Shared oxygen generator self-pickup cabinet

Abstract

This utility model discloses a shared oxygen concentrator self-service locker, comprising a locker body, a charging module, an accessory dispensing module, a detection module, a central controller, and a user interaction module. The locker body has a main unit compartment, a battery compartment, and an accessory compartment. The charging module includes a main unit charging interface and a battery charging interface. The accessory dispensing module, located in the accessory compartment, includes a helical spring propulsion mechanism, a stepper motor, and a laser rangefinder sensor. The detection module includes a momentary switch, a camera, and a communication interface. The user interaction module includes a display screen, a return button, and a speaker. The charging module, accessory dispensing module, detection module, and user interaction module are electrically or signal-connected to the central controller to achieve unified control and data interaction. This utility model, through the above solution, realizes a 24-hour unattended shared self-service locker integrating charging, self-inspection, inventory monitoring, and QR code rental, possessing excellent practicality.

Description

Technical Field

[0001] This utility model relates to the field of shared equipment management technology, and in particular to a shared oxygen generator self-service locker. Background Technology

[0002] Shared oxygen concentrators, with their convenient "scan-to-use, borrow-and-return" features, have been rapidly deployed in six major scenarios: high-altitude tourism, large-scale sporting events, urban emergency response, health and wellness institutions, military-civilian integration, and long-distance transportation. However, as the density of service points, usage frequency, and peak passenger flow all increase simultaneously, the four major problems of offline operation and maintenance are also magnified: a) Manual charging is time-consuming and inefficient Currently, the "manual plug-in" method is commonly used, and each device requires 2-3 minutes to complete the plugging, registration, and labeling process; if a branch has 30 devices, the charging process alone takes 1 hour.

[0003] During peak periods (holidays, peak tourist seasons), the concentrated return of equipment leads to a 30-40% decrease in equipment turnover due to long charging queues, resulting in a direct loss of rental income.

[0004] Manual labor requires carrying multiple chargers and testing equipment to find sockets on-site, which is labor-intensive and prone to missed or incorrect charging, and may even cause a "false full charge" phenomenon the next day due to loose plugs.

[0005] b) Faulty machines are easily rented out again. The lack of a "return and self-inspection" mechanism means that abnormalities in flow, pressure, and oxygen concentration cannot be detected in real time. Traditional methods rely on "user reports for repairs" or "weekly inspections," which are typically delayed by 1-3 days. During this period, faulty machines are still scanned and borrowed, leading to increased negative user reviews and complaints.

[0006] Maintenance personnel need to disassemble and inspect the machine on-site, which incurs high transportation costs. Furthermore, the dispersed locations in high-altitude and scenic areas further extend the downtime.

[0007] c) Manual inventory checks of spare parts are prone to errors. Nasal cannulas, face masks, and filter cotton are disposable consumables. They are small in size and low in unit price. Traditional "manual counting" is prone to omissions and duplicates. During peak season, daily consumption can reach 200-300 items per outlet. Manual inventory count takes 15-20 minutes. Errors can occur during peak periods, and stockouts and supply disruptions can affect user experience. The paper ledgers are not synchronized with the back-end system, resulting in the phenomenon of "online inventory but offline inventory being sold out", causing users to make wasted trips.

[0008] d) The rental and return process requires manual verification. The current process is "scan code → manually verify number → manually take photo for record → manually unlock", with an average time of 60-90 seconds per person; During peak hours, users have to wait 5-10 minutes, resulting in a poor experience and high churn rate. Manual verification is subject to subjective differences, and inconsistent photo naming and archiving formats make it difficult to trace later. When there are no staff at night or in remote locations, 24-hour service cannot be provided, which limits the coverage radius of shared services.

[0009] In summary, the traditional offline operation and maintenance model has obvious shortcomings in the four dimensions of "efficiency, quality, cost, and experience", and urgently needs a hardware system that can automatically charge, detect, inventory, and operate unattended to solve these problems. Summary of the Invention

[0010] A brief overview of embodiments of the present invention is provided below to provide a basic understanding of certain aspects of the invention. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0011] To solve the above-mentioned technical problems, this utility model discloses a 24-hour unattended shared self-pickup locker that integrates charging, self-inspection, inventory monitoring, and QR code rental.

