A server fan convenient for maintenance

Abstract

The utility model discloses a kind of server fans convenient for maintenance, the server fan includes outer frame, fan blade, driving part and limiting component;The fan blade is placed in the inside of outer frame;The driving part is constituted by transmission part and power part;Wherein, the power part is installed on the rear surface of outer frame, and transmission part is installed on power part, rotation of transmission part is realized by power part;The limiting component is constituted by abutting piece and limiting piece;In the utility model, the conventional practice of the fan blade and motor connection or separation by direct plug-in in the past is discarded, and limiting clamping structure is used instead, the structure is designed by specific clamping and limiting, so that fan blade does not need to exert external force plug-in on motor rotating shaft when assembling or disassembling, and the design greatly simplifies disassembly process, and operator only needs to operate simply according to preset clamping direction, and fan blade can be easily disassembled and assembled.

Description

Technical Field

[0001] This utility model belongs to the field of server fan technology, and specifically relates to a server fan that is easy to maintain. Background Technology

[0002] Server fans are key heat dissipation components for high-density computing environments and 24 / 7 continuous operation requirements. Modern servers integrate a large number of high-heat-generating hardware such as CPUs and GPUs and are deployed compactly, causing internal heat to accumulate rapidly. Server fans, through forced airflow circulation, can quickly dissipate heat from heat sinks, heat pipes and other structures to the external environment, ensuring that the hardware temperature remains stable within a safe threshold. At the same time, high-end servers often adopt a multi-fan redundancy design, so even if some fans fail, the heat dissipation performance can still be maintained, thereby ensuring the stable operation of the server under long-term high load.

[0003] A fan's basic structure mainly consists of two parts: a motor and fan blades, with the blades securely mounted on the motor. The motor can be installed in various flexible positions, either internally within the fan body or externally on a specific bracket. During routine maintenance, to ensure stable fan performance, the fan blades need to be disassembled periodically for thorough cleaning of accumulated dust and impurities. It's worth noting that the motor and fan blades typically use a snap-fit ​​connection, a design that relies on a precision insertion hole at the center of the blades for secure assembly. However, frequent insertion and removal can easily cause slight vertical displacement of the motor's shaft. Over time, this can not only potentially damage the motor and shorten its lifespan but also cause the connection to gradually loosen after repeated insertions and removals, thus affecting the overall stability and efficiency of the fan. Therefore, extra care must be taken when maintaining a fan to avoid unnecessary damage. Utility Model Content

[0004] The purpose of this invention is to provide a server fan that is easy to maintain, in order to solve the problem mentioned in the background art that existing fans are prone to structural damage during maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a server fan that is easy to maintain, the server fan including an outer frame, fan blades, a drive component and a limiting component;

[0006] The fan blades are placed inside the outer frame;

[0007] The drive unit consists of a transmission part and a power part;

[0008] The power unit is mounted on the rear surface of the outer frame, and the transmission unit is mounted on the power unit, thereby enabling the rotation of the transmission unit through the power unit.

[0009] The limiting component consists of a stopper and a limiting component;

[0010] The stop member is located at the bottom of the transmission part and abuts against the bottom surface of the fan blade, while the limiting member is fixed at the top of the transmission part and abuts against the top of the fan blade.

[0011] Preferably, the power unit includes a motor, and the transmission unit is a rotating shaft. The bottom end of the rotating shaft is installed inside the motor and forms the output end of the motor. The rotating shaft passes through the outer frame to the inside of the fan blade.

[0012] Preferably, the abutting member includes a spring, a fixing plate, and a clamping plate;

[0013] The fixing plate is fixed at the bottom of the rotating shaft and is placed between the fan blade and the outer frame.

[0014] The abutting piece is positioned above the fixed piece, and the abutting piece is movably sleeved on the rotating shaft in the vertical direction;

[0015] The spring is sleeved on the outside of the rotating shaft, and the two ends of the spring abut against the fixing plate and the clamping plate, respectively.

