Stable car lamp cooling fan

Abstract

The utility model relates to a stable car lamp cooling fan which comprises a mounting plate and a connecting frame rotationally mounted on the mounting plate, a plurality of fan blades are evenly distributed on the outer surface of the connecting frame, a permanent magnet ring is arranged in the connecting frame, and a stator winding matched with the permanent magnet ring is arranged on the mounting plate. A limiting component is arranged in the connecting frame, and an attaching component matched with the limiting component is arranged on the permanent magnet ring. The limiting part is arranged in the connecting frame, meanwhile, the attaching part matched with the limiting part is arranged on the permanent magnet ring, and the limiting part and the attaching part are matched, so that the phenomenon of idling between the permanent magnet ring and the connecting frame in the long-time application process is prevented; the stability and stability of the cooling fan are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp heat dissipation equipment, in particular to a stable vehicle lamp heat dissipation fan. Background Art

[0002] Existing cooling fans rotate differently from traditional fans. Transmission fans rotate by fixing a permanent magnet ring, securing the stator winding to a drive shaft, and securing the impeller to the drive shaft. The stator winding and the permanent magnet ring work together to rotate the drive shaft, which in turn drives the impeller, and thus the blades on the impeller. Two miniature bearings are mounted on the drive shaft, securing the drive shaft with these two bearings. This prevents the stator winding from moving along the drive shaft's axis during rotation.

[0003] The cooling fan fixes the stator winding and the permanent magnet ring in the wind wheel so that the permanent magnet ring and the wind wheel rotate synchronously. The existing method of fixing the permanent magnet ring is to fix the permanent magnet ring by using an interference fit method or a glue bonding method.

[0004] Because the cooling fan of the present invention is installed in a car headlight, the temperature of the headlight can reach over 40°C after 20 minutes of operation, and over 70°C after prolonged operation. Therefore, prolonged operation of the cooling fan in a high-temperature environment can reduce the stability between the permanent magnet ring and the connecting ring, causing them to loosen. When the permanent magnet ring and the connecting ring become loose, they intermittently idle, thereby reducing the cooling efficiency of the cooling fan. Utility Model Content

[0005] The purpose of the present invention is to provide a stable cooling fan for vehicle lights, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a stable car light cooling fan, including a mounting plate and a connecting frame rotatably mounted on the mounting plate, the outer surface of the connecting frame is evenly distributed with a number of fan blades, a permanent magnet ring is arranged in the connecting frame, and a stator winding adapted to the permanent magnet ring is arranged on the mounting plate; a limiting component is arranged in the connecting frame, and a fitting component adapted to the limiting component is arranged on the permanent magnet ring.

[0007] Compared with the existing technology, a limiting component is set in the connecting frame, and a fitting component adapted to the limiting component is set on the permanent magnetic ring. Through the cooperation of the limiting component and the fitting component, the idling phenomenon between the permanent magnetic ring and the connecting frame during long-term use is prevented; and the firmness and stability of the cooling fan are improved.

[0008] As an improvement to the stability of the vehicle lamp cooling fan of the present invention, a fixing column is integrally formed on the mounting plate, the stator winding is fixedly mounted on the fixing column, a drive shaft is rotatably mounted in the fixing column, and the end of the drive shaft is fixedly connected to the connecting frame.

[0009] As an improvement to the stability of the car light cooling fan of the present invention, the connecting frame includes a connecting plate and a connecting ring integrally formed with the connecting plate. A connecting column coaxially arranged with the connecting ring is provided at the center of the connecting plate. A fixed chamber is provided between the connecting ring and the connecting column. The permanent magnet ring is provided in the fixed chamber and abuts against the side wall of the fixed chamber.

[0010] As an improvement to the stable cooling fan for vehicle lights of the present invention, the limiting component is a limiting strip arranged on the side wall of the fixed chamber.

[0011] As an improvement to the stable cooling fan for vehicle lights of the present invention, the limiting component is a clamping rod arranged on the top of the fixed chamber.

[0012] As an improvement of the stable vehicle lamp cooling fan of the present invention, the fitting component is provided on the outer surface of the permanent magnet ring and is provided with a limiting groove adapted to the limiting strip.

