Negative ion module and air curtain device

Abstract

The utility model discloses a kind of negative ion module and air curtain device, and negative ion module includes mounting seat and negative ion generator;Mounting seat includes base and upper cover, base has the installation cavity with opening upward, upper cover is covered in the top opening of base, upper cover is protruded with limit structure to the side of installation cavity, limit structure is cooperated with the inner wall of installation cavity, to limit upper cover to separate from base;Negative ion generator is installed in installation cavity.The utility model's negative ion module, by the cooperation of limit structure and installation cavity inner wall, the firm connection of upper cover and base is realized, without using screw or buckle.This design simplifies assembly process, improves production efficiency.Due to the need for additional connecting piece, reduce material cost and warehousing management cost.Limit structure and the close cooperation of installation cavity inner wall eliminate assembly gap, effectively prevent the shaking or misplacement between upper cover and base.

Description

Technical Field

[0001] This utility model relates to the field of negative ion module technology, and in particular to a negative ion module and an air curtain device. Background Technology

[0002] Existing air curtain devices with purification functions have a negative ion module installed in the air duct of the cyclone cover. The module generates negative ions in the air duct, which are then blown out of the air duct along with the airflow of the air curtain. The negative ion module typically includes a base, a negative ion generator installed on the base, and a cover plate placed on the base. In the existing technology, the cover plate and the base are usually connected by screws or clips. The assembly process of screw connection is cumbersome, has low production efficiency, and requires additional screw parts, increasing material costs and warehousing management costs. The snap-fit ​​connection has a large assembly gap, which makes it easy for the cover plate to wobble or misalign after it is joined with the base. In addition, the strength and durability of the snap-fit ​​structure are limited, and it is easy to wear or break after repeated disassembly and assembly, resulting in connection failure. Utility Model Content

[0003] The main purpose of this invention is to propose a negative ion module to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the negative ion module proposed in this utility model includes a mounting base and a negative ion generator; the mounting base includes a base and a top cover, the base has an upward-facing mounting cavity, the top cover covers the top opening of the base, and a limiting structure protrudes from the side of the top cover facing the mounting cavity, the limiting structure cooperates with the inner wall of the mounting cavity to prevent the top cover from detaching from the base; the negative ion generator is installed in the mounting cavity.

[0005] According to one embodiment of the present invention, the limiting structure includes a fixing protrusion, which extends at least partially along the length direction of the base and engages with the inner wall of the mounting cavity.

[0006] According to one embodiment of the present invention, the extended shape of the fixing protrusion is adapted to the opening shape of the mounting cavity.

[0007] According to one embodiment of the present invention, the limiting structure further includes a plurality of limiting ribs connected to the fixed protrusion, the plurality of limiting ribs being spaced apart along the extending direction of the fixed protrusion, and the plurality of limiting ribs clamping the inner wall of the mounting cavity.

[0008] According to one embodiment of the present invention, the limiting rib has a guide slope, which is inclined toward the inner wall of the mounting cavity. The guide slope is used to reduce the resistance when the limiting rib passes through the opening of the mounting cavity.

[0009] According to one embodiment of the present invention, the limiting structure further includes a positioning rib connected to the fixing rib, and a positioning groove is provided on the inner wall surface of the mounting cavity, with the positioning rib and the positioning groove being positioned and engaged.

[0010] According to one embodiment of the present invention, the base is provided with a cable outlet groove communicating with the mounting cavity. The mounting cavity includes a horizontal part and a vertical part. The negative ion generator includes a negative ion emitting head and a power cord connected to each other. The negative ion emitting head extends out of the mounting cavity through the vertical part, and the power cord is arranged along the horizontal part and extends out through the cable outlet groove.

[0011] According to one embodiment of the present invention, the lower surface of the upper cover is provided with a wire pressing rib, the wire pressing rib is close to the wire outlet groove, and the end of the wire pressing rib abuts against the power cord.

[0012] According to one embodiment of the present invention, a first mounting position and a second mounting position are provided on the outer wall surface of the base. The first mounting position and the second mounting position are arranged at different positions on the outer wall surface of the base to adapt to different mounting structures.

[0013] This utility model also proposes an air curtain device, including a cyclone lower cover, an air curtain fan, and the negative ion module as described above. The cyclone lower cover is provided with an air duct, and the negative ion module is installed on the cyclone lower cover. Part of the negative ion module is located inside the air duct, and the other part is located outside the air duct. The air curtain fan is installed on the cyclone lower cover, and the air outlet side of the air curtain fan faces the air duct.

