CN205544724U - Motor and ceiling fan for ceiling fan - Google Patents

Abstract

The utility model relates to a motor and ceiling fan for ceiling fan, the ceiling fan motor includes static portion, rotating part and bearing portion, bearing portion has the upside bearing, the downside bearing and be located the upside bearing and the downside bearing between blocking part spare and elastomeric element, the bearing retainer portion of rotating part has the upside removal suppression portion of the outer lane of suppression upside bearing to the top removal, the axle of static portion has the downside that the inner circle that restraines the downside bearing removed downwards and removes suppression portion, arbitrary position among blocking part spare and the elastomeric element is between the inner circle upper and lower direction each other of the inner circle of upside bearing and downside bearing, the outer lane upper and lower direction each other that the another party is located outer lane and the downside bearing of upside bearing is between, arbitrary side in the gomphosis of the inner circle of upside bearing and downside bearing and axle and the gomphosis of outer lane and bearing retainer portion perhaps two sides be can relative movement clearance fit, restriction axle lies in the top or the below of bearing portion for the anticreep parts to the removal of downside of rotating part.

Description

Ceiling fan motor and ceiling fan

Technical field

This utility model relates to ceiling fan motor and ceiling fan.

Background technology

It was known to a kind of ceiling fan (such as Japanese Kokai being provided with pair of bearings between quill shaft and rotor in the past 2008-128027 publication).In such ceiling fan, quill shaft is pressed into the inner ring of bearing.

But, according to the bearing arrangement in Japanese Kokai 2008-128027 publication, because fixing at quill shaft There is the inner ring of pair of bearings, therefore, it is difficult to insert the elastomer for applying precompressed between pair of bearings, need to pass through Complicated operation assembles.

Utility model content

In view of problem above, the purpose of this utility model is to provide the ceiling fan of the assembling carrying out bearing portion with comparalive ease and uses Motor and ceiling fan.

An exemplary embodiment of ceiling fan motor of the present utility model includes: stationary part；Rotating part, it is relative Rotate in described stationary part；And bearing portion, its by described rotating part support for can rotate relative to described stationary part, Described stationary part has: axle, and it is centered by vertically extending central axis；And stator, it is fixed on Described axle, described rotating part has: rotor magnet, and it is positioned at the radial outside of described stator；The Magnet of tubular keeps Frame portion, it keeps described rotor magnet；And the retainer portion of tubular, it is connected with described Magnet retainer portion And keeping described bearing portion, described bearing portion to have: upside bearing and lower side bearing, they arrange at above-below direction； And distance member and elastomeric element, they are between the above-below direction of described upside bearing and described lower side bearing, Described ceiling fan motor is characterised by, described retainer portion has upper side shifting suppressing portion, and it suppresses on described The movement upward of the outer ring of side bearing, described axle has lower side shifting suppressing portion, and it suppresses described lower side bearing Either one in the movement downwards of inner ring, described distance member and described elastomeric element is positioned at described upside bearing Between the inner ring of inner ring and described lower side bearing above-below direction each other, in described distance member and described elastomeric element The opposing party between the above-below direction each other of the outer ring of the outer ring of described upside bearing and described lower side bearing, described on The inner ring of side bearing and the inner ring of described lower side bearing and the Qian He of described axle and the outer ring of described upside bearing and institute State either one in the outer ring of lower side bearing and the Qian He in described retainer portion or two sides are can relative movement Matched in clearance, retaining member is positioned at the either above or below of described bearing portion, and described retaining member limits described axle phase The movement to downside for described rotating part.

An exemplary embodiment of ceiling fan of the present utility model is characterised by having: described ceiling fan motor； And multiple moving vane, they are radially fixed on described rotating part.

According to exemplary embodiment of the present utility model, it is provided that carry out the ceiling fan of the assembling of bearing portion with comparalive ease With motor and ceiling fan.

Accompanying drawing explanation

Fig. 1 is the axonometric chart of the ceiling fan illustrating embodiment.

Fig. 2 is the sectional view of the ceiling fan motor illustrating embodiment, and is the section view of the bearing portion including variation 1 The figure of figure.

Fig. 3 is the sectional view of the bearing portion of variation 2.

Fig. 4 is the sectional view of the bearing portion of variation 3.

Detailed description of the invention

Hereinafter, referring to the drawings the ceiling fan motor involved by embodiment of the present utility model and ceiling fan are said Bright.It addition, scope of the present utility model is not limited to following embodiment, it is possible to think in technology of the present utility model Change arbitrarily in the range of thinking.Further, in figures in the following, for each structure easy to understand, exist and make respectively The situation that scale in structure, number etc. are different from actual structure.

Further, in the accompanying drawings, suitably illustrate that XYZ coordinate system is as three-dimensional cartesian coordinate system.In XYZ coordinate system, Z-direction is above-below direction.X-direction is the left and right directions of Fig. 2 in the direction orthogonal with Z-direction.Y-axis is With X-direction and this two upright direction handed over of Z-direction.

Further, in the case of being not particularly limited, in the following description, will be with (Z-direction) along the vertical direction Radial direction centered by the central axis J extended referred to as " radially ", by the circumference centered by central axis J, i.e. Around the direction (θ Z-direction) of central axis J referred to as " circumferential ".It addition, above-below direction (Z-direction) phase Axial when in central axis J.

It addition, in this manual, vertically extending refer to except the most along the vertical direction (Z-direction) Outside situation about extending, also include along the direction extension tilted in the range of less than 45 degree relative to above-below direction Situation.

Further, in this manual, radially extend refer to except the most radially, i.e. with above-below direction (Z axis Direction) outside the situation about extending of vertical direction, also include along relative to radially inclination in the range of less than 45 degree Direction extend situation.

Fig. 1 is the axonometric chart of the ceiling fan 1 illustrating present embodiment.

As it is shown in figure 1, the ceiling fan 1 of present embodiment has ceiling fan motor 10 and is installed on ceiling fan motor 10 Multiple moving vanes 2.Ceiling fan 1 is such as arranged at ceiling.

Moving vane 2 is installed on ceiling fan motor 10.Multiple moving vanes 2 are radially fixed on upside described later horse Reach the flange part 54 of cover 50.In the illustration of Fig. 1, moving vane 2 is provided with three.

