A heat dissipation fan convenient for lubrication

Abstract

The utility model relates to the technical field of radiating fan, disclose a kind of lubrication convenient radiating fan, including protective shell, protective shell side sets up oil top cover, the rotating joint of radiating fan blade is arranged in protective shell, the oil injection assembly is arranged in protective shell, the dismounting assembly is arranged in protective shell, the oil injection assembly includes oil pipe, the oil pipe outer wall fixedly connected in the inside of protective shell, the oil pipe inside is opened and has the filling port, the fixed post is fixedly connected in the oil pipe inside, the fixed post other side is fixedly connected with the connecting shell. In the utility model, through the drive of lubricating oil to sealing plug and connecting column and cooperate with tension spring, realize the sliding of sealing plug in filling port inside, without disassembling fan, it can be convenient to supplement oil, also can keep oil stability, solve the problem that traditional fan oil injection is easy to leak, need to disassemble, improve lubrication operation convenience and oil retention stability.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, and in particular to a cooling fan that is easy to lubricate. Background Technology

[0002] During the operation of electronic devices, core components such as CPUs and graphics cards continuously generate heat. If this heat cannot be dissipated in time, it will lead to decreased device performance, shortened lifespan, and even malfunctions. Cooling fans, as the mainstream active cooling device, achieve heat exchange by driving airflow and are widely used in various electronic devices such as computers, servers, and industrial control cabinets. To ensure the long-term stable operation of cooling fans, their internal bearings and other moving parts need to be lubricated regularly to reduce friction loss, lower operating noise, and extend service life. Therefore, a cooling fan that is easy to lubricate has become a key component for improving the reliability and maintenance convenience of electronic device cooling systems. The rationality of its lubrication structure directly affects the fan's performance and maintenance efficiency, and it has significant application value and market demand in the field of electronic device cooling.

[0003] In existing technologies, common mechanical structures for lubricating cooling fans mainly involve setting a fixed oil filling hole on the fan housing, sealed with a common rubber plug. Some technologies also include a simple oil reservoir on the outside of the bearing. The technical principle is to periodically open the rubber plug and inject lubricating oil into the reservoir through the oil filling hole using a dropper or syringe. The lubricating oil slowly permeates to the bearing surface under gravity, achieving bearing lubrication. Simultaneously, the elastic deformation of the rubber plug and its contact with the inner wall of the oil filling hole ensure a seal, preventing dust ingress and initial oil leakage. Furthermore, some fans employ an integrated housing design, pre-filling the casing with lubricating oil during the manufacturing stage to attempt long-term lubrication, relying on the viscosity of the lubricating oil to adhere to the bearing components and maintain lubrication.

[0004] Existing technologies have significant drawbacks in practical applications, namely, the tendency for oil leakage during the lubrication of traditional cooling fans. Because the ordinary rubber plugs used to seal the lubrication holes rely solely on their own elasticity, their sealing performance is poor. During lubrication, lubricating oil easily seeps out from the gap between the rubber plug and the lubrication hole, wasting lubricating oil and contaminating surrounding electronic components, affecting the normal operation of electronic devices. Furthermore, some fans use interference-fit rubber plugs to ensure a good seal, requiring tools for disassembly and easily damaging the plug, leading to frequent replacement of seals for subsequent lubrication. In some cases, integrated fans cannot be easily opened for lubrication, requiring complete fan disassembly, significantly increasing maintenance difficulty and time costs. Therefore, this paper proposes a lubrication-friendly cooling fan to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cooling fan that is easy to lubricate, aiming to improve the problems of easy oil leakage and the need for disassembly in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A cooling fan that is easy to lubricate includes a protective housing, an oil cap on one side of the protective housing, a cooling fan blade rotatably connected inside the protective housing, an oil injection assembly inside the protective housing, and a disassembly assembly inside the protective housing.

[0008] The oil injection assembly includes an oil inlet pipe, the outer wall of which is fixedly connected to the inside of the protective housing. An injection port is provided inside the oil inlet pipe. A fixing post is fixedly connected inside the oil inlet pipe. A connecting housing is fixedly connected to the other side of the fixing post. A connecting post is slidably connected inside the connecting housing. A sealing plug is fixedly connected to the top of the connecting post. The outer wall of the sealing plug is slidably connected to the inside of the injection port. A limiting post is fixedly connected to the bottom of the connecting post. The outer wall of the limiting post is slidably connected to the inside of the connecting housing. A reset assembly is provided on the outer wall of the connecting post.

