Anti-counterfeiting protection structure of filter screen of air purifier

Abstract

The invention provides an anti-counterfeiting protection structure of an air purifier filter screen, which comprises a machine body structure, a travel switch, a cover plate and a filter screen, one end of the filter screen is provided with an identification part, and the cover plate is provided with an insertion opening. The anti-counterfeiting protection structure of the air purifier filter screen is provided with the identification part on the filter screen and the travel switch on the machine body structure; the identification part corresponds to the slot in the cover plate, and the identification part can be in contact with the travel switch only after being inserted into the slot, so that the travel switch is turned on or turned off to unlock the air purifier, and the problem that a traditional air purifier does not have an identity verification or anti-counterfeiting identification function is solved; and when a user uses a filter screen structure which is not matched with the air purifier, the filtering effect is poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of anti-fake protection structure, and particularly relates to an anti-fake protection structure of an air purifier filter screen. BACKGROUND

[0002] With the increasingly serious air pollution problem, air purifiers have become common equipment in families, offices and industrial environments. Its core function relies on the high-efficiency filtration of particulate matter, harmful gases and microorganisms in the air by the filter screen, so the quality and adaptability of the filter screen directly determine the purification effect and the stability of the equipment operation.

[0003] The filter screen mounting structure of the traditional air purifier is usually fixed only by a simple buckle or slot, without any identity verification or anti-fake identification function. This leads to a large number of counterfeit and inferior filter screens circulating in the market, and the filter material may not meet the standard, such as false labeling of HEPA filter screen grade, insufficient activated carbon content, or even the use of inferior materials such as harmful substances containing glass fibers, which directly threatens the health of users. Different models of air purifiers have strict requirements on the size, wind resistance and filtration efficiency of the filter screen, but the traditional structure cannot effectively prevent users from misinstalling mismatched filter screens (such as size deviation leading to air leakage, and excessive wind resistance causing motor overload). Such misoperation may cause equipment failure (such as motor burnout), sudden decrease in purification efficiency (such as PM2.5 removal rate lower than the nominal value), and even secondary pollution (such as release of pollutants due to filter screen damage).

[0004] Therefore, the present application provides an anti-fake protection structure of an air purifier filter screen, which realizes automatic identification and installation blocking of the authenticity and model of the filter screen through a physical-electronic dual verification mechanism of a travel switch and an identification part, so as to solve the problem of poor filtering effect when a user uses a filter screen structure that is not matched with an air purifier. SUMMARY

[0005] Therefore, it is necessary to provide an anti-fake protection structure of an air purifier filter screen to solve the problem of poor filtering effect when a user uses a filter screen structure that is not matched with an air purifier.

[0006] Embodiments of the present application provide an anti-fake protection structure of an air purifier filter screen, comprising:

[0007] a machine body structure;

[0008] a travel switch, which is arranged on the machine body structure;

[0009] a cover plate, which is arranged on the machine body structure, the travel switch is located between the machine body structure and the cover plate, and the cover plate is provided with a socket;

[0010] The filter screen is provided with an identification part at one end, the travel switch corresponds to the identification part, and the cover plate allows the identification part to pass through the insertion slot to open or close the travel switch.

[0011] In at least one embodiment of the present application, the insertion slot is provided with a first guide surface and a second guide surface symmetrically arranged with the first guide surface away from one side of the travel switch, and the included angle a between the first guide surface and the second guide surface satisfies the relationship: 22°<a<24°.

[0012] In at least one embodiment of the present application, the anti-fake protection structure of the air purifier filter screen further comprises a main control circuit board, the main control circuit board is arranged in the machine body structure, and the travel switch is electrically connected with the main control circuit board.

[0013] In at least one embodiment of the present application, the anti-fake protection structure of the air purifier filter screen further comprises an alarm module, the alarm module is arranged in the machine body structure, and the alarm module is electrically connected with the main control circuit board.

[0014] In at least one embodiment of the present application, the anti-fake protection structure of the air purifier filter screen further comprises a lower shell, the lower shell is arranged on the machine body structure, the cover plate and the filter screen are located between the lower shell and the machine body structure, and the lower shell allows the filter screen to enter and exit the lower shell.

