Dust mask with positioning function

Abstract

The utility model discloses a dust mask with positioning function, include: face guard body, be equipped with air duct opening at the front end of face guard body, be equipped with the discharge hole at the bottom of face guard body, air duct cover plate is set up at air duct opening, and air duct cover plate is the structure that protrudes to the inner chamber of face guard body, is equipped with the air current window on air duct cover plate, power component, power component sets up at air duct opening, and power component surrounds with air duct cover plate, face guard body and forms a air current cavity, positioning mechanism, positioning mechanism sets up in the air current cavity, filter box, filter box sets up at the side portion of face guard body, air -guide channel, the air inlet of air -guide channel communicates with filter box, and the air outlet of air -guide channel is connected on air duct cover plate, and communicates with air current cavity, the surface body of sticking, the surface body sets up on face guard body. The utility model discloses the inside circuit board, has integrated positioning module, ultra -wide band module and bluetooth module, reaches the goal of high accuracy positioning of personnel under different working environment indoors and outdoors.

Description

Technical Field

[0001] This utility model relates to the field of industrial dust mask technology, and in particular to a dust mask with positioning function. Background Technology

[0002] Workers who work in dusty environments for extended periods are highly susceptible to respiratory and lung infections, which can lead to serious respiratory illnesses. In dusty environments, it is essential to wear industrial dust masks promptly. These masks are designed to block dust particles from entering the nasal cavity for workers in dusty conditions.

[0003] Existing industrial protective face shields are limited to "passive protection," providing only physical protection by isolating the wearer from harm. They are not integrated with safety management systems and cannot extend into proactive safety functions such as risk prevention and rescue assistance. Furthermore, existing personnel positioning technologies suffer from reliability issues, relying heavily on independent devices like positioning wristbands and cards. These devices lack the mandatory wearing requirement of industrial protective face shields, leading to problems such as personnel forgetting to wear them or equipment falling off and being damaged in high-risk work environments like chemical plants, mines, and confined spaces. This results in interrupted positioning signals. Moreover, they are not integrated with protective equipment and cannot serve as a terminal node for safety management, failing to meet the essential requirement of consistently reliable positioning in high-risk industries. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a dust mask with positioning function that enables the positioning of the wearer.

[0005] To solve the above-mentioned technical problems, this utility model provides a dustproof face mask with positioning function, comprising: a face mask body, with an air duct opening at the front end and an exhaust hole at the bottom; an air duct cover plate, disposed at the air duct opening, the air duct cover plate having a structure protruding into the inner cavity of the face mask body, and having an airflow window on the air duct cover plate; a power assembly, disposed at the air duct opening, the power assembly, the air duct cover plate, and the face mask body forming an airflow cavity; and a positioning mechanism, disposed within the airflow cavity. The mask body includes: a filter box disposed on the side of the mask body; an air guide channel with its inlet connected to the filter box and its outlet connected to the air duct cover and connected to the airflow cavity; a face-fitting body disposed on the mask body; and a positioning mechanism comprising: a positioning circuit board disposed within the power housing, wherein a positioning module, an ultra-wideband module, and a Bluetooth module are provided on the positioning circuit board for mutual communication; the positioning module, the ultra-wideband module, and the Bluetooth module communicate with the power assembly.

[0006] The number of filter boxes is two, and the two filter boxes are respectively arranged on both sides of the mask body.

[0007] The air guide channel has a three-way structure, and the air inlets on both sides of the air guide channel are connected to the filter boxes on both sides respectively.

[0008] The inner diameter of the air guide channel is uniform.

[0009] The air outlet of the air guide channel is connected to the air duct cover plate through an embedded structure.

[0010] The power assembly includes: a power housing disposed at the air duct opening, forming an airflow cavity with the air duct cover and the mask body; a battery disposed within the power housing; a control circuit board disposed within the power housing, having a control circuit on it, and connected to the battery; and a fan located within the airflow cavity, communicating with the control circuit via a drive assembly, and connected to the battery; wherein the positioning module, the ultra-wideband module, and the Bluetooth module communicate with the control circuit, and are respectively connected to the battery.

[0011] A switch is provided on the power housing, the switch communicates with the control circuit, and the switch is connected to the battery.

[0012] A flange is provided on the power housing, and the flange surrounds the switch.

[0013] The flange is provided with a protrusion.

[0014] The number of protrusions is two, and the two protrusions are respectively disposed on both sides of the flange.

