CN210669761U - Flywheel of variable frequency motor and anti-loosening fixing structure of cooling fan - Google Patents
Flywheel of variable frequency motor and anti-loosening fixing structure of cooling fan Download PDFInfo
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- CN210669761U CN210669761U CN201922201435.3U CN201922201435U CN210669761U CN 210669761 U CN210669761 U CN 210669761U CN 201922201435 U CN201922201435 U CN 201922201435U CN 210669761 U CN210669761 U CN 210669761U
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- flywheel
- internal thread
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- thread pin
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- 238000001816 cooling Methods 0.000 title claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to the field of variable frequency motors, in particular to a locking and fixing structure of a flywheel and a cooling fan of a variable frequency motor, which comprises the flywheel and a shaft sleeve, wherein the shaft sleeve is arranged at the center of the flywheel, a plurality of mounting holes are uniformly distributed at the flange part of the shaft sleeve, rivet holes are arranged at the positions of the axial end surface of the flywheel corresponding to the mounting holes, an internal thread pin for mounting the cooling fan passes through the mounting holes and the rivet holes and is fixed on the flange part by riveting, the internal thread pin is a stepped cylinder, one end of the stepped cylinder is a large-diameter section, the other end is a small-diameter section, a middle-diameter section is arranged between the large-diameter section and the small-diameter section, a tangent plane for circumferential limiting is arranged at the circumference of the middle-diameter section to form a circumferential limiting part, the mounting hole at the flange part of the shaft sleeve is arranged into a flat hole with the same shape as the cross section at the middle-section of, even leading to the problem of the cooling fan falling off.
Description
Technical Field
The utility model relates to an inverter motor field, concretely relates to inverter motor's flywheel and radiator fan's locking fixed knot construct.
Background
Generally, a shaft sleeve of the flywheel is provided with a plurality of mounting holes through a flange part of the shaft sleeve and an axial end face of the flywheel, an internal thread pin provided with a threaded hole is inserted into the mounting hole and is riveted and fixed, and a cooling fan arranged on the flywheel is in threaded fit with the threaded hole of the internal thread pin through a screw to form fastening connection. Because the internal thread pin is a cylindrical pin, the mounting holes arranged on the flange part of the shaft sleeve and the axial end surface of the flywheel are all round holes. After the internal thread pin is inserted into the mounting holes in clearance fit with the flange part of the shaft sleeve and the axial end face of the flywheel, riveting is formed under the action of riveting pressure to connect and fix the flange part of the shaft sleeve and the flywheel together, and then the internal thread pin is screwed into the threaded hole of the internal thread pin to fix the heat radiation fan at the axial end of the flywheel. In the structure, although the flange part of the shaft sleeve and the flywheel can form axial limiting riveting through the internal thread pin, so that the shaft sleeve and the flywheel cannot be separated, because a gap exists between the cylindrical peripheral surface of the internal thread pin and the perfect circle mounting hole, once the radiating fan is mounted, the internal thread pin is easy to loosen in the perfect circle mounting hole due to vibration generated by the radiating fan in the rotary motion, so that the internal thread pin rotates relative to the screw, the radiating fan is fixed and loosened, and abnormal sound is generated in the running process of the variable frequency motor; after a long time, the screw can even fall off from the internal thread pin, so that the heat radiation fan generates larger abnormal sound, even falls off. The phenomenon is an unsolved difficult problem in the manufacturing industry of the variable frequency motor for a long time.
Disclosure of Invention
The utility model aims at the not enough that prior art corresponds, provide an inverter motor's flywheel and radiator fan's locking fixed knot structure, not only can form the spacing riveting of axial through the internal thread round pin with axle sleeve flange portion and flywheel, make axle sleeve and flywheel can not separate, but also can fix radiator fan at flywheel axial end in the screw hole of screw income internal thread round pin with the screw. Because there is the spacing portion of circumference between internal thread round pin cylinder global and the mounting hole, fix radiator fan behind the flywheel axial end, the vibration that radiator fan produced in rotary motion can not arouse that the internal thread round pin rotates for the screw, can not lead to radiator fan's fixed not hard up yet, has stopped inverter motor because radiator fan is not hard up the abnormal sound that produces at the operation in-process, even inverter motor operates for a long time, can not lead to the screw to drop from the internal thread round pin yet, messenger radiator fan drops.
