Low-vibration television heat dissipation fan

Abstract

The utility model discloses a low vibration's television heat dissipation fan, include: heat dissipation fan frame, including two groups of fan fixed support, two groups of fan fixed support outer wall fixed connection's inner connecting frame, eight groups of beryllium copper spring piece of inner connecting frame outer wall fixed connection, the outer fixed frame of beryllium copper spring piece outer wall fixed connection, be used for offsetting the vibration that the electric fan body generates, can through multiple shock attenuation and magnetic force suspension design, let television heat dissipation fan realize low vibration operation, motor and fan inner ring rely on magnetic force suspension no contact rotation between, eliminate friction vibration, fan fixed support and outer frame interval use beryllium copper spring piece buffer, cooperate silica gel shock pad and block transmission, still through extension connecting rod and magnetic force bearing auxiliary stabilization, solve the problem that traditional heat dissipation fan vibration conduction reaches television, and cause resonance interference viewing.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, and in particular to a low-vibration television cooling fan. Background Technology

[0002] A TV cooling fan is a small heat dissipation device designed specifically for the confined space inside a TV. By actively rotating and blowing air, the cooling fan accelerates the exchange of hot air inside the TV with cold air outside, quickly removing accumulated heat and creating a stable low-temperature working environment for the components, ensuring the TV's long-term efficient operation.

[0003] Most existing TV cooling fan motors use traditional oil-impregnated or ball bearings, which are prone to vibration due to friction during operation. In addition, the fan blades may not be dynamically balanced enough, and centrifugal vibration may occur due to the shift in the center of gravity when rotating at high speed. Furthermore, the fan and the TV are mostly rigidly connected, and the vibration is directly transmitted to the TV body, which can easily resonate with the TV casing and generate low-frequency noise that interferes with the viewing experience. In order to meet the cooling requirements, some fans need to be forcibly increased in speed, which further amplifies the vibration and noise and affects the user experience. Utility Model Content

[0004] This invention provides a low-vibration television cooling fan to solve the above-mentioned problems.

[0005] This utility model provides a low-vibration TV cooling fan, including: a cooling fan frame, including two sets of fan mounting brackets, an inner connecting frame fixedly connected to the outer wall of the two sets of fan mounting brackets, eight sets of beryllium copper springs fixedly connected to the outer wall of the inner connecting frame, and an outer fixing frame fixedly connected to the outer wall of the beryllium copper springs, used to cancel out the vibration generated by the fan body.

[0006] In a low-vibration TV cooling fan according to one embodiment of the present invention, a motor is provided on the inner wall of one of the fan mounting brackets, two sets of side blades are movably sleeved on the inner wall of the motor, a drive shaft is fixedly connected to the opposite side of the two sets of side blades, a fan inner ring is fixedly connected to the outer wall of the drive shaft, and multiple sets of fan blades are fixedly connected to the outer wall of the fan inner ring.

[0007] In a low-vibration TV cooling fan according to an embodiment of the present invention, a magnetic bearing II is fixedly sleeved on the outer wall of the motor, and a magnetic patch is movably sleeved on the outer side of the magnetic bearing II. The outer wall of the magnetic patch is in contact with the inner wall of the inner ring of the fan.

[0008] In a low-vibration TV cooling fan according to one embodiment of the present invention, an extension rod is fixedly connected to the outer wall of the inner ring of the fan, and a magnetic bearing is movably sleeved on the outer wall of the extension rod. The outer wall of the magnetic bearing is fixedly sleeved with one of the fan mounting brackets.

[0009] In a low-vibration TV cooling fan according to one embodiment of the present invention, the beryllium copper spring is S-shaped, and multiple sets of the beryllium copper spring are arranged in a circular array with the inner ring of the fan as the center.

[0010] In a low-vibration TV cooling fan according to one embodiment of the present invention, screw holes are provided at the four corners of the outer fixing frame, and shock-absorbing pads are attached to both sides of the screw holes.

[0011] In a low-vibration TV cooling fan according to an embodiment of the present invention, the shock-absorbing pad includes two sets of supporting base rings, a raised arc frame, and a reinforcing ring. The outer walls of the two sets of supporting base rings are in contact with the outer fixing frame. The raised arc frame is triangular in shape, and both extended ends of the raised arc frame are fixedly connected to the supporting base rings. The inner wall of the raised arc frame is fixedly connected to the reinforcing ring.