[0012] Specifically, this utility model discloses a shared oxygen concentrator self-service locker, comprising a locker body, a charging module, an accessory dispensing module, a detection module, a central controller, and a user interaction module. The locker body has a main unit compartment, a battery compartment, and an accessory compartment. The charging module includes a main unit charging interface and a battery charging interface for charging the returned device. The accessory dispensing module is located in the accessory compartment and includes a helical spring propulsion mechanism, a stepper motor, and a laser rangefinder sensor. The detection module includes a momentary switch, a camera, and a communication interface for device return detection, appearance photography, and self-testing. The user interaction module includes a display screen (or touch screen), a return button, and a speaker for unmanned QR code rental. The charging module, accessory dispensing module, detection module, and user interaction module are electrically or signal-connected to the central controller to achieve unified control and data interaction. The central controller processes information from the charging module, accessory dispensing module, detection module, and user interaction module and reports the locker status to a remote server in real time.

[0013] Furthermore, the cabinet includes a main unit casing, with a camera and a user interaction module (display screen, return button, and speaker) mounted on the front. The front of the main unit casing also features a dustproof and rainproof door, which is hinged to the main unit casing via a pivot at its upper end. A handle is located at the lower end of the dustproof and rainproof door. A waterproof strip is installed at the junction of the dustproof and rainproof door and the casing, achieving an overall protection rating of IP54. The dustproof and rainproof door can be lifted 90° for maintenance via the pivot and handle.

[0014] The main unit casing is made of cold-rolled steel sheet, bent and welded as a whole, with a powder-coated surface. The main unit casing also includes a back cover, which is hinged to the main unit casing via a fixed hinge. The back cover has a reserved mechanical unlocking port for an electromagnetic lock, which is normally sealed with a UV sticker. In case of power failure or malfunction, a mechanical key can be inserted to unlock and repair the device.

[0015] Furthermore, the bottom of the main unit compartment is provided with a first power / signal interface and a first jog switch, and the bottom of the battery compartment is provided with a second power / signal interface and a second jog switch; both the main unit compartment and the battery compartment have hot-swap identification and anti-reverse insertion structures. The first jog switch and the second jog switch are triggered after the device is fully pressed in, sending a "returned" signal to the central controller and starting charging.

[0016] The first power / signal interface can generally be implemented by a blade connector (or contact spring), and the second power / signal interface can also be implemented by a blade connector (or contact spring). The blade connector (or spring contact) constitutes the power / communication interface. Each compartment is also equipped with an independent first jog switch and a second jog switch, which are triggered when the equipment is fully pressed in, sending a 'returned' signal to the central controller and starting charging.

[0017] Furthermore, the main engine bay is equipped with a locking and ejection mechanism; the locking and ejection mechanism includes a servo motor, a rocker arm, a locking tongue, and a battery ejector. The servo motor is fixed to the inside of the side wall of the compartment, and its output shaft is located between the first rocker arm and the second rocker arm. The other end of the rocker arm passes through the latch lifting hole. The rocker arm can rotate around a fixed axis, and the latch can slide up and down in the linear guide groove provided on the bottom plate of the compartment. The battery ejector consists of a compression spring and a push rod, with the front end of the push rod abutting against the rear end of the battery. When the servo output shaft rotates downwards, the first rocker rotates, the first locking tongue slides upwards and disengages from the battery lock hole, and the compressed spring pushes the push rod to eject the battery 15–20mm. When the servo motor output shaft rotates upward, the second rocker arm rotates, and the second locking tongue slides downward and disengages from the oxygen generator locking hole, thus releasing the oxygen generator.

[0018] In case of electromagnetic lock failure or power loss, a key can be inserted through the mechanical unlocking port on the back cover to open it for easy maintenance. The rocker arm converts rotary motion into linear motion, resulting in a compact and reliable structure. After opening the back cover, the rocker arm can be directly moved for manual reset.

[0019] Furthermore, the helical spring propulsion mechanism includes a spring, a guide sleeve, and accessory packs. The front end of the spring is fixed to the output shaft of a stepper motor, and a guide sleeve is coaxially mounted outside the spring. Several accessory packs are arranged axially along the guide sleeve within the accessory compartment. The stepper motor drives the spring to rotate, feeding the accessory packs one by one to the outlet end of the guide sleeve. The accessory packs fall one by one into the accessory retrieval channel by gravity or an outlet baffle. A laser rangefinder sensor is installed on the opposite side of the accessory retrieval channel to detect and count the falling items. The accessory packs contain accessories such as nasal cannulas, oxygen masks, alcohol wipes, and a main unit carrying strap.

