Fan

Abstract

The fan comprises a rear mesh enclosure, a first air outlet net, a second air outlet net and an air blowing assembly, the rear mesh enclosure comprises a mesh enclosure body, an installation opening is formed in one side of the mesh enclosure body, the first air outlet net comprises an annular support, a center connecting piece and a plurality of spokes, the annular support is installed in the installation opening, and the center connecting piece is connected with the spokes. One ends of the spokes are connected with the inner side of the annular support, the other ends of the spokes are connected with the center connecting piece, and the spokes are arranged in the circumferential direction of the center connecting piece at intervals. A mounting groove is formed in the side, away from the rear net cover, of the annular support, the second air outlet net is mounted in the mounting groove, and a via hole is formed in the second air outlet net and corresponds to the center connecting piece; an air cavity is defined by the rear net cover, the first air outlet net and the second air outlet net, the air blowing assembly comprises fan blades and a driving part which are arranged in the air cavity, and the driving part is installed on the net cover body and used for driving the fan blades to rotate; the structural strength of the fan is improved, and the flowing effect of air is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, especially to a fan. BACKGROUND

[0002] A fan is an electrical appliance for generating flowing air, which mainly converts electrical energy into mechanical energy through rotating fan blades to push air flow, achieving the purposes of cooling, ventilation and heat dissipation.

[0003] Currently, the housings of fans on the market mostly adopt a combination form of a front mesh cover and a rear mesh cover. However, when the size or weight of a fan is slightly large, the structure of this combination form may have a problem of insufficient strength, which is prone to breakage in drop tests or in actual use.

[0004] In order to enhance the structural strength, some existing fans increase a support between the front mesh cover and the rear mesh cover during design. However, the increase of the support structure brings new problems. The existence of the support will interfere with the airflow blown by the fan, causing the airflow to be folded or dispersed, thereby significantly affecting the air outlet effect of the fan. This design solves the problem of insufficient structural strength, but sacrifices the core function of the fan, i.e., effectively generating flowing air. SUMMARY

[0005] The main purpose of the utility model is to provide a fan, which aims to solve the problems of insufficient structural strength of existing fans or the influence of the air outlet effect caused by the increase of a support.

[0006] To achieve the above-mentioned purpose, the fan provided by the utility model comprises:

[0007] a rear mesh cover, which comprises a mesh cover main body, one side of the mesh cover main body forming a mounting port;

[0008] a first air outlet mesh, which comprises a ring-shaped support, a center connecting piece and a plurality of spokes, the ring-shaped support being mounted in the mounting port, one end of the spoke being connected to the inner side of the ring-shaped support, the other end of the spoke being connected to the center connecting piece, and the plurality of spokes being arranged along the circumference of the center connecting piece;

[0009] a second air outlet mesh, one side of the ring-shaped support away from the rear mesh cover forming a mounting groove, the second air outlet mesh being mounted in the mounting groove, the second air outlet mesh being provided with a through hole corresponding to the center connecting piece;

[0010] a blowing assembly, the rear mesh cover, the first air outlet mesh and the second air outlet mesh enclosing a wind cavity, the blowing assembly comprising fan blades and a driving piece arranged in the wind cavity, the driving piece being mounted on the mesh cover main body, and the driving piece being used to drive the fan blades to rotate.

[0011] Optionally, the spoke is arc-shaped, the spoke forms an arc surface towards one side of the fan blade, the spoke forms a first connecting surface and a second connecting surface away from one side of the fan blade, the second connecting surface is connected to the arc surface and forms a wind cutting angle with the arc surface, and the wind cutting angle is arranged towards the fan blade.

[0012] Optionally, the central connecting member is formed with a receiving groove, and the fan further comprises a functional module arranged in the receiving groove.

[0013] Optionally, one side of one of the plurality of spokes is provided with a wiring groove, and a groove wall of the receiving groove is in communication with the wiring groove.

[0014] Optionally, the mounting opening is provided with a plurality of protrusions, the plurality of protrusions are arranged at intervals along the circumference of the mounting opening, a clamping groove is formed between any two adjacent protrusions, the inner side of the annular support is formed with a plurality of clamping blocks, the number of the clamping blocks is consistent with the number of the clamping grooves, and the clamping blocks extend into the clamping grooves one by one.

[0015] The bottom wall of the limiting groove is further provided with a protrusion, the positioning block is further provided with a recess, and after the positioning block extends into the limiting groove, the protrusion extends into the recess.