[0012] The technical solution provided in this application embodiment can include the following beneficial effects: This application designs a low-vibration TV cooling fan, which can achieve low-vibration operation through multiple shock absorption and magnetic levitation design. The motor and the inner ring of the fan rotate without contact by magnetic levitation, eliminating frictional vibration. The fan mounting bracket and the outer frame are buffered by beryllium copper spring sheets, and silicone shock-absorbing pads block transmission. In addition, the extension rod and magnetic bearing are used to assist in stabilization, solving the problem of vibration transmission from traditional cooling fans to the TV and causing resonance interference with viewing.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a low-vibration television cooling fan provided in one embodiment of this application;

[0016] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0017] Figure 3 yes Figure 2 Enlarged view of part A of the structure;

[0018] Figure 4 yes Figure 1 A partial structural diagram;

[0019] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Fan mounting bracket; 2. Outer mounting frame; 3. Inner connecting frame; 4. Beryllium copper spring; 5. Shock-absorbing pad; 51. Support base ring; 52. Elevating arc frame; 53. Reinforcing ring; 6. Fan blade; 7. Magnetic bearing one; 8. Extension connecting rod; 9. Fan inner ring; 10. Drive shaft; 11. Side connecting blade; 12. Motor; 13. Magnetic patch; 14. Magnetic bearing two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] like Figures 1 to 5As shown, this application provides a low-vibration TV cooling fan, including: a cooling fan frame, including two sets of fan mounting brackets 1, an inner connecting frame 3 fixedly connected to the outer wall of the two sets of fan mounting brackets 1, eight sets of beryllium copper springs 4 fixedly connected to the outer wall of the inner connecting frame 3, and an outer fixing frame 2 fixedly connected to the outer wall of the beryllium copper springs 4, for canceling the vibration generated by the fan body.

[0026] After adopting the above technical solution, the two sets of fan mounting brackets 1 serve as the core load-bearing structure. Through the internally preset annular slots, components such as the motor 12, the inner ring of the fan 9, and the fan blades 6 are precisely fitted into the cavity to form an independent power operation unit. When the motor 12 is powered on and drives the fan blades 6 to rotate at high speed, even after dynamic balancing calibration, a small amount of periodic vibration will still be generated. These vibrations will be transmitted to the surroundings through the metal shell of the fan mounting bracket 1. At this time, the inner connecting frame 3 is tightly locked with the outer wall reinforcing ribs of the two sets of fan mounting brackets 1, integrating the scattered mounting brackets into a rigid whole, ensuring that the two sets of mounting brackets vibrate synchronously and avoid relative displacement, providing a stable foundation for subsequent vibration cancellation. The outer mounting frame 2, as the connecting carrier with the back panel of the TV, is directly fixed to the preset installation position inside the TV with screws. When the synchronous vibration of the fan mounting bracket 1 and the inner connecting frame 3 is transmitted to the beryllium copper spring 4 between them, the beryllium copper spring 4, with its high elasticity, absorbs the vibration energy through the reciprocating motion of "stretching-rebounding". The lateral vibration is canceled by the deformation of the spring in the horizontal direction, and the longitudinal vibration is buffered by the spring in the vertical direction, which ultimately greatly weakens the vibration force transmitted to the outer mounting frame 2, effectively reducing the vibration transmission between the cooling fan and the TV body, avoiding low-frequency noise generated by resonance, and significantly improving the quietness of TV viewing.

[0027] In one optional embodiment, a motor 12 is provided on the inner wall of one set of fan mounting brackets 1, and two sets of side blades 11 are movably sleeved on the inner wall of the motor 12. A drive shaft 10 is fixedly connected to the opposite side of the two sets of side blades 11, and a fan inner ring 9 is fixedly connected to the outer wall of the drive shaft 10. Multiple sets of fan blades 6 are fixedly connected to the outer wall of the fan inner ring 9.

[0028] The motor 12 is fixed inside a set of fan mounting brackets 1, and its output end is connected to the drive shaft 10 through the side connecting blade 11. When the motor is running, the kinetic energy is transmitted to the inner ring 9 of the fan in sequence through the side connecting blade 11 and the drive shaft 10, and finally drives the fan blade 6 to rotate, so as to achieve stable power transmission.