[0014] This invention's negative ion module achieves a stable connection between the top cover and the base through the cooperation of a limiting structure and the inner wall of the mounting cavity, eliminating the need for screws or clips. This design simplifies the assembly process and improves production efficiency. Since no additional connectors are required, material and warehousing costs are reduced. The tight fit between the limiting structure and the inner wall of the mounting cavity eliminates assembly gaps, effectively preventing wobbling or misalignment between the top cover and the base. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is a schematic diagram of the negative ion module of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the upper cover in this utility model;

[0018] Figure 3 This is a schematic diagram of the base structure in this utility model;

[0019] Figure 4This is a cross-sectional view of the negative ion module of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the air curtain device of this utility model;

[0021] Figure 6 This is a schematic diagram of the installation of the universal negative ion module on the lower cover of the cyclone in this utility model;

[0022] Figure 7 for Figure 6 A magnified view of a section at point A in the middle;

[0023] Figure 8 This is a schematic diagram of the structure of one embodiment of the cyclone lower cover of this utility model;

[0024] Figure 9 for Figure 8 A magnified view of a section at point B in the middle;

[0025] Figure 10 This is a schematic diagram of the installation of the universal negative ion module in this utility model on another type of cyclone lower cover;

[0026] Figure 11 for Figure 10 A magnified view of a section at point C;

[0027] Figure 12 This is a schematic diagram of another embodiment of the cyclone lower cover of this utility model;

[0028] Figure 13 for Figure 12 A magnified view of a section at point D.

[0029] Explanation of icon numbers:

[0030] 20 negative ion module 21 Mounting base 26 base 22 negative ion generator 221 negative ion emitter 222 power cord 211 Mounting cavity 212 Cable tray 274 Thread reinforcement 28 Limiting structure 281 Limiting ribs 282 Fixed protrusion 283 Guide slope 284 Positioning ribs 263 Positioning groove 213 First installation position 214 Second installation position 11 Air duct 10 Cyclone lower cover 16 Second fixed protrusion 30 Air curtain fan 13 Mounting slot 14 First fixed protrusion 15 Connecting ribs 27 Top cover

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] This utility model proposes a negative ion module 20.

[0036] In the embodiments of this utility model, such as Figures 1 to 4 As shown, the negative ion module 20 includes a mounting base 21 and a negative ion generator 22; the mounting base 21 includes a base 26 and a top cover 27. The base 26 has an upward-facing mounting cavity 211. The top cover 27 covers the top opening of the base 26. A limiting structure 28 protrudes from the side of the top cover 27 facing the mounting cavity 211. The limiting structure 28 cooperates with the inner wall of the mounting cavity 211 to prevent the top cover 27 from detaching from the base 26; the negative ion generator 22 is installed in the mounting cavity 211.

[0037] In this embodiment, the mounting base 21 refers to a structure composed of a base 26 and a top cover 27. The base 26 has an upward-facing mounting cavity 211, and the top cover 27 covers the top opening of the base 26. Specifically, the base 26 and the top cover 27 can be manufactured using injection molding. The mounting cavity 211 is used to accommodate the negative ion generator 22, and the base 26 and the top cover 27 are connected by physical constraints. The limiting structure 28 refers to a protruding structure provided on the side of the top cover 27 facing the mounting cavity 211. Specifically, it can be a fixing protrusion 282 or a limiting rib 281 that matches the shape of the inner wall of the mounting cavity 211, which limits the displacement of the top cover 27 through mechanical interference. The contact area between the limiting structure 28 and the inner wall of the mounting cavity 211 can be designed as continuous surface contact or intermittent point contact. The limiting structure 28 can be a continuous protrusion 282 extending along the edge of the top cover 27, or it can be multiple intermittently distributed protrusions. The outer contour of the limiting structure 28 is adapted to the inner wall contour of the mounting cavity 211 to ensure a tight fit during insertion.

[0038] The physical interference between the limiting structure 28 and the inner wall of the mounting cavity 211 replaces the traditional screw or snap-fit ​​connection method. The limiting structure 28 directly uses the structure of the base 26 itself to fix the top cover 27, which avoids the complexity of the assembly process and the increase in the number of parts caused by screw connection, and eliminates the assembly gap and easy wear defects of snap-fit ​​structure. At the same time, the pressure distribution of the contact surface between the limiting structure 28 and the mounting cavity 211 improves the connection stability.