[0016] Optionally, the outer side of the protrusion is recessed inward to form a groove, a protrusion is arranged between any two adjacent clamping blocks, the number of the protrusions is consistent with the number of the protrusions, and the protrusions are clamped into the grooves one by one.

[0017] Optionally, a plurality of positioning blocks are arranged at intervals along the circumference of the groove wall of the mounting groove, a plurality of positioning grooves are formed along the circumference of the side of the second air outlet net towards the rear net cover, a limiting block is arranged at the groove opening of the positioning groove, the limiting block and the positioning groove form a one-side-opened limiting groove, the positioning block is used for entering the positioning groove from the groove opening of the positioning groove, the positioning block extends into the limiting groove from the opening after the second air outlet net is rotated, and the limiting block limits the positioning block.

[0018] The bottom wall of the limiting groove is further provided with a protrusion, the positioning block is further provided with a recess, and after the positioning block extends into the limiting groove, the protrusion extends into the recess.

[0019] Optionally, the rear net cover further comprises a battery, a circuit board and a rear cover, the side of the net cover body away from the first air outlet net is provided with a circuit board compartment, the battery and the circuit board are installed in the circuit board compartment and electrically connected with the driving member, and the rear cover covers the circuit board compartment.

[0020] Optionally, the fan further includes a button assembly that passes through the rear cover and extends into the circuit board compartment, the button assembly including multiple buttons.

[0021] Optionally, the fan further includes an arc-shaped bracket, and the rear grille further includes two mounting ears, which are respectively disposed on both sides of the grille body and are rotatably mounted on both ends of the arc-shaped bracket.

[0022] In this invention, the fan includes a rear grille, a first air outlet grille, a second air outlet grille, and a blowing assembly. The first air outlet grille includes an annular support, a central connector, and multiple spokes. The second air outlet grille is installed in a mounting groove within the annular support. The rear grille, the first air outlet grille, and the second air outlet grille form a wind cavity, and the blowing assembly is disposed within the wind cavity. The fan accommodates the first air outlet grille by forming a mounting opening. The annular support, central connector, and multiple spokes of the first air outlet grille work together, with the annular support providing support and the spokes connecting the annular support and the central connector, increasing the overall structural strength. The second air outlet grille is connected to the annular support via the mounting groove, further increasing the overall structural strength. A through-hole corresponds to the central connector, allowing the central connector to extend into the through-hole, increasing the connection strength between the first and second air outlet grilles. This also allows the second air outlet grille to be located within the annular support of the first air outlet grille, reducing the overall thickness of the fan. The blowing assembly consists of fan blades and a drive unit, installed within the wind cavity. The drive unit rotates the fan blades, propelling airflow. By combining these technical features, the problem of insufficient structural strength of the fan is solved, while ensuring the effectiveness of the airflow. Attached Figure Description

[0023] 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 the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of a fan embodiment provided by this utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the exploded structure of a fan;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the first air outlet screen at one angle;

[0027] Figure 4 for Figure 2Structure schematic view of another angle of the first air outlet net in the middle;

[0028] Figure 5 As Figure 2 Structure schematic view of the second air outlet net in the middle;

[0029] Figure 6 Another explosion structure schematic view of the fan is provided in the utility model.

[0030] Explanation of reference numerals:

[0031] 100, fan;1, first air outlet net;11, annular support;12, center connecting piece;13, spoke;111, mounting groove;112, clamping block;131, first connecting surface;132, second connecting surface;133, arc surface;134, wiring groove;2, second air outlet net;21, via hole;3, rear net cover;31, net cover main body;311, mounting port;3111, protruding portion;3112, clamping groove;3113, recess;1121, protruding block;1111, positioning block;22, positioning groove;221, limiting block;222, limiting groove;2221, opening;223, raised portion;224, recessed portion;32, battery;33, circuit board;34, rear cover;312, circuit board compartment;7, button assembly;71, key;8, arc-shaped support;35, mounting lug;4, blowing assembly;41, fan blade;42, driving piece;5, air cavity;6, function module.

