Fan head and fan

Abstract

This utility model relates to the field of home appliance technology, and discloses a fan head and a fan. The fan head includes a rear grille and a front shell assembly detachably connected to the rear grille. The front shell assembly includes: a front grille assembly, including an air duct and a front grille snapped onto one end of the air duct, with the other end of the air duct abutting against the rear grille; and a front shell, which is annular, screwed onto the end of the air duct where the front grille is located, and detachably connected to the rear grille, thereby fixing the front grille assembly to the rear grille. This application designs the front grille assembly (formed by combining the front grille and air duct) and the front shell assembly (formed by combining the front grille assembly and the front shell) as independent modules for detachable assembly, making it easier to clean the front grille and air duct. Since one end of the air duct snaps onto the front grille and the other end directly abuts against the rear grille, the air duct and rear grille only have contact contact without substantial connection, eliminating the need to disassemble and assemble the air duct and rear grille, further reducing the difficulty of air duct assembly and disassembly, and making air duct cleaning and maintenance more convenient.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, specifically to a fan head and a fan. Background Technology

[0002] Most fan products on the market are advertised as being washable, but users can only disassemble and clean the front grille; the internal air duct cannot be disassembled and cleaned. Furthermore, in traditional assembly methods, the air duct is connected to the front grille, front housing, and rear grille, and secured with multiple screws. To clean the air duct, users must disassemble each of these components separately, making the disassembly and assembly process cumbersome, difficult, and inconvenient for cleaning. Utility Model Content

[0003] In view of this, the present invention provides a fan head and a fan to solve the problems of cumbersome disassembly and assembly steps, high difficulty, and inconvenience in cleaning of the fan duct in the prior art.

[0004] In a first aspect, this utility model provides a fan head, which includes a rear grille and a front shell assembly detachably connected to the rear grille. The front shell assembly includes:

[0005] The front mesh assembly includes an air duct and a front mesh clipped and fixed to one end of the air duct, with the other end of the air duct abutting against the rear mesh.

[0006] The front shell is ring-shaped and is screwed onto the end of the air duct where the front mesh is located. It is also detachably connected to the rear mesh to fix the front mesh assembly to the rear mesh.

[0007] Beneficial effects: By designing the front grille assembly (formed by combining the front grille and the air duct) and the front shell assembly (formed by combining the front grille assembly and the front shell) as independent modules for easy cleaning of the front grille and air duct, it is more convenient to clean the front grille and air duct. Specifically, one end of the air duct is snapped into the front grille, and the other end directly abuts against the rear grille. The air duct is installed on the front grille by snapping, forming the front grille assembly. This makes it easier and faster to assemble and disassemble the air duct and the front grille. Furthermore, the air duct and the rear grille only have contact contact and no substantial connection, which can eliminate the steps of disassembling and assembling the air duct and the rear grille, further reducing the difficulty of air duct assembly and disassembly, and making it easier to clean and maintain the air duct.

[0008] Furthermore, the front grille and air duct are fixed by snap-fit, and the air duct and front shell are fixed by screw-on installation, reducing the number of screws used. This eliminates the need for external disassembly tools, allowing for easy assembly and disassembly of the air duct, front shell, and front grille, further simplifying assembly and improving efficiency, while also facilitating air duct cleaning. Moreover, the front shell is screwed onto the air duct from the end of the front grille assembly closest to the grille and is detachably connected to the rear grille, thus securing the entire front shell assembly to the rear grille. When cleaning is required, the user can remove the front shell assembly and then separately disassemble the air duct and front grille for cleaning. The entire fan head not only boasts high structural stability but also allows for quick assembly and disassembly of the air duct and front grille, effectively solving the problem of inconvenient disassembly and cleaning of fan air ducts in existing technologies.

[0009] In one alternative implementation, a positioning structure and a snap-fit ​​structure are provided on the front net;

[0010] The air duct is equipped with a positioning and fitting structure corresponding to the positioning structure, and a snap-fit ​​structure corresponding to the snap-fit ​​structure.

[0011] The front grille and air duct are positioned by a positioning structure and a positioning mating structure, and are fixed by a snap-fit ​​structure and a snap-fit ​​mating structure.

[0012] Beneficial effects: The positioning structure and the positioning mating structure work together to achieve precise positioning of the air duct and the front grille, ensuring accurate alignment of the snap-fit ​​structure and the snap-fit ​​mating structure, thus improving assembly efficiency. Furthermore, the snap-fit ​​fixation between the front grille and the air duct eliminates the need for external tools, allowing for easy assembly and disassembly of the air duct and air duct, reducing the difficulty of assembly and disassembly, and effectively improving the efficiency of air duct and front grille assembly and disassembly maintenance. Moreover, the positioning structure and the positioning mating structure work together to prevent radial detachment of the air duct and the front grille, while the snap-fit ​​structure and the snap-fit ​​mating structure provide axial positioning of the air duct and the front grille, thereby achieving omnidirectional fixation of the air duct and the front grille.

[0013] In one optional embodiment, the positioning structure includes positioning ribs disposed on the outer periphery of the front mesh, and the positioning mating structure includes positioning grooves correspondingly disposed on the outer periphery of the air duct.

