US20130343884A1 - Impeller of Cooling Fan - Google Patents
Impeller of Cooling Fan Download PDFInfo
- Publication number
- US20130343884A1 US20130343884A1 US13/746,422 US201313746422A US2013343884A1 US 20130343884 A1 US20130343884 A1 US 20130343884A1 US 201313746422 A US201313746422 A US 201313746422A US 2013343884 A1 US2013343884 A1 US 2013343884A1
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- United States
- Prior art keywords
- impeller
- metal base
- assembling
- cooling fan
- flat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
- F04D25/064—Details of the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
Definitions
- the present invention generally relates to an impeller of cooling fan and, more particularly, to an impeller suitable for thin cooling fan.
- cooling fans disposed inside miniaturized electrical devices to drive air currents for cooling have to be smaller than conventional fans.
- the size of an impeller in a cooling fan becomes a critical feature of whether the cooling fan is suitable to be applied in a miniaturized electrical device.
- Taiwan Patent No. 1293106 entitled as “Thin-Type Fan,” is shown.
- the invention is about a conventional cooling fan 8 including a base 81 , an impeller 82 , a magnetic plate 83 and a shaft 84 .
- the base 81 has a central hole 811 and a coil unit 812 .
- the impeller 82 has a plurality of bent blades 821 .
- the magnetic plate 83 is mounted on the bottom of the impeller 82 .
- the shaft 84 rotatably inserts into the central hole 811 of the base 81 with one end and fixedly couples with the impeller 82 with the other end. With the above arrangement, the impeller 82 of this conventional cooling fan 8 is thin and suitable to be applied in kinds of miniaturized electrical devices.
- the impeller 82 of cooling fan 8 is conventionally made by punching a metal plate into the shape of an impeller with the outer periphery of the metal plate being bent to form the blades 821 .
- the impeller 82 made of the metal plate is thin, the manufacturing process of the impeller 82 is complex and a large amount of metal is needed, such that manufacturing cost of this impeller 82 is large.
- the choices in shape and inclination of the blades 821 are few since the blades 821 are formed by punching, so that it is impossible to greatly enhance the air-driving performance by modifying the shape or inclination of the blades 821 .
- the metal impeller 82 is much heavier than others made of plastic, and this may result in high loading in weight and further affect rotational performance. Finally, it is difficult to bend the blades 821 formed by punching into identical shapes, and thus air-driving and rotational balance performances are lowered too.
- This patent discloses a thin impeller that is a common impeller design currently available in the market. It discloses that a rotor 9 has a metal housing 91 , a shaft 92 coupled to a center of the metal housing 91 , a metal blade frame 93 extending outwards from the periphery of the metal housing 91 in a radial direction of the rotor 9 , and a plastic blade portion 94 fixed with the metal blade frame 93 .
- the rotor 9 is mainly constructed by the metal housing 91 and the metal blade frame 93 , a desirable structural strength of the rotor 9 is provided. Moreover, due to the plastic blade portion 94 for air driving, which is easy to be uniformly formed by injection molding, the rotor 9 has advantages such as easy fabrication, low manufacturing cost and desirable air-driving performance. Accordingly, the rotor 9 is thin as well as strong.
- the metal housing 91 it is not flat from a center part of the metal housing 91 by which the metal housing 91 couples with the shaft 92 to the outer periphery of the metal blade frame 93 where the plastic blade portion 94 couples with.
- the periphery of the metal housing 91 has a hub portion 95 axially bulging relative to the metal blade frame 93 , which results in a large axial thickness of the rotor 9 . Therefore, due to the metal housing 91 having an increased thickness, the rotor 9 inside an electrical device may become a stumbling block of axial miniaturization of the electrical device. As a result, it is necessary to improve the conventional rotors.
- One embodiment of the invention discloses an impeller of a cooling fan, which includes a metal base, a shaft and a plurality of plastic blades.
- the metal base includes a shaft-coupling portion, a first assembling portion apart from the shaft-coupling portion, and a flat portion between the shaft-coupling portion and the first assembling portion, wherein the flat portion oppositely has a first flat surface and a second flat surface, and a permanent magnet is mounted on the first flat surface.
- the shaft has a fixing end coupled with the shaft-coupling portion of the metal base.
- Each of the plastic blades has a second assembling portion coupled with the first assembling portion of the metal base.
- the second assembling portions jointly form an enclosing ring coupled with the first assembling portion of the metal base.
- the first assembling portion of the metal base has a plurality of through holes, and the second assembling portions of the plastic blades fill up the through holes.
- the through holes are arranged in a circular route adjacent to a periphery of the metal base, and any adjacent two of the through holes are spaced out a predetermined distance apart.
- the first assembling portion of the metal base has a plurality of saw teeth at a periphery of the metal base, and the second assembling portions of the plastic blades couple with the saw teeth at the periphery of the metal base.
- the first assembling portion of the metal base has an inclined section forming the periphery of the metal base, and the second assembling portions of the plastic blades couple with the inclined section of the first assembling portion of the metal base.
- the second assembling portions couple with the inclined section of the first assembling portion by covering both of first and second surfaces of the inclined section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
- a through hole is disposed in the inclined section and extends from a first surface of the inclined section to a second surface of the inclined section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
- the first assembling portion of the metal base has a stair section, and the second assembling portions of the plastic blades couple with the stair section of the first assembling portion of the metal base.
- the second assembling portions couple with the stair section of the first assembling portion by covering both of first and second surfaces of the stair section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
- the stair section includes a radial extension and an axial extension linking the flat portion and the radial extension.
- through holes are disposed in at least one of the axial and radial extensions of the stair section and extend from a first surface of the stair section to a second surface of the stair section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
- the flat portion and the first assembling portion are coplanar.
