CN201475006U - AC fan - Google Patents
AC fan Download PDFInfo
- Publication number
- CN201475006U CN201475006U CN2009201671173U CN200920167117U CN201475006U CN 201475006 U CN201475006 U CN 201475006U CN 2009201671173 U CN2009201671173 U CN 2009201671173U CN 200920167117 U CN200920167117 U CN 200920167117U CN 201475006 U CN201475006 U CN 201475006U
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- CN
- China
- Prior art keywords
- bearing
- fan
- setting sleeve
- metal
- vibration proof
- 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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Abstract
The utility model relates to an alternating current (AC) fan which comprises a base (13), a fan blade (1), a rotor (2) a stator (9), a stator coil (8), an upper bearing (51), a lower bearing (52) and a bearing locating sleeve (10), wherein the bearing locating sleeve (10) is molded into a whole and is a cylinder provided with a central axle hole (101); one end of the cylinder is provided with a boss (102) surrounding the outer surface of the cylinder; and an upper and a lower grooves (103) are respectively arranged at the positions where the upper bearing (51) and the lower bearing (52) are suitable to be embedded from the inner surface of the cylinder to the two end surfaces thereof. Due to the improvement of the bearing locating sleeve, the concentricity of the fan is increased, the natural vibration is reduced.
Description
Technical field
The utility model relates to a kind of ac fan, especially relates to the improved ac fan of a kind of bearing setting sleeve.
Background technique
The structure that is used to the ac fan that ventilates and dispel the heat of the prior art as shown in Figure 1; comprise base 13; rotor 2; be located at the shaft 21 on the rotor 2; the leaf blade 1 of fixedlying connected with rotor 2; stator 9; be located at the stator coil 8 on the stator 9; axle jump ring 11; upper ball bearing 51; lower ball bearing 52 and the upper bearing (metal) setting sleeve 1011 and lower bearing setting sleeve 1021 (see figure 2)s that are used for fixing and support lower ball bearing 52 that are used for fixing and support upper ball bearing 51; described upper bearing (metal) setting sleeve 1011 and lower bearing setting sleeve 1021 are used and are used for fixing and support lower ball bearing; the bearing setting sleeve of this up-down structure formula usually can cause the vibration of fan under the situation of running time than length, its noise also strengthens with the increase of service time.The reason that has this problem is that the axially locating of upper ball bearing 51 and lower ball bearing 52 relies on upper bearing (metal) setting sleeve 1011 and lower bearing setting sleeve 1021 respectively, and the concentricity that very easily occurs in the using process of fan between upper bearing (metal) setting sleeve 1011 and the lower bearing setting sleeve 1021 is bad, promptly eccentric easily, thereby cause two concentricitys between the ball bearing bad, finally cause described ac fan self-vibration strong, noise is big.
A kind of nesting type ball bearing DC fan is disclosed in notification number is the Chinese patent literature of CN2635956Y, before this patent application day, the DC fan of prior art since two bearing directly be nested in respectively with the integrated cylinder chamber of plastics housing in, and owing in the process of molding and forming, produce the inequality of different contractibilitys and product wall thickness because of cold and hot conversion, and use the middle (center) bearing intensification to make many-sided reasons such as plastics housing distortion, cause the concentricity of the plastics inner chamber of bearing location can not satisfy the needs of bearing location, for this reason, the technological scheme that solves the problems of the technologies described above has been proposed in this patent documentation, an axle sleeve promptly is set in the cylinder chamber of plastics housing, this axle sleeve outside and the press fit of described plastics housing, the two ends of axle sleeve inboard are respectively equipped with the cylindrical cavity with described ball bearing press fit.Though described axle sleeve is a single piece, but its essence is the upper bearing (metal) setting sleeve 51 in the above-mentioned ac fan and the product of lower bearing setting sleeve 52 simple combinations, promptly the boss by axle sleeve inside limits described bearing, and so the axle sleeve of structure requires the wall of axle sleeve thicker after processing, promptly to raw-material requirement than higher, and the cross section that processes described boss and be positioned at described axle sleeve middle part is trapezoidal cylindrical body more complicated.
The model utility content
For this reason, a kind of thereby technical problem to be solved in the utility model is to propose by the architecture advances of bearing setting sleeve being improved the ac fan of the concentricity between the bearing.
Another technical problem to be solved in the utility model is to propose a kind of bearing setting sleeve that is used for ac fan easy to process, not high to raw-material thickness requirement.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of ac fan, comprise base, rotor, the leaf blade of fixedlying connected with rotor, stator, bearing setting sleeve with the center hole press fit of described stator, and be located at upper bearing (metal) and lower bearing in the described bearing setting sleeve, described bearing setting sleeve is integrated, it is for having a central axis hole) cylindrical body, be provided with boss at a described cylindrical end around described cylindrical body outer surface, be suitable for the position that described upper bearing (metal) and lower bearing embed at described cylindrical internal surface apart from described cylindrical two end faces and be respectively arranged with two grooves up and down, be respectively equipped with in described two grooves up and down be used to snap in described groove and be used to support in the going up of described upper bearing (metal) and lower bearing jump ring and down in jump ring.
