Magnetic attraction assembly and cooling fan

Abstract

The utility model discloses a magnetic attraction assembly and discloses a heat dissipation fan with the magnetic attraction assembly, the magnetic attraction assembly comprises a shell, an opening, a limiting cavity and a containing cavity are sequentially formed in the shell in the depth direction, and the diameter of the limiting cavity is larger than the diameter of the opening and the diameter of the containing cavity; the magnetic attraction piece is installed in the containing cavity and used for attracting a rotating shaft of a fan blade; and the retaining ring is installed in the limiting cavity, the periphery of the retaining ring is matched with the limiting cavity, a buckling part is arranged in the retaining ring, and the buckling part is used for being buckled with a rotating shaft of a fan blade, so that the assembling difficulty can be greatly reduced, defects occurring in the assembling process are reduced, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation fans, in particular to a magnetic attraction component and a heat dissipation fan. Background Art

[0002] In the prior art, a fan with stable operation is provided, with patent number CN216216314U, which includes a stator and a rotor. The rotor is connected to the fan blades through an axis. A positioning sleeve extends axially inside the stator. A suction plate is provided in the positioning sleeve. The axis extends into the positioning sleeve and is magnetically connected to the suction plate.

[0003] Since magnetic pressure is generated between the rotor and the stator, that is, the suction force between the rotor and the stator is easily insufficient when the fan blades rotate, the fan blades may jump and collide along the axial direction of the positioning sleeve. Therefore, a magnetic sleeve is added in the positioning sleeve, and a suction plate is arranged on the magnetic sleeve. The suction plate attracts the axis of the fan blade to eliminate the axial jump of the fan blade. A wear-resistant plate is arranged between the suction plate and the axis of the fan blade to reduce the wear between the suction plate and the axis of the fan blade.

[0004] However, the existing positioning sleeve has a deep inner cavity, and the magnetic sleeve, suction plate and wear-resistant plate are easily tilted and skewed when they are installed in the positioning sleeve in sequence, which easily leads to poor installation and a high probability of error, resulting in low assembly efficiency. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a magnetic attraction component, which can greatly reduce the difficulty of assembly, reduce defects in the assembly process, and improve assembly efficiency.

[0006] The utility model also provides a heat dissipation fan having the magnetic attraction component.

[0007] A magnetic attraction component according to the first aspect of the utility model includes: a shell, an opening, a limiting cavity, and an accommodating cavity are sequentially formed inside the shell along the depth direction, and the diameter of the limiting cavity is larger than the diameters of the opening and the accommodating cavity; a magnetic attraction component, which is installed in the accommodating cavity and is used to attract the rotating shaft of the fan blade; a buckle ring, which is installed in the limiting cavity, and the outer periphery of the buckle ring matches the limiting cavity, and a buckle portion is arranged inside the buckle ring, and the buckle portion is used to buckle with the rotating shaft of the fan blade.

[0008] According to some embodiments of the utility model, a wear-resistant sheet is further included. The wear-resistant sheet is arranged in the accommodating cavity, and the wear-resistant sheet is located on a side of the magnetic attraction component close to the buckle.

[0009] According to some embodiments of the present invention, the magnetic attraction member is cylindrical, and the outer circumference of the magnetic attraction member matches the interior of the accommodating cavity.

[0010] According to some embodiments of the present utility model, the shell has an annular portion, and the annular portion extends in an annular manner along the outer circumference of the shell to form the limiting cavity.

[0011] A heat dissipation fan according to a second aspect of the present invention includes a magnetic attraction component as described in any one of the above items.

[0012] According to some embodiments of the present invention, an outer frame is included, the outer frame is formed with a shaft sleeve, and the shell is installed in the shaft sleeve.

[0013] According to some embodiments of the utility model, a fan blade is further included, wherein the fan blade has a rotating shaft, and an annular groove is provided on the radial outer surface of the rotating shaft, and the rotating shaft is buckled with the buckle portion through the annular groove.

[0014] According to some embodiments of the utility model, a bearing is arranged inside the sleeve, the bearing is located on a side of the housing close to the fan blade, and the sleeve is rotatably connected to the rotating shaft through the bearing.

