CN102072188A - Safety net cover for fan - Google Patents
Safety net cover for fan Download PDFInfo
- Publication number
- CN102072188A CN102072188A CN201110032067XA CN201110032067A CN102072188A CN 102072188 A CN102072188 A CN 102072188A CN 201110032067X A CN201110032067X A CN 201110032067XA CN 201110032067 A CN201110032067 A CN 201110032067A CN 102072188 A CN102072188 A CN 102072188A
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- CN
- China
- Prior art keywords
- guard
- plastics
- metal guard
- net cover
- locating slot
- 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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Classifications
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a safety net cover for a fan. The safety net cover comprises a front metal net cover, a back metal net cover and an annular middle plastic net cover, wherein the back metal net cover is provided with a central hole through which a power revolving shaft of a fan blade passes; positioning grooves are formed at ring edge positions on the front side and the back side of the middle plastic net cover respectively; the peripheries of the front metal net cover and the back metal net cover are clamped in the positioning grooves on the front side and the back side of the middle plastic net cover respectively; the front side of the middle plastic net cover is provided with a skirt part which extends along a radial direction; a central position surrounded by the skirt part is vacant; the positioning groove on the front side of the middle plastic net cover is formed at the ring edge position on the inner side of the skirt part; and the periphery of the front metal net cover is clamped in the positioning groove of the skirt part. Due to the characteristics and advantages of the safety net cover, the safety net cover can be applied to an electric fan product.
Description
Technical field
The present invention relates to the safety cage that electric fan is used, take in the flabellum or the impeller of electric fan in the described fan screen.When described flabellum rotated, described fan screen not only can not hinder flowing of air but also can provide safety protection for fan.
The existing safety cage that relates to electric fan is a fan screen, generally all is to make as the earliest box fan with the plastic monoblock moulding, or is welded as common head-shaking fan after bending with steel wire.But these existing products all are with a kind of material such as plastics or steel wire formation, can not take into account the impact strength of corner of guard and the rigidity of guard side simultaneously, if materials too thick (steel wire is too thick) then cost are than higher and waste material, if too thin could not guarantee the safe handling, the rotation angle position of the steel wire guard of oscillating fan particularly, owing to can occur the stretching and the distortion of rotation angle position during the steel wire bending, corresponding shock resistance dynamics variation, and this rotation angle position exactly is exactly the position of emphasizing to need to guarantee structural strength in the safety standard most; Rigidity at the sidepiece of the next guard of situation that all uses plastics is not enough.This problem is to perplex the common difficulty of whole fan industry or fan guard manufacturing at present for this reason.
Summary of the invention
For make fan screen particularly the material of the guard of steel wire class can relatively save but can make it meet shock proof safety requirement, also can meet rigidity requirement, particularly make the rotation angle position of safety cage can have stronger anti-impact force, the present invention proposes the safety cage that a kind of fan is used, metal guard and back metal guard before comprising, described back metal guard have the center hole that allows the power shaft of electric fan pass; It is characterized in that, also comprise middle plastics guard in the form of a ring, the position, ring limit of the front and back side of plastics guards has locating slot respectively in the middle of described, described before the periphery of metal guard and back metal guard snap in respectively described in the middle of in the locating slot of front and back side of plastics guard.
According to technique scheme, in fact described safety cage is that described preceding metal guard, back metal guard and described middle plastics guard front and back combine by three parts mainly; The position, ring limit of the front and back side of plastics guard has locating slot respectively in the middle of wherein said, in fact the position, ring limit that is exactly the front and back side of plastics guard in the middle of described be provided with respectively can make described before the metal guard, the mechanism that back metal guard can be located adaptedly, this positioning means comprises L-shaped positioning spigot, also can be referred to as locating slot, metal guard before described, thereby can adaptively snapping in this locating slot, the periphery of back metal guard can contain described preceding metal guard by the position, ring limit of the front and back side of plastics guard in the middle of described, the outer periphery of back metal guard forms potential safety hazard along making it be unlikely to expose.Metal guard, back metal guard can also be connected the position, ring limit of the front and back side of described middle plastics guard by means of auxiliary devices such as screws before described.
The periphery of metal guard, back metal guard snaps in this locating slot before described, be meant described before the external diameter of periphery of metal guard, back metal guard adaptive identical with the internal diameter of described locating slot, also can be to have certain clearance between them.