[0009] As a further description of the above technical solution:

[0010] The reset assembly includes a tension spring, which is sleeved inside the outer wall of the connecting post. The top end of the tension spring is fixedly connected to the inner wall of the connecting housing, and the bottom end of the tension spring is fixedly connected to the top of the limiting post.

[0011] As a further description of the above technical solution:

[0012] The disassembly and assembly assembly includes a locking post and a locking slot formed inside the protective housing, with the outer wall of the locking post slidably connected to the inside of the locking slot.

[0013] As a further description of the above technical solution:

[0014] A fixed outer shell is fixedly connected to the outer wall of the top cover, and a transmission column is slidably connected inside the fixed outer shell.

[0015] As a further description of the above technical solution:

[0016] One end of the transmission column is fixedly connected to the outer wall of the card column, and the other end of the transmission column is fixedly connected to a knob.

[0017] As a further description of the above technical solution:

[0018] The protective shell has a rotating groove inside and a sliding groove inside.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the transmission column is rotatably connected to a limiting ring, and the outer wall of the limiting ring is slidably connected inside the fixed housing.

[0021] As a further description of the above technical solution:

[0022] A compression spring is fitted on the outer wall of the transmission column. One end of the compression spring is fixedly connected to the outer wall of the limiting ring, and the other end of the compression spring is fixedly connected to the inner wall of the fixed housing.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the sealing plug achieves its movement function by injecting lubricating oil. When lubricating oil is injected, the sealing plug and connecting column are driven by the lubricating oil and cooperate with the tension spring to achieve the sliding of the sealing plug inside the filling port. Oil can be conveniently replenished without disassembling the fan, and the oil can be kept stable. This solves the problems of easy leakage and disassembly required for traditional fan oil filling, and improves the convenience of lubrication operation and the stability of oil retention.

[0025] 2. In this utility model, the locking pin moves by moving a knob. When the knob is moved, the driving of the transmission pin and the limiting ring, along with the compression spring, causes the locking pin to slide in the slot, thus facilitating the disassembly and assembly of the top cover. This makes it convenient for internal maintenance, replacement, and movement, solving the problem that existing disassembly and assembly methods require multiple tools and are not easy to disassemble, and improving the convenience of disassembly and assembly of the top cover. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a cooling fan that is easy to lubricate, as proposed in this utility model.

[0027] Figure 2 A schematic diagram of the structure of a cooling fan blade that is easy to lubricate, as proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the oil inlet pipe of a cooling fan that is easy to lubricate, as proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the internal structure of the housing of a cooling fan that is easy to lubricate, as proposed in this utility model.

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. Protective outer casing; 2. Top cover; 3. Cooling fan blades; 4. Oil inlet pipe; 5. Sealing plug; 6. Filling port; 7. Connecting post; 8. Tension spring; 9. Limiting post; 10. Connecting outer casing; 11. Fixing post; 12. Rotating groove; 13. Locking post; 14. Locking groove; 15. Fixing outer casing; 16. Knob; 17. Transmission post; 18. Limiting ring; 19. Compression spring; 20. Sliding groove. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3 This utility model provides an embodiment of a cooling fan that is easy to lubricate, including a protective shell 1. The protective shell 1 is a hollow cylindrical structure, and its inner wall is made of galvanized steel plate. This material has good rust resistance and structural strength, and can effectively protect the internal components of the fan from external impact and dust corrosion. This is common knowledge and will not be described in detail here. An oil cap 2 is provided on one side of the protective shell 1. The cap 2 is a circular flat plate structure, and its edge is adapted to the inner wall of the protective shell 1 to seal the opening of the protective shell 1, preventing foreign objects from entering the interior and affecting the operation of the components. The protective housing 1 is rotatably connected to a heat dissipation fan 3, which is composed of arc-shaped blades made of ABS engineering plastic. This material is lightweight, high-strength, and impact-resistant, and can maintain structural stability during high-speed rotation, reduce wind resistance, and improve heat dissipation efficiency. The heat dissipation fan 3 is connected to the motor output shaft inside the protective housing 1 through a bearing. The motor drives the heat dissipation fan 3 to rotate at high speed, thereby driving airflow to achieve heat dissipation. This is existing technology and will not be described in detail here. The protective housing 1 is equipped with an oil injection component and a disassembly component.