[0015] In at least one embodiment of the present application, a plurality of ventilation holes are formed in the lower shell.

[0016] In at least one embodiment of the present application, the anti-fake protection structure of the air purifier filter screen further comprises a light shielding ring, and the light shielding ring is located between the lower shell and the machine body structure.

[0017] In at least one embodiment of the present application, the anti-fake protection structure of the air purifier filter screen further comprises a bottom cover, the bottom cover is arranged on the lower shell, and the bottom cover prevents the filter screen from entering and exiting the lower shell.

[0018] The anti-fake protection structure of the air purifier filter screen provided above solves the problem of poor filtering effect when the user uses the filter screen structure not matched with the air purifier by designing the identification part on the filter screen, arranging the travel switch on the machine body structure, and allowing the identification part to pass through the insertion slot on the cover plate to open or close the travel switch to unlock the air purifier, so as to solve the problem that the traditional air purifier does not have identity verification or anti-fake identification function. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure of the anti-fake protection structure of the air purifier filter screen is shown in the figure.

[0020] Figure 2 Structure exploded view of the anti-fake protection structure of the air purifier filter screen;

[0021] Figure 3 Structure exploded view of the anti-fake protection structure of the air purifier filter screen;

[0022] Figure 4 Structure perspective view of the anti-fake protection structure of the air purifier filter screen hiding the bottom cover and the filter screen;

[0023] Figure 5 Sectional view of the anti-fake protection structure of the air purifier filter screen;

[0024] Figure 6 B part of the enlarged view of Figure 5

[0025] Figure 7 Connection schematic diagram between the travel switch, the main control circuit board and the alarm module.

[0026] Main component symbol description

[0027] 100, the anti-fake protection structure of the air purifier filter screen; 1, the body structure; 2, the travel switch; 3, the cover plate; 31, the socket; 311, the first guide surface; 312, the second guide surface; 4, the filter screen; 41, the identification part; 5, the main control circuit board; 6, the alarm module; 7, the lower shell; 71, the ventilation hole; 8, the light shielding ring; 9, the bottom cover. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a middle component. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and the like used herein are for illustrative purposes only.

[0030] The embodiments of the present application provide an anti-fake protection structure of an air purifier filter screen, comprising:

[0031] The body structure;

[0032] The travel switch is provided on the body structure;

[0033] ​A cover plate 3 is arranged on the body structure 1, and the travel switch 2 is located between the body structure 1 and the cover plate 3. The cover plate 3 is provided with a socket 31.

[0034] A filter screen 4 is provided with an identification part 41 at one end. The travel switch 2 corresponds to the identification part 41. The cover plate 3 allows the identification part 41 to pass through the socket 31 to open or close the travel switch 2. The anti-fake protection structure of the air purifier filter screen provided by the above solves the problem of poor filtering effect when the user uses a filter screen structure that is not matched with the air purifier, because the traditional air purifier does not have an identity verification or anti-fake identification function.

[0035] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0036] Please refer to Figures 1-7 The embodiments of the present application provide an anti-fake protection structure 100 of an air purifier filter screen, which comprises:

[0037] A body structure 1.

[0038] A travel switch 2 is arranged on the body structure 1.

[0039] A cover plate 3 is arranged on the body structure 1, and the travel switch 2 is located between the body structure 1 and the cover plate 3. The cover plate 3 is provided with a socket 31.

[0040] A filter screen 4 is provided with an identification part 41 at one end. The travel switch 2 corresponds to the identification part 41. The cover plate 3 allows the identification part 41 to pass through the socket 31 to open or close the travel switch 2.

[0041] Specifically, the body structure 1 serves as the basic support frame of the entire anti-fake protection structure of the air purifier filter screen 4, provides mounting positions and fixing bases for other components, carries and protects various components inside, and ensures the stability and integrity of the entire structure. The body structure 1 provides stable structural support, so that other components can be orderly and accurately installed thereon, ensuring that the entire anti-fake protection structure will not be easily damaged or displaced due to vibration or external force during the operation of the air purifier, thereby ensuring the normal functioning of the structure.