- the flat portion and the first assembling portion are non-coplanar.
- the flat portion in an axial direction of the shaft-coupling portion of the metal base, the flat portion has a first axial thickness, the first assembling portion has a second axial thickness, and a ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 8.5, and the ratio of the second axial thickness to the first axial thickness preferably falls in a range between 1.1 and 4.
- the first and second flat surfaces are uncovered or covered with a plastic or rustproof layer.
- an axial end face of the fixing end is at a same level of or is lower than the second flat surface.
- FIG. 1 is a perspective and exploded view of a conventional thin-type fan.
- FIG. 2 is a cross-sectional view of the conventional thin-type fan.
- FIG. 3 is a cross-sectional view of a conventional thin-type fan rotor.
- FIG. 4 is a perspective view of an impeller of a cooling fan according to a first embodiment of the invention.
- FIG. 5 is a cross-sectional view of the impeller of the first embodiment of the invention.
- FIG. 6 is a top view of the impeller of the first embodiment of the invention.
- FIG. 7 is a detailed and cross-sectional view of a combination example of a metal base and a shaft of the said impeller.
- FIG. 8 is a detailed and cross-sectional view of another combination example of the metal base and the shaft of the said impeller.
- FIG. 9 is a top view of an impeller of a cooling fan according to a second embodiment of the invention.
- FIG. 10 is a cross-sectional view of an impeller of a cooling fan according to a third embodiment of the invention.
- FIG. 11 is a cross-sectional view of an impeller of a cooling fan according to a fourth embodiment of the invention.
- FIG. 12 is a cross-sectional view of the impeller of the fourth embodiment of the invention with through holes disposed in a radial extension of a stair section.
- FIG. 13 is a cross-sectional view of the impeller of the fourth embodiment of the invention with through holes disposed in both of axial and radial extensions of a stair section.
- a first embodiment of an impeller of a cooling fan which includes a metal base 1 , a shaft 2 coupled with a central part of the metal base 1 , and a plurality of plastic blades 3 coupled with a periphery of the metal base 1 .
- the metal base 1 has a shaft-coupling portion 11 and a first assembling portion 12 .
- the shaft-coupling portion 11 is formed in the central part of the metal base 1 and is a means for coupling with the shaft 2 .
- the shaft-coupling portion 11 is a hole for partially receiving the shaft 2 .
- the first assembling portion 12 is apart from the shaft-coupling portion 11 and is a means for the plurality of plastic blades 3 to couple with the metal base 1 , wherein the first assembling portion 12 can be selected from various structures for the injection-formed plastic blades 3 to mount on, which is discussed in detail later.
- the metal base 1 further includes a flat portion 13 having no axial curve and between the shaft-coupling portion 11 and the first assembling portion 12 , with the flat portion 13 preferably linking the shaft-coupling portion 11 and the first assembling portion 12 .
- the flat portion 13 oppositely includes a first flat surface 131 and a second flat surface 132 , with a permanent magnet 14 mounted on the first flat surface 131 .
- the first and second flat surfaces 131 , 132 may be uncovered or covered with a plastic or rustproof layer.
- the metal base 1 is preferably made of magnetic-conducting material, so that the metal base 1 can also effectively provide flux-guiding and shielding functions when the permanent magnet 14 is set.
- the metal base 1 is characterized in the flatness of the flat portion 13 , wherein the first and second flat surfaces 131 , 132 do not have any element similar to a hub, so that the axial size of the metal base 1 is small and thus this metal base 1 is favorable for application in miniaturized electrical devices.
- the shaft 2 has a fixing end 21 coupled with the shaft-coupling portion 11 .
- the way to connect the fixing end 21 of the shaft 2 with the shaft-coupling portion 11 of the metal base 1 can be selected from injection molding, fastening, screwing, welding, close fitting, adhesion or the like.
- FIG. 5 shows that the fixing end 21 couples with the shaft-coupling portion 11 by welding, close fitting or adhesion
- FIG. 7 shows that the fixing end 21 couples with the shaft-coupling portion 11 by a fastening ring
- FIG. 8 shows that the fixing end 21 couples with the shaft-coupling portion 11 by an injection-molded member.
- an axial end face 211 of the fixing end 21 is at the same level of or is lower than the second flat surface 132 , so that an axial size of the impeller may not increase by the shaft 2 .
- the impeller for a cooling fan is suitable to be applied in a miniaturized electrical device.
- Each of the plastic blades 3 has a second assembling portion 31 and an air-driving portion 32 .
- the second assembling portion 31 couples with the first assembling portion 12 of the metal base 1 , wherein the second assembling portion 31 is a means for coupling with the first assembling portion 12 by injection molding.
- the second assembling portions 31 of the plural plastic blades 3 can be separately formed and jointly surround the metal base 1 as shown in FIGS. 5 and 6 .
- the said second assembling portions 31 also can be integrally connected in a ring shape circularly enclosing the metal base 1 as shown in FIGS. 9 through 13 , so as to ensure that the inclinations of all the plastic blades 3 relative to the central part of the metal base 1 are the same.
- the ring jointly formed by the said second assembling portions 31 there are more choices in shape and inclination for the plastic blades 3 to be arranged so as to provide larger air current and better rotational balance.
- first assembling portion 12 of the metal base 1 and the second assembling portion 31 of the plastic blades 3 can be divided into several types discussed as following:
- the first assembling portion 12 of the metal base 1 has a plurality of through holes 121 arranged in a circular route adjacent to the periphery of the metal base 1 , wherein any adjacent two of the through holes 121 are spaced out a predetermined distance apart.
- the second assembling portions 31 of the plastic blades 3 fill up the through holes 121 of the first assembling portion 12 by injection-molding, wherein the second assembling portion 31 of each plastic blade 3 is in the form of a wrapping part 311 coupling with inner walls defining the through holes 121 .
