Fan with self-powered control panel

Abstract

The utility model relates to the technical field of electric fans, in particular to a fan with a self-powered control panel, which comprises a fan head, a control panel module connected with the fan head, and a passive power generation device arranged between the fan head and the control panel module. The passive power generation device is electrically connected with the control panel module, and power is supplied to the control panel module through the passive power generation device. The passive power generation device is arranged between the control panel module and the fan head, the passive power generation device can receive the mechanical energy generated by rotation of the fan blades and convert the mechanical energy into the electric energy, and the passive power generation device transmits the electric energy into the control panel module, so that the control panel module operates, and self power generation of the control panel module is achieved; the circuit connection of the control panel module in the fan is simplified, and the assembly difficulty of the control panel module is reduced, so that the assembly efficiency of the fan is improved, and the later maintenance of the control panel module and the fan is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric fan, especially fan with self -power control panel. BACKGROUND

[0002] The existing electric fan is usually configured with a control panel, which is connected to the total power supply device of the electric fan through multiple wires. Correspondingly, an additional lead channel for the power supply wire needs to be set inside the electric fan, resulting in complicated connection of the internal lines of the electric fan. When the control panel and the total power supply device are not arranged on the same straight line, due to the size and other structures of the electric fan, the lead channel needs to be adjusted accordingly to bypass other structures, resulting in more complicated internal lines of the electric fan. This increases the assembly difficulty of the control panel in the electric fan, reduces the assembly efficiency of the electric fan, and increases the disassembly and assembly difficulty of the control panel, which is not conducive to the later maintenance of the control panel and the electric fan.

[0003] The utility model is proposed to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model proposes a fan with a self-powered control panel to solve the problem of the complicated internal lines of the electric fan caused by the connection of the control panel and the total power supply device through multiple wires, which increases the assembly difficulty of the control panel in the electric fan, reduces the assembly efficiency of the electric fan, and increases the disassembly and assembly difficulty of the control panel, which is not conducive to the later maintenance of the control panel and the electric fan.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] The fan with a self-powered control panel comprises a fan head, a control panel module connected to the fan head, and a passive power generation device arranged between the fan head and the control panel module. The passive power generation device is electrically connected to the control panel module and supplies power to the control panel module through the passive power generation device.

[0007] The fan with a self-powered control panel as described above comprises a fan head, a fan blade member that can rotate axially, and a rotating device connected to the fan blade member. The passive power generation device comprises an induction coil and a permanent magnet arranged in opposition. The induction coil is electrically connected to the control panel module, and the permanent magnet is connected to the fan blade member. The rotating device drives the fan blade member to rotate axially, which drives the permanent magnet to rotate relative to the induction coil, triggering the induction coil to supply power to the control panel module.

[0008] The fan with a self-powered control panel as described above, the induction coil comprises a first connecting section and a second connecting section for connecting the control panel module, and a coil section between the first connecting section and the second connecting section, the coil section is wound around the axis to form a plurality of spaced-apart hierarchical coils, and the outer diameter of the coil section gradually increases from the side close to the permanent magnet to the side away from the permanent magnet.

[0009] The fan with a self-powered control panel as described above, the induction coil comprises a first connecting section and a second connecting section for connecting the control panel module, and a coil section between the first connecting section and the second connecting section, the coil section is wound around the axis to form a plurality of spaced-apart hierarchical coils, and the outer diameter of the coil section gradually increases from the side close to the permanent magnet to the side away from the permanent magnet.

[0010] The fan with a self-powered control panel as described above, along the axis of the induction coil, the projected area of the permanent magnet is less than or equal to the projected area of the induction coil.

[0011] The fan with a self-powered control panel as described above, the fan blade member comprises a fan blade sleeve, a plurality of blades spaced apart along the outer peripheral side of the fan blade sleeve, the permanent magnet is fixedly installed in the fan blade sleeve and faces the induction coil.

[0012] The fan with a self-powered control panel as described above, the fan blade sleeve is provided with a first mounting cavity open to the induction coil, and at least part of the permanent magnet is arranged in the first mounting cavity.

