US20130164127A1 - Fan structure and a bearing module thereof - Google Patents
Fan structure and a bearing module thereof Download PDFInfo
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- US20130164127A1 US20130164127A1 US13/336,874 US201113336874A US2013164127A1 US 20130164127 A1 US20130164127 A1 US 20130164127A1 US 201113336874 A US201113336874 A US 201113336874A US 2013164127 A1 US2013164127 A1 US 2013164127A1
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- Prior art keywords
- blocking
- limiting
- fan structure
- bearing
- accordance
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
- F04D25/062—Details of the bearings
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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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/057—Bearings hydrostatic; hydrodynamic
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
Definitions
- the present invention is generally relating to a fan structure and a bearing module, more particularly to the bearing module having a bearing, a limiting member and a blocking member to prevent the rotor from falling off in the fan structure.
- a conventional heat-dissipation fan 10 as illustrated in FIG. 14 includes a base 11 , a bearing 12 , a rotor 13 and a stator 14 .
- the base 11 comprises an axial tube 15
- the bearing 12 is disposed within the axial tube 15 .
- the rotor 13 comprises a rotating shaft 16 penetrated through an axial hole 17 of the bearing 12 , and one end of the rotating shaft 16 is limited by the limiting member 18 .
- the limiting member 18 may be likely deformed while installing mentioned limiting member 18 into the axial tube 15 .
- one end of the rotating shaft 16 can not couple with the limiting member 18 smoothly, a frictional noise of the rotor 13 might occur in the situation of rotation, and even more the rotor 13 might depart from the stator 14 to lead fan malfunction.
- the structure of the limiting member 18 might be broken at the time of taking apart the fan 10 . Therefore, we have no idea in whether source of friction noise has connection with unauthentic assembly of the limiting member 18 . Besides, the broken fan 10 is incapable to be remade.
- the primary object of the present invention is to provide a fan structure comprising a base, a bearing module and a rotor, wherein the base comprises a coupling hole.
- the bearing module is disposed at the coupling hole and includes a hollow cylinder body, a bearing, a blocking member and a limiting member.
- the hollow cylinder body is at least composed of a ring wall and an accommodating hole surrounded by the ring wall, wherein the ring wall has an outer ring wall, an inner ring wall and a limiting slot recessed from the inner ring wall.
- the bearing is disposed at the accommodating hole and comprises a top surface, a bottom surface and an axial hole.
- the blocking member is disposed at the limiting slot and located on top of the bearing, an accommodating space is formed between the blocking member and the bearing, the blocking member has a body portion and a blocking portion extendedly formed at the body portion, wherein the body portion is embedded into the limiting slot, the blocking portion is protruded to the inner ring wall of the ring wall and located at the accommodating hole.
- the limiting member is disposed at the accommodating space and comprises a body, a plurality of limiting plates extendedly formed at inside of the body, a plurality of penetrating slots and a penetrating hole is in communication with the penetrating slots, each of the penetrating slots is located between adjacent limiting plates, the limiting member includes a front end portion, and the blocking portion of the blocking member is provided for contacting against the limiting member.
- the rotor includes a rotating shaft having a ring slot, the rotating shaft is penetrated through the penetration hole of the limiting member and the axial hole of the bearing, and the front end portion of each of the limiting plates is inserted into the ring slot.
- FIG. 1 is a perspective exploded view illustrating a fan structure in accordance with a first embodiment of the present invention.
- FIG. 2 is a perspective exploded view illustrating a bearing module in accordance with the present invention.
- FIG. 3 is a lateral section view illustrating a bearing module in accordance with the present invention.
- FIG. 4 is a schematic diagram illustrating a blocking member in accordance with the present invention.
- FIG. 4A is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention.
- FIG. 4B is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention.
- FIG. 4C is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention.
- FIG. 5 is a schematic diagram illustrating a limiting member in accordance with the present invention.
- FIG. 6 is a section view along line A-A in FIG. 3 .
- FIG. 7 is a top view illustrating a fan structure in accordance with the present invention.
- FIG. 8 is a section view along line B-B in FIG. 7 .
- FIG. 9 is a section view along line C-C in FIG. 7 .
- FIG. 10 is a section view illustrating a fan structure in accordance with a second embodiment of the present invention.
- FIG. 11 is a section view illustrating a bearing module in accordance with a second embodiment of the present invention.
- FIG. 12 is a section view illustrating a fan structure in accordance with a third embodiment of the present invention.