Fig. 2 is the sectional view of the ceiling fan motor 10 illustrating present embodiment.Ceiling fan motor 10 is the brushless horse of DC Reach.

Ceiling fan motor 10 has stationary part 3, bearing portion 5 and rotating part 4.

Stationary part 3 has axle 20, stator 30 and circuit board 60.

Bearing portion 5 has upside parts of bearings 5A and downside parts of bearings 5B.Rotating part 4 is supported by bearing portion 5 Can rotate relative to stationary part 3.

Rotating part 4 has upside motor cover 50, rotor magnet 40 and downside motor cover 55.Rotating part 4 relative to Stationary part 3 rotates.

Axle 20 is the cylindrical duct centered by the central axis J that (Z-direction) extends along the vertical direction.Axle 20 The end of upside (+Z side) is such as fixed in the not shown installation portion fixed at ceiling etc..Stator 30 is fixed Bottom in axle 20.Circuit board 60 is arranged at the downside (-Z side) of axle 20 and stator 30.Further, circuit board 60 Plate face be arranged in the direction orthogonal with central axis J.Rotating part 4 is supported as can be relative to axle by bearing portion 5 20 rotate.Bearing portion 5 is arranged on the part of the top side of ratio stator 30 of axle 20.Upside motor cover 50 has fixed Son 30 is in the Magnet retainer portion 51 of the tubular circumferentially surrounded.Rotor magnet 40 is fixed on Magnet retainer portion 51 Inner peripheral surface.Downside motor cover 55 is installed on the downside of upside motor cover 50.Downside motor cover 55 covering board 60. Circuit board 60 controls the rotation of rotating part 4.

Hereinafter, each part is described in detail.

In the present embodiment, axle 20 is the axle of the hollow that (Z-direction) extends along the vertical direction.Axle 20 is upper Side (+Z side) and downside (-Z side) opening.The installation of through shaft 20 diametrically it is provided with on the top of axle 20 Hole 20e.Axle 20 is fixed on the not shown installation portion fixed at ceiling etc. by installing hole 20e.

The part of the position of the top side of motor cover 50 (+Z side) on the upside of the ratio of outer peripheral face 20a being positioned at axle 20, It is provided with wiring hole portion, the upside 20b of the inside of connection shaft 20.

At the outer peripheral face 20a of axle 20, set gradually back-up ring mounting groove 20f, first step portion 21 and second from above Stage portion 22.

At back-up ring mounting groove 20f, back-up ring 25 is installed.Back-up ring 25 comes off to upside as parts of bearings 5A on the upside of suppression Retaining member and play a role.First step portion 21 contacts with the downside parts of bearings 5B of bearing portion 5.Second Rank portion 22 is positioned at the lower end of the outer peripheral face 20a of axle 20.

At the outer peripheral face 20a of axle 20, using the region between back-up ring mounting groove 20f and first step portion 21 as first Region 20A.At the outer peripheral face 20a of axle 20, using the region between first step portion 21 and second step portion 22 as Second area 20B.At the outer peripheral face 20a of axle 20, using the region from 22 to lower end, second step portion as the 3rd district Territory 20C.

About the diameter of the outer peripheral face 20a of axle 20, second area 20B is bigger than first area 20A, the 3rd region 20C Bigger than second area 20B.

Side bearing parts 5A and downside parts of bearings 5B is installed at first area 20A.Further, at second area 20B Press-in stator 30.Knurled finish 20c it is provided with at least partially at second area 20B.Stator at axle 20 The underface of 30 arranges the second step portion 22 prominent to radial outside.

Stator 30 is fixed on the bottom of axle 20.Stator 30 has stator core 31, coil 32 and insulating part 33.

Stator core 31 has core-back 31a and teeth portion 31b.

The shape of core-back 31a is the cylindrical shape concentric with central axis J.Core-back 31a is pressed into axle Fix at the knurled finish 20c that the outer peripheral face 20a of 20 is arranged.

The external diameter in the second step portion 22 of the interior diameter ratio shaft 20 of core-back 31a is little.Second step portion 22 is as pressing down Retaining member that core-back 31a processed comes off to downside and play a role.Thus, even bearing portion 5 is only arranged at The one-sided configuration of the upside of stator 30, stator 30 also will not come off from axle 20.

Teeth portion 31b extends from the periphery of core-back 31a towards radial outside.Teeth portion 31b is provided with multiple, and The circumference of the outer peripheral face of core-back 31a is with impartial interval configuration.

Insulating part 33 is made up of a pair parts (upside insulating part and lower-side insulation part).Insulating part 33 is from above-below direction Teeth portion 31b of covering stator iron core 31.Further, insulating part 33 covers the circumferential both sides of teeth portion 31b.Insulating part 33 e.g. resins.

Insulating part 33 has the be screwed portion 33a prominent to downside (-Z side).The portion 33a of being screwed is e.g. Drum.Inner peripheral surface at the portion 33a that is screwed is provided with female thread.It is threadably secured at insulating part 33 Portion's 33a fixing circuit board 60.

Coil 32 is made up of coiled electrical conductor.Coil 32 is wound in stator core 31 across insulating part 33.Constitute line The winding wire 32a of circle 32 is pulled around to circuit board 60.

Rotating part 4 is supported as rotating relative to stationary part 3 by bearing portion 5.Bearing portion 5 is positioned at than stator 30 The position of top side.Bearing portion 5 is kept by the retainer portion 53 of upside motor cover 50.

Bearing portion 5 has pair of bearings parts (upside parts of bearings (the hereinafter referred to as upper shaft in above-below direction arrangement Hold) 5A and downside parts of bearings (hereinafter referred to as descending side bearing) 5B), distance member 26 and elastomeric element 27. In the inner side in retainer portion 53, upside bearing 5A is positioned at upside, and lower side bearing 5B is positioned at downside.Spacer portion Part 26 and elastomeric element 27 are between the above-below direction of upside bearing 5A and lower side bearing 5B.