[0016] Preferably, the fan blade includes a fan blade sleeve and blades;

[0017] The center of the fan blade sleeve shaft and the center of the outer frame are on the same vertical line, and an integral inner cylinder is fixed inside the fan blade sleeve shaft. The inner cylinder abuts against the clamping plate. During installation, the fan blade sleeve shaft is placed into the outer frame, and then the inner cylinder will squeeze the clamping plate. The clamping plate descends by squeezing the spring to meet the descent requirement of the fan blade sleeve shaft during installation. At the same time, the spring rebounds, so that the clamping plate and the inner cylinder are pressed together.

[0018] The blades are fixed at equal angles to the outer surface of the fan blade sleeve shaft, and the blades do not contact the inner wall of the outer frame. The motor drives the rotating shaft, which in turn drives the fan blade sleeve shaft, which in turn drives the blades to rotate and generate airflow, thereby cooling the server.

[0019] Preferably, the limiting component includes a limiting block and a toggle post;

[0020] The limiting block is fixed to the top surface of the rotating shaft, while the actuating column is fixed at both ends of the top of the limiting block. During subsequent disassembly and assembly, the limiting block is rotated by rotating the actuating column, thereby separating and locking it from the fan blade.

[0021] Preferably, the top of the fan blade sleeve shaft is further provided with a recessed hole, and a through hole is provided on the bottom end face of the recessed hole. The top end of the rotating shaft passes through the through hole into the interior of the recessed hole, and the limiting block also passes through the through hole. During rotation, the limiting block is misaligned with the through hole and abuts against the bottom end face of the recessed hole. When the inner cylinder presses against the clamping plate to lower the overall fan blade height, the limiting block will pass through the through hole and move onto the recessed hole. Subsequently, the limiting block and the rotating shaft are rotated by the actuating pin, achieving misalignment between the limiting block and the through hole. Then, the downward pressure of the fan blade sleeve shaft is released, and under the spring's rebound... The entire fan blade is lifted by the clamping plate. At this time, the upper and lower positions of the fan blade sleeve shaft are respectively limited and clamped by the clamping plate and the limiting block. Then it can be rotated. It is worth noting that in order to prevent the limiting block from springing back into the through hole when the rotating shaft rotates, the spring force should be greater than the centrifugal force generated by the fan blade when it rotates. That is, when the fan blade rotates, the position between the fan blade sleeve shaft and the limiting block will not change. In the later disassembly and maintenance, you only need to rotate the limiting block into the through hole, and then use the spring to pop the entire fan blade upward and separate it.

[0022] Preferably, the outer frame has holes around its perimeter, through which bolts pass.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention abandons the conventional method of connecting or separating the fan blades from the motor by direct plugging and unplugging. Instead, it adopts a limiting and locking structure. This structure, through a specific locking and limiting design, eliminates the need to apply external force to the motor shaft during fan blade assembly or disassembly. This design greatly simplifies the assembly and disassembly process. Operators can easily complete the assembly and disassembly of the fan blades by simply following the preset locking direction, saving time and effort. At the same time, by avoiding the impact on the motor shaft caused by direct plugging and unplugging, the possibility of motor damage is effectively reduced. Even in maintenance scenarios requiring frequent disassembly and assembly, this limiting and locking structure ensures that the connection remains stable and will not loosen or be damaged, thereby extending the overall service life of the fan. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the fan blade of this utility model;

[0028] Figure 4 This is a schematic diagram showing the connection between the limiting component and the rotating shaft of this utility model.