- FIG. 13 is a section view illustrating a bearing module in accordance with a third embodiment of the present invention.
- FIG. 14 is a section view of a conventional heat-dissipation fan.
- a fan structure 100 in accordance with a first embodiment of the present invention includes a casing 110 , a bearing module 120 , a rotor 130 and a stator 140 , wherein the casing 110 includes a base 111 having a coupling hole 112 .
- the bearing module 120 is disposed at the coupling hole 112 and includes a hollow cylinder body 121 , a bearing 122 , a blocking member 123 , a limiting member 124 , a gasket 125 and a mat 126 .
- the hollow cylinder body 121 is composed of a ring wall 121 a, a bottom portion 121 b in connection with the bottom of the ring wall 121 a and an accommodating hole 121 c surrounded by the ring wall 121 a .
- the mat 126 , the bearing 122 , the gasket 125 , the limiting member 124 and the blocking member 123 are disposed at the accommodating hole 121 c in sequence.
- the ring wall 121 a of the hollow cylinder body 121 comprises an outer ring wall 121 d , an inner ring wall 121 e, and a limiting slot 121 f recessed from the inner ring wall 121 e , wherein the limiting slot 121 f further comprises an inner wall 121 g.
- the bearing 122 comprises a top surface 122 a, a bottom surface 122 b, an oil guiding slot 122 c in connection with the top surface 122 a and the bottom surface 122 b and an axial hole 122 d.
- the blocking member 123 is disposed at the limiting slot 121 f and located on top of the bearing 122 , and an accommodating space S is formed between the blocking member 123 and the bearing 122 .
- the blocking member 123 can be a C-shape retaining ring, mentioned blocking member 123 comprises a body portion 123 a, a blocking portion 123 b extendedly formed at the body portion 123 a, and an outer wall 123 c .
- the body portion 123 a of the blocking member 123 is embedded into the limiting slot 121 f, the blocking portion 123 b of the blocking member 123 is protruded to the inner ring wall 121 e of the ring wall 121 a and located at the accommodating hole 121 c, and the outer wall 123 c of the blocking member 123 is in contact against the inner wall 121 g of the limiting slot 121 f.
- the blocking portion 123 b includes a first leaning portion 123 d , a second leaning portion 123 e and a third leaning portion 123 f, wherein the first leaning portion 123 d and the third leaning portion 123 f can be two terminals of the C-shape retaining ring.
- a blocking area Al is composed of the first leaning portion 123 d and the second leaning portion 123 e.
- a blocking area A 2 is composed of a first leaning portion 123 d, a second leaning portion 123 e and a third leaning portion 123 f.
- a blocking area A 3 is composed of the first leaning portion 123 d and the third leaning portion 123 f.
- the limiting member 124 is disposed at the accommodating space S and comprises a body 124 a, a plurality of limiting plates 124 b extendedly formed at inside of the body 124 a, a plurality of penetrating slots 124 c and a penetrating hole 124 d in communication with the penetrating slots 124 c, wherein each of the penetrating slots 124 c is located between adjacent limiting plates 124 b and includes a front end portion 124 e.
- the blocking portion 123 b of the blocking member 123 is provided for contacting against the limiting member 124 , referring to FIGS.
- the first leaning portion 123 d is provided for contacting against the limiting plate 124 b of the limiting member 124
- the second leaning portion 123 e is provided for contacting against the body 124 a of the limiting member 124
- the third leaning portion 123 f is provided for contacting against the limiting plate 124 b of the limiting member 124
- the first leaning portion 123 d and the third leaning portion 123 f are provided for contacting against the body 124 a and the limiting plate 124 b of the limiting member 124 .
- the gasket 125 is disposed between the limiting member 124 and the bearing 122 , and the gasket 125 is provided for mentioned limiting member 124 to dispose thereon.
- An accommodating space B is formed between an internal wall 125 a of the gasket 125 and the top surface 122 a of the bearing 122 , wherein the limiting plate 124 b of the limiting member 124 is located on top of the accommodating space B.
- the accommodating space B offers the limiting plate 124 b of the limiting member 124 a sufficient deformed space while the rotating shaft 131 passing through the penetrating hole 124 d of the limiting member 124 so as to prevent the limiting plate 124 b from being incapable of accomplishing the restoration.
- the limiting member 124 is clipped by the blocking member 123 and the gasket 125 to increase mechanical stress of the limiting member 124 therefore avoiding deformation.
