A fan with double ball-belt damping function

Abstract

The utility model discloses a double ball belt shock attenuation function's fan, it relates to fan technical field. The fan blade is installed in the fan frame, and the middle part of fan blade is fixed with the top end of axle core, and the first bearing, second bearing, spring are installed on the axle core, and the first bearing, second bearing are all ball bearings, and the spring is installed between the first bearing and second bearing, and the other end of axle core is connected with the conical base, and the gasket is installed between the conical base and the first bearing, the conical base is clamped in the conical hole of the middle part of fan frame through the conical structure, and the both sides of conical base are equipped with the boss, and the avoidance groove is still set up on the conical base, and the avoidance arc surface on the conical base forms the avoidance structure with the both sides of conical hole when clamping. The utility model discloses stable structure, and the assembly is convenient, and the concentricity is high, can effectively reduce the vibration in the operation process, guarantees the heat dissipation effect of fan, improves fan overall operation stability, and the application prospect is broad.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, specifically to a dual ball bearing fan with shock absorption function. Background Technology

[0002] Most cooling fans on the market currently use a one-piece injection molding structure, which is not only complex to assemble, but also makes it difficult to achieve a high level of concentricity of the shaft. This causes the fan to wobble during operation, affecting its cooling performance and compromising overall operational stability. Therefore, it is particularly necessary to design a new type of dual ball bearing fan with shock absorption function. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a fan with double ball bearings and shock absorption function. It has a stable structure, reasonable design, convenient assembly, and high concentricity. It can effectively reduce vibration during operation, ensure the heat dissipation effect of the fan, improve the stability of fan operation, and is easy to promote and use.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a fan with double ball bearings and shock absorption function, comprising fan blades, a fan frame, a conical base, a shaft, a first bearing, a second bearing, a spring, and a washer. The fan blades are installed in the fan frame, and the middle part of the fan blades is fixed to the top of the shaft. The shaft is equipped with the first bearing, the second bearing, and the spring. The first bearing and the second bearing are both ball bearings. The spring is installed between the first bearing and the second bearing. The other end of the shaft is connected to the conical base. A washer is installed between the conical base and the first bearing. The conical base is snapped into the conical hole in the middle of the fan frame through a conical structure. The two sides of the conical base are provided with bosses, and the conical base is also provided with clearance grooves. When snapped in, the clearance arc surface on the conical base and the two sides of the conical hole form a clearance structure.

[0005] Preferably, the conical hole is provided with a conical groove corresponding to the boss, and the conical base is engaged in the conical groove by the bosses on both sides.

[0006] Preferably, the anti-cavity groove is a U-shaped groove, which can generate tension during snapping, improve the clamping force, and at the same time, its edges are soft and have good elastic potential energy.

[0007] Preferably, the angle between the conical inclined surface of the conical base and the horizontal plane is 95-110°, so that the conical arc surface and the conical hole can fit precisely, ensuring the stability of the installation.

[0008] Preferably, the open arc surface of the conical base is adapted to the inner wall contour of the conical hole, so that it can fit precisely when snapped together.

[0009] The beneficial effects of this utility model are: the device has a stable structure, is easy to assemble, has high concentricity, can effectively reduce vibration during operation, ensure the heat dissipation effect of the fan, greatly improve the overall operational stability of the fan, and has broad application prospects. Attached Figure Description

[0010] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0011] Figure 1 This is an exploded structural diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the cone base of this utility model;

[0014] Figure 4 This is a schematic diagram of the planar structure of the present invention;

[0015] Figure 5 for Figure 4 The left view;

[0016] Figure 6 for Figure 4 A bottom view;

[0017] Figure 7 for Figure 4 Sectional view of plane AA;

[0018] Figure 8 for Figure 4 BB section view. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Reference Figure 1-8This specific embodiment adopts the following technical solution: A fan with double ball bearings and shock absorption function includes a fan blade 1, a fan frame 2, a conical base 3, a shaft core 4, a first bearing 5, a second bearing 6, a spring 7, and a washer 8. The fan blade 1 is installed in the fan frame 2, and the middle part of the fan blade 1 is fixed to the top of the shaft core 4. The first bearing 5, the second bearing 6, and the spring 7 are installed on the shaft core 4. The first bearing 5 and the second bearing 6 are both ball bearings. The spring 7 is installed between the first bearing 5 and the second bearing 6. The other side of the shaft core 4... The end is connected to the conical base 3. A gasket 8 is installed between the conical base 3 and the first bearing 5. The conical base 3 is snapped into the conical hole 9 in the middle of the fan frame 2 through a conical structure. The conical base 3 has protrusions 10 on both sides and clearance grooves 11 on the conical base 3. When snapped, the clearance arc surface 12 on the conical base 3 and the two sides of the conical hole 9 form a clearance structure. The conical hole 9 is provided with conical grooves 13 corresponding to the protrusions 10. The conical base 3 is snapped into the conical grooves 13 through the protrusions 10 on both sides.

