CN220234289U - Riveting structure of fan middle tube and motor assembly and cooling fan comprising same - Google Patents
Riveting structure of fan middle tube and motor assembly and cooling fan comprising same Download PDFInfo
- Publication number
- CN220234289U CN220234289U CN202321367858.2U CN202321367858U CN220234289U CN 220234289 U CN220234289 U CN 220234289U CN 202321367858 U CN202321367858 U CN 202321367858U CN 220234289 U CN220234289 U CN 220234289U
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- fan
- tube
- middle tube
- motor assembly
- assembly
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- 238000001816 cooling Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a riveting structure of a fan middle pipe and a motor assembly and a cooling fan comprising the same. In the riveting process, the middle tube of the fan is in clearance fit with the motor component, so that the assembly is convenient, the installation precision of the motor component is reduced, and the installation size of the middle tube of the fan is not influenced. Meanwhile, a positioning rib is arranged on the outer circumference of the middle tube of the fan, and a positioning groove matched with the positioning rib is arranged on the inner side surface of the motor assembly and used for limiting the circumferential rotation of the motor assembly; the middle tube of the fan is arranged as the outer tube of the middle tube and the inner tube of the middle tube, and the bottom end face of the stator assembly is limited through the positioning face between the outer tube and the inner tube of the middle tube, so that the structure is simple, the motor assembly can quickly reach the riveting position, and the connection accuracy of the riveted cooling fan is ensured.
Description
Technical Field
The utility model relates to a connecting structure of heat radiation equipment, in particular to a riveting structure of a fan middle tube and a motor assembly.
Background
The heat radiation fan is a common heat radiation device and is widely applied to traditional or modern instruments and equipment such as computers, communication products, photoelectric products and the like. The cooling fan mainly comprises a fan outer frame, an output shaft of a driving motor of the fan is tightly connected with a middle tube of the fan frame positioned in the center of the fan outer frame, for example, chinese patent grant publication No. CN214063328U discloses a novel rubber coating middle tube fan, and positioning ribs matched with a motor assembly are arranged on the outer side of the middle tube, so that the motor assembly and the middle tube are reliably combined together.
The common middle tube of the fan can be made of two materials, namely plastic and metal, wherein the plastic middle tube can be processed in an integrated forming mode, the metal middle tube is processed in a buried forming mode, and the motor component is mostly encapsulated by silicon steel sheets. When the fan middle tube is combined with the motor assembly, the prior art typically uses a fixing method that involves dispensing and interference fit. The interference fit requires a special press machine, which may cause center tube shrinkage, thereby affecting subsequent fan assembly; the dispensing and fixing needs a special dispensing jig and special glue, and the dispensing amount is difficult to control, so that glue wires overflow, and the production yield of products is affected.
In view of the foregoing prior art, there is a need for an improved manner of securing a tube to a motor assembly in a fan to reduce the adverse effects of an interference fit and dispensing securement to the fan.
Disclosure of Invention
The utility model provides a riveting structure of a fan middle tube and a motor assembly, wherein the motor assembly is provided with a mounting hole along the middle shaft of the fan middle tube, and the motor assembly is sleeved on the outer side of the fan middle tube through the mounting hole;
the outer wall of the fan middle pipe is provided with a riveting block extending to the outer circumference of the fan middle pipe, and the fan middle pipe is riveted with the motor assembly through the riveting block.
Further, the riveting blocks are in a plurality of groups and are respectively distributed in an annular shape along the outer wall of the middle tube of the fan.
The utility model also discloses a cooling fan, which comprises a fan outer frame, a fan middle pipe and a motor assembly, wherein the fan middle pipe and the motor assembly are arranged in the center of the fan outer frame, and the fan middle pipe and the motor assembly are connected according to the riveting structure.
Further, the outer circumferential surface of the middle tube of the fan is provided with a protruding limit rib; limiting grooves are arranged on the inner wall of the mounting hole, and the limiting grooves and the limiting ribs are correspondingly arranged.
Further, the limit rib extends along the central axis direction of the fan middle tube.
Further, the motor assembly comprises a stator assembly and an insulating bracket, wherein the insulating bracket is sleeved on the stator assembly; the inner side of the stator assembly is provided with the mounting hole, the limiting groove extends along the inner side axial direction of the stator assembly, and the middle fan pipe is riveted on the upper end face of the stator assembly through the riveting block.
Further, the middle tube of the fan comprises a middle tube outer tube and a middle tube inner tube, the middle tube inner tube is sleeved on the inner side of the middle tube outer tube, the riveting block is arranged on the outer wall of the middle tube inner tube, and a positioning surface for positioning the end face of the bottom of the stator assembly is formed between the middle tube outer tube and the middle tube inner tube.
Further, the diameter of the mounting hole is larger than the diameter of the inner tube of the middle tube and smaller than the diameter of the outer tube of the middle tube.
The utility model provides a riveting structure of a fan middle pipe and a motor assembly and a cooling fan comprising the same. In the riveting process, the middle tube of the fan is in clearance fit with the motor component, so that the assembly is convenient, the installation precision of the motor component is reduced, and the installation size of the middle tube of the fan is not influenced. Meanwhile, a positioning rib is arranged on the outer circumference of the middle tube of the fan, and a positioning groove matched with the positioning rib is arranged on the inner side surface of the motor assembly and used for limiting the circumferential rotation of the motor assembly; the middle tube of the fan is arranged as the outer tube of the middle tube and the inner tube of the middle tube, and the bottom end face of the stator assembly is limited through the positioning face between the outer tube and the inner tube of the middle tube, so that the structure is simple, the motor assembly can quickly reach the riveting position, and the connection accuracy of the riveted cooling fan is ensured.
Drawings
FIG. 1 is a schematic diagram of a riveting structure of a tube and motor assembly in a fan according to embodiment 1;
FIG. 2 is a schematic view of the structure of a tube in a fan;
FIG. 3 is a schematic diagram of a motor assembly
FIG. 4 is a schematic illustration of the connection of a stator assembly to an insulating support;
fig. 5 is a schematic structural diagram of a heat dissipating fan in embodiment 2;
fig. 6 is a schematic connection diagram of the stator assembly in embodiment 2 engaged with the tube in the fan.
Detailed Description
Example 1: the riveting structure of the fan middle tube 1 and the motor component 2 shown in fig. 1 to 3 comprises the fan middle tube 1 and the motor component 2, wherein the motor component 2 is provided with a mounting hole 3 along the center axis of the fan middle tube 1, and the motor component 2 is sleeved on the outer side of the fan middle tube 1 through the mounting hole 3; the outer wall of the fan middle tube 1 is provided with a riveting block 4 extending towards the outer circumference of the fan middle tube 1, and the fan middle tube 1 is riveted with the motor assembly 2 through the riveting block 4. In this embodiment, the riveting blocks 4 are four groups, and are respectively distributed in an annular shape along the outer wall of the fan middle tube 1.
The riveting of the riveting block 4 can be processed by adopting a pressing riveting or hot riveting mode, and similarly, for the fan middle tube 1 made of plastic materials, the motor assembly 2 and the fan middle tube 1 can be fixed at a riveting point by adopting a hot melting mode. The riveting structure can enable the motor assembly 2 and the fan middle tube 1 to be fixed into a whole, and can avoid the shrinkage of the middle tube caused by interference fit and the overflow of rubber wires caused by glue dispensing fixation.
Example 2: as shown in fig. 5, a cooling fan includes a fan housing 5, a middle fan tube 1 and a motor assembly 2 disposed in the center of the fan housing 5, and the middle fan tube 1 and the motor assembly 2 are connected according to the riveted structure of embodiment 1. The outer circumferential surface of the fan middle tube 1 is provided with a protruding limit rib 6, and the limit rib 6 extends along the central axis direction of the fan middle tube 1; limiting grooves 7 are arranged on the inner wall of the mounting hole 3 of the motor assembly 2, and the limiting grooves 7 are arranged corresponding to the limiting ribs 6. The spacing rib 6 on the outer circumference of the fan middle pipe 1 can position the mounting position of the motor component 2, and the spacing groove 7 of the motor component 2 is arranged along the spacing rib 6, so that the circumferential mounting position of the motor component 2 can be limited.
As shown in fig. 4, the motor assembly 2 includes a stator assembly 8 and an insulating bracket 9, the insulating bracket 9 is sleeved on the stator assembly 8, the stator assembly 8 includes a stator core and a stator winding assembly of the motor, and the insulating bracket 9 can insulate the stator assembly 8. The inner side of the stator assembly 8 is provided with the mounting hole 3, the limit groove 7 extends along the inner side axial direction of the stator assembly 8, and the fan middle tube 1 is riveted on the upper end surface of the stator assembly 8 through the riveting block 4.