[0029] In the picture:

[0030] 100. Outer frame;

[0031] 200. Fan blade sleeve; 201. Blade; 202. Inner cylinder; 203. Spring;

[0032] 204. Fixing plate; 205. Tightening plate;

[0033] 206. Recessed hole; 207. Through hole;

[0034] 300. Rotating shaft; 301. Limiting block; 302. Actuating column. Detailed Implementation

[0035] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1 to 4 This utility model provides a technical solution: a server fan that is easy to maintain, the server fan includes an outer frame 100, fan blades, a drive component and a limiting component;

[0037] The fan blades are placed inside the outer frame 100;

[0038] The drive unit consists of a transmission part and a power part;

[0039] The power unit is installed on the rear surface of the outer frame 100, which is not shown in the figure, while the transmission unit is installed on the power unit and the rotation of the transmission unit is realized through the power unit.

[0040] The limiting component consists of a stopper and a limiting component;

[0041] The stop member is located at the bottom of the transmission unit and abuts against the bottom surface of the fan blade, while the limiting member is fixed at the top of the transmission unit and abuts against the top of the fan blade.

[0042] In this embodiment, preferably, the power unit includes a motor. The specific model needs to be changed according to the different heat dissipation requirements of the server, which will not be described in detail here. The transmission unit is a rotating shaft 300. The bottom end of the rotating shaft 300 is installed in the motor and forms the output end of the motor. The rotating shaft 300 passes through the outer frame 100 to the inside of the fan blade.

[0043] In this embodiment, preferably, the abutting component includes a spring 203, a fixing plate 204, and a clamping plate 205;

[0044] The fixing plate 204 is fixed at the bottom of the rotating shaft 300 and is placed between the fan blade and the outer frame 100.

[0045] The clamping piece 205 is positioned above the fixing piece 204, and the clamping piece 205 is movably sleeved on the rotating shaft 300 in the vertical direction;

[0046] Spring 203 is sleeved on the outside of rotating shaft 300, and both ends of spring 203 abut against fixed plate 204 and clamping plate 205 respectively.

[0047] In this embodiment, preferably, the fan blade includes a fan blade sleeve 200 and a blade 201;

[0048] The center of the fan blade sleeve shaft 200 and the center of the outer frame 100 are on the same vertical line, and an integral inner cylinder 202 is fixed inside the fan blade sleeve shaft 200. The inner cylinder 202 abuts against the clamping plate 205. During installation, the fan blade sleeve shaft 200 is placed into the outer frame 100, and then the inner cylinder 202 will squeeze the clamping plate 205. The clamping plate 205 descends by the compression spring 203 to meet the descent requirement of the fan blade sleeve shaft 200 during installation. At the same time, the spring 203 rebounds, so that the clamping plate 205 and the inner cylinder 202 are pressed together.

[0049] The blades 201 are fixed at equal angles on the outer surface of the fan blade sleeve shaft 200, and the blades 201 do not contact the inner wall of the outer frame 100. The motor drives the rotating shaft 300, which in turn drives the fan blade sleeve shaft 200. The fan blade sleeve shaft 200 drives the blades 201 to rotate and generate airflow, thereby cooling the server.

[0050] In this embodiment, preferably, the limiting member includes a limiting block 301 and a toggle post 302;

[0051] The limiting block 301 is fixed on the top surface of the rotating shaft 300, while the actuating column 302 is fixed at both ends of the top of the limiting block 301. During the subsequent disassembly and assembly, the limiting block 301 is rotated by rotating the actuating column 302, thereby separating and locking it from the fan blade.