[0035] The oil filling assembly includes an oil inlet pipe 4, which is a hollow tubular structure with a polished inner wall to reduce resistance to lubricant flow and prevent oil residue. It is fixedly connected to the inside of the protective housing 1 by welding, providing a strong and airtight connection to prevent loosening or oil leakage during fan operation. The outer wall of the oil inlet pipe 4 is fixedly connected to the inside of the protective housing 1. An oil filling port 6 is provided inside the oil inlet pipe 4. The filling port 6 has a tapered structure that is wider at the top and narrower at the bottom, facilitating the insertion and alignment of the oil filling pipe and reducing the risk of oil leakage during the filling process. Oil overflows. A fixed post 11 is fixedly connected inside the oil inlet pipe 4. A connecting shell 10 is fixedly connected to the other side of the fixed post 11. A connecting post 7 is slidably connected inside the connecting shell 10. A sealing plug 5 is fixedly connected to the top of the connecting post 7. The sealing plug 5 is made of nitrile rubber. Nitrile rubber has good elasticity and oil resistance and can tightly fit the inner wall of the filling port 6 to achieve a seal. The outer wall of the sealing plug 5 is slidably connected to the inside of the filling port 6. A limit post 9 is fixedly connected to the bottom of the connecting post 7. The outer wall of the limit post 9 is slidably connected to the inside of the connecting shell 10. A reset component is provided on the outer wall of the connecting post 7.

[0036] The reset assembly includes a tension spring 8, which is made of high carbon steel. High carbon steel has good elasticity and fatigue strength, and can quickly return to its original shape after multiple stretching deformations, ensuring the stability of the reset function. The tension spring 8 is internally sleeved on the outer wall of the connecting column 7. The top end of the tension spring 8 is fixedly connected to the inner wall of the connecting housing 10, and the bottom end of the tension spring 8 is fixedly connected to the top of the limiting column 9.

[0037] Reference Figure 1 , Figure 4 and Figure 5The assembly and disassembly components include a locking post 13 and a locking groove 14 inside the protective housing 1. The locking post 13 is a cylindrical structure made of 45# steel. 45# steel has high strength and wear resistance, and can maintain structural stability and is not easily deformed during repeated insertion and removal. This is common knowledge and will not be elaborated further here. The outer wall of the locking post 13 is slidably connected to the inside of the locking groove 14. The outer wall of the top cover 2 is fixedly connected to the fixed housing 15 by welding. The welding connection has the characteristics of strong connection and good sealing, which can ensure that the fixed housing 15 and the top cover 2 move synchronously and avoid relative displacement during disassembly and assembly. A transmission post 17 is slidably connected inside the fixed housing 15. One end of the transmission post 17 is fixedly connected to... A knob 16 is fixedly connected to the other end of the transmission column 17, which is attached to the outer wall of the locking column 13. The knob 16 is a circular protrusion structure with anti-slip texture on its outer wall. The anti-slip texture is used to increase the friction between the hand and the knob 16, so that the operator can turn or press the knob 16 and avoid slipping. A rotation groove 12 and a sliding groove 20 are opened inside the protective shell 1. A limit ring 18 is rotatably connected to the outer wall of the transmission column 17. The outer wall of the limit ring 18 is slidably connected to the inside of the fixed shell 15. A compression spring 19 is sleeved on the outer wall of the transmission column 17. One end of the compression spring 19 is fixedly connected to the outer wall of the limit ring 18, and the other end of the compression spring 19 is fixedly connected to the inner wall of the fixed shell 15.

[0038] Working principle: When lubricating and maintaining this easily lubricated cooling fan, for the lubrication oil addition operation at the connection of the cooling fan blade 3, firstly, the oil injection pipe needs to be accurately aligned and slid into the filling port 6, and then lubricating oil is injected into the oil injection pipe. During the injection process, the pressure generated by the lubricating oil will directly act on the sealing plug 5 in the filling port 6, pushing the sealing plug 5 to slide smoothly along the inner wall of the filling port 6; since the sealing plug 5 is fixedly connected to the connecting post 7, when the sealing plug 5 slides, it will simultaneously drive the connecting post 7 to slide axially inside the connecting housing 10, and the limiting post 9 connected to the other end of the connecting post 7 will also slide in the same direction inside the connecting housing 10. During this process, the limiting post 9 will generate tension on the tension spring 8 sleeved on its outer side, causing the tension spring 8 to be gradually stretched and deformed;

[0039] As the sealing plug 5 slides, the channel between the filling port 6 and the oil inlet pipe 4 is opened, and the injected lubricating oil flows smoothly along the internal channel of the oil inlet pipe 4, and is finally precisely guided to the connection of the cooling fan blade 3 to achieve lubrication of the key moving parts. When the oil filling operation is completed, the oil filling is stopped, and the tension spring 8 will rebound under its own elastic restoring force, pulling the limit post 9 and the connecting post 7 to slide in the opposite direction, thereby driving the sealing plug 5 back to the initial position of the filling port 6, tightly fitting the inner wall of the filling port 6, achieving a seal on the filling port 6, and effectively preventing external dust from entering the fan and contaminating the components.