As shown in fig. 6, the middle tube 1 of the fan includes a middle tube outer tube 10 and a middle tube inner tube 11, the middle tube outer tube 10 and the outer fan frame 5 are integrally formed, the middle tube inner tube 11 is sleeved on the inner side of the middle tube outer tube 10, the rivet 4 is arranged on the outer wall of the middle tube inner tube 11, and a positioning surface 12 is formed between the middle tube outer tube 10 and the middle tube inner tube 11; the diameter of the mounting hole 3 of the stator assembly 8 is larger than the diameter of the inner tube 11 and smaller than the diameter of the outer tube 10. When the stator assembly 8 is sleeved on the fan middle tube 1, the mounting hole 3 of the stator assembly 8 is clamped on the positioning surface 12 of the fan middle tube 1, so that the axial mounting position of the stator assembly 8 is limited.
The processing manner of this embodiment is as follows, the motor assembly 2 is sleeved on the middle fan tube 1, so that the bottom of the stator assembly 8 of the motor assembly 2 is leveled with the positioning surface 12 of the outer tube 10 of the middle fan tube, and the position of the motor assembly 2 is limited along the limit rib 6 on the outer side of the middle fan tube 1, and at this time, the motor assembly 2 and the middle fan tube 1 are in a clearance fit state. The fan middle tube 1 and the motor assembly 2 are riveted at each riveting point of the fan middle tube 1, so that the motor assembly 2 and the fan middle tube 1 are connected into a fastening whole.
While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.
Claims (8)
1. The riveting structure of the fan middle tube and the motor component is characterized in that the motor component is provided with a mounting hole along the center axis of the fan middle tube, and the motor component is sleeved on the outer side of the fan middle tube through the mounting hole; the method is characterized in that:
the outer wall of the fan middle pipe is provided with a riveting block extending to the outer circumference of the fan middle pipe, and the fan middle pipe is riveted with the motor assembly through the riveting block.
2. The staking structure of the fan middle tube and motor assembly of claim 1, wherein: the riveting blocks are in a plurality of groups and are respectively distributed in an annular shape along the outer wall of the middle tube of the fan.
3. A kind of cooling fan, including the outer frame of the fan, set up in fan middle tube and motor assembly of the center of outer frame of the fan; the method is characterized in that: the fan middle tube is connected to the motor assembly according to the staking structure of claim 1 or 2.
4. A radiator fan as claimed in claim 3, wherein: the outer circumferential surface of the middle tube of the fan is provided with a protruding limit rib; limiting grooves are arranged on the inner wall of the mounting hole, and the limiting grooves and the limiting ribs are correspondingly arranged.
5. A radiator fan as claimed in claim 4, wherein: the limiting ribs extend along the central axis direction of the middle tube of the fan.
6. A radiator fan as claimed in claim 4, wherein: the motor assembly comprises a stator assembly and an insulating bracket, and the insulating bracket is sleeved on the stator assembly; the inner side of the stator assembly is provided with the mounting hole, the limiting groove extends along the inner side axial direction of the stator assembly, and the middle fan pipe is riveted on the upper end face of the stator assembly through the riveting block.
7. A radiator fan as claimed in claim 6, wherein: the middle tube of the fan comprises a middle tube outer tube and a middle tube inner tube, the middle tube inner tube is sleeved on the inner side of the middle tube outer tube, the riveting block is arranged on the outer wall of the middle tube inner tube, and a positioning surface for positioning the end face of the bottom of the stator assembly is formed between the middle tube outer tube and the middle tube inner tube.
8. A radiator fan as claimed in claim 7, wherein: the diameter of the mounting hole is larger than that of the inner tube of the middle tube and smaller than that of the outer tube of the middle tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321367858.2U CN220234289U (en) | 2023-06-01 | 2023-06-01 | Riveting structure of fan middle tube and motor assembly and cooling fan comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321367858.2U CN220234289U (en) | 2023-06-01 | 2023-06-01 | Riveting structure of fan middle tube and motor assembly and cooling fan comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234289U true CN220234289U (en) | 2023-12-22 |
Family
ID=89179453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321367858.2U Active CN220234289U (en) | 2023-06-01 | 2023-06-01 | Riveting structure of fan middle tube and motor assembly and cooling fan comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234289U (en) |
-
2023
- 2023-06-01 CN CN202321367858.2U patent/CN220234289U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |