WO2013145656A1 - 天井扇風機 - Google Patents
天井扇風機 Download PDFInfo
- Publication number
- WO2013145656A1 WO2013145656A1 PCT/JP2013/001919 JP2013001919W WO2013145656A1 WO 2013145656 A1 WO2013145656 A1 WO 2013145656A1 JP 2013001919 W JP2013001919 W JP 2013001919W WO 2013145656 A1 WO2013145656 A1 WO 2013145656A1
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- reinforcing
- root
- blade
- reinforcing portion
- length
- Prior art date
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Classifications
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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
- F04D29/34—Blade mountings
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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
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/088—Ceiling fans
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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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
Definitions
- the present invention relates to a ceiling fan.
- the ceiling fan includes a connecting portion that can be engaged with the ceiling, a motor portion provided at a lower portion of the connecting portion, a support portion that is rotatably provided at the periphery of the motor portion, and a plurality of removably provided support portions. It was comprised from the metal blade
- the blade part maintains the root part fixed to the support part, the wing part that blows air by rotating the support part, and the wing part provided between the root part and the wing part in an inclined state from the horizontal. It was formed from a stepped part.
- wing part was equipped with the bending part bent downward toward the downstream in the rotation direction of a blade
- the strength of the blade portion may be weak. That is, the blade portion rotates and stress is generated in the step portion of the blade portion as a reaction that pushes the air downward.
- the blade portion may be damaged due to metal fatigue due to repeated load.
- a reinforcing part is provided in the blade part, and the strength is improved by this reinforcing part.
- the strength of the portion provided with the reinforcing portion is improved, but stress is concentrated on the portion where the reinforcing portion is not provided.
- the blade portion may be damaged due to metal fatigue due to repeated load during long-term use of the ceiling fan.
- the conventional ceiling fan was provided with a blade drop prevention portion that locks the blade portion to the support portion.
- the attachment of the blade drop prevention part may be forgotten.
- the blade drop prevention portion is fastened together with the blade portion to the support portion with screws.
- This blade drop prevention portion was locked to the blade portion and fixed with tape or the like.
- the blade drop prevention portion is fixed to the support portion together with the blade portion while being fixed to the blade portion by a tape or the like. For this reason, when the tape or the like is peeled off at the site, both the blade drop prevention part and the blade part are mistakenly screwed to the support part, and only the blade part is screwed to the support part. .
- the present invention is a ceiling fan including a connecting portion that engages with a ceiling, a motor portion provided at a lower portion of the connecting portion, a support portion that rotates the periphery of the motor portion, and a plurality of blade portions that are attached to and detached from the support portion. is there.
- the blade part is provided between the root part fixed to the support part, the blade part that blows air by rotation of the rotor part that constitutes the motor part, and the blade part provided between the root part and the tip part of the blade part. It is integrally formed with a stepped portion that is maintained in a state inclined from the horizontal.
- the blade portion includes a bent portion that is bent downward toward the downstream side in the rotation direction of the blade portion, and a first reinforcing portion that extends from the root portion to the middle of the tip portion on the upstream side in the rotation direction of the blade portion.
- a plurality of second reinforcing portions extending from the root portion to the middle of the tip portion are provided between the bent portion and the first reinforcing portion.
- the 1st reinforcement part length of a 1st reinforcement part is longer than the 2nd reinforcement part length of a 2nd reinforcement part.
- the first reinforcing portion and the plurality of second reinforcing portions are provided in such places where stress is likely to concentrate. And since the length of the 1st reinforcement part is made longer than the length of the 2nd reinforcement part, the intensity
- the present invention provides a connecting portion that engages the ceiling, a motor portion provided at a lower portion of the connecting portion, a supporting portion that rotates the periphery of the motor portion, a plurality of fixing portions provided in the supporting portion, and a detachable attachment to the fixing portion.
- It is a ceiling fan provided with the several blade
- the blade part is provided between the root part fixed to the support part, the blade part that blows air by rotation of the rotor part that constitutes the motor part, and the blade part provided between the root part and the tip part of the blade part.
- the root portion has a locking hole and a plurality of fixing holes.
- the blade drop prevention part is composed of a locking part extending from the support part and a locking hole part that the locking part locks.
- the blade portion is fixed to the support portion by a connecting member that is fixed to the fixing portion through the fixing hole portion while the locking portion is inserted into the locking hole portion.
- the blade portion is not fixed to the fixing portion of the support portion by the connecting member unless the locking portion is inserted into the locking hole. Therefore, forgetting to attach the blade drop prevention part is prevented.
- FIG. 1 is a diagram showing an outline of a ceiling fan according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing an outline of the ceiling fan body of the ceiling fan.
- FIG. 3 is a diagram showing an outline of a root portion of a blade portion in the ceiling fan.
- FIG. 4 is a plan view of a blade portion of the ceiling fan.
- FIG. 5 is a side view showing an outline of the first reinforcing portion of the blade portion in the ceiling fan.
- FIG. 6 is a cross-sectional view showing an outline of first and second reinforcing portions of the blade portion in the ceiling fan.
- FIG. 7 is a plan view of different blade portions of the ceiling fan.