[0039] The negative ion generator 22 is installed in the mounting cavity 211. When assembling the negative ion module 20, first place the negative ion generator 22 into the mounting cavity 211 of the base 26 to ensure its stable positioning. Then, align the top cover 27 with the top opening of the base 26, so that the limiting structure 28 is aligned with the inner wall of the mounting cavity 211. Gently press the top cover 27 to insert the limiting structure 28 into the mounting cavity 211. Due to the slight interference between the limiting structure 28 and the inner wall of the mounting cavity 211, some resistance will be generated during insertion. Continue to apply uniform pressure until the top cover 27 is fully in place and forms a tight fit with the base 26.

[0040] During use, the friction and interference between the limiting structure 28 and the inner wall of the mounting cavity 211 work together to prevent the top cover 27 from shifting or detaching from the base 26. When disassembly is required, the top cover 27 can be removed from the base 26 by using appropriate tools or manual operation to overcome friction, thus achieving a detachable design.

[0041] The fit between the limiting structure 28 and the inner wall of the mounting cavity 211 achieves a secure connection between the top cover 27 and the base 26, eliminating the need for screws or clips. This design simplifies the assembly process and improves production efficiency. The elimination of additional connectors reduces material and warehousing costs. The tight fit between the limiting structure 28 and the inner wall of the mounting cavity 211 eliminates assembly gaps, effectively preventing wobbling or misalignment between the top cover 27 and the base 26.

[0042] The negative ion module 20 of this utility model, such as Figure 2 As shown, the limiting structure 28 includes a fixing protrusion 282, which extends at least partially along the length of the base 26 and engages with the inner wall of the mounting cavity 211. The fixing protrusion 282 can be disposed on both sides of the upper cover 27 facing the mounting cavity 211, forming a symmetrically distributed double protrusion structure.

[0043] The fixing protrusion 282 forms a continuous constraint along the length of the base 26, dispersing external forces by increasing the contact area. When the top cover 27 is subjected to lateral vibration, the contact surface between the fixing protrusion 282 and the inner wall of the mounting cavity 211 generates a reverse frictional force. The strip structure of the fixing protrusion 282 also improves its bending resistance by increasing its own moment of inertia. This design effectively prevents relative displacement and loosening of the top cover 27 along the length of the base 26. At the same time, the extended fixing protrusion 282 simplifies the assembly process, reduces alignment difficulty, and makes the connection between the top cover 27 and the base 26 tighter. In addition, the structure of the fixing protrusion 282 enhances the overall strength of the limiting structure 28, improves its resistance to deformation, and thus extends the service life of the negative ion module 20.

[0044] The negative ion module 20 of this utility model, such as Figure 2 As shown, the extension shape of the fixing protrusion 282 is adapted to the opening shape of the mounting cavity 211. The extension shape of the fixing protrusion 282 is configured to complement the contour of the opening of the mounting cavity 211. For example, when the opening of the mounting cavity 211 is rectangular, the fixing protrusion 282 extends circumferentially along the opening to form a rectangular frame structure; when the opening of the mounting cavity 211 is arc-shaped, the fixing protrusion 282 correspondingly exhibits a curved extension shape. When there are chamfers or rounded corners at the edge of the opening of the mounting cavity 211, matching chamfers or rounded corners are simultaneously provided at the corners of the fixing protrusion 282.

[0045] The fixing protrusion 282 can extend along the contour line of the opening of the mounting cavity 211, forming a curve that matches the edge of the opening of the mounting cavity 211. This design allows the fixing protrusion 282 to fit tightly against the inner wall of the mounting cavity 211, increasing the contact area. During assembly, the fixing protrusion 282 forms a continuous or discontinuous contact area along the circumference of the opening based on its extended shape and the fit with the opening of the mounting cavity 211.

[0046] The above technical solution increases the contact area between the fixing protrusion 282 and the inner wall of the mounting cavity 211, improving the stability of the limiting structure 28. The adaptive design of the fixing protrusion 282 and the opening shape of the mounting cavity 211 reduces deviations during assembly and avoids localized stress concentration. Because the fixing protrusion 282 fits better against the inner wall of the mounting cavity 211, the connection between the top cover 27 and the base 26 is tighter, reducing the risk of vibration and loosening.

[0047] The negative ion module 20 of this utility model, such as Figure 2 As shown, the limiting structure 28 also includes a plurality of limiting ribs 281 connected to the fixed rib 282. The plurality of limiting ribs 281 are spaced apart along the extension direction of the fixed rib 282, and the plurality of limiting ribs 281 clamp the inner wall of the mounting cavity 211.

[0048] Multiple limiting ribs 281 form discrete support points along the length of the fixed rib 282, dispersing the originally continuous linear contact pressure into multiple local contact areas. Under vibration conditions, each limiting rib 281 independently undergoes slight elastic deformation, absorbing impact energy and suppressing the accumulation of displacement of the upper cover 27. The spaced arrangement of the limiting ribs 281 allows for local dimensional deviations between the mounting cavity 211 and the limiting structure 28, which are compensated for by the independent deformation of each rib, preventing overall assembly failure. The fixed rib 282, as the main load-bearing structure, together with the limiting ribs 281, forms a multi-level constraint system, providing torsional stiffness along the length of the base 26 and maintaining a stable clamping force in the vertical direction.

[0049] By adding multiple limiting ribs 281 to the fixed protrusion 282, the original single linear contact is transformed into multiple discrete contact points, resulting in a more uniform stress distribution on the inner wall of the mounting cavity 211. The clamping fit between the limiting ribs 281 and the inner wall of the mounting cavity 211 forms a multi-level constraint, increasing the torsional resistance of the fixed protrusion 282 in the length direction and dispersing the assembly stress through discrete contact points. The elastic clamping force generated by the independent deformation of each limiting rib 281 compensates for the dimensional tolerances between the mounting cavity 211 and the limiting structure 28, ensuring the tightness of the connection between the upper cover 27 and the base 26 under dynamic working conditions. This structural design effectively improves the connection stability between the upper cover 27 and the base 26, reduces the small displacements caused by vibration or external impact, and overcomes the defects of insufficient connection stability in the prior art.

[0050] The negative ion module 20 of this utility model, such as Figure 2 As shown, the limiting rib 281 has a guide slope 283, which is inclined toward the inner wall of the mounting cavity 211. The guide slope 283 is used to reduce the resistance of the limiting rib 281 when it passes through the opening of the mounting cavity 211.

[0051] The guide ramp 283 can be configured as an inclined surface that forms a non-perpendicular contact with the edge of the opening of the mounting cavity 211, with an inclination angle ranging from 30 to 60 degrees. During installation, when the guide ramp 283 contacts the edge of the opening of the mounting cavity 211, the ramp structure causes the limiting rib 281 to undergo lateral deformation, preventing the front end of the limiting rib 281 from directly impacting the edge of the opening of the mounting cavity 211. As the top cover 27 continues to press down, the ramp slides along the edge of the opening of the mounting cavity 211, and the limiting rib 281 gradually enters the interior of the mounting cavity 211. During this process, the ramp converts the contact force originally perpendicular to the installation direction into a tangential component along the ramp direction, effectively reducing the normal pressure on the contact surface and thus reducing frictional resistance. When the limiting rib 281 is fully inserted into the mounting cavity 211, the non-rammed portion of the limiting rib 281 engages with the inner wall of the mounting cavity 211, maintaining the fixed state of the top cover 27 and the base 26. Therefore, this structure ensures the limiting effect while avoiding the deformation of the limiting rib 281 or the wear of the opening of the mounting cavity 211 due to excessive resistance during installation.

[0052] The above technical solution reduces the resistance of the limiting rib 281 when passing through the opening of the mounting cavity 211, allowing the top cover 27 to be installed onto the base 26 more smoothly. The guide slope 283 transforms the resistance originally perpendicular to the installation direction into a guiding force in the inclined direction, reducing friction between the limiting rib 281 and the opening of the mounting cavity 211, and avoiding deformation of the limiting rib 281 or wear of the opening of the mounting cavity 211 due to excessive resistance. At the same time, this design also ensures that the limiting rib 281 can ultimately be stably clamped to the inner wall of the mounting cavity 211, improving the reliability and durability of the connection between the top cover 27 and the base 26.

