A rear housing structure of a fan
Patent Information
- Application Number
- CN202521934324.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-09
AI Technical Summary
传统风扇电机多采用固定式安装结构，电池、电机、控制线路板等部件分别独立安装，内部布置零散，安装和维修较为繁琐
[0015]本实用新型主要具有以下有益效果：该安装壳体的内部设有安装凹槽，该安装凹槽的内部安装有充电电池，该安装壳体的前端安装有扇叶电机，该扇叶电机的前端设有电机转杆，该安装壳体的上端分别安装有电池压板和线路板支架，该线路板支架的内部安装有控制线路板，该安装凹槽的内下部安装有同步电机，该安装壳体的前下端安装有连杆轴套，该同步电机与该连杆轴套之间连接有电机连杆，该控制线路板分别通过电源线与该充电电池、该扇叶电机和该同步电机之间电连接，本实用新型的风扇的后壳结构整体设计紧凑，内部电池、线路板及电机均通过压板、支架及紧固件可靠固定，保证运行过程中的稳定性，同时，同步电机通过电机连杆带动连杆轴套，实现风扇的左右摇摆功能，扩展了风扇的送风范围，控制线路板可实现对扇叶电机的启停及转速调节，并对同步电机进行控制，操作简便，功能齐全。该结构不仅便于安装与拆卸，方便后期的维护和更换，而且通过充电电池与外接电源双供电模式，提升了风扇使用的灵活性和适用性。
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Figure CN224648820U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fan motor technology, specifically relating to a fan rear shell structure that is easy to install and maintain. Background Technology
[0002] As a common household appliance, the core component of a fan is its motor. Traditional fan motors often employ a fixed mounting structure, with the battery, motor, and control circuit board installed independently. This results in a fragmented internal layout, making installation and maintenance cumbersome. During operation, due to vibration and prolonged use, the internal battery or motor in traditional structures is prone to loosening or shifting, leading to unstable power supply or abnormal fan operation. Furthermore, the control circuit board of traditional fan motors typically uses a single mounting method, which is inconvenient for disassembly, assembly, and subsequent maintenance.
[0003] For fans with oscillation functions, traditional designs typically achieve this through complex mechanical transmission mechanisms or distributed motor layouts. This results in bulky mechanical structures, large space requirements, and increased manufacturing costs and failure rates. Furthermore, most fan motors rely on a fixed power supply, lacking rechargeable batteries or dual power supply designs, leading to poor usability.
[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content
[0005] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a fan rear housing structure that is easy to install and maintain, so as to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a rear shell structure for a fan, comprising a mounting shell, an internal mounting groove for housing a rechargeable battery, a fan blade motor for mounting at the front end of the mounting shell, a motor rotor for mounting at the front end of the fan blade motor, a battery pressure plate and a circuit board bracket for mounting at the upper end of the mounting shell, a control circuit board for mounting inside the circuit board bracket, a synchronous motor for mounting at the lower inner part of the mounting groove, a connecting rod bushing for mounting at the lower front end of the mounting shell, a motor connecting rod connecting the synchronous motor and the connecting rod bushing, and the control circuit board being electrically connected to the rechargeable battery, the fan blade motor, and the synchronous motor via power lines.
[0007] Furthermore, a motor housing is fitted on the outer side of the mounting housing, a front cover is installed on the front end of the motor housing, a number of fixing pins are evenly provided on the inner side of the motor housing, and a number of fixing holes are evenly provided on the surface of the front cover. The number of fixing holes corresponds one-to-one with the number of fixing pins, and fasteners are used to pass through the fixing holes and connect and fix them to the fixing pins.
[0008] Furthermore, the inner surface of the front cover of the outer casing is uniformly provided with a plurality of first motor through holes, and the front part of the fan blade motor is uniformly provided with a plurality of second motor through holes. The plurality of first motor through holes and the plurality of second motor through holes correspond one to one, and are connected and fixed by fasteners passing through the first motor through holes and the second motor through holes.
[0009] Furthermore, the surface of the control circuit board is evenly provided with several control buttons, and the rear end of the control circuit board is provided with a charging connector and a power plug. The charging connector is electrically connected to the rechargeable battery, and the power plug is electrically connected to the fan blade motor and the synchronous motor.