Between the described seat end and described bearing setting sleeve, be provided with positioning means.On the described boss of described bearing setting sleeve, evenly be provided with a plurality of positioning spiro pits.Described positioning spiro pit is 3.
Described bearing setting sleeve is a metal processing piece.Described bearing setting sleeve is a copper spare.
Described upper bearing (metal) and lower bearing are ball bearing.
Be provided with the vibration proof cardboard between jump ring and the described upper bearing (metal) on described.Be provided with the vibration proof cardboard between jump ring (72) and the described lower bearing under described.Be respectively equipped with vibration proof cardboard and/or vibration proof cardboard towards the end face of leaf blade and/or at described lower bearing towards the end face of base at described upper bearing (metal).
Above-mentioned vibration proof cardboard is red cardboard.
Technique scheme of the present utility model compared with prior art has the following advantages: the bearing setting sleeve in (1) ac fan of the present utility model is formed in one, it comprise the groove of being located at described bearing setting sleeve internal surface and with described groove fit be used to support in the going up of metal (upper jump ring and down in jump ring, such structure is improved the bearing setting sleeve of being made up of upper bearing (metal) setting sleeve and lower bearing setting sleeve of the prior art, do not need to process respectively two bearing setting sleeves that structure is different, reduced process step, installation steps have also been simplified, such structure also is different from the axle sleeve of mentioning in the background technique that is used for DC fan, bearing setting sleeve of the present utility model is less demanding to raw-material wall thickness, and process simpler, and the existing concentricity of ac fan that has also solved prior art simultaneously is low, the shortcoming that the self-excited oscillation of fan is strong and noise is big; (2) ac fan of the present utility model is provided with the vibration proof cardboard between interior jump ring and ball bearing, and also be provided with the vibration proof cardboard at another end face of described ball bearing, such design has reduced frictional force, has reduced the self-excited oscillation of described ac fan, has reduced noise.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the STRUCTURE DECOMPOSITION figure of the ac fan of prior art;
Fig. 2 is the structural representation of the bearing setting sleeve of prior art;
Fig. 3 is the STRUCTURE DECOMPOSITION figure of ac fan of the present utility model;
Fig. 4 is the structural representation of ac fan of the present utility model;
Fig. 5 is the structural representation of the bearing setting sleeve of ac fan of the present utility model;
Fig. 6 is the interior jump ring structural representation in the ac fan of the present utility model.
Reference character is expressed as among the figure: 1-leaf blade, 2-rotor, 21-shaft, 3-spring, 41,42,61,62-vibration proof cardboard, 51-upper bearing (metal), 52-lower bearing, the last interior jump ring of 71-, the down interior jump ring of 72-, 8-stator coil, 9-stator, 91-center hole, 10-bearing setting sleeve, 101-central axis hole, 102-boss, 103-groove, 104-positioning spiro pit, 11-axle jump ring, 12-insulation packing paper, 13-base, 14-screw.
Embodiment
Fig. 3 and Fig. 4 are the structural representations of ac fan of the present utility model, described ac fan comprises base 13, rotor 2, be located at the shaft 21 on the rotor 2, the leaf blade 1 of fixedlying connected with rotor 2, stator 9, be located at the stator coil 8 on the stator, with the bearing setting sleeve 10 of center hole 91 press fits of described stator 9 and be located at upper ball bearing 51 and lower ball bearing 52 in the described bearing setting sleeve 10, wherein, referring to Fig. 5, the copper sheathing that described bearing setting sleeve 10 is formed in one, described copper sheathing is the cylindrical body with central axis hole 101, be provided with boss 102 at a described cylindrical end around described cylindrical body outer surface, be respectively arranged with two grooves 103 up and down at described cylindrical internal surface apart from the position that described cylindrical two end faces are suitable for described upper ball bearing 51 and lower ball bearing 52 embeddings, on the described boss 102 of described bearing setting sleeve 10, evenly be provided with 3 positioning spiro pits 104, in addition, described two groove 103 places of described bearing setting sleeve 10 also be provided be used to snap in described two grooves 103 and be used to support described upper ball bearing 51 and lower ball bearing 52 in jump ring 71 and down in jump ring 72, described upper ball bearing 51 and described between the jump ring 71 and at described lower ball bearing 52 and describedly be respectively equipped with red cardboard between the jump ring 72 in following.In most preferred embodiment, be respectively equipped with vibration proof cardboard 41 and vibration proof cardboard 42 towards the end face of leaf blade 1 with at described lower bearing 52 towards the end face of base 13 at described upper bearing (metal) 51.Used vibration proof cardboard is red cardboard in the utility model, this material is promptly available on market, it has good electrical properties and mechanical property under normal conditions, the component of insulation system in the motor that is usually used in electrical properties and mechanical property are had relatively high expectations, the electrical equipment, and the claimant finds that it also has good vibration proof performance.
As can be seen from Figure 2, the structure member of ac fan of the present utility model is respectively leaf blade 1 from top to bottom, rotor 2, shaft 21, spring 3, vibration proof cardboard 41, upper ball bearing 51, vibration proof cardboard 61, jump ring 71 in going up, stator 9 and stator coil 8, bearing setting sleeve 10, jump ring 72 down, vibration proof cardboard 62, lower ball bearing 52, vibration proof cardboard 42, axle jump ring 11, insulation packing paper 12, base 13 and screw 14 are when this fan of assembling, jump ring 71 and down interior jump ring 72 snap in two grooves 103 up and down of described bearing setting sleeve 10 respectively in will going up earlier, then with vibration proof cardboard 61 and 62 and upper ball bearing 51 and following roller bearing 52 embed respectively successively in the bearing setting sleeve 10, at this moment the bearing setting sleeve 10 that assembles is passed the center hole 91 of described stator 9, the shaft 21 with described rotor 2 is an axle then, successively each parts is penetrated described shaft 21, matching to be fixed with the positioning spiro pit 104 of described bearing setting sleeve 10 by screw 14 at last promptly obtains ac fan of the present utility model.
Need to prove that bearing setting sleeve 10 of the present utility model can also be made by other metal, as aluminium, steel etc.In addition, the leaf blade 1 in the utility model can be metal (for example iron), also can be that plastics are made.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. ac fan, comprise base (13), rotor (2), the leaf blade (1) of fixedlying connected with rotor (2), stator (9), bearing setting sleeve (10) with center hole (91) press fit of described stator (9), and be located at upper bearing (metal) (51) and lower bearing (52) in the described bearing setting sleeve (10), it is characterized in that: described bearing setting sleeve (10) is integrated, it is for having the cylindrical body of central axis hole (101), be provided with boss (102) at a described cylindrical end around described cylindrical body outer surface, be suitable for the position that described upper bearing (metal) (51) and lower bearing (52) embed at described cylindrical internal surface apart from described cylindrical two end faces and be respectively arranged with two grooves (103) up and down, be respectively equipped with in described two grooves (103) up and down and be used to snap in described groove (103) and be used to support jump ring (71) and following interior jump ring (72) in the going up of described upper bearing (metal) (51) and lower bearing (52).
2. ac fan according to claim 1 is characterized in that: be provided with positioning means between the described seat end (13) and described bearing setting sleeve (10).
3. ac fan according to claim 2 is characterized in that: evenly be provided with a plurality of positioning spiro pits (104) on the described boss (102) of described bearing setting sleeve (10).
4. according to any described ac fan among the claim 1-3, it is characterized in that: described bearing setting sleeve (10) is a metal processing piece.
5. ac fan according to claim 4 is characterized in that: described bearing setting sleeve (10) is a copper spare.
6. according to any described ac fan in claim 1-3 or 5, it is characterized in that: described upper bearing (metal) (51) and lower bearing (52) are ball bearing.
7. ac fan according to claim 1 is characterized in that: be provided with vibration proof cardboard (61) between jump ring on described (71) and the described upper bearing (metal) (51).
8. ac fan according to claim 1 is characterized in that: be provided with vibration proof cardboard (62) between jump ring (72) and the described lower bearing (52) under described.
9. according to claim 7 or 8 described ac fans, it is characterized in that: be respectively equipped with vibration proof cardboard (41) and/or vibration proof cardboard (42) towards the end face of leaf blade (1) and/or at described lower bearing (52) towards the end face of base (13) at described upper bearing (metal) (51).
10. according to claim 7 or 8 described ac fans, it is characterized in that: described vibration proof cardboard (61) and vibration proof cardboard (62) are red cardboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201671173U CN201475006U (en) | 2009-07-31 | 2009-07-31 | AC fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201671173U CN201475006U (en) | 2009-07-31 | 2009-07-31 | AC fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475006U true CN201475006U (en) | 2010-05-19 |
Family
ID=42411252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201671173U Expired - Fee Related CN201475006U (en) | 2009-07-31 | 2009-07-31 | AC fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062111A (en) * | 2010-12-02 | 2011-05-18 | 苏州聚力电机有限公司 | Composite structure of radiator fan and molding method thereof |
| CN104712590A (en) * | 2013-12-17 | 2015-06-17 | 奇鋐科技股份有限公司 | Fan shock-proof structure and fan with fan shock-proof structure |
-
2009
- 2009-07-31 CN CN2009201671173U patent/CN201475006U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062111A (en) * | 2010-12-02 | 2011-05-18 | 苏州聚力电机有限公司 | Composite structure of radiator fan and molding method thereof |
| CN102062111B (en) * | 2010-12-02 | 2012-11-21 | 苏州聚力电机有限公司 | Composite structure of radiator fan and molding method thereof |
| CN104712590A (en) * | 2013-12-17 | 2015-06-17 | 奇鋐科技股份有限公司 | Fan shock-proof structure and fan with fan shock-proof structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140731 |
|
| EXPY | Termination of patent right or utility model |