Upside bearing 5A and lower side bearing 5B is made up of ball bearing.Upside bearing 5A has inner ring 5Aa, outer ring 5Ab And rolling element 5Ac.Similarly, lower side bearing 5B has inner ring 5Ba, outer ring 5Bb and rolling element 5Bc. Inner ring 5Aa, 5Ba surround axle 20 from radial outside respectively.Further, outer ring 5Ab, 5Bb is respectively by retainer Portion 53 surrounds from radial outside.Rolling element 5Ac, 5Bc are positioned at the radial direction of inner ring 5Aa, 5Ba and outer ring 5Ab, 5Bb Between.

The outer ring 5Bb of the outer ring 5Ab and lower side bearing 5B of upside bearing 5A is fixed in retainer portion 53 Inner peripheral surface and constitute Fixed Division 53c.Outer ring 5Ab, 5Bb of Fixed Division 53c and the fixing side in retainer portion 53 Method is the most bonding.It addition, the fixing means of Fixed Division 53c can also be pressed into.

Axle 20 is inserted at the inner ring 5Ba of the inner ring 5Aa and lower side bearing 5B of upside bearing 5A.Inner ring 5Aa, 5Ba Chimeric with axle 20 is matched in clearance.Therefore, axle 20 can move at above-below direction relative to inner ring 5Aa, 5Ba.

Upside bearing 5A outer ring 5Ab contact with the rising wood 53a in retainer portion 53 at upper surface, and under Surface contacts with distance member 26.Further, the inner ring 5Aa of upside bearing 5A at upper surface across gap and back-up ring 25 in opposite directions, and contacts with elastomeric element 27 at lower surface.

The outer ring 5Bb of lower side bearing 5B contacts with distance member 26 at upper surface.Further, lower side bearing 5B's is interior Circle 5Ba contacts with elastomeric element 27 at upper surface, and at lower surface and the first of the outer peripheral face 20a being arranged at axle 20 Stage portion 21 contacts.

The outer ring 5Ab of upside bearing 5A fixes with retainer portion 53 at Fixed Division 53c.Further, bearing keeps The upper surface of the outer ring 5Ab of the rising wood 53a in frame portion 53 and upside bearing 5A.Fixed Division 53c and rising wood The upper side shifting suppressing portion that 53a is moved upward as the outer ring 5Ab of bearing 5A on the upside of limiting plays a role.That is, Retainer portion 53 has upper side shifting suppressing portion (Fixed Division 53c and rising wood 53a).Bearing portion 5 is in upside The weight of mobile suppressing portion (Fixed Division 53c and rising wood 53a) place supporting rotating part 4.

The first step portion 21 of axle 20 contacts with the lower surface of the inner ring 5Ba of lower side bearing 5B.Thus, First The lower side shifting suppressing portion that rank portion 21 moves downwards as the inner ring 5Ba limiting lower side bearing 5B plays a role. That is, axle 20 has lower side shifting suppressing portion (first step portion 21).Axle 20 is at lower side shifting suppressing portion (First Rank portion 21) place's support shaft bearing portion 5 and the weight of rotating part 4.

Distance member 26 has substantially cylindrical shape.Distance member 26 is positioned at upside bearing 5A and lower side bearing 5B Between, and contact with outer ring 5Ab, 5Bb respectively.That is, distance member 26 is positioned at the outer ring 5Ab of upside bearing 5A And between the above-below direction that the outer ring 5Bb of lower side bearing 5B is each other.

The size of the above-below direction of distance member 26 is the size of the above-below direction of upside bearing 5A and lower side bearing 5B More than half of summation of size of above-below direction.Bearing on the upside of the size decision of the above-below direction of distance member 26 Distance between 5A and lower side bearing 5B.Distance member 26 is by making the upside bearing of the fulcrum as holding shaft 20 5A is separated from one another with lower side bearing 5B such that it is able to suppression bearing portion 5 skew when rotated.

Elastomeric element 27 is pre-compressed spring.In the present embodiment, although elastomeric element 27 is helical spring, but It can also be the leaf spring such as disc spring, corrugated gasket.

Elastomeric element 27 is circumferentially surrounding axle 20.Further, elastomeric element 27 is arranged in upper shaft with the state of compression Hold the inner ring of the inner ring of 5A and lower side bearing 5B each other.That is, elastomeric element 27 is positioned at upside bearing 5A's Between the inner ring 5Ba of circle 5Aa and lower side bearing 5B above-below direction each other.The compression stress of elastomeric element 27 is than rotating The weight in portion 4 is big.More specifically, elastomeric element 27 is compressed with following compression stress: rotating part 4 stops Time from more than the 120% of the load (weight of rotating part 4) in the direction, downside that rotating part 4 applies to stationary part 3 Compression stress.Thus, elastomeric element 27 applies precompressed to upside bearing 5A and lower side bearing 5B.

In the position of the top side of inner ring 5Aa than upside bearing 5A, back-up ring 25 is set at the outer peripheral face 20a of axle 20. Back-up ring 25 is positioned at the top of bearing portion 5, and limits axle 20 relative to rotating part 4 to the movement of downside.Thus, gear The retaining member that circle 25 comes off to downside from bearing portion 5 as suppression axle 20 plays a role.It addition, by axle Under 20 states hanging on ceiling, retaining member (back-up ring) 25 not inner ring 5Aa with upside bearing 5A contacts.

It follows that the effect to the bearing portion 5 in present embodiment illustrates.

Owing to the outer ring 5Bb of the outer ring 5Ab and lower side bearing 5B of upside bearing 5A is fixed on axle by Fixed Division 53c Hold retainer portion 53, therefore do not move at above-below direction.It addition, inner ring 5Aa, 5Ba by elastomeric element 27 with rotation More than the weight of transfer part 4 power diffusion and move to the direction mutually left.Thus, to upside bearing 5A apply to On precompressed, and lower side bearing 5B is applied downward precompressed.Further, upside bearing 5A and lower side bearing 5B Rolling element 5Ac, 5Bc contact with inner ring 5Aa, 5Ba and outer ring 5Ab, 5Bb in opposite directions.That is, Rolling element 5Ac contacts with inner ring 5Aa on the surface of axially downside and radially inner side, and side and radial outside in the axial direction Surface contact with outer ring 5Ab.The surface of rolling element 5Bc side in the axial direction and radially inner side contacts with inner ring 5Ba, And contact with outer ring 5Bb on the surface of axially downside and radial outside.As an example, in the weight of rotating part 4 In the case of being 4kgf for the compression stress of 3kgf and elastomeric element 27, upside bearing 5A is applied the precompressed of 4kgf, Lower side bearing 5B is applied the precompressed of 1kgf.

