Fan motor mounting structure capable of saving space
By mounting the rotor inside the hub and connecting the shaft and rotor with an interference fit, the problem of large size of traditional fan motors is solved, achieving the effects of saving space and easy installation.
Patent Information
- Application Number
- CN202520985674.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2026-05-08
- Estimated Expiration
- 2035-05-19
AI Technical Summary
The shaft of a traditional fan motor is quite large after being connected to the fan blades, resulting in a large installation volume, wasting space resources, and a poor user experience.
The rotor is installed inside the hub, the stator is installed on the motor bracket, the inner ring of the bearing is connected to the shaft, and the shaft is connected to the rotor. The installation is carried out by interference fit, which simplifies the structure and reduces the overall size.
This design achieves a compact overall size after the fan motor and fan blades are connected, making installation convenient, saving space, and improving the user experience.
Smart Images

Figure CN224214446U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fan technology, specifically to a space-saving fan motor mounting structure. Background Technology
[0002] Fans are commonly used electrical appliances, and the fan motor is a crucial component that affects the fan's performance. The fan motor is typically connected to the fan blades to deliver airflow. However, traditional fan motors have a shaft that connects to the fan blades, with the shaft extending out before connecting to the blades. This results in a large overall size after connection, leading to a bulky installation, wasted space, and a poor user experience. Therefore, to avoid the shortcomings of existing technology, it is necessary to improve it. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a simple and space-saving fan motor mounting structure.
[0004] This utility model is achieved through the following technical solution:
[0005] A space-saving fan motor mounting structure includes a motor bracket, a fan motor, and fan blades. The fan motor includes a stator and a rotor. The fan blades include a hub. The rotor is mounted on the inner side of the hub. The stator is mounted on the motor bracket. The motor bracket is equipped with a bearing. The inner ring of the bearing is connected to a rotating shaft, and the rotating shaft is connected to the rotor.
[0006] Furthermore, the inner side of the hub is provided with a mounting groove for mounting the rotor, and the rotor is interference-fitted with the hub.
[0007] Furthermore, the rotor includes a rotor housing, and a magnetic ring is installed on the inner side of the rotor housing.
[0008] Furthermore, the rotor housing is provided with a connecting sleeve hole for connecting the rotating shaft, and the rotating shaft is interference-fitted with the connecting sleeve hole.
[0009] Furthermore, the rotor housing is provided with several heat dissipation holes.
[0010] Furthermore, the motor bracket is provided with a bearing mounting hole for mounting the bearing, the bearing is interference-fitted with the bearing mounting hole, the motor bracket is provided with a connecting column, and the inner side of the stator is provided with a connecting hole for mounting the connecting column, the connecting column is interference-fitted with the connecting hole.
[0011] Furthermore, the outer side of the motor bracket is provided with several mounting holes, and the outer side of the motor bracket is provided with control board mounting holes.
[0012] Furthermore, the stator includes a stator core and a plurality of stator windings evenly distributed on the outside of the core.
[0013] Furthermore, several L-shaped support plates are evenly distributed on the inner side of the hub, abutting against the outer side of the rotor.
[0014] Furthermore, the L-shaped support plate is provided with reinforcing ribs.
[0015] Compared to existing technologies, this utility model has a simple structure and is easy to install. The rotor is installed inside the hub, the stator is installed on the motor bracket, the motor bracket is equipped with a bearing, the inner ring of the bearing is connected to a rotating shaft, and the rotating shaft is connected to the rotor. This allows the fan motor to be installed inside the hub, and the rotor is connected to the fan blades. The overall size of the fan motor and fan blades is small, the installation size is small, space resources are saved, and the user experience is good. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the space-saving fan motor mounting structure of this utility model;
[0018] Figure 2 An exploded view of the space-saving fan motor mounting structure of this utility model.
[0019] In the diagram: 1-Motor bracket; 2-Fan blade; 3-Stator; 4-Rotor; 5-Hub; 6-Bearing; 7-Shaft; 8-Mounting slot; 9-Rotor housing; 10-Magnetic ring; 11-Connecting sleeve hole; 12-Heat dissipation hole; 13-Bearing mounting hole; 14-Connecting column; 15-Connecting hole; 16-Mounting hole; 17-Control board mounting hole; 18-Stator core; 19-Stator winding; 20-L-shaped support plate; 21-Reinforcing rib. Detailed Implementation
[0020] 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.