[0013] The fan with a self-powered control panel as described above, the permanent magnet is fixedly connected with the fan blade sleeve through a mounting bracket, the mounting bracket is provided with a second mounting cavity facing the first mounting cavity and a connecting portion connected with the rotating device, the permanent magnet is arranged in the second mounting cavity, and the connecting portion is arranged on one side of the second mounting cavity.

[0014] The fan with a self-powered control panel as described above, the control panel module comprises a circuit board, an operation unit and at least one battery electrically connected with the circuit board, the induction coil is electrically connected with the circuit board, and the induction coil is arranged on the side of the circuit board facing the permanent magnet, and the operation unit and the battery are arranged on the side of the circuit board away from the permanent magnet.

[0015] The fan with a self-powered control panel as described above, a gap is formed between the induction coil and the circuit board.

[0016] Compared with the prior art, the fan with a self-powered control panel has the advantages that:

[0017] The fan in this invention eliminates the wire connection between the control panel module and the main power supply of the fan. By setting a passive power generation device between the control panel module and the fan head, the passive power generation device can receive the mechanical energy of the fan blade rotation and convert it into electrical energy. The electrical energy is then transmitted to the control panel module to enable the control panel module to operate, thereby realizing the self-powered function of the control panel module. This simplifies the wiring connection of the control panel module in the fan, reduces the assembly difficulty of the control panel module, and promotes the quick assembly and disassembly of the control panel module, thereby improving the assembly efficiency of the fan and facilitating the later maintenance of the control panel module and the fan.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a perspective view of the fan head of this utility model;

[0020] Figure 2 Disassembly of the fan head of this utility model Figure 1 ;

[0021] Figure 3 Disassembly of the fan head of this utility model Figure 2 ;

[0022] Figure 4 This is a perspective view of the induction coil of this utility model;

[0023] Figure 5 This is a structural diagram of the passive power generation device of this utility model;

[0024] Figure 6 for Figure 1 Sectional view A-A in the middle;

[0025] Figure 7 for Figure 6 Local magnification in Figure 1 ;

[0026] Figure 8 for Figure 6 Local magnification in Figure 2 . Detailed Implementation

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings. The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that all the directionality indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0029] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0030] Embodiment 1:

[0031] As Figure 1The utility model provides a fan with self -power control panel, including fan head 1, control panel module 2 and passive power generation device 3, control panel module 2 with fan head 1 is detachably connected, control panel module 2 is preferably located in the middle position of one side of fan head 1, and control panel module 2 is towards the side away from fan head 1 to facilitate user operation, passive power generation device 3 is located between fan head 1 with control panel module 2, passive power generation device 3 with control panel module 2 electric connection, fan head 1 has the running state of fan blade rotation and the shutdown state of fan blade static, when fan head 1 is in running state, passive power generation device 3 receives the mechanical energy of fan blade rotation from fan head 1, and this mechanical energy is converted to the electric energy for controlling control panel module 2 operation, to realize by passive power generation device 3 for control panel module 2 power supply. Compared with the mode that the control panel of traditional fan is connected with fan total power supply through multiple electric wires, the electric wire connection between control panel module 2 and fan total power supply is cancelled in the fan of the embodiment, by setting passive power generation device 3 between control panel module 2 with fan head 1, passive power generation device 3 can receive the mechanical energy of fan blade rotation and convert to electric energy, and through passive power generation device 3, electric energy is transmitted to control panel module 2, makes control panel module 2 operation, to realize the function of self -power control panel module 2, simplifies the line connection of control panel module 2 in fan, reduces the assembly difficulty of control panel module 2, promotes the quick disassembly of control panel module 2, thereby improves the assembly efficiency of fan, the post -maintenance of control panel module 2 and fan is convenient.

