Turbine fan of suction brush for vacuum cleaner
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.
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This application claims the benefit under 35 U.S.C. §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 INVENTION1. Field of the Invention
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.
2. Description of the Related Art
Generally, a vacuum cleaner has a drum brush in contact with the surface to be cleaned that cleans dust from the surface.
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.
A prior art suction brush 10 having a turbine fan 30 are shown in
Referring to
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.
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.
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.
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.
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 INVENTIONThe 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.
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.
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.
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.
The plurality of first and second wings is arranged at regular intervals.
The supporting disk is preferably disposed at a middle of the boss.
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.
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.
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.
The first boss, the first supporting disk, the plurality of first wings, and the at least one connecting projection may be formed in a single body. The second boss, the second supporting disk, the plurality of second wings, and the at least one connecting groove may be formed in a single body.
The first boss, the first supporting disk, the plurality of first wings, and the at least one connecting projection may be formed in a single injection mold. The second boss, the second supporting disk, the plurality of second wings, and the at least one connecting groove may be formed in a single injection mold.
Other objects, advantages and salient features of the disclosure will become apparent from the following detailed description, which, taken in conjunction with the annexed drawings, discloses preferred embodiments of the disclosure.
These and/or other aspects and advantages of the disclosure will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
Throughout the drawings, like reference numerals will be understood to refer to like parts, components and structures.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTSHereinafter, certain exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The matters defined in the description, such as a detailed construction and elements thereof, are provided to assist in a comprehensive understanding of the disclosure. Thus, it is apparent that the present disclosure may be carried out without those defined matters. Also, well-known functions or constructions are omitted to provide a clear and concise description of exemplary embodiments of the present disclosure.
Referring to
The boss 41 has a penetrating hole 42 through which a rotation shaft 17 (see
The supporting disk 43 is connected with an outer circumferential surface of the boss 41 at a right angle to the boss 41. The supporting disk 43 connects and supports the plurality of first and second wings 45a and 46a. The supporting disk 43 has a width W2 that is much narrower than a width W1 of the turbine fan 40 as shown in
A first end of each of the plurality of first and second wings 45a and 46a is fixed on the outer circumferential surface of the boss 41 at a regular interval. A second end of each of the plurality of first and second wings is a free end 45b and 46b. A thickness of each of the plurality of first and second wings 45a and 46a gradually increases from the first end to the second end 45b and 46b so as to decrease resistance and noise of air crashing against the plurality of first and second wings 45a and 46a. Each of the plurality of first and second wings 45a and 46a is formed in a curved surface with a predetermined curvature and is arranged at a regular interval. Also, the plurality of first and second wings 45a and 46a is arranged symmetric with respect to the supporting disk 43 so that the second ends 45b and 46b of the plurality of first and second wings 45a and 46a are aligned.
Advantageously, the boss 41, the supporting disk 43, and the plurality of first and second wings 45a and 46a are integrally formed. For an example, it is preferable to form those as a single injection mold.
In this embodiment described above, the turbine fan 40 is described, for example, rotating a drum brush 20 (see
Referring to
The first body 50a includes a first boss 51a, a first supporting disk 53a, a plurality of first wings 55a, and a connecting projection 58a and is formed in a single body as shown in
The first boss 51a has, at a center, a penetrating hole (not shown) at which a rotation shaft 17 (see
Similarly, the second body 50b includes a second boss 51b, a second supporting disk 53b, a plurality of second wings 56a, and a connecting groove 58b, and is formed in a single body.
The second boss 51b has, at a center, a penetrating hole (not shown) at which the rotation shaft 17 (see
The first and second bodies 50a and 50b are respectively integrally formed. Each of the first and second bodies 50a and 50b is preferably formed in a single injection mold.
On the other hand, the turbine fan 50 according to the second embodiment has a wider contact area than the conventional turbine fan 30 when assembled. In other words, when the conventional turbine fan 30 is assembled, the contact area between the left and right turbine parts 31 and 33 is only the outer circumferential surface of the connecting part 32, but when the turbine fan 50 according to the second embodiment is assembled, the contact area between the first and second bodies 50a and 50b is not only the outer circumferential surface of the connecting projection 58a but also a contact surface 55c and 56c of the first and second supporting disks 53a and 53b. Therefore, when the turbine fan 50 is assembled, the first body 50a and the second body 50b are stably coupled in a straight line. As a result, when the first and second bodies 50a and 50b are assembled, the turbine fan 50 does not lose a rotation balance so that, when the turbine fan 50 rotates, noise does not occur due to unbalance of the turbine fan 50.
In the turbine fan according to an embodiment of the present disclosure, there does not occur assembly defects when assembling the first and second bodies. Therefore, the turbine fan does not lose the rotation balance due to assembly defects.
Also, because the turbine fan according to an embodiment of the present disclosure does not have the structure in that the plurality of wings of the first and second bodies deviates from each other, the turbine fan can prevent thin and long dust such as hairs from being caught between the plurality of wings. Therefore, the turbine fan can smoothly rotate.
While the embodiments of the present disclosure have been described, additional variations and modifications of the embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims shall be construed to include both the above embodiments and all such variations and modifications that fall within the spirit and scope of the disclosure.
Claims
1. A suction brush for a vacuum cleaner, comprising:
- a top suction brush case;
- a bottom suction brush case; and
- a turbine fan rotatably disposed inside the top and bottom suction brush cases using a rotation shaft, the turbine fan being driveable by air entering the suction brush, the turbine fan comprising:
- 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.
2. The suction brush of claim 1, wherein 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.
3. The suction brush of claim 1, wherein the plurality of first and second wings is arranged at regular intervals.
4. The suction brush of claim 1, wherein the supporting disk is disposed at a middle of the boss.
5. The suction brush of claim 1, wherein the boss, the plurality of first and second wings, and the supporting disk are formed in a single body.
6. The suction brush of claim 1, wherein the turbine fan comprises a single injection mold.
7. The suction brush of claim 1, wherein the turbine fan comprises a first body and a second body so that 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;
- wherein 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.
8. The suction brush of claim 7, wherein the first and second supporting disks are 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.
9. The suction brush of claim 7, wherein the first boss, the first supporting disk, the plurality of first wings, and the at least one connecting projection are formed in a single body,
- wherein the second boss, the second supporting disk, the plurality of second wings, and the at least one connecting groove are formed in a single body.
10. The suction brush of claim 7, wherein the first boss, the first supporting disk, the plurality of first wings, and the at least one connecting projection are formed in a single injection mold;
- wherein the second boss, the second supporting disk, the plurality of second wings, and the at least one connecting groove are formed in a single injection mold.
Type: Application
Filed: Nov 16, 2006
Publication Date: Nov 29, 2007
Applicant:
Inventor: Yun-hee Park (Gwangju-city)
Application Number: 11/600,648
International Classification: A47L 9/04 (20060101);