- the ring serves as the second assembling portions 31 and couples with all the through holes 121 by injection molding.
- the plurality of plastic blades 3 can fixedly couple with the metal base 1 and get rid of radial loose and disengagement from the metal base 1 .
- the first assembling portion 12 of the metal base 1 provides a plurality of saw teeth 122 at the periphery of the metal base 1 , and ends of the plurality of plastic blades 3 , which couple with the periphery of the metal base 1 , jointly form an enclosing ring 312 serving as the second assembling portions 31 .
- the plurality of plastic blades 3 can steadily couple with the metal base 1 and get rid of radial loose and disengagement from the metal base 1 .
- the combination between the metal base 1 and the plastic blades 3 can be apparently improved.
- the first assembling portion 12 of the metal base 1 has an inclined section 123 forming the periphery of the metal base 1 .
- the inclined section 123 is inclined relative to the first and second flat surface 131 , 132 of the flat portion 13 , such as bent toward the first flat surface 131 or toward the second flat surface 132 .
- ends of the plurality of plastic blades 3 which couple with the periphery of the metal base 1 , jointly form an enclosing ring 313 serving as the second assembling portions 31 .
- the injection-molded enclosing ring 313 couples with the inclined section 123 of the first assembling portion 12 by covering both of first and second surfaces of the inclined section 123 , wherein the said first surface connects with and extends from the first flat surface 131 , and the said second surface connects with and extends from the second flat surface 132 . Furthermore, there can be a through hole in the inclined section 123 extending from the first surface to the second surface, so that the enclosing ring 313 can fill the through hole to achieve an enhanced assembling performance between the plastic blades 3 and the metal base 1 .
- the plurality of plastic blades 3 can also fixedly couple with the metal base 1 and get rid of radial loose and disengagement from the metal base 1 .
- the coupling area between the plastic blades 3 and the metal base 1 is enlarged while the axial size of the metal base 1 is maintained. As a result, the coupling strength between the plastic blades 3 and the metal base 1 is enhanced in this embodiment.
- the first assembling portion 12 of the metal base 1 has a stair section 124 forming the periphery of the metal base 1 , wherein the stair section 124 includes a radial extension and an axial extension linking the flat portion 13 and the radial extension.
- ends of the plurality of plastic blades 3 which couple with the periphery of the metal base 1 and serve as the second assembling portions 31 , jointly form an enclosing ring 314 .
- the injection-molded enclosing ring 314 couples with the stair section 124 of the first assembling portion 12 by covering both of first and second surfaces of the stair section 124 , wherein the said first surface connects with and extends from the first flat surface 131 , and the said second surface connects with and extends from the second flat surface 132 . Furthermore, there can be through holes 125 in at least one of the axial and radial extensions of the stair section 124 extending from the first surface to the second surface, so that the enclosing ring 314 can fill the through holes 125 to achieve an enhanced assembling performance between the plastic blades 3 and the metal base 1 . Specifically, referring to FIG.
- one of the through holes 125 is disposed in the axial extension of the stair section 124 ; and, referring to FIG. 13 , two of the through holes 125 are respectively disposed in the axial and radial extensions of the stair section 124 .
- the plurality of plastic blades 3 can also fixedly couple with the metal base 1 and get rid of radial loose and disengagement from the metal base 1 .
- the coupling area between the plastic blades 3 and the metal base 1 is enlarged while the axial size of the metal base 1 is maintained.
- the coupling strength between the plastic blades 3 and the metal base 1 is strongly enhanced by increasing the coupling area of the plastic blades 3 and the metal base 1 .
- the coupling area between the plastic blades 3 and the metal base 1 is also relatively enlarged.
- the coupling strength between the plastic blades 3 and the metal base 1 is further enhanced in this embodiment.
- the above-disclosed embodiments can be divided into two types.
- the first type includes the first and second embodiments shown in FIGS. 5 , 6 and 9 , wherein the flat portion 13 and the first assembling portion 12 are coplanar. Specifically, in an axial direction of the shaft-coupling portion 11 of the metal base 1 , the flat portion 13 has a first axial thickness “H 1 ,” the first assembling portion 12 has a second axial thickness “H 2 ,” and a ratio of the second axial thickness “H 2 ” to the first axial thickness “H 1 ” is 1.
- the second type includes the third and fourth embodiments shown in FIGS.
- the flat portion 13 and the first assembling portion 12 are non-coplanar, and the coupling strength between the plastic blades 3 and the metal base 1 is improved.
- a ratio of the second axial thickness “H 2 ” to the first axial thickness “H 1 ” falls in a range between 1.1 and 8.5, and it is preferably between 1.1 and 4. Therefore, the coupling strength between the plastic blades 3 and the metal base 1 is further enhanced in this embodiment.
- the proposed impeller When the proposed impeller is in use, it can be served as an impeller in an axial fan, a blower, or an advection fan.
- the proposed impeller Taking a blower as an example, the proposed impeller is rotatably mounted in a fan frame and driven by a motor via conventional ways. Therefore, the proposed impeller is suitable for use in kinds of miniaturized electrical devices to achieve cooling purpose in operation.
- the main characteristic of the metal base 1 of the disclosed impeller is that the metal base 1 includes a shaft-coupling portion 11 , a first assembling portion 12 apart from the shaft-coupling portion 1 , and a flat portion 13 between the shaft-coupling portion 11 and the first assembling portion 12 , wherein the flat portion 13 oppositely has a first flat surface 131 and a second flat surface 132 .
- the impeller has a compact size in axial direction and is suitable for application in miniaturized electrical devices.
- the disclosed impeller mainly includes the metal base 1 and the plastic blades 3 , wherein the metal base 1 is formed by a metal plate with low thickness and high structural strength while the plastic blades 3 provide desirable elasticity and low manufacturing cost.