- FIG. 8 is a diagram showing an outline of the ceiling fan according to the second embodiment of the present invention.
- FIG. 9 is a diagram showing an outline of the ceiling fan body of the ceiling fan.
- FIG. 10 is a figure which shows the outline
- FIG. 11 is a plan view of a blade portion of the ceiling fan.
- FIG. 12 is a plan view of different blade portions of the ceiling fan.
- FIG. 1 is a diagram showing an outline of a ceiling fan according to Embodiment 1 of the present invention
- FIG. 2 is a diagram showing an outline of a ceiling fan main body of the ceiling fan
- FIG. 3 is an outline of a root portion of a blade portion in the ceiling fan.
- the ceiling fan includes a suspended portion 2 fixed to the ceiling 1 and a ceiling fan main body 3 engaged through the suspended portion 2.
- the ceiling fan main body 3 includes a connecting portion 4, a motor portion 7, a blade portion 11, and a main body cover portion 22.
- the ceiling fan body 3 includes a connecting portion 4 that is suspended from the suspended portion 2 at the upper portion.
- the connecting portion 4 engages with the ceiling 1.
- the connecting portion 4 includes a joint portion 5 that is directly hooked on the hanging portion 2 and a cylindrical pipe portion 6 that is fixed to the lower portion of the joint portion 5.
- the motor part 7 is fixed to the lower part of the pipe part 6.
- the motor unit 7 includes a substantially disc-shaped stator unit 8 that is fixed to the lower portion of the pipe portion 6 and a substantially ring-shaped rotor unit 9 that rotates on the outer periphery of the stator unit 8.
- a rotating support portion 10 is provided on the periphery of the rotor portion 9. That is, the support part 10 rotates the periphery of the motor part 7.
- the support portion 10 includes two fixing portions 23 that are screw holes.
- a plurality of metal blades 11 to be attached to and detached from the support part 10 are fixed to the fixing part 23 with screws 24 as connecting members.
- the blade portion 11 is fixed so as to extend outward from the rotor portion 9.
- the ceiling fan includes the connecting portion 4, the motor portion 7, the support portion 10, and the blade portion 11.
- FIG. 4 is a plan view of the blade portion according to the first embodiment of the present invention. As shown in FIG. 4, the blade portion 11 is integrally formed from a root portion 12, a wing portion 13, and a step portion 14. The material of the blade portion 11 is a metal plate.
- the root portion 12 is located on one motor portion 7 side of the blade portion 11 shown in FIG. Further, the root portion 12 is fixed to the support portion 10 shown in FIG. As shown in FIG. 4, the root portion 12 has two fixing hole portions 15.
- the fixed hole portion 15 has a substantially square plate shape, and is a circular hole fixed to the support portion 10 shown in FIG.
- Each fixing hole portion 15 is located near the end portion on the upstream side 11 c and the end portion on the downstream side 11 b in the rotation direction 11 a of the blade portion 11.
- the blade portion 11 is fixed to the fixing portion 23 shown in FIG. 2 on the upper surface of the support portion 10 by the screw 24 shown in FIG.
- the support portion 10 is formed of a fixed portion 23 and a receiving portion 25.
- the receiving portion 25 is an annular flat plate.
- the receiving portion 25 is located at the peripheral portion of the substantially disc-shaped motor upper cover 26 and has a plurality of holes through which the screws 24 pass.
- the receiving portion 25 and the motor upper cover 26 are integrally formed. 2 to 4, the screw 24 is fixed to the fixing portion 23 of the support portion 10 through the hole of the receiving portion 25 and the fixing hole portion 15 of the blade portion 11, and the blade portion 11 and the motor top
- the cover 26 is fixed to the support portion 10.
- the wing part 13 is located on the other outer side of the wing part 11.
- the wing part 13 blows air when the rotor part 9 shown in FIG. 2 rotates.
- the step portion 14 is located between the root portion 12 and the tip portion 13 a of the wing portion 13. And the level
- the step portion 14 has a flat plate shape extending from the end portion of the root portion 12 to the end portion of the wing portion 13. And the level
- the root portion 12, the wing portion 13, and the step portion 14 are integrally formed. That is, the root portion 12, the wing portion 13, and the step portion 14 are manufactured from one metal plate by pressing.
- the blowing operation of the ceiling fan will be described.
- the rotor unit 9 of the motor unit 7 shown in FIG. 2 rotates.
- the blade portion 11 fixed to the support portion 10 at the periphery of the rotor portion 9 also rotates.
- the wing part 13 shown in FIG. 4 is inclined obliquely downward as it goes from the downstream side 11b to the upstream side 11c in the rotation direction 11a of the wing part 11 by the step part 14, and therefore along the lower surface of the wing part 13.
- the air flowing in this direction is blown from the ceiling 1 side shown in FIG. 1 toward the floor.
- the characteristic of the ceiling fan in the first embodiment is the shape of the blade portion 11.
- the blade portion 11 includes a bent portion 16 that is bent downward on the upstream side 11 c in the rotation direction 11 a of the blade portion 11.