[0013] As an improvement of the stable vehicle lamp cooling fan of the present invention, the fitting component is provided on the top of the permanent magnet ring and is provided with a clamping groove adapted to the clamping rod.

[0014] As an improvement to the stable cooling fan for vehicle lights of the present invention, a retaining ring is provided on the bottom surface of the connecting ring and abuts against the end surface of the permanent magnet ring.

[0015] As an improvement to the stable cooling fan for vehicle lights of the present invention, the width of the retaining ring is smaller than the thickness of the permanent magnet ring.

[0016] Compared with the existing technology, the design of the retaining ring avoids the risk of the permanent magnet ring falling off the connecting ring; at the same time, the width of the retaining ring is smaller than the thickness of the permanent magnet ring, thereby avoiding interference between the retaining ring and the stator winding during assembly and operation.

[0017] As an improvement to the stable headlight cooling fan of the present invention, a PCB board is further provided on the mounting plate. The PCB board is located between the stator winding and the mounting plate and is sleeved on the fixing column. The PCB board is electrically connected to the stator winding.

[0018] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solutions, and the advantages brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the present invention, other technical features included in the technical solutions, and the advantages brought about by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model.

[0020] Figure 2 It is a cross-sectional view of the first installation method of the utility model.

[0021] Figure 3 It is a cross-sectional view of the second installation method of the utility model.

[0022] Explanation of the accompanying figures: 01. Mounting plate, 02. Fixed column, 03. Drive shaft, 04. Connecting frame, 05. Fan blade, 06. Permanent magnet ring, 07. Connecting plate, 08. Connecting ring, 09. Connecting column, 10. Fixed chamber, 11. Limiting strip, 12. Limiting groove, 13. Retaining ring, 14. Snap-in rod, 15. Snap-in groove, 16. PCB board. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] like Figure 1-2 As shown, the cooling fan of the present invention includes a mounting plate 01, which is fixedly connected to the LED headlight. Mounting plate 01 is integrally formed with a fixing post 02, within which a drive shaft 03 is rotatably mounted. The end of drive shaft 03 is located outside of fixing post 02 and fixedly mounted with a connecting frame 04. Connecting frame 04 has a plurality of blades 05 integrally formed on its outer surface. A permanent magnet ring 06 is fixedly mounted within connecting frame 04. A stator winding is sleeved onto fixing post 02, and permanent magnet ring 06 is sleeved onto the stator winding. The cooperation between permanent magnet ring 06 and the stator winding causes connecting frame 04 to rotate about drive shaft 03.

[0025] Connecting frame 04 includes a circular connecting plate 07 and a connecting ring 08 integrally formed with the connecting plate 07. Blades 05 are integrally formed with the outer surface of connecting ring 08. A connecting post 09, coaxially arranged with connecting ring 08, is integrally formed in the center of connecting plate 07. Drive shaft 03 is fixedly connected to connecting post 09. A fixed chamber 10 is provided between connecting ring 08 and connecting post 09. Permanent magnet ring 06 is disposed within fixed chamber 10 and abuts against its sidewalls. Permanent magnet ring 06 is fixedly connected to fixed chamber 10 using an interference fit and adhesive bonding. The coordination between the stator winding and permanent magnet ring 06 enables the connecting frame 04 to rotate.

[0026] To prevent loosening between the permanent magnet ring 06 and the connecting frame 04 during long-term use, a limit bar 11 is installed on the side wall of the fixed chamber 10. The limit bar 11 and the connecting frame 04 are integrally molded by injection molding. A limit groove 12 is provided on the outer surface of the permanent magnet ring 06, which is compatible with the limit bar 11. The cooperation between the limit bar 11 and the limit groove 12 prevents idling between the permanent magnet ring 06 and the connecting ring 08.

[0027] A retaining ring 13 is provided on the bottom surface of the connecting ring 08, which abuts against the end face of the permanent magnet ring 06. The retaining ring 13 is formed by hot-pressed riveting. If the connecting ring 08 is made of aluminum alloy, it is formed by rotary riveting. The width (D) of the retaining ring 13 is smaller than the thickness (T) of the permanent magnet ring 06. The design of the retaining ring 13 avoids the risk of the permanent magnet ring 06 falling off the connecting ring 08. At the same time, the width (D) of the retaining ring 13 is smaller than the thickness (T) of the permanent magnet ring 06, thereby avoiding interference between the retaining ring 13 and the stator winding during assembly and operation.

