CN2708016Y - Electric ventilation fan - Google Patents
Electric ventilation fan Download PDFInfo
- Publication number
- CN2708016Y CN2708016Y CN 200420029324 CN200420029324U CN2708016Y CN 2708016 Y CN2708016 Y CN 2708016Y CN 200420029324 CN200420029324 CN 200420029324 CN 200420029324 U CN200420029324 U CN 200420029324U CN 2708016 Y CN2708016 Y CN 2708016Y
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- main shaft
- wind wheel
- notch
- motor
- 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 - Fee Related
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electric ventilation fan, comprising a motor and a wind wheel. The main shaft of the motor is sheathed on the shaft sleeve of the wind wheel, and the end of the main shaft protrudes from the shaft sleeve. The utility model is characterized in that a notch is arranged on the top of the shaft sleeve, and a cap-shaped screw nut is screwed in the end of the main shaft of the motor and the shaft sleeve and is wrapped to the notch position on the shaft sleeve. The structure can match the shaft sleeve of the wind wheel with the main shaft of the motor closely, and thus the electric ventilation fan has the advantages of small vibration and low noise.
Description
Technical field
The utility model relates to a kind of ventilation fan.
Background technique
Existing ventilation fan comprises motor and wind wheel, and the main shaft of motor is set on the axle sleeve of wind wheel, and main shaft protrudes axle sleeve, and spiral has nut on the main shaft of protrusion, and nut is tightened on the top of axle sleeve.There is following defective in its structure: wind wheel utilizes nut to compress the top of axle sleeve, make it be installed on electric machine main shaft, because electric machine main shaft is high speed rotating, and there is the gap between wind wheel axle sleeve and the electric machine main shaft, promptly there is the room, so, when wind wheel rotates on electric machine main shaft, can produce bigger vibration, cause noise.
The model utility content
In order to solve the defective that exists in the above-mentioned prior art, the utility model provides to be between a kind of wind wheel axle sleeve and the electric machine main shaft and closely cooperates, have the vibration little, the electric fan that noise is low.
The technical solution of the utility model is: a kind of electric fan, comprise motor and wind wheel, the axle sleeve of wind wheel is placed on the main shaft of motor, axle sleeve is protruded in the end of main shaft, the top of described axle sleeve is to have to have notch and journey cone angle, makes the axle sleeve at notch place have elasticity, and a cap nut screws in the end of main shaft, and wrapping up notch to the axle sleeve, cap nut is locked electric machine main shaft and axle sleeve together.Described notch is the breach that the axle sleeve top has, and several breach are the opening that even shape is arranged at axle sleeve.
Described notch can be the concave station at axle sleeve top, and a plurality of concave stations are the opening that even shape is arranged at axle sleeve, can reach too to make axle sleeve have elasticity, is convenient to screwing of cap nut.
The beneficial effects of the utility model are: owing to have notch at the top of wind wheel axle sleeve, make place, axle sleeve top have elasticity, and electric machine main shaft is set in described axle sleeve and protrudes axle sleeve, screw in the end and the axle sleeve of electric machine main shaft again with cap nut, and wrap up notch position to the axle sleeve, and make between electric machine main shaft and the wind wheel axle sleeve to closely cooperate, avoid because of having the gap between wind wheel axle sleeve and the electric machine main shaft, and produce bigger vibration, cause the defective of noise.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a wind wheel structure schematic representation of the present utility model
Fig. 3 is that the A-A of Fig. 2 is to sectional view.
Embodiment
As shown in Figures 1 to 3: a kind of electric fan, comprise motor 1 and wind wheel 2, the axle sleeve 4 of wind wheel 2 is placed on the main shaft 3 of motor 1, axle sleeve 4 is protruded in the end of described main shaft 3, and wherein, the top 5 of described axle sleeve 4 has notch 6 and is cone angle 8, make notch 6 residing axle sleeves 4 have elasticity, one cap nut 7 screws in the end and the axle sleeve 4 of main shafts 3, and wraps up the notch 6 to the axle sleeve, and cap nut 7 is locked axle sleeve 4 and electric machine main shaft 3 together.Notch 6 is the breach at axle sleeve 4 tops, and several breach are the opening that even shape is arranged at axle sleeve, makes its axle sleeve opening have elasticity, and has certain tapering, is convenient to cap nut 7 axle sleeve 4 is tightened on electric machine main shaft 3.
Above-mentioned notch 6 can also be that axle sleeve 4 tops are provided with concave station, and several concave stations are the opening that even shape is arranged at axle sleeve 4.Top at axle sleeve 4 evenly has notch 6, can make the top deliquescing of axle sleeve like this, when nut 7 screws in the end of motors 1 main shaft 3 and axle sleeve 4, because the pressure of nut 7 makes axle sleeve 4 openings compress main shaft 3, thereby wind wheel 2 and main shaft 3 is closely cooperated.And general axle sleeve 4 is to be made by plastics, has certain elasticity, so when with nut 7 wind wheel 2 being fixed on main shaft 3, playing certain antihunt action, thereby be difficult for making wind wheel 2 to get loose, it is more reliable and more stable to get into smooth; And the technology of opening notch 6 on axle sleeve 4 is simple.
Claims (3)
1. electric fan, comprise motor (1) and wind wheel (2), the axle sleeve (4) of wind wheel (2) is placed on the main shaft (3) of motor (1), axle sleeve (4) is protruded in the end of described main shaft (3), it is characterized in that: the top (5) of described axle sleeve (4) has notch (6) and is cone angle (8), one cap nut (7) screws in the end and the axle sleeve (4) of main shaft (3), and parcel is to the notch (6) that overlaps on (4).
2. electric fan according to claim 1 is characterized in that: described notch (6) is the breach at axle sleeve (4) top, and some breach are the opening that even shape is arranged at axle sleeve.
3. electric fan according to claim 1 is characterized in that: described notch (6) is the concave station at axle sleeve (4) top, and some concave stations are the opening that even shape is arranged at axle sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029324 CN2708016Y (en) | 2004-07-14 | 2004-07-14 | Electric ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029324 CN2708016Y (en) | 2004-07-14 | 2004-07-14 | Electric ventilation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708016Y true CN2708016Y (en) | 2005-07-06 |
Family
ID=34849803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029324 Expired - Fee Related CN2708016Y (en) | 2004-07-14 | 2004-07-14 | Electric ventilation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708016Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679674A (en) * | 2018-07-02 | 2018-10-19 | 珠海格力电器股份有限公司 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
-
2004
- 2004-07-14 CN CN 200420029324 patent/CN2708016Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679674A (en) * | 2018-07-02 | 2018-10-19 | 珠海格力电器股份有限公司 | Rotating force transmission device, rotating device for electrical appliance, wind wheel device and range hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |