CN210127956U - Ultra-thin fan structure - Google Patents
Ultra-thin fan structure Download PDFInfo
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- CN210127956U CN210127956U CN201920639564.8U CN201920639564U CN210127956U CN 210127956 U CN210127956 U CN 210127956U CN 201920639564 U CN201920639564 U CN 201920639564U CN 210127956 U CN210127956 U CN 210127956U
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- circuit board
- fan
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- shaft sleeve
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Abstract
The utility model discloses an ultra-thin fan structure, which comprises a circuit board, rotor blades, a magnet and a stator coil, wherein the stator coil is fixedly arranged on the circuit board, the rotor blades can be rotatably arranged above the circuit board, the magnet is fixedly arranged on the rotor blades and corresponds to the stator coil, and the circuit board is provided with an installation structure for fixedly connecting the fan with external equipment, the utility model designs an installation structure for being installed with the external equipment on the circuit board, and the circuit board directly forms a bottom plate of a fan frame, so that the thickness of the fan is reduced by one thickness of the bottom plate, the overall height of the fan is effectively reduced, the thinning design of the electronic equipment is facilitated, meanwhile, the bottom plate part of the frame body is removed, the manufacturing cost of the fan is also reduced, the shaft sleeve is integrally formed on the circuit board by the mode of in-mold injection, is convenient for processing and manufacturing.
Description
Technical Field
The utility model relates to a fan, in particular to ultra-thin fan structure.
Background
All need install the fan in the electronic equipment and dispel the heat, present fan structure is all installed the circuit board on frame structure 15's bottom surface, is connected the installation that realizes the fan through frame structure and external equipment, and the fan height of this kind of structure is great, has restricted electronic equipment's thickness, is difficult to satisfy the design demand that electronic equipment becomes slim day by day.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides an ultra-thin fan structure, this ultra-thin fan structure has effectively reduced the height of fan, is favorable to electronic equipment's slim design.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides an ultra-thin fan structure, includes circuit board, rotor flabellum, magnet and stator coil, stator coil fixed mounting is on the circuit board, and rotor flabellum can the pivoted install in the circuit board top, and magnet fixed mounting corresponds the setting on rotor flabellum and with stator coil, be equipped with the mounting structure who is used for fan and external equipment fixed connection on the circuit board.
As a further improvement, the circuit board is fixed all around and is formed with the enclosure structure, and rotor flabellum, magnet and stator coil are located the space of enclosure structure cladding.
As a further improvement, the utility model is also provided with an upper cover, the upper cover is fixedly arranged on the upper side of the enclosing wall structure, and the upper cover is shielded on the upper side of the blade edge of the rotor fan blade.
As a further improvement, be formed with the mounting hole on the circuit board, the mounting hole internal fixation inlays and is equipped with the axle sleeve, and the bearing is installed to the axle sleeve inboard, is equipped with the axle center in the bearing, and rotor flabellum fixed mounting is on the axle center.
As a further improvement, the axle sleeve is on the circuit board through the integrated into one piece that moulds plastics, and the axle sleeve outside is formed with the radial bulge loop of one end, is formed with annular joint portion of moulding plastics on the circuit board, should mould plastics and be formed with the U-shaped groove dress structure of indent on the joint portion inside wall, and the radial bulge loop in the axle sleeve outside is just fixed to be inlayed in the U-shaped groove dress structure on the circuit board.
As a further improvement, the axle sleeve is upper end opening lower extreme confined metal sleeve, and axle sleeve outside lower extreme is formed with the step portion of diameter shrink, the step portion of axle sleeve outside lower extreme is fixed to be inserted in the mounting hole of locating the circuit board, and the step face of axle sleeve lower extreme step portion tightly supports circuit board side surface on.
As a further improvement of the utility model, be equipped with the wear pad on the axle sleeve bottom surface, bearing inner circle and axle center lower extreme contact wear pad surface.
As the utility model discloses a further improvement, the axle sleeve lower extreme forms the first stair structure that the upper end diameter is greater than the lower extreme diameter, and wear pad inlays and locates in the one end that first stair structure diameter is little, and the bearing is located the one end that first stair structure diameter is big, and the outer lane of bearing tightly supports the step face of first stair structure.
As the utility model discloses a further improvement, the axle sleeve upper end forms the second stair structure that the upper end diameter is greater than the lower extreme diameter, and second stair structure upper end inboard is fixed to be inlayed and is equipped with solid fixed ring, gu fixed ring tightly supports the bearing up end.
As a further improvement, rotor blade is formed with inner groovy structure towards circuit board one side, and magnet passes through to seal magnetic ring fixed mounting in rotor blade's inner groovy structure.
