Fan with insulation protection structure

Abstract

The utility model discloses a fan with an insulation protection structure, which comprises fan blades, a motor component, an aluminum base, a PCB (printed circuit board) and a shaft core, and a gap is arranged between the bottom edge of a motor shell of the motor component and the upper edge of the aluminum base; a protective ring is arranged along the inner wall of the circumferential face of the upper portion of the aluminum base, the protective ring protrudes upwards out of the upper edge of the aluminum base and crosses the bottom edge of the motor shell so as to cover a gap between the aluminum base and the motor shell, and the protective ring covers the outer side of the lower portion of the motor shell so that the bottom end of the motor shell can be contained in the protective ring. The protective ring is arranged on the upper portion of the aluminum base along the inner side wall of the aluminum base, extends to the position crossing the bottom edge of the motor shell and is located on the outer side of the motor shell, so that a shielding structure for a gap between the motor shell and the aluminum base is formed, external impurities such as dust and greasy dirt are prevented from entering a motor assembly and a PCB, and the service life of the motor assembly is prolonged. The protection effect can be achieved through simple structural improvement.

Description

Technical Field

[0001] The utility model relates to the technical field of fans and blowers, and in particular to a fan / blower which is mainly used for heat dissipation in products such as game consoles and computer cases. Background Art

[0002] Fans (or blowers) are used in many products, such as industrial equipment, charging piles, computer cases, household appliances, etc. Their main function is to dissipate heat. Fans generally include fan blades (blades), motor components, aluminum bases, PCB boards, etc. The fan blades are installed on the motor housing of the motor assembly, and together with the motor housing, they are installed on the aluminum base through a shaft core and nuts. The PCB board is installed between the bottom of the motor assembly and the aluminum base. Since the motor housing rotates with the fan blades, and the aluminum base does not rotate, a gap needs to be left between the motor housing and the aluminum base, causing dust, water and other impurities to enter the interior through the gap. And the PCB board is close to the gap, so the impurities will have a greater impact on the PCB board after entering, especially when high voltage is applied due to strong wind force, which will cause a more obvious impact. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fan with an insulating protection structure which is simple in structure, more reasonable in design and can prevent impurities such as dust and water from entering, in view of the shortcomings of the prior art.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a fan with an insulating protection structure, including fan blades, a motor assembly, an aluminum base, a PCB board and an axis core, the fan blades and the motor assembly are installed on the aluminum base together through the axis core, nuts and balls to form a rotatable structure, and the PCB board is arranged at a position where the upper part of the aluminum base and the bottom of the motor assembly are connected; there is a gap between the bottom edge of the motor shell of the motor assembly and the upper edge of the aluminum base, and the motor shell is located within the range covered by the aluminum base, characterized in that: a circle of protective ring is arranged along the inner wall of the upper circumferential surface of the aluminum base, the protective ring protrudes upward above the upper edge of the aluminum base and passes over the bottom edge of the motor shell to cover the gap between the aluminum base and the motor shell, and the protective ring covers the lower outer side of the motor shell so that the bottom end of the motor shell is retracted into the protective ring, but there is a gap between the motor shell and the protective ring, and the width of the gap is smaller than the gap between the aluminum base and the motor shell.

[0005] Furthermore, the bottom end of the protective ring is supported by an aluminum base, and the outer wall of the protective ring is in contact with the inner wall of the aluminum base.

[0006] Furthermore, the protective ring is made of plastic material or rubber material.

[0007] Furthermore, the protective ring is arranged between the PCB board and its heat dissipation silicone layer and the side wall of the aluminum base, and the heat dissipation silicone layer is arranged on the bottom surface of the PCB board and is attached to the heat dissipation part on the aluminum base.

[0008] Furthermore, the outer wall surface of the protective ring and the inner wall of the aluminum base are fixed by adhesive, hot-melt bonding or injection molding, etc.

[0009] Furthermore, an iron washer is arranged on the nut for fixing the shaft core, an inner tooth spring piece is arranged on the iron washer, a nylon washer is arranged on the inner tooth spring piece, and the ball is pressed on the nylon washer.