The bearing portion 5 of present embodiment is by applying mutual rightabout pre-to upside bearing 5A and lower side bearing 5B Pressure, keeps stable without offseting with either one in lower section upward.Therefore, bearing portion 5 can suppress ceiling fan The vibration of 1 and noise.

Bearing portion 5 such as can assemble through following operation.

First, it is coated with the retainer portion 53 of bonding agent at inner peripheral surface and is sequentially inserted into upside bearing 5A, spacer portion Part 26, lower side bearing 5B.Upside bearing 5A is inserted into the rising wood 53a of outer ring 5Ab and retainer portion 53 The position of contact.Owing to being provided with rising wood 53a, therefore, it is possible to be easily positioned upside bearing 5A, thus assemble change Obtain easily.Further, owing to being provided with distance member 26, it is possible to be easily determined by upside bearing 5A and lower side bearing The distance of the above-below direction of 5B, thus assemble and become easy.

It follows that at the inner ring of the inner ring 5Aa and lower side bearing 5B that elastomeric element 27 is held on upside bearing 5A Under state between 5Ba above-below direction each other, axle 20 is inserted inner ring 5Aa, 5Ba.Additionally, it is preferred that at axle 20 Outer peripheral face 20a smear lubricant in advance.

It follows that back-up ring 25 to be installed on the back-up ring mounting groove 20f of axle 20.

Through above operation, complete assembling procedure.

Like this, according to the bearing portion 5 of present embodiment, owing to the chimeric of inner ring 5Aa, 5Ba Yu axle 20 is gap Coordinate, it is possible to carry out the axle 20 insertion to inner ring 5Aa, 5Ba finally.Therefore, distance member 26 and elastic The assembling of part 27 becomes easy, thus bearing portion 5 can manufacture as entirely through simple assembling procedure.

As it is shown in figure 1, upside motor cover 50 is the cover from upside (+Z side) covering stator 30.Upside motor cover 50 are supported to rotate around central axis J (± θ Z-direction) relative to axle 20 by bearing portion 5.

Upside motor cover 50 is the pressing products being connected as a single entity.By making upside motor cover 50 for pressing products, it is possible to The intensity of motor cover 50 on the upside of raising.Thus, upside motor cover 50 in retainer portion 53, Magnet retainer Can firmly and respectively holding shaft bearing portion 5, rotor magnet 40 and moving vane 2 at portion 51 and flange part 54.

Upside motor cover 50 is ferromagnetic.As long as the material of upside motor cover 50 has ferromagnetic material the most not Special restriction need to be made, such as, can use the alloy including ferrum, cobalt, nickel.Upside motor cover 50 plays rotor yoke Effect.Therefore, ceiling fan motor 10 need not especially arrange rotor yoke such that it is able to reduces number of parts.

Upside motor cover 50 has Magnet retainer portion 51, top plate portion 52, retainer portion 53 and flange part 54。

Retainer portion 53 is tubular, and surrounds axle 20 in the circumferential.Inner peripheral surface in retainer portion 53 The upside bearing 5A and lower side bearing 5B of holding shaft bearing portion 5.That is, retainer portion 53 holding shaft bearing portion 5.

Retainer portion 53 has the rising wood 53a extended from upper end to radially inner side.In rising wood 53a It is provided with at centre at the through through hole portion 53b of above-below direction.Through hole portion 53b is the circle concentric with central axis J Shape.Axle 20 is exposed to the outside of upside motor cover 50 by through hole portion 53b.

Top plate portion 52 extends from the lower end in retainer portion 53 to radial outside.It is fixed that top plate portion 52 covers from upside Son 30.

Magnet retainer portion 51 is tubular, and is circumferentially surrounding stator 30.Magnet retainer portion 51 is from top plate portion 52 Outer rim to downside (-Z side) extend.In the present embodiment, Magnet retainer portion 51 is the most cylindric.? The inner peripheral surface fixed rotor Magnet 40 in Magnet retainer portion 51.That is, Magnet retainer portion 51 keeps rotor magnet 40. Further, Magnet retainer portion 51 is connected to retainer portion 53 by top plate portion 52.

Flange part 54 extends from the lower end in Magnet retainer portion 51 to radial outside.

Lower surface at flange part 54 fixes multiple nut 54b.Nut 54b is pressed-in nut, and from lower face side It is pressed into the hole (omitting diagram) that flange part 54 is arranged.It is screwed moving vane 2 at nut 54b (with reference to figure 1) fixing screw (omitting diagram).

Further, at flange part 54 by screw with external thread 81 fixing downside motor cover 55.

Upside motor cover 50 has the ring-type protuberance 54a prominent from downward side, the outer peripheral edge of flange part 54.Prominent Portion 54a for example, drum.Protuberance 54a be embedded in after paragraph in the downside motor cover 55 that illustrates Groove portion 55b.

Rotor magnet 40 is fixed on the inner peripheral surface in the Magnet retainer portion 51 of upside motor cover 50.In present embodiment In, rotor magnet 40 is the most circular.Rotor magnet 40 is positioned at the radial outside of stator 30, and around central shaft Line J (θ Z-direction) surrounds stator 30, and with stator 30 the most in opposite directions.

Downside motor cover 55 has downside motor cover main body (main part) 56 He for metallic article or resin Cap 59 for resin.Downside motor cover 55 is installed on the downside of the flange part 54 of upside motor cover 50.Downside Motor cover 55 is from downside (-Z side) covering stator 30 and circuit board 60.

Downside motor cover 55 and upside motor cover 50 are as the internal structure covering ceiling fan motor 10 for upper and lower a pair. Ceiling fan motor 10 does not has the cover of independent covering board.Thus, ceiling fan motor 10 is capable of lightweight.