[0032] Embodiment 2:

[0033] Embodiment 2 is based on embodiment 1, and has the following implementation ways, such as Figure 1As shown in Fig. 8, the fan head 1 comprises an axially rotatable fan blade member 11, a rotating device 12 connected with the fan blade member 11, the rotating device 12 being used to drive the fan blade member 11 to rotate axially, the passive power generation device 3 comprises an induction coil 31 and a permanent magnet 32 oppositely arranged with a spacing H2, the induction coil 31 is electrically connected with the control panel module 2 to form a closed circuit capable of controlling the operation of the control panel module 2, the permanent magnet 32 is detachably fixedly connected with the fan blade member 11, when the fan head 1 is in the operating state, the fan blade member 11 is driven by the rotating device 12 to rotate axially around the output shaft 121 of the rotating device 12, the permanent magnet 32 is synchronously rotated by the fan blade member 11, that is, the rotation axis L2 of the permanent magnet 32 is consistent with the rotation axis L2 of the fan blade member 11, and the permanent magnet 32 is rotated relative to the induction coil 31, the electromagnetic induction between the permanent magnet 32 and the induction coil 31 generates an electric current in the induction coil 31, thereby providing power for the control panel module 2. The passive power generation device 3 in the embodiment converts the mechanical energy of the rotation of the fan blade member 11 into electrical energy for the operation of the control panel module 2 through electromagnetic induction, so as to realize self-power supply of the control panel module 2, the structure is simple, the passive power generation device 3 has a small volume, is suitable for electric fan use, and the electromagnetic induction device can maintain high-efficiency energy conversion at different rotation speeds of the fan blade member 11, can stably operate the control panel module 2, and optimizes user experience.

[0034] Optionally, the fan head 1 further comprises a fan cover 13, the output shaft 121 of the rotating device 12 extends into the fan cover 13 from one side of the fan cover 13, the fan blade member 11 is arranged in the fan cover 13 and is fixedly connected with the output shaft 121 of the rotating device 12, and the control panel module 2 is arranged in the fan cover 13 away from the rotating device 12, for example, the control panel module 2 and the rotating device 12 are arranged on the front and rear sides of the fan cover 13 respectively, preferably, the control panel module 2 is arranged at a middle position on the front side of the fan cover 13, so as to facilitate people to operate the control panel module 2.

[0035] Embodiment 3:

[0036] Embodiment 3 is based on embodiment 2 and has the following implementation manner, for example, Figure 4As shown, the induction coil 31 comprises a first connecting section 311 and a second connecting section 312 for connecting the control panel module 2, and a coil section 313 arranged between the first connecting section 311 and the second connecting section 312. Preferably, the induction coil 31 is formed by bending a metal conductor to form the first connecting section 311, the second connecting section 312 and the coil section 313, so as to enhance the structural strength of the induction coil 31. The coil section 313 is wound around an axis to form a plurality of hierarchical coils arranged at equal intervals H2, so that the coil section 313 forms a spiral structure, thereby increasing the contact area of the induction coil 31 with the magnetic field in the permanent magnet 32, increasing the inductance and current carrying capacity in the induction coil 31, improving the efficiency of electromagnetic induction, and enabling the induction coil 31 to more efficiently capture and convert magnetic field energy into electrical energy. In addition, the spiral coil has good heat dissipation performance, which helps to reduce the temperature of the induction coil 31 during electromagnetic induction, reduces heat loss and energy waste, and thus improves the efficiency and stability of the passive power generation device 3.

[0037] Further, the outer diameter of the coil section 313 gradually increases from the direction close to the permanent magnet 32 to the direction away from the permanent magnet 32 along the axis, i.e., the outer diameter of each hierarchical coil gradually increases from the direction close to the permanent magnet 32 to the direction away from the permanent magnet 32 along the axis. The induction coil 31 is preferably a tapered coil. Compared with a traditional cylindrical coil, the induction coil 31 in the present embodiment further increases the contact area with the magnetic field, thereby improving the efficiency of electromagnetic induction power generation, making the power generation of the passive power generation device 3 more efficient and stable, and thus ensuring the stable operation of the control panel module 2.

[0038] Optionally, the hierarchical coils comprise at least a first-end hierarchical coil 3131a away from the control panel module 2 and a last-end hierarchical coil 3131b close to the control panel module 2. The first connecting section 311 is connected to the first-end hierarchical coil 3131a, and extends along a radial direction to one side and is electrically connected to the control panel module 2. The second connecting section 312 is connected to the last-end hierarchical coil 3131b, and extends along a radial direction to one side and is electrically connected to the control panel module 2. Further optionally, the extension directions of the first connecting section 311 and the second connecting section 312 can be on the same side or on different sides.

