CN1055352C - DC brushless fan - Google Patents
DC brushless fan Download PDFInfo
- Publication number
- CN1055352C CN1055352C CN95107729A CN95107729A CN1055352C CN 1055352 C CN1055352 C CN 1055352C CN 95107729 A CN95107729 A CN 95107729A CN 95107729 A CN95107729 A CN 95107729A CN 1055352 C CN1055352 C CN 1055352C
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- Prior art keywords
- bearing
- housing
- cover
- bearing holder
- fan
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- 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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- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 22
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 56
- 239000011324 bead Substances 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A direct current brushless fan, it mainly sets up a bearing bracket, there are silicon steel sheets outside the bearing bracket, set up a bearing housing in the bearing bracket, the appropriate place of the inboard surface of bearing bracket forms several wedge blocks, the bearing housing corresponds to the wedge block and forms the straight flute, the wedge block divides the inner space of bearing housing into upper, lower space, can support to set up the self-lubricating bearing or ball bearing, make silicon steel sheet, bearing bracket, bearing housing and bearing restrict and cooperate each other, position every component in the appropriate position, wherein the above-mentioned bearing housing and bearing bracket are formed separately, can guarantee the dimensional accuracy of the bearing housing; the invention solves the problems of high rejection rate and high production cost of the traditional direct current brushless fan.
Description
The present invention relates to a kind of brush DC fan, mainly be that bearing pedestal medial surface at its framework is provided with the bearing holder (housing, cover) that can install self-lubricating bearing or ball bearing, the bearing holder (housing, cover) that dimensional requirement is higher separates moulding, with the accuracy of guaranteeing to process, to reduce waste product, reduce production costs.
Present brush-less fan is widely used in the heat abstractor, see computer such as the most normal now, can produce heat at the internal structure that starts aft engine, need install a radiator fan additional, reducing temperature works in normal temperature to guarantee computer, reduce failure rate, therefore brush-less fan plays a part very important, but traditional brush-less fan, be in the bearing pedestal of fan frame, bearing to be set, the structure of its bearing pedestal, ball-bearing housing as shown in Figure 5 (seeing Taiwan patent 79213967 " DC Brushless Motor ") and self-lubricating bearing seat (seeing Taiwan patent 81217778 " the oil ring improvement of cooling fan bearing ") shown in Figure 6, be formed centrally a circular hole 71 in the bearing pedestal 70 among Fig. 5, circular hole 71 is a through hole, highly locate to form the less bulge loop of internal diameter 72 making an appointment with half, bulge loop 72 is also divided into the inner space of circular hole 71, following space, for placing bearing, as shown in Figure 6, the basic structure of its bearing pedestal is identical with Fig. 5, but the then necessary close-fitting of self-lubricating bearing is in bulge loop 73, so the length of bulge loop 73 is length than bulge loop 72, its relative position also can not be identical, therefore bearing pedestal 70 need have two kinds of patterns, wherein a kind of pattern as shown in Figure 5, be that ball bearing is set, the length of bulge loop 72 is shorter, in order to cut apart two bearings; Another kind of pattern as shown in Figure 6, is that the length of bulge loop 73 is longer, same close-fitting self-lubricating bearing.
But because of the bearing pedestal 70 of above-mentioned two kinds of patterns is made in the mode of ejection formation by plastics, it no matter is making precision because of mould, or mould is after long-term the use, or human factor (excessive) as penetrating pressure, cause the mould abrasion, and make movable mold and fixed die when mold closing, produce skew, and make the circular hole 71 of the bearing pedestal 70 after the moulding produce stepped at minute mould place, cause circular hole 71 on, following space off-centre, bearing is installed in the space, two place up and down of circular hole 71, and make the endoporus of two bearings produce deviation, so the fan axle is installed in the endoporus of bearing, can produce serious friction with the brearing bore wall, or because of the abrasion of mould make the fan axle produce too tight or too loose cooperating with bearing, and the life-span of causing finished product inferior or reducing fan.
Be formed in one because of bearing pedestal 70 and fan frame again, the circular hole 71 of bearing pedestal is about the external diameter of bearing at the internal diameter of opening part, when the assembling bearing, be to belong to closely cooperating, need bearing be forced with external force and be pressed in the circular hole 71, bearing firmly is fixed in the circular hole 71, do not rotate, therefore in manufacture process, each bearing pedestal 70 all needs to have the high circular hole of a dimensional accuracy 71, just can form with bearing to cooperate closely, but because of fan frame and bearing pedestal 70 are formed in one, in case when therefore the size of circular hole 71 produced error, whole fan frame just can't use, so production cost improves relatively, the group mode of silicon steel sheet is to belong to closely cooperating in addition, with its packing, therefore the silicon steel sheet that is forced into can be suppressed bearing, and influences the use of bearing with external force.