[0052] In this embodiment, preferably, a recessed hole 206 is provided at the top of the fan blade sleeve shaft 200, and a through hole 207 is provided at the bottom end face of the recessed hole 206. The top end of the rotating shaft 300 passes through the through hole 207 into the interior of the recessed hole 206, and the limiting block 301 also passes through the through hole 207. When the limiting block 301 rotates, it is misaligned with the through hole 207 and abuts against the bottom end face of the interior of the recessed hole 206. When the inner cylinder 202 presses the clamping plate 205 to reduce the height of the entire fan blade, the limiting block 301 will pass through the through hole 207 and move onto the recessed hole 206. Then, the limiting block 301 and the rotating shaft 300 are rotated by the actuating column 302 to achieve the misalignment of the limiting block 301 and the through hole 207, and then the fan blade sleeve shaft 200 is released. The downward pressure, under the rebound of spring 203, lifts the entire fan blade through the clamping plate 205. At this time, the upper and lower positions of the fan blade sleeve shaft 200 are respectively limited and clamped by the clamping plate 205 and the limiting block 301, and then it can be rotated. It is worth noting that in order to prevent the limiting block 301 from rebounding back into the through hole 207 when the rotating shaft 300 rotates, the rebound force of spring 203 should be greater than the centrifugal force generated by the fan blade when it rotates. That is, when the fan blade rotates, the position between the fan blade sleeve shaft 200 and the limiting block 301 will not change. In the later disassembly and maintenance, it is only necessary to rotate the limiting block 301 into the through hole 207, and then, with the help of the rebound of spring 203, the entire fan blade can be ejected upward and separated.

[0053] In this embodiment, preferably, the outer frame 100 has holes around its perimeter, through which bolts pass.

[0054] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A server fan that is easy to maintain, characterized by: The server fan includes an outer frame (100), fan blades, a drive unit, and a limit assembly; The fan blades are placed inside the outer frame (100); The drive unit consists of a transmission part and a power part; The power unit is mounted on the rear surface of the outer frame (100), and the transmission unit is mounted on the power unit; The limiting component consists of a stopper and a limiting component; The stop member is located at the bottom of the transmission part and abuts against the bottom surface of the fan blade, while the limiting member is fixed at the top of the transmission part and abuts against the top of the fan blade.

2. The maintenance-friendly server fan of claim 1, wherein: The power unit includes a motor, and the transmission unit is a rotating shaft (300). The bottom end of the rotating shaft (300) is installed inside the motor and forms the output end of the motor. The rotating shaft (300) passes through the outer frame (100) to the inside of the fan blade.

3. The maintenance-friendly server fan of claim 2, wherein: The abutting component includes a spring (203), a fixing plate (204), and a clamping plate (205); The fixing piece (204) is fixed at the bottom of the rotating shaft (300) and is placed between the fan blade and the outer frame (100). The abutting piece (205) is located above the fixing piece (204), and the abutting piece (205) is movably sleeved on the rotating shaft (300) in the vertical direction; The spring (203) is sleeved on the outside of the rotating shaft (300), and the two ends of the spring (203) abut against the fixing piece (204) and the clamping piece (205) respectively.

4. The maintenance-friendly server fan of claim 3, wherein: The fan blades include a fan blade sleeve (200) and blades (201); The center of the fan blade sleeve shaft (200) and the center of the outer frame (100) are on the same vertical line, and an integral inner cylinder (202) is fixed inside the fan blade sleeve shaft (200), which abuts against the clamping piece (205); The blades (201) are fixed at equal angles on the outer surface of the fan blade sleeve shaft (200), and the blades (201) do not contact the inner wall of the outer frame (100).

5. A maintenance-friendly server fan according to claim 4, characterized in that: The limiting component includes a limiting block (301) and a toggle post (302); The limiting block (301) is fixed on the top surface of the rotating shaft (300), while the actuating column (302) is fixed at both ends of the top of the limiting block (301).

6. A maintenance-friendly server fan according to claim 5, characterized in that: The top of the fan blade sleeve shaft (200) is also provided with a recessed hole (206), and a through hole (207) is provided on the bottom end face of the recessed hole (206). The top end of the rotating shaft (300) passes through the through hole (207) to the inside of the recessed hole (206), and the limiting block (301) also passes through the through hole (207). When the limiting block (301) rotates, it is misaligned with the through hole (207) and abuts against the bottom end face of the inside of the recessed hole (206).

7. The maintenance-friendly server fan of claim 1, wherein: The outer frame (100) has holes around its perimeter, through which bolts pass.

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