- the blade portion 11 is provided with a first reinforcing portion 17 extending from the root portion 12 to the middle of the tip portion 13a of the blade portion 13 through the step portion 14 on the downstream side 11b in the rotation direction 11a of the blade portion 11.
- the blade portion 11 includes a plurality of second reinforcing portions extending from the root portion 12 to the middle of the tip portion 13a of the wing portion 13 between the bent portion 16 and the first reinforcing portion 17 via the step portion 14. 18 is provided.
- the first reinforcing portion length 17a is longer than the second reinforcing portion length 18a.
- the first reinforcing portion 17 may extend from the root portion 12 to the vicinity of the tip portion 13 a of the wing portion 13 via the stepped portion 14. Thereby, the drooping by the dead weight of the front-end
- FIG. 5 is a side view showing an outline of the first reinforcing portion of the blade part in the ceiling fan according to Embodiment 1 of the present invention
- FIG. 6 is an outline of the first and second reinforcing parts of the blade part in the ceiling fan.
- the first reinforcing portion 17 is formed of a first root side reinforcing portion 19 and a first tip side reinforcing portion 20.
- the first root side reinforcing part 19 is located on the base part 12 side of the blade part 11 and is a drawn part by drawing bead processing.
- the 1st front end side reinforcement part 20 is located in the side of the front-end
- These diaphragm portions have a convex shape in the direction from the lower surface to the upper surface of the blade portion 11. That is, the first root side reinforcing portion 19 and the first tip side reinforcing portion 20 have a convex shape with a curved cross-sectional shape perpendicular to the rotation direction 11 a of the blade portion 11.
- the 1st front end side reinforcement part 20 is located in the front-end
- first tip side reinforcing portion length 20b is longer than the first root side reinforcing portion length 19b.
- the first base side reinforcing portion length 19b is longer than the second reinforcing portion length 18a.
- first tip side reinforcing portion 20 is disposed at a position lower than the first root side reinforcing portion 19. Therefore, the generation of turbulent flow in the first tip side reinforcing portion 20 is further suppressed.
- the first base side reinforcing portion length 19b is longer than the second reinforcing portion length 18a. Therefore, the stress on the downstream side 11b is dispersed, and the degree of stress concentration between the upstream side 11c and the downstream side 11b approaches.
- a first inclined reinforcing portion 21 is provided between the first root side reinforcing portion 19 and the first tip side reinforcing portion 20.
- the first inclined reinforcing portion 21 smoothly connects the first root side reinforcing portion 19 and the first tip side reinforcing portion 20.
- the first inclined reinforcing portion 21 is inclined obliquely downward from the end portion of the first root side reinforcing portion 19 and extends to the end portion of the first tip side reinforcing portion 20. Thereby, the stress concentration between the 1st base side reinforcement part 19 and the 1st front end side reinforcement part 20 from which height differs differs is suppressed.
- the stepped portion 14 extends obliquely downward from the root portion 12 as it goes from the downstream side 11b to the upstream side 11c.
- the second reinforcing portion length 18a shown in FIG. 4 is longer as the height of the step portion 14 in the vertical direction is lower. That is, the second reinforcing portion length 18a becomes shorter from the downstream side 11b toward the upstream side 11c.
- separates from the root part 12 side as it goes to the downstream side 11b from the upstream side 11c.
- the distance that the stepped portion 14 extends obliquely downward from the root portion 12 increases from the downstream side 11b to the upstream side 11c. Therefore, the step 14 reduces the stress concentration on the upstream side 11c from the downstream side 11b.
- the second reinforcing portion length 18a becomes longer from the upstream side 11c toward the downstream side 11b. Therefore, the stress concentration on the downstream side 11b is relieved by the second reinforcing portion 18 rather than the upstream side 11c.
- the stress concentration on the upstream side 11c is alleviated by the step portion 14 on the upstream side 11c
- the stress concentration on the downstream side 11b is alleviated by the second reinforcing portion 18 on the downstream side 11b
- the entire blade portion 11 is Strength is improved.
- the end portion on the root portion 12 side of the blade portion 11 of the first reinforcing portion 17 and the plurality of second reinforcing portions 18 extends to the vicinity of the fixed hole portion 15. That is, the stress is concentrated in the vicinity of the fixed hole portion 15 because the strength is smaller than that of the step portion 14.
- the end portion on the root portion 12 side of the blade portion 11 of the second reinforcing portion 18 is located in the vicinity of the fixed hole portion 15 that supports the weight of the blade portion 11, and therefore the tip portion 13 a side. Stress is concentrated compared to. However, since the edge part by the side of the root part 12 in the blade
- the cross-sectional shape of the plurality of second reinforcing portions 18 is a convex shape.
- the convex second reinforcing part width 18b is larger than the second inter-reinforcing part length 18c between the adjacent second reinforcing parts 18.
- the second reinforcing portion width 18b is larger than the second inter-reinforcing portion length 18c, the second reinforcing portion 18 has a stronger structure and the strength is improved. As a result, the stress generated in the root portion 12 and the step portion 14 in the blade portion 11 including the second reinforcing portion 18 is dispersed, and the strength of the blade portion 11 is further improved.
