LED car lamp cooling fan capable of achieving continuous lubrication

Abstract

The utility model relates to a continuously lubricated LED car lamp cooling fan, which comprises a hollow fixed frame and a wind wheel rotatably mounted in the fixed frame, a mounting plate is arranged at the bottom of the fixed frame, a fixed column is integrally formed on the mounting plate, a driving shaft is rotatably mounted in the fixed column through a bearing, and the wind wheel is fixedly connected with the driving shaft; lubricating oil is injected into the fixing columns. A bearing on the driving shaft is kept in contact with lubricating oil in the fixing column, and a sealing device for preventing the lubricating oil from overflowing is arranged on the fixing column. Due to the fact that the oil seal is injected into the fixing column and the sealing device is arranged on the fixing column, it is guaranteed that the bearing on the driving shaft makes contact with lubricating oil in the using state and the stopping state, the service life of the bearing is prolonged, and the service life of the cooling fan is further prolonged; the bearing is always in a lubricating state, so that the stability of the cooling fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of in-vehicle lamp heat dissipation devices, in particular to an LED headlamp heat dissipation fan with continuous lubrication. Background Technique

[0002] Existing heat dissipation fans are divided into two types: ball fans and hydraulic fans. Since the efficiency of ball fans is higher than that of hydraulic fans and the rotation is more stable, the application range is wider. When installing ball bearings in ball fans, lubricating oil is added to the balls in the ball bearings so that the ball bearings contain saturated lubricating oil in the initial state. However, during long-term application of the ball bearings, since the steel balls in the ball bearings and the inner and outer rings of the ball bearings are both made of metal. When the lubricating oil in the ball bearings gradually consumes, friction sounds will occur between the steel balls and the inner and outer rings, and at the same time, the friction loss between the steel balls and the inner and outer rings will be accelerated. As a result, the rotational stability of the heat dissipation fan decreases. Content of the Utility Model

[0003] The purpose of the utility model is to provide an LED headlamp heat dissipation fan with continuous lubrication to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an LED headlamp heat dissipation fan with continuous lubrication, including a hollow fixed frame and a wind wheel rotatably installed in the fixed frame. An installation plate is provided at the bottom of the fixed frame, and a fixed column is integrally formed on the installation plate. A driving shaft is rotatably installed in the fixed column through a bearing, and the wind wheel is fixedly connected to the driving shaft; lubricating oil is injected into the fixed column; so that the bearing on the driving shaft is in contact with the lubricating oil in the fixed column, and a sealing device for preventing the lubricating oil from overflowing is provided on the fixed column.

[0005] Compared with the prior art, since lubricating oil is injected into the fixed column and a sealing device is provided on the fixed column, it is ensured that the bearing on the driving shaft is in contact with the lubricating oil both in the use state and the stop state, thereby prolonging the service life of the bearing and further prolonging the service life of the heat dissipation fan; since the bearing is always in a lubricated state, the stability of the heat dissipation fan is improved.

[0006] As an improvement of the LED headlamp heat dissipation fan with continuous lubrication of the utility model, a central hole is provided on the fixed column, and the lubricating oil is located in the central hole, and the central hole is a blind hole or a through hole.

[0007] As an improvement of the LED headlamp heat dissipation fan with continuous lubrication of the utility model, a first bearing and a second bearing are arranged at intervals on the driving shaft, and both the first bearing and the second bearing are located in the central hole and are in contact with the lubricating oil.

[0008] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, clamping grooves are provided on both sides of the first bearing and the second bearing, and the clamping grooves are provided on the side wall of the central hole; a circlip is arranged in each clamping groove.

[0009] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, a mounting hole is coaxially arranged at the opening of the central hole, and the sealing device is fixedly installed in the mounting hole.

[0010] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, the sealing device includes a pressing plate fixedly installed in the mounting hole. A transition hole adapted to the drive shaft is provided at the center of the pressing plate. A micro sealing ring is arranged between the transition hole and the drive shaft, and a sealing gasket is arranged between the pressing plate and the bottom wall of the mounting hole.