[0015] Compared with the prior art, the dust mask with positioning function of this utility model has the following advantages: First, the internal circuit board of this protective mask integrates a BeiDou + GPS dual-mode positioning module, an UltraWide Band (UWB) module, and a Bluetooth module, all powered by an internal battery. The BeiDou + GPS module ensures accurate positioning in open outdoor environments, the UWB module meets the positioning needs of complex indoor environments (such as enclosed factories and underground mines), and the Bluetooth module assists in short-range positioning calibration. These three modules work together to achieve the technical goal of enabling high-precision positioning for personnel in various indoor and outdoor working environments, comprehensively covering the diverse positioning needs of high-risk industries.

[0016] Secondly, the air inlet at one end of the air duct connects to the filter box on the side of the mask, while the outlet at the other end extends into the airflow chamber inside the mask. The outlet at the end of the air duct is close to the mouth and nose. This design allows filtered clean air to be delivered directly to the breathing zone, reducing ineffective diffusion within the mask and preventing freshly inhaled clean air from being contaminated by exhaled waste air, ensuring a smooth and closed-loop airflow for breathing. The inside of the mask is a relatively closed cavity, and the air duct acts like a precise airflow window within this sealed cavity, allowing only filtered air to enter and exit, while keeping harmful external substances outside the sealed cavity. The "tubular structure" of the duct also makes it easier to control the airflow direction than an open design, preventing turbulent airflow from impacting the facial sealing area. Simultaneously, the fan actively guides clean air into the airflow chamber at positive pressure. Inhalation only takes in clean air, and exhalation only expels waste air, preventing exhaled waste air from flowing back into the breathing zone.

[0017] Third, the filter boxes on both sides of the mask have symmetrical interfaces, which can disperse airflow pressure. During inhalation, air can enter through both channels simultaneously, reducing airflow resistance in a single channel and making breathing easier, especially suitable for long-term work. In addition, the relatively uniform inner diameter of the air guide channel ensures sufficient airflow.

[0018] Fourth, the air duct is an embedded structure, and the duct components can be replaced individually during production or maintenance. If the inner wall of the duct is contaminated with dust or ages due to long-term use, replacing the duct directly is more cost-effective than replacing the entire mask, thus reducing operating costs. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main body structure of the dustproof face mask with positioning function according to this utility model; Figure 2 This is a schematic diagram of the air guide channel structure of the dustproof face mask with positioning function according to this utility model; Figure 3 This is a schematic diagram of the connection structure between the air guide channel and the mask body of the dustproof mask with positioning function according to this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the connection structure between the air guide channel and the mask body of the dustproof mask with positioning function according to this utility model. Figure 2 ; Figure 5 This is an exploded view of the dustproof face mask with positioning function of this utility model; Figure 6 This is a schematic diagram of the positioning mechanism of the dustproof face mask with positioning function of this utility model; Figure 7This is a schematic diagram of the dustproof face mask with positioning function of this utility model.

[0021] Explanation of reference numerals in the accompanying drawings of this utility model dustproof face mask with positioning function: Detailed Implementation

[0022] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0023] For ease of description, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, terms such as "installed," "connected," "joined," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Unless otherwise specified, the terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains, and should be understood to have the meaning consistent with the meaning in the context of the relevant art, and should not be interpreted in an idealized or over-formalized manner, except as expressly defined in this invention.

[0025] like Figures 1-7As shown, the face-fitting body 15 of this dust mask with positioning function fits snugly against the face of the person. The air guide channel 7 of the dust mask adopts a directional delivery design. The air inlet of the air guide channel 7 is precisely connected to the filter box 6 on the side of the mask body 1, and the air outlet extends into the mask body 1 and connects with the inwardly protruding air duct cover 4, communicating with the airflow cavity 9, and making the air outlet at the end close to the breathing area where the mouth and nose are located. When inhaling, the filtered clean air is directly delivered into the airflow cavity 9 and flows out from the airflow window 5 at the top, entering the core breathing area, which greatly reduces the irregular diffusion of clean air inside the mask body 1, fundamentally avoiding the mixing and pollution of the freshly inhaled clean air with the exhaled waste gas remaining in the mask body 1, and finally achieving a closed-loop effect of smooth airflow during breathing, ensuring that waste gas is discharged only from the exhaust port 3. Since the interior of the mask body 1 is a relatively closed cavity, the air guide channel 7 acts as a directional airflow channel within this sealed environment, allowing only filtered clean air to enter the airflow cavity 9 through the air guide channel 7, while preventing harmful external pollutants from entering the sealed cavity. Furthermore, compared to traditional open designs, the tubular structure of the air guide channel 7 provides stronger control over the airflow direction, effectively preventing turbulent airflow from impacting the face and the sealed area of ​​the mask body 1, further ensuring the sealing performance of the mask body 1.

[0026] The positioning mechanism is the core of personnel location tracking. It is built into the airflow cavity to avoid interference from the external environment. Its core is a positioning circuit board 16, which has a positioning module 17 (BeiDou + GPS dual-mode), an ultra-wideband module 18 (UWB module), and a Bluetooth module 19. The three modules can communicate with each other. In addition, the three modules are also connected to the control circuit on the control circuit board 10 of the mask to receive control commands and feed back positioning data. They are all connected to the battery 11 through the battery interface 20 to maintain power supply and ensure continuous and stable operation. The positioning function is achieved through the collaborative work of multiple modules, adaptable to different indoor and outdoor operating scenarios: In open outdoor environments, the BeiDou + GPS dual-mode positioning module 17 simultaneously receives signals from BeiDou and GPS satellites. By measuring the signal propagation time, it calculates the distance to each satellite, combines the precise satellite position information, and uses the triangulation principle to determine the three-dimensional coordinates. The fusion of multiple satellite systems increases the number of receivable satellites and reduces the impact of buildings and terrain obstructions on the signal, significantly improving positioning accuracy and stability. In complex indoor environments (such as enclosed factories and underground mines), the ultra-wideband positioning module 17 plays a crucial role. The positioning base station continuously sends nanosecond-level narrow pulse signals. After receiving signals from multiple base stations, the module calculates the signal arrival time difference or flight time, and combines the known base station positions with a polygonal positioning algorithm to achieve centimeter-level high-precision positioning. Its pulse signal has strong anti-interference capabilities and can cope with complex indoor scenarios with multiple obstructions and interference. The Bluetooth module 19 is used for near-range positioning calibration. In basic mode, based on the RSSI (Received Signal Strength Indication) signal strength, it estimates the distance by receiving multiple Bluetooth beacon signals and uses triangulation to locate the position using Bluetooth 5.1 or higher. Arrival / AoD (Angle of Departure) technology can also directly determine the location by calculating the signal angle through the antenna array, further improving accuracy. This technology is also low-cost, easy to deploy, and can help optimize positioning performance in short-range indoor scenarios. Meanwhile, the positioning circuit board 16 also integrates an external interface 21 (TYPE-C interface), which can establish a connection with external devices. It is worth noting that the positioning module 17 (BeiDou + GPS dual-mode), the ultra-wideband module 18 (UWB module), the Bluetooth module 19, the battery interface 20, and the external interface 21 can also be directly integrated onto the control circuit board 10.

[0027] This multi-positioning module 17 integrated design enables the protective face shield to fully cover the diverse positioning needs of high-risk industries such as chemical, mining, and confined space operations: the Beidou + GPS positioning module 17 ensures accurate outdoor positioning, the ultra-wideband module 18 solves the problem of high-precision indoor positioning, and the Bluetooth module 19 enables close-range calibration. The three work together to form a positioning system that is "seamlessly connected indoor and outdoor, with high-precision full coverage." There is no need to carry an additional independent positioning device. With the "forced wearing" attribute of the face shield, the positioning failure caused by forgetting to wear or falling off the positioning device is fundamentally avoided. This allows the protective face shield to not only achieve basic protection functions but also become an important terminal for safety management, providing key location data support for personnel safety monitoring and emergency rescue.

[0028] The mask body 1 has filter boxes 6 on both sides. The symmetrical filter boxes and the air guide channels 7 work together to form a dual-sided air intake structure, which allows for simultaneous air intake from both sides during inhalation. This evenly distributes the airflow pressure to both channels, significantly reducing the airflow resistance of a single channel and making breathing smoother and easier. It is especially suitable for long-term work scenarios and can effectively alleviate the user's respiratory fatigue. Moreover, the inner diameter of the air guide channels 7 remains relatively uniform, ensuring stable airflow within the channels and avoiding airflow loss due to sudden changes in the inner diameter. This ensures that the staff always have a sufficient supply of clean air to meet the breathing needs under different work intensities.

