CN216530918U - Magnetic conduction ring rotating shaft bonding structure for brushless direct current fan - Google Patents
Magnetic conduction ring rotating shaft bonding structure for brushless direct current fan Download PDFInfo
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- CN216530918U CN216530918U CN202122451161.0U CN202122451161U CN216530918U CN 216530918 U CN216530918 U CN 216530918U CN 202122451161 U CN202122451161 U CN 202122451161U CN 216530918 U CN216530918 U CN 216530918U
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Abstract
The utility model provides a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan, wherein an inner hole is formed in a magnetic conduction ring, the inner hole is used for installing a rotating shaft, and a first groove is formed in the wall of the inner hole; a second groove is formed in the outer surface of the rotating shaft; glue is filled in the first groove and the second groove, and the magnetic conduction ring and the rotating shaft can be bonded by the glue. This bonding structure can increase dislocation glue storage tank on the cylinder fitting surface of magnetic ring and the smooth connection of pivot, forms the key after the glue solidification of high temperature curing, firmly pins the face of cylinder of two connections, prevents that the axial from taking place to drop.
Description
Technical Field
The utility model relates to the field of motors, in particular to a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan.
Background
For the brushless direct current axial flow fan, the magnetic conduction ring and the rotating shaft mainly adopt three modes of interference fit, cast aluminum casting and bonding, wherein the bonding mode is the most common, and the brushless direct current axial flow fan is simple and convenient to operate and suitable for mass production. For the mode of bonding, a mode of directly bonding an optical axis is adopted in the past, a transition fit mode is adopted between the rotating shaft and the magnetic conduction ring, and as the axial flow fan has axial force during operation, for the fan with high static pressure of the fan, the magnetic conduction ring and the rotating shaft in the bonding mode are likely to fall off due to the action of the axial force to cause the failure of the fan.
Therefore, a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan, which can prevent the rotating shaft from falling off, is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan, which can be used for increasing a staggered glue storage groove on a cylindrical matching surface where a magnetic conduction ring and a rotating shaft are smoothly connected, and a key is formed after high-temperature cured glue is cured to firmly lock two connected cylindrical surfaces to prevent the two cylindrical surfaces from falling off axially.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan is used for a brushless direct current axial flow fan, wherein an inner hole is formed in a magnetic conduction ring and used for installing a rotating shaft, and a first groove is formed in the wall of the inner hole; a second groove is formed in the outer surface of the rotating shaft; glue is filled in the first groove and the second groove, and the magnetic conduction ring and the rotating shaft can be bonded by the glue.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, the first groove is an annular groove, and the second groove is an annular groove.
Further, in the above structure for bonding a rotating shaft of a flux ring for a brushless dc fan, one portion of the first groove corresponds to one portion of the second groove, another portion of the first groove corresponds to an outer surface of the rotating shaft, and another portion of the second groove corresponds to an inner hole wall of the flux ring.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, the width of the first groove is the same as the width of the second groove; the depth of the first groove is consistent with the depth of the second groove.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, in the width direction, half of the first groove corresponds to half of the second groove.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, the glue is a high temperature curing glue, and the glue in the first groove and the second groove forms a bond after being cured at a high temperature.
Further, in the above magnetic conduction ring rotating shaft bonding structure for the brushless direct current fan, the number of the first grooves is 1 to 3, a distance is reserved between every two adjacent first grooves, the number of the second grooves is 1 to 3, a distance is reserved between every two adjacent second grooves, and each first groove corresponds to one second groove.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, the aperture of the inner hole of the magnetic conductive ring is 3mm to 6mm, the width of the first groove is 0.5mm to 3mm, and the depth of the first groove is 0.1mm to 0.3mm, one of the first grooves near the left end of the magnetic conductive ring is 1.5mm away from the left end surface of the magnetic conductive ring, and the distance between the two first grooves is 2 mm.
Further, in the above magnetic conductive ring rotating shaft bonding structure for the brushless dc fan, the outer diameter of the rotating shaft is 3mm to 6mm, the width of the second groove is 0.5mm to 3mm, and the depth of the second groove is 0.1mm to 0.3mm, one of the second grooves near the left end of the rotating shaft is 1.0mm away from the left end surface of the rotating shaft, and the distance between the two second grooves is 2 mm.
Further, in the above magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, an outer surface of the inner hole portion of the rotating shaft entering the magnetic conductive ring is coated with a medium temperature curing epoxy structural adhesive.
The analysis shows that the utility model discloses a magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan, wherein two first grooves are arranged on an inner hole of a magnetic conduction ring of the bonding structure, two second grooves are arranged on the outer surface of a rotating shaft, the two first grooves and the two second grooves are respectively distributed in a staggered mode to form two Z-shaped glue storage spaces, high-temperature curing glue is filled in the two Z-shaped glue storage spaces, and the two Z-shaped glue storage spaces are integrally formed after high-temperature curing to form a key, so that the bonding strength of the magnetic conduction ring and the rotating shaft is improved, and the integral safety redundancy of the bonding structure is improved by more than 10 times.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. Wherein:
fig. 1 is a schematic sectional structure view of a rotor of a brushless axial flow fan.
Fig. 2 is a schematic cross-sectional structure diagram according to an embodiment of the utility model.
Fig. 3 is a schematic cross-sectional view illustrating a rotating shaft according to an embodiment of the utility model.
Fig. 4 is a schematic cross-sectional view of a magnetic conductive ring according to an embodiment of the present invention.
Fig. 5 is a partially enlarged structural view of a portion a of fig. 2.
Description of reference numerals: 1, an impeller; 2, a magnetic conduction ring; 3, a different magnetic strip; 4, a rotating shaft; 5, inner holes; 6, outer holes; 7 a first groove; 8 a second groove; 9 glue.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the utility model, and not limitation of the utility model. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.
In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
One or more examples of the utility model are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the utility model. As used herein, the terms "first," "second," and "third," etc. may be used interchangeably to distinguish one component from another, and are not intended to denote the position or importance of the individual components.
As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided a magnetic conductive ring rotating shaft bonding structure for a brushless dc fan, as shown in fig. 1, the brushless dc fan includes a rotating shaft 4 assembly and an impeller 1, and the impeller 1 is sleeved on an outer periphery of a magnetic conductive ring 2. As shown in fig. 2, the magnetic conductive ring 2 is provided with an inner hole 5 and an outer hole 6, the diameter of the outer hole 6 is larger than that of the inner hole 5, the axis of the inner hole 5 is collinear with that of the outer hole 6, and the inner wall of the outer hole 6 of the magnetic conductive ring 2 is provided with the opposite magnetic stripe 3. An inner hole 5 of the magnetic conductive ring 2 is used for installing the rotating shaft 4, and as shown in fig. 4, a first groove 7 is arranged on the hole wall of the inner hole 5; as shown in fig. 3, a second groove 8 is provided on the outer surface of the rotating shaft 4; glue 9 is filled in the first groove 7 and the second groove 8, and the magnetic conduction ring 2 can be bonded with the rotating shaft 4 through the glue 9.
Further, first recess 7 is the annular groove, and second recess 8 is the annular groove, and the cooperation of annular first recess 7 and second recess 8 can increase the volume that stores up gluey space, improves the adhesive strength of magnetic ring 2 and pivot 4.
Further, as shown in fig. 5, the first groove 7 and the second groove 8 are distributed in a staggered manner, one part of the first groove 7 corresponds to one part of the second groove 8, the other part of the first groove 7 corresponds to the outer surface of the rotating shaft 4, and the other part of the second groove 8 corresponds to the wall of the inner hole 5 of the magnetic conductive ring 2. So set up and to make first recess 7 and 8 dislocation distributions of second recess and form the Z type and store up gluey space, dislocation distribution is compared and is aligned the bonding and increased the axial bonding area of glue 9 with magnetic ring 2 and pivot 4, improves the bonding strength of magnetic ring 2 and pivot 4.
Further, the width of the first groove 7 is consistent with the width of the second groove 8; the depth of the first grooves 7 corresponds to the depth of the second grooves 8. The part is convenient to process by the aid of the arrangement.
Further, half of the first groove 7 corresponds to half of the second groove 8 in the width direction. The arrangement enables the first groove 7 and the second groove 8 to form a Z-shaped glue storage space.
Further, the glue 9 is a high-temperature curing glue, the adhesive is an epoxy structural glue, the glue 9 in the first groove 7 and the second groove 8 is cured at a high temperature to form a whole and form a key, and the bonding strength between the magnetic conductive ring 2 and the rotating shaft 4 is improved.
Further, first recess 7 is provided with 1 ~ 3, has the distance between two adjacent first recesses 7, and second recess 8 is provided with 1 ~ 3, has the distance between two adjacent second recesses 8, and every first recess 7 corresponds a second recess 8. The number of the first grooves 7 and the second grooves 8 may be increased or decreased as appropriate depending on the axial length and the required bonding strength, and preferably, the number of the first grooves 7 is 2 and the number of the second grooves 8 is 2. The bonding strength of the magnetic conduction ring 2 and the rotating shaft 4 can be further improved by the arrangement, so that the overall safety redundancy of the bonding structure is improved by more than 10 times.
Further, the aperture of the inner hole 5 of the magnetic conductive ring 2 is 3mm to 6mm, the width of the groove is 0.5mm to 3mm, and the depth is 0.1mm to 0.3mm, in an embodiment of the present invention, the aperture of the inner hole 5 of the magnetic conductive ring 2 is 4mm, the width of the first groove 7 is 1mm, and the depth of the first groove 7 is 0.2mm, one first groove 7 near the left end of the magnetic conductive ring 2 is 1.5mm from the left end surface of the magnetic conductive ring 2 (the end of the magnetic conductive ring 2 having the inner hole 5 is the left end, and the end having the outer hole 6 is the right end), and the distance between two first grooves 7 is 2 mm.
Further, the outer diameter of the rotating shaft 4 at the bonding position with the magnetic conductive ring 2 is 3mm to 6mm, the width of the second groove 8 is 0.5mm to 3mm, and the depth of the second groove 8 is 0.1mm to 0.3mm, in an embodiment of the present invention, the outer diameter of the rotating shaft 4 at the bonding position with the magnetic conductive ring 2 is 4mm, the width of the second groove 8 is 1mm and the depth of the second groove 8 is 0.2mm, one second groove 8 close to the left end of the rotating shaft 4 is 1.0mm from the left end surface of the rotating shaft 4 (one end bonded with the magnetic conductive ring 2 is the left end, and the other end is the right end), and the distance between the two second grooves 8 is 2 mm.
Furthermore, the outer surface of the part of the rotating shaft 4 entering the inner hole 5 of the magnetic conductive ring 2 is coated with medium-temperature cured epoxy structural adhesive, so that the bonding strength between the magnetic conductive ring 2 and the rotating shaft 4 can be improved.
The connecting method of the bonding structure comprises the following steps:
firstly, coating medium-temperature curing epoxy structural adhesive on the outer surface of the bonded rotating shaft 4 and the magnetic conduction ring 2, pressing one end of the rotating shaft 4 into an inner hole 5 of the magnetic conduction ring 2 from an outer hole 6 of the magnetic conduction ring 2, enabling one end surface of the rotating shaft 4 to be flush with the end surface of the magnetic conduction ring 2, cleaning residual adhesive at the root part of the rotating shaft 4, and putting the whole bonded structure of the magnetic conduction ring 2 and the rotating shaft 4 into an oven for heating and curing.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the utility model provides a magnetic conduction ring pivot bonding structure for brushless DC fan, be provided with two first recesses 7 on this bonding structure's the hole 5 of magnetic conduction ring 2, be provided with two second recesses 8 on the surface of pivot 4, two first recesses 7 and two second recesses 8 dislocation distribution respectively and form two Z types and store up gluey spaces, two Z types are stored up gluey space intussuseption and are filled with high temperature curing and glue, form wholly and form the key after high temperature curing, improve the bonding strength of magnetic conduction ring 2 and pivot 4, make the whole safe redundancy of bonding structure improve more than 10 times.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A magnetic conduction ring rotating shaft bonding structure for a brushless direct current fan is characterized in that,
the magnetic conductive ring is provided with an inner hole, the inner hole is used for mounting the rotating shaft, and a first groove is formed in the hole wall of the inner hole;
a second groove is formed in the outer surface of the rotating shaft;
glue is filled in the first groove and the second groove, and the magnetic conduction ring and the rotating shaft can be bonded by the glue.
2. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 1,
the first groove is an annular groove, and the second groove is an annular groove.
3. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 1,
one part of the first groove corresponds to one part of the second groove, the other part of the first groove corresponds to the outer surface of the rotating shaft, and the other part of the second groove corresponds to the inner hole wall of the magnetic conductive ring.
4. The magnetic conductive ring rotating shaft bonding structure for the brushless direct current fan according to claim 1,
the width of the first groove is consistent with that of the second groove;
the depth of the first groove is consistent with the depth of the second groove.
5. The magnetic conductive ring rotating shaft bonding structure for the brushless direct current fan according to claim 1,
in the width direction, half of the first groove corresponds to half of the second groove.
6. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 1,
the glue is high-temperature curing glue, and the glue in the first groove and the glue in the second groove form a bond after high-temperature curing.
7. The magnetic conductive ring rotating shaft bonding structure for the brushless direct current fan according to any one of claims 1 to 6,
1-3 first grooves are arranged, a distance is reserved between every two adjacent first grooves,
the second recess is provided with 1 ~ 3, adjacent two have the distance between the second recess, every first recess corresponds one the second recess.
8. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 7,
the aperture of the inner hole of the magnetic conductive ring is 3-6 mm, the width of the first groove is 0.5-3 mm, the depth of the first groove is 0.1-0.3 mm, one first groove close to the left end of the magnetic conductive ring is 1.5mm away from the left end face of the magnetic conductive ring, and the distance between the two first grooves is 2 mm.
9. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 7,
the outer diameter of the rotating shaft is 3 mm-6 mm, the width of each second groove is 0.5 mm-3 mm, the depth of each second groove is 0.1 mm-0.3 mm, one second groove close to the left end of the rotating shaft is 1.0mm away from the left end face of the rotating shaft, and the distance between the two second grooves is 2 mm.
10. The magnetic conductive ring rotating shaft bonding structure for the brushless DC fan according to claim 1,
and the outer surface of the inner hole part of the rotating shaft entering the magnetic conduction ring is coated with medium-temperature cured epoxy structural adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451161.0U CN216530918U (en) | 2021-10-11 | 2021-10-11 | Magnetic conduction ring rotating shaft bonding structure for brushless direct current fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122451161.0U CN216530918U (en) | 2021-10-11 | 2021-10-11 | Magnetic conduction ring rotating shaft bonding structure for brushless direct current fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216530918U true CN216530918U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122451161.0U Active CN216530918U (en) | 2021-10-11 | 2021-10-11 | Magnetic conduction ring rotating shaft bonding structure for brushless direct current fan |
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| Country | Link |
|---|---|
| CN (1) | CN216530918U (en) |
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2021
- 2021-10-11 CN CN202122451161.0U patent/CN216530918U/en active Active
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