[0010] Furthermore, the upper two sides of the mounting housing are respectively provided with a number of pressure plate through-posts and a number of bracket through-posts. The battery pressure plate is symmetrically provided with a number of pressure plate through-holes on both sides. The number of pressure plate through-holes corresponds one-to-one with the number of pressure plate through-posts, and is connected and fixed by fasteners passing through the pressure plate through-holes and pressure plate through-posts.
[0011] Furthermore, the circuit board bracket has several bracket through holes symmetrically opened on both sides, and the bracket through holes correspond one-to-one with the bracket through posts, and are connected and fixed by fasteners passing through the bracket through holes and bracket through posts.
[0012] Furthermore, the lower inner part of the mounting groove is provided with a mounting post, and the synchronous motor is provided with mounting plates symmetrically on both sides. The mounting plates are set on the mounting post and are connected and fixed to the mounting post by fasteners passing through the mounting plates.
[0013] Furthermore, a connecting rod bracket is installed on the upper end of the connecting rod bushing, and a connecting rod mounting position is provided at the lower front end of the mounting housing. The connecting rod bracket is correspondingly located at the lower end of the connecting rod mounting position and is connected and fixed to the connecting rod mounting position by fasteners passing through the connecting rod bracket.
[0014] Furthermore, the lower end of the synchronous motor is connected to a first connecting rod connector, the upper end of the connecting rod bushing is connected to a second connecting rod connector, one end of the motor connecting rod is connected to the first connecting rod connector by a fastener, and the other end of the motor connecting rod is connected to the second connecting rod connector by a fastener.
[0015] The present invention has the following advantages: The mounting housing has an internal mounting groove in which a rechargeable battery is installed. A fan motor is mounted at the front end of the mounting housing, and a motor rotor is located at the front end of the fan motor. A battery pressure plate and a circuit board bracket are mounted on the upper end of the mounting housing, and a control circuit board is installed inside the circuit board bracket. A synchronous motor is mounted in the lower inner part of the mounting groove. A connecting rod bushing is mounted on the lower front end of the mounting housing, and a motor connecting rod connects the synchronous motor and the connecting rod bushing. The control circuit board is electrically connected to the rechargeable battery, the fan motor, and the synchronous motor via power lines. The rear shell structure of the fan in this invention has a compact overall design. The internal battery, circuit board, and motor are reliably fixed by the pressure plate, bracket, and fasteners, ensuring stability during operation. Simultaneously, the synchronous motor drives the connecting rod bushing via the motor connecting rod, realizing the left-right oscillation function of the fan and expanding the fan's airflow range. The control circuit board can start / stop the fan motor and adjust its speed, and also control the synchronous motor. It is easy to operate and has complete functions. This structure not only facilitates installation and disassembly, making maintenance and replacement easier, but also enhances the flexibility and applicability of the fan through a dual power supply mode of rechargeable battery and external power supply. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model.
[0018] Figure 3 This is a schematic diagram of the mounting housing structure of this utility model.
[0019] Figure 4 This is an exploded structural diagram of the mounting housing, synchronous motor, connecting rod bushing, and motor connecting rod of this utility model.
[0020] Figure 5 This is a schematic diagram of the control circuit board structure of this utility model.