- an opening 123 g is formed between the first leaning portion 123 d and the third leaning portion 123 f, when the blocking member 123 passes through the accommodating hole 121 c of the hollow cylinder body 121 , the body portion 123 a is limited by the inner ring wall 121 e of the accommodating hole 121 c.
- the first leaning portion 123 d and the third leaning portion 123 f may move toward the opening 123 g, when the blocking member 123 reaches to the limiting slot 121 f, the first leaning portion 123 d and the third leaning portion 123 f restore to their original position respectively, and the body portion 123 a of the blocking member 123 is embedded into the limiting slot 121 f. Owing to the flexible blocking member 123 , the inner ring wall 121 e of the accommodating hole 121 c will not be damaged while assembling or disassembling the blocking member 123 .
- the accommodating hole 121 c comprises a hole diameter D 1
- the limiting member 124 comprises an outer diameter D 2
- the blocking member 123 comprises a maximum width D 3
- the outer diameter D 2 is smaller than the maximum width D 3 so as to make the blocking member 123 advantageous to press the limiting member 124 .
- the rotor 130 is coupled with the casing 110 and includes a rotating shaft 131 penetrated into the bearing module 120 , wherein the rotating shaft 131 comprises a ring slot 132 and is penetrated through the penetration hole 124 d of the limiting member 124 and the axial hole 122 d of the bearing 122 .
- the front end portion 124 e of each of the limiting plates 124 b is inserted into the ring slot 132 of the rotating shaft 131 , and the terminal of the rotating shaft 131 is in contact against the mat 126 .
- the stator 140 is coupled with the outer ring wall 121 d of the hollow cylinder body 121 .
- the rotating shaft 131 when the rotating shaft 131 is inserted into the bearing module 120 , the rotating shaft 131 first passes through the blocking areas Al, A 2 or A 3 of the blocking member 123 , thereafter, the rotating shaft 131 penetrates through the penetration hole 124 d of the limiting member 124 and the axial hole 122 d of the bearing 122 .
- the rotating shaft 131 locates at the blocking areas A 1 , A 2 or A 3 .
- the blocking areas A 1 , A 2 or A 3 are composed of the first leaning portion 123 d, the second leaning portion 123 e and the third leaning portion 123 f
- the mechanical stress of each of the limiting plates 124 b can be increased to prevent each of the limiting plates 124 b from deformation.
- the rotor 130 can not be limited by the limiting plates 124 b therefore falling off from the bearing module 120 .
- the press force applied to the limiting member 124 via the blocking member 123 can be raised to prevent the rotating shaft 131 to fall off from each of the limiting plates 124 b.
- a fan structure 100 includes a casing 110 , a bearing module 120 , a rotor 130 and a stator 140 , the difference between the first embodiment and the second embodiment is that a recess 122 e is recessed from the top surface 122 a of the bearing 122 , the limiting member 124 is disposed at the top surface 122 a of the bearing 122 , and the limiting plate 124 b of the limiting member 124 is located on top of the recess 122 e .
- the recess 122 e offers the limiting plate 124 b of the limiting member 124 a sufficient deformed space.
- a fan structure 100 includes a casing 110 , a bearing module 120 , a rotor 130 and a stator 140 , the difference between the second embodiment and the third embodiment is that the inner ring wall 121 e of the hollow cylinder body 121 is formed into a ladder shape, mentioned inner ring wall 121 e comprises a top wall portion 121 h and bottom wall portion 121 i, and the limiting slot 121 f is recessed from the top wall portion 121 h .
- the bearing 122 will not compress the top wall portion 121 h while passing through the top wall portion 121 h to prevent the hollow cylinder body 121 from deformation.
Abstract
A fan structure at least includes a bearing module and a rotor, the bearing module includes a hollow cylinder body, a bearing, a limiting member and a blocking member. The hollow cylinder body comprises a ring wall and an accommodating hole, wherein the bearing, the limiting member and the blocking member are disposed at the accommodating hole in sequence. The ring wall comprises an inner ring wall and a limiting slot recessed from the inner ring wall. The blocking member comprises a body portion and a blocking portion extendedly formed at the body portion, the body portion embedded into the limiting slot, and the blocking portion is in contact against the limiting member. A rotating shaft of the rotor penetrated through the limiting member and the bearing, and a plurality limiting plates of the limiting member inserted into a ring slot of the rotating shaft.
Description
- The present invention is generally relating to a fan structure and a bearing module, more particularly to the bearing module having a bearing, a limiting member and a blocking member to prevent the rotor from falling off in the fan structure.