[0010] The utility model arranges a protective ring on the upper part of the aluminum base along the inner wall thereof, and the protective ring extends to a position beyond the bottom edge of the motor housing and is located outside the motor housing, thereby forming a shielding structure for the gap between the motor housing and the aluminum base, preventing foreign matter such as dust and oil from entering the interior of the motor assembly and the PCB board. The utility model can play a protective and insulating role through simple structural improvement, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0012] Figure 2 It is a side schematic diagram of the utility model;

[0013] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0014] In the figure, 1 is the fan blade, 2 is the motor housing, 3 is the aluminum base, 4 is the shaft core, 5 is the PCB board, 6 is the protective ring, 7 is the heat dissipation silicone layer, 8 is the nut, 9 is the iron gasket, 10 is the ball bearing, 11 is the internal tooth spring, and 12 is the nylon gasket. DETAILED DESCRIPTION

[0015] In this embodiment, refer to Figure 1-Figure 3The fan with an insulating protective structure includes a fan blade 1, a motor assembly, an aluminum base 3, a PCB board 5 and a shaft core 4. The fan blade 1 and the motor assembly are installed on the aluminum base 1 through the shaft core 4 in cooperation with a nut 8 and a ball 10 to form a rotatable structure. The PCB board 5 is arranged at a position where the upper part of the aluminum base 3 and the bottom of the motor assembly are connected; there is a gap between the bottom edge of the motor shell 2 of the motor assembly and the upper edge of the aluminum base 3, and the motor shell 2 is located within the range covered by the aluminum base 3; a circle of protective ring 6 is arranged along the inner wall of the upper circumferential surface of the aluminum base 3, the protective ring 6 protrudes upward above the upper edge of the aluminum base 3 and crosses the bottom edge of the motor shell 2 to cover the gap between the aluminum base 3 and the motor shell 2, and the protective ring 6 covers the lower outer side of the motor shell 2 so that the bottom end of the motor shell 2 is received in the protective ring 6, but the motor shell 2 and the protective ring 6 are not in contact, but there is a gap, and the width of the gap is much smaller than the gap between the aluminum base 3 and the motor shell 2.

[0016] The bottom end of the protective ring 6 is supported by the aluminum base 3, and the outer wall of the protective ring 6 is in contact with the inner wall of the aluminum base 3 to achieve stable fixation.

[0017] The protective ring 6 is made of plastic material or rubber material.

[0018] The protective ring 6 is arranged between the PCB board 5 and its heat dissipation silicone layer 7 and the side wall of the aluminum base 3. The heat dissipation silicone layer 7 is arranged on the bottom surface of the PCB board 5 and is attached to the heat dissipation part on the aluminum base 3 to facilitate heat dissipation of the PCB board and the MOS tube module thereon.

[0019] The outer wall surface of the protective ring 6 and the inner wall of the aluminum base 3 are fixed by adhesive, hot-melt bonding or injection molding, etc.

[0020] An iron washer 9 is arranged on the nut 8 for fixing the shaft core 4 , an inner tooth spring piece 11 is arranged on the iron washer 9 , a nylon washer 12 is arranged on the inner tooth spring piece 11 , and the ball 10 is pressed on the nylon washer 12 .

[0021] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A fan with an insulating protective structure, comprising a fan blade, a motor assembly, an aluminum base, a PCB board and a shaft core, wherein the fan blade and the motor assembly are mounted on the aluminum base through the shaft core, a nut and a ball to form a rotatable structure, and the PCB board is arranged at a position where the upper part of the aluminum base and the bottom of the motor assembly are connected; there is a gap between the bottom edge of the motor shell of the motor assembly and the upper edge of the aluminum base, and the motor shell is located within the range covered by the aluminum base, characterized in that: A protective ring is arranged along the inner wall of the upper circumferential surface of the aluminum base. The protective ring protrudes upward above the upper edge of the aluminum base and passes over the bottom edge of the motor housing to cover the gap between the aluminum base and the motor housing, and the protective ring covers the lower outer side of the motor housing so that the bottom end of the motor housing is retracted into the protective ring, but there is a gap between the motor housing and the protective ring, and the width of the gap is smaller than the gap between the aluminum base and the motor housing.

2. The fan with an insulating protective structure according to claim 1, characterized in that: The bottom end of the protective ring is supported by an aluminum base, and the outer wall of the protective ring is in contact with the inner wall of the aluminum base.

3. The fan with an insulating protective structure according to claim 1, characterized in that: The protective ring is made of plastic material or rubber material.

4. The fan with an insulating protective structure according to claim 1, characterized in that: The protective ring is arranged between the PCB board and its heat dissipation silicone layer and the side wall of the aluminum base. The heat dissipation silicone layer is arranged on the bottom surface of the PCB board and is attached to the heat dissipation part on the aluminum base.

5. The fan with an insulating protective structure according to claim 1, characterized in that: The outer wall surface of the protective ring and the inner wall of the aluminum base are fixed by adhesive, hot-melt bonding or injection molding.

6. The fan with an insulating protective structure according to claim 1, characterized in that: An iron washer is arranged on a nut for fixing the shaft core, an inner tooth spring piece is arranged on the iron washer, a nylon washer is arranged on the inner tooth spring piece, and a ball is pressed on the nylon washer.

Images