The utility model aims at adopting the following scheme to realize: a locking and fixing structure of a flywheel and a heat dissipation fan of a variable frequency motor comprises the flywheel and a shaft sleeve, wherein the shaft sleeve is arranged at the center of the flywheel, so that the axial leads of the flywheel and the shaft sleeve coincide, a flange part of the shaft sleeve is fixedly connected with the axial end face of the flywheel, a plurality of mounting holes are uniformly distributed on the flange part of the shaft sleeve, a rivet hole is arranged at the position, corresponding to the mounting hole, of the axial end face of the flywheel, an internal thread pin for mounting the heat dissipation fan penetrates through the mounting hole and the rivet hole and is fixed on the flange part through riveting, the internal thread pin is a stepped cylinder, one end of the stepped cylinder is a large-diameter section, the other end of the stepped cylinder is a small-diameter section, a middle-diameter section is arranged between the large-diameter section and the small-diameter section, a circumferential limiting part is formed by a circumferential limiting cutting plane on the circumference of the middle-, the internal thread pin and the mounting hole are circumferentially limited and fixed.
The outer diameter of the middle diameter section of the internal thread pin is larger than the aperture of the rivet hole, and the thickness of the circumferential limiting part of the middle diameter section is smaller than or equal to that of the flange part of the shaft sleeve.
The outer diameter of the large-diameter section of the internal thread pin is larger than the aperture of the mounting hole, and the large-diameter section of the internal thread pin is used for axial limiting of the internal thread pin.
The length of the small-diameter section of the internal thread pin is larger than the thickness of the axial end wall of the flywheel.
The axle center hole of the internal thread pin is a stepped hole, a small-diameter hole of the stepped hole is provided with an internal thread, and the port of a large-diameter hole of the stepped hole is arranged to be a horn mouth.
The utility model discloses contain following beneficial effect: the flywheel comprises a flywheel and a shaft sleeve, wherein the shaft sleeve is arranged at the center of the flywheel, so that the axial leads of the flywheel and the shaft sleeve coincide, the flange part of the shaft sleeve is fixedly connected with the axial end face of the flywheel, a plurality of mounting holes are uniformly distributed in the flange part of the shaft sleeve, a rivet hole is formed in the position, corresponding to the mounting holes, of the axial end face of the flywheel, an internal thread pin for mounting a cooling fan penetrates through the mounting holes and the rivet hole and is fixed on the flange part through riveting, the internal thread pin is a stepped cylinder, one end of the stepped cylinder is a large-diameter section, the other end of the stepped cylinder is a small-diameter section, a middle-diameter section is arranged between the large-diameter section and the small-diameter section, a cutting plane for circumferential limiting is arranged on the circumference of the middle section to form a circumferential limiting part, the mounting hole of the flange part of the shaft, because there is the spacing portion of circumference between the screw thread round pin cylinder global and the mounting hole, fix radiator fan at flywheel axial end back, the vibration that radiator fan produced in rotary motion can lead to the screw thread round pin to become flexible in the mounting hole slightly, but can not lead to the screw thread round pin to rotate a week relatively, can not lead to radiator fan's fixed not hard up more, the abnormal sound of inverter motor because radiator fan is not hard up and produces in the operation process has been stopped, even inverter motor operates for a long time, can not lead to the screw to drop from the screw thread round pin yet, make radiator fan drop.
The outer diameter of the middle diameter section of the internal thread pin is larger than the aperture of the rivet hole, and the thickness of the circumferential limiting part of the middle diameter section is smaller than or equal to that of the flange part of the shaft sleeve, so that the middle diameter section of the internal thread pin is axially limited in the mounting hole of the shaft sleeve.
The outer diameter of the large-diameter section of the internal thread pin is larger than the aperture of the mounting hole and used for axial limiting of the internal thread pin, and the large-diameter section of the internal thread pin is axially limited on the end face of the flange portion of the shaft sleeve.
The length of the small-diameter section of the internal thread pin is larger than the thickness of the axial end wall of the flywheel, so that the internal thread pin can be riveted and fixed with the flange part of the shaft sleeve through the small-diameter section of the internal thread pin.