- base on the disclosed impeller mainly includes the metal base 1 and the plastic blades 3 , the impeller is thin as well strong.
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Abstract
An impeller of a cooling fan includes a metal base, a shaft and a plurality of plastic blades. The metal base includes a shaft-coupling portion, a first assembling portion apart from the shaft-coupling portion, and a flat portion between the shaft-coupling portion and the first assembling portion, wherein the flat portion oppositely has a first flat surface and a second flat surface, and a permanent magnet is mounted on the first flat surface. The shaft has a fixing end coupled with the shaft-coupling portion of the metal base. Each of the plastic blades has a second assembling portion coupled with the first assembling portion of the metal base.
Description
- 1. Field of the Invention
- The present invention generally relates to an impeller of cooling fan and, more particularly, to an impeller suitable for thin cooling fan.
- 2. Description of the Related Art
- In the current trend of miniaturization for electrical devices, cooling fans disposed inside miniaturized electrical devices to drive air currents for cooling have to be smaller than conventional fans. In this condition, the size of an impeller in a cooling fan becomes a critical feature of whether the cooling fan is suitable to be applied in a miniaturized electrical device.
- Referring to
FIGS. 1 and 2 , an invention of Taiwan Patent No. 1293106, entitled as “Thin-Type Fan,” is shown. The invention is about aconventional cooling fan 8 including abase 81, animpeller 82, amagnetic plate 83 and ashaft 84. Thebase 81 has acentral hole 811 and acoil unit 812. Theimpeller 82 has a plurality ofbent blades 821. Themagnetic plate 83 is mounted on the bottom of theimpeller 82. Theshaft 84 rotatably inserts into thecentral hole 811 of thebase 81 with one end and fixedly couples with theimpeller 82 with the other end. With the above arrangement, theimpeller 82 of thisconventional cooling fan 8 is thin and suitable to be applied in kinds of miniaturized electrical devices. - However, the
impeller 82 ofcooling fan 8 is conventionally made by punching a metal plate into the shape of an impeller with the outer periphery of the metal plate being bent to form theblades 821. Although theimpeller 82 made of the metal plate is thin, the manufacturing process of theimpeller 82 is complex and a large amount of metal is needed, such that manufacturing cost of thisimpeller 82 is large. Besides, the choices in shape and inclination of theblades 821 are few since theblades 821 are formed by punching, so that it is impossible to greatly enhance the air-driving performance by modifying the shape or inclination of theblades 821. Furthermore, themetal impeller 82 is much heavier than others made of plastic, and this may result in high loading in weight and further affect rotational performance. Finally, it is difficult to bend theblades 821 formed by punching into identical shapes, and thus air-driving and rotational balance performances are lowered too. - Another example, referring to
FIG. 3 , is shown by the contents of Taiwan Patent No. M350746, entitled as “Thin-Type Fan Rotor.” This patent discloses a thin impeller that is a common impeller design currently available in the market. It discloses that arotor 9 has ametal housing 91, ashaft 92 coupled to a center of themetal housing 91, ametal blade frame 93 extending outwards from the periphery of themetal housing 91 in a radial direction of therotor 9, and aplastic blade portion 94 fixed with themetal blade frame 93. Specifically, since therotor 9 is mainly constructed by themetal housing 91 and themetal blade frame 93, a desirable structural strength of therotor 9 is provided. Moreover, due to theplastic blade portion 94 for air driving, which is easy to be uniformly formed by injection molding, therotor 9 has advantages such as easy fabrication, low manufacturing cost and desirable air-driving performance. Accordingly, therotor 9 is thin as well as strong. - However, it is not flat from a center part of the
metal housing 91 by which the metal housing 91 couples with theshaft 92 to the outer periphery of themetal blade frame 93 where theplastic blade portion 94 couples with. Specifically, the periphery of themetal housing 91 has ahub portion 95 axially bulging relative to themetal blade frame 93, which results in a large axial thickness of therotor 9. Therefore, due to themetal housing 91 having an increased thickness, therotor 9 inside an electrical device may become a stumbling block of axial miniaturization of the electrical device. As a result, it is necessary to improve the conventional rotors. - It is therefore the objective of this invention to provide an impeller having a metal base with compact axial size, so as to render a cooling fan with the impeller suitable for use in miniaturized electrical devices.
- It is another objective of this invention to provide an impeller constructed by the metal base and a plurality of plastic blades coupling with the metal base, so that the impeller is thin but strong.
- One embodiment of the invention discloses an impeller of a cooling fan, which includes a metal base, a shaft and a plurality of plastic blades. The metal base includes a shaft-coupling portion, a first assembling portion apart from the shaft-coupling portion, and a flat portion between the shaft-coupling portion and the first assembling portion, wherein the flat portion oppositely has a first flat surface and a second flat surface, and a permanent magnet is mounted on the first flat surface. The shaft has a fixing end coupled with the shaft-coupling portion of the metal base. Each of the plastic blades has a second assembling portion coupled with the first assembling portion of the metal base.
- In a preferred form shown, the second assembling portions jointly form an enclosing ring coupled with the first assembling portion of the metal base.
- In the preferred form shown, the first assembling portion of the metal base has a plurality of through holes, and the second assembling portions of the plastic blades fill up the through holes.
- In the preferred form shown, the through holes are arranged in a circular route adjacent to a periphery of the metal base, and any adjacent two of the through holes are spaced out a predetermined distance apart.
- In the preferred form shown, the first assembling portion of the metal base has a plurality of saw teeth at a periphery of the metal base, and the second assembling portions of the plastic blades couple with the saw teeth at the periphery of the metal base.
