U.S. patent application number 13/707434 was filed with the patent office on 2013-11-28 for impeller for electric blower.
This patent application is currently assigned to SAMSUNG ELECTRO-MECHANICS CO., LTD.. The applicant listed for this patent is SAMSUNG ELECTRO-MECHANICS CO., LTD.. Invention is credited to Yong Wan Cho.
Application Number | 20130315743 13/707434 |
Document ID | / |
Family ID | 47560676 |
Filed Date | 2013-11-28 |
United States Patent
Application |
20130315743 |
Kind Code |
A1 |
Cho; Yong Wan |
November 28, 2013 |
IMPELLER FOR ELECTRIC BLOWER
Abstract
Disclosed herein is an impeller for an electric blower
including: an upper plate; a lower plate; and a blade positioned
between the upper plate and the lower plate, wherein the lower
plate includes a burring part formed at an inner diameter portion
thereof to which a shaft is insertedly coupled. In addition,
disclosed herein is an impeller for an electric blower including:
an upper plate; a lower plate; and a blade positioned between the
upper plate and the lower plate, wherein the lower plate includes a
burring part formed at an inner diameter portion thereof to which a
shaft is insertedly coupled and a washer part extended in a
direction perpendicular to the burring part.
Inventors: |
Cho; Yong Wan; (Suwon,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
Suwon |
|
KR |
|
|
Assignee: |
SAMSUNG ELECTRO-MECHANICS CO.,
LTD.
Suwon
KR
|
Family ID: |
47560676 |
Appl. No.: |
13/707434 |
Filed: |
December 6, 2012 |
Current U.S.
Class: |
416/214R |
Current CPC
Class: |
F04D 29/281 20130101;
F04D 29/263 20130101 |
Class at
Publication: |
416/214.R |
International
Class: |
F04D 29/28 20060101
F04D029/28 |
Foreign Application Data
Date |
Code |
Application Number |
May 25, 2012 |
KR |
10-2012-0056257 |
Claims
1. An impeller for an electric blower comprising: an upper plate; a
lower plate; and a blade positioned between the upper plate and the
lower plate, wherein the lower plate includes a burring part formed
at an inner diameter portion thereof to which a shaft is insertedly
coupled.
2. The impeller as set forth in claim 1, wherein the burring part
is protruded so that the inner diameter portion of the lower plate
into which the shaft is inserted stands up vertically toward the
upper plate.
3. The impeller as set forth in claim 1, wherein the shaft is
insertedly coupled to the burring part of the lower plate, and the
nut is screw-coupled to an upper end portion of the shaft so as to
be positioned at an upper end portion of the burring part.
4. The impeller as set forth in claim 1, further comprising
auxiliary members positioned at an inner diameter portion of the
impeller to which the shaft is coupled.
5. The impeller as set forth in claim 4, wherein the auxiliary
members are coupled to both surfaces of the lower plate, having the
lower plate therebetween, and an upper surface of the auxiliary
member positioned on an upper surface of the lower plate is fixed
by the nut.
6. An impeller for an electric blower comprising: an upper plate; a
lower plate; and a blade positioned between the upper plate and the
lower plate, wherein the lower plate includes a burring part formed
at an inner diameter portion thereof to which a shaft is insertedly
coupled and a washer part extended in a direction perpendicular to
the burring part.
7. The impeller as set forth in claim 6, wherein the burring part
is protruded so that the inner diameter portion of the lower plate
into which the shaft is inserted stands up vertically toward the
upper plate, and the washer part is extended in the direction
perpendicular to the burring part so as to contact the lower
plate.
8. The impeller as set forth in claim 6, wherein the shaft is
insertedly coupled to the burring part of the lower plate, and the
nut is screw-coupled to an upper end portion of the shaft so as to
be positioned at an upper end portion of the burring part.
9. The impeller as set forth in claim 6, further comprising
auxiliary members positioned at an inner diameter portion of the
impeller to which the shaft is coupled.
10. The impeller as set forth in claim 9, wherein the auxiliary
member is coupled to one surface of the lower plate facing the
washer part.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of Korean Patent
Application No. 10-2012-0056257, filed on May 25, 2012, entitled
"Impeller for Electric Blower", which is hereby incorporated by
reference in its entirety into this application.
BACKGROUND OF THE INVENTION
[0002] 1. Technical Field
[0003] The present invention relates to an impeller for an electric
blower.
[0004] 2. Description of the Related Art
[0005] Generally, an impeller for an electric blower is used in a
state in which it is connected to a motor in order to suck a fluid.