[0011] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, the sealing device is an oil seal, and the oil seal is arranged in the mounting hole.

[0012] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, the axis of the mounting plate is coaxially arranged with the axis of the fixed frame; a plurality of connecting rods are used for fixedly connecting between the mounting plate and the fixed frame; the plurality of connecting rods are evenly distributed between the mounting plate and the fixed frame.

[0013] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, the wind wheel includes a circular connecting plate and a connecting ring integrally formed with the connecting plate. A plurality of fan blades are integrally formed on the outer surface of the wind wheel; a connecting column coaxially arranged with the connecting ring is provided at the center of the connecting plate, and the drive shaft is fixedly connected with the connecting column.

[0014] As an improvement to the continuously lubricated LED headlight cooling fan of the present utility model, a fixed chamber is arranged between the connecting ring and the connecting column; a permanent magnet ring is arranged in the fixed chamber; a stator winding is fixedly installed on the fixed column; the permanent magnet ring is sleeved on the stator winding; during use, the cooperation of the stator winding and the permanent magnet ring causes the wind wheel to rotate.

[0015] In addition to the technical problems solved by the present invention, the technical features constituting the technical solution, and the advantages brought by these technical features of the technical solution described above, other technical problems that the present utility model can solve, other technical features included in the technical solution, and the advantages brought by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded cross-sectional view of the present utility model.

[0017] Figure 2 is an enlarged view of part A in the first installation method of the present utility model.

[0018] Figure 3 It is an enlarged view of part A of the second installation method of the present utility model.

[0019] Explanation of the reference numerals in the attached drawings: 01. Fixed frame, 02. Mounting plate, 03. Connecting rod, 04. Fixed column, 05. Driving shaft, 06. Wind wheel, 07. Fan blade, 08. Central hole, 09. First bearing, 10. Second bearing, 11. Oil seal, 12. Mounting hole, 13. Pressure plate, 14. Transition hole, 15. Sealing gasket, 16. Connecting plate, 17. Connecting ring, 18. Connecting column. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] As Figures 1-3 shown, a continuously lubricated LED headlight cooling fan of the present utility model includes a hollow fixed frame 01, and the outer circumference of the fixed frame 01 is adapted to the installation position on the LED vehicle roof. A mounting plate 02 is provided at the bottom of the fixed frame 01, and the axis of the mounting plate 02 is coaxially arranged with the axis of the fixed frame 01. Multiple connecting rods 03 are used for fixedly connecting the mounting plate 02 and the fixed frame 01. The multiple connecting rods 03 are evenly distributed between the mounting plate 02 and the fixed frame 01. A card slot is provided on one of the connecting rods 03 for placing a wire for realizing the electrical connection of the cooling fan.

[0022] One end of the connecting rod 03 is integrally formed and fixedly connected to the fixed frame 01. The other end of the connecting rod 03 is integrally formed and fixedly connected to the mounting plate 02. A ventilation hole communicating with the installation chamber is provided between adjacent two connecting rods 03.

[0023] A fixed column 04 is integrally formed on the mounting plate 02, and a driving shaft 05 is rotatably installed in the fixed column 04. One end of the driving shaft 05 penetrates into the fixed column 04 and is rotatably connected to the fixed column 04, and the other end of the driving shaft 05 is located outside the fixed column 04 and fixedly installed with a wind wheel 06.