[0020] Furthermore, the parts pickup lane is equipped with LED lights to provide illumination, making it convenient to pick up parts at night.

[0021] Furthermore, a camera is installed directly above the entrance to the main unit compartment. When the return button is pressed, it automatically takes multiple photos (e.g., 3) and uploads them to the cloud to confirm that the device is in good condition. The display screen simultaneously plays a video of the return process and prompts the user to "Please push the device all the way down".

[0022] Furthermore, the cabinet is equipped with storage status indicator lights, such as a slow flashing green light indicating that the equipment is available for rent; a solid green light indicating that charging is complete; a fast flashing red light indicating a self-check fault; and a speaker that can simultaneously broadcast the corresponding status.

[0023] This utility model realizes a 24-hour unattended shared self-pickup locker that integrates charging, self-inspection, inventory monitoring, and QR code rental through the above solution. It has the advantages of synchronous management of host, battery and accessories, self-inspection upon return to prevent faulty machines, real-time inventory monitoring, five-second QR code retrieval, and contactless process, and has great practicality. Attached Figure Description

[0024] This invention can be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to denote the same or similar parts. These drawings, together with the following detailed description, are incorporated in and form part of this specification, and are used to further illustrate preferred embodiments of the invention and explain the principles and advantages of the invention. In the drawings: Figure 1a This is a perspective view of the overall appearance of the self-service locker in Example 1; Figure 1b This is a front view of the overall appearance of the self-service locker in Example 1; Figure 1cThis is a side view of the overall appearance of the self-service locker in Example 1; Figure 1d This is a top view of the overall appearance of the self-service locker in Example 1; Figure 2 This is a layout diagram of the internal layout of the self-service locker in Example 1; Figure 3 This is a cross-sectional view of the self-service locker in Example 1 (including the main unit's compartment locking mechanism servo motor, rocker arm, and latch). Figure 4 This is a schematic diagram of the battery module in Example 1; Figure 5 This is a cross-sectional view of the accessory dispensing module in Example 1 (including the helical spring, laser rangefinder, and LED lighting). Figure 6 This refers to the mechanical unlocking reserved opening in Example 1 (including the mechanical unlocking reserved opening for electromagnetic locks). Figure 7 This is an enlarged view of the charging interface and jog switch in the main unit compartment of Example 1; Figure 8a This is a perspective view of the overall appearance of the self-service locker in Example 2; Figure 8b This is a front view of the overall appearance of the self-service locker in Example 2; Figure 8c This is a rear view of the overall appearance of the self-service locker in Example 2; Figure 9 This is a schematic diagram of the interior of the self-service locker in Example 2; Figure 10 This is a schematic diagram of the parts compartment in Example 2; Figure 11 This is a cross-sectional view of the self-pickup cabinet in Example 2 (including the host compartment locking mechanism servo motor-rocker-lock tongue). Detailed Implementation

[0025] Embodiments of the present invention will now be described with reference to the accompanying drawings. Elements and features described in one drawing or embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that, for clarity, representations and descriptions of components and processes unrelated to the present invention and known to those skilled in the art have been omitted from the drawings and description.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] The promotion and operation of existing shared oxygen concentrators rely on efficient offline infrastructure. Currently, the management of shared equipment suffers from drawbacks such as complex charging management, unknown equipment status, inefficient inventory management, and cumbersome rental processes. To address these issues, this utility model provides a shared oxygen concentrator self-service locker that integrates charging, self-inspection, inventory monitoring, and QR code rental, enabling 24-hour unattended operation.

[0028] Example 1 For details, see Figures 1a-1d This embodiment discloses a shared oxygen concentrator self-service cabinet, including a cabinet body 100. The cabinet body 100 includes a main unit casing 110. A camera 103 and a user interaction module are installed on the front of the main unit casing 110. The front of the main unit casing 110 has a dustproof and rainproof cabinet door 120, which is hinged to the main unit casing 110 via a pivot at its upper end. A handle 122 is provided at the lower end of the dustproof and rainproof cabinet door 120. A waterproof strip 121 is provided at the joint between the dustproof and rainproof cabinet door 120 and the casing, so that the overall protection level of the machine reaches IP54. The dustproof and rainproof cabinet door 120 can be lifted 90° for maintenance via the pivot and the handle.

