WO2017131506A1 - Ventilateur de plafond - Google Patents

Ventilateur de plafond Download PDF

Info

Publication number
WO2017131506A1
WO2017131506A1 PCT/MY2016/050028 MY2016050028W WO2017131506A1 WO 2017131506 A1 WO2017131506 A1 WO 2017131506A1 MY 2016050028 W MY2016050028 W MY 2016050028W WO 2017131506 A1 WO2017131506 A1 WO 2017131506A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
rotor
mounting member
fan blade
blade
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.)
Ceased
Application number
PCT/MY2016/050028
Other languages
English (en)
Inventor
Kee Cheng NG
Boon Hooi TEO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Manufacturing Malaysia Bhd
Original Assignee
Panasonic Manufacturing Malaysia Bhd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Manufacturing Malaysia Bhd filed Critical Panasonic Manufacturing Malaysia Bhd
Publication of WO2017131506A1 publication Critical patent/WO2017131506A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/088—Ceiling fans
    • 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
    • F04D29/329—Details of the hub
    • 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
    • F04D29/34—Blade mountings

Definitions

  • the invention relates generally to ceiling fan, and more particularly, to ceiling fans having safety means to prevent its fan blade to fall when a breakage occurs on root portion of the fan blade.
  • ceiling fans are still well known as an efficient means for circulating air within home or buildings.
  • conventional ceiling fans comprise a number of fan blades rotate in relation to a motorized hub.
  • the fan blade may fall if it is installed improperly or in some cases, broken fan blades and fall as a flying projectile.
  • Even installation of the fan blades to the ceiling fan is ensure competently installed by manufacturers, there is always a risk of a failure resulting the fan blade falling from the ceiling fan.
  • the brace does not provide any notification to user if the breakage occurs as the fan blades hold in place by the braces.
  • Another object of the present invention is to provide a ceiling fan with a safety mounting member for holding the fan blade upon the unlikely event of the fan blade breaking or the fan blade becoming loose from the ceiling fan whereby any possible danger of the fan blade to fall will be eliminated and people will not be in danger of being injured.
  • Another object of the present invention is to provide a ceiling fan with a safety mounting member for use in a ceiling fan assembly, the ceiling fan assembly having a stator with an end supported on a ceiling; a rotor rotatably mounted about periphery of the stator; a plurality of protruding member protruded upwardly from the rotor; and a plurality of fan blades with a through hole each at about its root portion to receive the protruding member respectively for being connected radially from the rotor.
  • Another object of the present invention is to provide a ceiling fan with a safety mounting member having a design which can be readily utilized in the ceiling fan with minimal modification.
  • Another object of the present invention is to provide ceiling fan with a safety mounting members which can notification to user, if a breakage occurs on the fan blade.
  • the present invention is also to provide a ceiling fan with a safety mounting member which utilizes a minimal number of components and therefore economical to manufacture.
  • a ceiling fan comprising: a stator with an end supported on a ceiling; a rotor rotatably mounted to the stator; a plurality of elongate fan blades extending radially from the rotor; and a blade mounting member associated with each of the fan blades for preventing a fan blade that has broken to become totally detached from the rotor, wherein the blade mounting member comprises a first portion captively attached to the rotor and a second portion slidably attached to the fan blade, the second portion having an elongate slot closed at one end such that the broken fan blade slides along the slot in a direction away from the rotor until it is prevented from further movement by contact with the closed end of the slot.
  • the fan blade can further comprise at least one retaining member which is positioned within the elongate slot of the blade mounting member.
  • the fan blade can be connected to the rotor by any fastening member.
  • the rotor can include a plurality of protruding member extended upwardly from the rotor for positioning the fan blade.
  • the blade mounting member can further comprise at least one free end bent around the first portion or second portion to prevent deformation of the blade mounting member.
  • the blade mounting member is made up of single wire rod.
  • fan blades can include a frame portion which is attached with the rotor.
  • the frame portion also can further comprise at least one retaining member which is positioned within the elongate slot of the blade mounting member.
  • Figure 1 shows a side view of a ceiling fan.
  • Figure 2 shows a top view of a blade mounting member.
  • Figure 3 shows a detail cross sectional view of the mounting member provided in a fan blade of the ceiling fan.
  • Figure 4 shows a detail perspective view of a frame portion of the fan blade.
  • Figure 5 shows a side view of a state in which the fan blade is held by the mounting member when the fan blade is disconnected from a rotor of the ceiling fan during the ceiling fan rotates.
  • Figure 6 shows a side view of a state in which the fan blade is held by the mounting member when the fan blade is disconnected from a rotor of the ceiling fan during the ceiling fan stops.
  • the invention relates generally to ceiling fan, and more particularly, to ceiling fans having safety means to prevent its fan blade to fall when a breakage occurs on root portion of the fan blade.
  • safety means to prevent its fan blade to fall when a breakage occurs on root portion of the fan blade.
  • the ceiling fan includes a motor which has a stationary portion or stator (2) and a rotor which is rotatably mounted to the stator.
  • the stator (2) has an end supported on a ceiling (1).
  • a plurality of elongate fan blades (3) is extending radially from the rotor so as to rotate with the rotor.
  • the fan blade (3) is preferably made up of metal or any other material in any suitable shape.
  • the fan blade (3) of the embodiment comprises generally rectangle shape of thin sheet metal with at least one bore which is provided on a root portion (13) of the fan blade (3).
  • the ceiling fan is not limited to that configuration only.
  • a through hole (16) is also provided on the root portion (13) of the fan blade (3).
  • the through hole (16) can be provided separately from the bores of the fan blade (3).
  • the through hole (16) is almost a rectangular hole which is positioned on middle part in width in the root portion (13) of the fan blade (3). It should be understood that shape and size of the through hole (16) is determined by shape and size of part of ceiling fan to be received.
  • the fan blade (3) further includes a corresponding of frame portion (14).
  • the frame portion (14) may be made by plastic or other suitable material, an embodiment of which is illustrated in Figure 4.
  • the embodiment pictured includes four corresponding frame portion (14) within four fan blades (3).