- FIG. 7 is a plan view of different blade portions of the ceiling fan according to the first embodiment of the present invention.
- the second reinforcing portion 27 is different in shape from the second reinforcing portion 18 of FIG.
- the wing part 13 is provided with a first reinforcing part 17 that extends from the root part 12 to the middle of the tip part 13 a of the wing part 13 through the step part 14. Further, a second reinforcing portion 27 extending from the root portion 12 to the middle of the tip portion 13 a of the wing portion 13 is provided between the bent portion 16 and the first reinforcing portion 17.
- the second reinforcing portions 27 have substantially the same second reinforcing portion length 27a, and the second reinforcing portion width 27b is smaller on the upstream side 11c than the downstream side 11b in the rotation direction 11a of the blade portion 11.
- the second reinforcing portion length 27 a is a length from the root portion 12 of the second reinforcing portion 27 to the middle of the tip portion 13 a of the wing portion 13 through the step portion 14.
- the second reinforcing portion width 27b is a length from the upstream side 11c of the second reinforcing portion 27 toward the downstream side 11b.
- the distance from the base portion 12 to the stepped portion 14 that extends obliquely downward decreases from the upstream side 11c toward the downstream side 11b. Therefore, the stress applied to the downstream side 11b is larger than the stress applied to the upstream side 11c.
- the second reinforcing portion width 27b is larger on the downstream side 11b than on the upstream side 11c. Therefore, in the 2nd reinforcement part 27, the stress added to the downstream side 11b is small compared with the stress added to the upstream side 11c.
- the stepped portion 14 and the plurality of second reinforcing portions 27 disperse the stress generated in the stepped portion 14 and the plurality of second reinforcing portions 27, further improving the strength of the blade portion 11.
- the ends of the first reinforcing portion 17 and the plurality of second reinforcing portions 27 on the base portion 12 side extend to the vicinity of the fixed hole portion 15. That is, since the first reinforcing portion 17 and the plurality of second reinforcing portions 27 extend above the receiving portion 25, the strength in the vicinity of the fixed hole portion 15 is improved. As a result, the stress generated in the vicinity of the fixed hole portion 15 is dispersed, and the strength of the blade portion 11 is further improved.
- the cross-sectional shape of the vertical surface with respect to the rotation direction 11a of the plurality of second reinforcing portions 27 is a curved surface shape.
- the width of the curved surface shape is larger than the length between the adjacent second reinforcing portions 27. That is, since the width of the curved surface shape of the cross section of the second reinforcing portion 27 is larger than the length between the adjacent second reinforcing portions 27, the second reinforcing portion 27 has a stronger structure and the strength is improved. As a result, stress generated in the root portion 12 and the step portion 14 in the blade portion 11 including the second reinforcing portion 27 is dispersed, and the strength of the blade portion 11 is further improved.
- FIG. 8 is a diagram showing an outline of a ceiling fan according to Embodiment 2 of the present invention
- FIG. 9 is a diagram showing an outline of a ceiling fan body of the ceiling fan
- FIG. 10 is an outline of a root part of a blade part of the ceiling fan.
- the ceiling fan includes a connecting portion 4, a motor portion 7, a support portion 10, a blade portion 11, and a blade drop prevention portion 37.
- a plurality of fixing portions 23 are provided in the support portion 10.
- a plurality of metal blade portions 11 are attached to and detached from the fixing portion 23. Further, the blade drop prevention part 37 locks the blade part 11 to the support part 10.
- FIG. 11 is a plan view of a blade portion according to the second embodiment of the present invention.
- the root portion 12 includes a fixing hole portion 15 and a locking hole portion 29 that is one T-shaped hole.
- the locking hole 29 is located at the center in the rotation direction 11 a of the blade portion 11 of the root portion 12. Further, as shown in FIG. 10, the locking hole 29 includes a first square hole 30 and a second square hole 31.
- the first square hole portion 30 has a rectangular shape extending from the root portion 12 toward the stepped portion 14.
- the second square hole portion 31 communicates with the opening end portion on the root portion 12 side of the first square hole portion 30 and has a rectangular shape.
- the second square hole length 31 a in the rotation direction 11 a of the second square hole portion 31 is longer than the first square hole length 30 a in the rotation direction 11 a of the first square hole portion 30.
- the fixing portion 23 is located at the peripheral portion of the rotor portion 9. Moreover, the fixing
- the locking portion 28 extends from the receiving portion 25.
- the locking portion 28 is a T-shaped flat plate extending vertically upward from the peripheral end portion of the receiving portion 25.
- the locking portion 28 includes a first square flat plate portion 32 and a second square flat plate portion 33.
- the first square flat plate portion 32 is a rectangular flat plate extending vertically upward from the peripheral end portion of the receiving portion 25.
- the second square flat plate portion 33 is a rectangular flat plate provided at the upper end portion of the first square flat plate portion 32.
- the second square flat plate portion length 33 a in the rotation direction 11 a of the second square flat plate portion 33 is longer than the first square flat plate portion length 32 a in the rotation direction 11 a of the first square flat plate portion 32.