[0021] It is worth noting that the angle between the conical inclined surface of the conical base 3 and the horizontal plane is 95-110°, which allows the conical arc surface to fit precisely with the conical hole, ensuring the stability of the installation.

[0022] Furthermore, the open arc surface 12 of the conical base 3 is adapted to the inner wall contour of the conical hole 9, and can fit precisely with it when snapped together.

[0023] In this specific embodiment, a conical structure with a clearance arc is provided at the bottom of the fan. Through a unique conical assembly structure, the conical base 3 is centrally clamped and fixedly connected to the base of the fan frame 2, achieving a good fixing effect. When the conical base 3 engages with the conical hole 9, the clearance arc surface 12 on the edge of the conical base 3 precisely avoids the sides of the conical hole 9, making the overall installation most stable. The clearance groove 11 adopts a U-shaped groove. This U-shaped structure can generate radial elastic tension when the conical base 3 engages with the conical hole 9, improving the clamping force. Simultaneously, its edges are soft, possessing good elastic potential energy.

[0024] This specific embodiment features two bearings, one above the other, and a spring 7 in the middle. A straight line is determined by these two points, ensuring that the shaft core 4 maintains precise concentric rotation during its rotation. The spring 7, a helical compression spring, continuously applies axial preload to the first bearing 5 and the second bearing 6 to balance the radial wobble generated during the shaft core 4's rotation, preventing fan vibration and providing excellent shock absorption, thus ensuring overall stability. Simultaneously, a shim 8 ensures that the spring 7 is compressed to its optimal working range, generating a suitable preload. This preload is simultaneously transmitted to the first bearing 5 and the second bearing 6, ensuring that the two bearings are ultimately pressed tightly against the positioning point, guaranteeing the radial stability of the shaft core 4 and improving initial concentricity. The shim 8 also ensures that the spring 7 is always in a ready state, responding instantly and continuously providing a buffering effect. Furthermore, the shim 8 evenly distributes the concentrated force applied at the fixed point to the bearing end face below, dispersing bearing pressure and reducing abnormal wear.

[0025] This specific embodiment does not require one-piece injection molding. Simply place the bearing, spring, and gasket into the cone hole in sequence, and then clamp the cone base into the cone hole to achieve overall assembly. The structure is easy to assemble and has the advantages of high concentricity, good stability, and high production efficiency, and has broad market application prospects.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fan with dual ball bearings and shock absorption function, characterized in that, The fan assembly includes a fan blade (1), a fan frame (2), a conical base (3), a shaft core (4), a first bearing (5), a second bearing (6), a spring (7), and a washer (8). The fan blade (1) is installed in the fan frame (2), and the middle part of the fan blade (1) is fixed to the top of the shaft core (4). The first bearing (5), the second bearing (6), and the spring (7) are installed on the shaft core (4). The first bearing (5) and the second bearing (6) are both ball bearings. The spring (7) is installed between the first bearing (5) and the second bearing (6). Between the bearings (6), the other end of the shaft core (4) is connected to the conical base (3). A gasket (8) is installed between the conical base (3) and the first bearing (5). The conical base (3) is snapped into the conical hole (9) in the middle of the fan frame (2) through a conical structure. The two sides of the conical base (3) are provided with bosses (10). The conical base (3) is also provided with a clearance groove (11). When snapped, the clearance arc surface (12) on the conical base (3) and the two sides of the conical hole (9) form a clearance structure.

2. A fan with dual ball bearings and shock absorption function according to claim 1, characterized in that, The conical hole (9) is provided with a conical groove (13) corresponding to the boss (10), and the conical base (3) is engaged in the conical groove (13) by the bosses (10) on both sides.

3. A fan with dual ball bearings and shock absorption function according to claim 1, characterized in that, The aforementioned air-proof groove (11) adopts a U-shaped groove.

4. A fan with dual ball bearings and shock absorption function according to claim 1, characterized in that, The angle between the conical inclined surface of the conical base (3) and the horizontal plane is 95-110°.

5. A fan with dual ball bearings and shock absorption function according to claim 1, characterized in that, The open arc surface (12) of the conical base (3) is adapted to the inner wall contour of the conical hole (9) and fits against it when snapped together.

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