[0015] A magnetic attraction component and a heat dissipation fan according to an embodiment of the utility model have at least the following beneficial effects:

[0016] The utility model provides a shell, the interior of the shell can accommodate the magnetic attraction member and the buckle ring, so that the magnetic attraction member is installed in the accommodating cavity, the limiting cavity inside the shell can accommodate the buckle ring, and the outer circumference of the buckle ring matches the limiting cavity, so that the buckle ring will not be tilted after being set in the limiting cavity, ensuring that the buckle portion of the buckle ring is smoothly buckled with the rotating shaft. Furthermore, the diameter of the limiting cavity is larger than the diameter of the opening and the accommodating cavity, which means that the buckle ring will not be loose. The shell, the magnetic attraction member and the buckle ring form a whole and will not be loose, which is convenient for the transfer, transportation and storage of the magnetic attraction component. The magnetic attraction component can be produced in advance and installed as a whole in the shaft sleeve of the heat dissipation fan, without the need to adopt the traditional method of placing the shell, the magnetic attraction member and the buckle ring into the shaft sleeve one by one, avoiding the phenomenon of tilting and skewing during the installation of the shell, the magnetic attraction member and the buckle ring, solving the problem that the inside of the shaft sleeve is deep and difficult to assemble, greatly reducing the difficulty of assembly, reducing the defects in the assembly process, and improving the assembly efficiency. It can also be sent to an external manufacturer for processing, reducing the configuration of operating personnel in the factory, which is conducive to reducing production costs.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the structure of a magnetic attraction component and a heat dissipation fan according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic structural diagram of a magnetic attraction component is shown.

[0021] Figure numerals: 100 - shell, 110 - opening, 120 - limiting cavity, 130 - accommodating cavity, 140 - magnetic element, 150 - buckle, 160 - buckle part, 170 - wear-resistant sheet, 180 - annular part, 190 - outer frame, 200 - sleeve, 210 - fan blade, 220 - rotating shaft, 230 - annular groove, 240 - bearing. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] A magnetic attraction component and a heat dissipation fan according to an embodiment of the utility model are described below in conjunction with the accompanying drawings.

[0027] Reference Figure 1 and Figure 2 A heat dissipation fan of an embodiment of the utility model includes a magnetic attraction component, which includes a shell 100, a magnetic attraction member 140 and a buckle 150. The shell 100 is provided with an opening 110, a limiting cavity 120 and an accommodating cavity 130 in sequence along the depth direction. The diameter of the limiting cavity 120 is larger than the diameters of the opening 110 and the accommodating cavity 130; the magnetic attraction member 140 is installed in the accommodating cavity 130 to attract the rotating shaft 220 of the fan blade 210; the buckle 150 is installed in the limiting cavity 120, and the outer periphery of the buckle 150 matches the limiting cavity 120. A buckle portion 160 is provided inside the buckle 150, and the buckle portion 160 is used to buckle with the rotating shaft 220 of the fan blade 210.

[0028] It should be noted that the magnetic attraction member 140 is made of magnetic material.

[0029] In some embodiments of the present invention, a wear-resistant sheet 170 is further included. The wear-resistant sheet 170 is disposed in the accommodating cavity 130 , and the wear-resistant sheet 170 is located on a side of the magnetic element 140 close to the buckle 150 .

[0030] Therefore, the magnetic component 140 and the wear-resistant sheet 170 are sequentially placed in the accommodating cavity 130 of the shell 100, and then installed in the limiting cavity 120 using the buckle 150. The buckle 150 can prevent the wear-resistant sheet 170 from escaping from the inside of the shell 100, which is beneficial to the transfer, transportation and storage of the magnetic component.

[0031] At the same time, the wear-resistant sheet 170 can prevent the rotating shaft 220 and the magnetic element 140 from directly contacting each other, thereby reducing friction.

[0032] In some embodiments of the present invention, the magnetic member 140 is cylindrical, and the outer circumference of the magnetic member 140 matches the interior of the accommodating cavity 130, thereby facilitating the placement of the magnetic member 140 into the accommodating cavity 130 and preventing the installation position of the magnetic member 140 from being offset.

[0033] In some embodiments of the present invention, the housing 100 has an annular portion 180 , and the annular portion 180 extends in an annular manner along the outer circumference of the housing 100 to form a limiting cavity 120 .

[0034] Since the inner cavity of the housing 100 is relatively deep, the annular portion 180 is beneficial for improving the strength of the housing 100 and reducing deformation of the housing 100 .

[0035] In some embodiments of the present invention, an outer frame 190 is included. The outer frame 190 is formed with a shaft sleeve 200 , and the housing 100 is installed in the shaft sleeve 200 .

[0036] It can be understood that after the magnetic attraction component is assembled, the entire magnetic attraction component is pressed into the interior of the sleeve 200, and the shell 100 is matched with the interior of the sleeve 200 to avoid tilting or skewing of the shell 100, the magnetic attraction component 140 and the buckle 150 during installation, thereby solving the problem that the interior of the sleeve 200 is deep and difficult to assemble, and greatly reducing the difficulty of assembly.

[0037] In some embodiments of the utility model, a fan blade 210 is further included. The fan blade 210 has a rotating shaft 220 . An annular groove 230 is provided on the radial outer surface of the rotating shaft 220 . The rotating shaft 220 is buckled with the buckle portion 160 through the annular groove 230 .