[0024] In order to keep the ball bearing lubricated all the time, a central hole 08 is provided on the fixed column 04. The central hole 08 is a blind hole. A first bearing 09 and a second bearing 10 are fixedly installed on the drive shaft 05 at intervals. Both the first bearing 09 and the second bearing 10 are fixedly installed in the central hole 08. It should be noted that the first bearing 09 and the second bearing 10 are two different types of miniature bearings with different outer diameters but the same inner diameter. An oil seal 11 is provided on the drive shaft 05. The oil seal 11 is fixedly installed at the opening of the central hole 08. During the assembly process, after the first bearing 09 and the second bearing 10 are fixedly installed on the drive shaft 05, the first bearing 09 and the second bearing 10 are fixed in the central hole 08 by means of riveting and pressing. Lubricating oil is filled into the central hole 08, and finally sealed by the oil seal 11. Prevent the lubricating oil in the central hole 08 from overflowing from the gap of the second bearing 10. Injecting lubricating oil into the central hole 08 keeps the first bearing 09 and the second bearing 10 lubricated all the time, thereby prolonging the service life of the first bearing 09 and the second bearing 10, and further prolonging the service life of the cooling fan. Since the first bearing 09 and the second bearing 10 are always in a lubricated state, the stability of the cooling fan is improved. At the same time, through the design of the oil seal 11, prevent the lubricating oil in the central hole 08 from overflowing from the central hole 08.

[0025] Clamping grooves are provided on both sides of the first bearing 09 and the second bearing 10. The clamping grooves are provided on the side wall of the central hole 08. A snap ring is provided in each clamping groove. The connection mode between the first bearing 09 and the second bearing 10 and the drive shaft 05 is also fixed by a snap ring. The first bearing 09 and the second bearing 10 are fixed by the snap rings provided on both sides of the first bearing 09 and the second bearing 10, so as to fix the drive shaft. An installation hole 12 is coaxially provided at the opening of the central hole 08. The oil seal 11 is fixedly installed in the installation hole 12.

[0026] Such as Figure 3As shown in the figure, the second method for sealing the lubricating oil in the central hole 08. A pressing plate 13 is fixedly installed in the installation hole 12 by means of fasteners or hot press welding. The pressing plate 13 is located in the installation hole 12. A transition hole 14 adapted to the drive shaft 05 is provided at the center of the pressing plate 13. A sealing groove is provided on the side wall of the transition hole 14. A micro-sealing ring adapted to the drive shaft 05 is provided in the sealing groove. A sealing gasket 15 is provided between the pressing plate 13 and the bottom surface of the installation hole 12. By the setting method of the sealing gasket 15, it is prevented that the lubricating oil enters the gap between the pressing plate 13 and the installation hole 12. At the same time, by the setting of the sealing ring, it is prevented that the lubricating oil overflows from the gap between the drive shaft 05 and the transition hole 14. Another advantage of sealing the lubricating oil by the second method is that when the lubricating oil component in the fixed column is reduced, the pressing plate can be removed and lubricating oil can be added into the fixed column again. Compared with the oil seal, because the oil seal is easily damaged after secondary disassembly. Therefore, the later maintenance cost is lower than that of the oil seal.

[0027] Therefore, the central hole 08 is set as a blind hole, and lubricating oil is injected into the central hole 08. The first bearing 09 and the second bearing 10 on the drive shaft 05 are both located in the central hole 08 and are in contact with the lubricating oil and in a lubricated state, so as to extend the service life of the first bearing 09 and the second bearing 10 and thus extend the service life of the cooling fan. Since the first bearing 09 and the second bearing 10 are always in a lubricated state, the stability of the cooling fan is improved. And a sealing device is provided at the opening of the central hole 08 to prevent the lubricating oil in the central hole 08 from overflowing from the opening of the central hole 08.

[0028] At the same time, the central hole 08 can also be set as a through hole penetrating the fixed column 04 and the mounting plate 02. When the central hole 08 is a through hole, the first bearing 09 and the second bearing 10 are micro-bearings with the same outer diameter and inner diameter. The above-mentioned sealing devices are provided at the openings at both ends of the central hole 08. Similarly, the lubricating oil in the fixed column 04 can be sealed.