[0029] The power housing 8 of the power unit is fitted to the air duct opening of the mask body 1, forming an airflow cavity 9 together with the air duct cover 4 and the mask body 1. The fan 12 of the power unit is placed inside the airflow cavity 9. Under the active drive of the fan 12, the clean air entering the airflow cavity 9 through the air guide channel 7 is always kept under positive pressure. The positive pressure environment, combined with the directional delivery characteristics of the channel, ensures that the operator only inhales clean air when inhaling, completely eliminating the problem of exhaled waste gas flowing back into the breathing area. The switch 13 on the outermost side of the power housing 8 can control the opening and closing of the fan 12 or its speed. The fan 12 and the switch 13 are controlled by the control circuit on the internal control circuit board 10 and powered by the battery 11. The battery 11 can also be charged via a USB port.

[0030] Since operators typically wear gloves, the heavy gloves increase the difficulty of finding and operating the switch 13. Therefore, a surrounding flange 14 is provided around the switch 13 to facilitate finding and locating it, enabling blind operation. Furthermore, protrusions 2 are provided on both sides of the flange 14 to prevent the switch 13 from contacting the flat surface when the operator places the mask on the flat surface, thus preventing accidental activation due to pressure.

[0031] The air guide channel 7 adopts an embedded installation method, allowing it to be disassembled and replaced individually during production assembly or routine maintenance. When the inner wall of the air guide channel 7 accumulates dust and pollutants due to long-term use, or shows signs of aging and damage, it is not necessary to replace the entire mask; only the air guide channel 7 needs to be replaced to restore normal use. This not only simplifies the maintenance process but also significantly reduces the cost of consumable replacements, thereby substantially lowering the overall cost of using the mask.

[0032] The above description of the embodiments is provided to enable those skilled in the art to understand and use the present invention. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A dust mask with positioning function, characterized in that, include: The mask body has an air duct opening at the front end and an exhaust hole at the bottom. A duct cover plate is provided at the duct opening. The duct cover plate has a structure that protrudes into the inner cavity of the mask body and has an airflow window. A power assembly is disposed at the air duct opening, and the power assembly, the air duct cover, and the mask body form an airflow cavity; A positioning mechanism is disposed within the airflow cavity; A filter box is disposed on the side of the mask body; An air guide channel, wherein the air inlet of the air guide channel is connected to the filter box, and the air outlet of the air guide channel is connected to the air duct cover and is connected to the airflow cavity; A face mask body, wherein the face mask body is disposed on the face mask body; in The positioning mechanism includes: A positioning circuit board is disposed inside the power housing. The positioning circuit board is equipped with a positioning module, an ultra-wideband module, and a Bluetooth module that communicate with each other. The positioning module, the ultra-wideband module, and the Bluetooth module communicate with the power component.

2. The dust mask with positioning function according to claim 1, characterized in that, The number of filter boxes is two, and the two filter boxes are respectively arranged on both sides of the mask body.

3. The dust mask with positioning function according to claim 2, characterized in that, The air guide channel has a three-way structure, and the air inlets on both sides of the air guide channel are connected to the filter boxes on both sides respectively.

4. The dust mask with positioning function according to claim 1 or 3, characterized in that, The inner diameter of the air guide channel is uniform.

5. The dustproof face shield with positioning function according to claim 1, characterized in that, The air outlet of the air guide channel is connected to the air duct cover plate through an embedded structure.

6. The dustproof face shield with positioning function according to claim 1, characterized in that, The power assembly includes: The power housing is disposed at the air duct opening and, together with the air duct cover and the mask body, forms the airflow cavity; A battery, wherein the battery is disposed within the power housing; A control circuit board is disposed inside the power housing, and a control circuit is provided on the control circuit board. The control circuit board is connected to the battery. The fan, located within the airflow cavity, communicates with the control circuit via a drive assembly, and is connected to the battery along with the drive assembly. The positioning module, the ultra-wideband module, and the Bluetooth module communicate with the control circuit, and are connected to the battery.

7. The dust mask with positioning function according to claim 6, characterized in that, A switch is provided on the power housing, the switch communicates with the control circuit, and the switch is connected to the battery.

8. The dust mask with positioning function according to claim 7, characterized in that, A flange is provided on the power housing, and the flange surrounds the switch.

9. The dust mask with positioning function according to claim 8, characterized in that, The flange is provided with a protrusion.

10. The dustproof face shield with positioning function according to claim 9, characterized in that, The number of protrusions is two, and the two protrusions are respectively disposed on both sides of the flange.

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