- In the preferred form shown, the first assembling portion of the metal base has an inclined section forming the periphery of the metal base, and the second assembling portions of the plastic blades couple with the inclined section of the first assembling portion of the metal base.
- In the preferred form shown, the second assembling portions couple with the inclined section of the first assembling portion by covering both of first and second surfaces of the inclined section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
- In the preferred form shown, a through hole is disposed in the inclined section and extends from a first surface of the inclined section to a second surface of the inclined section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
- In the preferred form shown, the first assembling portion of the metal base has a stair section, and the second assembling portions of the plastic blades couple with the stair section of the first assembling portion of the metal base.
- In the preferred form shown, the second assembling portions couple with the stair section of the first assembling portion by covering both of first and second surfaces of the stair section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
- In the preferred form shown, the stair section includes a radial extension and an axial extension linking the flat portion and the radial extension.
- In the preferred form shown, through holes are disposed in at least one of the axial and radial extensions of the stair section and extend from a first surface of the stair section to a second surface of the stair section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
- In the preferred form shown, the flat portion and the first assembling portion are coplanar.
- In the preferred form shown, the flat portion and the first assembling portion are non-coplanar.
- In the preferred form shown, in an axial direction of the shaft-coupling portion of the metal base, the flat portion has a first axial thickness, the first assembling portion has a second axial thickness, and a ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 8.5, and the ratio of the second axial thickness to the first axial thickness preferably falls in a range between 1.1 and 4.
- In the preferred form shown, the first and second flat surfaces are uncovered or covered with a plastic or rustproof layer.
- In the preferred form shown, an axial end face of the fixing end is at a same level of or is lower than the second flat surface.
- The present invention will become more fully understood from the detailed description given hereinafter and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
-
FIG. 1 is a perspective and exploded view of a conventional thin-type fan. -
FIG. 2 is a cross-sectional view of the conventional thin-type fan. -
FIG. 3 is a cross-sectional view of a conventional thin-type fan rotor. -
FIG. 4 is a perspective view of an impeller of a cooling fan according to a first embodiment of the invention. -
FIG. 5 is a cross-sectional view of the impeller of the first embodiment of the invention. -
FIG. 6 is a top view of the impeller of the first embodiment of the invention. -
FIG. 7 is a detailed and cross-sectional view of a combination example of a metal base and a shaft of the said impeller. -
FIG. 8 is a detailed and cross-sectional view of another combination example of the metal base and the shaft of the said impeller. -
FIG. 9 is a top view of an impeller of a cooling fan according to a second embodiment of the invention. -
FIG. 10 is a cross-sectional view of an impeller of a cooling fan according to a third embodiment of the invention. -
FIG. 11 is a cross-sectional view of an impeller of a cooling fan according to a fourth embodiment of the invention. -
FIG. 12 is a cross-sectional view of the impeller of the fourth embodiment of the invention with through holes disposed in a radial extension of a stair section. -
FIG. 13 is a cross-sectional view of the impeller of the fourth embodiment of the invention with through holes disposed in both of axial and radial extensions of a stair section. - In the various figures of the drawings, the same numerals designate the same or similar parts. Furthermore, when the term “first,” “second,” “third,” “fourth,” “top,” “lower,” and similar terms are used hereinafter, it should be understood that these terms refer only to the structure shown in the drawings as it would appear to a person viewing the drawings, and are utilized only to facilitate describing the invention.
- Referring to
FIGS. 4 , 5 and 6, a first embodiment of an impeller of a cooling fan is shown, which includes ametal base 1, ashaft 2 coupled with a central part of themetal base 1, and a plurality ofplastic blades 3 coupled with a periphery of themetal base 1. - The
metal base 1 has a shaft-coupling portion 11 and a first assembling portion 12. The shaft-coupling portion 11 is formed in the central part of themetal base 1 and is a means for coupling with theshaft 2. In this embodiment, the shaft-coupling portion 11 is a hole for partially receiving theshaft 2. The first assembling portion 12 is apart from the shaft-coupling portion 11 and is a means for the plurality ofplastic blades 3 to couple with themetal base 1, wherein the first assembling portion 12 can be selected from various structures for the injection-formedplastic blades 3 to mount on, which is discussed in detail later. Themetal base 1 further includes aflat portion 13 having no axial curve and between the shaft-coupling portion 11 and the first assembling portion 12, with theflat portion 13 preferably linking the shaft-coupling portion 11 and the first assembling portion 12. Specifically, theflat portion 13 oppositely includes a firstflat surface 131 and a secondflat surface 132, with apermanent magnet 14 mounted on the firstflat surface 131. The first and secondflat surfaces metal base 1 is preferably made of magnetic-conducting material, so that themetal base 1 can also effectively provide flux-guiding and shielding functions when thepermanent magnet 14 is set. Themetal base 1 is characterized in the flatness of theflat portion 13, wherein the first and secondflat surfaces metal base 1 is small and thus thismetal base 1 is favorable for application in miniaturized electrical devices. - The
shaft 2 has a fixingend 21 coupled with the shaft-coupling portion 11. The way to connect the fixingend 21 of theshaft 2 with the shaft-coupling portion 11 of themetal base 1 can be selected from injection molding, fastening, screwing, welding, close fitting, adhesion or the like. Specifically,FIG. 5 shows that the fixingend 21 couples with the shaft-coupling portion 11 by welding, close fitting or adhesion;FIG. 7 shows that the fixingend 21 couples with the shaft-coupling portion 11 by a fastening ring; andFIG. 8 shows that the fixingend 21 couples with the shaft-coupling portion 11 by an injection-molded member. Preferably, anaxial end face 211 of the fixingend 21 is at the same level of or is lower than the secondflat surface 132, so that an axial size of the impeller may not increase by theshaft 2. As a result, the impeller for a cooling fan is suitable to be applied in a miniaturized electrical device. - Each of the
