Fan outer frame structure with embedded magnets

Abstract

The utility model discloses an embedded magnet fan outer frame structure which comprises a frame body and a samarium cobalt magnet, and the samarium cobalt magnet is embedded at the bottom of a rotating shaft cavity of the frame body. According to the utility model, the structural design is reasonable, the samarium-cobalt magnet is pre-embedded in the frame body mold corresponding to the bottom position of the rotating shaft cavity before the frame body is subjected to injection molding, and the samarium-cobalt magnet can be positioned and fixed on the outer frame after the frame body is subjected to injection molding and curing, so that the structure is effectively simplified, a traditional magnetic cap part is not needed, and the cost is reduced; the follow-up magnetic sheet assembling procedure is omitted, the problem of poor manual operation such as missing and excessive placement of magnetic sheets, inclined placement and non-in-place placement is completely eradicated, the labor cost and the poor problem can be greatly reduced, and the productivity is improved; and the samarium-cobalt magnet is good in high-temperature-resistant effect, when the temperature reaches 260 DEG C during injection molding of the outer frame, the magnetism of the samarium-cobalt magnet does not fade, the magnetic attraction effect on the axis of the fan blade is ensured, the fan blade is prevented from falling off when the fan runs and is inverted, and the structural stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a pre-embedded magnet fan outer frame structure applied to a fan. Background Art

[0002] When the fan blades of the existing cooling fan rotate, a turbulent flow effect will be generated, and the air flow will generate an upward pulling force on the fan blades and the shaft center, resulting in axial oscillation and instability when the shaft center rotates, and noise will also be generated.

[0003] To solve the above problems, as Figure 1 shown, the industry generally uses a magnetic conductive cap to enclose and inject it into the outer frame, and then sucks in the magnetic sheet. Because the commonly used magnetic sheet material (sintered neodymium iron boron) in the industry at present cannot withstand high temperatures, the high temperature during the injection molding process will cause the magnetic sheet to demagnetize. Therefore, generally, the magnetic conductive cap 1 is enclosed and injected into the outer frame 2, and the magnetic sheet 3 is placed in the magnetic conductive cap 1 during use. During operation, the magnetic sheet 3 generates a suction force on the shaft center 4 of the fan blade to adsorb the fan blade in the outer frame 2. Although it can prevent the fan blade from falling off during operation and inversion, improve the rotation stability, but it is necessary to add a magnetic conductive cap component, with high cost, and it also requires an artificial assembly process for the magnetic sheet, which requires labor cost and low production efficiency, and it is easy to install the magnetic sheet crooked or missed during manual installation, resulting in defective products, and it is difficult to ensure the product quality. Content of the Utility Model

[0004] Aiming at the above deficiencies, the purpose of the utility model is to provide a pre-embedded magnet fan outer frame structure with reasonable structural design, eliminating the traditional magnetic conductive cap structure, low cost, and easy to assemble.

[0005] To achieve the above purpose, the technical solution provided by the utility model is:

[0006] A pre-embedded magnet fan outer frame structure, which includes a frame body and a samarium cobalt magnet. A rotating shaft cavity is provided on the frame body, and the samarium cobalt magnet is pre-embedded at the bottom of the rotating shaft cavity.

[0007] As a preferred solution of the utility model, a fixed cavity adapted to the outer contour of the samarium cobalt magnet is formed at the bottom of the rotating shaft cavity, with a tight fit to prevent the samarium cobalt magnet from shifting or falling off during use.

[0008] As a preferred solution of the utility model, the outer dimension of the fixed cavity is larger than that of the rotating shaft cavity, with a good limiting effect on the samarium cobalt magnet.

[0009] As a preferred solution of the utility model, the samarium cobalt magnet is of the 1:5 (SmCo5) type or the 2:17 type (Sm2Co 17), it has a strong magnetic force and good thermal stability. When the temperature reaches 260°C during the injection molding of the outer frame, the magnetism will not fade, and it can play a role in magnetically attracting the axis in the fan blade.

[0010] As a preferred embodiment of the present utility model, a gasket is provided on the upper surface of the samarium-cobalt magnet to prevent damage or wear to the samarium-cobalt magnet caused by the axis during assembly or rotation.