- the second rectangular flat plate portion length 33a is longer than the first square hole portion length 30a and shorter than the second square hole portion length 31a.
- the first square flat plate part length 32a is shorter than the first square hole part length 30a.
- the locking portion 28 extending from the receiving portion 25 is inserted into the locking hole 29 of the blade portion 11.
- the first square flat plate portion 32 is The first square hole 30 is entered.
- the fixing hole part 15, the hole of the receiving part 25, and the screw hole of the fixing part 23 shown in FIG. 9 communicate.
- the screw 24 is inserted into the two screw holes as the fixing portion 23 through the hole of the receiving portion 25 and the fixing hole portion 15, and the blade portion 11 and the motor upper cover 26 are fixed to the support portion 10. .
- the feature of the second embodiment resides in the blade drop prevention unit 37.
- the blade drop prevention part 37 locks the blade part 11 to the support part 10.
- the blade drop prevention unit 37 includes a locking portion 28 extending from the support portion 10 and a locking hole 29.
- the locking hole 29 is a hole of the root portion 12 where the locking portion 28 is locked.
- the blade portion 11 is fixed to the support portion 10 by a screw 24 that is fixed to the fixing portion 23 through the fixing hole portion 15 with the locking portion 28 inserted into the locking hole portion 29.
- the blade portion 11 is not fixed to the fixing portion 23 by the screw 24 unless the locking portion 28 is inserted into the locking hole 29. Therefore, forgetting to attach the blade drop preventing portion 37 is prevented, and the mounting workability is improved.
- the fixing hole portion 15 is located at the root portion 12 on the upstream side 11 c and the downstream side 11 b in the rotation direction 11 a of the blade portion 11.
- the blade portion 11 includes a plurality of reinforcing portions 34 extending from the root portion 12 to the middle of the tip portion 13a of the wing portion 13.
- the reinforcing portion 34 that is close to the fixing hole portion 15 and provided between the plurality of fixing hole portions 15 is positioned directly above the support portion 10. Further, the reinforcing portions 34 that are close to the fixed hole portion 15 and are provided at the end portion on the upstream side 11 c and the end portion on the downstream side 11 b are positioned away from directly above the support portion 10. Stress is concentrated most between the fixed hole portion 15 and the reinforcing portion 34 provided near the fixed hole portion 15 and at the end portion on the upstream side 11c and the end portion on the downstream side 11b. For this reason, there is a case where the space between the fixed hole portion 15 and the reinforcing portion 34 adjacent to the fixed hole portion 15 is damaged due to metal fatigue caused by repeated load in the long-term use of the ceiling fan.
- wing part 11 is provided with the bending part 16 bent toward the downward direction on the upstream side 11c, and the front-end
- the 1st reinforcement part 17 extended to the middle of is provided.
- the blade portion 11 includes a plurality of second reinforcement portions extending from the root portion 12 to the middle of the tip portion 13a of the wing portion 13 between the bent portion 16 and the first reinforcement portion 17 via the step portion 14. 18 is provided.
- the first reinforcing portion length 17a is longer than the second reinforcing portion length 18a.
- the reinforcing portion 34 includes the first reinforcing portion 17 and the second reinforcing portion 18.
- the stress tends to concentrate on the stepped portion 14 on the upstream side 11c due to the moment generated when the blade portion 11 blows air.
- the first reinforcing portion length 17a is longer than the second reinforcing portion length 18a, the stress on the downstream side 11b is dispersed.
- the stress applied to the upstream side 11c and the downstream side 11b becomes substantially equal.
- the stress generated in the blade portion 11 is dispersed, and the strength of the step portion 14 of the blade portion 11 is improved. Therefore, breakage due to metal fatigue due to repeated load in long-term use is likely to occur between the fixed hole portion 15 and the reinforcing portion 34 adjacent to the fixed hole portion 15.
- wing part 11 of the some 2nd reinforcement part 18 may be extended to the blade
- strength by the 2nd reinforcement part 18 of the root part 12 further improves.
- the second reinforcing portion 18 disperses the stress generated at the end portion on the base portion 12 side, and the strength of the blade portion 11 is further improved.
- the first reinforcing portion 17 may extend from the root portion 12 to the vicinity of the tip portion 13a of the wing portion 13 through the step portion 14. Thereby, the drooping by the dead weight of the front-end
- the first reinforcing portion 17 is formed of a first root side reinforcing portion 19 and a first tip side reinforcing portion 20.
- the first root side reinforcing part 19 is located on the base part 12 side of the blade part 11 and is a drawn part by drawing bead processing.
- the 1st front end side reinforcement part 20 is located in the side of the front-end
- These diaphragm portions have a convex shape in the direction from the lower surface to the upper surface of the blade portion 11. That is, the first root side reinforcing portion 19 and the first tip side reinforcing portion 20 have a convex shape with a curved cross-sectional shape perpendicular to the rotation direction 11 a of the blade portion 11.
- the first tip side reinforcing portion height 20a is lower than the first root side reinforcing portion height 19a. Therefore, the 1st front end side reinforcement part 20 located in the front-end
- the first tip side reinforcing portion length 20b is longer than the first root side reinforcing portion length 19b.