[0042] The travel switch 2 is a key sensing component in the anti-fake protection structure, and is used to detect whether the filter screen 4 is correctly installed in place. By cooperating with the identification part 41 on the filter screen 4, when the identification part 41 touches the travel switch 2, a corresponding electrical signal is generated to judge the state of the filter screen 4. Compared with other detection methods, the travel switch 2 has the advantages of simple structure, high reliability, fast response speed, etc., and can quickly and accurately feedback the state information of the filter screen 4.

[0043] The cover plate 3 is arranged on the machine body structure 1, and serves to protect the travel switch 2 from being eroded by external dust, water vapor and other pollutants, and at the same time provides an operation channel for the identification part 41 of the filter screen 4. The design of the socket 31 on the cover plate 3 enables the identification part 41 of the filter screen 4 to smoothly pass through and interact with the travel switch 2. On the one hand, the cover plate 3 protects the travel switch 2 from external environmental factors, prolongs its service life, and improves the reliability of the entire anti-fake protection structure. On the other hand, by reasonably designing the socket 31, the user can conveniently install and replace the filter screen 4, while ensuring that only the filter screen 4 with the correct identification part 41 can touch the travel switch 2, thereby enhancing the anti-fake function. The filter screen 4 is the core filtering component of the air purifier, which is used to filter dust, pollen, bacteria and other pollutants in the air to improve air quality. The identification part 41 arranged at one end of the filter screen 4 is an important part of the anti-fake protection structure, which cooperates with the travel switch 2 to verify the authenticity and installation state of the filter screen 4. The filter screen 4 can effectively purify the air to provide a healthy and clean indoor environment for the user. The arrangement of the identification part 41 enables only the genuine filter screen 4 that meets the requirements to be recognized by the air purifier and work normally, preventing the use of fake and inferior filter screens 4, thereby protecting the filtering effect and service life of the air purifier, and also safeguarding the rights and interests of consumers.

[0044] Further, the user inserts the filter screen 4 with the identification part 41 into the designated position of the air purifier, so that the identification part 41 of the filter screen 4 is aligned with the socket 31 on the cover plate 3. With the insertion of the filter screen 4, the identification part 41 passes through the socket 31 and gradually approaches the travel switch 2. When the filter screen 4 is installed in place, the identification part 41 is in contact with the travel switch 2, and the travel switch 2 is touched. After the travel switch 2 is triggered, a corresponding electrical signal is generated, and the signal is transmitted to the main control circuit board 5 (if there is a main control circuit board 5) connected thereto. After receiving the signal of the travel switch 2, the main control circuit board 5 performs corresponding processing and judgment. If the identification part 41 touches the travel switch 2, it indicates that the filter screen 4 has been correctly installed and is genuine (assuming that the identification part 41 has anti-fake features), and the air purifier can start working normally; if the travel switch 2 is not triggered, it may indicate that the filter screen 4 is not installed in place or a fake and inferior filter screen 4 is used, and at this time the main control circuit board 5 can control the alarm module 6 (if there is an alarm module 6) to issue an alarm signal to remind the user to check the installation of the filter screen 4 or replace the genuine filter screen 4.

[0045] In a specific example, the insertion opening 31 has a first guide surface 311 and a second guide surface 312 symmetrically arranged with the first guide surface 311 on a side away from the travel switch 2, and an included angle a between the first guide surface 311 and the second guide surface 312 satisfies a relationship: 22° < a < 24°.