  • the frame portion (14) can be attached to the rotor so as to rotate therewith.
  • the frame portion (14) further includes at least one retaining member (18, 19, 20), each being generally cylindrical in shape, corresponding to the bores through the root portion (13) of the fan blade (3).
  • the embodiment pictured shows three retaining members (18, 19, 20) which are included two of the retaining members (19, 20) positioned near both ends of the frame portion (14) and the other retaining member (18) positioned almost central part of the frame portion (14).
  • a plurality of protruding member (12) of substantially L-shaped configuration is extending upwardly from a peripheral edge of the rotor.
  • the protruding member (12) is inserted into the through hole (16) to hook the through hole (16) and to hold the fan blade (3) and therefore the fan blade (3) can be fastening to the rotor.
  • a fastening member (17) such as screw extends through the bores and into the retaining members (18, 19, 20) to fix the frame portion (14) to the root portion (12) of the fan blade (3).
  • the screw is then inserted into rotor for the root portion (12) of the fan blade (3) to be attached to the rotor in mounting state.
  • Alternate fastening methods such as bolt and a nut threaded thereabout may be employed to fix the fan blade (3) to the rotor.
  • FIGS. 2 and 3 show a blade mounting member (4) associated with each of the fan blades (3) for preventing a fan blade that has broken to become totally detached from the rotor.
  • the mounting member (4) consists of a piece of wire rod bent into a particular shape.
  • the mounting member has a first portion (5) and second portion (6) and the second portion (6) is formed as a longer portion in length than the first portion (5).
  • the first portion (5) intended to be secured to the protruding member (12) and the second portion (6) intended to hold the fan blade (3).
  • the first portion (5) is defined by two unclose loops (7, 8). One of the unclose loops takes shape of a roughly rectangular loop (7) while the other takes shape almost of a triangular loop (8).
  • the second portion (6) is defined by two long, generally straight, parallel sides, joined at their rear ends with a closed end (11) to form an elongate slot (10). Diameter of the rectangular and triangular loops (8) of the first portion (5) is selected to receive the protruding member (12) of the rotor. Diameter of the elongate slot (10) of the second portion (6) is selected to surround the central retaining member (18) of the frame portion (14) via two slits (15) provided on the frame portion (14). The triangular loop (8) ends with a free end (9) bent around the rectangular loop (7) of the first portion (5) to prevent deformation of the mounting member (5). It will be understood, the mounting member (5) is not limited to that design only.
  • the mounting member (4) has a clip function for fixing to the root portion (13) of the fan blade (3).
  • the mounting member (4) is placed with upper and lower surface of the fan blade interposed by the wire rod. This feature allows improve efficiency during an assembly process.
  • the mounting member (4) is attached in a proper position for the fan blade at the time of factory shipment. When the ceiling fan is to be assembled, it is possible to carry out an assembling work without paying attention to the mounting member (4). Accordingly, it is possible to prevent the attachment of the mounting member (4) to be forgotten.
  • a variety of materials may be used in constructing the mounting member (4).
  • the material should be shaped easily and strong enough to hold the fan blade (3) from falls.
  • Wire rods are especially effective, particularly because they provide a relatively inexpensive material for the mounting member.
  • the first portion (5) is disposed so that the protruding portion (12) hooks the first portion (5) with both rectangular (7) and triangular loops (8).
  • the elongate slot (10) of second portion penetrates two slits (15) provided on the frame portion (14) and surrounds the central retaining member (18) provided by the frame portion (14) of the fan blade (3).
  • weight of the fan blade (3) imposed on the mounting member (4) is then transmitted through the second portion (6) to the first portion (5).
  • the mounting member (4) tends to deform by bending the first portion (5), this will result the first portion (5) to open at its free end (9).
  • the mounting member (4) with the design shown in Figure 2 has been described, it is possible to employ the mounting member in which one closed loop is provided.
  • a continuous length of wire has been bent or otherwise shape into a loop which extends laterally with its free end bent around the other end.
  • the loop can be disposed so that the protruding portion (12) hooks the loop and penetrated the slits (15) of the frame portion (14) and surrounds the central retaining member (18) provided by the frame portion (14) of the fan blade (3).
  • the configuration of the retaining member (18) is not restricted to only this case.
  • the broken fan blade (21) tends to move away from the rotating rotor of the ceiling fan.
  • the broken fan blade (21) can be slide through the elongate slot (10) until the central retaining member (18) of the frame portion (14) is held by the closed end (11) of the second portion (6) from further sliding movement. Therefore, the fall of the broken fan blade (21) can be prevented.
  • the mounting member (4) tries to hold the broken fan blade (21) in extend radially position.
  • the root portion (13) of the broken fan blade (21) is disposed at a position outside the rotor while the other fan blades (3) remain attached to the rotor as shown in Figure 5.
  • Rotating posture of the broken fan blade (21) can be brought into unstable state compared with other fan blades (3). This can provide notification for a user about the broken fan blade (21).
  • the present invention advances the art of ceiling fan by providing one mounting member (4) to prevent the fan blade (3) from fall when the fan blade (3) detaches from the rotor in any reason.
  • the mounting member (4) is universal to fit variety of commonly sized and shaped fan blade and ceiling fan, and provides minimal to no interference with normal operation of the fan blade (3).
  • the mounting member (4) which is made of wire bent into a particular shape would employ a minimal construction of material in its structure. Further, the mounting member (4) holds the broken fan blade (21) in a state which can be provided notification for the user.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un ventilateur de plafond comprenant : un stator (2) dont une extrémité est supportée sur un plafond ; un rotor monté rotatif sur le stator (2) ; une pluralité de pales de ventilateur allongées (3) s'étendant radialement depuis le rotor ; et un élément de montage de pale (4) associé à chacune des pales de ventilateur (4) afin d'empêcher une pale de ventilateur (21) qui s'est cassée de se détacher totalement du rotor.
PCT/MY2016/050028 2016-01-29 2016-04-26 Ventilateur de plafond Ceased WO2017131506A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
MYPI2016700334A MY197905A (en) 2016-01-29 2016-01-29 A ceiling fan
MYPI2016700334 2016-01-29