[0029] The cabinet 100 has a back cover. The cabinet is made of cold-rolled steel plate bent and welded. The back cover is fixed to the cabinet by hinge 105. The back cover is provided with a mechanical unlocking port.

[0030] As a preferred embodiment, the top of the cabinet 100 has a raised structure and the bottom has a recessed structure, thereby enabling the cabinet to be stacked in multiple layers and preventing slippage.

[0031] As a preferred embodiment, the cabinet 100 has a drainage structure, which can prevent water from entering the interior even when it is raining.

[0032] In addition, as a preferred embodiment, the cabinet 100 is also equipped with a support mechanism for easy placement on a desktop or tabletop.

[0033] In this embodiment, the cabinet 100 is equipped with a charging module, an accessory distribution module, a detection module, a central controller, and a user interaction module.

[0034] See Figure 2 The cabinet 100 includes a main unit compartment 130, a battery compartment 140, and an accessory compartment. The main unit compartment 130 houses the oxygen concentrator, and the battery compartment 140 houses the batteries. The main unit compartment 130 and battery compartment 140 are independent compartments with visible access points on their surfaces. The cabinet also features compartment status indicator lights. These lights flash to indicate that the equipment is ready / available for retrieval; for example, a slow flashing green light indicates the equipment is available for rent; a solid green light indicates charging is complete; and a fast flashing red light indicates a self-check fault.

[0035] See Figure 3 Cross-sectional view of the self-pickup locker and Figure 4 A schematic diagram of the battery module; the charging module includes a host charging interface 108 ( Figure 7 It includes a battery charging interface 106 for charging the returned device.

[0036] Both the main unit charging interface 108 and the battery charging interface 106 are equipped with blade connectors, forming a power / communication interface. Each compartment is also equipped with an independent momentary switch 107. Figure 7 Once the device is fully pressed in, the jog switch is triggered, sending a 'returned' signal to the central controller and initiating charging.

[0037] The accessories compartment includes a cavity for holding several accessory packs.

[0038] The main engine bay is equipped with a locking and ejection mechanism; in this embodiment, see... Figure 3The locking and ejection mechanism includes a servo motor 201, a first rocker arm 202, a first locking tongue 203, a second rocker arm 205, a second locking tongue 206, and a battery ejector 204. The servo motor 201 is fixed to the inner side of the compartment side wall, and its output shaft is located between the first rocker arm 202 and the second rocker arm 205. The other end of the rocker arm 202 passes through the lifting hole of the locking tongue 203, and the locking tongue 203 can slide up and down in the linear guide groove provided in the compartment bottom plate. The other end of the rocker arm 205 passes through the lifting hole of the locking tongue 206, and the locking tongue 205... It can slide up and down within the linear guide groove provided on the bottom plate of the compartment; the battery ejector 204 consists of a compression spring and a push rod, with the front end of the push rod abutting the rear end face of the battery; when the output shaft of the servo motor 201 rotates downward, the first rocker arm 202 rotates, the first locking tongue 203 slides upward and disengages from the battery locking hole, and the compression spring pushes the push rod to eject the battery 15–20 mm; when the output shaft of the servo motor 201 rotates upward, the second rocker arm 205 rotates, the second locking tongue 206 slides downward and disengages from the oxygen generator locking hole, and the oxygen generator is released. The above process is described as follows: Servo motor 201 output shaft rotates downward → first rocker arm 202 rotates → first locking tongue 203 moves upward → battery releases; Servo motor 201 output shaft rotates upward → second rocker arm 205 rotates → second locking tongue 206 moves downward → main unit releases.

[0039] This embodiment uses a hybrid mechanical-electric lock, which can still be manually reset even in the event of a power outage; the rocker arm converts rotational motion into linear motion, resulting in a compact and reliable structure. In the event of a power outage, the back cover can be opened by inserting a key through the mechanical unlocking port on the back cover, and the rocker arm can be directly moved to achieve manual reset.