Main purpose of the present invention is to provide a kind of part processing precision less demanding brush DC fan, its be between the bearing pedestal of fan frame and bearing, add a rubber-like bearing holder (housing, cover) and since bearing holder (housing, cover) separate making with framework, so framework needn't the high-precision requirement of tool, reduce the generation of framework fraction defective and reduce production costs, its bearing holder (housing, cover) is arranged on the bearing pedestal medial surface, the appropriate location of bearing pedestal medial surface is provided with several voussoirs, the corresponding voussoir of bearing holder (housing, cover) position extends upward several straight troughs in the bottom, and the top of bearing holder (housing, cover) forms outward extending bead, one packing ring with breach is set between bead and bearing pedestal top, bearing holder (housing, cover) utilizes the blocking of bearing pedestal voussoir, make bearing holder (housing, cover) in bearing pedestal, not produce rotation, after assembling, the bearing pedestal of framework, bearing holder (housing, cover) and bearing produce the effect of mutual containing, make two bearings symmetry and concentric mutually.
The brush DC fan that provides a kind of bearing pedestal to separate with bearing holder (housing, cover) is provided two of purpose of the present invention, voussoir wherein is divided into upper and lower space with the inside of bearing holder (housing, cover), mix use for installing self-lubricating bearing, ball bearing or both, the axle with fan frame is installed in the bearing again.
The brush DC fan that provides a kind of passing rate of processing high is provided three of purpose of the present invention, because bearing pedestal separates manufacturing with bearing holder (housing, cover), and compound mode is simple and easy between the two, and substandard products can be stopped the additional waste that causes because of recovery absolutely according to original quality recovery.
The brush DC fan that provides a kind of cost low is provided four of purpose of the present invention, it also is applicable to self-lubricating bearing, therefore can improve the application function of self-lubricating bearing, because the cost of self-lubricating bearing is low than ball bearing, so the present invention can make that the application of self-lubricating bearing is more extensive, and more cheap manufacturing cost is provided.
For achieving the above object, the present invention takes following technical scheme:
Brush DC fan of the present invention comprises fan frame, in the center of fan frame one bearing pedestal is set, and the bearing of air feed fan axle installing is set in the bearing pedestal, and the sheathed silicon steel sheet in the bearing pedestal outside is characterized in that:
Described bearing pedestal medial surface forms several voussoirs, at medial surface installing bearing holder (housing, cover), be formed centrally the circular hole of always wearing in the bearing holder (housing, cover), the corresponding voussoir of bearing holder (housing, cover) position extends upward several straight troughs by the bottom, the top of the bearing holder (housing, cover) bead that stretches out, voussoir will be divided in the bearing holder (housing, cover) can be for the upper and lower space of installing bearing.
Described brush DC fan, its feature also is: described bearing holder (housing, cover) forms the upper and lower space that can install self-lubricating bearing.
Described brush DC fan, its feature also is: the last space of described bearing holder (housing, cover) is provided with ball bearing, is equiped with packing ring and ball bearing in the following space.
Described brush DC fan, its feature also is: the space is provided with ball bearing on described bearing holder (housing, cover), and following space is provided with self-lubricating bearing.
Described brush DC fan, its feature also is: the space is provided with self-lubricating bearing on described bearing holder (housing, cover), and following space is provided with packing ring and ball bearing.
Described brush DC fan, its feature also is: the outer periphery of described bearing pedestal is equipped with the raised line of silicon steel sheet location, one packing ring is set above silicon steel sheet, between described bearing holder (housing, cover) bead and silicon steel sheet, utilizes the bead restriction silicon steel sheet of bearing holder (housing, cover) to move up and down.
The present invention and traditional fan frame comparison have following effect:
1. reduce production costs, its bearing holder (housing, cover) separates moulding with bearing pedestal, can guarantee the accuracy to size of bearing pedestal, the rate of reducing the number of rejects and seconds, even and produce the bearing holder (housing, cover) that there is error in the circular hole aperture, only need give up bearing holder (housing, cover), fan frame with bearing pedestal still can use, and reduces production costs.
2. moulding easily and the stability of mould high, because of the medial surface of bearing pedestal is provided with a bearing holder (housing, cover), the independent moulding of bearing holder (housing, cover), interior circular hole is by an axle center moulding of mould, can guarantee the concentricity of circular hole, die parting line is not arranged on the circular hole place of bearing holder (housing, cover), and does Precision Machining because of its volume I, make the interior sidewall surface of bearing holder (housing, cover) form striped, increase blocking ability with bearing.