Publications (1)

Publication Number Publication Date
WO2017131506A1 true WO2017131506A1 (fr) 2017-08-03

Family

ID=59399102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/MY2016/050028 Ceased WO2017131506A1 (fr) 2016-01-29 2016-04-26 Ventilateur de plafond

Country Status (2)

Country Link
MY (1) MY197905A (fr)
WO (1) WO2017131506A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915401A (zh) * 2019-04-18 2019-06-21 雷荣镒 一种具有二次防护的功能智能吊扇
CN110131190A (zh) * 2019-06-21 2019-08-16 建纶电器工业（中山）有限公司 一种带支架的吊扇
WO2020237485A1 (fr) * 2019-05-27 2020-12-03 威刚科技股份有限公司 Dispositif de suspension de ventilateur et dispositif de ventilateur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6619919B2 (en) * 2002-02-04 2003-09-16 Angelo Fan Brace Licensing, Llc Safety hook
US20100129225A1 (en) * 2007-08-07 2010-05-27 Panasonic Corporation Ceiling fan

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6619919B2 (en) * 2002-02-04 2003-09-16 Angelo Fan Brace Licensing, Llc Safety hook
US20100129225A1 (en) * 2007-08-07 2010-05-27 Panasonic Corporation Ceiling fan

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109915401A (zh) * 2019-04-18 2019-06-21 雷荣镒 一种具有二次防护的功能智能吊扇
CN109915401B (zh) * 2019-04-18 2020-06-02 南通拂莱智能装备有限公司 一种具有二次防护的功能智能吊扇
WO2020237485A1 (fr) * 2019-05-27 2020-12-03 威刚科技股份有限公司 Dispositif de suspension de ventilateur et dispositif de ventilateur
CN110131190A (zh) * 2019-06-21 2019-08-16 建纶电器工业（中山）有限公司 一种带支架的吊扇

Also Published As

Publication number Publication date
MY197905A (en) 2023-07-24

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