[0040] See Figure 5 and Figure 6 The parts dispensing module is located within the parts compartment and includes a helical spring propulsion mechanism, a stepper motor 301, and a laser rangefinder 302. The helical spring propulsion mechanism includes a spring 303, a guide sleeve 304, and a nasal cannula. The front end of the spring 303 is fixed to the output shaft of the stepper motor. The guide sleeve 304 is coaxially mounted outside the spring 303, and several parts packages are arranged axially along the guide sleeve 304 within the parts compartment. The stepper motor drives the spring 303 to rotate, feeding the parts packages one by one to the outlet end of the guide sleeve 304. The parts packages then fall one by one into the parts retrieval channel 305, controlled by gravity or an outlet baffle. The parts retrieval channel 305 is located directly below the outlet of the spring 303. A dual-module laser rangefinder is used to count the remaining amount of nasal cannula in real time. The laser rangefinder is installed on the opposite side of the parts retrieval channel 305 to detect and count whether parts have fallen.

[0041] As a specific embodiment, the spring 303 has a wire diameter of 1.2mm, an outer diameter of 20mm, a pitch of 8mm, and 10 effective turns, and is right-handed. The opening force of the outlet baffle is 0.3–0.5N. The outlet baffle is located at the outlet end and is an elastic baffle with an opening force ≤0.5N, ensuring that only one accessory package falls at a time. The accessory compartment is a cylinder with a capacity of several individually packaged accessory packages; the helical spring 303 propulsion mechanism is driven by a stepper motor, pushing one accessory package to the accessory retrieval channel 305 with each rotation; laser rangefinders are installed on both sides of the channel to detect drops in real time and count inventory. When the inventory is preset to a certain number of accessories (e.g., 2), a replenishment reminder is pushed to the background. The stepper motor is a DC motor used to drive the helical spring to push the accessories to fall. The laser rangefinders are located on both sides of the spring to measure the distance of the accessories and determine whether the quantity of accessories needs to be replenished based on the data (two sensors are compared for judgment).

[0042] The parts distribution module also includes a shielding plate 306 and an electromagnetic lock 307. The shielding plate is used to cover the power supply section to prevent accidental contact by personnel. The electromagnetic lock is used by staff to control the opening of the rear cover door via a mini-program to replenish parts.

[0043] The parts retrieval channel 305 is equipped with LED lights 308 to provide illumination for easy parts retrieval at night. The parts retrieval channel 305 also has a pre-installed electromagnetic lock mechanical unlocking slot 309. This slot is used for mechanical unlocking of equipment in case of malfunction for maintenance (it is normally covered with a UV sticker to prevent accidental operation by unauthorized personnel).

[0044] The detection module includes a jog switch, a camera 103, and a communication interface, used for device positioning detection, appearance photography, and self-testing.

[0045] The user interaction module includes a display screen 101, a return button 102, and a speaker, for unmanned QR code scanning rental.

[0046] The charging module, parts dispensing module, detection module, and user interaction module are electrically or signal-connected to the central controller to achieve unified control and data interaction. The central controller processes information from the charging module, parts dispensing module, detection module, and user interaction module, and reports the status of each compartment to the remote server in real time.

[0047] In this embodiment, the user interaction module includes a large-screen display and a speaker, enabling QR code rental and voice guidance. The camera automatically takes a picture upon return to confirm the device's appearance is intact. The large-screen display can loop the rental process, advertisements, and operation instructions. A return button triggers a photo and plays a return tutorial video with a single click. The central controller can be implemented using an RK3566 Android board, reporting warehouse JSON data every second via MQTT.

[0048] The detection module's jog switch confirms the device's return to its original position; the camera, installed directly above the main unit's entrance, automatically takes three photos and uploads them to the cloud after the return button is pressed, confirming the device's external condition; the display screen simultaneously plays a video of the return process and prompts the user on the correct way to return the device. Simultaneously, the communication interface connects to the oxygen concentrator and performs a 30-second self-check (flow rate, pressure, oxygen concentration).

[0049] The self-service locker in this embodiment has multiple storage compartments, each equipped with two types of charging interfaces: a main unit charging interface and an external battery charging interface. The main unit charging interface is used to connect to and charge the oxygen concentrator's main unit (built-in battery) when returned to the compartment. The external battery charging interface is dedicated to independently charging the oxygen concentrator's replaceable external battery. The locker can simultaneously charge both the oxygen concentrator's main unit and its external battery, ensuring sufficient power for the next rental.