[0014] And / or, the snap-fit ​​structure includes a snap-fit ​​body disposed on the outer periphery of the front mesh, and a snap-fit ​​groove is formed inside the snap-fit ​​body; the snap-fit ​​mating structure includes a snap-fit ​​boss disposed on the outer periphery of the air duct.

[0015] Beneficial effects: The positioning structure and positioning mating structure, using positioning ribs and positioning grooves, provide a simple and efficient positioning method. The snap-fit ​​structure, employing a snap-fit ​​main body with snap-fit ​​grooves and a snap-fit ​​mating structure with snap-fit ​​bosses, is simple in structure and provides a reliable and stable snap-fit ​​connection.

[0016] In one alternative embodiment, the front cover has a first end near the front mesh and a second end away from the front mesh;

[0017] The inner diameter of the first end of the front shell is smaller than the maximum outer diameter of the front grille, and the inner diameter of the second end of the front shell is larger than the outer diameter of the air duct.

[0018] The front cover is rotated and snapped onto the air duct from the end where the front grille is located, and the front grille can be fastened to the air duct.

[0019] Beneficial effects: The front shell adopts a design with different diameters at both ends. This design allows the larger diameter end to be fitted onto the air duct, while the smaller diameter end is limited to the outer periphery of the front mesh. This enables the front mesh to be firmly fixed to the air duct, further strengthening the connection between the front mesh and the air duct body and improving the stability of the fit between the front mesh and the air duct.

[0020] In one alternative embodiment, the inner periphery of the front shell is provided with a first engaging structure and a locking structure.

[0021] The outer periphery of the air duct is provided with a first engaging structure corresponding to the first engaging structure and a locking structure corresponding to the locking structure;

[0022] When the first engaging structure and the first engaging mating structure are rotated and engaged to the preset assembly position, the locking structure and the locking mating structure stop and engage to restrict the front shell and air duct in the assembly position.

[0023] Beneficial effects: The front shell rotates and engages with the air duct along the set assembly direction. When the front shell rotates to the position where the first engaging structure and the first engaging mating structure are engaged, the locking structure and the locking mating structure stop and engage to prevent the front shell from rotating in the opposite direction. This causes the first engaging structure and the first engaging mating structure to disengage from the limit position, thereby enabling the front shell and the air duct to be stably restricted in the preset assembly position, further improving the stability of the engagement between the front shell and the air duct.

[0024] In one optional embodiment, the first engaging structure includes an engaging plate disposed on the inner periphery of the front shell, the engaging plate and the front shell forming a rotating engaging groove, and the first engaging mating structure includes engaging mating ribs fixedly disposed on the outer peripheral wall of the air duct.

[0025] And / or, the locking structure includes an elastic latch disposed on the inner periphery of the front housing, and the locking engagement structure includes a stop rib fixedly disposed on the outer peripheral wall of the air duct. When the first engaging structure and the first engaging engagement structure are rotated and engaged to the preset assembly position, the stop rib is stopped and limited in the elastic latch.

[0026] Beneficial effects: The first engaging structure employs a rotating engaging groove formed by the engaging plate and the front shell, while the first engaging mating structure uses engaging ribs. These structures are simple and provide good engaging and fixing effects. The locking structure and locking mating structure utilize elastic latches and stop ribs, resulting in simple structures and good stopping and limiting effects.

[0027] In one alternative embodiment, the front shell and the rear mesh are secured by a rotating snap fastener and screws.

[0028] Beneficial effects: The front shell and rear mesh are connected and fixed by a combination of rotating clips and screws. This ensures the stability of the entire fan head structure while reducing the number of screws used, simplifying assembly, and improving assembly efficiency.

[0029] In one alternative embodiment, the inner periphery of the rear mesh is provided with a second engaging structure and a screw connection structure.

[0030] The front shell is provided with a second engaging structure corresponding to the second engaging structure, and a screw engaging connection structure is provided corresponding to the screw connection structure.

[0031] When the second engaging structure and the second engaging mating structure are rotated and engaged to the assembly positions corresponding to the screw connection structure and the screw mating connection structure, the screw connection structure and the screw mating connection structure are connected by screws.

[0032] Beneficial effects: When assembling the front shell assembly and the rear mesh, the front shell assembly is first rotated and engaged to the corresponding assembly position of the screw engagement connection structure and the screw connection structure through the second engaging structure. Then, the screw connection structure and the screw engagement connection structure are connected by screws to fix the front shell assembly and the rear mesh. The front shell assembly and the rear mesh are pre-positioned by rotating engagement. Compared with the existing method of alignment and positioning using positioning pins, this method reduces alignment difficulty, saves manpower and time, and improves production efficiency. It effectively solves the problems of high alignment difficulty and inconvenient operation of the existing method of positioning using positioning pins and positioning holes. At the same time, the front shell assembly and the rear mesh can also form a connection limit in the direction of the fan head's rotation axis. Since the two are engaged with each other to form a certain constraint, the number of screws used can be adaptively reduced, the assembly steps can be simplified, the assembly difficulty can be reduced, and the assembly efficiency can be improved. In addition, the front shell assembly and the rear grille are locked and fixed by a combination of rotation and screws. Compared with a single snap-fit, or a buckle, or a combination of snap-fit ​​and buckle, the fixation is more reliable and stable, the fan is less likely to shake, the overall stability of the machine is higher, and it meets safety requirements.

[0033] In one optional embodiment, the air duct includes an air duct body and a guide section disposed at one end of the air duct body near the rear net, wherein the inner diameter of the guide section gradually increases from the air duct body toward the rear net.

[0034] The rear net includes a rear net body and an installation part with the outer peripheral edge of the rear net body. A transition connection surface is formed between the rear net body and the installation part, and the guide section abuts against the transition connection surface.

[0035] The mounting section is connected to the front housing and covers the outside of the air duct.

[0036] Beneficial effects: By incorporating a guide section with a gradually increasing inner diameter at the rear of the duct body, the duct body can fit snugly against the rear grille after the front shell assembly is assembled, resulting in smoother airflow and a larger contact area between the duct and the rear grille, leading to greater stability in their fit. Furthermore, the design of the mounting section on the rear grille facilitates connection to the front shell and allows it to be concealed within the duct, enhancing its aesthetics.

[0037] Secondly, this utility model also provides a fan, including the fan head of any of the above embodiments. Attached Figure Description

[0038] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0039] Figure 1 This is a cross-sectional view of the fan in an embodiment of this utility model;

[0040] Figure 2 for Figure 1 Enlarged view of the structure of the central fan head;

[0041] Figure 3 This is a schematic diagram showing the disassembly of the front shell assembly and the rear mesh in an embodiment of this utility model;

[0042] Figure 4 This is a schematic diagram of the front mesh structure in an embodiment of this utility model;

[0043] Figure 5 This is a schematic diagram of the air duct structure in an embodiment of this utility model;

[0044] Figure 6 This is a schematic diagram of the structure of the front grille assembly (assembled air duct and front grille) in an embodiment of this utility model;

[0045] Figure 7 This is an axial view of the internal structure of the front shell in an embodiment of this utility model;

[0046] Figure 8 for Figure 7 Top view;

[0047] Figure 9 for Figure 8 A sectional view;

[0048] Figure 10 This is a structural schematic diagram of the front shell assembly (assembled front shell, air duct and front grille) in an embodiment of this utility model;

[0049] Figure 11 This is a schematic diagram of the structure of the rear mesh in an embodiment of this utility model.

[0050] Explanation of reference numerals in the attached figures:

[0051] 10. Fan head;

[0052] 11. Rear mesh; 111. Second snap-fit ​​structure; 112. Screw connection structure; 11a. Rear mesh main body; 11b. Mounting part;

[0053] 12. Air duct; 120. Guide section; 121. Positioning and fitting structure; 122. Snap-fitting structure; 123. First snap-fitting structure; 124. Locking structure;

[0054] 13. Front grille; 131. Positioning structure; 132. Clip-on structure;

[0055] 14. Front housing; 141. First engaging structure; 142. Locking structure; 143. Second engaging structure; 144. Screw connection structure;

[0056] 20. Fuselage;

[0057] 30. Base. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0059] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0062] The following is combined Figures 1 to 11 The following describes embodiments of the present invention.

[0063] According to an embodiment of the present invention, in one aspect, the present invention provides a fan head 10, including a rear mesh 11 and a front shell assembly detachably connected to the rear mesh 11. The front shell assembly includes a front mesh assembly and a front shell 14, wherein the front mesh assembly includes an air duct 12 and a front mesh 13 snapped and fixed to one end of the air duct 12, and the other end of the air duct 12 abuts against the rear mesh 11; the front shell 14 is annular, and the front shell 14 is screwed onto the end of the air duct 12 where the front mesh 13 is provided, and is detachably connected to the rear mesh 11.

[0064] In the above embodiments, by designing the front mesh assembly formed by combining the front mesh 13 and the air duct 12, and the front shell assembly formed by the front mesh assembly and the front shell 14 as independent modules for detachability, it is more convenient to clean the front mesh 13 and the air duct 12. Specifically, one end of the air duct 12 is snapped into the front mesh 13, and the other end directly abuts against the rear mesh 11. The air duct 12 is installed on the front mesh 13 by snapping, forming the front mesh assembly with the front mesh 13. This makes it easier and faster to disassemble and assemble the air duct 12 and the front mesh 13. Furthermore, the air duct 12 and the rear mesh 11 are only in contact and have no substantial connection, which can save the steps of disassembling and assembling the air duct 12 and the rear mesh 11, further reducing the difficulty of disassembling and assembling the air duct 12 and making it more convenient to clean and maintain the air duct 12.

[0065] Furthermore, the front grille 13 is fixed to the air duct 12 by a snap-fit ​​connection, and the air duct 12 is fixed to the front shell 14 by a screw-on installation method. This reduces the number of screws used and allows for the assembly and disassembly of the air duct 12, front shell 14, and front grille 13 without the need for external disassembly tools. This further reduces the difficulty of assembling and disassembling the air duct 12, improves assembly efficiency, and reduces the number of screws used. Furthermore, the front shell 14 is screwed onto the air duct 12 from the end of the front grille assembly closest to the front grille 13 and is detachably connected to the rear grille 11, thus fixing the entire front shell assembly to the rear grille 11. When the user needs to disassemble and clean, the front shell assembly can be removed, and then the air duct 12 and front grille 13 can be disassembled separately for cleaning. The entire fan head not only has high structural stability but also allows for quick assembly and disassembly of the air duct 12 and front grille, effectively solving the problem of inconvenient disassembly and cleaning of the fan air duct 12 in existing technologies.

[0066] Specifically, the air duct 12 is cylindrical, with the front mesh 13 snapped onto one end of the air duct 12. The other end of the air duct 12 extends towards the rear mesh 11 and abuts against the circumference of the rear mesh 11. A fan assembly is installed inside the air duct 12. The front shell 14 is rotatably fastened to the end of the air duct 12 where the front mesh 13 is located, and the front shell 14 is fitted into the mating part of the air duct 12 and the front mesh 13. The front shell 14 can tightly fasten the front mesh 13 to the air duct 12, further reinforcing the connection between the front mesh 13 and the air duct 12.

[0067] Furthermore, the front shell 14 and the rear mesh 11 are fixed together by screws and / or snap-fit, thereby achieving the connection and fixation of the entire front shell assembly and the rear mesh 11.

[0068] In some embodiments, the front net 13 is provided with a positioning structure 131 and a snap-fit ​​structure 132; the air duct 12 is provided with a positioning mating structure 121 corresponding to the positioning structure 131 and a snap-fit ​​mating structure 122 corresponding to the snap-fit ​​structure 132; the front net 13 and the air duct 12 are positioned by the positioning structure 131 and the positioning mating structure 121, and are snap-fitted and fixed by the snap-fit ​​structure 132 and the snap-fit ​​mating structure 122.

[0069] In the above embodiments, the positioning structure 131 and the positioning mating structure 121 can achieve the positioning of the air duct 12 and the front net 13, enabling the snap-fit ​​structure 132 and the snap-fit ​​mating structure 122 to accurately align, thus improving assembly efficiency. Furthermore, the snap-fit ​​fixation between the front net 13 and the air duct 12 allows for easy assembly and disassembly of the front net 13 and the air duct 12 without the need for external tools, reducing assembly and disassembly difficulty and effectively improving the efficiency of assembly and maintenance of the air duct 12 and the front net 13. Moreover, the cooperation of the positioning structure 131 and the positioning mating structure 121 can prevent radial detachment of the air duct 12 and the front net 13, while the snap-fit ​​structure 132 and the snap-fit ​​mating structure 122 can limit the axial movement of the air duct 12 and the front net 13, thereby achieving omnidirectional fixation of the air duct 12 and the front net 13.

[0070] Specifically, the positioning structure 131 and the positioning mating structure 121 are inserted for positioning or engaged with a concave-convex positioning fit. One of the positioning structures 131 and the positioning mating structure 121 is a positioning post and the other is a positioning hole, or one is a positioning rib and the other is a positioning groove, or one is a positioning protrusion and the other is a positioning groove. One of the snap-fit ​​structures 132 and the snap-fit ​​mating structure 122 is a snap-fit ​​and the other is a snap-fit ​​platform; or one is a snap-fit ​​and the other is a snap-fit ​​groove. This embodiment does not limit the specific structural forms of the positioning structures 131 and the positioning mating structure 121, as well as the snap-fit ​​structures 132 and the snap-fit ​​mating structure 122.

[0071] In some embodiments, the positioning structure 131 includes positioning ribs disposed on the outer periphery of the front mesh 13, and the positioning mating structure 121 includes positioning grooves correspondingly disposed on the outer periphery of the air duct 12. The snap-fit ​​structure 132 includes a snap-fit ​​body disposed on the outer periphery of the front mesh 13, with a snap-fit ​​groove formed therein, and the snap-fit ​​mating structure 122 includes a snap-fit ​​boss disposed on the outer periphery of the air duct 12.

[0072] In the above embodiments, the positioning structure 131 and the positioning mating structure 121 are positioned by means of positioning ribs and positioning grooves, which is simple and efficient. The snap-fit ​​structure 132 adopts a snap-fit ​​body with a snap-fit ​​groove and the snap-fit ​​mating structure 122 adopts a snap-fit ​​boss, which is simple in structure and provides a reliable and stable snap-fit.

[0073] Specifically, such as Figures 4 to 6 As shown, the positioning structure 131 has at least two sets, and is spaced apart circumferentially along the front mesh 13; the positioning mating structure 121 also has at least two sets, and is spaced apart circumferentially along the air duct 12, further improving the positioning effect. The snap-fit ​​structure 132 has at least two sets, and is spaced apart circumferentially along the front mesh 13; the snap-fit ​​mating structure 122 also has at least two sets, and is spaced apart circumferentially along the air duct 12, further improving the snap-fit ​​effect. Preferably, in this embodiment, the positioning structure 131 and the snap-fit ​​structure 132 are arranged alternately, and the positioning mating structure 121 and the snap-fit ​​mating structure 122 are arranged alternately.