[0053] The negative ion module 20 of this utility model, such as Figure 2 As shown, the limiting structure 28 also includes a positioning rib 284 connected to the fixing rib 282, and a positioning groove 263 is recessed on the inner wall of the mounting cavity 211, with the positioning rib 284 and the positioning groove 263 being positioned and engaged.

[0054] The positioning rib 284 can be configured as a strip-shaped protrusion perpendicular to the extension direction of the fixed rib 282. The connection method between the positioning rib 284 and the fixed rib 282 can be integral molding or separate connection. The linear constraint formed by the fixed rib 282 extending along the width direction of the base 26, together with the transverse constraint formed by the positioning rib 284 perpendicular to the width direction, constitutes a multi-dimensional limiting frame.

[0055] The positioning rib 284 can be located at the end or middle of the fixing rib 282, and its shape can be cylindrical, square, or other geometric shapes. The positioning groove 263 is recessed on the inner wall of the mounting cavity 211 corresponding to the position of the positioning rib 284, and its shape matches the positioning rib 284. During assembly, when the limiting structure 28 of the upper cover 27 is inserted into the mounting cavity 211 of the base 26, the positioning rib 284 is simultaneously inserted into the positioning groove 263. The inner wall of the positioning groove 263 contacts the side of the positioning rib 284, restricting the lateral displacement of the upper cover 27 in the length direction.

[0056] By adding a positioning rib 284 that engages with the positioning groove 263 within the mounting cavity 211, precise locking of the relative position between the upper cover 27 and the base 26 is achieved. The positioning rib 284, as an extension of the limiting structure 28, connects with the fixing rib 282 to form an integral limiting frame. After embedding into the positioning groove 263 in the mounting cavity 211, it eliminates the risk of lateral or rotational displacement caused by the unidirectional limiting of the fixing rib 282. The positioning groove 263, located on its inner wall, provides a constraint space matching the shape of the positioning rib 284, allowing the upper cover 27 to achieve multi-dimensional positioning during assembly through the engagement of the rib and the groove, thereby enhancing the structural stability after assembly. Furthermore, the engagement of the positioning rib 284 and the groove does not rely on external fasteners, simplifying the assembly process and avoiding wear caused by repeated disassembly and assembly, thus improving the durability and reliability of the limiting structure 28.

[0057] The negative ion module 20 of this utility model, such as Figure 1 and Figure 4 As shown, the base 26 is provided with a cable outlet groove 212 communicating with the mounting cavity 211. The mounting cavity 211 includes a horizontal part and a vertical part. The negative ion generator 22 includes a negative ion emitting head 221 and a power cord 222 connected to each other. The negative ion emitting head 221 extends out of the mounting cavity 211 through the vertical part, and the power cord 222 is arranged along the horizontal part and extends out through the cable outlet groove 212.

[0058] The horizontal portion can be configured as a flat channel extending along the length of the mounting base 21 to accommodate the power cord 222; the vertical portion can be configured as a cylindrical channel perpendicular to the horizontal portion to guide the negative ion emitter 221 to extend vertically. The opening direction of the cable outlet groove 212 is consistent with the extension direction of the horizontal portion; for example, when the horizontal portion extends in the left-right direction, the opening of the cable outlet groove 212 faces rearward. The negative ion emitter 221 is assembled within the vertical extension section, and its emitting end passes through the bottom through hole of the mounting base 21 along the axial path of the vertical extension section, with the periphery of the emitting end forming a clearance fit with the inner wall of the through hole. The power cord 222 is led out from the bottom of the negative ion emitter 221 and laid along the extension direction of the horizontal portion, passing through the cable outlet groove 212 at the end of the horizontal portion to form a straight cable outlet path.

[0059] The above technical solution effectively avoids axial displacement of the negative ion emitter 221 during assembly, ensuring that the emitter always extends from the mounting cavity 211 in a predetermined vertical direction. Simultaneously, the directional guidance of the horizontal extension section ensures that the power cord 222 maintains a straight extension during its exit, eliminating bending stress caused by spatial path intersections. The horizontally and vertically partitioned cavity structure ensures that the installation and positioning of the negative ion emitter 221 and the layout of the power cord 222 do not interfere with each other, guaranteeing accurate orientation of the negative ion emitter and reducing the risk of insulation damage to the power cord 222 due to bending and friction.