[0050] Each storage compartment integrates an equipment detection module. In this embodiment, the self-service locker utilizes an accessory dispensing module, a detection module, and a central controller to implement an automated equipment detection and control system. Once the oxygen concentrator is placed in a compartment and connected, the central controller can establish communication with it through this module. The central controller can actively control the oxygen concentrator to perform a series of self-test procedures, including startup, oxygen output, and sensor detection, and read its operating parameters (such as flow rate, pressure, and power consumption), thereby accurately determining whether the oxygen concentrator is functioning correctly. The central controller has a built-in network communication module to enable IoT connectivity, allowing real-time data interaction with the cloud management backend. The central controller automatically reports information for each compartment to the backend, including: whether there is equipment in the compartment, the equipment ID, the equipment self-test result (normal / faulty), the main unit's power consumption, and the external battery's power consumption.

[0051] The self-service locker in this embodiment integrates a sensor (infrared sensor) to monitor the inventory of accessories such as nasal oxygen cannulas and to provide intelligent notifications of accessory quantities.

[0052] Example 2 In this embodiment, see Figures 8a-8c In this embodiment, a shared oxygen concentrator self-pickup cabinet includes a cabinet body 10. The cabinet body 10 includes a main unit shell 11. A camera 12, a display screen 13, and an infrared human body sensor 14 are installed on the upper front part of the main unit shell 11 to realize user identification, interaction and security monitoring.

[0053] The lower front part of the main unit casing 11 is provided with a dustproof and rainproof cabinet door 15, which is hinged to the main unit casing 11 via an automatic spring-loaded hinge 151 and a deceleration hinge 152 located at its end (see...). Figure 9 It features excellent sealing and protective performance, effectively coping with outdoor environments. A handle 16 is located on one side of the dustproof and rainproof cover 15 for easy opening and maintenance.

[0054] The infrared human body sensor 14 is used to detect whether a user is approaching. When a human body is detected, the camera 12 is automatically activated to capture images and record anti-theft information, realizing intelligent monitoring and energy-saving management. The upper part of the main unit casing 11 is also equipped with an advertising board 17, which can be used to paste printed advertisements to enhance the added value of operations.

[0055] In this embodiment, the handle 16 has a built-in electromagnetic lock 161. When the user rents or returns the cabinet, he / she must first scan the QR code on the display screen 13. After the system confirms the order status, the electromagnetic lock 161 is unlocked, and the dustproof and rainproof cabinet door 15 can be opened. This mechanism is more secure and controllable than the traditional "any opening" mode.

[0056] See Figure 9 The cabinet 10 includes a main unit compartment, a battery compartment, and an accessory compartment. The main unit compartment houses the oxygen concentrator main unit 18, which provides oxygen output. The cabinet also includes indicator lights 19, which flash to prompt the user to retrieve the device during operation, enhancing the user experience. The battery compartment houses the external battery 20 for easy replacement and maintenance.

[0057] Cabinet 10 is also equipped with a main control board and a main power supply for the cabinet. The main control board is used to control individual actuators such as the servo motor and electromagnetic lock of the whole machine, and the main power supply for the cabinet is used to provide mains power transformer for the circuit of the whole machine.

[0058] See Figure 10 The parts compartment contains multiple functional modules for automated management and replenishment of parts. It includes a laser rangefinder 21, a helical conveyor spring 22, and a DC motor 25. The laser rangefinder 21, installed in pairs, measures the distance to parts to determine sufficiency, improving accuracy through a two-by-two comparison mechanism. The helical conveyor spring 22 rotates to propel packaged parts forward, facilitating automatic transport. The DC motor 25 drives the helical conveyor spring, controlling the movement of parts and their dropping.

[0059] The door 24 of the parts compartment is hinged to the main unit housing 11 via a damping pivot 23. The damping pivot acts as a buffer when the electromagnetic lock pops open the panel. Electromagnetic lock: Operators can control the back cover door to pop open via a mini-program to perform parts replenishment operations, enabling remote management and maintenance.

[0060] The accessory compartment door 24 is also equipped with an accessory compartment limit baffle 35 and a shielding plate. The limit baffle is used to prevent accessories from sliding and damaging the panel screen. The shielding plate is used to shield the power supply part to prevent accidental contact and improve safety.

[0061] The rental lockers are equipped with a parts retrieval lane and LED lighting for the parts retrieval lane. The parts retrieval lane is used to receive dropped parts, allowing users to retrieve them from here. The LED lighting for the parts retrieval lane provides illumination, making it easier for users to retrieve parts in low-light conditions. See Figure 11 The main engine compartment is equipped with a locking and ejection mechanism, which includes a servo motor 31, a rocker arm 32, a locking tongue 33, and a battery ejector 34. The locking and ejection mechanism in this embodiment has the same structure as that in embodiment 1, and will not be described in detail here.

[0062] The present invention has a reasonable overall structure and clear module functions, and has good security, intelligence and maintenance convenience, making it suitable for unattended operation scenarios of shared medical equipment.

[0063] The self-service locker in this embodiment enables an unmanned QR code rental process: the exterior of the locker is equipped with a user interface consisting of a display screen.

[0064] Application Scenario 1: Users scan the QR code displayed on the screen using a mobile app to trigger a rental request. After verifying user information and account status, the backend server sends a command to the self-service locker. The central controller receives the command, automatically opens the locker door, and a fully functional, fully charged oxygen concentrator and external battery pop out, along with an accessory pack. The user can then take the device. Upon return, the user scans the code again, the camera takes a picture, and the user briefly activates the switch to confirm the oxygen concentrator and external battery are returned in place. The device then begins charging and self-checking. If the results are normal, the locker door locks and an alert is sent to "available for rent again." If a malfunction occurs, the locker is locked and a maintenance request is sent to the backend.

[0065] Application Scenario 2 (Outdoor Rainy Day Scenario): When the user returns the cabinet, the dustproof and rainproof door is already closed, and rainwater flows down along the rainproof eaves; after the user presses the return button, the camera takes a series of photos to confirm that there is no water ingress on the exterior, the main unit is pushed into the compartment and triggers the momentary switch to complete the return, start charging, and the indicator light flashes green slowly.

[0066] Application Scenario 3 (Fault Diagnosis Scenario): If the oxygen concentration of the self-test oxygen generator is below standard or other faults occur, or if the external battery cannot be charged, the central controller reports the fault through the communication module, the servo motor remains locked, and the indicator light flashes red rapidly; if the faulty oxygen generator or external battery is not supported for rental, the backend will notify maintenance personnel for repair. When the solenoid valve malfunctions and cannot open automatically, maintenance personnel can remove the UV sticker, insert the mechanical key into the unlocking port, and open the cabinet door for repair.

[0067] The embodiments of the present invention use a servo motor to control the switch, which solves the disadvantage that common small electromagnetic locks on the market cannot remain open. Furthermore, a single transmission mechanism can be used to open and close two components, reducing the control and manufacturing costs of the equipment.

[0068] This invention employs a servo motor to control the switch, and the battery is ejected via a catapult. The servo motor remains in the open position of the main unit's locking tongue, allowing both the battery and the main unit to unlock simultaneously for removal. Opening the battery switch first ensures the battery is ejected first, preventing the servo motor from locking the battery again when opening or closing the main unit.

[0069] In this embodiment of the invention, the accessory compartment is equipped with a laser distance sensor, which can calculate whether restocking is needed based on the data uploaded by the sensor, making it convenient to deploy in unattended outdoor areas and expanding the market application scope of the equipment.

[0070] In this embodiment of the invention, the parts retrieval channel is equipped with a laser sensor, which can determine whether the goods have actually fallen into the retrieval port. This effectively compensates for the situation where manual replenishment does not replenish goods in sequence according to the compartment intervals, reduces the trouble for users who encounter goods falling and getting stuck and need to file a complaint, greatly facilitates the user experience, and reduces the probability of customer complaints.

[0071] This invention employs a hinged door design with a mechanical return device that automatically closes the cabinet door after the user removes the product. The magnetic lock requires close proximity to the suction plate to achieve maximum suction force; if obstructed, it cannot achieve effective suction and locking, thus effectively preventing pinching.

[0072] Compared with the prior art, the present invention has the following significant advantages: 1. Highly automated management: It realizes full automation of charging, testing, and inventory counting, which greatly reduces the cost of manual operation and maintenance.

[0073] High service reliability: Equipment health checks are automatically performed before rental, preventing faulty equipment from being provided to users, thus improving service quality and user trust.