plastic blades 3 has a second assembling portion 31 and an air-drivingportion 32. The second assembling portion 31 couples with the first assembling portion 12 of themetal base 1, wherein the second assembling portion 31 is a means for coupling with the first assembling portion 12 by injection molding. Specifically, the second assembling portions 31 of theplural plastic blades 3 can be separately formed and jointly surround themetal base 1 as shown inFIGS. 5 and 6 . However, the said second assembling portions 31 also can be integrally connected in a ring shape circularly enclosing themetal base 1 as shown inFIGS. 9 through 13 , so as to ensure that the inclinations of all theplastic blades 3 relative to the central part of themetal base 1 are the same. Besides, with the ring jointly formed by the said second assembling portions 31, there are more choices in shape and inclination for theplastic blades 3 to be arranged so as to provide larger air current and better rotational balance. - The embodiments of the first assembling portion 12 of the
metal base 1 and the second assembling portion 31 of theplastic blades 3 can be divided into several types discussed as following: - Particularly, in this first embodiment, referring to
FIGS. 5 and 6 again, the first assembling portion 12 of themetal base 1 has a plurality of throughholes 121 arranged in a circular route adjacent to the periphery of themetal base 1, wherein any adjacent two of the throughholes 121 are spaced out a predetermined distance apart. The second assembling portions 31 of theplastic blades 3 fill up the throughholes 121 of the first assembling portion 12 by injection-molding, wherein the second assembling portion 31 of eachplastic blade 3 is in the form of awrapping part 311 coupling with inner walls defining the throughholes 121. On the other hand, if the second assembling portions 31 are integrally connected to form the ring shape enclosing themetal base 1 circularly, the ring serves as the second assembling portions 31 and couples with all the throughholes 121 by injection molding. As a result, the plurality ofplastic blades 3 can fixedly couple with themetal base 1 and get rid of radial loose and disengagement from themetal base 1. - Referring to
FIG. 9 , a second embodiment of the impeller of a cooling fan is disclosed. In comparison with the first embodiment, the first assembling portion 12 of themetal base 1 provides a plurality ofsaw teeth 122 at the periphery of themetal base 1, and ends of the plurality ofplastic blades 3, which couple with the periphery of themetal base 1, jointly form anenclosing ring 312 serving as the second assembling portions 31. As a result, the plurality ofplastic blades 3 can steadily couple with themetal base 1 and get rid of radial loose and disengagement from themetal base 1. Furthermore, compared withFIGS. 5 and 6 , with thesaw teeth 122 and theenclosing ring 312, the combination between themetal base 1 and theplastic blades 3 can be apparently improved. - Referring to
FIG. 10 , a third embodiment of the impeller of a cooling fan is disclosed. In comparison with the first and second embodiments, the first assembling portion 12 of themetal base 1 has aninclined section 123 forming the periphery of themetal base 1. Theinclined section 123 is inclined relative to the first and secondflat surface flat portion 13, such as bent toward the firstflat surface 131 or toward the secondflat surface 132. Additionally, ends of the plurality ofplastic blades 3, which couple with the periphery of themetal base 1, jointly form anenclosing ring 313 serving as the second assembling portions 31. The injection-moldedenclosing ring 313 couples with theinclined section 123 of the first assembling portion 12 by covering both of first and second surfaces of theinclined section 123, wherein the said first surface connects with and extends from the firstflat surface 131, and the said second surface connects with and extends from the secondflat surface 132. Furthermore, there can be a through hole in theinclined section 123 extending from the first surface to the second surface, so that the enclosingring 313 can fill the through hole to achieve an enhanced assembling performance between theplastic blades 3 and themetal base 1. Accordingly, with the arrangement in this embodiment, the plurality ofplastic blades 3 can also fixedly couple with themetal base 1 and get rid of radial loose and disengagement from themetal base 1. Additionally, in comparison with the first and second embodiments shown byFIGS. 5 , 6 and 9, since theinclined section 123 is totally enclosed inside the enclosingring 313, the coupling area between theplastic blades 3 and themetal base 1 is enlarged while the axial size of themetal base 1 is maintained. As a result, the coupling strength between theplastic blades 3 and themetal base 1 is enhanced in this embodiment. - Referring to
FIG. 11 , a fourth embodiment of the impeller of a cooling fan is disclosed. In comparison with the first, second and third embodiments, the first assembling portion 12 of themetal base 1 has astair section 124 forming the periphery of themetal base 1, wherein thestair section 124 includes a radial extension and an axial extension linking theflat portion 13 and the radial extension. Similarly, ends of the plurality ofplastic blades 3, which couple with the periphery of themetal base 1 and serve as the second assembling portions 31, jointly form anenclosing ring 314. The injection-moldedenclosing ring 314 couples with thestair section 124 of the first assembling portion 12 by covering both of first and second surfaces of thestair section 124, wherein the said first surface connects with and extends from the firstflat surface 131, and the said second surface connects with and extends from the secondflat surface 132. Furthermore, there can be throughholes 125 in at least one of the axial and radial extensions of thestair section 124 extending from the first surface to the second surface, so that the enclosingring 314 can fill the throughholes 125 to achieve an enhanced assembling performance between theplastic blades 3 and themetal base 1. Specifically, referring toFIG. 12 , one of the throughholes 125 is disposed in the axial extension of thestair section 124; and, referring toFIG. 13 , two of the throughholes 125 are respectively disposed in the axial and radial extensions of thestair section 124. Accordingly, with the arrangement in this embodiment, the plurality ofplastic blades 3 can also fixedly couple with themetal base 1 and get rid of radial loose and disengagement from themetal base 1. Additionally, in comparison with the first and second embodiments shown byFIGS. 5 , 6 and 9, since thestair section 124 is totally enclosed inside the enclosingring 314, the coupling area between theplastic blades 3 and themetal base 1 is enlarged while the axial size of themetal base 1 is maintained. The coupling strength between theplastic blades 3 and themetal base 1 is strongly enhanced by increasing the coupling area of theplastic blades 3 and themetal base 1. Besides, in comparison with the third embodiment shown byFIG. 10 , the coupling area between theplastic blades 3 and themetal base 1 is also relatively enlarged. As a result, the coupling strength between theplastic blades 3 and themetal base 1 is further enhanced in this embodiment. - The above-disclosed embodiments can be divided into two types. The first type includes the first and second embodiments shown in