Peripheral part on the surface of the upside (+Z side) of downside motor cover main body 56 arranges porose portion 56a.Hole portion 56a Circumferentially, equally spaced it is provided with multiple.For the external screw thread 81 of tapping screw thread via the flange part of upside motor cover 50 54 are anchored on hole portion 56a.Thus, downside motor cover main body 56 is fixed with upside motor cover 50.

Downside motor cover main body 56 upper surface is provided with ring-type groove portion 55b.Observe from central axis J direction, Groove portion 55b is arranged at the position overlapping with the protuberance 54a of upside motor cover 50.Downside motor cover 55 is installed on During the downside of upside motor cover 50, protuberance 54a embedded groove portion 55b, thus constitute labyrinth seal structure 6.Picture So, labyrinth seal structure 6 is set between upside motor cover 50 and downside motor cover 55.Labyrinth sealing is tied Structure 6 suppresses dust and dust to invade ceiling fan motor by the gap between upside motor cover 50 and downside motor cover 55 The inside of 10.

Central authorities in downside motor cover main body 56 are provided with the most through peristome 57.Peristome 57 is e.g. Circular.Observing from central axis J direction, peristome 57 is arranged at and is installed in the sensor element of circuit board 60 The position of 67 overlaps.

Downside motor cover main body 56 has cylinder portion 57a that is upwardly projecting from the periphery of peristome 57 and that extend.Cylinder portion 57a e.g. drum.Cap 59 is installed at cylinder portion 57a.Thus, even if in downside motor cover main body 56 by gold In the case of belonging to material composition, infrared ray also is able to arrive sensor element 67 through the cap 59 for resin.

Further, in the case of downside motor cover main body 56 is made up of resin material, water owing to arranging at peristome 57 Mouthful, resin material flows in mould equably such that it is able to realize not producing the resin forming of the homogenizing of pore.At figure An example of the position of the cast gate GT of downside motor cover main body 56 is illustrated in 2.Periphery at peristome 57 sets At the inner peripheral surface of the cylinder portion 57a put, cast gate GT is equally spaced configured with multiple.

Cap 59 covers peristome 57.Observing from central axis J direction, cap 59 is arranged at and sensor element 67 weight Folded position.

Cap 59 has the claw 59a extended to upside.End at claw 59a arranges what oriented radial outside highlighted Projection.Claw 59a by insert on the downside of motor cover main body 56 peristome 57 and along cylinder portion 57a inner peripheral surface configure. Thus, the protrusions snap of the end of claw 59a is in the upper end of cylinder portion 57a.Consequently, it is possible to cap 59 is joined by hasp Downside motor cover main body 56 is fixed in conjunction.

In the present embodiment, the color of resin of preferred cap 59 is the color in addition to black.Send out from remote controllers Believe and pass through sensor element 67 and receive that the infrared ray of light cannot easily penetrate the resin of black, metal is known.Due to Making cap 59 is the resin beyond black, and therefore infrared ray can easily penetrate through cap 59 and arrive sensor element 67.In the case of making cap 59 be the resin beyond black, it is possible to make downside motor cover main body 56 for black Resin or metallic article.It addition, downside motor cover main body 56 and cap 59 also are able to by color, material Select and integrated.

Circuit board 60 is arranged at axle 20 and the downside of stator 30.Circuit board 60 is fixed on stator 30.

Circuit board 60 has base main body 61, multiple component 63, turn-sensitive device 64, receives from outside The sensor element 67 of signal.

Base main body 61 look up (XY face view) shape, an example be the square that corner is cut to circular shape Shape.The real estate of base main body 61, i.e. circuit board upper side 60a and circuit board downside 60b and above-below direction (Z Direction of principal axis) intersect.In the present embodiment, the real estate of circuit board 60 is orthogonal with above-below direction.

The stator distribution being provided with through-thickness (Z-direction) through substrate main body 61 at base main body 61 passes through Through-hole section 61e.The shape of looking up of stator distribution through hole portion 61e is not particularly limited, e.g. rectangle.It is fixed to arrange Sub-distribution through hole portion 61e is in situation about being connected with circuit board downside 60b by the winding wire 32a of coil 32 Under make winding wire 32a pass through.

It is provided with through for base main body 61 through-thickness (Z-direction) fixing through at base main body 61 Hole portion 61a.A part for screw with external thread 80 is inserted at fixing through hole portion 61a.Screw with external thread 80 is from circuit The downside (-Z side) of plate 60 is anchored on the portion that the is screwed 33a's of insulating part 33 by fixing through hole portion 61a Internal thread part.Thus, circuit board 60 is fixed on insulating part 33, i.e. stator 30.

Circuit board 60 is by being fixed on stator 30, it is possible to make circuit board 60 configure near stator 30.Thereby, it is possible to Reduce the ceiling fan size of the above-below direction of motor 10.It addition, the turn-sensitive device of circuit board 60 can be made to be installed in 64 with being located proximate to of rotor magnet 40 such that it is able to improve the accuracy of detection of turn-sensitive device 64.

The distribution 8 having electrical connection circuit plate 60 with external power source (omitting diagram) is connected in base main body 61.Distribution 8 from wiring hole portion, the upside 20b of the outer peripheral face 20a being arranged at axle 20 through the inside of axle 20 and from axle 20 End opening is drawn.Then, distribution 8 is connected with the circuit board upper side 60a of the base main body 61 of circuit board 60.Separately Outward, distribution 8 can also through base main body 61 stator distribution through hole portion 61e and with circuit board downside 60b Connect.

Capacitor, inverter and transistor is such as included in multiple components 63.Wherein, capacitor and inverse The element that the height dimension of change device etc. is big is configured at circuit board downside 60b.Side 60a does not has i.e., on circuit boards The element that configuration height size is big, thereby, it is possible to make circuit board 60 configure near stator 30.

Turn-sensitive device 64 detects the positional information of rotating part 4.Side 60a on circuit boards, upper turn-sensitive device 64 underfaces being arranged in rotor magnet 40.Turn-sensitive device 64 e.g. Hall element.

Circuit board 60 has sensor circuit region 66, and sensor circuit region 66 is configured with and receives from outside The sensor element 67 of signal.The underface remaining at least partially within axle 20 in sensor circuit region 66.Due to Circuit board 60 is provided with sensor circuit region 66, therefore need not especially arrange sensor circuit board, it is possible to Reduce the quantity of substrate.Simultaneously, it is not required that the distribution between substrate, it is possible to realize cost and reduce.