[0021] Reference numerals: Mounting housing 10; Mounting groove 11; Rechargeable battery 20; Fan blade motor 30; Motor rotor 31; Battery pressure plate 12; Circuit board bracket 13; Control circuit board 40; Synchronous motor 50; Connecting rod bushing 60; Motor connecting rod 70; Motor housing 80; Housing front cover 81; Fixing through post 82; Fixing through hole 811; First motor through hole 812; Second motor through hole 32; Control button 41; Charging connector 42; Power plug 43; Pressure plate through post 14; Bracket through post 15; Pressure plate through hole 121; Bracket through hole 131; Mounting through post 111; Mounting through piece 51; Connecting rod bracket 61; Connecting rod mounting position 16; First connecting rod connector 52; Second connecting rod connector 62. Detailed Implementation
[0022] like Figures 1 to 5 As shown, a fan rear housing structure includes a mounting housing 10. The mounting housing 10 has a mounting groove 11 inside, where a rechargeable battery 20 is installed. A fan blade motor 30 is mounted at the front end of the mounting housing 10, and a motor rotor 31 is located at the front end of the fan blade motor 30. A battery pressure plate 12 and a circuit board bracket 13 are respectively mounted on the upper end of the mounting housing 10. A control circuit board 40 is installed inside the circuit board bracket 13. A synchronous motor 50 is mounted in the lower part of the mounting groove 11. A connecting rod bushing 60 is installed at the lower front end of the body 10. A motor connecting rod 70 connects the synchronous motor 50 to the connecting rod bushing 60. The control circuit board 40 is electrically connected to the rechargeable battery 20, the fan blade motor 30, and the synchronous motor 50 via power lines. In use, the rechargeable battery 20 provides DC power to the fan blade motor 30 and the synchronous motor 50. The control circuit board 40 controls the start, stop, and speed of the fan blade motor 30, thereby driving the motor rotor 31 to drive the fan blades to rotate and achieve the air delivery function. At the same time, the control circuit board 40 sends a drive signal to the synchronous motor 50, which drives the connecting rod bushing 60 to rotate reciprocally through the motor connecting rod 31, thereby achieving the left and right oscillation function of the fan body. The clamping structure of the battery clamping plate 12 ensures that the rechargeable battery 20 is firmly fixed within the mounting housing 10 and will not shift due to vibrations during long-term operation. The mounting method of the circuit board bracket 13 allows for easy disassembly and replacement of the control circuit board 40, improving the convenience of later maintenance. The overall design of the fan's rear housing is compact, making installation and maintenance convenient.
[0023] In specific implementation, a motor housing 80 is fitted onto the outer side of the mounting housing 10. A front cover 81 is installed at the front end of the motor housing 80. A plurality of fixing pins 82 are evenly distributed on the inner side of the motor housing 80. A plurality of fixing holes 811 are evenly distributed on the surface of the front cover 81. Each fixing hole 811 corresponds to one of the fixing pins 82, and fasteners are used to connect and fix them to the fixing pins 82 through the fixing holes 811. A plurality of first motor holes 812 are evenly distributed on the inner surface of the front cover 81. The front part of the fan blade motor 30... A plurality of second motor through holes 32 are evenly provided, and the plurality of first motor through holes 812 correspond one-to-one with the plurality of second motor through holes 32. Fasteners are used to connect and fix the first motor through holes 812 and the second motor through holes 32. In use, the front cover 81 of the outer casing is connected to the fixed through holes 811 and fixed through posts 82 via fasteners, which can firmly seal the motor casing 80, ensuring that the internally installed fan motor 30, rechargeable battery 20, and control circuit board 40 are not easily affected by the external environment, thereby improving overall protection performance and service life. At the same time, the fastener connection between the first motor through holes 812 and the second motor through holes 32 can reliably fix the front end of the fan motor 30 to the front cover 81 of the outer casing, keeping the motor rotor 70 stable during operation and preventing displacement due to vibration or high-speed rotation. The above structural design not only enables the quick assembly and disassembly of the motor housing 80 and the front cover 81, facilitating subsequent maintenance or replacement of parts, but also enhances the installation stability of the fan motor, further ensuring the safety and reliability of the fan operation.
[0024] In practical implementation, the surface of the control circuit board 40 is evenly provided with several control buttons 41, which allow users to start and stop the fan motor 30, adjust its speed, and control the swing of the synchronous motor 50 through the control buttons 41. The rear end of the control circuit board 40 is provided with a charging connector 42 and a power connector 43. The charging connector 42 is electrically connected to the rechargeable battery 20 and is used to charge the rechargeable battery 20 when an external power source is connected. The power connector 43 is electrically connected to the fan motor 30 and the synchronous motor 50 and is used to directly drive the fan motor and the synchronous motor through an external DC power source when needed.
[0025] In practical implementation, the upper sides of the mounting housing 10 are respectively provided with a plurality of pressure plate through posts 14 and a plurality of bracket through posts 15. The battery pressure plate 12 has a plurality of pressure plate through holes 121 symmetrically opened on both sides, with each through hole corresponding to one of the pressure plate through posts 14. Fasteners are used to connect and fix the pressure plate through holes 121 to the pressure plate through posts 14. Similarly, the circuit board bracket 13 has a plurality of bracket through holes 131 symmetrically opened on both sides, with each through hole corresponding to one of the bracket through posts 15. Fasteners are used to connect and fix the bracket through holes 131 to the bracket through posts 15. The bracket through-hole 131 is connected and fixed to the bracket through-post 15, thereby fixing the battery pressure plate 12 and the circuit board bracket 13 on the mounting housing 10. In use, the battery pressure plate 12 is fixed to the mounting housing 10 by fasteners, which can reliably press the rechargeable battery 20 to prevent the rechargeable battery 20 from loosening due to vibration or position displacement during fan operation, thus ensuring the stability of battery power supply. The circuit board bracket 13 is fixed to the mounting housing 10 by fasteners to prevent displacement or damage due to heat or external force interference during long-term operation.