FIGS. 5 , 6 and 9, wherein theflat portion 13 and the first assembling portion 12 are coplanar. Specifically, in an axial direction of the shaft-coupling portion 11 of themetal base 1, theflat portion 13 has a first axial thickness “H1,” the first assembling portion 12 has a second axial thickness “H2,” and a ratio of the second axial thickness “H2” to the first axial thickness “H1” is 1. The second type includes the third and fourth embodiments shown inFIGS. 10 and 11 , wherein theflat portion 13 and the first assembling portion 12 are non-coplanar, and the coupling strength between theplastic blades 3 and themetal base 1 is improved. Particularly, based on that the first assembling portion 12 axially extends within an axial extending range of theplastic blades 3, a ratio of the second axial thickness “H2” to the first axial thickness “H1” falls in a range between 1.1 and 8.5, and it is preferably between 1.1 and 4. Therefore, the coupling strength between theplastic blades 3 and themetal base 1 is further enhanced in this embodiment. - When the proposed impeller is in use, it can be served as an impeller in an axial fan, a blower, or an advection fan. Taking a blower as an example, the proposed impeller is rotatably mounted in a fan frame and driven by a motor via conventional ways. Therefore, the proposed impeller is suitable for use in kinds of miniaturized electrical devices to achieve cooling purpose in operation.
- In sum, the main characteristic of the
metal base 1 of the disclosed impeller is that themetal base 1 includes a shaft-coupling portion 11, a first assembling portion 12 apart from the shaft-coupling portion 1, and aflat portion 13 between the shaft-coupling portion 11 and the first assembling portion 12, wherein theflat portion 13 oppositely has a firstflat surface 131 and a secondflat surface 132. There is no hub portion axially bulging relative to the firstflat surface 131 and the secondflat surface 132. As a result, the impeller has a compact size in axial direction and is suitable for application in miniaturized electrical devices. - Furthermore, the disclosed impeller mainly includes the
metal base 1 and theplastic blades 3, wherein themetal base 1 is formed by a metal plate with low thickness and high structural strength while theplastic blades 3 provide desirable elasticity and low manufacturing cost. Besides, base on the disclosed impeller mainly includes themetal base 1 and theplastic blades 3, the impeller is thin as well strong. - Although the invention has been described in detail with reference to its presently preferable embodiments, it will be understood by one of ordinary skill in the art that various modifications can be made without departing from the spirit and the scope of the invention, as set forth in the appended claims.
Claims (22)
1. An impeller of a cooling fan, comprising:
a metal base comprising a shaft-coupling portion, a first assembling portion apart from the shaft-coupling portion, and a flat portion between the shaft-coupling portion and the first assembling portion, wherein the flat portion oppositely has a first flat surface and a second flat surface, and a permanent magnet is mounted on the first flat surface;
a shaft having a fixing end coupled with the shaft-coupling portion of the metal base; and
a plurality of plastic blades, wherein each plastic blade has a second assembling portion coupled with the first assembling portion of the metal base.
2. The impeller of the cooling fan as claimed in claim 1 , wherein the second assembling portions jointly form an enclosing ring coupled with the first assembling portion of the metal base.
3. The impeller of the cooling fan as claimed in claim 1 , wherein the first assembling portion of the metal base has a plurality of through holes, and the second assembling portions of the plastic blades fill up the through holes.
4. The impeller of the cooling fan as claimed in claim 3 , wherein the through holes are arranged in a circular route adjacent to a periphery of the metal base, and any adjacent two of the through holes are spaced out a predetermined distance apart.
5. The impeller of the cooling fan as claimed in claim 1 , wherein the first assembling portion of the metal base has a plurality of saw teeth at a periphery of the metal base, and the second assembling portions of the plastic blades couple with the saw teeth at the periphery of the metal base.
6. The impeller of the cooling fan as claimed in claim 1 , wherein the first assembling portion of the metal base has an inclined section forming the periphery of the metal base, and the second assembling portions of the plastic blades couple with the inclined section of the first assembling portion of the metal base.
7. The impeller of the cooling fan as claimed in claim 6 , wherein the second assembling portions couple with the inclined section of the first assembling portion by covering both of first and second surfaces of the inclined section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
8. The impeller of the cooling fan as claimed in claim 6 , wherein a through hole is disposed in the inclined section and extends from a first surface of the inclined section to a second surface of the inclined section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
9. The impeller of the cooling fan as claimed in claim 1 , wherein the first assembling portion of the metal base has a stair section, and the second assembling portions of the plastic blades couple with the stair section of the first assembling portion of the metal base.
10. The impeller of the cooling fan as claimed in claim 9 , wherein the second assembling portions couple with the stair section of the first assembling portion by covering both of first and second surfaces of the stair section, wherein the first surface connects with and extends from the first flat surface of the flat portion, and the second surface connects with and extends from the second flat surface of the flat portion.
11. The impeller of the cooling fan as claimed in claim 9 , wherein the stair section includes a radial extension extending in a radial direction of the metal base and an axial extension extending in an axial direction of the metal base, with the axial extension linking the flat portion and the radial extension.