- A conventional heat-
dissipation fan 10 as illustrated inFIG. 14 includes abase 11, abearing 12, arotor 13 and astator 14. Thebase 11 comprises anaxial tube 15, and thebearing 12 is disposed within theaxial tube 15. Therotor 13 comprises a rotatingshaft 16 penetrated through anaxial hole 17 of thebearing 12, and one end of the rotatingshaft 16 is limited by thelimiting member 18. However, owing to the reason that thelimiting member 18 is located between the bottom of theaxial tube 15 and thebearing 12, thelimiting member 18 may be likely deformed while installing mentioned limitingmember 18 into theaxial tube 15. Accordingly, one end of the rotatingshaft 16 can not couple with the limitingmember 18 smoothly, a frictional noise of therotor 13 might occur in the situation of rotation, and even more therotor 13 might depart from thestator 14 to lead fan malfunction. In addition, when the assembly of thefan 10 completes, once a frictional noise occurred, the structure of thelimiting member 18 might be broken at the time of taking apart thefan 10. Therefore, we have no idea in whether source of friction noise has connection with unauthentic assembly of thelimiting member 18. Besides, thebroken fan 10 is incapable to be remade. - The primary object of the present invention is to provide a fan structure comprising a base, a bearing module and a rotor, wherein the base comprises a coupling hole. The bearing module is disposed at the coupling hole and includes a hollow cylinder body, a bearing, a blocking member and a limiting member. The hollow cylinder body is at least composed of a ring wall and an accommodating hole surrounded by the ring wall, wherein the ring wall has an outer ring wall, an inner ring wall and a limiting slot recessed from the inner ring wall. The bearing is disposed at the accommodating hole and comprises a top surface, a bottom surface and an axial hole. The blocking member is disposed at the limiting slot and located on top of the bearing, an accommodating space is formed between the blocking member and the bearing, the blocking member has a body portion and a blocking portion extendedly formed at the body portion, wherein the body portion is embedded into the limiting slot, the blocking portion is protruded to the inner ring wall of the ring wall and located at the accommodating hole. The limiting member is disposed at the accommodating space and comprises a body, a plurality of limiting plates extendedly formed at inside of the body, a plurality of penetrating slots and a penetrating hole is in communication with the penetrating slots, each of the penetrating slots is located between adjacent limiting plates, the limiting member includes a front end portion, and the blocking portion of the blocking member is provided for contacting against the limiting member. The rotor includes a rotating shaft having a ring slot, the rotating shaft is penetrated through the penetration hole of the limiting member and the axial hole of the bearing, and the front end portion of each of the limiting plates is inserted into the ring slot. For the first reason that the front end portion of each of the limiting plates is inserted into the ring slot of the rotating shaft, the second reason that the body portion of the blocking member is embedded into the limiting slot, the third reason that the blocking portion is in contact with the limiting member, therefore, which may prevent the rotating shaft of the rotor to depart from the bearing module.
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FIG. 1 is a perspective exploded view illustrating a fan structure in accordance with a first embodiment of the present invention. -
FIG. 2 is a perspective exploded view illustrating a bearing module in accordance with the present invention. -
FIG. 3 is a lateral section view illustrating a bearing module in accordance with the present invention. -
FIG. 4 is a schematic diagram illustrating a blocking member in accordance with the present invention. -
FIG. 4A is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention. -
FIG. 4B is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention. -
FIG. 4C is a schematic diagram illustrating a blocking area of the blocking member in accordance with the present invention. -
FIG. 5 is a schematic diagram illustrating a limiting member in accordance with the present invention. -
FIG. 6 is a section view along line A-A inFIG. 3 . -
FIG. 7 is a top view illustrating a fan structure in accordance with the present invention. -
FIG. 8 is a section view along line B-B inFIG. 7 . -
FIG. 9 is a section view along line C-C inFIG. 7 . -
FIG. 10 is a section view illustrating a fan structure in accordance with a second embodiment of the present invention. -
FIG. 11 is a section view illustrating a bearing module in accordance with a second embodiment of the present invention. -
FIG. 12 is a section view illustrating a fan structure in accordance with a third embodiment of the present invention. -