The utility model has the advantages that: the utility model discloses designed the mounting structure who is used for with external equipment installation on the circuit board, the circuit board directly forms the bottom plate of fan frame for the fan has reduced a bottom plate thickness, has effectively reduced the whole height of fan, is favorable to the slim design of electronic equipment, simultaneously, has got rid of framework bottom plate part, has still reduced fan cost of manufacture, and the axle sleeve is through mode integrated into one piece of moulding plastics in the mould on the circuit board, firm in connection, the equipment precision is high, the manufacturing of being convenient for.
Drawings
FIG. 1 is a schematic diagram of a prior art construction;
FIG. 2 is a first schematic diagram of the present invention;
FIG. 3 is an enlarged view of the connection portion of the circuit board and the shaft sleeve in FIG. 2;
FIG. 4 is a schematic diagram of a second structure of the present invention;
fig. 5 is an enlarged view of a joint portion of the circuit board and the shaft sleeve in fig. 4 fixed by welding.
Detailed Description
Example (b): the utility model provides an ultra-thin fan structure, includes circuit board 1, rotor blade 2, magnet 3 and stator coil 4, stator coil 4 fixed mounting is on circuit board 1, and rotor blade 2 can the pivoted install in 1 top of circuit board, and 3 fixed mounting of magnet correspond the setting on rotor blade 2 and with stator coil 4, be equipped with the mounting structure who is used for fan and external equipment fixed connection on circuit board 1.
The periphery of the circuit board 1 is also fixedly provided with an enclosing wall structure 5, and the rotor fan blades 2, the magnets 3 and the stator coils 4 are positioned in a space covered by the enclosing wall structure 5. Enclosure structure 5 can protect rotor blade 2, magnet 3 and stator coil 4, avoids damaging, still forms the air runner in enclosure structure 5, is favorable to leading the air current, strengthens external equipment's radiating effect.
The fan blade is also provided with an upper cover 6, the upper cover 6 is fixedly arranged on the upper side of the enclosing wall structure 5, and the upper cover 6 is shielded on the upper side of the edge of the blade 13 of the rotor blade. The upper cover 6 can carry out abundant protection to the blade of flabellum, avoids its rotation in-process to damage, avoids its high-speed rotation to cut foreign matter simultaneously, and the upper cover 6 can be installed on the bounding wall through physical methods such as injection moulding or through screws, glue, and the upper cover 6 forms the air runner with the bounding wall structure 5 jointly, further strengthens the guide effect of air runner.
The fan blade mounting structure is characterized in that a mounting hole is formed in the circuit board, a shaft sleeve 7 is fixedly embedded in the mounting hole, a bearing 8 is mounted on the inner side of the shaft sleeve 7, an axle center 9 is arranged in the bearing 8, and the rotor fan blade 2 is fixedly mounted on the axle center 9. The rotor fan blade 2 is arranged through the shaft sleeve 7, the bearing 8 and the shaft center 9, and the rotor fan blade 2 is ensured to rotate smoothly.
The shaft sleeve 7 is integrally formed on the circuit board 1 through injection molding, a radial convex ring at one end is formed on the outer side of the shaft sleeve 7, an annular injection molding combination part 14 is formed on the circuit board 1, an inwards concave U-shaped groove installation structure is formed on the inner side wall of the injection molding combination part, and the radial convex ring on the outer side of the shaft sleeve 7 is just fixedly embedded in the U-shaped groove installation structure on the circuit board 1. Axle sleeve 7 and circuit board 1 are through moulding plastics integrated into one piece fixed connection, firm in connection to it is spacing to set up radial bulge loop realization axial on axle sleeve 7, guarantees the equipment precision.
The shaft sleeve 7 is a metal sleeve with an opening at the upper end and a closed lower end, a step part with a contracted diameter is formed at the lower end of the outer side of the shaft sleeve 7, the step part at the lower end of the outer side of the shaft sleeve 7 is fixedly inserted into the mounting hole of the circuit board 1, and the step surface of the step part at the lower end of the shaft sleeve 7 tightly abuts against the upper side surface of the circuit board 1. The shaft sleeve 7 and the circuit board 1 can be fixed by welding, interference fit, buckling and fixing through a buckle structure and fixing through a connecting piece.
The bottom surface of the shaft sleeve 7 is provided with a wear-resistant sheet 10, and the inner ring of the bearing 8 and the lower end of the shaft center 9 contact the surface of the wear-resistant sheet 10. Through setting up wear pad 10 and bearing 8 inner circle and axle center 9 contact, avoid bearing 8 inner circle and axle center 9 rotatory time wearing and tearing axle sleeve 7 bottom surface, be favorable to improving whole life.
