JP2011047347A5 - - Google Patents
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- Publication number
- JP2011047347A5 JP2011047347A5 JP2009197953A JP2009197953A JP2011047347A5 JP 2011047347 A5 JP2011047347 A5 JP 2011047347A5 JP 2009197953 A JP2009197953 A JP 2009197953A JP 2009197953 A JP2009197953 A JP 2009197953A JP 2011047347 A5 JP2011047347 A5 JP 2011047347A5
- Authority
- JP
- Japan
- Prior art keywords
- blower fan
- fan according
- axial
- base portion
- peripheral wall
- 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.)
- Pending
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Claims (12)
前記インペラカップの外周面に固定され、該インペラカップと共に回転することにより、軸方向の一方から吸気し、軸方向の他方側に排気する複数の羽根と、
前記インペラカップを軸受部を介して回転可能に支持するベース部と、
前記ベース部に対して、吸気側に配設された回路基板と
を備え、
前記ベース部は、周端部において、軸方向吸気側に伸びる周壁を有し、
前記周壁の一部に、その内周面が径方向外方に向けて窪むとともに、軸方向吸気側が開放された突出部が形成されている、送風ファン。 A substantially cylindrical impeller cup that rotates about a rotation axis;
A plurality of blades that are fixed to the outer peripheral surface of the impeller cup and rotate together with the impeller cup, thereby sucking air from one side in the axial direction and exhausting the other side in the axial direction;
A base portion that rotatably supports the impeller cup via a bearing portion;
A circuit board disposed on the intake side with respect to the base portion,
The base portion has a peripheral wall extending toward the axial intake side at the peripheral end portion,
A blower fan, wherein an inner peripheral surface of the peripheral wall is recessed outward in the radial direction, and a protruding portion having an open axial suction side is formed.
前記ベース部の周壁の外径と、前記インペラカップの外周部の外径とは、略同じ大きさであり、
前記突出部の内周面は、前記インペラカップの外周面よりも、径方向外方に位置している、送風ファン。 The blower fan according to claim 1,
The outer diameter of the peripheral wall of the base portion and the outer diameter of the outer peripheral portion of the impeller cup are substantially the same size,
The blower fan, wherein an inner peripheral surface of the protruding portion is positioned radially outward from an outer peripheral surface of the impeller cup.
前記羽根の回転方向側の縁部は、径方向内方側より径方向外方側の方が回転方向側に張り出している、送風ファン。 The blower fan according to claim 1,
The blower fan in which the edge part of the rotation direction side of the said blade has projected the direction of the diameter direction outside side to the rotation direction side rather than the diameter direction inner side.
前記突出部は、前記ベース部周壁の周方向に複数個形成されている、送風ファン。 The blower fan according to claim 1,
A plurality of the projecting portions are formed in the circumferential direction of the base portion peripheral wall.
前記複数の羽根を径方向外方側から覆うハウジングと、
前記ベース部と前記ハウジングとを連結する複数のリブと
をさらに備え、
前記突出部は、前記リブ間に形成されている、送風ファン。 The blower fan according to claim 1,
A housing that covers the plurality of blades from the radially outer side;
A plurality of ribs connecting the base portion and the housing;
The protrusion is a blower fan formed between the ribs.
前記突出部の内周面は、径方向内方に行くに従い排気側に向けて傾斜する傾斜面を有している、送風ファン。 The blower fan according to claim 1,
The blower fan, wherein the inner peripheral surface of the protrusion has an inclined surface that inclines toward the exhaust side as it goes radially inward.
前記突出部の周方向両側部のうち、前記羽根の回転方向側の側部は、回転方向側に行くに従い径方向内方に向けて傾斜している、送風ファン。 The blower fan according to claim 1,
Of the both sides in the circumferential direction of the projecting portion, the side of the blade in the rotational direction is inclined toward the radially inward as it goes to the rotational direction.
前記突出部の周方向側部のうち、前記羽根の回転方向側の側部は、前記リブに当接しており、
前記リブの軸方向高さは、前記突出部の周方向側部の軸方向高さよりも高い、送風ファン。 In the ventilation fan of Claim 5,
Of the circumferential side portions of the protruding portion, the side portion on the rotational direction side of the blade is in contact with the rib,
The blower fan, wherein an axial height of the rib is higher than an axial height of a circumferential side portion of the protrusion.
前記ベース部の前記突出部が形成された部位における周壁の軸方向高さは、前記突出部が形成されていない部位における周壁の軸方向高さよりも高い、送風ファン。 The blower fan according to claim 1,
The blower fan in which the axial height of the peripheral wall in the portion where the protruding portion of the base portion is formed is higher than the axial height of the peripheral wall in the portion where the protruding portion is not formed.
前記突出部の周方向側部のうち、前記羽根の回転方向反対側の側部が開口している、送風ファン。 The ventilation fan of Claim 1 WHEREIN: The ventilation fan with which the side part on the rotation direction opposite side of the said blade | wing is opened among the circumferential direction side parts of the said protrusion part.
前記回路基板の外周部は、少なくとも前記突出部との間に隙間を有して配設されている、送風ファン。 The blower fan according to claim 1,
The blower fan, wherein the outer peripheral portion of the circuit board is disposed with a gap between at least the protruding portion.
前記回路基板に対して、吸気側にステータ部が配設されており、
前記回路基板は、前記突出部に対して、軸方向排気側に配設されている、送風ファン。 The blower fan according to claim 1,
A stator portion is disposed on the intake side with respect to the circuit board,
The said circuit board is a ventilation fan arrange | positioned with respect to the said protrusion part at the axial direction exhaust side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009197953A JP2011047347A (en) | 2009-08-28 | 2009-08-28 | Blowing fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009197953A JP2011047347A (en) | 2009-08-28 | 2009-08-28 | Blowing fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011047347A JP2011047347A (en) | 2011-03-10 |
| JP2011047347A5 true JP2011047347A5 (en) | 2012-09-06 |
Family
ID=43833918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009197953A Pending JP2011047347A (en) | 2009-08-28 | 2009-08-28 | Blowing fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2011047347A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014206064A (en) * | 2013-04-11 | 2014-10-30 | 日本電産株式会社 | Fan |
| CN105927561A (en) * | 2016-04-21 | 2016-09-07 | 深圳市风酷电子科技有限公司 | Direct-current brushless fan and structure for preventing rotor from flying off |
| JP6928434B2 (en) * | 2016-09-30 | 2021-09-01 | ミネベアミツミ株式会社 | Axial fan device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62102891U (en) * | 1985-12-20 | 1987-06-30 | ||
| JP2006177309A (en) * | 2004-12-24 | 2006-07-06 | Kiko Kagi Kofun Yugenkoshi | Heat radiation structure of fan |
| JP2007224779A (en) * | 2006-02-22 | 2007-09-06 | Nippon Densan Corp | Fan motor |
| JP2008175158A (en) * | 2007-01-19 | 2008-07-31 | Nippon Densan Corp | Axial flow fan |
-
2009
- 2009-08-28 JP JP2009197953A patent/JP2011047347A/en active Pending
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