[0060] The negative ion module 20 of this utility model, such as Figure 2 and Figure 4 As shown, a wire-pressing rib 274 protrudes from the lower surface of the upper cover 27. The wire-pressing rib 274 is close to the cable outlet groove 212, and its end abuts against the power cord 222. During installation, the power cord 222 runs along the horizontal portion of the mounting cavity 211 and extends outward through the cable outlet groove 212. When the upper cover 27 is closed, the end of the wire-pressing rib 274 directly presses against the surface of the power cord 222, forming a constraint force perpendicular to the axial direction of the power cord 222. This pressure causes a slight deformation of the surface of the power cord 222, increasing the static friction between it and the wire-pressing rib 274. Because the wire-pressing rib 274 is close to the edge of the cable outlet groove 212, when the power cord 222 is subjected to external tension, the tension is decomposed into the vertical pressure at the wire-pressing rib 274 and the horizontal reaction force of the wall of the mounting cavity 211, preventing the cord from slipping.

[0061] The power cord 222 is subjected to uniform radial pressure by the arc-shaped end of the wire clamping rib 274 in the cable outlet area 212, which effectively restricts its axial displacement and radial sway. When subjected to external vibration or cable pulling, the elastic deformation of the wire clamping rib 274 can buffer the impact of external force, avoid frictional damage between the power cord 222 and the edge of the cable outlet 212, and maintain a stable contact between the conductive core and the connection terminal.

[0062] When the negative ion module 20 is used in the air curtain device, it is specifically installed inside the cyclone lower cover 10 of the air curtain device. However, the installation structure for installing the negative ion module 20 on different models of cyclone lower covers 10 is different, which makes it impossible for the same negative ion module 20 to be installed on different models of cyclone lower covers 10.

[0063] The negative ion module 20 of this utility model, such as Figure 1 As shown, the outer wall of the base 26 is provided with a first mounting position 213 and a second mounting position 214. The first mounting position 213 and the second mounting position 214 are set at different positions on the outer wall of the base 26 to adapt to different mounting structures.

[0064] The first mounting position 213 and the second mounting position 214 refer to two physical connection parts set on the outer surface of the base 26. Specifically, they can be implemented in the form of slots, grooves or threaded holes. By setting two mounting positions in different spatial locations, the mounting base 21 can be compatible with the installation structure of different models of equipment at the same time.

[0065] By setting a first mounting position 213 and a second mounting position 214 with different spatial positions on the outer wall of a single base 26, the same negative ion module 20 can be adapted to various device structures by selecting different mounting positions, eliminating the problem that the negative ion module 20 cannot be used universally due to differences in installation structure, thereby reducing the production cost for manufacturers to develop corresponding negative ion modules 20 separately for different devices.

[0066] During installation, the first mounting position 213 or the second mounting position 214 can be selected for fixation depending on the mounting structure of the cyclone lower cover 10. The staggered layout of the first mounting position 213 and the second mounting position 214 allows a single negative ion module 20 to match the differentiated mounting structures of different models of cyclone lower covers 10. The spatial distribution design of different mounting positions allows the negative ion module 20 to be adapted for installation in different devices simply by selecting the corresponding mounting position, while maintaining the main structure.

[0067] Through the above solution, this application achieves the goal of adapting the same negative ion module 20 to different models of cyclone lower cover 10 mounting structures. By setting two different mounting positions on the outer wall of the mounting base 21, a single negative ion module 20 can flexibly match different installation requirements, avoiding the problem of developing a separate negative ion module 20 for each mounting structure. This design greatly reduces production costs and the complexity of mold development, production line switching, and parts inventory management. At the same time, the modular design improves the product's versatility and interchangeability, simplifies the production process, and improves production efficiency. In addition, the design of the universal negative ion module 20 also facilitates after-sales maintenance, reduces the difficulty of spare parts replacement, and helps improve the consistency of user experience.

[0068] like Figure 5 As shown, this utility model also proposes an air curtain device, which includes a cyclone lower cover 10, an air curtain fan 30, and a negative ion module 20 as described above. The specific structure of the negative ion module 20 is as described in the above embodiments. Since this air curtain device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. Among them, the cyclone lower cover 10 is provided with an air duct 11, the negative ion module 20 is installed on the cyclone lower cover 10, with one part of the negative ion module 20 located inside the air duct 11 and the other part located outside the air duct 11; the air curtain fan 30 is installed on the cyclone lower cover 10, with the air outlet side of the air curtain fan 30 facing the air duct 11.