The lower end of the shaft sleeve 7 forms a first step structure with the diameter of the upper end larger than that of the lower end, the wear-resistant sheet 10 is embedded in one end with the small diameter of the first step structure, the bearing 8 is located in one end with the large diameter of the first step structure, and the outer ring of the bearing 8 tightly supports against the step surface of the first step structure. The first step structure is used for installing and limiting the wear-resistant plate 10 and the bearing 8, so that the installation precision is guaranteed.
The upper end of the shaft sleeve 7 forms a second step structure with the upper end diameter larger than the lower end diameter, a fixing ring 11 is fixedly embedded on the inner side of the upper end of the second step structure, and the fixing ring 11 tightly supports against the upper end face of the bearing 8. The bearing 8 is axially limited and mounted through the fixing ring 11, and the structure is convenient to mount and dismount.
An inner groove structure is formed on one side, facing the circuit board, of the rotor fan blade, and the magnet 3 is fixedly installed in the inner groove structure of the rotor fan blade through the magnet sealing ring 12. This structure facilitates stable positioning of the magnet 3.
Claims (10)
1. An ultra-thin fan structure which characterized in that: including circuit board (1), rotor flabellum (2), magnet (3) and stator coil (4), stator coil fixed mounting is on the circuit board, and rotor flabellum can the pivoted install in the circuit board top, and magnet fixed mounting corresponds the setting on rotor flabellum and with stator coil, be equipped with the mounting structure who is used for fan and external equipment fixed connection on the circuit board.
2. The ultra-thin fan structure of claim 1, wherein: and a wall structure (5) is fixedly formed around the circuit board, and the rotor fan blades, the magnets and the stator coils are positioned in a space coated by the wall structure.
3. The ultra-thin fan structure as claimed in claim 1 or 2, wherein: the upper cover (6) is fixedly arranged on the upper side of the enclosing wall structure and covers the upper side of the edge of the blade (13) of the rotor fan blade.
4. The ultra-thin fan structure of claim 1, wherein: the fan blade mounting structure is characterized in that a mounting hole is formed in the circuit board, a shaft sleeve (7) is fixedly embedded in the mounting hole, a bearing (8) is mounted on the inner side of the shaft sleeve, an axle center (9) is arranged in the bearing, and the rotor fan blades are fixedly mounted on the axle center.
5. The ultra-thin fan structure of claim 4, wherein: the shaft sleeve is integrally formed on the circuit board in an injection molding mode, a radial convex ring at one end is formed on the outer side of the shaft sleeve, an annular injection molding combination part (14) is formed on the circuit board, an inwards concave U-shaped groove installation structure is formed on the inner side wall of the injection molding combination part, and the radial convex ring on the outer side of the shaft sleeve is just fixedly embedded in the U-shaped groove installation structure on the circuit board.
6. The ultra-thin fan structure of claim 4, wherein: the shaft sleeve is a metal sleeve with an opening at the upper end and a closed lower end, a step part with a contracted diameter is formed at the lower end of the outer side of the shaft sleeve, the step part at the lower end of the outer side of the shaft sleeve is fixedly inserted into the mounting hole of the circuit board, and the step surface of the step part at the lower end of the shaft sleeve tightly abuts against the upper side surface of the circuit board.
7. The ultra-thin fan structure of claim 4, wherein: the bottom surface of the shaft sleeve is provided with a wear-resistant plate (10), and the bearing inner ring and the lower end of the shaft center contact the surface of the wear-resistant plate.
8. The ultra-thin fan structure of claim 7, wherein: the bearing is positioned in the end with the large diameter of the first step structure, and the outer ring of the bearing tightly supports against the step surface of the first step structure.
9. The ultra-thin fan structure of claim 7, wherein: the shaft sleeve upper end forms the second stair structure that the upper end diameter is greater than the lower extreme diameter, and second stair structure upper end inboard is fixed to be inlayed and is equipped with solid fixed ring (11), gu fixed ring supports the bearing up end tightly.
10. The ultra-thin fan structure of claim 1, wherein: an inner groove structure is formed on one side, facing the circuit board, of the rotor fan blade, and the magnet is fixedly installed in the inner groove structure of the rotor fan blade through the magnet sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639564.8U CN210127956U (en) | 2019-05-07 | 2019-05-07 | Ultra-thin fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920639564.8U CN210127956U (en) | 2019-05-07 | 2019-05-07 | Ultra-thin fan structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210127956U true CN210127956U (en) | 2020-03-06 |
Family
ID=69662694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920639564.8U Active CN210127956U (en) | 2019-05-07 | 2019-05-07 | Ultra-thin fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210127956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005625A (en) * | 2019-05-07 | 2019-07-12 | 苏州顺福利智能科技有限公司 | Super thin fan structure |
-
2019
- 2019-05-07 CN CN201920639564.8U patent/CN210127956U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005625A (en) * | 2019-05-07 | 2019-07-12 | 苏州顺福利智能科技有限公司 | Super thin fan structure |
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