[0074] Furthermore, each positioning structure 131 includes two positioning ribs arranged with a set gap, forming an insertion gap between the two positioning ribs. The positioning ribs extend towards the air duct 12, and the extension direction of the positioning ribs is parallel to the axial direction of the front mesh 13. The positioning mating structure 121 includes a mountain-shaped rib fixedly arranged on the outer peripheral wall of the air duct 12. The mountain-shaped rib includes a U-shaped surrounding rib and a protruding rib in the middle of the U-shaped surrounding rib. Two positioning grooves are formed between the protruding rib and the two side walls of the U-shaped surrounding rib. The two positioning ribs are correspondingly inserted into the two positioning grooves, and the protruding rib is correspondingly inserted into the insertion gap between the two positioning ribs. Through the above design, the positioning structure 131 and the positioning mating structure 121 can form a cross-interlocking insertion positioning effect, which not only forms a good positioning effect, but also forms a limit in the circumferential direction, further improving the stability of the mating of the positioning structure 131 and the positioning mating structure 121.

[0075] Furthermore, the snap-fit ​​structure 132 is a U-shaped snap-fit, and the snap-fit ​​body is fixedly set on the outer periphery of the front net 13 near the air duct 12. The snap-fit ​​body has a U-shaped structure, and the hollow area of ​​the U-shaped snap-fit ​​body forms a slot. The snap-fit ​​protrusion is fixedly set on the outer wall of the end of the air duct 12 near the front net 13. Preferably, the snap-fit ​​protrusion has an inclined guide surface, which can guide the snap-fit ​​protrusion to snap into the slot of the snap-fit ​​body to avoid mechanical jamming.

[0076] In some embodiments, the front shell 14 has a first end close to the front mesh 13 and a second end away from the front mesh 13; the inner diameter of the first end of the front shell 14 is smaller than the maximum outer diameter of the front mesh 13, and the inner diameter of the second end of the front shell 14 is larger than the outer diameter of the air duct 12; the front shell 14 is rotated and snapped onto the air duct 12 from the end of the air duct 12 where the front mesh 13 is located, and the front mesh 13 can be fastened to the air duct 12.

[0077] In the above embodiment, the front shell 14 adopts a design with different diameters at both ends. This design allows the larger diameter end to be fitted onto the air duct 12, while the smaller diameter end is limited to the outer periphery of the front mesh 13. This enables the front mesh 13 to be fastened to the air duct 12, further strengthening the connection between the front mesh 13 and the air duct body and improving the stability of the fit between the front mesh 13 and the air duct 12.

[0078] In some embodiments, the inner periphery of the front shell 14 is provided with a first engaging structure 141 and a locking structure 142; the outer periphery of the air duct 12 is provided with a first engaging engagement structure 123 corresponding to the first engaging structure 141 and a locking engagement structure 124 corresponding to the locking structure 142; when the first engaging structure 141 and the first engaging engagement structure 123 are rotated and engaged to a preset assembly position, the locking structure 142 and the locking engagement structure 124 stop and engage to restrict the front shell 14 and the air duct 12 to the assembly position.

[0079] In the above embodiment, the front shell 14 rotates and engages with the air duct 12 along the set assembly direction. When the front shell 14 rotates to the position where the first engaging structure 141 and the first engaging engagement structure 123 are engaged, the locking structure 142 and the locking engagement structure 124 stop and engage to prevent the front shell 14 from rotating in the opposite direction, so that the first engaging structure 141 and the first engaging engagement structure 123 are disengaged from the limit position. This enables the front shell 14 and the air duct 12 to be stably restricted in the preset assembly position, further improving the stability of the engagement between the front shell 14 and the air duct 12.

[0080] Specifically, there are at least two sets of the first engaging structure 141 and the first engaging mating structure 123, which are arranged at intervals along the circumference of the front shell 14. Preferably, in this embodiment, there are four sets of the first engaging structure 141 and the first engaging mating structure 123. There are at least two sets of the locking structure 142 and the locking mating structure 124, which are arranged at intervals along the circumference of the air duct 12. Preferably, in this embodiment, there are two sets of the locking structure 142 and the locking mating structure 124.

[0081] Furthermore, the first engaging structure 141 has a forward stop portion. When the first engaging structure 141 and the first engaging mating structure 123 are engaged to the preset assembly position, the forward stop portion abuts against the first engaging mating structure 123, restricting the front shell 14 from continuing to rotate. At the same time, the locking structure 142 and the locking mating structure 124 stop and restrict the front shell 14 from rotating in the opposite direction, thereby stably restricting the front shell 14 to the preset assembly position and fixing the front shell 14 and the front mesh assembly.

[0082] In some embodiments, the first engaging structure 141 includes an engaging plate disposed on the inner periphery of the front housing 14, the engaging plate and the front housing 14 forming a rotating engaging groove, and the first engaging mating structure 123 includes engaging mating ribs fixedly disposed on the outer peripheral wall of the air duct 12. The locking structure 142 includes an elastic latch disposed on the inner periphery of the front housing 14, and the locking mating structure 124 includes a stop rib fixedly disposed on the outer peripheral wall of the air duct 12. When the first engaging structure 141 and the first engaging mating structure 123 are rotated and engaged to a preset assembly position, the stop rib is stopped and limited in the elastic latch.

[0083] In the above embodiments, the first engaging structure 141 adopts a rotating engaging groove formed by the engaging plate and the front shell 14, and the first engaging mating structure 123 adopts an engaging mating rib structure, which is simple in structure and has a good engaging and fixing effect. The locking structure 142 and the locking mating structure 124 adopt an elastic buckle and a stop rib structure, which is simple in structure and has a good stopping and limiting effect.

[0084] Specifically, the locking plate is an L-shaped plate structure. The L-shaped locking plate and the front shell 14 form a rotating locking groove. The locking plate includes a first locking wall and a second locking wall connected to the first locking wall in an L-shape. One end of the first locking wall is connected to the front shell 14, and the other end is connected to the second locking wall. The first locking wall, the second locking wall, and the front shell 14 form a rotating locking groove. The first locking wall constitutes a positive stop. When the front shell 14 and the air duct 12 are rotated into position, the first locking wall can abut against the locking rib to restrict the front shell 14 from continuing to rotate.

[0085] Furthermore, the stop rib is a strip-shaped rib arranged along the axial direction of the air duct 12 on the outer peripheral wall of the air duct 12. The elastic latch includes a latch body and a snap-fit ​​part arranged at the end of the latch body. The snap-fit ​​part has an inclined guide wall surface and a snap-fit ​​wall surface arranged perpendicular to the latch body. The guide wall surface is used to guide the stop rib to snap onto the snap-fit ​​wall surface when the front shell 14 rotates in a set assembly direction. When the front shell 14 is rotated into position, the stop rib can snap onto the snap-fit ​​wall surface under the guidance of the guide wall surface and abut against the snap-fit ​​wall surface to prevent the front shell 14 from rotating in the opposite direction.

[0086] In this embodiment, the front mesh assembly and the front shell 14 are connected by a snap-fit ​​structure. The inner wall of the front shell 14 is provided with four evenly distributed locking plates. The locking plates and the front shell 14 form a rotating locking groove. The edge of the air duct 12 is provided with corresponding locking and engaging ribs. During assembly, the front shell 14 can be rotated by a set angle to complete the locking and fixing of the front shell 14 and the front mesh assembly.

[0087] In some embodiments, the front shell 14 and the rear mesh 11 are fixed by a rotating snap and a screw connection.

[0088] In the above embodiment, the front shell 14 and the rear mesh 11 are connected and fixed by a rotating buckle and screws. While ensuring the structural stability of the entire fan head 10, the number of screws used can be reduced, the assembly difficulty can be reduced, and the assembly efficiency can be improved.

[0089] Preferably, the front shell 14 and the rear mesh 11 are connected and fixed by a rotatable buckle and a screw.

[0090] In some embodiments, the inner periphery of the rear mesh 11 is provided with a second engaging structure 111 and a screw connection structure 112, and the inner periphery of the front shell 14 is provided with a second engaging engagement structure 143 corresponding to the second engaging structure 111 and a screw engagement connection structure 144 corresponding to the screw connection structure 112; when the second engaging engagement structure 143 and the second engaging structure 111 are rotated and engaged to the assembly positions corresponding to the screw engagement connection structure 144 and the screw connection structure 112, the screw connection structure 112 and the screw engagement connection structure 144 are connected by screws.

[0091] In the above embodiment, when assembling the front shell assembly and the rear mesh 11, the front shell assembly is first rotated and engaged to the corresponding assembly positions of the screw connection structure 144 and the screw connection structure 112 through the second engaging structure 143 and the second engaging structure 111. Then, the screw connection structure 112 and the screw engaging structure 144 are connected by screws, thereby fixing the front shell assembly and the rear mesh 11. The front shell assembly and the rear mesh 11 are pre-positioned by rotating and engaging. Compared with the existing method of alignment and positioning by positioning pins, this method can reduce the difficulty of alignment, save manpower and time, and improve production efficiency. It effectively solves the problems of high alignment difficulty and inconvenient operation of the existing method of positioning by positioning pins and positioning holes. At the same time, the front shell assembly and the rear mesh 11 can also form a connection limit in the direction of the rotation axis of the fan head. Since the two are engaged with each other to form a certain constraint, the number of screws used can be reduced adaptively, the assembly steps can be simplified, the assembly difficulty can be reduced, and the assembly efficiency can be improved. In addition, the front shell assembly and the rear grille 11 are locked and fixed by a combination of rotation and screws. Compared with a single snap-fit, or a buckle, or a combination of snap-fit ​​and buckle, the fixation is more reliable and stable, the fan is less likely to shake, the overall stability of the machine is higher, and it meets safety requirements.

[0092] In some embodiments, multiple sets of the second engaging structure 143 and the second engaging structure 111 are provided and are spaced apart circumferentially along the front shell 14 and the rear mesh 11, respectively. Preferably, four sets of the second engaging structure 143 and the second engaging structure 111 are provided, and one set of the screw engaging connection structure 144 and the screw connection structure 112 are provided. Preferably, the screw engaging connection structure 144 and the screw connection structure 112 are located at the bottom of the machine head. The entire front shell assembly is fixed to the rear mesh 11 by four buckles and one screw, which reduces the number of screws used and lowers the difficulty of disassembly and assembly while ensuring the structural stability of the machine head.

[0093] Specifically, the second engaging structure 143 includes engaging ribs provided on the inner peripheral wall of the front shell 14, and the second engaging structure 111 includes a swivel fixedly provided on the inner peripheral wall of the rear mesh 11. The swivel is an L-shaped plate structure. The L-shaped swivel includes a first engaging wall and a second engaging wall that are vertically connected. One side wall of the first engaging wall and the second engaging wall is connected to the inner peripheral wall of the rear mesh 11. The space between the first engaging wall and the second engaging wall forms an engaging groove. Further, the first engaging wall extends circumferentially along the rear mesh 11, and the second engaging wall is provided at one end of the first engaging wall. When the front shell assembly is rotated into position, the second engaging wall can stop and engage with the second engaging structure 143.

[0094] Furthermore, the screw-fit connection structure 144 includes a bolt post disposed on the inner peripheral wall of the front shell 14, and the screw connection structure 112 includes a screw hole disposed on the rear mesh 11. Preferably, the bolt post is disposed at the bottommost position of the inner peripheral wall of the front shell 14, and the screw hole is disposed at the lowest position of the peripheral wall of the rear mesh 11. Preferably, in this embodiment, the front shell assembly is connected to the rear mesh 11 by four circumferentially distributed screw threads and a central positioning screw.

[0095] In some embodiments, the air duct 12 includes an air duct body and a guide section 120 disposed at one end of the air duct body near the rear net 11. The inner diameter of the guide section 120 gradually increases from the air duct body toward the rear net 11. The rear net 11 includes a rear net body 11a and a mounting portion 11b disposed at the outer peripheral edge of the rear net body 11a. A transition connection surface is formed between the rear net body 11a and the mounting portion 11b. The guide section 120 abuts against the transition connection surface. The mounting portion 11b is connected to the front shell 14 and covers the outside of the air duct 12.

[0096] In the above embodiment, the guide section 120 with a gradually increasing inner diameter at the tail of the air duct body allows the air duct body to fit tightly against the rear net 11 after the front shell assembly is assembled with the rear net 11, resulting in smoother airflow and a larger contact area between the air duct 12 and the rear net 11, thus improving the stability of the fit. Furthermore, the design of the mounting part 11b on the rear net body 11a facilitates connection with the front shell 14 and allows it to cover the air duct 12, thus concealing the air duct 12 and improving aesthetics.

[0097] Preferably, in this embodiment, the guide section 120 has a certain curvature to ensure a smooth transition and prevent obstruction.

[0098] In this embodiment, the assembly process of the fan head 10 is as follows:

[0099] Front mesh assembly: Align the positioning ribs on the air duct 12 with the positioning grooves on the front mesh 13 and assemble them. Press along the guide of the positioning structure 131 and the positioning mating structure 121 until the locking structure 132 and the locking mating structure 122 make a "click" locking sound. At this time, the locking structure 132 and the locking mating structure 122, the positioning structure 131 and the positioning mating structure 121 realize the axial limitation and radial anti-detachment of the front mesh 13 and the air duct 12.

[0100] Front shell 14 assembly: Hold the edge of the front grille assembly, align the starting end of the rotating guide groove of the first engaging structure 141 on the inner wall of the front shell 14 with the first engaging and mating structure 123 of the front grille assembly, and rotate clockwise by a set angle. At this time, the first engaging structure 141 on the inner wall of the front shell 14 and the first engaging and mating structure 123 are engaged in place, and the locking structure 142 on the front shell 14 and the locking and mating structure 124 on the front grille assembly are engaged in place to complete the locking.

[0101] Complete machine installation: Align the starting end of the second engaging structure 143 of the assembled front shell assembly with the second engaging structure 111 of the rear net 11, and rotate clockwise by a set angle. At this time, the second engaging structure 143 on the inner wall of the front shell assembly and the second engaging structure 111 of the rear net 11 are engaged in place, and the screw holes on the rear net 11 and the screw posts on the front shell 14 are locked together by screws.

[0102] In this embodiment, the assembly process of the fan head 10 is optimized into a three-level modular assembly system of "air duct 12-front grille 13 pre-installation with clips → front grille assembly rotating and fastening front shell 14 → whole machine screw positioning + screw reinforcement". The disassembly process is "unscrew the screws, rotate the front shell assembly counterclockwise, and then take out the front shell assembly for cleaning".

[0103] According to an embodiment of the present invention, in another aspect, a fan is provided, including a fan head 10 of any of the above embodiments. The fan also includes a body 20 and a base 30, with the body 20 connected between the base 30 and the fan head 10.