[0069] The cyclone lower cover 10 has two models: a first cyclone lower cover 10 and a second cyclone lower cover 10. The first cyclone lower cover 10 has a first mounting structure located outside the air duct 11, and the second cyclone lower cover 10 has a second mounting structure located outside the air duct 11. When the universal negative ion module 20 is installed on the first cyclone lower cover 10, the first mounting position 213 is adapted to the first mounting structure; when the universal negative ion module 20 is installed on the second cyclone lower cover 10, the second mounting position 214 is adapted to the second mounting structure.

[0070] like Figures 6 to 13 As shown, both the first cyclone lower cover 10 and the second cyclone lower cover 10 are provided with mounting grooves 13 that are adjacent to and interconnected with the air duct 11. The first mounting structure and the second mounting structure are respectively located in the corresponding mounting grooves 13. When the negative ion module 20 is installed on the cyclone lower cover 10, the part of the negative ion module 20 located outside the air duct 11 is installed in the mounting groove 13.

[0071] The outer wall of the mounting base 21 is provided with a slot and a slide groove, which are located at different positions on the outer wall of the mounting base 21. The slot forms a first mounting position 213, and the slide groove forms a second mounting position 214. The positions of the slot and the slide groove are designed to be mutually non-interfering; for example, the slot is located in the middle area of ​​the outer wall of the mounting base 21, and the slide groove is located in the rear area. The positions of the slot and the slide groove are spatially misaligned with the cable outlet groove 212 of the mounting cavity 211 to avoid interference with the installation operation caused by the arrangement of the power cord 222. The slot can be used for snap-fit ​​installation, while the slide groove can be used for sliding installation.

[0072] By providing a slot and a groove on the outer wall of the mounting base 21, forming a first mounting position 213 and a second mounting position 214 respectively, two specific adaptation methods are provided for different installation structures. The slot design allows for fixing of the installation structure through a snap-fit ​​method, while the groove design supports sliding installation. The different positions of the two further expand the adaptation range of the mounting base 21. This design clarifies the physical form of the mounting position, enhances the flexibility and reliability of installation, and thus solves the adaptation problem of the universal negative ion module 20 in different installation scenarios. Therefore, the solution of this application achieves fast and reliable installation adaptation, improving the practicality and versatility of the universal negative ion module 20.

[0073] In conjunction with the above-described embodiment of the first cyclone lower cover 10, such as Figures 7 to 9As shown, the mounting groove 13 of the first cyclone lower cover 10 is provided with two opposing first fixing protrusions 14. When the negative ion module 20 is installed on the first cyclone lower cover 10, the negative ion module 20 is located between the two first fixing protrusions 14 in the mounting groove 13. The opposite side walls of the mounting base 21 are provided with slots (i.e., first mounting positions 213). The two first fixing protrusions 14 are respectively engaged with the two slots (i.e., first mounting positions 213) to realize the fixed installation of the negative ion module 20 on the first cyclone lower cover 10.

[0074] In conjunction with the above-described embodiment of the second cyclone lower cover 10, such as Figures 11 to 13 As shown, the mounting groove 13 of the second cyclone lower cover 10 has a connecting rib 15 protruding from its groove wall. The connecting rib 15 extends in a U-shape. The shape of the sliding groove (i.e., the second mounting position 214) is adapted to the connecting rib 15. When the negative ion module 20 is installed in the mounting groove 13 from top to bottom, the connecting rib 15 cooperates with the sliding groove (i.e., the second mounting position 214) to achieve the fixed installation of the negative ion module 20 on the second cyclone lower cover 10.

[0075] A third mounting position is also provided on the outer wall of the mounting base 21. The third mounting position is a universal mounting position and is used in conjunction with the first mounting position 213 or the second mounting position 214. The third mounting position can be set as a snap-fit ​​position. During the installation of the negative ion module 20, the first mounting position 213 or the second mounting position 214 provides the basic positioning function, while the third mounting position can increase the fixed connection position between the mounting base 21 and the cyclone lower cover 10, thereby improving the installation stability of the negative ion module 20 on two different models of cyclone lower covers 10.