According to technique scheme, before described the metal guard, after the metal guard and described in the middle of before and after the plastics guard after the combination, the rotation angle position of described safety cage is actually the steel wire that plastic materials or plastic overmold the periphery of metal guard, the favorable elasticity that utilizes plastics to have like this makes its rotation angle position can bear bigger impact force, and the rotation angle position or the side, front and back that cover on described safety cage by means of metal guard, back wire netting before described again form reasonable rigidity.The width of plastics guard in the middle of distance before described between metal guard and the back metal guard is described in other words, can specifically determine according to the thickness of flabellum, because the ring avris portion of guard is relatively lacked and be positioned to this distance, the intensity of plastics own can satisfy demand for security.
Further technological scheme can also be, the front side of plastics guard has the shirt rim portion of radially extending in the middle of described, described shirt rim portion around central position be vacancy, the described locating slot of plastics guards front side is arranged in the portion of described shirt rim in the middle of described, described before the periphery of metal guard snap in the described locating slot of described shirt rim portion.Further technological scheme can also be, described in the middle of the plastics guard shirt rim portion to the length of radially extending be 1cm between the 5cm, wherein Zui Jia radially extended length is that 1cm is between the 3cm.According to this scheme, the described shirt rim portion of radially extending not only can make the front hook position of described safety cage all use the plastics manufacturing, and can so that before will be described the metal guard be fixed on the plastics guard of described centre.The most exposed to contact position of the person of being to use, front side of described safety cage preferably can be connected the location between plastics guards and the described preceding metal guard in the middle of described securely, prevents potential safety hazard.Because the periphery of metal guard snaps in the described locating slot of described shirt rim portion before described, therefore described before the metal guard can with described shirt rim portion around the vacancy position sealed.
Further technological scheme can also be, described locating slot is arranged on the rear side of described shirt rim portion, described before the periphery of metal guard be connected the rear side of described shirt rim portion.The rear side of wherein said shirt rim portion is meant a side that is positioned in the portion of described shirt rim by flabellum, also promptly with the pairing side of outer surface.Like this when electric fan rotates, after wind enters from described back metal guard, the metal guard blows out before described again, described shirt rim portion withstand described before the periphery of metal guard, make described before the metal guard can not make because of long-term wind its with described in the middle of produce between the plastics guard and become flexible.
Further technological scheme can also be, on the locating slot wall body of described middle plastics guard front side slotted eye is set, space and described slotted eye that screw passes described preceding metal guard periphery are connected in metal guard before described on the locating slot of described middle plastics guard front side.
Further technological scheme can also be, also comprise trim ring, described trim ring is provided with axially extended locating column, be positioned at and also be provided with the positioning hole adaptive with described locating column on the locating slot wall body of plastics guards rear side in the middle of described, the space that described trim ring lid is pressed on the metal guard periphery of described back and the locating column on the described trim ring passes described back metal guard periphery embeds in the described positioning hole.Like this can be only be connected by means of drive fit between described locating column and the described positioning hole, just can by described trim ring with described back metal guard be positioned at described in the middle of on the plastics guard, thereby make install convenient.Certainly can also between described trim ring and described middle plastics guard, connecting screw be set.
Further technological scheme can also be, the spoke of described middle plastics guard is spaced and in axial direction extends, and is convenient to clean described middle plastics guard like this; Further, described spoke inboard is set to the groove shape, thereby further improves the intensity of described spoke
Because the present invention has These characteristics and advantage, can use in electric fan product.
Description of drawings
Fig. 1 is a product perspective exploded view of using technical solution of the present invention;
Fig. 2 is the assembling schematic representation between described preceding metal guard and the described middle plastics guard;
Fig. 3 is the A portion enlarged view among Fig. 2;
Fig. 4 is a B portion enlarged view among Fig. 2;
Fig. 5 is the partial cutaway schematic at the position, front side of described middle plastics guard;
Fig. 6 is the generalized section after the product of application technical solution of the present invention is assembled.
Embodiment
Below in conjunction with accompanying drawing the embodiment of using technical solution of the present invention is described further.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and shown in Figure 6, the safety cage that a kind of fan is used, metal guard 1, back metal guard 2 and middle plastics guard 3 in the form of a ring before comprising, the center of described back metal guard 2 is provided with the center hole 20 that allows the power shaft of electric fan pass, as shown in Figure 6, described preceding metal guard 1, back metal guard 2 and described middle plastics guard 3 front and back combination are cydariform.