FIG. 13 is a section view illustrating a bearing module in accordance with a third embodiment of the present invention. -
FIG. 14 is a section view of a conventional heat-dissipation fan. - Referring to
FIGS. 1 , 2 and 3, afan structure 100 in accordance with a first embodiment of the present invention includes acasing 110, abearing module 120, arotor 130 and astator 140, wherein thecasing 110 includes abase 111 having acoupling hole 112. - With reference to
FIGS. 2 and 3 , thebearing module 120 is disposed at thecoupling hole 112 and includes ahollow cylinder body 121, abearing 122, a blockingmember 123, a limitingmember 124, agasket 125 and amat 126. Thehollow cylinder body 121 is composed of aring wall 121 a, abottom portion 121 b in connection with the bottom of thering wall 121 a and anaccommodating hole 121 c surrounded by thering wall 121 a. In this embodiment, themat 126, thebearing 122, thegasket 125, thelimiting member 124 and the blockingmember 123 are disposed at theaccommodating hole 121 c in sequence. Thering wall 121 a of thehollow cylinder body 121 comprises anouter ring wall 121 d, aninner ring wall 121 e, and alimiting slot 121 f recessed from theinner ring wall 121 e, wherein thelimiting slot 121 f further comprises aninner wall 121 g. Thebearing 122 comprises atop surface 122 a, abottom surface 122 b, an oil guidingslot 122 c in connection with thetop surface 122 a and thebottom surface 122 b and anaxial hole 122 d. The blockingmember 123 is disposed at thelimiting slot 121 f and located on top of thebearing 122, and an accommodating space S is formed between the blockingmember 123 and thebearing 122. Please referring toFIGS. 3 , 4, 4A-4C, in this embodiment, the blockingmember 123 can be a C-shape retaining ring, mentioned blockingmember 123 comprises abody portion 123 a, a blockingportion 123 b extendedly formed at thebody portion 123 a, and anouter wall 123 c. With reference toFIG. 3 again, thebody portion 123 a of the blockingmember 123 is embedded into thelimiting slot 121 f, theblocking portion 123 b of the blockingmember 123 is protruded to theinner ring wall 121 e of thering wall 121 a and located at theaccommodating hole 121 c, and theouter wall 123 c of the blockingmember 123 is in contact against theinner wall 121 g of thelimiting slot 121 f. Referring to FIGS. 4 and 4A-4C, in this embodiment, theblocking portion 123 b includes afirst leaning portion 123 d, asecond leaning portion 123 e and athird leaning portion 123 f, wherein thefirst leaning portion 123 d and thethird leaning portion 123 f can be two terminals of the C-shape retaining ring. With reference toFIG. 4A , a blocking area Al is composed of thefirst leaning portion 123 d and thesecond leaning portion 123 e. With reference toFIG. 4B , a blocking area A2 is composed of afirst leaning portion 123 d, asecond leaning portion 123 e and athird leaning portion 123 f. With reference toFIG. 4C , a blocking area A3 is composed of thefirst leaning portion 123 d and the third leaningportion 123 f. - Referring to
FIGS. 3 , 5 and 8, thelimiting member 124 is disposed at the accommodating space S and comprises abody 124 a, a plurality oflimiting plates 124 b extendedly formed at inside of thebody 124 a, a plurality of penetratingslots 124 c and a penetratinghole 124 d in communication with thepenetrating slots 124 c, wherein each of the penetratingslots 124 c is located between adjacentlimiting plates 124 b and includes afront end portion 124 e. The blockingportion 123 b of the blockingmember 123 is provided for contacting against the limitingmember 124, referring toFIGS. 3 , 5 and 6, thefirst leaning portion 123 d is provided for contacting against thelimiting plate 124 b of the limitingmember 124, thesecond leaning portion 123 e is provided for contacting against thebody 124 a of the limitingmember 124, and thethird leaning portion 123 f is provided for contacting against thelimiting plate 124 b of thelimiting member 124. Or in another embodiment, thefirst leaning portion 123 d and thethird leaning portion 123 f are provided for contacting against thebody 124 a and thelimiting plate 124 b of thelimiting member 124. Referring toFIG. 3 again, thegasket 125 is disposed between thelimiting member 124 and thebearing 122, and thegasket 125 is provided for mentioned limitingmember 124 to dispose thereon. An accommodating space B is formed between aninternal wall 125 a of thegasket 125 and thetop surface 122 a of thebearing 122, wherein thelimiting plate 124 b of thelimiting member 124 is located on top of the accommodating space B. The accommodating space B offers thelimiting plate 124 b of thelimiting member 124 a sufficient deformed space while the rotatingshaft 131 passing through thepenetrating hole 124 d of thelimiting member 124 so as to prevent thelimiting plate 124 b from being incapable of accomplishing the restoration. Preferably, thelimiting member 124 is clipped by the blockingmember 123 and thegasket 125 to increase mechanical stress of the limitingmember 124 therefore avoiding deformation. Please refers toFIGS. 