CN202707539U - Outer-rotor electric fan - Google Patents
Outer-rotor electric fan Download PDFInfo
- Publication number
- CN202707539U CN202707539U CN 201220385060 CN201220385060U CN202707539U CN 202707539 U CN202707539 U CN 202707539U CN 201220385060 CN201220385060 CN 201220385060 CN 201220385060 U CN201220385060 U CN 201220385060U CN 202707539 U CN202707539 U CN 202707539U
- Authority
- CN
- China
- Prior art keywords
- external rotor
- end cap
- electric fan
- connecting groove
- rotor electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model relates to an electric fan. The outer-rotor electric fan comprises an outer-rotor motor and a plurality of blades. The outer-rotor motor comprises an inner stator and an outer rotor, each blade is provided with a connection head, the outer rotor is provided with a plurality of connection grooves, at least one ends of the connection grooves are opened, the inner ends of the connection grooves are wide and the outer ends of the connection grooves are narrow along the radial direction of the outer rotor, the inner end of the connection head is wide and the outer end of the connection head is narrow along the radial direction of the outer rotor, and the connection heads are inserted into the connection grooves. The outer-rotor electric fan which can be replaced independently and is good in safety performance resolves the problems that blades of an existing outer-rotor electric fan can not be replaced independently and safety is poor.
Description
Technical field
The utility model relates to electric fan, relates in particular to a kind of external rotor electric fan.
Background technique
Electric fan is distinguished according to the structural type of motor, and two kinds in internal rotor fan and external rotor fan arranged.
Be 2006201050827 in China Patent No., notice of authorization day be July 11 in 2007 day, be called in the patent documentation of " a kind of New Type of Fan external rotor electric machine " and disclose a kind of external rotor fan.Fan in this patent documentation is cast in blade and external rotor together.Then existing external rotor fan is pressed into external rotor in the base circle and realizes that blade is with the connection of external rotor external rotor electric machine except being fixed on upper outside, the another kind of method of external rotor by the method in this patent documentation for blade is riveted or is welded on the Ji Quan.
The blade of existing external rotor fan all is unremovably to be fixed on the external rotor, therefore have the following disadvantages: when single blade is damaged, need the integral replacing fan, cause maintenance cost high; Connect with welding or integrated mode, blade is thrown off rear blade with the joint of external rotor and can be flown out, so poor stability.
The model utility content
The utility model provides the external rotor electric fan that a kind of blade can be changed separately and Security is good, has solved problem that existing external rotor electric fan blade can not change separately and the problem of poor stability.
Above technical problem solves by following technical proposal: a kind of external rotor electric fan, comprise external rotor electric machine and some blades, external rotor electric machine comprises inner stator and external rotor, described blade is provided with connecting head, described external rotor is provided with the connecting groove that some at least one ends open wide, connecting groove is narrow along the inner wide outer end of external rotor radial, and connecting head is narrow along the inner wide outer end of external rotor radial, and described connecting head is inserted and is embedded in the described connecting groove.During assembling, the end that connecting head opens wide from connecting groove is inserted and is embedded in the connecting groove, realizes blade fixing with external rotor.When taking off blade connecting head extracted in the connecting groove and get final product.Because connecting head and connecting groove are all narrow along the wide outer end of the radial inner end of external rotor, when blade occurred becoming flexible with the connection between the external rotor, blade can not fly out, therefore Security is good.
As preferably, described connecting groove comprises along the passage of outer roller axial extension with the opening of passage with outside connection, passage is cone structure, connecting head comprises joint and the neck that joint is linked together with blade, joint is cone structure, joint is inserted and is embedded in passage, and neck is located in the opening.Blade can both be fixed together with external rotor after repeatedly dismantling and assembling securely.If the employing column construction then slightly has will produce between wearing and tearing, blade and the external rotor and rocks.
As preferably, joint and neck are "T"-shaped and link together.The better effects if that flies out after preventing from becoming flexible between blade and the external rotor.
As preferably, described external rotor outer circumferential face is provided with some boss, and the quantity of described boss equates with the quantity of connecting groove, and connecting groove is arranged on the boss correspondingly.Do not need to take apart external rotor electric machine and can assemble easily and dismantle lower blade.
Preferred as another, the utility model also comprises end cap, and end cap is connected to the end of external rotor, and connecting groove is set directly on the outer circumferential face of external rotor.End cap plays the effect to the blade axial limiting, prevents loosening rear blade along the axial disengagement of external rotor, and Security is further promoted.
As preferably, described end cap is provided with some tenons, and described tenon is inserted and is embedded in the described connecting groove.Realize fixing with between the end cap of external rotor by the tenon groove that is connected.Compact structure, convenient during the assembling external rotor electric machine.
As preferably, described end cap is provided with at least two removal holes that connect end cap along outer roller axial, and described removal hole is tapped hole, and described removal hole circumferentially evenly distributes along end cap.By screw be screwed into go in the removal hole top external rotor realize end cap with between the external rotor separately.Convenient during the dismounting end cap.