[0039] Embodiment 4:

[0040] Embodiment 4 is based on Embodiment 2 and / or Embodiment 3, and has the following implementation manner, for example, Figure 6As shown in Figure 8, the induction coil 31 has an axial coil axis L1, which is the central axis of the coil segment 313. The coil axis L1 is located on one side of the rotation axis L2 of the permanent magnet 32. In this embodiment, the permanent magnet 32 ​​is located on one side of the output shaft 121 of the rotating device 12. The permanent magnet 32 ​​rotates relative to the induction coil 31 around the output shaft 121 of the rotating device 12 via the fan blade component 11. The rotation axis L2 of the permanent magnet 32 ​​is the axis of the output shaft 121 of the rotating device 12. Figure 7 As shown, the installation position of the induction coil 31 corresponds to the position of the permanent magnet 32 ​​and is located on one side of the output shaft 121 of the rotating device 12. The permanent magnet 32 ​​and the induction coil 31 are positioned relative to each other at a distance H2, which helps to concentrate the magnetic field of the permanent magnet 32 ​​near the induction coil 31. When the permanent magnet 32 ​​rotates axially relative to the induction coil 31 around the output shaft 121 of the rotating device 12, the permanent magnet 32 ​​and its magnetic field move closer to and further away from the induction coil 31, which helps to make the magnetic flux in the induction coil 31 change more, thereby increasing the induced electromotive force and improving the power generation effect of the passive power generation device 3.

[0041] Optionally, in the vertical direction, a certain distance H2 is maintained between the permanent magnet 32 ​​and the induction coil 31 to reduce eddy current losses, reduce electromagnetic interference, and avoid magnetic leakage. Furthermore, as the fan blade component 11 drives the permanent magnet 32 ​​to rotate, it enhances airflow between the permanent magnet 32 ​​and the induction coil 31, thereby improving heat dissipation and protecting the passive power generation device 3. Optionally, the distance H2 is 0–11 mm, and the distance H2 is greater than 0. To consider the relationship between electromagnetic power generation and fan volume, the distance H2 can be set to be greater than or equal to 1 mm, 2 mm, 5 mm, 8 mm, etc. Optionally, the distance H2 is: 2 mm ≤ H2 ≤ 8 mm.

[0042] Example 5:

[0043] Example 5, based on one or more of Examples 2-4, has the following implementation method, such as... Figure 5As shown, along the axial direction of the induction coil 31, the projection area of the permanent magnet 32 is less than or equal to the projection area of the induction coil 31, so that the magnetic field generated by the permanent magnet 32 can sufficiently cover the induction coil 31, reduce magnetic field leakage, thereby optimizing the distribution of magnetic flux and improving the power generation efficiency of the passive power generation device 3; optionally, the projection area of the permanent magnet 32 is 1 / 4-1 of the projection area of the induction coil 31; further optionally, the projection area of the permanent magnet 32 is 1 / 4, 1 / 3, 1 / 2 or 1 of the projection area of the induction coil 31; it should be noted that in the embodiment, the axial direction of the induction coil 31 is the axial direction of the coil segment 313.

[0044] In other optional embodiments, the projection area of the permanent magnet 32 is 1 / 3-1 of the projection area of the induction coil 31.

[0045] Embodiment 6:

[0046] Embodiment 6 is based on one or more of Embodiments 2-5, and has the following implementation manner, as shown in Figure 2 、 3 , 6, the fan member 11 includes a fan sleeve 111, a plurality of blades 112 arranged at intervals H2 along the outer circumferential side of the fan sleeve 111, and the permanent magnet 32 is fixedly installed in the fan sleeve 111 and faces the induction coil 31; in this embodiment, the output shaft 121 of the rotating device 12 is fixedly arranged in the fan sleeve 111 from the side away from the control panel module 2, and the rotating device 12 drives the fan member 11 to rotate axially around the output shaft 121, thereby realizing the operation state of the blade 112 rotating to blow air; optionally, the rotating device 12 can use a common driving device for rotating the blade 112 of an electric fan.