- the first base side reinforcing portion length 19b is longer than the second reinforcing portion length 18a.
- a first inclined reinforcing portion 21 is provided between the first root side reinforcing portion 19 and the first tip side reinforcing portion 20.
- the first inclined reinforcing portion 21 smoothly connects the first root side reinforcing portion 19 and the first tip side reinforcing portion 20.
- the first inclined reinforcing portion 21 is inclined obliquely downward from the end portion of the first root side reinforcing portion 19 and extends to the end portion of the first tip side reinforcing portion 20.
- the stepped portion 14 has a distance extending obliquely downward from the root portion 12 as it goes from the downstream side 11b to the upstream side 11c. Furthermore, the second reinforcing portion length 18a is longer as the vertical height of the step portion 14 is lower. That is, the second reinforcing portion length 18a becomes shorter from the downstream side 11b toward the upstream side 11c. Moreover, the edge part by the side of the front-end
- the second reinforcing portion length 18a becomes longer from the upstream side 11c toward the downstream side 11b. Therefore, the stress concentration on the downstream side 11b is relieved by the second reinforcing portion 18 rather than the upstream side 11c. Therefore, the stress concentration on the upstream side 11c is alleviated by the step portion 14 on the upstream side 11c, and the stress concentration on the downstream side 11b is alleviated by the second reinforcing portion 18 on the downstream side 11b.
- the cross-sectional shape of the vertical surface with respect to the rotation direction 11a of the plurality of second reinforcing portions 18 is a curved surface shape.
- the width of the curved surface shape is larger than the length between the adjacent second reinforcing portions 18.
- the second reinforcing portion 18 since the width of the curved surface shape of the cross section of the second reinforcing portion 18 is larger than the length between the adjacent second reinforcing portions 18, the second reinforcing portion 18 has a stronger structure and the strength is improved. As a result, the stress generated in the root portion 12 and the step portion 14 in the blade portion 11 including the second reinforcing portion 18 is dispersed, and the strength of the blade portion 11 is further improved.
- FIG. 12 is a plan view of different blade portions of the ceiling fan according to the second embodiment of the present invention.
- the first reinforcing portion 17 extends from the root portion 12 to the middle of the tip portion 13 a of the wing portion 13 through the step portion 14.
- the second reinforcing portion 35 extends between the bent portion 16 and the first reinforcing portion 17 from the root portion 12 to the middle of the tip portion 13 a of the wing portion 13 via the stepped portion 14.
- the second reinforcing portions 35 have substantially the same second reinforcing portion length 35a, and the second reinforcing portion width 35b is smaller on the upstream side 11c than on the downstream side 11b.
- the second reinforcing portion length 35 a is a length in a direction extending from the root portion 12 to the tip portion 13 a of the wing portion 13 via the stepped portion 14.
- the second reinforcing portion width 35b is a length from the upstream side 11c toward the downstream side 11b.
- the second reinforcing portion width 35b is larger on the downstream side 11b than on the upstream side 11c. Therefore, the stress of the downstream side 11b is relieved by the second reinforcing portion 35 from the upstream side 11c.
- the stress generated in the stepped portion 14 and the plurality of second reinforcing portions 35 is dispersed by the stepped portion 14 and the plurality of second reinforcing portions 35. Therefore, breakage due to metal fatigue caused by repeated load in the long-term use of the ceiling fan is likely to occur between the fixed hole portion 15 and the second reinforcing portion 35 adjacent to the fixed hole portion 15.
- wing part 11 of the some 2nd reinforcement part 35 may be extended to the blade
- strength by the 2nd reinforcement part 35 of the root part 12 further improves. That is, the stress generated at the end of the second reinforcing portion 35 on the base portion 12 side is dispersed, and the strength of the blade portion 11 is further improved.
- the second reinforcing portion width 35b may be reduced from the downstream side 11b toward the upstream side 11c.
- the cross-sectional shape of the vertical surface with respect to the rotation direction 11a of the plurality of second reinforcing portions 35 is a curved surface shape.
- the width of the curved surface shape is larger than the length between the adjacent second reinforcing portions 35.
- the second reinforcing portion 35 since the width of the curved surface shape of the cross section of the second reinforcing portion 35 is larger than the length between the adjacent second reinforcing portions 35, the second reinforcing portion 35 has a stronger structure and the strength is improved. As a result, the stress generated in the root portion 12 and the step portion 14 in the blade portion 11 including the second reinforcing portion 35 is dispersed, and the strength of the blade portion 11 is further improved.
- the present invention is expected to be used as a ceiling fan for home and office use.