[0046] Specifically, a socket 31 is formed on the cover plate 3 of the anti-fake protection structure of the air purifier filter screen 4. The socket 31 is not a simple straight hole, but is specially designed on the side away from the travel switch 2. It has two guide surfaces, respectively named the first guide surface 311 and the second guide surface 312, and the two guide surfaces are symmetrically arranged, forming an included angle a between them. When the user installs the filter screen 4, the identification part 41 on the filter screen 4 needs to be inserted through the socket 31 on the cover plate 3, so that it corresponds to and triggers the travel switch 2. The first guide surface 311 and the second guide surface 312 exist to guide the identification part 41 of the filter screen 4 during the insertion process. Because they are symmetrically arranged, no matter which relative direction the user approaches the identification part 41 of the filter screen 4 to the socket 31, the identification part 41 can be smoothly guided into the interior of the socket 31 along the slope of the guide surface, reducing the jamming and deviation during the insertion process, and improving the convenience and accuracy of installation. Reasonable design of the guide surface can avoid the identification part 41 colliding with the edge of the socket 31 due to improper force or direction deviation when the user installs the filter screen 4, thereby protecting the identification part 41 and the socket 31 from being damaged, and prolonging the service life of the filter screen 4 and the cover plate 3. The included angle a between the first guide surface 311 and the second guide surface 312 satisfies the relationship 22° < a < 24°, which is the best angle range obtained through a large number of experiments and optimization design. If the first included angle a is too small, for example, less than 22°, the guide surface will become steep, and the resistance received by the identification part 41 during the insertion process will increase, increasing the difficulty of installation. The user may need to use more force to install the filter screen 4 in place, which not only reduces the user experience, but also may cause damage to the filter screen 4 or the cover plate 3 due to excessive force. If the included angle a is too large, for example, greater than 24°, although the guide surface will be smoother, making it easier to guide the identification part 41 to insert, it will cause the socket 31 to have a large opening. This not only increases the risk of dust, debris, and other objects entering the interior of the machine structure 1, affecting the normal operation of components such as the travel switch 2, but also may reduce the protective effect of the cover plate 3 on the internal structure. The appropriate guide surface angle and symmetric design enable the identification part 41 of the filter screen 4 to be quickly and accurately inserted into the socket 31, reducing the number of adjustments and attempts during the installation process, and greatly improving the user's efficiency in replacing the filter screen 4. By controlling the included angle a to be between 22° and 24°, the guiding effect of the guide surface is ensured, and the structure of the socket 31 has a certain strength and stability. During the insertion and removal of the filter screen 4, the socket 31 can withstand a certain external force without deformation or damage, ensuring the reliability of the entire anti-fake protection structure.

[0047] In a specific example, the anti-fake protection structure 100 of the air purifier filter screen further includes a main control circuit board 5, which is arranged in the machine structure 1, and the travel switch 2 is electrically connected with the main control circuit board 5.

[0048] In particular, the main control circuit board 5 is the core electronic control component in the anti-fake protection structure of the air purifier filter screen 4, which is equivalent to the "brain" of the entire system. The main control circuit board 5 integrates various electronic elements such as microprocessors (CPU), memories, various interface circuits, etc. These elements work together to control and manage various functions of the air purifier and play a key role in the anti-fake protection of the filter screen 4. The main control circuit board 5 is installed inside the machine structure 1 of the air purifier. The machine structure 1 provides a mounting space and a support frame for the various components of the air purifier, and the main control circuit board 5 is arranged therein. On the one hand, it can protect the main control circuit board 5 from external environmental interference and damage, such as preventing dust, water vapor, etc. from entering to affect the normal work of the circuit board; on the other hand, reasonable layout design can keep the main control circuit board 5 at a proper connection distance from other components, facilitating the laying of lines and the transmission of signals. The travel switch 2 is a commonly used mechanical-electrical conversion element, which is usually installed near the installation position of the filter screen 4 in the anti-fake protection structure of the air purifier filter screen 4. When the filter screen 4 is correctly installed in place, the specific components (such as protrusions, buckles, etc.) on the filter screen 4 will touch the travel switch 2, causing its state to change (for example, from an open state to a closed state, or from a closed state to an open state). The travel switch 2 is electrically connected to the corresponding interface on the main control circuit board 5 through wires, and this connection allows the state change of the travel switch 2 to be transmitted to the main control circuit board 5 in the form of an electrical signal. When the user installs the genuine filter screen 4 that meets the requirements into the air purifier, the identification part 41 on the filter screen 4 will accurately touch the travel switch 2. After the state of the travel switch 2 changes, an electrical signal is generated, which is transmitted to the main control circuit board 5 through the wires connected thereto. After receiving this signal, the microprocessor on the main control circuit board 5 will identify and process it. If the signal meets the pre-set trigger conditions of the genuine filter screen 4, the microprocessor will determine that the filter screen 4 is genuine and allow the air purifier to work normally, while it may perform some related operations according to the pre-set program, such as recording the use time of the filter screen 4, displaying the status of the filter screen 4, etc. Conversely, if a counterfeit filter screen 4 is installed, since its identification part 41 does not match the genuine one in shape, size, etc., it may not accurately touch the travel switch 2, or the triggered signal does not meet the pre-set conditions of the main control circuit board 5. At this time, the main control circuit board 5 will determine that the filter screen 4 is not genuine and take appropriate protective measures, such as prohibiting the start of the air purifier, issuing an alarm to prompt the user to replace the genuine filter screen 4, etc.

[0049] In a specific example, the anti-fake protection structure 100 of the air purifier filter screen further includes an alarm module 6, which is arranged in the machine structure and electrically connected to the main control circuit board 5.

[0050] Specifically, the alarm module 6 is usually composed of multiple elements capable of emitting alarm signals, common ones including sound alarm elements (such as a buzzer), light alarm elements (such as an LED indicator), or a combination of both. The buzzer can convey different alarm information through different frequencies and volumes of sound; the LED indicator can prompt the user about the status of the equipment through different states (such as flashing, constant lighting, etc.) and different colors (such as red for abnormal, green for normal). The alarm module 6 is installed in the body mechanism of the air purifier. The body mechanism provides a mounting space and support frame for the various components of the air purifier, and the alarm module 6 is arranged therein, which on the one hand can effectively protect it from damage caused by external collisions, dust erosion, etc., and on the other hand, a reasonable layout design can ensure that the alarm signals emitted by the alarm module 6 can be clearly conveyed to the user. For example, the LED indicator is installed at a position on the surface of the body that is easy to observe, and the buzzer is installed in an area with good sound propagation effect, ensuring that the user can promptly perceive the alarm information. The alarm module 6 is electrically connected to the main control circuit board 5 through wires. The main control circuit board 5, as the core control component of the air purifier, integrates multiple electronic elements such as microprocessors and memories, and can control and monitor various functions of the air purifier. The electrical connection between the alarm module 6 and the main control circuit board 5 allows the main control circuit board 5 to send control instructions to the alarm module 6 according to the preset program and the detected signals, thereby controlling the alarm module 6 to emit corresponding alarm signals. The main control circuit board 5 receives signals from detection elements such as the travel switch 2 in real time. The travel switch 2 is used to detect whether the filter screen 4 is correctly installed and whether it is an authentic filter screen 4. When the filter screen 4 is not installed correctly (such as not installed in place, or a non-compatible model of filter screen 4 is installed) or a counterfeit or substandard filter screen 4 is installed, the state of the travel switch 2 will change, and this change will be transmitted to the main control circuit board 5 in the form of an electrical signal. The microprocessor in the main control circuit board 5 analyzes and judges the received signals. If it is judged that there is an abnormal condition with the filter screen 4, such as non-authentic filter screen 4 installation or incorrect installation of the filter screen 4, the microprocessor will send control instructions to the alarm module 6 according to the preset program. After receiving the control instructions sent by the main control circuit board 5, the alarm module 6 emits corresponding alarm signals according to the requirements of the instructions. If it is a sound alarm, the buzzer will emit a sound of a specific frequency and volume; if it is a light alarm, the LED indicator will prompt the user that there is an abnormality with the filter screen 4 through flashing, constant lighting, or changing colors, etc.

[0051] In a specific example, the anti-counterfeiting protection structure 100 of the air purifier filter screen further includes a lower shell 7, which is arranged on the body structure 1, and the cover plate 3 and the filter screen 4 are located between the lower shell 7 and the body structure 1. The lower shell 7 allows the filter screen 4 to enter and exit the lower shell 7.

