a middle of the boss. [0020]The boss, the plurality of first and second wings, and the supporting disk may be formed in a single body. For an example, the turbine fan may be formed in a single injection mold. [0021]On the other hand, the boss comprises first and second bosses; the supporting disk comprises first and second supporting disks disposed at an outer circumferential surface of each of the first and second bosses at a right angle to each of the first and second bosses; a side of each of the plurality of first wings is fixed to a side of the first supporting disk, a first end of each of the plurality of first wings is fixed to the outer circumferential surface of the first boss and a second end thereof is a free end; a side of each of the plurality of second wings is fixed to a side of the second supporting disk, a first end of each of the plurality of second wings is fixed to the outer circumferential surface of the second boss and a second end thereof is a free end; at least one connecting projection formed at the other side of the first supporting disk; and at least one connecting groove formed at the other side of the second supporting disk for coupling with the at least one connecting projection. When the first and second supporting disks are assembled each other, the first and second supporting disks are arranged between the plurality of first and second wings. [0022]The first and second supporting disks are preferably assembled so that the plurality of first and second wings is symmetric with respect to the first and second supporting disks thereby the free ends of the plurality of first and second wings being aligned. Continue reading... Full patent description for Turbine fan of suction brush for vacuum cleaner Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Turbine fan of suction brush for vacuum cleaner patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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