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Abstract
Description
図1は本発明の実施の形態1の天井扇風機の概要を示す図、図2は同天井扇風機の天井扇風機本体の概要を示す図、図3は同天井扇風機における羽根部の根元部の概要を示す図である。
本発明の実施の形態2では、実施の形態1と同じ構成要素には同一の符号を付し、異なる点のみを説明する。図8は本発明の実施の形態2の天井扇風機の概要を示す図、図9は同天井扇風機の天井扇風機本体の概要を示す図、図10は、同天井扇風機の羽根部の根元部の概要を示す図である。図8~図10に示すように天井扇風機は連結部4と、モータ部7と、支持部10と、羽根部11と、羽根落下防止部37とを備えている。ここで複数の固定部23が、支持部10に備えられている。また複数の金属製の羽根部11が、固定部23に着脱する。また羽根落下防止部37は、羽根部11を支持部10に係止する。
2 吊下部
3 天井扇風機本体
4 連結部
5 ジョイント部分
6 パイプ部分
7 モータ部
8 ステータ部
9 ロータ部
10 支持部
11 羽根部
11a 回転方向
11b 下流側
11c 上流側
11d 羽根部端部
12 根元部
13 翼部
13a 先端部
14 段差部
15 固定孔部
16 折り曲げ部
17 第1の補強部
17a 第1の補強部長さ
18 第2の補強部
18a 第2の補強部長さ
18b 第2の補強部幅
18c 第2の補強部間長さ
19 第1の根元側補強部
19a 第1の根元側補強部高さ
19b 第1の根元側補強部長さ
20 第1の先端側補強部
20a 第1の先端側補強部高さ
20b 第1の先端側補強部長さ
21 第1の傾斜補強部
22 本体カバー部
23 固定部
24 ネジ(連結部材)
25 受け部
26 モータ上カバー
27,35 第2の補強部
27a,35a 第2の補強部長さ
27b,35b 第2の補強部幅
28 係止部
29 係止用孔部
30 第1の四角孔部
30a 第1の四角孔部長さ
31 第2の四角孔部
31a 第2の四角孔部長さ
32 第1の四角平板部
32a 第1の四角平板部長さ
33 第2の四角平板部
33a 第2の四角平板部長さ
34 補強部
37 羽根落下防止部
Claims (17)
- 天井に係合する連結部と、
前記連結部の下部に備えたモータ部と、
前記モータ部の周縁を回転する支持部と、
前記支持部に着脱する複数の羽根部とを備えた天井扇風機であって、
前記羽根部は前記支持部に固定される根元部と、
前記モータ部を構成するロータ部が回転することにより空気を送風する翼部と、
前記根元部と前記翼部の先端部との間に備えられ前記翼部を水平より傾けた状態に維持する段差部とから一体に形成され、
前記羽根部は前記羽根部の回転方向における上流側に下方に向けて折り曲げられた折り曲げ部と、
前記羽根部の回転方向における上流側に前記根元部から前記先端部の途中まで伸びた第1の補強部と、
前記折り曲げ部と前記第1の補強部との間に前記根元部から前記先端部の途中まで伸びた複数の第2の補強部とを備え、
前記第1の補強部の第1の補強部長さは前記第2の補強部の第2の補強部長さより長いことを特徴とする天井扇風機。 - 前記第1の補強部は前記根元部の側に位置し、前記回転方向に対する垂直面の断面形状が凸形状の第1の根元側補強部と、
前記先端部の側に位置する前記断面形状が凸形状の第1の先端側補強部とから形成され、
前記第1の先端側補強部の第1の先端側補強部高さは前記第1の根元側補強部の第1の根元側補強部高さより低いことを特徴とする請求項1に記載の天井扇風機。 - 前記第1の先端側補強部の第1の先端側補強部長さは前記第1の根元側補強部の第1の根元側補強部長さより長く、
前記第1の根元側補強部長さは前記第2の補強部長さより長いことを特徴とする請求項2に記載の天井扇風機。 - 第1の傾斜補強部が前記第1の根元側補強部と前記第1の先端側補強部との間に設けられ、前記第1の根元側補強部と前記第1の先端側補強部とを連結することを特徴とする請求項3に記載の天井扇風機。
- 前記段差部は前記下流側から前記上流側へ向かうにしたがって前記根元部から斜め下方へ伸びる距離が大きくなると共に、前記第2の補強部長さは前記下流側から前記上流側へ向かうにしたがって短くなることを特徴とする請求項1に記載の天井扇風機。
- 前記段差部は前記下流側から前記上流側へ向かうにしたがって前記根元部から斜め下方へ伸びる距離が大きくなると共に、前記第2の補強部の前記上流側から前記下流側へ向かう長さである第2の補強部幅は前記上流側より前記下流側が大きいことを特徴とする請求項1に記載の天井扇風機。
- 前記支持部は複数の固定部を備え、前記根元部は複数の固定孔部を有し、
前記羽根部は前記固定孔部を介して連結部材によって前記支持部に固定され、前記第1の補強部および複数の前記第2の補強部が前記固定孔部の近傍まで伸びたことを特徴とする請求項1に記載の天井扇風機。 - 複数の前記第2の補強部は、前記羽根部の羽根部端部まで伸びたことを特徴とする請求項1に記載の天井扇風機。
- 複数の前記第2の補強部の前記回転方向に対する垂直面の断面形状は凸形状であり、前記凸形状の第2の補強部幅は隣り合う前記第2の補強部間の第2の補強部間長さより大きいことを特徴とする請求項1に記載の天井扇風機。
- 天井に係合する連結部と、
前記連結部の下部に備えたモータ部と、
前記モータ部の周縁を回転する支持部と、
前記支持部に備えた複数の固定部と、
前記固定部に着脱する複数の羽根部と、
前記羽根部を前記支持部に係止する羽根落下防止部とを備えた天井扇風機であって、
前記羽根部は前記支持部に固定される根元部と、
前記モータ部を構成するロータ部が回転することにより空気を送風する翼部と、
前記根元部と前記翼部の先端部との間に備えられ前記翼部を水平より傾けた状態に維持する段差部とから一体に形成され、
前記根元部は係止用孔部と複数の固定孔部とを有し、
前記羽根落下防止部は前記支持部から伸びる係止部と、