[0011] The beneficial effects of the present utility model are as follows: The structure of the present utility model is reasonably designed. Before the injection molding of the frame body, the samarium-cobalt magnet is pre-buried in the frame body mold at the bottom position corresponding to the rotating shaft cavity. After the injection molding and curing of the frame body, the samarium-cobalt magnet can be positioned and fixed at the bottom position of the rotating shaft cavity, effectively simplifying the structure, eliminating the need for traditional magnetic conductive cap components, reducing costs, and eliminating the subsequent magnetic sheet assembly process, preventing problems such as incorrect manual operation, such as missing or excessive placement of magnetic sheets, misplacement, and improper placement, which can greatly reduce labor costs and defective problems and improve production capacity; moreover, the samarium-cobalt magnet has good high-temperature resistance. When the temperature reaches 260°C during the injection molding of the outer frame, the magnetism of the samarium-cobalt magnet will not fade, ensuring the magnetic attraction effect on the fan blade axis, preventing the fan blade from falling off during fan operation and inversion, and having good structural stability.

[0012] The following further describes the present utility model in conjunction with the accompanying drawings and embodiments. Description of the Drawings

[0013] Figure 1 is a structural schematic diagram of a traditional fan.

[0014] Figure 2 is a structural schematic diagram of the present utility model. Detailed Embodiment

[0015] Embodiment, refer to Figure 2 , a pre-buried magnet fan outer frame structure provided in this embodiment includes a frame body 1 and a samarium-cobalt magnet 2. The samarium-cobalt magnet 2 is of the 1:5 (SmCo5) type or the 2:17 type (Sm2Co 17 ), it has a strong magnetic force and good thermal stability. When the temperature reaches 260°C during the injection molding of the outer frame, the magnetism will not fade, and it can play a role in magnetically attracting the axis in the fan blade.

[0016] The frame body 1 is provided with a rotating shaft cavity 11. Before the frame body 1 is injection-molded, the samarium cobalt magnet 2 is embedded in the mold of the frame body 1 at the bottom position corresponding to the rotating shaft cavity 11. After the frame body 1 is injection-molded and cured, a fixing cavity adapted to the outer contour of the samarium cobalt magnet 2 is formed at the bottom of the rotating shaft cavity 11, with a tight fit to prevent the samarium cobalt magnet 2 from shifting or falling off during use. The samarium cobalt magnet 2 can be positioned and fixed at the bottom position of the rotating shaft cavity 11 through the fixing cavity, achieving the purpose of embedding the samarium cobalt magnet 2 at the bottom position of the rotating shaft cavity 11. Preferably, the outer dimension of the fixing cavity is larger than that of the rotating shaft cavity 11, providing a good limiting effect on the samarium cobalt magnet 2.

[0017] Preferably, a gasket 3 is provided on the upper surface of the samarium cobalt magnet 2 to prevent the fan blade axis 4 from damaging or wearing the samarium cobalt magnet 2 during assembly or rotation, with a good protection effect and an extended service life.

[0018] During production, since the samarium cobalt magnet 2 is used, it has a good high-temperature resistance effect. Although the temperature during the injection molding of the outer frame reaches 260°, it will not cause the magnetic property of the samarium cobalt magnet 2 to fade. Therefore, the samarium cobalt magnet 2 can be directly embedded in the mold of the frame body 1. After the frame body 1 is injection-molded, the samarium cobalt magnet 2 is automatically positioned and fixed at the bottom position of the rotating shaft cavity 11, effectively simplifying the structure, eliminating the need for traditional magnetic conductive cap components, reducing costs, and omitting the subsequent magnetic sheet assembly process, eliminating problems caused by improper manual operations, such as missing or over-placing magnetic sheets, placing them crooked, or not placing them in place, which can greatly reduce labor costs and defective problems, with high production efficiency.

[0019] During operation, the samarium cobalt magnet 2 continuously generates a magnetic attraction effect on the fan blade axis 4, effectively preventing the fan blades from falling off during operation and inversion, with good structural stability.

[0020] According to the disclosure and teachings of the above specification, those skilled in the art of the present invention can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other fans obtained by adopting the same or similar structures are all within the protection scope of the present invention.

Claims

1. An embedded magnet fan outer frame structure, which includes a frame body, and is characterized in that: It also includes a samarium cobalt magnet. A rotating shaft cavity is provided on the frame body, and the samarium cobalt magnet is embedded at the bottom of the rotating shaft cavity; The bottom of the rotating shaft cavity forms a fixing cavity adapted to the outer contour of the samarium cobalt magnet; The outer dimension of the fixing cavity is larger than that of the rotating shaft cavity.

2. The embedded magnet fan outer frame structure according to claim 1, characterized in that: The samarium cobalt magnet is of the 1:5 type or the 2:17 type.

3. The embedded magnet fan outer frame structure according to any one of claims 1-2, characterized in that: A gasket is provided on the upper surface of the samarium cobalt magnet.

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