More specifically, an upper portion of a fan-motor for a vacuum
cleaner is provided with an impeller that is a centrifugal fan for
air suction, wherein the impeller is connected to a shaft of a
driving motor to thereby rotate.
[0006] However, as disclosed in the following Prior Art Document,
an impeller according to the prior art includes an upper plate, a
lower plate, and a blade; however, the upper plate, the lower
plate, and the blade are separately manufactured and then coupled
to each other, such that stress due to centrifugal force and
aerodynamic force is concentrated on a coupling part at the time of
rotation of the impeller. Therefore, the coupling part may be
damaged due to the concentration of the stress at the time of
high-speed rotation of the impeller.
[0007] In addition, the impeller for an electric blower according
to the prior art has a thin thickness, such that a change in inner
diameter thereof is large at the time of process measurement and
assembling treatment. Particularly, in the case of coupling a shaft
to the impeller, abrasion occurs at a shaft coupling part of the
impeller and eccentricity occurs at the time of assembling, such
that a motor is driven in an unbalanced form and the coupling part
is not firm, thereby deteriorating firmness and stability.
PRIOR ART DOCUMENT
Patent Document
[0008] (Patent Document 1) JP2003-269391 A
SUMMARY OF THE INVENTION
[0009] The present invention has been made in an effort to provide
an impeller for an electric blower including a burring part formed
at an inner diameter portion thereof to which a shaft is coupled to
allow the burring part and an outer peripheral surface of the shaft
to be in contact with each other in the case in which the shaft is
insertedly coupled to the impeller, such that a contact area
between the shaft and the impeller increases by the burring part,
thereby making it possible to prevent coupling force deterioration
and unbalance due to abrasion at the time of an assembling process,
simplify the assembling process, and make a coupling structure the
impeller for an electric blower and the shaft more firm.
[0010] Further, the present invention has been made in an effort to
provide an impeller for an electric blower including shaft coupling
parts formed at an inner diameter portion thereof to which a shaft
is coupled and including a burring part and a washer part to allow
the burring part and an outer peripheral surface of the shaft to be
in contact with each other in the case in which the shaft is
insertedly coupled to the impeller, such that a contact area
between the shaft and the impeller increases by the burring part',
thereby making it possible to prevent coupling force deterioration
and unbalance due to abrasion at the time of an assembling process
and simplify the assembling process, and that a nut fixed to the
shaft is supported by the washer part to allow the impeller to be
implemented without a separate washer, thereby making it possible
to reduce a manufacturing cost, improve productivity, and make a
coupling structure between the impeller for an electric blower and
the shaft more firm.
[0011] According to a preferred embodiment of the present
invention, there is provided an impeller for an electric blower
including: an upper plate; a lower plate; and a blade positioned
between the upper plate and the lower plate, wherein the lower
plate includes a burring part formed at an inner diameter portion
thereof to which a shaft is insertedly coupled.
[0012] The burring part may be protruded so that the inner diameter
portion of the lower plate into which the shaft is inserted stands
up vertically toward the upper plate.
[0013] The shaft may be insertedly coupled to the burring part of
the lower plate, and the nut may be screw-coupled to an upper end
portion of the shaft so as to be positioned at an upper end portion
of the burring part.
[0014] The impeller may further include auxiliary members
positioned at an inner diameter portion of the impeller to which
the shaft is coupled.
[0015] The auxiliary members may be coupled to both surfaces of the
lower plate, having the lower plate therebetween, and an upper
surface of the auxiliary member positioned on an upper surface of
the lower plate may be fixed by the nut.
[0016] According to another preferred embodiment of the present
invention, there is provided an impeller for an electric blower
including: an upper plate; a lower plate; and a blade positioned
between the upper plate and the lower plate, wherein the lower
plate includes a burring part formed at an inner diameter portion
thereof to which a shaft is insertedly coupled and a washer part
extended in a direction perpendicular to the buning part.
[0017] The burring part may be protruded so that the inner diameter
portion of the lower plate into which the shaft is inserted stands
up vertically toward the upper plate, and the washer part may be
extended in the direction perpendicular to the burring part so as
to contact the lower plate.
[0018] The shaft may be insertedly coupled to the burring part of
the lower plate, and the nut may be screw-coupled to an upper end
portion of the shaft so as to be positioned at an upper end portion
of the burring part.
[0019] The impeller may further include auxiliary members
positioned at an inner diameter portion of the impeller to which
the shaft is coupled.