[0040] In addition, the operation process is equally convenient when the fan device needs to be disassembled and maintained. First, press the knob 16 on the top cover 2. After the knob 16 is subjected to force, it will drive the transmission column 17 fixedly connected to it to slide along the axial direction inside the fixed housing 15. The end of the transmission column 17 away from the knob 16 is connected to the locking column 13, so it will push the locking column 13 to slide out from the locking groove 14 inside the inner wall of the protective housing 1 and finally enter the rotating groove 12. At the same time, the limiting ring 18 sleeved on the outside of the transmission column 17 will move with the transmission column 17, and squeeze the compression spring 19 between the limiting ring 18 and the inner wall of the fixed housing 15, causing the compression spring 19 to be compressed and deformed. Next, while keeping the knob 16 pressed, rotate the knob 16. The knob 16 drives the locking pin 13 to rotate inside the rotating groove 12 through the transmission column 17 until the position of the locking pin 13 is completely aligned with the sliding groove 20 on the protective shell 1. At this time, release the knob 16, and the top cover 2 can be smoothly slid out from inside the protective shell 1 along the sliding groove 20 to remove the top cover 2, which is convenient for the staff to maintain or replace the internal components of the fan. After maintenance, align the top cover 2 back with the sliding groove 20 and push it into the protective shell 1. The compression spring 19 will push the limit ring 18 and the transmission column 17 to move in the opposite direction under the action of elastic restoring force, thereby driving the locking pin 13 to re-lock into the groove 14, so as to achieve stable fixation of the top cover 2.

Claims

1. A cooling fan that is easy to lubricate, comprising a protective housing (1), characterized in that: An oil cap (2) is provided on one side of the protective shell (1), a heat dissipation fan (3) is rotatably connected inside the protective shell (1), an oil injection assembly is provided inside the protective shell (1), and a disassembly assembly is provided inside the protective shell (1). The oil injection assembly includes an oil inlet pipe (4), the outer wall of which is fixedly connected to the inside of the protective shell (1). An injection port (6) is provided inside the oil inlet pipe (4). A fixing column (11) is fixedly connected inside the oil inlet pipe (4). A connecting shell (10) is fixedly connected to the other side of the fixing column (11). A connecting column (7) is slidably connected inside the connecting shell (10). A sealing plug (5) is fixedly connected to the top of the connecting column (7). The outer wall of the sealing plug (5) is slidably connected inside the injection port (6). A limiting column (9) is fixedly connected to the bottom of the connecting column (7). The outer wall of the limiting column (9) is slidably connected inside the connecting shell (10). A reset assembly is provided on the outer wall of the connecting column (7).

2. The cooling fan for easy lubrication according to claim 1, characterized in that: The reset assembly includes a tension spring (8), which is sleeved inside the outer wall of the connecting post (7). The top end of the tension spring (8) is fixedly connected to the inner wall of the connecting housing (10), and the bottom end of the tension spring (8) is fixedly connected to the top of the limiting post (9).

3. A cooling fan that is easy to lubricate according to claim 2, characterized in that: The assembly includes a locking post (13) and a slot (14) formed inside the protective housing (1), with the outer wall of the locking post (13) slidably connected inside the slot (14).

4. A cooling fan that is easy to lubricate according to claim 3, characterized in that: The top cover (2) is fixedly connected to a fixed outer shell (15), and a transmission column (17) is slidably connected inside the fixed outer shell (15).

5. A cooling fan that is easy to lubricate according to claim 4, characterized in that: One end of the transmission column (17) is fixedly connected to the outer wall of the card column (13), and the other end of the transmission column (17) is fixedly connected to a knob (16).

6. A cooling fan that is easy to lubricate according to claim 5, characterized in that: The protective shell (1) has a rotating groove (12) inside and a sliding groove (20) inside.

7. A cooling fan for easy lubrication according to claim 6, characterized in that: The outer wall of the transmission column (17) is rotatably connected to a limiting ring (18), and the outer wall of the limiting ring (18) is slidably connected inside the fixed outer shell (15).

8. A cooling fan that is easy to lubricate according to claim 7, characterized in that: A compression spring (19) is fitted on the outer wall of the transmission column (17). One end of the compression spring (19) is fixedly connected to the outer wall of the limiting ring (18), and the other end of the compression spring (19) is fixedly connected to the inner wall of the fixed outer shell (15).

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