Preferred as another, described connecting head is provided with the first through hole that extends along outer roller axial, and described end cap is provided with the second through hole, and end cap and external rotor are locked together by the connecting rod attaching nut that runs through the first through hole and the second through hole.Take off nut, end cap can be separated with external rotor.External rotor and end cap be assembled together and easily laborsaving when separating; Connecting rod can also play and prevent the fly out effect of external rotor of blade, and Security is further promoted.
As preferably, the end of described external rotor is provided with some allocation tongues, and the end of described end cap is provided with some locating slots, and allocation tongue and locating slot are distributed in same with on the coaxial cylndrical surface of external rotor, and allocation tongue is inserted in the locating slot.Cooperate allocation tongue to position by locating slot, so that can reinstall easily after pulling down end cap.Allocation tongue can also be shared the stressed of connecting rod, so that end cap is better with the join strength between the external rotor.
The utlity model has following advantage, by the mode of inserting embedding blade is linked together with external rotor, blade can be changed by monolithic, has improved the convenience when safeguarding and has reduced maintenance cost; Blade with external rotor radially clasp joint together, blade occurs when loosening with the joint of external rotor, blade can not fly out, Security is good.
Description of drawings
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is the B-B broken section enlarged diagram at the A place of Fig. 1.
Fig. 3 is the utility model embodiment two structural representation.
Fig. 4 is the utility model embodiment three structural representation.
Among the figure: external rotor electric machine 1, inner stator 11, external rotor 12, allocation tongue 121, rotating shaft 13, bearing 14, end cap 15, tenon 151, removal hole 152, the second through holes 153, locating slot 154, bolt 16, boss 17, connecting groove 18, passage 181, opening 182, blade 2, connecting head 21, joint 211, neck 212, the first through hole 213, connecting rod 3, nut 4.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Embodiment one, and referring to Fig. 1, a kind of external rotor electric fan comprises external rotor electric machine 1 and blade 2.External rotor electric machine 1 comprises inner stator 11 and external rotor 12.Be provided with rotating shaft 13 in the inner stator 11.The two ends of rotating shaft 13 respectively are supported in the inner stator 11 by a bearing 14.Rotating shaft 13 is connected with end cap 15.End cap 15 is fixed on the end of external rotor 12 by bolt 16.The outer surface of external rotor 12 is provided with boss 17.The quantity of boss 17 is identical with the quantity of blade 2.Boss 17 is provided with connecting groove 18.Connecting groove 18 opens wide towards an end of end cap 15.Connecting groove 18 comprises along external rotor 12 axially extended passages 181 with the opening 182 of passage 181 with outside connection.Passage 181 is cone structure.Blade 2 is provided with connecting head 21.Connecting head 21 comprises joint 211 and the neck 212 that joint 211 is linked together with blade 2.Joint 211 is cone structure.Joint 211 is inserted and is embedded in the passage 181.Neck 212 is located in the opening 182.
Referring to Fig. 2., joint 211 and neck 212 are "T"-shaped and link together, so that connecting head 21 is narrow along the wide outer end of external rotor 12 radial inner end.Passage 181 and opening 182 are "T"-shaped and link together, so that connecting groove 18 is narrow along the wide outer end of external rotor 12 radial inner end.
Referring to Fig. 1 and Fig. 2, the method that blade 2 is assembled on the external rotor 12 is: an end that opens wide from connecting groove 18 makes joint 211 little ends dock passage 181, neck 212 aligned openings 182, then along the axial compression connecting head 21 of external rotor 12, make connecting head 21 insert to be embedded in the connecting groove 18 and get final product.When producing in the using process when loosening, can be further along the axial compression connecting head 21 of external rotor 12 so that connecting head 21 rechucks in connecting groove 18.When loosening, because blade 2 is hooked in the connecting groove 18, therefore blade 2 can not produce the phenomenon that flies out in rotation by connecting head 21.
Embodiment two, referring to Fig. 3, with embodiment one difference are: on the outer circumferential face of the external rotors 12 that connecting groove 18 directly arranges.End cap 15 is provided with tenon 151 and removal hole 152.The mode that end cap 5 is inserted in the passage 181 that is embedded in connecting groove 18 by tenon 151 is fixed together with external rotor 12.Removal hole 152 has four.Removal hole 152 circumferentially evenly distributes along end cap 15.Removal hole 152 axially connects end cap along external rotor 12.Removal hole 152 is tapped hole.
During use, be screwed into by bolt and go top external rotor 12 to realize that end cap 15 is with the separation of external rotor 12 in the removal hole 152.
Embodiment three, and referring to Fig. 4, with embodiment two difference be: connecting head 21 is provided with along external rotor 12 axially extended the first through holes 213.End cap 15 is provided with the second through hole 153.End cap 15 and external rotor 12 are locked together by connecting rod 3 attaching nuts 4 that run through the first through hole 213 and the second through hole 153.The end of external rotor 12 is provided with some allocation tongues 121.The end of end cap 15 is provided with some locating slots 154.Allocation tongue 121 and locating slot 154 are distributed in same with on the coaxial cylndrical surface of external rotor 12.Allocation tongue 121 is inserted in the locating slot 154.