[0047] Optionally, the permanent magnet 32 is arranged on one side of the output shaft 121 of the rotating device 12, and the installation position of the induction coil 31 corresponds to the permanent magnet 32 and is located on one side of the output shaft 121 of the rotating device 12; during assembly, the permanent magnet 32 can be installed on the circumferential side of the output shaft 121 of the rotating device 12, which is beneficial to reduce the thickness of the permanent magnet 32 and the fan sleeve 111 after assembly, so that the internal structure of the fan head 1 is more compact, thereby reducing the volume of the fan head 1.

[0048] Embodiment 7:

[0049] Embodiment 7 is based on Embodiment 6, and has the following implementation manner, as shown in Figure 7As shown, the fan sleeve 111 is provided with a first installation cavity 1111 open to the induction coil 31, at least part of the permanent magnet 32 is arranged in the first installation cavity 1111, and the permanent magnet 32 is located on the side of the output shaft 121 of the rotating device 12. When the fan is in operation, the permanent magnet 32 is driven to rotate around the output shaft 121 of the rotating device 12 by the fan sleeve 111.

[0050] Optionally, in some embodiments, the permanent magnet 32 can be directly installed in the first installation cavity 1111.

[0051] Optionally, in some embodiments, the permanent magnet 32 can be directly installed in the first installation cavity 1111. Figure 7 As shown, the permanent magnet 32 is fixedly connected with the fan sleeve 111 through a mounting bracket 33 to enhance the installation stability of the permanent magnet 32. The mounting bracket 33 is provided with a second installation cavity 331 facing the first installation cavity 1111 and a connecting portion 332 connected with the rotating device 12. The permanent magnet 32 is installed in the second installation cavity 331 in interference fit, and the permanent magnet 32 is clamped by the inner wall of the second installation cavity 331. Further optionally, the second installation cavity 331 is a cuboid cavity, i.e., the permanent magnet 32 is a cuboid structure. Compared with the traditional columnar permanent magnet 32, the projection area of the permanent magnet 32 can be increased, and as shown, Figure 7 As shown, the length of the permanent magnet 32 in the longitudinal direction is less than the length of the permanent magnet 32 in the transverse direction, which is beneficial to increase the cutting amount of the induction coil 31 to the magnetic field of the permanent magnet 32, thereby improving the power generation efficiency of the passive power generation device 3. The connecting portion 332 is arranged at the middle position of the mounting bracket 33 facing the fan sleeve 111, and the connecting portion 332 extends from the mounting bracket 33 towards the rotating device 12. The output shaft 121 of the rotating device 12 is arranged in the fan sleeve 111 along the axial direction from the rear side of the fan sleeve 111, and at least part of the output shaft 121 of the rotating device 12 can extend into the first installation cavity 1111. The permanent magnet 32 is arranged in the second installation cavity 331, and the connecting portion 332 is arranged on the side of the second installation cavity 331.

[0052] Optionally, the first mounting cavity 1111 is provided with a first abutting portion 1112 that contacts the mounting bracket 33. The mounting bracket 33 has a second abutting portion 333 extending outward from the outer periphery of the mounting bracket 33 on the side facing the rotating device 12. When the mounting bracket 33 is connected to the rotating device 12 through the connecting portion 332, the second abutting portion 333 abuts against the first abutting portion 1112, and the second mounting cavity 331 is opposite to the inner wall of the first mounting cavity 1111, so as to enhance the connection stability of the mounting bracket 33, thereby enhancing the connection stability of the permanent magnet 32 ​​and preventing the mounting bracket 33 and the permanent magnet 32 ​​from loosening during rotation. Optionally even further, the first abutting portion 1112 and the second abutting portion 333 can be bonded together to further fix the mounting bracket 33.

[0053] Optionally, the inner wall of the second mounting cavity 331 extends axially toward the side closer to the connecting portion 332 to increase the mounting depth of the second mounting cavity 331, thereby improving the mounting stability of the permanent magnet 32 ​​and preventing the permanent magnet 32 ​​from detaching from the second mounting cavity 331 during rotation.

[0054] Optionally, in other embodiments, a plurality of second mounting cavities 331 may be provided, and each second mounting cavity 331 is evenly distributed around the circumference of the connecting portion 332 to further enhance the magnetic field strength and improve the power generation efficiency of the passive power generation device 3.