[0020] The auxiliary member may be coupled to one surface of the
lower plate facing the washer part.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and other objects, features and advantages of the
present invention will be more clearly understood from the
following detailed description taken in conjunction with the
accompanying drawings, in which:
[0022] FIG. 1 is a cross-sectional view schematically showing a
state in which an impeller for an electric blower according to a
first preferred embodiment of the present invention is coupled to a
shaft;
[0023] FIG. 2 is a schematic exploded perspective view of the
impeller for an electric blower and a shaft module shown in FIG.
1;
[0024] FIG. 3 is a cross-sectional view schematically showing a
state in which an impeller for an electric blower according to a
second preferred embodiment of the present invention is coupled to
a shaft; and
[0025] FIG. 4 is a schematic exploded perspective view of the
impeller for an electric blower and a shaft module shown in FIG.
3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0026] The objects, features and advantages of the present
invention will be more clearly understood from the following
detailed description of the preferred embodiments taken in
conjunction with the accompanying drawings. Throughout the
accompanying drawings, the same reference numerals are used to
designate the same or similar components, and redundant
descriptions thereof are omitted. Further, in the following
description, the terms "first", "second", "one side", "the other
side" and the like are used to differentiate a certain component
from other components, but the configuration of such components
should not be construed to be limited by the terms. Further, in the
description of the present invention, when it is determined that
the detailed description of the related art would obscure the gist
of the present invention, the description thereof will be
omitted.
[0027] Hereinafter, preferred embodiments of the present invention
will be described in detail with reference to the attached
drawings.
[0028] FIG. 1 is a cross-sectional view schematically showing a
state in which an impeller for an electric blower according to a
first preferred embodiment of the present invention is coupled to a
shaft; and FIG. 2 is a schematic exploded perspective view of the
impeller for an electric blower and a shaft module shown in FIG.
1.
[0029] As shown in FIGS. 1 and 2, the impeller 100 for an electric
blower includes a shaft 200 insertedly coupled to an inner diameter
portion thereof, whereby the shaft 200 is fixedly coupled to the
impeller 100 by a nut 300.
[0030] To this end, an upper end portion of the shaft 200 is formed
with a screw coupling part 210 at which a screw thread is formed,
and the nut 300 is coupled to the screw coupling part 210 of the
shaft 200 in a state in which the shaft 200 is inserted into an
inner diameter portion of the impeller 100, such that the shaft 200
is fixedly coupled to the impeller 100.
[0031] Further, in order to improve firmness at a coupling part
between the shaft and the impeller, the impeller 100 for an
electric blower may further include auxiliary members 400
positioned at the inner diameter portion of the impeller 100 to
which the shaft is coupled.
[0032] More specifically, the impeller 100 for an electric blower
is configured to include an upper plate 110, a lower plate 120, and
a blade 130 positioned between the upper plate 110 and the lower
plate 120.
[0033] In addition, the lower plate 120 includes a burring part 121
formed at an inner diameter portion thereof to which the shaft 200
is coupled, as shown in more detail in an enlarged view of FIG. 1.
The burring part 121, which is to increase a contact area with the
shaft 200 to make management of concentricity easy and improve
firmness in the case in which the shaft 200 is insertedly coupled
thereto, is protruded so that the inner diameter portion of the
lower plate into which the shaft is inserted stands up vertically
toward the upper plate 110.
[0034] In addition, the shaft 200 is insertedly coupled to the
burring part 121, and the nut 300 is screw-coupled to the screw
coupling part 210 positioned at the upper end portion of the shaft
200 so as to be positioned at an upper end portion of the burring
part 121.
[0035] Further, the auxiliary members 400 are coupled to both
surfaces of the lower plate 120 of the impeller 100 for an electric
blower to which the shaft is inserted, having the lower plate 120
therebetween. Further, an upper surface of the auxiliary member 400
positioned on an upper surface of the lower plate 120 is supported
by the nut 300.
[0036] The impeller 100 for an electric blower according to the
first preferred embodiment of the present invention includes the
burring part 121 formed at the inner diameter portion thereof to
which the shaft 200 is coupled to allow the burring part 121 and an
outer peripheral surface of the shaft to be in contact with each
other in the case in which the shaft is insertedly coupled to the
impeller 100, such that a contact area between the shaft 200 and
the impeller 100 increases by the burring part 121, thereby making
it possible to prevent coupling force deterioration and unbalance
due to abrasion at the time of an assembling process, simplify the
assembling process, and obtain a more firm coupling structure
between the impeller for an electric blower and the shaft.