[0038] Therefore, the rotating shaft 220 can pass through the interior of the buckle 150 , and the rotating shaft 220 is buckled with the buckle portion 160 of the buckle 150 through the annular groove 230 , so that the rotating shaft 220 will not be separated from the buckle 150 during the rotation process.

[0039] In some embodiments of the utility model, a bearing 240 is provided inside the sleeve 200, and the bearing 240 is located on the side of the shell 100 close to the fan blade 210. The sleeve 200 is rotatably connected to the rotating shaft 220 through the bearing 240, thereby ensuring that the rotating shaft 220 rotates smoothly with less wear. At the same time, the bearing 240 can limit the shell 100 in the sleeve 200.

[0040] Therefore, this embodiment has the following effects:

[0041] The interior of the shell 100 can accommodate the magnetic element 140, the wear-resistant sheet 170 and the buckle 150, so that the magnetic element 140 and the wear-resistant sheet 170 are installed in the accommodating cavity 130 in sequence, and the limiting cavity 120 inside the shell 100 can accommodate the buckle 150, and the outer periphery of the buckle 150 matches the limiting cavity 120, so that the buckle 150 will not be tilted after being set in the limiting cavity 120, ensuring that the buckle portion 160 of the buckle 150 is smoothly buckled with the rotating shaft 220. Furthermore, the diameter of the limiting cavity 120 is larger than the diameter of the opening 110 and the accommodating cavity 130, so that the buckle 150 will not get loose, and the shell 100, the wear-resistant sheet 170, the magnetic element 140 and the buckle 150 form a As a whole, there will be no looseness, which facilitates the transfer, transportation and storage of the magnetic suction component. The magnetic suction component can be produced in advance and installed as a whole in the shaft sleeve 200 of the heat dissipation fan. There is no need to adopt the traditional method of placing the shell 100, the magnetic suction component 140, the wear-resistant sheet 170 and the buckle 150 into the shaft sleeve 200 one by one. The shell 100, the magnetic suction component 140, the wear-resistant sheet 170 and the buckle 150 are avoided from tilting and skewing during the installation process, and the problem that the inside of the shaft sleeve 200 is deep and difficult to assemble is solved, which greatly reduces the difficulty of assembly, reduces the defects in the assembly process, improves the assembly efficiency, and can also be sent to external manufacturers for processing, reducing the number of operating personnel in the factory, which is conducive to reducing production costs.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A magnetic attraction component, characterized in that: include: A shell (100), wherein an opening (110), a limiting cavity (120), and a receiving cavity (130) are sequentially formed inside the shell (100) along a depth direction, and the diameter of the limiting cavity (120) is larger than the diameters of the opening (110) and the receiving cavity (130); A magnetic attraction member (140), the magnetic attraction member (140) being installed in the accommodating cavity (130) and being used to attract the rotating shaft (220) of the fan blade (210); A buckle ring (150), the buckle ring (150) is installed in the limiting cavity (120), and the outer periphery of the buckle ring (150) matches the limiting cavity (120), and a buckle portion (160) is provided inside the buckle ring (150), and the buckle portion (160) is used to buckle with the rotating shaft (220) of the fan blade (210).

2. A magnetic attraction assembly according to claim 1, characterized in that: It also includes a wear-resistant sheet (170), which is arranged in the accommodating cavity (130), and the wear-resistant sheet (170) is located on a side of the magnetic attraction component (140) close to the buckle (150).

3. A magnetic attraction assembly according to claim 1, characterized in that: The magnetic attraction member (140) is cylindrical, and the outer circumference of the magnetic attraction member (140) matches the interior of the accommodating cavity (130).

4. The magnetic attraction assembly according to claim 1, characterized in that: The housing (100) has an annular portion (180), and the annular portion (180) extends in an annular manner along the outer circumference of the housing (100) to form the limiting cavity (120).

5. A cooling fan, characterized in that: A magnetic attraction component comprising any one of claims 1 to 4.

6. A heat dissipation fan according to claim 5, characterized in that: It comprises an outer frame (190), the outer frame (190) is formed with a shaft sleeve (200), and the housing (100) is installed in the shaft sleeve (200).

7. A heat dissipation fan according to claim 6, characterized in that: Also includes a fan blade (210), The fan blade (210) has a rotating shaft (220), and a radial outer surface of the rotating shaft (220) is provided with an annular groove (230), and the rotating shaft (220) is buckled with the buckle portion (160) through the annular groove (230).

8. A heat dissipation fan according to claim 7, characterized in that: A bearing (240) is disposed inside the shaft sleeve (200), and the bearing (240) is located on a side of the housing (100) close to the fan blade (210). The shaft sleeve (200) is rotatably connected to the rotating shaft (220) via the bearing (240).

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