Wherein, as shown in Figure 1 and Figure 2, position, the front side radius vector of plastics guard 3 extends to form shirt rim portion 4 to direction in the middle of described, the length of radially extending of described shirt rim portion 4 is that 1cm is between the 2cm, described shirt rim portion 4 is vacancy or cavity around the central positions 40 that form, and secondly the slotted eye of intermittently arranging that is strip 42 is set on the wall body of described locating slot 41.
Because described shirt rim portion 4 is vertical substantially with the bearing of trend of described centre plastics guard 3, thereby between them, be formed naturally the rotation angle position of L shaped structure, this L shaped rotation angle position itself can form locating slot 41, metal guard 1 snaps in this locating slot 41 before described, described before the outer periphery of metal guard 1 just withstand described in the middle of the rear side of rotation angle position of plastics guard 3; Also can be as shown in Figure 5, at the rear side of described shirt rim portion 4 step-like groove (seam in other words) is set, this groove forms locating slot 41, described before metal guard 1 periphery also be arranged on the rear side of described shirt rim portion 4 and snap in the described locating slot 41.
Screw 5 pass described before space between the spoke of metal guard 1 periphery and described slotted eye 42 will be described before metal guard 1 be connected on the locating slot 41 of plastics guard 3 front sides, described centre (rear side that is positioned at described shirt rim portion 4 in other words), wherein the both sides of metal guard 1 and described shirt rim portion 4 also are respectively arranged with pad 6 before described, and it is fastening that convenient so described screw 5 passes the back; Certainly the pad 6 that is positioned at described shirt rim portion 4 front sides can be set to the pad of nut type, promptly not only can make pad but also can make nut.Metal guard 1 is connected the rear side of described shirt rim portion 4 before described, when electric fan rotates, after wind enters from described back wire netting 2, blow out from described preceding metal guard 1 again, described shirt rim portion 4 withstand described before the periphery of metal guard 1, make described before metal guard 1 can not be stranded long-term wind and make its with described in the middle of produce between the plastics guard 3 and become flexible.
Wherein, the spoke 30 of described middle plastics guard 3 is spaced and in axial direction extends.Be convenient to clean described middle plastics guard 3 like this.Secondly described spoke 30 inboards are set to groove shape 301, and the both sides convex type of described groove shape 301 is similar to stiffening rib, thereby further improves the intensity of described spoke 30.
Wherein, as Fig. 1, Fig. 2 and shown in Figure 5, the position, ring limit of the rear side of plastics guard 3 is provided with locating slot 31 in the middle of described, the described locating slot 31 L-shaped positioning spigots that are similar to, the periphery of described back metal guard 2 snaps in the locating slot 31 of described middle plastics guard 3 rear sides, thereby plastics guard 3 can all contain the outer periphery of described back metal guard 2 in the middle of described, prevents that the surperficial burr on metal guard 2 peripheries of described back from hurting sb.'s feelings.
As Fig. 1 and shown in Figure 6, the periphery outside of described back metal guard 2 also is provided with trim ring 7, described trim ring 7 is provided with axially extended locating column 71, be positioned at and also be provided with the positioning hole 32 adaptive with described locating column 71 in the middle of described on the plastics guard 3, the space that described trim ring 7 lids are pressed on the periphery of described back metal guard 2 and the locating column 71 on the described trim ring 7 passes described back metal guard 2 peripheries embeds in the described positioning hole 32.The outer periphery of wherein said trim ring 7 also snaps in the described locating slot 31, like this can be only be connected by means of drive fit between described locating column 71 and the described positioning hole 32, just can described back metal guard 2 be positioned on the described middle plastics guard 3, facility be installed thereby make by described trim ring 7.Certainly can also described trim ring 7 with described in the middle of connecting screw is set between the plastics guard 3 substitutes and be connected described locating column 71, perhaps two schemes and usefulness.
According to technique scheme, in fact described safety cage is mainly finished by combination before and after metal guard 1, back metal guard 2 and described middle plastics guard 3 three parts before described, the rotation angle position of described safety cage is actually plastic materials, the favorable elasticity that utilizes plastics to have like this can bear bigger impact force, and forms reasonable rigidity by means of metal guard 1, back metal guard 2 before described at the rotation angle position or the position, front and back of described safety cage again.The width of plastics guard 3 can specifically be determined according to the thickness of flabellum in the middle of distance before described between metal guard 1 and the back metal guard 2 was described in other words.The safety cage that the fan of said structure is used particularly its rotation angle position not only impact resistance improve greatly, the rigidity at side position has solved a difficult problem that restricts whole industry development for a long time also than higher.