[0076] The third mounting position, serving as a universal mounting position, can be flexibly combined with the first mounting position 213 or the second mounting position 214 to meet complex installation needs. This design enhances the connection strength between the negative ion module 20 and the external structure, expanding the adaptability of a single negative ion module 20 to different installation scenarios. Through optimized spatial layout between mounting positions, a balance of mechanical distribution is achieved during installation, avoiding stability issues caused by stress concentration at a single mounting point. Furthermore, the standardized design of the universal mounting position improves the versatility of the negative ion module 20 on different models of cyclone lower covers 10, reducing production costs.

[0077] Combining the above embodiments of the first cyclone lower cover 10 and the second cyclone lower cover 10, such as Figures 7 to 13As shown, both the first and second cyclone lower covers 10 and the mounting groove 13 of the second cyclone lower cover 10 are provided with two second fixing protrusions 16. The mounting base 21 is located between the two second fixing protrusions 16, regardless of whether it is installed on the first or second cyclone lower cover 10. The opposite side walls of the mounting base 21 are provided with third mounting positions. The two second fixing protrusions 16 are respectively engaged and fixed with the two third mounting positions to improve the installation stability of the negative ion module 20 on the two types of cyclone lower covers 10.

[0078] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A negative ion module, characterized in that, include: Mounting base (21), the mounting base (21) includes a base (26) and a top cover (27), the base (26) has an upward-facing mounting cavity (211), the top cover (27) covers the top opening of the base (26), the side of the top cover (27) facing the mounting cavity (211) is provided with a limiting structure (28), the limiting structure (28) cooperates with the inner wall of the mounting cavity (211) to restrict the top cover (27) from detaching from the base (26); A negative ion generator (22) is installed in the mounting cavity (211).

2. The negative ion module as described in claim 1, characterized in that, The limiting structure (28) includes a fixing protrusion (282) that extends at least partially along the length of the base (26) and engages with the inner wall of the mounting cavity (211).

3. The negative ion module as described in claim 2, characterized in that, The extended shape of the fixed protrusion (282) is adapted to the opening shape of the mounting cavity (211).

4. The negative ion module as described in claim 2, characterized in that, The limiting structure (28) also includes a plurality of limiting ribs (281) connected to the fixed protrusion (282). The plurality of limiting ribs (281) are spaced apart along the extension direction of the fixed protrusion (282), and the plurality of limiting ribs (281) clamp the inner wall of the mounting cavity (211).

5. The negative ion module as described in claim 4, characterized in that, The limiting rib (281) has a guide slope (283) that is inclined toward the inner wall of the mounting cavity (211). The guide slope (283) is used to reduce the resistance of the limiting rib (281) when it passes through the opening of the mounting cavity (211).

6. The negative ion module as described in claim 2, characterized in that, The limiting structure (28) also includes a positioning rib (284) connected to the fixing rib (282), and the inner wall of the mounting cavity (211) is recessed with a positioning groove (263), and the positioning rib (284) and the positioning groove (263) are positioned and engaged.

7. The negative ion module as described in claim 1, characterized in that, The base (26) is provided with a cable outlet groove (212) communicating with the mounting cavity (211). The mounting cavity (211) includes a horizontal part and a vertical part. The negative ion generator (22) includes a negative ion emitter (221) and a power cord (222) connected to each other. The negative ion emitter (221) extends out of the mounting cavity (211) through the vertical part. The power cord (222) is arranged along the horizontal part and extends out through the cable outlet groove (212).

8. The negative ion module as described in claim 7, characterized in that, The lower surface of the upper cover (27) is provided with a wire pressing rib (274), the wire pressing rib (274) is close to the wire outlet groove (212), and the end of the wire pressing rib (274) abuts against the power cord (222).

9. The negative ion module as described in claim 1, characterized in that, The outer wall of the base (26) is provided with a first mounting position (213) and a second mounting position (214). The first mounting position (213) and the second mounting position (214) are set at different positions on the outer wall of the base (26) to adapt to different mounting structures.

10. An air curtain device, characterized in that, The device includes a cyclone lower cover (10), an air curtain fan (30), and a negative ion module (20) as described in any one of claims 1 to 9. The cyclone lower cover (10) is provided with an air duct (11). The negative ion module (20) is installed on the cyclone lower cover (10), with one part of the negative ion module (20) located inside the air duct (11) and the other part located outside the air duct (11). The air curtain fan (30) is installed on the cyclone lower cover (10), with the air outlet side of the air curtain fan (30) facing the air duct (11).

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