[0026] In practical implementation, the lower inner part of the mounting groove 11 is provided with a mounting post 111, and the synchronous motor 50 is symmetrically provided with mounting plates 51 on both sides. The mounting plates 51 are set on the mounting post 111 and are connected and fixed to the mounting post 111 by fasteners passing through the mounting plates 51. In use, the mounting plates 51 and the mounting post 111 are fixed by fasteners, so that the synchronous motor 50 is stably installed in the lower inner part of the mounting groove 11, avoiding displacement or loosening due to vibration or torque during motor operation, thereby ensuring the transmission stability of the motor connecting rod.
[0027] In practical implementation, a connecting rod bracket 61 is installed on the upper end of the connecting rod bushing 60, and a connecting rod mounting position 16 is provided at the lower front end of the mounting housing 10. The connecting rod bracket 61 is correspondingly set at the lower end of the connecting rod mounting position 16, and is connected and fixed to the connecting rod mounting position 16 by fasteners passing through the connecting rod bracket 61, so that the connecting rod bushing 60 is installed at the lower front end of the mounting housing 10. In use, the connecting rod bracket 61 is fixedly connected to the connecting rod mounting position 16 of the mounting housing 10 by fasteners, so that the connecting rod bushing 60 is stably installed at the lower front end of the mounting housing 10, thereby ensuring that the motor connecting rod 70 can rotate smoothly with the connecting rod bushing 60 as the fulcrum during transmission.
[0028] In practical implementation, the lower end of the synchronous motor 50 is connected to a first connecting rod connector 52, and the upper end of the connecting rod bushing 60 is connected to a second connecting rod connector 62. One end of the motor connecting rod 70 is connected to the first connecting rod connector 52 by a fastener, and the other end of the motor connecting rod 70 is connected to the second connecting rod connector 62 by a fastener, thereby connecting the motor connecting rod 70 between the synchronous motor 50 and the connecting rod bushing 60. In use, the motor connecting rod 70 is connected to the output end of the synchronous motor 50 through the first connecting rod connector 52 and to the connecting rod bushing 60 through the second connecting rod connector 62. When the synchronous motor 50 starts, its output shaft drives the first connecting rod connector 52 to rotate, thereby driving the motor connecting rod 70 to reciprocate, and then driving the connecting rod bushing 60 to swing through the second connecting rod connector 62, realizing the left and right swinging function of the fan body. This structure makes the transmission of the motor connecting rod 70 more stable and reliable, effectively avoiding loosening or misalignment caused by high-speed operation.
[0029] In summary, the mounting housing 10 has an internal mounting groove 11, inside which a rechargeable battery 20 is installed. A fan motor 30 is mounted at the front end of the mounting housing 10, and a motor rotor 31 is located at the front end of the fan motor 30. A battery pressure plate 12 and a circuit board bracket 13 are mounted at the upper end of the mounting housing 10, and a control circuit board 40 is installed inside the circuit board bracket 13. A synchronous motor 50 is mounted in the lower inner part of the mounting groove 11. A connecting rod bushing 60 is mounted at the lower front end of the mounting housing 10, and the synchronous motor 50 is connected to the connecting rod bushing 60 by a [connection / connection mechanism]. The motor connecting rod 70 and the control circuit board 40 are electrically connected to the rechargeable battery 20, the fan blade motor 30, and the synchronous motor 50 via power lines. The rear shell structure of this fan is compactly designed, with the internal battery, circuit board, and motor reliably secured by pressure plates, brackets, and fasteners to ensure stability during operation. Simultaneously, the synchronous motor drives the connecting rod bushing via the motor connecting rod, enabling the fan to oscillate left and right, expanding the fan's airflow range. The control circuit board can start / stop the fan blade motor and adjust its speed, as well as control the synchronous motor, making operation simple and providing comprehensive functions. This structure not only facilitates installation and disassembly, simplifying future maintenance and replacement, but also enhances the fan's flexibility and applicability through a dual power supply mode of rechargeable battery and external power source.