3. only need a kind of bearing pedestal and bearing holder (housing, cover) of pattern, can assemble self-lubricating bearing or ball bearing, when assembling self-lubricating bearing or ball bearing, only need the space up and down that self-lubricating bearing or ball bearing are packed in the bearing holder (housing, cover) is got final product, also self-lubricating bearing and ball bearing can be used.
4. to be the outside that is set in bearing pedestal do not produce rotation by raised line is fixing to silicon steel sheet, and utilize the bead restriction silicon steel sheet of bearing holder (housing, cover) to move up and down, silicon steel sheet is positioned at the outside of bearing pedestal, and its silicon steel sheet and bearing pedestal are that the mode that adopts pine to join makes up, and make assembling more convenient.
Further specify specific structural features of the present invention and purpose below in conjunction with accompanying drawing.
Brief Description Of Drawings:
Fig. 1 is that fan frame of the present invention is provided with schematic diagram.
Fig. 2 is an element decomposing schematic representation of the present invention.
Fig. 3 is the floor map that the present invention installs self-lubricating bearing.
Fig. 4 is the floor map that the present invention installs ball bearing.
Fig. 5 is the floor map of the bearing pedestal of conventional fan framework.
Fig. 6 is the floor map of the bearing pedestal of another conventional fan framework.
As shown in Figure 1, it is that fan frame of the present invention is provided with schematic diagram, find out that by knowing among the figure the present invention is installed in the bearing pedestal 20 at framework 10 centers, its element decomposing schematic representation, as shown in Figure 2, bearing pedestal 20 peripheral formation stage shapes, and the superiors in the periphery are provided with several raised lines 21, the appropriate location of bearing pedestal 20 medial surfaces is provided with several voussoirs that protrudes to the inside 22, forms a fastening part 23 at the medial surface of bearing pedestal 20 Lower Halves.
The medial surface of fitted shaft bearing 20 is provided with a bearing holder (housing, cover) 40, the center of bearing holder (housing, cover) 40 is provided with a circular hole that runs through 43, bearing holder (housing, cover) 40 is upwards formed the straight trough 42 of several corresponding voussoirs 22 by the bottom, and form an outward extending bead 41 in bearing holder (housing, cover) 40 tops, bead 41 from top to bottom forms several short slots 411, utilize the setting of straight trough 42 and short slot 411 to make bearing holder (housing, cover) 40 have elasticity, the bottom of bearing holder (housing, cover) 40 is provided with several outward extending hook portions 44.
The upright program of group, be earlier circuit board 60 to be set in bearing pedestal 20 outsides, on the circuit board 60 circuit can be set, it shown in the figure circuit board plate body that circuit is not set as yet, again the support body 31 of silicon steel sheet 30 is set in the periphery of bearing pedestal 20, then the raised line 21 of bearing pedestal 20 peripheries can be positioned at silicon steel sheet 30 on the framework 10, can not rotate, place packing ring 32 again on support body 31, refill and establish bearing holder (housing, cover) 40 in bearing pedestal 20, the bead 41 restriction silicon steel sheets 30 of bearing holder (housing, cover) 40 move up and down, with silicon steel sheet 30 and support body 31 location.
Please cooperate referring to Fig. 2 and shown in Figure 3, it is the floor map that the present invention installs ball bearing, by knowing the situation of finding out that the present invention assembles among the figure, bearing holder (housing, cover) 40 is arranged on bearing pedestal 20 inboards, straight trough 42 corresponding voussoirs 22 are provided with, packing ring 32 is between the bead 41 and half a step steel disc 30 tops of bearing holder (housing, cover) 40, bearing holder (housing, cover) 40 is fixed on bearing pedestal 20 inboards, do not produce rotation, and voussoir 22 also protrudes in bearing holder (housing, cover) 40 inboards bearing holder (housing, cover) 40 inside is divided into, following two spaces, last, two ball bearings 50 are set respectively in the following space, ball bearing 50 is arranged in the bearing holder (housing, cover) 40, rubber-like bearing holder (housing, cover) 40 can be strutted a little, make bearing holder (housing, cover) 40 more tight, and several hook portions 44 on 40 ends of bearing holder (housing, cover) tops, be held in the blocking part 23 of bearing pedestal 20 with cooperating of bearing pedestal 20, afterwards the axle 531 of fan blade 53 is passed a spring 52 earlier, packing ring 54 passes a ball bearing 50 and a packing ring 55 again, then pulls fixing with clasp 56 folders.
As shown in Figure 4, it installs the floor map of self-lubricating bearing for the present invention, as above-mentioned bearing holder (housing, cover) 40 is installed in the bearing pedestal 20, to be divided in the bearing holder (housing, cover) 40 by voussoir 22, following space, last, in the following space self-lubricating bearing 51 is set, and the top of self-lubricating bearing 51 is provided with an oil ring 57 up, make between two self-lubricating bearings 51, form a grease chamber 58, self-lubricating bearing 51 is set also can a little outwards strut bearing holder (housing, cover) 40, make bearing holder (housing, cover) 40 more tight, and several hook portions 44 on 40 ends of bearing holder (housing, cover) tops, be held in the fastening part 23 of bearing pedestal 20 with cooperating of bearing pedestal 20.