3 , 4 and 6, an opening 123 g is formed between the first leaningportion 123 d and the third leaningportion 123 f, when the blockingmember 123 passes through theaccommodating hole 121 c of thehollow cylinder body 121, thebody portion 123 a is limited by theinner ring wall 121 e of theaccommodating hole 121 c. Therefore, through applying an external force, the first leaningportion 123 d and the third leaningportion 123 f may move toward the opening 123 g, when the blockingmember 123 reaches to the limitingslot 121 f, the first leaningportion 123 d and the third leaningportion 123 f restore to their original position respectively, and thebody portion 123 a of the blockingmember 123 is embedded into the limitingslot 121 f. Owing to theflexible blocking member 123, theinner ring wall 121 e of theaccommodating hole 121 c will not be damaged while assembling or disassembling the blockingmember 123. Besides, after taking apart the blockingmember 123, therotor 130 and the limitingmember 124 can be taken out without destroying the structure of the limitingmember 124. Therefore, mentioned feature is beneficial for thefan structure 100 to be remade. In this embodiment, theaccommodating hole 121 c comprises a hole diameter D1, the limitingmember 124 comprises an outer diameter D2, for the reason that the outer diameter D2 is smaller than the hole diameter D1, the limitingmember 124 may be simply disposed in theaccommodating hole 121 c. With reference toFIGS. 3 , 4 and 6, in this embodiment, the blockingmember 123 comprises a maximum width D3, and the outer diameter D2 is smaller than the maximum width D3 so as to make the blockingmember 123 advantageous to press the limitingmember 124. - Referring to
FIGS. 1 , 7, 8 and 9, therotor 130 is coupled with thecasing 110 and includes arotating shaft 131 penetrated into thebearing module 120, wherein therotating shaft 131 comprises aring slot 132 and is penetrated through thepenetration hole 124 d of the limitingmember 124 and theaxial hole 122 d of thebearing 122. Thefront end portion 124 e of each of the limitingplates 124 b is inserted into thering slot 132 of therotating shaft 131, and the terminal of therotating shaft 131 is in contact against themat 126. - The
stator 140 is coupled with theouter ring wall 121 d of thehollow cylinder body 121. - With reference to
FIGS. 4A , 4B, 4C, 6, 8 and 9, when therotating shaft 131 is inserted into thebearing module 120, therotating shaft 131 first passes through the blocking areas Al, A2 or A3 of the blockingmember 123, thereafter, therotating shaft 131 penetrates through thepenetration hole 124 d of the limitingmember 124 and theaxial hole 122 d of thebearing 122. In addition, when thefront end portion 124 e of each of the limitingplates 124 b is inserted into thering slot 132 of therotating shaft 131, therotating shaft 131 locates at the blocking areas A1, A2 or A3. - Referring to
FIGS. 4A , 4B, 4C, 6, 8 and 9 again, when therotor 130 is applied by an external force, for the first reason that thefront end portion 124 e of each of the limitingplates 124 b is inserted into thering slot 132 of therotating shaft 131, the second reason that thebody portion 123 a of the blockingmember 123 is embedded into the limitingslot 121 f of thehollow cylinder body 121, the third reason that the first leaningportion 123 d, the second leaningportion 123 e and the third leaningportion 123 f of the blockingportion 123 b are in contact with the limitingmember 124, which may prevent therotating shaft 131 of therotor 130 to depart from thebearing module 120. Besides, owing to the blocking areas A1, A2 or A3 are composed of the first leaningportion 123 d, the second leaningportion 123 e and the third leaningportion 123 f, when the first leaningportion 123 d, the second leaningportion 123 e and the third leaningportion 123 f are in contact and press the limitingmember 124, the mechanical stress of each of the limitingplates 124 b can be increased to prevent each of the limitingplates 124 b from deformation. Once each of the limitingplates 124 b is in severely deformed, therotor 130 can not be limited by the limitingplates 124 b therefore falling off from thebearing module 120. Furthermore, for the reason that therotating shaft 131 of therotor 130 is located at the blocking areas A1, A2 or A3, the press force applied to the limitingmember 124 via the blockingmember 123 can be raised to prevent therotating shaft 131 to fall off from each of the limitingplates 124 b. - Referring to
FIGS. 10 and 11 , which illustrate a second embodiment of the present invention, afan structure 100 includes acasing 110, abearing module 120, arotor 130 and astator 140, the difference between the first embodiment and the second embodiment is that arecess 122 e is recessed from thetop surface 122 a of thebearing 122, the limitingmember 124 is disposed at thetop surface 122 a of thebearing 122, and the limitingplate 124 b of the limitingmember 124 is located on top of therecess 122 e. When therotating shaft 131 passes through thepenetration hole 124 d of the limitingmember 124, therecess 122 e offers the limitingplate 124 b of the limitingmember 124 a sufficient deformed space. - Referring to