[0104] It should be noted that the fans in this embodiment include, but are not limited to, various forced convection devices such as floor fans, tower fans, and air circulators, which are particularly well-suited to the rigid demand for deep cleaning in maternal and infant appliances and medical purification equipment. In the future, this can be extended to scenarios such as air conditioning vents and fresh air system ducts.

[0105] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A fan head, characterized in that, Includes a rear grille (11) and a front shell assembly detachably connected to the rear grille (11), the front shell assembly comprising: The front net assembly includes an air duct (12) and a front net (13) snapped and fixed at one end of the air duct (12), with the other end of the air duct (12) abutting against the rear net (11); The front shell (14) is ring-shaped. The front shell (14) is screwed onto one end of the air duct (12) where the front net (13) is located, and is detachably connected to the rear net (11) to fix the front net assembly to the rear net (11).

2. The fan head according to claim 1, characterized in that, The front net (13) is provided with a positioning structure (131) and a snap-fit ​​structure (132); The air duct (12) is provided with a positioning mating structure (121) corresponding to the positioning structure (131) and a snap-fit ​​mating structure (122) corresponding to the snap-fit ​​structure (132); The front net (13) and the air duct (12) are positioned by the positioning structure (131) and the positioning mating structure (121), and are fixed by the snap-fit ​​structure (132) and the snap-fit ​​mating structure (122).

3. The fan head according to claim 2, characterized in that, The positioning structure (131) includes a positioning rib disposed on the outer periphery of the front mesh (13), and the positioning mating structure (121) includes a positioning groove disposed on the outer periphery of the air duct (12); And / or, the snap-fit ​​structure (132) includes a snap-fit ​​body disposed on the outer periphery of the front mesh (13), the snap-fit ​​body having a snap-fit ​​groove formed therein, and the snap-fit ​​mating structure (122) includes a snap-fit ​​boss disposed on the outer periphery of the air duct (12).

4. The fan head according to any one of claims 1 to 3, characterized in that, The front shell (14) has a first end close to the front mesh (13) and a second end away from the front mesh (13); The inner diameter of the first end of the front shell (14) is smaller than the maximum outer diameter of the front mesh (13), and the inner diameter of the second end of the front shell (14) is larger than the outer diameter of the air duct (12). The front shell (14) is rotated and snapped onto the air duct (12) from the end where the front net (13) is located, and the front net (13) can be fastened to the air duct (12).

5. The fan head according to any one of claims 1 to 3, characterized in that, The inner periphery of the front shell (14) is provided with a first engaging structure (141) and a locking structure (142); The outer periphery of the air duct (12) is provided with a first engaging structure (123) corresponding to the first engaging structure (141) and a locking structure (124) corresponding to the locking structure (142); When the first engaging structure (141) and the first engaging engagement structure (123) are rotated and engaged to the preset assembly position, the locking structure (142) and the locking engagement structure (124) engage to stop and restrict the front shell (14) and the air duct (12) to the assembly position.

6. The fan head according to claim 5, characterized in that, The first engaging structure (141) includes an engaging plate disposed on the inner periphery of the front shell (14), the engaging plate and the front shell (14) enclose to form a rotating engaging groove, and the first engaging mating structure (123) includes engaging mating ribs fixedly disposed on the outer peripheral wall of the air duct (12). And / or, the locking structure (142) includes an elastic latch disposed on the inner periphery of the front shell (14), and the locking engagement structure (124) includes a stop rib fixedly disposed on the outer peripheral wall of the air duct (12). When the first engaging structure (141) and the first engaging engagement structure (123) are rotated and engaged to a preset assembly position, the stop rib is stopped and limited in the elastic latch.

7. The fan head according to any one of claims 1 to 3, characterized in that, The front shell (14) and the rear mesh (11) are fixed by a rotating snap fastener and by screw connection.

8. The fan head according to any one of claims 1 to 3, characterized in that, The inner periphery of the rear mesh (11) is provided with a second snap-fit ​​structure (111) and a screw connection structure (112); The front shell (14) is provided with a second engaging structure (143) corresponding to the second engaging structure (111) and a screw engaging connection structure (144) corresponding to the screw connection structure (112); When the second engaging structure (111) and the second engaging mating structure (143) are rotated and engaged to the assembly positions corresponding to the screw connection structure (112) and the screw mating connection structure (144), the screw connection structure (112) and the screw mating connection structure (144) are connected by screws.

9. The fan head according to any one of claims 1 to 3, characterized in that, The air duct (12) includes an air duct body and a guide section (120) disposed at one end of the air duct body near the rear net (11). The inner diameter of the guide section (120) gradually increases from the air duct body toward the rear net (11). The rear net (11) includes a rear net body (11a) and a mounting part (11b) with the outer peripheral edge of the rear net body (11a). A transition connection surface is formed between the rear net body (11a) and the mounting part (11b), and the guide section (120) abuts against the transition connection surface. The mounting part (11b) is connected to the front shell (14) and covers the outside of the air duct (12).

10. A fan, characterized in that, Includes the fan head (10) as described in any one of claims 1 to 9 above.

Images