前記係止部が係止する前記係止用孔部とから構成され、
前記羽根部は前記係止部が前記係止用孔部に挿入されると共に、前記固定孔部を介して前記固定部に固定する連結部材によって前記支持部に固定されることを特徴とする天井扇風機。 - 前記固定孔部は前記根元部において前記羽根部の回転方向の上流側と下流側とに位置し、
前記羽根部は前記根元部から前記先端部の途中まで伸びた複数の補強部を備え、前記固定孔部に近接すると共に複数の前記固定孔部の間に設けた前記補強部の少なくとも一部は前記支持部の真上に位置し、前記固定孔部に近接すると共に前記上流側の端部および前記下流側の端部に設けた前記補強部は、前記支持部の真上から離れて位置することを特徴とする請求項10に記載の天井扇風機。 - 前記補強部は第1の補強部と第2の補強部とから構成され、
前記羽根部は前記上流側に下方に向けて折り曲げられた折り曲げ部と、
前記下流側に前記根元部から前記先端部の途中まで伸びた前記第1の補強部と、
前記折り曲げ部と前記第1の補強部との間に前記根元部から前記先端部の途中まで伸びた複数の前記第2の補強部とを備え、
前記第1の補強部の第1の補強部長さは前記第2の補強部の第2の補強部長さより長いことを特徴とする請求項11に記載の天井扇風機。 - 前記第1の補強部は前記根元部の側に位置し、前記回転方向に対する垂直面の断面形状が凸形状の第1の根元側補強部と、
前記先端部の側に位置する前記断面形状が凸形状である第1の先端側補強部とから形成され、
前記第1の先端側補強部の第1の先端側補強部高さは前記第1の根元側補強部の第1の根元側補強部高さより低いことを特徴とする請求項12に記載の天井扇風機。 - 前記第1の先端側補強部の第1の先端側補強部長さは前記第1の根元側補強部の第1の根元側補強部長さより長く、
前記第1の根元側補強部長さは前記第2の補強部長さより長いことを特徴とする請求項13に記載の天井扇風機。 - 第1の傾斜補強部が前記第1の根元側補強部と前記第1の先端側補強部との間に設けられ、前記第1の根元側補強部と前記第1の先端側補強部とを連結することを特徴とする請求項14に記載の天井扇風機。
- 前記段差部は前記下流側から前記上流側へ向かうにしたがって前記根元部から斜め下方へ伸びる距離が大きくなると共に、前記第2の補強部長さは前記下流側から前記上流側へ向かうにしたがって短くなることを特徴とする請求項12に記載の天井扇風機。
- 前記段差部は前記下流側から前記上流側へ向かうにしたがって前記根元部から斜め下方へ伸びる距離が大きくなると共に、前記第2の補強部の前記上流側から前記下流側へ向かう長さである第2の補強部幅は前記下流側より前記上流側が小さいことを特徴とする請求項12に記載の天井扇風機。
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JP2014507408A JP6260000B2 (ja) | 2012-03-26 | 2013-03-21 | 天井扇風機 |
US14/384,679 US9915268B2 (en) | 2012-03-26 | 2013-03-21 | Ceiling fan having reinforcements |
CN201380017039.8A CN104246233B (zh) | 2012-03-26 | 2013-03-21 | 吊顶风扇 |
US16/425,374 USRE48538E1 (en) | 2012-03-26 | 2013-03-21 | Ceiling fan having reinforcements |
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JP2012-069317 | 2012-03-26 | ||
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JP2013014020 | 2013-01-29 | ||
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USD759799S1 (en) * | 2015-04-15 | 2016-06-21 | Youngo Limited | Ceiling fan motor housing and light kit |
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USD797917S1 (en) | 2015-08-17 | 2017-09-19 | Delta T Corporation | Fan with light |
USD847969S1 (en) | 2016-01-04 | 2019-05-07 | Delta T, Llc | Fan canopy |
CN105604969B (zh) * | 2016-03-09 | 2017-12-19 | 叶志荣 | 一种吊顶风扇 |
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Also Published As
Publication number | Publication date |
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JP6260000B2 (ja) | 2018-01-17 |
MY168451A (en) | 2018-11-09 |
CN104246233B (zh) | 2017-03-08 |
US20150086375A1 (en) | 2015-03-26 |
USRE48538E1 (en) | 2021-04-27 |
US9915268B2 (en) | 2018-03-13 |
CN104246233A (zh) | 2014-12-24 |
JPWO2013145656A1 (ja) | 2015-12-10 |
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