[0055] Example 8:

[0056] Example 8, based on one or more of Examples 2-7, has the following implementation method, such as... Figure 2 As shown, the control panel module 2 includes a circuit board 21, an operating unit 22 electrically connected to the circuit board 21, and at least one battery 23. The induction coil 31 is electrically connected to the circuit board 21 and is located on the side of the circuit board 21 facing the permanent magnet 32. The operating unit 22 and the battery 23 are located on the side of the circuit board 21 away from the permanent magnet 32. The operating unit 22 can be configured as a button unit for user operation and adjustment of fan functions such as on / off and speed. The battery 23 can be charged. When the induction coil 31 generates current through electromagnetic induction and supplies power to the control panel module 2, it can charge the battery 23. The battery 23 can temporarily store the current generated in the passive power generation device 3 to ensure the battery life and use of the control panel module 2.

[0057] Furthermore, such as Figure 7 and Figure 8As shown, a gap H1 is formed between the induction coil 31 and the circuit board 21, that is, there is a gap H1 of at least 1 mm between the end-level coil 3131b and the circuit board 21, so as to avoid the coil segment 313 of the induction coil 31 directly contacting the circuit board 21 to cause short circuit or open circuit, and to ensure normal use of the control panel module 2. Moreover, the gap H1 between the induction coil 31 and the circuit board 21 is beneficial to heat dissipation of the induction coil 31.

[0058] Embodiment 9:

[0059] Embodiment 9 is based on Embodiment 8 and has the following implementation, as shown in Figure 1 and Figure 2 As shown, the control panel module 2 is detachably connected by being clamped and fixed on the front side of the fan cover 13 through the mounting shell 24. Further, the induction coil 31 is electrically connected with the control panel module 2, and the induction coil 31 is also arranged in the mounting shell 24. The mounting shell 24 is preferably an insulating shell, and the induction coil 31 is separated from the external environment by the insulating shell, so as to protect the induction coil 31 and ensure normal operation of the passive power generation device 3.

[0060] Optionally, as shown in Figure 7As shown, the mounting shell 24 comprises a detachably connected top cover 241 and a bottom shell 242, the bottom shell 242 is provided with a first accommodating cavity 2421 open to one side, the first accommodating cavity 2421 is used for mounting the control panel module 2 and the induction coil 31, the sidewall of the bottom shell 242 is provided with a first clamping part 2422, the top cover 241 is provided with a second accommodating cavity 2411 open to one side, the sidewall of the top cover 241 is connected with a second clamping part 2412 corresponding to the first clamping part 2422, optionally, the clamping structure between the bottom shell 242 and the top cover 241 can adopt a protrusion and groove interference fit connection structure, further preferably, a rubber ring 243 is arranged between the first clamping part 2422 and the second clamping part 2412, so as to further enhance the connection stability between the top cover 241 and the bottom shell 242; the top cover 241 and the bottom shell 242 are detachably connected through the clamping of the second clamping part 2412 and the first clamping part 2422, and the control panel module 2 and the induction coil 31 are fixedly installed in the first accommodating cavity 2421 and the second accommodating cavity 2411, so that the control panel module 2 forms an independent module through the mounting shell 24, and the independent module is detachably connected with the fan cover 13 to facilitate the quick assembly and maintenance of the control panel module 2. Further, in some embodiments, a spacing H2 is arranged between the permanent magnet 32 and the induction coil 31, the spacing H2 has a spacing of 0-11 mm, and the spacing space can satisfy the assembly of the bottom shell 242 and a mounting bracket 33 for mounting the permanent magnet 32, such as Figure 7 As shown, in order to guarantee the electromagnetic induction efficiency between the permanent magnet 32 and the induction coil 31, the thickness H3 of the bottom shell 242 is about 2 mm, and the thickness H4 of the side of the mounting bracket 33 facing the induction coil 31 is about 1-2 mm, so as to reduce the magnetic flux leakage while protecting the permanent magnet 32 and the induction coil 31; in addition, the spacing between the permanent magnet 32 and the induction coil 31 can also be 5-8 mm by subtracting the thickness H3 of the bottom shell 242 and the thickness H4 of the mounting bracket 33 from the spacing H2.