FIGS. 12 and 13 , which illustrate a third embodiment of the present invention, afan structure 100 includes acasing 110, abearing module 120, arotor 130 and astator 140, the difference between the second embodiment and the third embodiment is that theinner ring wall 121 e of thehollow cylinder body 121 is formed into a ladder shape, mentionedinner ring wall 121 e comprises atop wall portion 121 h andbottom wall portion 121 i, and the limitingslot 121 f is recessed from thetop wall portion 121 h. Thebearing 122 will not compress thetop wall portion 121 h while passing through thetop wall portion 121 h to prevent thehollow cylinder body 121 from deformation. - While this invention has been particularly illustrated and described in detail with respect to the preferred embodiments thereof, it will be clearly understood by those skilled in the art that it is not limited to the specific features and describes and various modifications and changes in form and details may be made without departing from the spirit and scope of this invention.
Claims (20)
1. A fan structure comprising:
a base having a coupling hole;
a bearing module disposed at the coupling hole comprising:
a hollow cylinder body at least composed of a ring wall and an accommodating hole surrounded by the ring wall, wherein the ring wall having an outer ring wall, an inner ring wall and a limiting slot recessed from the inner ring wall;
a bearing disposed at the accommodating hole and comprised a top surface, a bottom surface and an axial hole;
a blocking member disposed at the limiting slot and located on top of the bearing, an accommodating space formed between the blocking member and the bearing, the blocking member having a body portion and a blocking portion extendedly formed at the body portion, wherein the body portion embedded into the limiting slot, the blocking portion protruded to the inner ring wall of the ring wall and located at the accommodating hole; and
a limiting member disposed at the accommodating space and comprised a body, a plurality of limiting plates extendedly formed at inside of the body, a plurality of penetrating slots and a penetrating hole in communication with the penetrating slots, each of the penetrating slots located between adjacent limiting plates, the limiting member includes a front end portion, the blocking portion of the blocking member is provided for contacting against the limiting member; and
a rotor includes a rotating shaft having a ring slot, the rotating shaft penetrated through the penetration hole of the limiting member and the axial hole of the bearing, and the front end portion of each of the limiting plates inserted into the ring slot.
2. The fan structure in accordance with claim 1 , wherein the blocking portion includes a first leaning portion provided for contacting against the limiting plate of the limiting member.
3. The fan structure in accordance with claim 2 , wherein the blocking portion further includes a second leaning portion provided for contacting against the body of the limiting member, a blocking area is composed of the first leaning portion and the second leaning portion.
4. The fan structure in accordance with claim 3 , wherein the blocking portion further includes a third leaning portion provided for contacting against the limiting plate and the body of the limiting member, a blocking area is composed of the first leaning portion, the second leaning portion and the third leaning portion.
5. The fan structure in accordance with claim 2 , wherein the blocking portion further includes a third leaning portion provided for contacting against the limiting plate of the limiting member, a blocking area is composed of the first leaning portion and the third leaning portion.
6. The fan structure in accordance with claim 1 further includes a gasket disposed between the limiting member and the bearing, and the gasket is provided for the limiting member to dispose thereon.
7. The fan structure in accordance with claim 6 , wherein the limiting member is clipped by the blocking member and the gasket.
8. The fan structure in accordance with claim 1 , wherein the limiting slot comprises an inner wall, the blocking member comprises an outer wall contacted against the inner wall.
9. The fan structure in accordance with claim 1 , wherein the accommodating hole comprises a hole diameter, the limiting member comprises an outer diameter smaller than the hole diameter.
10. The fan structure in accordance with claim 1 , wherein the blocking member comprises a maximum width, the limiting member comprises an outer diameter smaller than the maximum width.