[0032] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0035] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes include "A and / or B" as an example, including A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0036] The fan is an electrical device for generating flowing air, which mainly functions to convert electrical energy into mechanical energy through rotating fan blades, thereby pushing air flow to achieve the purposes of cooling, ventilation, heat dissipation, etc. At present, the shells of fans on the market mostly adopt the combination form of front net cover and rear net cover. However, when the size or weight of the fan is slightly large, the structure of this combination form may have the problem of insufficient strength, and is easy to break in drop test or in actual use. In order to enhance the structural strength, some existing fans will increase a support between the front net cover and the rear net cover when designed, although the setting of the support improves the overall structural strength of the fan and reduces the possibility of breaking in drop test, but the setting of the support will cause the blown wind to be folded, thereby affecting the air outlet effect.

[0037] Please refer to Figures 1 to 5The utility model provides a fan 100, fan 100 includes rear net cover 3, first air outlet net 1, second air outlet net 2 and blow assembly 4 rear net cover 3 includes net cover main part 31, the one side of net cover main part 31 forms the installation mouth 311, first air outlet net 1 includes annular support 11, center connecting piece 12 and a plurality of spokes 13, annular support 11 is installed in installation mouth 311, one end of spoke 13 connects the inside of annular support 11, the other end of spoke 13 connects center connecting piece 12, a plurality of spokes 13 are along the circumferential interval of center connecting piece 12 and set, the one side of annular support 11 away from rear net cover 3 forms installation groove 111, second air outlet net 2 is installed in installation groove 111, second air outlet net 2 is set with via hole 21, via hole 21 corresponds center connecting piece 12 and sets up, rear net cover 3, first air outlet net 1 and second air outlet net 2 enclose air chamber 5, blow assembly 4 includes the fan blade 41 and driving part 42 of setting in air chamber 5, driving part 42 is installed in net cover main part 31, the output shaft of driving part 42 connects fan blade 41 and is used to drive fan blade 41 rotation.

[0038] The utility model discloses a technical scheme, fan 100 is accommodated first air outlet net 1 through forming installation mouth 311, and the annular support 11 of first air outlet net 1, center connecting piece 12 and a plurality of spokes 13 jointly act, and the annular support 11 provides support, and spoke 13 connects annular support 11 and center connecting piece 12, and the overall structural strength is increased. Second air outlet net 2 is connected with annular support 11 through installation groove 111 and further increases the overall structural strength. Via hole 21 is set up with center connecting piece 12 correspondingly, so that center connecting piece 12 can extend into via hole 21, can increase the connecting strength of first air outlet net 1 and second air outlet net 2, and second air outlet net 2 can be located in the annular support 11 of first air outlet net 1 simultaneously, reduces the overall thickness of fan 100. Blow assembly 4 is composed of fan blade 41 and driving part 42, is installed in air chamber 5, and driving part 42 can include motor and magnetic ring, and the magnetic ring is motor rotor, and motor drives magnetic ring to drive fan rotation, and promotes air flow. Through the mutual cooperation of these technical features, the problem of insufficient structural strength of fan 100 is solved, and the air flow effect is ensured.

[0039] In order to enhance the overall structural strength of the fan 100, the utility model provides a new design scheme. Specifically, one side of the rear mesh cover 3 forms a mounting port 311, and the annular support 11 of the first air outlet mesh 1 is mounted in the mounting port 311. One end of the plurality of spokes 13 is connected to the inner side of the annular support 11, and the other end is connected to the center connecting piece 12, and the spokes 13 are arranged along the circumference of the center connecting piece 12. Thus, the annular support 11, the spokes 13 and the center connecting piece 12 jointly act to provide a firm support structure. The second air outlet mesh 2 is mounted in the mounting groove 111 on the side of the annular support 11 away from the rear mesh cover 3, and a through hole 21 is formed therein, and the through hole 21 is arranged corresponding to the center connecting piece 12. The blowing assembly 4 includes the fan blade 41 arranged in the air cavity 5 and the driving member 42 mounted on the mesh cover main body 31. In this design, the rear mesh cover 3 accommodates the first air outlet mesh 1 by forming the mounting port 311, and the annular support 11, the center connecting piece 12 and the plurality of spokes 13 of the first air outlet mesh 1 jointly act, the annular support 11 provides support, the spokes 13 connect the annular support 11 and the center connecting piece 12, and the overall structural strength is increased. The second air outlet mesh 2 is further connected to the annular support 11 through the mounting groove 111 to increase the overall structural strength. The through hole 21 is arranged corresponding to the center connecting piece 12, so that the center connecting piece 12 can extend into the through hole 21, the connection strength of the first air outlet mesh 1 and the second air outlet mesh 2 can be increased, and at the same time, the second air outlet mesh 2 can be located in the annular support 11 of the first air outlet mesh 1, thereby reducing the overall thickness of the fan 100. The blowing assembly 4 is composed of the fan blade 41 and the driving member 42, and is installed in the air cavity 5. Through the mutual cooperation of these technical features, the problem of insufficient structural strength of the fan 100 is solved, and the flow effect of the wind is ensured at the same time.