[0029] In one optional embodiment, a magnetic bearing 14 is fixedly sleeved on the outer wall of the motor 12, and a magnetic patch 13 is movably sleeved on the outer side of the magnetic bearing 14. The outer wall of the magnetic patch 13 is in contact with the inner wall of the fan inner ring 9. At the corresponding position where the outer wall of the motor 12 and the inner ring 9 are sleeved, the magnetic bearing 14 is embedded in an annular groove. This bearing uses neodymium iron boron permanent magnet material, which has a stable magnetic field strength and is resistant to high and low temperatures of -40℃ to 120℃. Simultaneously, annular magnetic patches 13 with a thickness of 0.5mm are uniformly pasted along the circumference on the inner wall of the fan inner ring 9, and the polarities of the magnetic bearing 14 and the magnetic patch 13 are strictly set to be opposite to each other. Utilizing the physical principle of "like poles repel each other," a stable magnetic repulsion field is formed between them, ensuring that the fan inner ring 9 and the outer wall of the motor 12 always maintain a 0.1-0.3mm suspension gap, resulting in a completely non-contact state. This design completely abandons the friction transmission method of traditional mechanical bearings. When the inner ring 9 of the fan rotates, it does not need to make physical contact with the motor 12. This avoids the life reduction caused by bearing wear and eliminates the high-frequency vibration and noise generated by friction from the root, laying the core foundation for low vibration effect.

[0030] In one optional embodiment, an extension link 8 is fixedly connected to the outer wall of the inner ring 9 of the fan, and a magnetic bearing 7 is movably sleeved on the outer wall of the extension link 8. The outer wall of the magnetic bearing 7 is fixedly sleeved with one of the fan mounting brackets 1.

[0031] To further enhance the stability of the inner fan ring 9 during rotation and prevent wobbling caused by unilateral force, an extension rod 8 is connected to the outer wall of the inner fan ring 9. The extension rod 8 is made of lightweight, high-strength aerospace-grade aluminum alloy, with a diameter of 3mm and an anodized surface. One end is fixed to the reinforcing block on the outer wall of the inner fan ring 9 using an internal hexagonal screw, and the other end extends to a pre-set support groove on the inner wall of the fan mounting bracket 1 on the other side. Simultaneously, a magnetic bearing 7 of the same specifications as magnetic bearing 14 is installed between the end of the extension rod 8 and the support groove of the fan mounting bracket 1. The fixed end of magnetic bearing 7 is embedded in the support groove of the fan mounting bracket 1, and the movable end forms a magnetic repulsion with the magnetic block at the end of the extension rod 8. This provides uniform radial support force to the non-powered end of the inner fan ring 9 without mechanical contact, ensuring that the radial runout of the inner fan ring 9 is controlled within 0.02mm at normal operating speeds, completely avoiding additional vibration caused by unilateral wobbling, and allowing the fan blades 6 to maintain a stable rotation trajectory.

[0032] In one optional embodiment, the beryllium copper spring 4 is S-shaped, and multiple sets of beryllium copper springs 4 are arranged in a circular array with the inner ring 9 of the fan as the center. The four sets of beryllium copper springs 4 are fixed to the inner wall of the outer fixed frame 2 in four directions (up, down, left, and right) by spot welding, and the other end of the spring is locked to the connecting seat on the outer wall of the inner connecting frame 3 by screws. The beryllium copper spring 4 is made of high-elasticity beryllium copper alloy with a thickness of 0.3 to 0.5 mm, and is precision stamped into an "S" shaped bending structure with a bending angle of 45° and a stable springback coefficient. When the inner connecting frame 3 causes the fan mounting bracket 1 to vibrate, the vibration force in different directions will be transmitted to the beryllium copper spring 4 on the same side: the horizontal vibration will cause the spring to deform along the horizontal axis, and the vertical vibration will trigger the spring to deform along the vertical axis. Through the elastic potential energy conversion of the spring, more than 80% of the vibration energy is consumed. When the cooling fan is stationary or in a low speed and low vibration state, the rigidity of the beryllium copper spring 4 can stably connect the outer mounting frame 2 and the inner connecting frame 3, avoiding positional displacement caused by structural loosening, and taking into account both shock absorption effect and structural stability.