12. The impeller of the cooling fan as claimed in claim 9 , wherein through holes are disposed in at least one of the axial and radial extensions of the stair section and extend from a first surface of the stair section to a second surface of the stair section, and the second assembling portions fill the through hole, with the first surface connecting with and extending from the first flat surface of the flat portion, and with the second surface connecting with and extending from the second flat surface of the flat portion.
13. The impeller of the cooling fan as claimed in claim 1 , wherein the flat portion and the first assembling portion are coplanar.
14. The impeller of the cooling fan as claimed in claim 1 , wherein the flat portion and the first assembling portion are non-coplanar.
15. The impeller of the cooling fan as claimed in claim 14 , wherein, in an axial direction of the shaft-coupling portion of the metal base, the flat portion has a first axial thickness, the first assembling portion has a second axial thickness, and a ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 8.5.
16. The impeller of the cooling fan as claimed in claim 15 , wherein the ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 4.
17. The impeller of the cooling fan as claimed in claim 9 , wherein the flat portion and the first assembling portion are non-coplanar.
18. The impeller of the cooling fan as claimed in claim 17 , wherein, in an axial direction of the shaft-coupling portion of the metal base, the flat portion has a first axial thickness, the first assembling portion has a second axial thickness, and a ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 8.5.
19. The impeller of the cooling fan as claimed in claim 18 , wherein the ratio of the second axial thickness to the first axial thickness falls in a range between 1.1 and 4.
20. The impeller of the cooling fan as claimed in claim 1 , wherein the first and second flat surfaces are uncovered.
21. The impeller of the cooling fan as claimed in claim 1 , wherein the first and second flat surfaces are covered with a plastic or rustproof layer.
22. The impeller of the cooling fan as claimed in claim 1 , wherein an axial end face of the fixing end is at a same level of or is lower than the second flat surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW101122258 | 2012-06-21 | ||
TW101122258A TWI516682B (en) | 2012-06-21 | 2012-06-21 | Impeller |
Publications (1)
Publication Number | Publication Date |
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US20130343884A1 true US20130343884A1 (en) | 2013-12-26 |
Family
ID=49774615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/746,422 Abandoned US20130343884A1 (en) | 2012-06-21 | 2013-01-22 | Impeller of Cooling Fan |
Country Status (2)
Country | Link |
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US (1) | US20130343884A1 (en) |
TW (1) | TWI516682B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106979173A (en) * | 2017-03-17 | 2017-07-25 | 联想(北京)有限公司 | A kind of blade structure and equipment |
USD860956S1 (en) * | 2017-03-31 | 2019-09-24 | Delta Electronics, Inc. | Impeller |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI747203B (en) * | 2020-03-19 | 2021-11-21 | 肯尼實業有限公司 | Fan wheel structure of exercise bicycle |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5655882A (en) * | 1996-05-02 | 1997-08-12 | Engineered Cooling Systems, Inc. | Fan assembly and method |
US6358009B1 (en) * | 1999-12-30 | 2002-03-19 | American Cooling Systems, Llc | Fan blade assembly and method of balancing the same |
US20030063976A1 (en) * | 2001-09-28 | 2003-04-03 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller structure |
US7207779B2 (en) * | 2004-08-18 | 2007-04-24 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller for radial-flow heat dissipating fan |
TWM350746U (en) * | 2008-10-13 | 2009-02-11 | Forcecon Technology Co Ltd | Thin-type fan rotor |
US7626295B2 (en) * | 2005-11-01 | 2009-12-01 | Tokyo Parts Industrial Co., Ltd | Flat eccentric rotor equipped with a fan and flat vibration motor equipped with a fan comprising same rotor |
US8974194B2 (en) * | 2011-12-09 | 2015-03-10 | Sunonwealth Electric Machine Industry Co., Ltd. | Advection-type fan and an impeller thereof |
-
2012
- 2012-06-21 TW TW101122258A patent/TWI516682B/en active
-
2013
- 2013-01-22 US US13/746,422 patent/US20130343884A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5655882A (en) * | 1996-05-02 | 1997-08-12 | Engineered Cooling Systems, Inc. | Fan assembly and method |
US6358009B1 (en) * | 1999-12-30 | 2002-03-19 | American Cooling Systems, Llc | Fan blade assembly and method of balancing the same |
US20030063976A1 (en) * | 2001-09-28 | 2003-04-03 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller structure |
US7207779B2 (en) * | 2004-08-18 | 2007-04-24 | Sunonwealth Electric Machine Industry Co., Ltd. | Impeller for radial-flow heat dissipating fan |
US7626295B2 (en) * | 2005-11-01 | 2009-12-01 | Tokyo Parts Industrial Co., Ltd | Flat eccentric rotor equipped with a fan and flat vibration motor equipped with a fan comprising same rotor |
TWM350746U (en) * | 2008-10-13 | 2009-02-11 | Forcecon Technology Co Ltd | Thin-type fan rotor |
US8974194B2 (en) * | 2011-12-09 | 2015-03-10 | Sunonwealth Electric Machine Industry Co., Ltd. | Advection-type fan and an impeller thereof |
Non-Patent Citations (1)
Title |
---|
English translation of TWM350746U dated 2009-02-11 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106979173A (en) * | 2017-03-17 | 2017-07-25 | 联想(北京)有限公司 | A kind of blade structure and equipment |
USD860956S1 (en) * | 2017-03-31 | 2019-09-24 | Delta Electronics, Inc. | Impeller |
Also Published As
Publication number | Publication date |
---|---|
TWI516682B (en) | 2016-01-11 |
TW201400713A (en) | 2014-01-01 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD., T Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HORNG, ALEX;REEL/FRAME:029667/0267 Effective date: 20121001 |
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STCB | Information on status: application discontinuation |
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