[0040] Through this design, the structural strength of the fan 100 is significantly improved, and the problem of easy breakage of the traditional fan 100 in the drop test is avoided. At the same time, through reasonable structural design, the flow effect of the wind is ensured, and the problem of wind folding caused by the increase of the support is avoided. Specifically, one side of the rear mesh cover 3 forms a mounting port 311, and the annular support 11 of the first air outlet mesh 1 is mounted in the mounting port 311. One end of the plurality of spokes 13 is connected to the inner side of the annular support 11, and the other end is connected to the center connecting piece 12, and the spokes 13 are arranged along the circumference of the center connecting piece 12. Thus, the annular support 11, the spokes 13 and the center connecting piece 12 jointly act to provide a firm support structure. The second air outlet mesh 2 is mounted in the mounting groove 111 on the side of the annular support 11 away from the rear mesh cover 3, and a through hole 21 is formed therein, and the through hole 21 is arranged corresponding to the center connecting piece 12. The blowing assembly 4 includes the fan blade 41 arranged in the air cavity 5 and the driving member 42 mounted on the mesh cover main body 31. Through the mutual cooperation of these technical features, the problem of insufficient structural strength of the fan 100 is solved, and the flow effect of the wind is ensured at the same time.

[0041] In an embodiment, the spokes 13 are arc-shaped, and the side of the spokes 13 facing the fan blade 41 forms an arc surface 133, and the side of the spokes 13 away from the fan blade 41 forms a first connecting surface 131 and a second connecting surface 132 connected to each other, the second connecting surface 132 is connected to the arc surface 133 and forms a wind cutting angle with the arc surface 133, and the wind cutting angle is arranged towards the fan blade. The first connecting surface 131 and the second connecting surface 132 are connected to each other, and the area of the first connecting surface 131 plus the area of the second connecting surface 132 is smaller than the area of the arc surface 133. In this embodiment, the spokes 13 are arc-shaped, and the side of the spokes 13 facing the fan blade 41 forms an arc surface 133, which helps to guide the airflow and improve the air outlet effect. The side of the spokes 13 away from the fan blade 41 forms a first connecting surface 131 and a second connecting surface 132, which are respectively connected to the two sides of the arc surface 133 and connected to each other, thereby enhancing the overall strength and stability of the spokes 13. The second connecting surface 132 is connected to the arc surface 133 and forms a wind cutting angle with the arc surface 133, and the wind cutting angle is arranged towards the fan blade, so that the airflow can smoothly pass through the first air outlet net 1. Compared with the way of increasing the strength of the fan by adding a support, the way of arranging the spokes 13 does not hinder the circulation of the airflow. The first connecting surface 131 and the second connecting surface 132 of the spokes 13 form a horn-like effect, so that the side of the spokes 13 close to the fan blade 41 is thin and does not hinder the flow of air, and the side of the spokes 13 away from the fan blade 41 is thick and can guide the flow of air, while increasing the structural strength, thereby improving the overall structural strength and stability of the fan 100.

[0042] The arc-shaped design of the spokes 13 can be achieved in various ways, for example, different combinations of materials can be used to achieve the arc-shaped structure, or the thickness and width of the spokes 13 can be optimized to achieve the required arc shape and connecting surfaces. In addition, the curvature of the spokes 13 and the curvature of the arc surface 133 can be adjusted to further optimize the airflow guiding effect and structural strength.

[0043] The arc-shaped design of the spokes 13 and the optimization of the connecting surfaces thereof in the present application greatly enhance the structural strength and stability of the fan 100 while improving the air outlet effect. Compared with the prior art, the design of the present application not only shows higher anti-breaking ability in the drop test, but also has better durability in actual use, effectively solving the deficiencies of the existing fan 100 in structural strength and stability.

[0044] In an embodiment, the center connecting piece 12 is formed with a receiving groove, and the fan 100 further comprises a functional module 6 arranged in the receiving groove.

[0045] Further, the application also proposes that the center connector 12 is formed with a receiving groove, and the fan 100 further comprises a functional module 6 arranged in the receiving groove. The receiving groove formed by the center connector 12 provides a special space for installing the functional module 6. Through this design, additional functional modules 6 can be added without affecting the overall structure of the fan 100, thereby improving the multifunctionality of the fan 100. This design not only saves space, but also maintains the structural strength and stability of the fan 100, while facilitating the installation and maintenance of the functional module 6. The functional module 6 can be a display screen, which is arranged at the through hole 21 of the first air outlet net 1 and corresponds to the center connector 12, facilitating the user to observe the gear, wind speed, etc. of the fan 100. The functional module 6 can also be a LOGO decorative cover, a semiconductor refrigeration sheet, a sprayer, etc., which can be replaced according to actual needs. The receiving groove formed by the center connector 12 can be realized in various ways, for example, the receiving groove can be formed integrally by injection molding, or it can be formed by post-processing such as cutting, carving, etc. The shape and size of the receiving groove can be designed according to the specific needs of the functional module 6, for example, it can be designed into a circular, square or other geometric shape to adapt to different types of functional modules 6. In addition, the depth and width of the receiving groove can also be adjusted according to the size of the functional module 6 to ensure that the functional module 6 can be stably installed in the receiving groove.

[0046] The application adds a special space for installing various functional modules 6 in the fan 100 by forming a receiving groove on the center connector 12. Compared with the prior art, this design not only effectively utilizes the internal space of the fan 100, avoids affecting the overall structure of the fan 100, but also improves the multifunctionality and expandability of the fan 100. The diversity of the functional module 6 enables the fan 100 to be customized according to different user needs, providing more use scenarios and application possibilities. Therefore, the technical solution proposed by the application not only solves the problem of how to add a functional module 6 installation space in the fan 100, but also further improves the practicality and user experience of the fan 100.

[0047] In an embodiment, one of the plurality of spokes 13 is provided with a wire slot 134 on one side thereof, and the slot wall of the accommodating slot is in communication with the wire slot 134. The wire slot 134 can be arranged on the side of the spoke 13 facing the mesh body 31 or on the side of the spoke 13 away from the mesh body 31. By arranging the wire slot 134 on one spoke 13 and making the slot wall of the accommodating slot in communication with the wire slot 134, the internal wiring problem of the fan 100 is solved. This design allows the electric wire to be arranged along the wire slot 134, thereby avoiding the disorder of the electric wire inside the fan 100 and improving the overall structural neatness and safety of the fan 100. Specifically, the wire slot 134 can be arranged on the side close to the mesh body 31, so that the electric wire can be directly arranged from the inside of the mesh body 31 to other parts of the fan 100 through the wire slot 134, thereby simplifying the wiring process.

[0048] The newly added technical features are the wire slot 134 on the spoke 13 and the communication between the slot wall of the accommodating slot and the wire slot 134. The wire slot 134 can take various forms, for example, it can be a simple groove 3113 or a closed channel with a cover plate to better protect the electric wire. The slot wall of the accommodating slot can be in communication with the wire slot 134 by means of holes or grooves, so that the electric wire can smoothly enter the wire slot 134 from the accommodating slot.

[0049] Through the above technical solutions, the application not only solves the problem of internal wiring disorder of the fan 100, but also improves the overall structural neatness and safety of the fan 100. Compared with the prior art, the design of the application simplifies the wiring process, reduces the exposure and winding of the electric wire, and improves the service life and reliability of the fan 100.

[0050] In an embodiment, the mounting port 311 is provided with a plurality of protruding portions 3111, and the plurality of protruding portions 3111 are arranged at intervals along the circumference of the mounting port 311. A clamping groove 3112 is formed between any two adjacent protruding portions 3111. The inner side of the annular bracket 11 is formed with a plurality of clamping blocks 112, and the number of the clamping blocks 112 is consistent with and one-to-one corresponds to the number of the clamping grooves 3112. By arranging the plurality of protruding portions 3111 and the clamping grooves 3112 on the mounting port 311, and forming the plurality of clamping blocks 112 on the inner side of the annular bracket 11, the clamping blocks 112 one-to-one correspondingly extend into the clamping grooves 3112 formed by the protruding portions 3111. This design increases the stability of the connection between the first air outlet mesh 1 and the rear mesh body 3. The design of the protruding portions 3111 and the clamping blocks 112 not only improves the structural strength of the fan 100, but also ensures the stability of the fan 100 during use, avoiding the problem of rupture or damage due to insufficient structural strength.