[0021] like Figure 1 and Figure 2 This utility model discloses a space-saving fan motor mounting structure, including a motor bracket 1, a fan motor, and fan blades 2. The fan motor includes a stator 3 and a rotor 4. The fan blades 2 include a hub 5. The rotor 4 is mounted on the inner side of the hub 5. The stator 3 is mounted on the motor bracket 1. The motor bracket 1 is equipped with a bearing 6. The inner ring of the bearing 6 is connected to a rotating shaft 7, which is connected to the rotor 4. By mounting the rotor 4 on the inner side of the hub 5, the stator 3 on the motor bracket 1, and the bearing 6 on the motor bracket 1, with the inner ring of the bearing 6 connected to the rotating shaft 7, which is connected to the rotor 4, the fan motor is mounted on the inner side of the hub 5, and the rotor 4 is connected to the fan blades 2. The structure is simple, easy to install, and the overall size of the fan motor and fan blades 2 after connection is small, saving space and providing a good user experience.
[0022] The inner side of the hub 5 is provided with a mounting groove 8 for the rotor 4 to be installed. The rotor 4 is interference-fitted with the hub 5, which facilitates the positioning and installation of the fan motor. The rotor 4 can be glued to the hub 5 to improve the stability of the installation.
[0023] The rotor 4 includes a rotor housing 9, and a magnetic ring 10 is installed on the inner side of the rotor housing 9. The stator 3 is located on the inner side of the magnetic ring 10, which makes the rotor 4 simple in structure and stable in operation.
[0024] The rotor housing 9 is provided with a connecting sleeve hole 11 for connecting the rotating shaft 7. The rotating shaft 7 is interference-fitted with the connecting sleeve hole 11, which facilitates the stable installation of the rotating shaft 7.
[0025] The rotor housing 9 is provided with several heat dissipation holes 12 to improve the heat dissipation effect of the fan motor.
[0026] The motor bracket 1 is provided with a bearing mounting hole 13 for mounting the bearing 6. The bearing 6 is interference-fitted with the bearing mounting hole 13, making the installation of the bearing 6 more convenient and more stable.
[0027] The motor bracket 1 is provided with a connecting column 14, and the inner side of the stator 3 is provided with a connecting hole 15 for the connecting column 14 to be installed. The connecting column 14 and the connecting hole 15 are interference fit, which makes the stator 3 easier to install and more stable.
[0028] The motor bracket 1 has several mounting holes 16 on its outer side to facilitate the installation of the motor bracket 1, and the motor bracket 16 has control board mounting holes 17 on its outer side to facilitate the installation of the control board.
[0029] The stator 3 includes a stator core 18 and several stator windings 19 evenly distributed on the outside of the core 18.
[0030] Several L-shaped support plates 20 are evenly distributed on the inner side of the hub 5, which abut against the outer side of the rotor 4, to facilitate the quick and stable installation of the rotor 4.
[0031] The L-shaped support plate 20 is provided with reinforcing ribs 21 to improve the structural strength of the L-shaped support plate 20 and make the rotor 4 more stable to install.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A space-saving fan motor mounting structure, characterized in that: The device includes a motor bracket, a fan motor, and fan blades. The fan motor includes a stator and a rotor. The fan blades include a hub. The rotor is mounted on the inner side of the hub. The stator is mounted on the motor bracket. The motor bracket is equipped with a bearing. The inner ring of the bearing is connected to a rotating shaft, and the rotating shaft is connected to the rotor.
2. The space-saving fan motor mounting structure according to claim 1, characterized in that: The inner side of the hub is provided with a mounting groove for mounting the rotor, and the rotor is interference-fitted with the hub.
3. The space-saving fan motor mounting structure according to claim 1, characterized in that: The rotor includes a rotor housing, and a magnetic ring is installed on the inner side of the rotor housing.
4. The space-saving fan motor mounting structure according to claim 2, characterized in that: The rotor housing is provided with a connecting sleeve hole for connecting the rotating shaft, and the rotating shaft is interference-fitted with the connecting sleeve hole.
5. The space-saving fan motor mounting structure according to claim 2, characterized in that: The rotor housing is provided with several heat dissipation holes.
6. The space-saving fan motor mounting structure according to claim 1, characterized in that: The motor bracket is provided with a bearing mounting hole for mounting the bearing. The bearing is interference-fitted with the bearing mounting hole. The motor bracket is provided with a connecting column. The inner side of the stator is provided with a connecting hole for mounting the connecting column. The connecting column is interference-fitted with the connecting hole.
7. The space-saving fan motor mounting structure according to claim 1, characterized in that: The motor bracket has several mounting holes on its outer side, and a control board mounting hole is also provided on its outer side.
8. The space-saving fan motor mounting structure according to claim 1, characterized in that: The stator includes a stator core and several stator windings evenly distributed on the outside of the core.
9. The space-saving fan motor mounting structure according to claim 1, characterized in that: The inner side of the hub is provided with several L-shaped support plates that abut against the outer side of the rotor.
10. The space-saving fan motor mounting structure according to claim 9, characterized in that: The L-shaped support plate is equipped with reinforcing ribs.