The axle center hole of the internal thread pin is a stepped hole, the small-diameter hole of the stepped hole is provided with an internal thread, the port of the large-diameter hole of the stepped hole is a horn mouth, and the screw is screwed into the axle center hole of the internal thread pin to fix the heat radiation fan at the axial end of the flywheel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the shaft sleeve of the present invention;
FIG. 3 is a schematic view of FIG. 2 taken in the direction A;
fig. 4 is a schematic structural view of the female screw pin of the present invention;
fig. 5 is a schematic view of fig. 4 in the direction of B.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
As shown in fig. 1 to 5, a locking fixing structure for a flywheel and a heat dissipation fan of a variable frequency motor comprises a flywheel 1 and a shaft sleeve 2, wherein the shaft sleeve 2 is installed at the center of the flywheel 1, so that the axial leads of the flywheel 1 and the shaft sleeve 2 coincide, a flange part 2-1 of the shaft sleeve 2 is fixedly connected with the axial end face of the flywheel 1, a plurality of mounting holes 2-2 are uniformly distributed on the flange part 2-1 of the shaft sleeve 2, a rivet hole 1-1 is arranged at a position, corresponding to the mounting hole 2-2, of the axial end face of the flywheel 1, an internal thread pin 4 for installing the heat dissipation fan penetrates through the mounting hole 2-2 and the rivet hole 1-1 and is fixed on the flange part 2-1 by riveting, the internal thread pin 4 is a stepped cylinder, one end of the stepped cylinder is a large diameter section 4-1, the outer diameter of the large diameter section 4-1 of the internal thread pin 4 is larger than the aperture of the, the axial limiting device is used for axially limiting the internal thread pin 4, so that the large-diameter section 4-1 of the internal thread pin 4 is axially limited on the end face of the flange part 2-1 of the shaft sleeve 2. The other end is a small-diameter section 4-3, the length of the small-diameter section 4-3 of the internal thread pin 4 is larger than the thickness of the axial end wall of the flywheel 1, so that the internal thread pin 4 can be riveted and fixed with the flange part 2-1 of the shaft sleeve 2 through the small-diameter section 4-3 of the internal thread pin 4. The middle diameter section 4-2 is arranged between the large diameter section 4-1 and the small diameter section 4-3, a tangent plane 4-4 for circumferential limiting is arranged on the circumference of the middle diameter section 4-2 to form a circumferential limiting part, the outer diameter of the middle diameter section 4-2 of the internal thread pin 4 is larger than the aperture of the rivet hole 1-1, the thickness of the circumferential limiting part of the middle diameter section 4-2 is smaller than or equal to the thickness of the flange part 2-1 of the shaft sleeve 2, and the middle diameter section 4-2 of the internal thread pin 4 is axially limited in the mounting hole 2-2 of the shaft sleeve 2. The mounting hole 2-2 of the flange part 2-1 of the shaft sleeve 2 is a flat hole with the same cross section shape as the middle section 4-2 of the internal thread pin 4, so that the internal thread pin 4 and the mounting hole 2-2 form circumferential limiting fixation. The axial hole 4-5 of the internal thread pin 4 is a stepped hole, the small diameter hole of the stepped hole is provided with an internal thread, the port of the large diameter hole of the stepped hole is a bell mouth, and a screw is screwed into the axial hole 4-5 of the internal thread pin 4 to fix the heat radiation fan at the axial end of the flywheel 2.
In this embodiment, four internal thread pins 4 for installing the heat dissipation fan are provided, and all pass through the corresponding installation holes 2-2 and rivet holes 1-1, and are fixed on the flange portion 2-1 by riveting, the large diameter section 4-1 of the internal thread pin 4 is axially limited on the end surface of the flange portion 2-1 of the shaft sleeve 2, so that the middle diameter section 4-2 of the internal thread pin 4 is axially limited in the installation hole 2-2 of the shaft sleeve 2, the circumference of the middle section 4-2 is provided with a tangential plane 4-4 for circumferential limiting to form a circumferential limiting portion, and the internal thread pin 4 and the installation hole 2-2 form circumferential limiting fixation. Because a circumferential limiting part exists between the cylindrical circumferential surface of the internal thread pin 4 and the mounting hole 2-2, the heat radiation fan is fixed at the back of the axial end of the flywheel 2, the vibration generated by the heat radiation fan in the rotary motion cannot cause the internal thread pin 4 to rotate for a circle relative to the screw, and the fixation looseness of the heat radiation fan can not be caused, the abnormal sound generated by the looseness of the heat radiation fan in the operation process of the variable frequency motor is avoided, and even if the variable frequency motor operates for a long time, the screw cannot fall off from the internal thread pin 4, so that the heat radiation fan falls off.