Sensor element 67 receives the infrared ray sent from remote controllers, accepts the control from user.Sensor Ultrared reception information in element 67 is transferred to component 63.

In sensor circuit region 66, sensor element 67 is positioned at the circuit board downside 60b of circuit board 60.Further, In the present embodiment, sensor element 67 is positioned at the underface of axle 20, the center of sensor element 67 and axle 20 Central axis J consistent.

Sensor element 67 has sensor element body 67a and pedestal portion 67b.

The light receiving device of sensor element body 67a e.g. receiving infrared-ray.Sensor element body 67a is equipped on platform Seat portion 67b.

Pedestal portion 67b extends to downside from circuit board downside 60b.Pedestal portion 67b keeps sensor element body 67a.Further, the signal of telecommunication between pedestal portion 67b transferring substrates main body 61 and sensor element body 67a.Arrange Pedestal portion 67b is for making sensor element body 67a be positioned at the bottom of motor, thus expands sensor element body The receipts optical range of 67a.

The ceiling fan of present embodiment with motor 10 according to the control information received at sensor element 67 and rotation sensing The signal of device 64, provides to the coil 32 of stator 30 and drives electric current.There is provided to coil 32 when driving electric current and produce magnetic , rotor magnet 40 is rotated around central axis J (± θ Z-direction) by this magnetic field.Thus, rotating part 4 Rotate around central axis J relative to stationary part 3.Consequently, it is possible to the ceiling fan of present embodiment motor 10 obtains rotation Turn driving force.By the ceiling fan rotation of motor 10, the multiple moving vanes 2 being installed on ceiling fan motor 10 rotate, Thus ceiling fan 1 rotates.

The upside motor cover 50 of the ceiling fan motor 10 of present embodiment has retainer portion 53, Magnet keeps Frame portion 51 and flange part 54.Retainer portion 53, Magnet retainer portion 51 and flange part 54 need enough Intensity respectively holding shaft bearing portion 5, rotor magnet 40, moving vane 2.According to present embodiment, owing to making needs The function of intensity concentrates on the upside motor cover 50 into pressing products, it is possible to the function of motor cover 55 on the downside of simplification.By This, can not only simplify the structure of downside motor cover 55, additionally it is possible to be made up of the material of light weight.As a result of which it is, energy Enough lightweights realizing entirety.Further, owing to downside motor cover 55 is by lightweight, upside motor cover 50 and downside horse The mounting structure reaching cover 55 can be easy structure such that it is able to contribute to further lightweight.

Further, at the ceiling fan of present embodiment with in motor 10, stator 30 is fixed on the bottom of axle 20.Further, Circuit board 60 is arranged at axle 20 and the downside of stator 30.Therefore, axle 20 is not prominent from the downward side of stator 30, and And the most through circuit board of axle 20 60.Thus, according to present embodiment, at circuit board 60, need not setting make axle 20 holes passed, therefore, it is possible to guarantee that the installing area of circuit board 60 is bigger.

It addition, because need not arrange the hole making axle 20 pass at circuit board 60, therefore, it is possible to by circuit board 60 Sensor circuit region 66 be configured at the underface of axle 20.By making sensor circuit region 66 be positioned at axle 20 Underface, it is possible to make sensor element 67 be positioned at the central part of ceiling fan motor 10.Thus, it is possible to easily from The either direction of the downside of ceiling fan 1 receives the infrared ray from remote controllers.

The bearing portion 5 of the ceiling fan motor 10 of present embodiment is positioned at the upside of stator 30.Thus, for bearing portion 5 The structure of unilateral supporting stator 30.That is, the downside at stator 30 is not provided with bearing.According to present embodiment, it is possible to The distance making the above-below direction between stator 30 and circuit board 60 reduces further.Thereby, it is possible to make ceiling fan motor The size of the above-below direction of 10 reduces further.

The inner ring 5Aa and the inner ring 5Ba of lower side bearing 5B of the upside bearing 5A of the ceiling fan motor 10 of present embodiment It not fixing relative to axle 20.Further, axle 20 is provided with what restriction bearing portion 5 moved relative to axle 20 Retaining member (back-up ring) 25.Thus, the assembling procedure of axle 20 can be the most logical after axle 20 is inserted bearing portion 5 Cross installation back-up ring 25 can complete.Therefore, according to present embodiment, it is possible to easily carry out that axle 20 is loaded bearing and protect Hold the operation in frame portion 53.

Further, as other example, and bearing portion 5 fixing with bearing portion 5 and retainer portion 53 at axle 20 In the case of unfixed, also function to same effect.In that case, it is possible to bearing portion 5 is being fixed on axle After 20, complete the assembling of axle 20 by bearing portion 5 is inserted retainer portion 53.Like this, group is made The operation of dress axle 20 becomes easy effect and refers to, at Qian He and the retainer of axle 20 and inner ring 5Aa, 5Ba Portion 53 and either one in the Qian He of outer ring 5Ab, 5Bb or two sides are can the situation of matched in clearance of relative movement Under, it is possible to the effect played.About such a example, paragraph later describes in detail as variation 2.

Next as variation 1, based on Fig. 2 to employing with the compression stress compression less than the weight of rotating part 4 The bearing portion 105 of elastomeric element 127 illustrate.It addition, to the composition with the above-mentioned identical pattern of embodiment Key element pays same-sign, and the description thereof will be omitted.