[0028] like Figure 3 As shown, in order to prevent the permanent magnet ring 06 and the connecting frame 04 from loosening, another installation method is used. Unlike the above installation method, a clamping rod 14 integrally formed with the connecting plate is provided on the top of the fixed chamber 10, and the clamping rod 14 extends toward the end of the connecting ring 08. A clamping groove 15 adapted to the clamping rod 14 is provided on the top of the permanent magnet ring 06. During the assembly process, the permanent magnet ring 06 is installed in the fixed chamber 10. The cooperation between the clamping rod 14 and the clamping groove 15 avoids the phenomenon of idling between the permanent magnet ring 06 and the connecting ring 08. At the same time, the cooperation with the retaining ring 13 prevents the risk of the permanent magnet ring 06 falling off the connecting ring 08. In actual application, you can choose one of the above two installation methods to fix the permanent magnet ring 06, or you can use both methods to fix the permanent magnet ring 06.

[0029] Therefore, a limiting component is provided in the fixed chamber 10, and a fitting component is provided on the permanent magnet ring 06. The cooperation between the limiting component and the fitting component prevents idling between the permanent magnet ring 06 and the connecting frame 04 during long-term use, thereby improving the stability and firmness of the cooling fan.

[0030] like Figure 1 As shown, a PCB board 16 is also provided on the mounting plate 01. The PCB board 16 is located on the stator winding and the mounting plate 01 and is sleeved on the fixing column. The PCB board 16 is electrically connected to the stator winding.

[0031] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A stable car lamp cooling fan, comprising a mounting plate and a connecting frame rotatably mounted on the mounting plate, characterized in that: The outer surface of the connecting frame is evenly distributed with several fan blades, a permanent magnet ring is arranged inside the connecting frame, and a stator winding adapted to the permanent magnet ring is arranged on the mounting plate; a limiting component is arranged inside the connecting frame, and a fitting component adapted to the limiting component is arranged on the permanent magnet ring.

2. The stable cooling fan for vehicle lights according to claim 1, characterized in that: A fixing column is integrally formed on the mounting plate, the stator winding is fixedly mounted on the fixing column, a driving shaft is rotatably mounted in the fixing column, and an end portion of the driving shaft is fixedly connected to the connecting frame.

3. The stable cooling fan for vehicle lights according to claim 2, characterized in that: The connecting frame includes a connecting plate and a connecting ring integrally formed with the connecting plate. A connecting column coaxially arranged with the connecting ring is provided at the center of the connecting plate. A fixed chamber is provided between the connecting ring and the connecting column. The permanent magnet ring is provided in the fixed chamber and abuts against the side wall of the fixed chamber.

4. The stable cooling fan for vehicle lights according to claim 3, characterized in that: The limiting component is a limiting strip arranged on the side wall of the fixed chamber.

5. The stable cooling fan for vehicle lights according to claim 3, characterized in that: The limiting component is a clamping rod arranged on the top of the fixed chamber.

6. The stable cooling fan for vehicle lights according to claim 4, characterized in that: The fitting component is provided on the outer surface of the permanent magnet ring and is provided with a limiting groove adapted to the limiting strip.

7. The stable cooling fan for vehicle lights according to claim 5, characterized in that: The fitting component is arranged on the top of the permanent magnet ring and is provided with a clamping groove adapted to the clamping rod.

8. The stable cooling fan for vehicle lights according to any one of claims 1 to 7, characterized in that: A retaining ring is provided on the bottom surface of the connecting frame and abuts against the end surface of the permanent magnet ring.

9. The stable cooling fan for vehicle lights according to claim 8, characterized in that: The width of the retaining ring is smaller than the thickness of the permanent magnet ring.

10. The stable cooling fan for vehicle lights according to claim 2, characterized in that: A PCB board is also provided on the mounting plate. The PCB board is located between the stator winding and the mounting plate and is sleeved on the fixing column. The PCB board is electrically connected to the stator winding.

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