[0052] In particular, the lower shell 7 is an important component of the air purifier filter screen 4 anti-fake protection structure, which is usually made of plastic, metal and other materials with certain strength and durability. Its shape and size are customized according to the overall design of the air purifier and the specifications of the filter screen 4, mainly serving to contain and protect the filter screen 4 and cooperate with other components to achieve the anti-fake protection function. The lower shell 7 is installed on the body structure 1, and the installation method is usually a combination of buckle connection, screw fixing or both. The buckle connection has the characteristics of convenient installation and disassembly, and through the corresponding buckle structure on the lower shell 7 and the body structure 1, the lower shell 7 can be quickly fixed on the body; the screw fixing provides a more stable connection, which can ensure that the lower shell 7 will not loosen during the operation of the air purifier. In actual design, according to the specific requirements and use scenarios of the air purifier, appropriate installation methods or a combination of multiple installation methods can be selected to ensure the reliability and stability of the connection between the lower shell 7 and the body structure 1. The cover plate 3 and the filter screen 4 are located between the lower shell 7 and the body structure 1. The cover plate 3 is usually used to further protect the filter screen 4 from dust, debris and other direct falling on the filter screen 4, and also serves the purpose of aesthetics and sealing. The filter screen 4 is the core component of the air purifier, which is used to filter particulate matter, harmful gases and other pollutants in the air. The lower shell 7 and the body structure 1 together provide a relatively closed space for the cover plate 3 and the filter screen 4, protecting them from external environmental interference and damage. This layout helps to optimize the internal structure of the air purifier. The space formed by the lower shell 7 and the body structure 1 can guide the air flow, making the air pass through the filter screen 4 more efficiently and improving the purification efficiency. At the same time, the placement of the cover plate 3 and the filter screen 4 in this space also facilitates their installation, replacement and maintenance. The lower shell 7 allows the filter screen 4 to enter and exit, which is usually achieved by providing an opening or an openable door on the lower shell 7. The size and shape of the opening are matched with the specifications of the filter screen 4 to ensure that the filter screen 4 can be easily put in and taken out. The openable door can be installed on the lower shell 7 through hinge connection, sliding rail connection and other methods, making it easy for users to open and close. When replacing the filter screen 4, users can open the openable door on the lower shell 7 or pull the filter screen 4 out of the opening, remove the old filter screen 4, and then put the new filter screen 4 into the lower shell 7 in the correct direction and position. This design makes the replacement of the filter screen 4 more convenient and efficient, improving the user experience. The feature of allowing the filter screen 4 to enter and exit is closely related to the anti-fake protection function of the filter screen 4. During the process of the filter screen 4 entering and exiting the lower shell 7, the anti-fake detection device of the air purifier (such as the travel switch 2) can identify and detect the filter screen 4.The anti-counterfeiting detection device will only send a normal signal and allow the air purifier to work properly when a genuine filter 4 is installed and installed correctly. If a counterfeit or substandard filter 4 is installed or the filter 4 is installed incorrectly, the anti-counterfeiting detection device will trigger the alarm module 6 to remind the user to replace the filter 4, thus achieving anti-counterfeiting protection for the filter 4.

[0053] In one specific example, the lower shell 7 is provided with a plurality of ventilation holes 71.

[0054] Specifically, when an air purifier is running, it needs to draw in air from the outside for purification. The ventilation holes 71 on the lower casing 7 serve as air intake channels, allowing outside air to smoothly enter the air purifier. After being drawn in through these ventilation holes 71, the air passes through purification components such as the filter 4, where particulate matter, harmful gases, bacteria, and other pollutants are filtered and removed, thus achieving the purpose of air purification. During operation, components such as the motor and circuit boards inside the air purifier generate heat. If this heat cannot be dissipated in time, it will cause the component temperature to rise, affecting its performance and lifespan, and may even lead to malfunctions. The ventilation holes 71 create air convection, carrying away the internal heat and playing a role in heat dissipation, ensuring the air purifier operates stably at a suitable temperature. During the operation of the air purifier, the intake and exhaust of air cause changes in internal air pressure. The ventilation holes 71 help maintain the pressure balance between the inside and outside of the air purifier, preventing damage to the device's structure due to excessive pressure differences, and also facilitating smooth airflow, improving purification efficiency. To ensure that air enters the air purifier evenly, the ventilation holes 71 are typically evenly distributed on the lower casing 7. This allows air from different locations to enter smoothly through the ventilation holes 71, avoiding situations where there is too much or too little air in certain areas, ensuring that the filter 4 can fully perform its purification function and improving the overall purification effect.

[0055] In one specific example, the anti-counterfeiting protection structure 100 of the air purifier filter also includes a light-shielding ring 8, which is located between the lower shell 7 and the body structure 1.

[0056] Specifically, the light-shielding ring 8 is a ring-shaped component with specific functions, usually made of materials such as plastic, rubber, etc. It has a certain flexibility and sealing property, and can be deformed appropriately according to the installation position and requirements to achieve good fitting and sealing effect. In the anti-fake protection structure 100 of the air purifier filter screen, the light-shielding ring 8 plays an important role, mainly for preventing light interference, enhancing sealing and assisting in achieving anti-fake function. The lower shell 7 and the body structure 1 are two important parts of the air purifier, and they need a suitable transition and connection between them. The light-shielding ring 8 is located between the two, which can play a buffering and bridging role, reducing the gap and shaking between the lower shell 7 and the body structure 1 during assembly, enhancing the stability and firmness of the whole structure. A relatively independent space is formed between the lower shell 7 and the body structure 1, and the light-shielding ring 8 can isolate this space from the outside to a certain extent. It can prevent dust, water vapor and other impurities from entering the space, protect the internal filter screen 4, anti-fake detection device and other components from pollution and damage, and prolong the service life of the air purifier. The light-shielding ring 8 is usually closely attached to the edge of the lower shell 7 and fixed on the lower shell 7 by buckle, adhesive or interference fit, etc. This matching method can ensure that the light-shielding ring 8 will not easily fall off during the installation and disassembly of the lower shell 7, and also can ensure the sealing between the lower shell 7 and the light-shielding ring 8, preventing air from leaking between the two, affecting the purification effect of the air purifier. When the light-shielding ring 8 is installed on the lower shell 7, with the assembly of the lower shell 7 and the body structure 1, the light-shielding ring 8 will be extruded with the corresponding part of the body structure 1, forming a good seal. The body structure 1 may be provided with a groove or protrusion matching the light-shielding ring 8 to enhance the sealing effect and the stability of assembly. This matching relationship can effectively prevent external light from entering the space between the lower shell 7 and the body structure 1, avoiding the interference of light on the internal elements such as anti-fake detection device.

[0057] In a specific example, the anti-fake protection structure 100 of the air purifier filter screen further comprises a bottom cover 9, which is arranged on the lower shell 7, and the bottom cover 9 prevents the filter screen 4 from entering and exiting the lower shell 7.

[0058] Specifically, the bottom cover 9 is a key component in the anti-fake protection structure of the air purifier filter screen 4, usually made of materials such as plastic, metal, etc. with certain strength and durability. It is plate-shaped or shell-shaped, matching the shape and size of the lower shell 7, and its main function is to close the opening of the lower shell 7, providing a relatively stable and closed installation environment for the filter screen 4.