Claims (9)
1. external rotor electric fan, comprise external rotor electric machine and some blades, external rotor electric machine comprises inner stator and external rotor, it is characterized in that, described blade is provided with connecting head, and described external rotor is provided with the connecting groove that some at least one ends open wide, and connecting groove is narrow along the inner wide outer end of external rotor radial, connecting head is narrow along the inner wide outer end of external rotor radial, and described connecting head is inserted and is embedded in the described connecting groove.
2. external rotor electric fan according to claim 1, it is characterized in that, described connecting groove comprises along the passage of outer roller axial extension with the opening of passage with outside connection, passage is cone structure, connecting head comprises joint and the neck that joint is linked together with blade, joint is cone structure, and joint is inserted and is embedded in passage, and neck is located in the opening.
3. external rotor electric fan according to claim 2 is characterized in that, joint and neck are "T"-shaped and link together.
4. according to claim 1 and 2 or 3 described external rotor electric fans, it is characterized in that, described external rotor outer circumferential face is provided with some boss, and the quantity of described boss equates with the quantity of connecting groove, and connecting groove is arranged on the boss correspondingly.
5. according to claim 1 and 2 or 3 described external rotor electric fans, it is characterized in that, comprise that also end cap, end cap are connected to the end of external rotor, connecting groove is set directly on the outer circumferential face of external rotor.
6. external rotor electric fan according to claim 5 is characterized in that, described end cap is provided with some tenons, and described tenon is inserted and is embedded in the described connecting groove.
7. external rotor electric fan according to claim 6 is characterized in that, described end cap is provided with at least two removal holes that connect end cap along outer roller axial, and described removal hole is tapped hole, and described removal hole circumferentially evenly distributes along end cap.
8. external rotor electric fan according to claim 5, it is characterized in that, described connecting head is provided with the first through hole that extends along outer roller axial, and described end cap is provided with the second through hole, and end cap and external rotor are locked together by the connecting rod attaching nut that runs through the first through hole and the second through hole.
9. external rotor electric fan according to claim 8, it is characterized in that, the end of described external rotor is provided with some allocation tongues, and the end of described end cap is provided with some locating slots, allocation tongue and locating slot are distributed in same with on the coaxial cylndrical surface of external rotor, and allocation tongue is inserted in the locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385060 CN202707539U (en) | 2012-08-06 | 2012-08-06 | Outer-rotor electric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220385060 CN202707539U (en) | 2012-08-06 | 2012-08-06 | Outer-rotor electric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707539U true CN202707539U (en) | 2013-01-30 |
Family
ID=47587846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220385060 Expired - Lifetime CN202707539U (en) | 2012-08-06 | 2012-08-06 | Outer-rotor electric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321924A (en) * | 2013-06-28 | 2013-09-25 | 周峰 | Efficient fan |
-
2012
- 2012-08-06 CN CN 201220385060 patent/CN202707539U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321924A (en) * | 2013-06-28 | 2013-09-25 | 周峰 | Efficient fan |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205663652U (en) | Connection structure and compressor of compressor impeller and main shaft | |
| CN202707539U (en) | Outer-rotor electric fan | |
| US7540713B1 (en) | Threaded rotor assembly with a centrifugal lock | |
| CN110829745B (en) | Disassembly-free motor bearing disassembling and assembling method | |
| CN205663649U (en) | Locking device of chemical pump impeller | |
| CN103843516A (en) | Mowing device for lawn mower and mounting method for mowing device | |
| CN206673712U (en) | A kind of motor of fast changeable stator | |
| CN102700983A (en) | Device for collecting and separating sheet media | |
| CN209571908U (en) | Motor and motor and retarder connection structure | |
| CN202220749U (en) | Connection structure of wind wheel and rotating shaft of blower | |
| CN202145607U (en) | Dynamic balancing mechanism for motor rotor | |
| CN116122921A (en) | Local balanced structure of aeroengine fan | |
| US20120100027A1 (en) | Internal-Rotation Type Gear Pump and Method of Assembling and Repairing an Internal-Rotation Type Gear Pump | |
| CN204089380U (en) | Rotor assembly and the motor with it | |
| CN103843515A (en) | Mowing device for lawn mower and mounting method for mowing device | |
| CN104393696B (en) | Exciter and rotor structure of exciter | |
| CN102905793A (en) | Centrifugal separator and rotor | |
| CN206495905U (en) | Shaft coupling | |
| CN107191378B (en) | The connection structure of compressor and motor | |
| CN205704436U (en) | A kind of torr cutter shaft axis body | |
| CN202037033U (en) | Rotating ring structure of coal pulverizer | |
| CN211082402U (en) | Motor shaft and flange dish mounting structure of fan | |
| CN204458507U (en) | The fixed structure of centrifugation blade and air-conditioning | |
| CN203645472U (en) | Rotor | |
| CN204061591U (en) | A kind of conical surface centring means of transmission shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |