Axial flow fan with wire limiting structure
By setting a wire limit structure on the housing of the cooling fan, the problem of interference between the wire entering the airflow channel and the rotor assembly is solved, and the normal operation of the fan and the flatness of the housing surface are achieved.
Patent Information
- Application Number
- CN202421553138.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-07-03
AI Technical Summary
In the cooling fan, the wire between the stator assembly and the rotor assembly is prone to enter the airflow channel, resulting in interference with the rotor assembly and affecting the normal operation of the fan.
The wire limit structure is designed, and by providing a wire hole, a first limit slot, a second limit slot and a limit hook on the housing, ensuring that the wire is drawn out from the stator assembly to the fan periphery and avoiding entering the airflow passage.
It effectively avoids interference between the wire and the rotor assembly, ensures the normal operation of the fan, and maintains the flatness of the shell surface.
Smart Images
Figure CN222686896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic and electrical products, in particular to a radiator. Background Art
[0002] Cooling fans are widely used in home appliances, automobiles, security, communications, medical treatment, industrial control, electricity, printing, military industry, welding machines, instruments and meters, computers, power supplies and other fields.
[0003] The cooling fan mainly includes a shell, a stator assembly and a rotor assembly (fan wheel assembly). The shell is formed with a hollow cavity, an air inlet and an air outlet connecting the hollow cavity and the outside. The stator assembly is fixedly assembled in the cavity. The rotor assembly is rotatably assembled in the cavity and is electromagnetically coupled with the stator assembly. The winding of the stator assembly needs to be energized to generate electromagnetic force to drive the rotor assembly to rotate. The stator assembly is located at the center of the cooling fan, and an air flow channel is provided around it. The wires connected to the stator assembly need to be led to the periphery of the cooling fan through the air flow channel and connected to the power supply components. Utility Model Content
[0004] The technical problem solved by the utility model is that a wire limiting structure is arranged between the stator assembly and the periphery of the cooling fan to prevent the wire from entering the air flow channel of the cooling fan and interfering with the rotor assembly.
[0005] To solve the above technical problems, the utility model provides the following technical solutions: an axial flow fan with a wire limiting structure comprises a shell, a stator assembly and a rotor assembly, the shell forms a hollow cavity, an air inlet and an air outlet connecting the hollow cavity and the outside, the air inlet and the air outlet are arranged correspondingly in front and back, a stator assembly mounting plate is provided at the center of the air inlet, the stator assembly is fixedly assembled on the stator assembly mounting plate and is located in the cavity, the rotor assembly is rotatably assembled in the cavity and is electromagnetically coupled with the stator assembly, a wire hole and a first limiting groove are provided on the stator assembly mounting plate, a second limiting groove corresponding to the first limiting groove is provided on the edge of the shell, a limiting hook is provided on the periphery of the shell, and the limiting hook is located beside the second limiting groove.
[0006] The wire connected to the stator assembly is led out from the wire hole, enters the first limiting groove, crosses the air inlet, enters the second limiting groove, and then enters the limiting hook. In this way, the wire is led out from the stator assembly to the periphery of the axial flow fan, avoiding the wire entering the air inlet of the axial flow fan and interfering with the rotor assembly.
[0007] The wires are embedded in the first limiting groove and the second limiting groove, so that the surface of the shell is flat.
[0008] The housing is square, one corner of the housing is chamfered, the limit hook is set at the chamfer, the limit hook is L-shaped, and the limit hook and the chamfered housing form a square shape. In this way, the shape of the entire axial flow fan is still square, which is convenient for the axial flow fan to be installed in a fixed position of the electronic and electrical equipment. For example, the space reserved by the axial flow fan of the electronic and electrical equipment is a square, which can only accommodate a square axial flow fan.
[0009] The stator assembly mounting plate is connected to the housing body through a plurality of ribs, the plurality of ribs are distributed circumferentially along the stator assembly mounting plate, and one of the plurality of ribs is a side wall of the first limiting groove and the second limiting groove. The wire from the stator assembly can lean on the side wall of the rib and cross the air inlet, which is conducive to the stability of the wire.
[0010] A wedge-shaped hook head is arranged at the end of the limiting hook, and the hook head is convex inwardly, so as to prevent the wire in the limiting hook from escaping from the limiting hook.
[0011] The limit hook is equipped with an auxiliary hook. The limit hook and the auxiliary hook are arranged on the same side wall of the shell, and the limit hook and the auxiliary hook are arranged in opposite directions. The auxiliary hook and the limit hook have the same shape and are both arranged at the chamfer of the shell. Since the limit hook and the auxiliary hook are arranged in opposite directions, the wire can be manually inserted into the limit hook and the auxiliary hook, but the wire is not easy to automatically detach from the limit hook and the auxiliary hook, which is conducive to the stability of the wire position.
[0012] The inner wall of the limit hook is provided with a plurality of convex parts, and there is a gap between two adjacent convex parts. The wire entering the limit hook contacts with the convex parts, generating friction force, stabilizing the position of the wire and preventing it from bending and entering the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings:
[0014] Figure 1 is a schematic diagram of an axial flow fan;
[0015] Figure 2 is a top view of an axial flow fan;
[0016] Figure 3 This is a schematic diagram of an axial fan from another perspective.