[0029] The wind wheel 06 includes a circular connecting plate 16 and a connecting ring 17 integrally formed with the connecting plate 16. A plurality of fan blades 07 are integrally formed on the outer surface of the wind wheel 06. The fan blades 07 are located between the connecting ring 17 and the fixed frame 01. A connecting column 18 coaxially arranged with the connecting ring 17 is provided at the center of the connecting plate 16. The drive shaft 05 is fixedly connected to the connecting column 18. A fixed chamber is provided between the connecting ring 17 and the connecting column 18. A permanent magnet ring is provided in the fixed chamber. The permanent magnet ring is fixedly connected to the fixed chamber by an interference fit method. A stator winding is fixedly installed on the fixed column 04. The permanent magnet ring is sleeved on the stator winding. Through the cooperation of the stator winding and the permanent magnet ring, the wind wheel 06 rotates.

[0030] It should be noted that for the sake of clear description, the fastener described in this application is any one of screws, bolts, and screws.

[0031] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] The above embodiments are only descriptions of the preferred embodiments of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A continuously lubricated LED car light cooling fan, comprising a hollow fixed frame and a wind wheel rotatably mounted in the fixed frame, characterized in that: A mounting plate is provided at the bottom of the fixed frame, and a fixing column is integrally formed on the mounting plate. A driving shaft is rotatably mounted in the fixing column through a bearing, and the wind wheel is fixedly connected to the driving shaft. Lubricating oil is injected into the fixing column to keep the bearing on the driving shaft in contact with the lubricating oil in the fixing column. A sealing device is provided on the fixing column to prevent the lubricating oil from overflowing.

2. The continuously lubricated LED car light cooling fan according to claim 1, characterized in that: A central hole is arranged on the fixing column, and the lubricating oil is located in the central hole, and the central hole is a blind hole or a through hole.

3. The continuously lubricated LED car light cooling fan according to claim 2, characterized in that: A first bearing and a second bearing are arranged at intervals on the driving shaft. Both the first bearing and the second bearing are located in the central hole and are in contact with the lubricating oil.

4. The continuously lubricated LED car light cooling fan according to claim 3, characterized in that: Both sides of the first bearing and the second bearing are provided with clamping grooves, which are arranged on the side walls of the central hole; and each clamping groove is provided with a clamping spring.

5. The continuously lubricated LED car light cooling fan according to claim 2, characterized in that: A mounting hole is coaxially arranged at the opening of the central hole, and the sealing device is fixedly installed in the mounting hole.

6. The continuously lubricated LED car light cooling fan according to claim 5, characterized in that: The sealing device includes a pressure plate fixedly installed in the mounting hole, a transition hole adapted to the drive shaft is arranged at the center of the pressure plate, a micro sealing ring is arranged between the transition hole and the drive shaft, and a sealing gasket is arranged between the pressure plate and the bottom wall of the mounting hole.

7. The continuously lubricated LED car light cooling fan according to claim 5, characterized in that: The sealing device is an oil seal, and the oil seal is arranged in the mounting hole.

8. The continuously lubricated LED car light cooling fan according to claim 1, characterized in that: The mounting plate and the fixing frame are fixedly connected by a plurality of connecting rods; the plurality of connecting rods are evenly distributed between the mounting plate and the fixing frame.

9. The continuously lubricated LED car light cooling fan according to claim 8, characterized in that: The wind wheel includes a circular connecting plate and a connecting ring integrally formed with the connecting plate, and a plurality of blades are integrally formed on the outer surface of the wind wheel; a connecting column coaxially arranged with the connecting ring is arranged at the center of the connecting plate, and the driving shaft is fixedly connected to the connecting column.

10. The continuously lubricated LED car light cooling fan according to claim 9, characterized in that: A fixed chamber is arranged between the connecting ring and the connecting column; a permanent magnet ring is arranged in the fixed chamber; a stator winding is fixedly mounted on the fixing column; the permanent magnet ring is sleeved on the stator winding; when in use, the cooperation between the stator winding and the permanent magnet ring causes the wind wheel to rotate.

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