[0061] Optionally, the bottom wall of the bottom shell 242 is provided with a plurality of assembly columns extending towards the top cover 241, the circuit board 21 is provided with assembly holes corresponding to the assembly columns, and the control panel module can be installed on the assembly columns through threaded connection, so that the control panel module can be quickly disassembled and assembled.

[0062] The above only further illustrates the technical content of the utility model with examples, so that the reader can more easily understand, but does not represent that the embodiment of the utility model is limited to this, and any technical extension or re-creation made according to the utility model is protected by the utility model. The protection scope of the utility model is subject to the patent claim.

Claims

1. A fan having a self-powered control panel, characterized by, It includes a fan head (1), a control panel module (2) connected to the fan head (1), and a passive power generation device (3) disposed between the fan head (1) and the control panel module (2). The passive power generation device (3) is electrically connected to the control panel module (2) and supplies power to the control panel module (2) through the passive power generation device (3).

2. The fan with a self-powered control panel as described in claim 1, characterized in that, The fan head (1) includes an axially rotatable fan blade component (11) and a rotating device (12) connected to the fan blade component (11). The passive power generation device (3) includes an induction coil (31) and a permanent magnet (32) arranged at intervals opposite to each other. The induction coil (31) is electrically connected to the control panel module, and the permanent magnet (32) is connected to the fan blade component (11). The rotating device (12) drives the fan blade component (11) to rotate axially, thereby causing the permanent magnet (32) to rotate relative to the induction coil (31) to trigger the induction coil (31) to supply power to the control panel module (2).

3. The fan with a self-powered control panel as described in claim 2, characterized in that, The induction coil (31) includes a first connecting section (311) and a second connecting section (312) for connecting the control panel module (2), and a coil section (313) disposed between the first connecting section (311) and the second connecting section (312). The coil section (313) is wound around the axial direction to form a plurality of spaced-apart layered coils. The outer diameter of the coil section (313) gradually increases along the axial direction from the direction close to the permanent magnet (32) to the direction away from the permanent magnet (32).

4. The fan with a self-powered control panel as described in claim 2, characterized in that, The induction coil (31) has a coil axis, which is located on one side of the rotation axis of the permanent magnet (32).

5. The fan with a self-powered control panel as described in claim 2, characterized in that, Along the axial direction of the induction coil (31), the projected area of ​​the permanent magnet (32) is less than or equal to the projected area of ​​the induction coil (31).

6. The fan with a self-powered control panel as described in claim 2, characterized in that, The fan blade component (11) includes a fan blade sleeve (111) and a plurality of blades (112) spaced apart along the outer periphery of the fan blade sleeve (111). The permanent magnet (32) is fixedly installed in the fan blade sleeve (111) and faces the induction coil (31).

7. The fan with a self-powered control panel as described in claim 6, characterized in that, The fan blade sleeve (111) has a first mounting cavity (1111) open toward the induction coil (31), and at least part of the permanent magnet (32) is disposed in the first mounting cavity (1111).

8. The fan with a self-powered control panel as described in claim 7, characterized in that, The permanent magnet (32) is fixedly connected to the fan blade sleeve (111) via a mounting bracket (33). The mounting bracket (33) is provided with a second mounting cavity (331) facing the first mounting cavity (1111) and a connecting part (332) connected to the rotating device (12). The permanent magnet (32) is located in the second mounting cavity (331), and the connecting part (332) is located on one side of the second mounting cavity (331).

9. The fan with a self-powered control panel as described in claim 2, characterized in that, The control panel module (2) includes a circuit board (21), an operating unit (22) electrically connected to the circuit board (21), and at least one battery (23). The induction coil (31) is electrically connected to the circuit board (21), and the induction coil (31) is located on the side of the circuit board (21) facing the permanent magnet (32). The operating unit (22) and the battery (23) are located on the side of the circuit board (21) away from the permanent magnet (32).

10. The fan with a self-powered control panel as described in claim 9, characterized in that, A gap is formed between the induction coil (31) and the circuit board (21).

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