The above only be the utility model discloses a preferred embodiment to be not used for the restriction the utility model discloses, technical personnel in the field are not deviating from the utility model discloses a under the prerequisite of spirit, right the utility model discloses the change of going on all falls into the utility model discloses a protection scope.
Claims (5)
1. The utility model provides a variable frequency motor's flywheel and radiator fan's locking fixed knot constructs, includes flywheel (1), axle sleeve (2), install in the center of flywheel (1) axle sleeve (2), make the axial lead coincidence of flywheel (1) and axle sleeve (2), the axial end face fixed connection of flange portion (2-1) and flywheel (1) of axle sleeve (2), its characterized in that: the flange part (2-1) of the shaft sleeve (2) is uniformly provided with a plurality of mounting holes (2-2), the axial end face of the flywheel (1) is provided with rivet holes (1-1) corresponding to the positions of the mounting holes (2-2), an internal thread pin (4) for mounting a cooling fan penetrates through the mounting holes (2-2) and the rivet holes (1-1) and is fixed on the flange part (2-1) through riveting, the internal thread pin (4) is a stepped cylinder, one end of the stepped cylinder is a large-diameter section (4-1), the other end of the stepped cylinder is a small-diameter section (4-3), a middle-diameter section (4-2) is arranged between the large-diameter section (4-1) and the small-diameter section (4-3), the circumference of the middle-diameter section (4-2) is provided with a tangential plane (4-4) for circumferential spacing to form a circumferential spacing part, the mounting hole (2-2) of the flange part (2-1) of the shaft sleeve (2) is a flat hole with the same cross section shape as the middle diameter section (4-2) of the internal thread pin (4), so that the internal thread pin (4) and the mounting hole (2-2) form circumferential limiting fixation.
2. The anti-loose fixing structure of the flywheel and the heat dissipation fan of the variable frequency motor as claimed in claim 1, wherein: the outer diameter of a middle diameter section (4-2) of the internal thread pin (4) is larger than the aperture of the rivet hole (1-1), and the thickness of a circumferential limiting part of the middle diameter section (4-2) is smaller than or equal to that of a flange part (2-1) of the shaft sleeve (2).
3. The anti-loose fixing structure of the flywheel and the heat dissipation fan of the variable frequency motor as claimed in claim 1, wherein: the outer diameter of the large-diameter section (4-1) of the internal thread pin (4) is larger than the aperture of the mounting hole (2-2) and used for axial limiting of the internal thread pin (4).
4. The anti-loose fixing structure of the flywheel and the heat dissipation fan of the variable frequency motor as claimed in claim 1, wherein: the length of the small-diameter section (4-3) of the internal thread pin (4) is larger than the thickness of the axial end wall of the flywheel (1).
5. The anti-loose fixing structure of the flywheel and the heat dissipation fan of the variable frequency motor as claimed in claim 1, wherein: the shaft center hole (4-5) of the internal thread pin (4) is a stepped hole, a small-diameter hole of the stepped hole is provided with an internal thread, and the port of a large-diameter hole of the stepped hole is a horn mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922201435.3U CN210669761U (en) | 2019-12-10 | 2019-12-10 | Flywheel of variable frequency motor and anti-loosening fixing structure of cooling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922201435.3U CN210669761U (en) | 2019-12-10 | 2019-12-10 | Flywheel of variable frequency motor and anti-loosening fixing structure of cooling fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210669761U true CN210669761U (en) | 2020-06-02 |
Family
ID=70814798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922201435.3U Active CN210669761U (en) | 2019-12-10 | 2019-12-10 | Flywheel of variable frequency motor and anti-loosening fixing structure of cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210669761U (en) |
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2019
- 2019-12-10 CN CN201922201435.3U patent/CN210669761U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231030 Address after: Building 21, No. 40, Chenjiawan San Village, Huaxi Street, Banan District, Chongqing 400054 Patentee after: Chongqing Jili Yunfeng Motor Co.,Ltd. Address before: Chen Jia Wan 400054 Chongqing city Banan District lijiatuo Three Village No. 40 Patentee before: CHONGQING JILI YUNFENG INDUSTRY (Group) Co.,Ltd. |