Claims
1. A rear housing structure for a fan, characterized in that, It includes a mounting housing (10), which has a mounting groove (11) inside. A rechargeable battery (20) is installed inside the mounting groove (11). A fan motor (30) is installed at the front end of the mounting housing (10). A motor rotor (31) is provided at the front end of the fan motor (30). A battery pressure plate (12) and a circuit board bracket (13) are installed at the upper end of the mounting housing (10). A control circuit board (40) is installed inside the circuit board bracket (13). A synchronous motor (50) is installed in the lower part of the mounting groove (11). A connecting rod bushing (60) is installed at the lower front end of the mounting housing (10). A motor connecting rod (70) is connected between the synchronous motor (50) and the connecting rod bushing (60). The control circuit board (40) is electrically connected to the rechargeable battery (20), the fan motor (30), and the synchronous motor (50) through a power line.
2. The rear housing structure of the fan according to claim 1, characterized in that, The outer side of the mounting housing (10) is fitted with a motor housing (80). The front end of the motor housing (80) is fitted with a front cover (81). The inner side of the motor housing (80) is evenly provided with a number of fixing pins (82). The surface of the front cover (81) is evenly provided with a number of fixing holes (811). The number of fixing holes (811) corresponds one-to-one with the number of fixing pins (82), and they are connected and fixed by fasteners passing through the fixing holes (811) and the fixing pins (82).
3. The rear housing structure of the fan according to claim 2, characterized in that, The inner surface of the front cover (81) of the outer shell is uniformly provided with a plurality of first motor through holes (812), and the front part of the fan blade motor (30) is uniformly provided with a plurality of second motor through holes (32). The plurality of first motor through holes (812) and the plurality of second motor through holes (32) correspond one to one, and are connected and fixed by fasteners passing through the first motor through holes (812) and the second motor through holes (32).
4. The rear housing structure of the fan according to claim 1, characterized in that, The surface of the control circuit board (40) is uniformly provided with several control buttons (41). The rear end of the control circuit board (40) is provided with a charging connector (42) and a power plug (43). The charging connector (42) is electrically connected to the rechargeable battery (20), and the power plug (43) is electrically connected to the fan blade motor (30) and the synchronous motor (50).
5. The rear housing structure of the fan according to claim 1, characterized in that, The upper sides of the mounting housing (10) are provided with several pressure plate through-posts (14) and several bracket through-posts (15). Several pressure plate through-holes (121) are symmetrically opened on both sides of the battery pressure plate (12). The several pressure plate through-holes (121) correspond one-to-one with the several pressure plate through-posts (14), and are connected and fixed to the pressure plate through-posts (14) by fasteners passing through the pressure plate through-holes (121).
6. The rear housing structure of the fan according to claim 5, characterized in that, The circuit board bracket (13) has several bracket through holes (131) symmetrically opened on both sides. The bracket through holes (131) correspond one-to-one with the bracket through posts (15), and are connected and fixed by fasteners passing through the bracket through holes (131) and bracket through posts (15).
7. The rear housing structure of the fan according to claim 1, characterized in that, The lower inner part of the mounting groove (11) is provided with a mounting post (111), and the synchronous motor (50) is provided with mounting plates (51) symmetrically on both sides. The mounting plates (51) are set on the mounting post (111) and are connected and fixed to the mounting post (111) by fasteners passing through the mounting plates (51).
8. The rear housing structure of the fan according to claim 1, characterized in that, The upper end of the connecting rod bushing (60) is equipped with a connecting rod bracket (61), and the lower front end of the mounting housing (10) is provided with a connecting rod mounting position (16). The connecting rod bracket (61) is correspondingly located at the lower end of the connecting rod mounting position (16), and is connected and fixed to the connecting rod mounting position (16) by fasteners passing through the connecting rod bracket (61).
9. The rear housing structure of the fan according to claim 8, characterized in that, The lower end of the synchronous motor (50) is connected to a first connecting rod connector (52), and the upper end of the connecting rod bushing (60) is connected to a second connecting rod connector (62). One end of the motor connecting rod (70) is connected to the first connecting rod connector (52) by a fastener, and the other end of the motor connecting rod (70) is connected to the second connecting rod connector (62) by a fastener.