In this variation, elastomeric element 127 is compressed with following compression stress: from rotating part when rotating part 4 stops Less than more than the 10% 90% of the load (that is, the weight of rotating part 4) in 4 directions, downside putting on stationary part 3 Compression stress.In bearing portion 105, the precompressed putting on upside bearing 5A and the precompressed putting on lower side bearing 5B Direction is consistent with each other.The outer ring 5Bb of the outer ring 5Ab and lower side bearing 5B of upside bearing 5A is due to by rotating part 4 Weight effect, therefore side shifting more downward than inner ring 5Aa, 5Ba.Upside bearing 5A is applied and elastomeric element 127 The precompressed of the identical value of compression stress.It addition, the weight applying lower side bearing 5B from rotating part 4 deducts compression stress And the precompressed of the size of the value obtained.As an example, the weight at rotating part 4 is the pressure of 3kgf and elastomer In the case of contracting power is 1kgf, upside bearing 5A is applied the precompressed of 1kgf, lower side bearing 5B is applied 2kgf Precompressed be.It addition, ceiling fan 1 rotates at moving vane 2 thus produces the buoyancy to upside during Lateral supply downwards.Buoyancy When being 0.6kgf, during rotation to upside bearing 5A apply precompressed constant be 1kgf, to lower side bearing 5B apply Precompressed becomes 1.4kgf.Like this, according to this variation, by the weight of rotating part 4 is used in precompressed, and The most balancedly distribution puts on upside bearing 5A and the precompressed of lower side bearing 5B such that it is able to bearing 5A on the upside of raising Life-span with lower side bearing 5B.

In this variation, the outer ring 5Bb of the outer ring 5Ab and lower side bearing 5B of upside bearing 5A can also one Surely retainer portion 53 it is fixed on.That is, outer ring 5Ab, 5Bb with the Qian He in retainer portion 53 can also be Matched in clearance.In this case, outer ring 5Ab, 5Bb can be relative to retainer portion 53 at above-below direction Mobile.Further, the rising wood 53a in retainer portion 53 is as the outer ring 5Ab of bearing 5A on the upside of limiting upward The upper side shifting suppressing portion of movement and play a role.It addition, as shown in the double dot dash line in Fig. 2, preferably under The downside of the outer ring 5Bb of side bearing 5B is arranged on the retaining member 125 that the lower surface of top plate portion 52 is fixed.Anti-delinking part Part 125 is positioned at the lower section of bearing portion 105, and limits axle 20 relative to the downward side shifting of rotating part 4.Thus, anti- De-parts 125 suppress axle 20 to come off to downside from retainer portion 53 together with bearing portion 105.It addition, inciting somebody to action Under the state that axle 20 hangs on ceiling, retaining member 125 not inner ring 5Ba with lower side bearing 5B contacts.

According to this variation, with above-mentioned embodiment equally, being fitting for due to axle 20 and inner ring 5Aa, 5Ba Matched in clearance, bearing portion 105 is the structure that can be manufactured by simple assembling procedure.Further, keep at bearing In the case of frame portion 53 and outer ring 5Ab, 5Bb chimeric is matched in clearance, due to can mounting or dismounting retaining member freely 125, using the teaching of the invention it is possible to provide the ceiling fan 1 of a kind of exchange easily carrying out bearing portion 105.

Fig. 3 is the sectional view of the bearing portion 205 illustrating variation 2.

As variation 2, compared with above-mentioned embodiment, based on Fig. 3 to distance member and the position of elastomeric element Put different bearing portions 205 to illustrate.It addition, the element with the above-mentioned identical pattern of embodiment is paid Same-sign, and the description thereof will be omitted.

Distance member 226 is positioned at inner ring 5Aa and the inner ring 5Ba of lower side bearing 5B each other upper and lower of upside bearing 5A Between direction.

Elastomeric element 227 is positioned at outer ring 5Ab and the outer ring 5Bb of lower side bearing 5B each other upper and lower of upside bearing 5A Between direction.Elastomeric element 227 is compressed with following compression stress: put on from rotating part 4 when rotating part 4 stops The compression stress compression of more than the 120% of the load (that is, the weight of rotating part 4) in the direction, downside of stationary part 3.

In this variation, outer ring 5Ab, 5Bb are matched in clearance with the chimeric in retainer portion 53.Therefore, outward Circle 5Ab, 5Bb can move at above-below direction relative to retainer portion 53.The upper limb in retainer portion 53 Portion 53a is as the outer ring by limiting upside bearing 5A with the upper surface of the outer ring 5Ab of upside bearing 5A Upper side shifting suppressing portion that 5Ab is moved upward and play a role.

The inner ring 5Ba of the inner ring 5Aa and lower side bearing 5B of upside bearing 5A is by being pressed into the outer peripheral face 20a of axle 20 Fixed thus constituted Fixed Division 120g.The first step portion 21 of axle 20 and Fixed Division 120g are as limiting lower side shaft Hold lower side shifting suppressing portion that the inner ring 5Ba of 5B moves downwards and play a role.

Identically with variation 1, the downside at the outer ring 5Bb of lower side bearing 5B is provided with the following table at top plate portion 52 The retaining member 125 that face is fixing.Retaining member 125 is positioned at the lower section of bearing portion 205, and limit axle 20 relative to Rotating part 4 is to the movement of downside.Thus, retaining member 125 suppresses axle 20 to protect from bearing together with bearing portion 205 Hold frame portion 53 to come off to downside.

Bearing portion 205 according to this variation, outer ring 5Ab, 5Bb by elastomeric element 227 with the weight of rotating part 4 Above power diffusion and move to the direction being separated from each other.Thus, upside bearing 5A and lower side bearing 5B is applied phase The most contrary precompressed.Therefore, the bearing portion 205 of this variation 1 will not upward with in lower section either one skew and Keep stable, it is possible to suppression vibration and noise.

Bearing portion 205 according to this variation, between due to the chimeric in retainer portion 53 and outer ring 5Ab, 5Bb being Gap coordinates, it is possible to insert retainer portion 53 at finally carry out outer ring 5Ab, 5Bb of assembling procedure.Therefore, Assembling every parts 226 and elastomeric element 227 becomes easy, can pass through simple assembling procedure as being monolithically fabricated The bearing portion 205 manufactured.

It addition, as variation 2, the situation (120% bigger than the weight of rotating part 4 to the compression stress of elastomeric element 227 Above situation) it is illustrated.But, the compression stress of elastomeric element 227 can also be less than the weight of rotating part 4 (such as, less than more than 10% 90%).In the case of this kind, put on upside bearing 5A precompressed with put on downside The direction of the precompressed of bearing 5B is consistent with each other.Further, in that case, the inner ring 5Aa of upside bearing 5A with under The inner ring 5Ba of side bearing 5B can also be not secured to axle 20 and relatively can move at above-below direction.At inner ring In the case of 5Aa, 5Ba are unfixed with axle 20, as in figure 2 it is shown, by arranging back-up ring 25 as retaining member energy Enough suppression axles 20 come off to downside from bearing portion 205.