[0033] In one optional embodiment, screw holes are provided at each of the four corners of the outer fixing frame 2, and shock-absorbing pads 5 are attached to both sides of the screw holes. The shock-absorbing pads 5 include two sets of supporting bottom rings 51, a lifting arc frame 52, and a reinforcing ring 53. The outer walls of the two sets of supporting bottom rings 51 are attached to the outer fixing frame 2. The lifting arc frame 52 is triangular, and its two extended ends are fixedly connected to the supporting bottom rings 51. The inner wall of the lifting arc frame 52 is fixedly connected to the reinforcing ring 53.

[0034] The damping pad 5 is made of high-elasticity silicone and consists of a three-layer composite structure. The bottom layer is a support ring 51, 2mm thick with an anti-slip textured surface. It adheres perfectly to the bottom of the outer frame 2 using 3M adhesive, significantly improving support stability. The middle layer is a raised arc frame 52, whose triangular structure provides ample room for silicone deformation while distributing stress and preventing localized compression deformation. The top layer is a reinforcing ring 53, featuring an embedded design that seals the hollow area inside the raised arc frame 52. It is also integrated with the raised arc frame 52 using a one-piece silicone molding process, enhancing the arc frame's resistance to compression. When the outer frame 2 still transmits a small amount of vibration, the damping pad 5 further absorbs the vibration potential energy through the elastic deformation of the silicone, completely blocking the transmission of vibration to the TV body, ultimately achieving low-vibration operation of the cooling fan.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A low-vibration television cooling fan, characterized in that, include: The cooling fan frame includes two sets of fan mounting brackets (1), an inner connecting frame (3) fixedly connected to the outer wall of the two sets of fan mounting brackets (1), eight sets of beryllium copper springs (4) fixedly connected to the outer wall of the inner connecting frame (3), and an outer fixing frame (2) fixedly connected to the outer wall of the beryllium copper springs (4), which is used to counteract the vibration generated by the fan body.

2. The low-vibration television cooling fan according to claim 1, characterized in that, One of the fan mounting brackets (1) has a motor (12) installed on its inner wall. Two sets of side blades (11) are movably sleeved on the inner wall of the motor (12). A drive shaft (10) is fixedly connected to the opposite side of the two sets of side blades (11). A fan inner ring (9) is fixedly connected to the outer wall of the drive shaft (10). Multiple sets of fan blades (6) are fixedly connected to the outer wall of the fan inner ring (9).

3. A low-vibration television cooling fan according to claim 2, characterized in that, A magnetic bearing (14) is fixedly sleeved on the outer wall of the motor (12), and a magnetic patch (13) is movably sleeved on the outer side of the magnetic bearing (14). The outer wall of the magnetic patch (13) is in contact with the inner wall of the inner ring (9) of the fan.

4. A low-vibration television cooling fan according to claim 2, characterized in that, An extension rod (8) is fixedly connected to the outer wall of the inner ring (9) of the fan. A magnetic bearing (7) is movably sleeved on the outer wall of the extension rod (8). The outer wall of the magnetic bearing (7) is fixedly sleeved with one of the fan mounting brackets (1).

5. A low-vibration television cooling fan according to claim 1, characterized in that, The beryllium copper spring (4) is S-shaped, and multiple sets of the beryllium copper spring (4) are arranged in a circular array with the inner ring (9) of the fan as the center.

6. A low-vibration television cooling fan according to claim 1, characterized in that, The four corners of the outer fixing frame (2) are provided with screw holes, and shock-absorbing pads (5) are attached to both sides of the screw holes.

7. A low-vibration television cooling fan according to claim 6, characterized in that, The shock-absorbing pad (5) includes two sets of supporting bottom rings (51), a raised arc frame (52), and a reinforcing ring (53). The outer walls of the two sets of supporting bottom rings (51) are in contact with the outer fixed frame (2). The raised arc frame (52) is triangular. Both extended ends of the raised arc frame (52) are fixedly connected to the supporting bottom rings (51). The inner wall of the raised arc frame (52) is fixedly connected to the reinforcing ring (53).

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