[0051] The rear net cover 3 of the fan 100 is provided with a plurality of protrusions 3111 and clamping grooves 3112 at the mounting opening 311, and the inner side of the annular support 11 is formed with a plurality of clamping blocks 112 which are correspondingly inserted into the clamping grooves 3112. Specifically, the protrusions 3111 and the clamping blocks 112 can have various implementation manners. For example, the protrusions 3111 can be designed with different heights and shapes to adapt to different installation requirements. The clamping blocks 112 can also be designed with different sizes and shapes as needed to ensure a tight fit with the clamping grooves 3112. In addition, the materials of the protrusions 3111 and the clamping blocks 112 can be selected as metal or high-strength plastic to further improve the structural strength and durability.

[0052] The present application significantly improves the structural strength and installation stability of the fan 100 by providing a plurality of protrusions 3111 and clamping grooves 3112, and making the clamping blocks 112 of the annular support 11 correspondingly inserted into the clamping grooves 3112. Compared with the prior art, this design not only enhances the overall stability of the fan 100, but also effectively avoids the problem of cracking or damage due to insufficient structural strength, thereby prolonging the service life of the fan 100.

[0053] Based on the above embodiment, the outer side of the protrusion 3111 is recessed inward to form a groove 3113, and a protrusion 1121 is provided between any two adjacent clamping blocks 112, the number of the protrusion 1121 is consistent with the number of the protrusion 3111 and is correspondingly clamped into the groove 3113. By forming a groove 3113 on the outer side of the protrusion 3111 and providing a protrusion 1121 between the clamping blocks 112, the protrusion 1121 is clamped into the groove 3113, which further increases the stability of the connection between the first air outlet net 1 and the rear net cover 3, and realizes a more stable connection. This design enhances the stability and connection strength of the fan 100 structure, reduces the problem of cracking or loosening that may occur during falling or use.

[0054] Further, the groove 3113 recessed inward on the outer side of the protrusion 3111 can have different shapes, such as circular, square or other suitable geometric shapes, to facilitate the clamping and fixing of the protrusion 1121. The protrusion 1121 can have a shape and size matching the groove 3113 to ensure that it can be stably clamped into the groove 3113. In addition, the materials of the protrusion 1121 and the groove 3113 can be selected as materials with certain elasticity to increase the tightness and durability of the connection. As a preferred embodiment, the protrusion 1121 can be integrally formed with the clamping block 112 by an injection molding process, reducing the assembly steps and improving the production efficiency.

[0055] Specifically, by forming a groove 3113 on the outer side of the protrusion 3111, and setting a number of protrusions 1121 consistent with the number of grooves 3113 between the clamping blocks 112, the protrusions 1121 are clamped into the grooves 3113, which further enhances the stability of the connection between the first air outlet net 1 and the rear net cover 3, achieving a more stable connection effect. Compared with the prior art, this design not only improves the stability and connection strength of the fan 100 structure, but also effectively reduces the problem of cracking or loosening that may occur during falling or use, thereby improving the overall service life and safety of the fan 100.

[0056] In an embodiment, referring to Figure 4 and Figure 5 , the groove wall of the mounting groove 111 is spaced apart along its circumference and is provided with a plurality of positioning blocks 1111, and the side of the second air outlet net 2 facing the rear net cover 3 is formed with a plurality of positioning grooves 22 along its circumference, and the groove opening of the positioning groove 22 is provided with a limiting block 221, and the limiting block 221 and the positioning groove 22 form a limiting groove 222 with an opening 2221 on one side, the positioning block 1111 is used to enter the positioning groove 22 from the groove opening of the positioning groove 22, and the second air outlet net 2 is rotated, the positioning block 1111 extends into the limiting groove 222 from the opening 2221, and the limiting block 221 limits the positioning block 1111; the bottom wall of the limiting groove 222 is further provided with a protrusion 223, and the positioning block 1111 is further provided with a recess 224, and after the positioning block 1111 extends into the limiting groove 222, the protrusion 223 extends into the recess 224. In this embodiment, the groove wall of the mounting groove 111 is provided with a plurality of positioning blocks 1111, and the side of the second air outlet net 2 facing the rear net cover 3 is formed with a plurality of positioning grooves 22 along its circumference, and the groove opening of the positioning groove 22 is provided with a limiting block 221, and the limiting block 221 and the positioning groove 22 form a limiting groove 222 with an opening 2221 on one side, the opening 2221 is used for the positioning block 1111 to extend into the positioning groove 22, and the second air outlet net 2 can rotate relative to the first air outlet net 1. During the installation of the first air outlet net 1 and the second air outlet net 2, the operator can extend the positioning block 1111 into the positioning groove 22 from the groove opening of the positioning groove 22, and make the positioning block 1111 move in the positioning groove 22, that is, the second air outlet net 2 rotates relative to the first air outlet net 1, so that the limiting block 221 extends into the limiting groove 222 from the opening 2221, so that the limiting block 221 limits the positioning block 1111, and by setting the protrusion 223 in the limiting groove 222 and the recess 224 on the limiting block 221, and making the protrusion 223 and the recess 224 cooperate, the connection stability of the first air outlet net 1 and the second air outlet net 2 is further increased. The above design can facilitate the positioning block 1111 to extend into the limiting groove 222 in the positioning groove 22, and increase the installation convenience between the first air outlet net 1 and the second air outlet net 2.