[0037] FIG. 3 is a cross-sectional view schematically showing a
state in which an impeller for an electric blower according to a
second preferred embodiment of the present invention is coupled to
a shaft. As shown in FIG. 3, the impeller 100' for an electric
blower is different only in a coupling part with a shaft from the
impeller 100 for an electric blower according to the first
preferred embodiment of the present invention shown in FIG. 1.
[0038] More specifically, the impeller 100' for an electric blower
includes a shaft 200 insertedly coupled to an inner diameter
portion thereof, whereby the shaft 200 is fixedly coupled to the
impeller 100' by a nut 300.
[0039] To this end, an upper end portion of the shaft 200 is formed
with a screw coupling part 210 at which a screw thread is formed,
and the nut 300 is coupled to the screw coupling part 210 of the
shaft 200 in a state in which the shaft 200 is inserted into the
impeller 100', such that the shaft 200 is fixedly coupled to the
impeller 100'.
[0040] In order to improve firmness at a coupling part between the
shaft and the impeller, the impeller 100' for an electric blower
may further include an auxiliary member 400 positioned at the inner
diameter portion of the impeller 100' to which the shaft is
coupled.
[0041] Here, only a signal auxiliary member 400 may be provided and
mounted so as to be supported at a lower portion of the impeller
100', unlike a shaft coupling structure of the impeller 100 for an
electric blower according to the first preferred embodiment of the
present invention. The reason is that a washer part 121b' of a
shaft coupling part formed at the inner diameter portion of the
impeller 100' to which the shaft 200 is coupled also serves as an
auxiliary member.
[0042] More specifically, the impeller 100' for an electric blower
is configured to include an upper plate 110', a lower plate 120',
and a blade 130'.
[0043] In addition, the lower plate 120' includes shaft coupling
parts 121a' and 121b' formed at an inner diameter portion thereof
to which the shaft 200 is coupled, as shown in more detail in an
enlarged view of FIG. 3. In addition, the shaft coupling part
includes the burring part 121a' and the washer part 121b'.
[0044] In addition, the burring part 121a', which is to increase a
contact area with the shaft 200 to make management of concentricity
easy and improve firmness in the case in which the shaft 200 is
insertedly coupled thereto, is protruded so that the inner diameter
portion of the lower plate 120' of the impeller 100' for an
electric blower into which the shaft is inserted stands up
vertically toward the upper plate.
[0045] Further, the washer part 121b', which serves as a washer in
the case in which the nut 300 is coupled to the screw coupling part
210 of the shaft 200, is formed to be extended in a direction
perpendicular to the burring part 121a' standing up so as to
contact the shaft.
[0046] In addition, the washer part 121b' is positioned so as to
contact the lower plate and has the nut 300 positioned thereon in
the case in which it is fixed by the nut 300.
[0047] Further, the washer part 121b' may be formed by compressing
an end portion of a protruded burring part.
[0048] Further, the auxiliary member 400 is coupled to one surface
of the lower plate facing the washer part 121a'.
[0049] The impeller 100' for an electric blower according to the
second preferred embodiment of the present invention includes the
shaft coupling parts formed at the inner diameter portion thereof
to which the shaft 200 is coupled and including the burring part
121a' and the washer part 121b' to allow the burring part 121a' and
an outer peripheral surface of the shaft to be in contact with each
other in the case in which the shaft is insertedly coupled to the
impeller 100', such that a contact area between the shaft 200 and
the impeller 100' increases by the burring part 121a', thereby
making it possible to prevent coupling force deterioration and
unbalance due to abrasion at the time of an assembling process and
simplify the assembling process, and that the nut fixed to the
shaft is supported by the washer part 121b' to allow the impeller
to be implemented without a separate washer, thereby making it
possible to reduce a manufacturing cost, improve productivity, and
obtain a more firm coupling structure between the impeller for an
electric blower and the shaft.
[0050] As set forth above, with the impeller for an electric blower
according to the preferred embodiments of the present invention,
the upper plate is coupled to the lower plate formed integrally
with the blade, thereby making it possible to simplify a
manufacturing process and increase productivity. In addition, the
impeller is made of a thermoplastic material, thereby making it
possible to reduce a manufacturing cost. Further, the lower plate,
the blade, and the upper blade are injection-molded integrally with
each other, thereby making it possible to reduce stress
concentration and improve strength of the impeller.
[0051] Although the embodiments of the present invention have been
disclosed for illustrative purposes, it will be appreciated that
the present invention is not limited thereto, and those skilled in
the art will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention.
[0052] Accordingly, any and all modifications, variations or
equivalent arrangements should be considered to be within the scope
of the invention, and the detailed scope of the invention will be
disclosed by the accompanying claims.
* * * * *