Fig. 4 is the sectional view of the bearing portion 305 illustrating variation 3.

As variation 3, compare with the bearing portion 5 of above-mentioned embodiment, the bearing different to the structure of distance member Portion 305 illustrates.It addition, the element with the above-mentioned identical pattern of embodiment is paid identical symbol, And the description thereof will be omitted.

The bearing portion 305 of this variation is provided with elastomeric element as distance member 326.Interval as elastomeric element Parts 326 are uncompressed arranged between the bearing 5A and lower side bearing 5B of upside.Distance member 326 is to have up and down The elastic modelling quantity in direction is the helical spring of more than 2 times of the elastic modelling quantity of the above-below direction of elastomeric element 27.It addition, Elastomeric element 27 with above-mentioned embodiment equally, is held on upside bearing 5A and lower side bearing 5B compressively Between.The compression stress of elastomeric element 27 both can greatly can also be less than the weight of rotating part 4 than the weight of rotating part 4.

Ceiling fan 1, owing to being arranged at ceiling, therefore exists and collides with cleaning device when cleaning and rotating part 4 is applied punching The situation of the load of hitting property.Further, when earthquake occurs, also entirety is applied the load of impact.According to this deformation Example, when rotating part 4 applies the load of impact, distance member 326 produces elastic deformation thus absorbs impact Load.Thus, bearing portion 305 suppresses upside bearing 5A and lower side bearing 5B is applied excessive load, thus Rolling element 5Ac, 5Bc can be suppressed to damage.

It addition, the distance member 326 of this variation also is able in above-mentioned arbitrary variation.

Further, in this variation, although be that helical spring is illustrated with distance member 326, but spacer portion As long as part 326 elastomeric element can not limit its shape.Although it addition, the distance member 326 of this variation is not Configured compressively, but can also be configured with the state of compression.

Above, although illustrate embodiment of the present utility model, but an example of the most each structure and combinations thereof etc. Son, in the range of without departing from purport of the present utility model, it is also possible to carry out the adding of structure, omit, replace and Other change.Further, this utility model is not limited by embodiment.

Such as, in embodiment and variation thereof, although Magnet retainer portion 51 and retainer portion 53 are all A part for upside motor cover 50, but as long as they are connected with each other can also be split parts.

Claims (10)

1. a ceiling fan motor, including:

Stationary part；

Rotating part, it rotates relative to described stationary part；And

Bearing portion, its by described rotating part support for can rotate relative to described stationary part,

Described stationary part has:

Axle, it is centered by vertically extending central axis；And

Stator, it is fixed on described axle,

Described rotating part has:

Rotor magnet, it is positioned at the radial outside of described stator；

The Magnet retainer portion of tubular, it keeps described rotor magnet；And

The retainer portion of tubular, it is connected with described Magnet retainer portion and keeps described bearing portion,

Described bearing portion has:

Upside bearing and lower side bearing, they arrange at above-below direction；And

Distance member and elastomeric element, they are between the above-below direction of described upside bearing and described lower side bearing,

Described ceiling fan motor is characterised by,

Described retainer portion has upper side shifting suppressing portion, its suppress described upside bearing outer ring upward It is mobile,

Described axle has lower side shifting suppressing portion, the movement downwards of the inner ring of its described lower side bearing of suppression,

Either one in described distance member and described elastomeric element is positioned at the inner ring of described upside bearing and described downside Between the inner ring of bearing above-below direction each other, the opposing party in described distance member and described elastomeric element is positioned at described Between the outer ring of upside bearing and the outer ring of described lower side bearing above-below direction each other,

The inner ring of described upside bearing and the inner ring of described lower side bearing and the Qian He of described axle and described upside bearing Outer ring and the outer ring of described lower side bearing and the Qian He in described retainer portion in either one or two sides be energy The matched in clearance of enough relative movements,

Retaining member is positioned at the either above or below of described bearing portion, and described retaining member limits described axle relative to described The movement to downside of rotating part.

Ceiling fan motor the most according to claim 1, it is characterised in that

Described distance member is positioned at the outer ring of the outer ring of described upside bearing and described lower side bearing above-below direction each other Between,

Described elastomeric element is positioned at the inner ring of the inner ring of described upside bearing and described lower side bearing above-below direction each other Between.

Ceiling fan motor the most according to claim 2, it is characterised in that

Described retainer portion is fixed in the outer ring of described upside bearing and the outer ring of described lower side bearing.

Ceiling fan motor the most according to claim 1, it is characterised in that

Described distance member is positioned at the inner ring of the inner ring of described upside bearing and described lower side bearing above-below direction each other Between,

Described elastomeric element is positioned at the outer ring of the outer ring of described upside bearing and described lower side bearing above-below direction each other Between.

Ceiling fan motor the most according to claim 4, it is characterised in that

Inner ring and the described downside bearing inner race of described upside bearing are fixed on described axle.

6. according to the ceiling fan motor described in any one in claim 1 to 5, it is characterised in that

Described elastomeric element is compressed with following compression stress: described rotating part puts on institute from described rotating part when stopping State the direction, downside of stationary part load more than 120% compression stress.

7. according to the ceiling fan motor described in any one in claim 1 to 5, it is characterised in that

The size of the above-below direction of described distance member is the size of the above-below direction of described upside bearing and described downside More than half of the summation of the size of the above-below direction of bearing.

8. according to the ceiling fan motor described in any one in claim 1 to 5, it is characterised in that

The elastic modelling quantity of the above-below direction that described distance member has is the springform of the above-below direction of described elastomeric element More than the twice of amount.

9. according to the ceiling fan motor described in any one in claim 1 to 5, it is characterised in that

Described elastomeric element is compressed by the compression stress of less than more than 10% 90% of the weight with described rotating part.

10. a ceiling fan, it is characterised in that have:

Ceiling fan motor described in any one in claim 1 to 9；And

Multiple moving vanes, they are radially fixed on described rotating part.