Wherein self-lubricating bearing 51 also can be used with ball bearing 50, and self-lubricating bearing 51 or ball bearing 50 are installed in the bearing holder (housing, cover) 40, makes it to become another combination of the design.
Claims (6)
1, a kind of brush DC fan comprises fan frame, in the center of fan frame one bearing pedestal is set, and the bearing of air feed fan axle installing is set in the bearing pedestal, and the sheathed silicon steel sheet in the bearing pedestal outside is characterized in that:
Described bearing pedestal medial surface forms several voussoirs, at medial surface installing bearing holder (housing, cover), be formed centrally the circular hole of always wearing in the bearing holder (housing, cover), the corresponding voussoir of bearing holder (housing, cover) position extends upward several straight troughs by the bottom, the top of the bearing holder (housing, cover) bead that stretches out, voussoir will be divided in the bearing holder (housing, cover) can be for the upper and lower space of installing bearing.
2, brush DC fan according to claim 1 is characterized in that: described bearing holder (housing, cover) forms the upper and lower space that can install self-lubricating bearing.
3, brush DC fan according to claim 1 is characterized in that: the last space of described bearing holder (housing, cover) is provided with ball bearing, is equiped with packing ring and ball bearing in the following space.
4, brush DC fan according to claim 1, it is characterized in that: the space is provided with ball bearing on described bearing holder (housing, cover), and following space is provided with self-lubricating bearing.
5, brush DC fan according to claim 1, it is characterized in that: the space is provided with self-lubricating bearing on described bearing holder (housing, cover), and following space is provided with packing ring and ball bearing.
6, brush DC fan according to claim 1, it is characterized in that: the outer periphery of described bearing pedestal is equipped with the raised line of silicon steel sheet location, one packing ring is set above silicon steel sheet, between described bearing holder (housing, cover) bead and silicon steel sheet, utilizes the bead restriction silicon steel sheet of bearing holder (housing, cover) to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107729A CN1055352C (en) | 1995-06-30 | 1995-06-30 | DC brushless fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95107729A CN1055352C (en) | 1995-06-30 | 1995-06-30 | DC brushless fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1139738A CN1139738A (en) | 1997-01-08 |
| CN1055352C true CN1055352C (en) | 2000-08-09 |
Family
ID=5076428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95107729A Expired - Fee Related CN1055352C (en) | 1995-06-30 | 1995-06-30 | DC brushless fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1055352C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475143A (en) * | 2013-09-30 | 2013-12-25 | 苏州双航机电有限公司 | Motor end cover |
| EP3664258A1 (en) * | 2018-12-04 | 2020-06-10 | Hilti Aktiengesellschaft | Brushless electric motor |
| CN110212683A (en) * | 2019-02-21 | 2019-09-06 | 绍兴市上虞良品电机有限公司 | Motor |
| WO2021077373A1 (en) * | 2019-10-24 | 2021-04-29 | 深圳市大疆创新科技有限公司 | Electric motor, power device, movable platform, and method for mounting electric motor |
| CN112217322B (en) * | 2020-01-20 | 2022-03-01 | 江苏鼎智智能控制科技股份有限公司 | Stator assembly and injection molding stepper motor using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS625561A (en) * | 1985-06-29 | 1987-01-12 | Furukawa Electric Co Ltd:The | Magnesium battery |
| CN2103216U (en) * | 1991-09-29 | 1992-04-29 | 洪银树 | Stator structure of brushless DC motor |
| US5166565A (en) * | 1988-10-07 | 1992-11-24 | Fanuc Ltd. | Hold structure for bearing in electrical motor |
| CN1097906A (en) * | 1993-06-08 | 1995-01-25 | 德昌电机股份有限公司 | The bearing grip slipper of miniature motor |
-
1995
- 1995-06-30 CN CN95107729A patent/CN1055352C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS625561A (en) * | 1985-06-29 | 1987-01-12 | Furukawa Electric Co Ltd:The | Magnesium battery |
| US5166565A (en) * | 1988-10-07 | 1992-11-24 | Fanuc Ltd. | Hold structure for bearing in electrical motor |
| CN2103216U (en) * | 1991-09-29 | 1992-04-29 | 洪银树 | Stator structure of brushless DC motor |
| CN1097906A (en) * | 1993-06-08 | 1995-01-25 | 德昌电机股份有限公司 | The bearing grip slipper of miniature motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1139738A (en) | 1997-01-08 |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20000809 |