Claims (8)
1. the safety cage used of fan, metal guard and back metal guard before comprising, described back metal guard have the center hole that allows the power shaft of electric fan pass; It is characterized in that, also comprise middle plastics guard in the form of a ring, the position, ring limit of the front and back side of plastics guards has locating slot respectively in the middle of described, described before the periphery of metal guard and back metal guard snap in respectively described in the middle of in the locating slot of front and back side of plastics guard.
2. the safety cage that fan according to claim 1 is used, it is characterized in that, the front side of plastics guard has the shirt rim portion of radially extending in the middle of described, described shirt rim portion around central position be vacancy, the described locating slot of plastics guards front side is arranged in the portion of described shirt rim in the middle of described, described before the periphery of metal guard snap in the described locating slot of described shirt rim portion.
3. the safety cage that fan according to claim 2 is used is characterized in that, the shirt rim portion of described middle plastics guard is that 1cm is between the 5cm to the length of radially extending.
4. the safety cage that fan according to claim 2 is used is characterized in that, described locating slot is arranged on the rear side of described shirt rim portion, described before the periphery of metal guard be connected the rear side of described shirt rim portion.
5. the safety cage of using according to claim 1,2,3 or 4 described fans, it is characterized in that, on the locating slot wall body of the front side of plastics guard slotted eye is set in the middle of described, screw pass described before the space of metal guard periphery and described slotted eye will be described before the metal guard be connected on the locating slot of plastics guard front side, described centre.
6. the safety cage of using according to claim 1,2,3 or 4 described fans, it is characterized in that, also comprise trim ring, described trim ring is provided with axially extended locating column, be positioned at and also be provided with the positioning hole adaptive with described locating column on the locating slot wall body of plastics guards rear side in the middle of described, the space that described trim ring lid is pressed on the metal guard periphery of described back and the locating column on the described trim ring passes described back metal guard periphery embeds in the described positioning hole.
7. the safety cage of using according to claim 1,2,3 or 4 described fans is characterized in that, the spoke of described middle plastics guard is spaced and in axial direction extends.
8. the safety cage that fan according to claim 7 is used is characterized in that, described spoke inboard is set to the groove shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032067XA CN102072188A (en) | 2011-01-28 | 2011-01-28 | Safety net cover for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110032067XA CN102072188A (en) | 2011-01-28 | 2011-01-28 | Safety net cover for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102072188A true CN102072188A (en) | 2011-05-25 |
Family
ID=44030872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110032067XA Pending CN102072188A (en) | 2011-01-28 | 2011-01-28 | Safety net cover for fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072188A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118201A (en) * | 2018-02-07 | 2019-08-13 | 广东美的环境电器制造有限公司 | A kind of fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042472A (en) * | 1998-03-10 | 2000-03-28 | Ford Motor Company | Method and apparatus to control air distribution doors in an air handling system |
| US6375440B2 (en) * | 1999-09-30 | 2002-04-23 | Fujitsu Limited | Fan unit, fan assembly, and an apparatus comprising the fan assembly |
| CN101290016A (en) * | 2007-04-17 | 2008-10-22 | 索尼株式会社 | Axial fan apparatus, housing, and electronic apparatus |
| CN201943991U (en) * | 2011-01-28 | 2011-08-24 | 佛山市富士宝电器科技股份有限公司 | Safe mesh cover for fan |
-
2011
- 2011-01-28 CN CN201110032067XA patent/CN102072188A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042472A (en) * | 1998-03-10 | 2000-03-28 | Ford Motor Company | Method and apparatus to control air distribution doors in an air handling system |
| US6375440B2 (en) * | 1999-09-30 | 2002-04-23 | Fujitsu Limited | Fan unit, fan assembly, and an apparatus comprising the fan assembly |
| CN101290016A (en) * | 2007-04-17 | 2008-10-22 | 索尼株式会社 | Axial fan apparatus, housing, and electronic apparatus |
| CN201943991U (en) * | 2011-01-28 | 2011-08-24 | 佛山市富士宝电器科技股份有限公司 | Safe mesh cover for fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118201A (en) * | 2018-02-07 | 2019-08-13 | 广东美的环境电器制造有限公司 | A kind of fan |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20110525 |