[0017] Explanation of symbols in the figure:
[0018] 10. housing; 101. air inlet; 102. air outlet; 11. second limiting groove;
[0019] 20. stator assembly mounting plate; 21. first limiting groove; 22. rib; 23. decorative cover;
[0020] 30. limit hook; 31. hook head; 32. convex part;
[0021] 40. Auxiliary hook. DETAILED DESCRIPTION
[0022] refer to Figures 1 to 3 An axial flow fan with a wire limiting structure includes a shell 10, a stator assembly and a rotor assembly. The shell is formed with a hollow cavity, an air inlet 101 and an air outlet 102 connecting the hollow cavity and the outside. The air inlet and the air outlet are arranged correspondingly in front and behind. A stator assembly mounting plate 20 is provided at the center of the air inlet. The stator assembly is fixedly assembled on the stator assembly mounting plate and is located in the cavity. The rotor assembly is rotatably assembled in the cavity and is electromagnetically coupled with the stator assembly. A wire hole and a first limiting groove 21 are provided on the stator assembly mounting plate 20. The edge of the shell is provided with a second limiting groove 11 corresponding to the first limiting groove. A limiting hook 30 is provided on the periphery of the shell, and the limiting hook is located beside the second limiting groove.
[0023] The wire connected to the stator assembly is led out from the wire hole, enters the first limiting groove 21, crosses the air inlet 101, enters the second limiting groove 11, and then enters the limiting hook 30. In this way, the wire is led out from the stator assembly to the periphery of the axial flow fan, avoiding the wire from entering the air inlet 101 of the axial flow fan and interfering with the rotor assembly. The wire is embedded in the first limiting groove 21 and the second limiting groove 11, so that the surface of the housing 10 is flat.
[0024] The housing 10 is square, one corner of the housing is chamfered, the limit hook is arranged at the chamfer, the limit hook 30 is L-shaped, and the limit hook and the chamfered housing form a square shape. In this way, the shape of the entire axial flow fan is still square, which is convenient for the axial flow fan to be installed in a fixed position of the electronic and electrical equipment. For example, the space reserved by the axial flow fan of the electronic and electrical equipment is a square, which can only accommodate a square axial flow fan.
[0025] The stator assembly mounting plate 20 is connected to the housing body through a plurality of ribs 22, and the plurality of ribs are distributed along the circumference of the stator assembly mounting plate, and one of the plurality of ribs is the side wall of the first limiting groove 21 and the second limiting groove 11. The wire from the stator assembly can lean on the side wall of the rib 22 and cross the air inlet 101, which is conducive to the stability of the wire.
[0026] The end of the limiting hook 30 is provided with a wedge-shaped hook head 31. The hook head 31 is convex inwardly and can prevent the wire in the limiting hook 30 from escaping from the limiting hook.
[0027] The limiting hook 30 is equipped with an auxiliary hook 40, which is arranged on the same side wall of the housing 10 from top to bottom, and the limiting hook and the auxiliary hook are arranged in opposite directions. The auxiliary hook 40 has the same shape as the limiting hook 30, and is arranged at the chamfer of the housing 10. Since the limiting hook and the auxiliary hook are arranged in opposite directions, the wire can be manually inserted into the limiting hook 30 and the auxiliary hook 40, but the wire is not easy to automatically detach from the limiting hook and the auxiliary hook, which is conducive to the stability of the wire position.
[0028] The inner wall of the limit hook 30 is provided with a plurality of protrusions 32, and there is a gap between two adjacent protrusions. The wire entering the limit hook 30 contacts the protrusions 32, generating friction to stabilize the position of the wire and prevent it from bending and entering the air inlet 101.
[0029] The stator assembly mounting plate 20 is covered with a decorative cover 23 , which covers the wire hole and the first limiting groove 21 .
[0030] The above contents are only preferred implementation modes of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation mode and application scope. The content of this specification should not be understood as limiting the present invention.
Claims
1. An axial flow fan with a wire limiting structure, comprising a housing (10), a stator assembly and a rotor assembly, wherein the housing is formed with a hollow cavity, an air inlet (101) and an air outlet (102) communicating with the hollow cavity and the outside, the air inlet and the air outlet are arranged in front and back correspondence, a stator assembly mounting plate (20) is arranged at the center of the air inlet, the stator assembly is fixedly assembled on the stator assembly mounting plate and is located in the cavity, the rotor assembly is rotatably assembled in the cavity and is electromagnetically coupled with the stator assembly, and is characterized in that: A wire hole and a first limiting groove (21) are provided on the stator assembly mounting plate (20), a second limiting groove (11) corresponding to the first limiting groove is provided on the edge of the shell, and a limiting hook (30) is provided on the periphery of the shell, and the limiting hook is located beside the second limiting groove.
2. The axial flow fan with a wire limiting structure according to claim 1, characterized in that: The housing (10) is square, one corner of the housing is chamfered, a limit hook is arranged at the chamfered corner, the limit hook (30) is L-shaped, and the limit hook and the chamfered housing form a square shape.
3. The axial flow fan with a wire limiting structure according to claim 1, characterized in that: The stator assembly mounting plate (20) is connected to the housing body via a plurality of ribs (22), the plurality of ribs are distributed along the circumference of the stator assembly mounting plate, and one of the plurality of ribs is a side wall of the first limiting groove (21) and the second limiting groove (11).
4. The axial flow fan with a wire limiting structure according to claim 1, characterized in that: The end of the limiting hook (30) is provided with a wedge-shaped hook head (31).
5. The axial flow fan with a wire limiting structure according to claim 1, characterized in that: The limiting hook (30) is matched with an auxiliary hook (40), and the limiting hook and the auxiliary hook are arranged on the same side wall of the shell (10) up and down, and the limiting hook and the auxiliary hook are arranged in opposite directions.
6. The axial flow fan with a wire limiting structure according to claim 1, characterized in that: A plurality of convex parts (32) are arranged on the inner side wall of the limiting hook (30), and a gap is provided between two adjacent convex parts.