[0059] The connection mode of the bottom cover 9 and the lower shell 7 has multiple modes, and the buckle connection is a common and convenient connection mode. The lower shell 7 is designed with corresponding buckle structures, such as protruding buckle blocks or buckle grooves, and the bottom cover 9 is designed with corresponding buckle matching parts, such as buckle holes or buckle hooks. During installation, the bottom cover 9 is only needed to be aligned with the lower shell 7, a certain pressure is applied, the buckles are embedded with each other, and the firm connection of the bottom cover 9 and the lower shell 7 is realized. This connection mode is convenient to disassemble, and is convenient for replacing and maintaining the filter screen 4. Screw fixation may be used to install the bottom cover 9 on the lower shell 7 for some air purifiers with high requirements for structural stability. Screw holes are pre-provided on the lower shell 7 and the bottom cover 9, a screwdriver is used to screw the screw into the screw hole, and the bottom cover 9 is tightly connected with the lower shell 7. The screw fixation mode is firm in connection and can withstand a large external force, but a tool is needed during disassembly, which is relatively troublesome. In some cases, the bottom cover 9 can also be pasted on the lower shell 7 by using adhesive. The adhesive connection can realize seamless connection, has good sealing performance, and can effectively prevent dust, water vapor and the like from entering the inside of the lower shell 7. However, once the adhesive connection is completed, the bottom cover 9 is difficult to disassemble, which is not conducive to the replacement of the filter screen 4 and the maintenance of the equipment. After the bottom cover 9 is arranged on the lower shell 7, the opening of the lower shell 7 is completely closed, forming a closed space. The filter screen 4 is usually installed in this space. Due to the blockage of the bottom cover 9, the filter screen 4 cannot fall out of the lower shell 7, and the unauthorized entry of the outside filter screen 4 into the inside of the lower shell 7 is also prevented. This physical blockage mode is simple and direct, and can effectively protect the installation position and state of the filter screen 4. The cooperation between the bottom cover 9 and the lower shell 7 limits the activity space of the filter screen 4. The filter screen 4 has certain installation position and direction requirements during installation. The existence of the bottom cover 9 can ensure that the filter screen 4 is fixed immovably at the correct position, avoiding the influence of the movement or shaking of the filter screen 4 on the purification effect of the air purifier and the accuracy of the anti-fake detection. Many air purifiers are provided with specific true and false marks on the filter screen 4, such as a two-dimensional code, an anti-fake chip and the like. The bottom cover 9 prevents the filter screen 4 from entering and leaving the lower shell 7, and can prevent these true and false marks from being tampered with or damaged by people. If the filter screen 4 can enter and leave the lower shell 7 at will, an illegal person may replace the true and false marks on the counterfeit filter screen 4 with the marks of the genuine product, thereby bypassing the anti-fake detection. The existence of the bottom cover 9 effectively eliminates this possibility, and guarantees the reliability of the true and false detection of the filter screen 4. The anti-fake protection structure of the air purifier may also be provided with other anti-fake detection devices, such as a travel switch 2, a sensor and the like. The installation state of the bottom cover 9 can cooperate with these anti-fake detection devices to realize the detection of the installation state of the filter screen 4. For example, when the bottom cover 9 is correctly installed on the lower shell 7, the travel switch 2 is triggered, so that the air purifier can work normally. If the bottom cover 9 is opened or not correctly installed, the travel switch 2 is not triggered, and the air purifier will issue an alarm or stop working, thereby playing an anti-fake protection role.In some public places or commercial environment, the filter screen 4 of the air purifier can become the object of theft by the wrongdoer. The bottom cover 9 prevents the filter screen 4 from entering and exiting the lower shell 7, increases the difficulty of replacing the filter screen 4, and protects the interests of the owner of the air purifier. At the same time, it also ensures that the air purifier always uses the regular filter screen 4, and guarantees the air purification effect and the normal operation of the equipment.

[0060] The above only describes the embodiments of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present application, but these all belong to the protection scope of the present application.

Claims

1. An anti-counterfeiting protection structure of an air cleaner filter screen, characterized by, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

2. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 1, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

3. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 1, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

4. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 3, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

5. The anti-counterfeiting protection structure of the air cleaner screen according to claim 1, wherein, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

6. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 5, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

7. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 5, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover.

8. The anti-counterfeiting protection structure of the air purifier filter screen according to claim 5, characterized in that, The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen, a main control circuit board, an alarm module, a lower shell and a bottom cover. The air purifier filter screen anti-fake protection structure comprises a machine body structure, a travel switch, a cover plate, a filter screen,

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