[0057] In an embodiment, referring toFigure 6 The rear mesh cover 3 further comprises a battery 32, a circuit board 33 and a rear cover 34, the mesh cover body 31 is provided with a circuit board compartment 312 on the side away from the first air outlet mesh 1, the battery 32 and the circuit board 33 are installed in the circuit board compartment 312, and the rear cover 34 covers the circuit board compartment 312. The rear mesh cover 3 accommodates the battery 32 and the circuit board 33 by providing the circuit board compartment 312, and covers the circuit board compartment 312 with the rear cover 34. These technical features cooperate with each other to enhance the overall structural strength of the fan 100. Specifically, the circuit board compartment 312 is provided on the side of the rear mesh cover 3 away from the first air outlet mesh 1, the battery 32 and the circuit board 33 are installed in the circuit board compartment 312 and electrically connected with the driving member 42, and the rear cover 34 covers the circuit board compartment 312. This design not only effectively protects the battery 32 and the circuit board 33, but also improves the overall strength of the fan 100. The circuit board compartment 312 can be made of high-strength material to further enhance its drop resistance. The rear cover 34 can be installed by screwing or buckling to ensure its stability and detachability.

[0058] By centrally arranging the battery 32 and the circuit board 33 in the circuit board compartment 312 of the rear mesh cover 3 and protecting them with the rear cover 34, this design not only improves the structural strength of the fan 100, but also simplifies the internal layout of the fan 100, facilitating the installation and maintenance of the battery 32 and the circuit board 33.

[0059] In an embodiment, the fan 100 further comprises a button assembly 7, the button assembly 7 is provided through the rear cover 34 and extends into the circuit board compartment 312, and the button assembly 7 comprises a plurality of keys 71. In the design of the fan 100 of the present application, the button assembly 7 is provided through the rear cover 34 and extends into the circuit board compartment 312, so that the button assembly 7 can abut against the circuit board 33 and send control signals. The plurality of keys 71 in the button assembly 7 can be used to control various functions of the fan 100. Such a design ensures reliable connection between the button assembly 7, the circuit board 33 and the battery 32, facilitates user operation of the fan 100, and improves the overall functionality and user experience of the fan 100. Through this scheme, the problem of how to realize electrical connection between the button assembly 7, the circuit board 33 and the battery 32 in the fan 100 is solved, ensuring that various functions of the fan 100 can be realized through the button assembly 7, and improving the operation convenience and functionality of the fan 100.

[0060] In an embodiment, the fan 100 further comprises an arc-shaped support 8, and the rear net cover 3 further comprises two mounting ears 35, which are respectively arranged on two sides of the net cover body 31 and are rotatably mounted on two ends of the arc-shaped support 8. The arc-shaped support 8 provides a stable support structure and effectively enhances the overall strength of the fan 100. The two mounting ears 35 of the rear net cover 3 are rotatably mounted on the two ends of the arc-shaped support 8, so that the fan 100 is more stable during use, reducing the risk of damage caused by falling or other external forces, and the mounting ears 35 can rotate relative to the arc-shaped support 8 to adjust the blowing angle of the fan 100. Through this structural design, the fan 100 not only has higher structural strength, but also maintains good air outlet effect.

[0061] Specifically, the arc-shaped support 8 can be made of metal material or high-strength plastic material to ensure that it has sufficient strength and durability. The mounting ears 35 can be connected with the arc-shaped support 8 through hinges or other rotating connection mechanisms, so that they can freely rotate within a certain range, thereby facilitating users to adjust the blowing direction of the fan 100 as needed. Further, the rotating mechanism of the mounting ears 35 can be designed with a locking device to fix it after being adjusted to the appropriate angle, preventing the fan 100 from changing the blowing direction due to vibration or movement during use. Compared with the prior art, the present application increases the arc-shaped support 8 and the mounting ears 35 in the fan 100, which not only enhances the overall structural strength of the fan 100 and improves the drop resistance, but also maintains good air outlet effect and flexible blowing angle adjustment function.

[0062] The above-mentioned is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A fan, characterized by, The fan comprises: A rear net cover comprising a net cover body, one side of the net cover body forming a mounting opening; A first air outlet net comprising an annular support, a central connecting piece and a plurality of spokes, the annular support being mounted in the mounting opening, one end of the spokes being connected to the inner side of the annular support, the other end of the spokes being connected to the central connecting piece, the plurality of spokes being arranged along the circumference of the central connecting piece; A second air outlet net, the side of the annular support away from the rear net cover forming a mounting groove, the second air outlet net being mounted in the mounting groove, the second air outlet net being provided with a through hole corresponding to the central connecting piece; A blowing assembly, the rear net cover, the first air outlet net and the second air outlet net enclosing a wind cavity, the blowing assembly comprising a fan blade arranged in the wind cavity and a driving member, the driving member being mounted on the net cover body, the driving member being used to drive the fan blade to rotate.

2. The fan of claim 1, wherein, The spokes are arc-shaped, one side of the spokes facing the fan blade forming an arc surface, the other side of the spokes away from the fan blade forming a first connecting surface and a second connecting surface, the second connecting surface being connected to the arc surface and forming a cutting wind angle with the arc surface, the cutting wind angle being arranged towards the fan blade.

3. The fan of claim 2, wherein, The central connecting piece is provided with a receiving groove, and the fan further comprises a functional module arranged in the receiving groove.

4. The fan of claim 3, wherein, Among the plurality of spokes, one side of one of the spokes is provided with a wiring groove, and the groove wall of the receiving groove is in communication with the wiring groove.

5. The fan of claim 1 wherein, The mounting opening is provided with a plurality of protrusions, the plurality of protrusions being arranged along the circumference of the mounting opening, a clamping groove being formed between any two adjacent protrusions, the inner side of the annular support being provided with a plurality of clamping blocks, the number of the clamping blocks being consistent with the number of the clamping grooves and the clamping blocks being inserted into the clamping grooves one by one.

6. The fan of claim 5, wherein, The outer side of the protrusion is recessed inward to form a groove, and a protrusion is arranged between any two adjacent clamping blocks, the number of the protrusions being consistent with the number of the protrusions and the protrusions being inserted into the grooves one by one.

7. The fan of claim 6, wherein The groove wall of the mounting groove is provided with a plurality of positioning blocks along the circumference thereof, one side of the second air outlet net facing the rear net cover is provided with a plurality of positioning grooves along the circumference thereof, a limiting block is arranged at the groove opening of the positioning groove, the limiting block and the positioning groove form an open limiting groove on one side, the positioning block is used to enter the limiting groove from the groove opening, the positioning block is inserted into the limiting groove by rotating the second air outlet net, and the limiting block limits the positioning block. The bottom wall of the limiting groove is further provided with a protrusion, and the positioning block is further provided with a recess, after the positioning block is inserted into the limiting groove, the protrusion is inserted into the recess.

8. The fan of claim 1 wherein, The rear net cover further comprises a battery, a circuit board and a rear cover, one side of the net cover body away from the first air outlet net is provided with a circuit board compartment, the battery and the circuit board are mounted in the circuit board compartment and are electrically connected with the driving member, and the rear cover covers the circuit board compartment.

9. The fan of claim 8, wherein, The fan further comprises a button assembly, the button assembly is arranged through the back cover and extends into the circuit board compartment, and the button assembly comprises a plurality of keys.

10. The fan of any one of claims 1-9, wherein, The fan further comprises an arc-shaped support, and the back mesh cover further comprises two mounting ears, the two mounting ears are arranged on two sides of the mesh cover body, and the two mounting ears are respectively rotatably installed at two ends of the arc-shaped support.

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