11. A bearing module of a fan structure comprising:
a hollow cylinder body at least composed of a ring wall and an accommodating hole surrounded by the ring wall, wherein the ring wall having an outer ring wall, an inner ring wall and a limiting slot recessed from the inner ring wall;
a bearing disposed at the accommodating hole and comprised a top surface, a bottom surface and an axial hole;
a blocking member disposed at the limiting slot and located on top of the bearing, an accommodating space formed between the blocking member and the bearing, the blocking member having a body portion and a blocking portion extendedly formed at the body portion, wherein the body portion embedded into the limiting slot, the blocking portion protruded to the inner ring wall of the ring wall and located at the accommodated hole; and
a limiting member disposed at the accommodating space and comprised a body, a plurality of limiting plates extendedly formed at inside of the body, a plurality of penetrating slots and a penetrating hole in communication with the penetrating slots, each of the penetrating slots located between adjacent limiting plates, the limiting plate includes a front end portion, and the blocking portion of the blocking member is provided for contacting against the limiting member.
12. The bearing module of a fan structure in accordance with claim 11 , wherein the blocking portion includes a first leaning portion provided for contacting against the limiting plate of the limiting member.
13. The bearing module of a fan structure in accordance with claim 12 , wherein the blocking portion further includes a second leaning portion provided for contacting against the body of the limiting member, a blocking area is composed of the first leaning portion and the second leaning portion.
14. The bearing module of a fan structure in accordance with claim 13 , wherein the blocking portion further includes a third leaning portion provided for contacting against the limiting plate and the body, a blocking area is composed of the first leaning portion, the second leaning portion and the third leaning portion.
15. The bearing module of a fan structure in accordance with claim 12 , the blocking portion further includes a third leaning portion provided for contacting against the limiting plate of the limiting member, a blocking area is composed of the first leaning portion and the third leaning portion.
16. The bearing module of a fan structure in accordance with claim 11 further includes a gasket disposed between the limiting member and the bearing, and the gasket is provided for the limiting member to dispose thereon.
17. The bearing module of a fan structure in accordance with claim 16 , wherein the limiting member is clipped by the blocking member and the gasket.
18. The bearing module of a fan structure in accordance with claim 11 , wherein the limiting slot comprises an inner wall, the blocking member comprises an outer wall contacted against the inner wall.
19. The bearing module of a fan structure in accordance with claim 11 , wherein the accommodating hole comprises a hole diameter, the limiting member comprises an outer diameter smaller than the hole diameter.
20. The bearing module of a fan structure in accordance with claim 11 , wherein the blocking member comprises a maximum width, the limiting member comprises an outer diameter smaller than the maximum width.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/336,874 US20130164127A1 (en) | 2011-12-23 | 2011-12-23 | Fan structure and a bearing module thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/336,874 US20130164127A1 (en) | 2011-12-23 | 2011-12-23 | Fan structure and a bearing module thereof |
Publications (1)
Publication Number | Publication Date |
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US20130164127A1 true US20130164127A1 (en) | 2013-06-27 |
Family
ID=48654741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/336,874 Abandoned US20130164127A1 (en) | 2011-12-23 | 2011-12-23 | Fan structure and a bearing module thereof |
Country Status (1)
Country | Link |
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US (1) | US20130164127A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3914071A (en) * | 1974-02-27 | 1975-10-21 | Imc Magnetics Corp | Electrically driven fan |
US4164690A (en) * | 1976-04-27 | 1979-08-14 | Rolf Muller | Compact miniature fan |
US6612814B2 (en) * | 2002-01-29 | 2003-09-02 | Ideal Elethermal Inc. | Electrical fan having an oil retaining ring to prevent loss and evaporation of lubricant oil |
US7674094B2 (en) * | 2006-09-12 | 2010-03-09 | Foxconn Technology Co., Ltd. | Electric fan with sealing lid |
-
2011
- 2011-12-23 US US13/336,874 patent/US20130164127A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3914071A (en) * | 1974-02-27 | 1975-10-21 | Imc Magnetics Corp | Electrically driven fan |
US4164690A (en) * | 1976-04-27 | 1979-08-14 | Rolf Muller | Compact miniature fan |
US6612814B2 (en) * | 2002-01-29 | 2003-09-02 | Ideal Elethermal Inc. | Electrical fan having an oil retaining ring to prevent loss and evaporation of lubricant oil |
US7674094B2 (en) * | 2006-09-12 | 2010-03-09 | Foxconn Technology Co., Ltd. | Electric fan with sealing lid |
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AS | Assignment |
Owner name: ADDA CORP., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LIN, MAO-SHENG;CHOU, CHENG-CHUN;REEL/FRAME:027443/0464 Effective date: 20110916 |
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STCB | Information on status: application discontinuation |
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