[0074] Maximizing operational efficiency: The 24-hour unattended QR code rental and return service is simple and quick, improving equipment turnover rate and user convenience.

[0075] Data-driven precision management: The backend can monitor the precise status of each device and each network point in real time, providing strong data support for scheduling, maintenance and business decisions.

[0076] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0077] Although the present invention has been disclosed above through the description of specific embodiments, it should be understood that all the embodiments and examples described above are exemplary and not restrictive. Those skilled in the art can design various modifications, improvements, or equivalents to the present invention within the spirit and scope of the appended claims. These modifications, improvements, or equivalents should also be considered to be included within the protection scope of the present invention.

Claims

1. A shared oxygen concentrator self-service locker, characterized in that, It includes the cabinet, charging module, accessories distribution module, testing module, central controller and user interaction module; The cabinet is equipped with a main unit compartment, a battery compartment, and an accessory compartment; The charging module includes a host charging interface and a battery charging interface, used to charge the returned device. The parts dispensing module is located in the parts compartment and includes a helical spring propulsion mechanism, a stepper motor, and a laser rangefinder sensor. The detection module includes a jog switch, a camera, and a communication interface, and is used for device positioning detection, appearance photography, and self-testing. The user interaction module includes a display screen, a return button, and a speaker, and is used for unmanned QR code rental. The charging module, accessory dispensing module, detection module, and user interaction module are electrically or signal-connected to the central controller to achieve unified control and data interaction. The central controller is used to process the information from the charging module, accessory dispensing module, detection module, and user interaction module, and report the warehouse status to the remote server in real time.

2. The shared oxygen concentrator self-service locker according to claim 1, characterized in that, The cabinet includes a main unit shell, with a camera and a user interaction module installed on the front of the main unit shell; the front of the main unit shell also has a dustproof and rainproof cabinet door, which is hinged to the main unit shell via a pivot at its upper end, and a handle is provided at the lower end of the dustproof and rainproof cabinet door; a waterproof strip is provided at the joint between the dustproof and rainproof cabinet door and the shell.

3. The shared oxygen concentrator self-service locker according to claim 2, characterized in that, The main unit housing also includes a rear cover, which is hinged to the main unit housing via a fixed hinge, and the rear cover has a reserved opening for an electromagnetic lock.

4. The shared oxygen concentrator self-service locker according to claim 1, characterized in that, The bottom of the main unit compartment is provided with a first power / signal interface and a first jog switch, and the bottom of the battery compartment is provided with a second power / signal interface and a second jog switch. Both the main unit compartment and the battery compartment are equipped with hot-swap identification and anti-reverse insertion structure. The first jog switch and the second jog switch are triggered after the device is fully pressed in, sending a "returned" signal to the central controller and starting charging.

5. The shared oxygen concentrator self-service locker according to claim 1, characterized in that, The main engine compartment is equipped with a locking and ejection mechanism; The locking and ejection mechanism includes a servo motor, a rocker arm, a locking tongue, and a battery ejector. The servo motor is fixed to the inside of the side wall of the compartment, and its output shaft is located between the first rocker arm and the second rocker arm. The other end of the rocker arm passes through the latch lifting hole. The rocker arm can rotate around a fixed axis, and the latch can slide up and down in the linear guide groove provided on the bottom plate of the compartment. The battery ejector consists of a compression spring and a push rod, with the front end of the push rod abutting against the rear end of the battery. When the servo motor output shaft rotates downwards, the first rocker rotates, the first locking tongue slides upwards and disengages from the battery lock hole, and the compressed spring pushes the push rod to eject the battery. When the servo motor output shaft rotates upward, the second rocker arm rotates, and the second locking tongue slides downward and disengages from the oxygen generator locking hole, thus releasing the oxygen generator.

6. The shared oxygen concentrator self-service locker according to claim 1, characterized in that, The helical spring propulsion mechanism includes a spring, a guide sleeve, and an accessory package; The front end of the spring is fixed on the output shaft of the stepper motor. A guide sleeve is coaxially arranged outside the spring. Several accessory packages are arranged in the accessory compartment along the axial direction of the guide sleeve. The stepper motor drives the spring to rotate, sending the accessory packages one by one to the outlet end of the guide sleeve. The accessory packages fall one by one into the accessory retrieval channel by gravity or outlet baffle. A laser range sensor is installed on the opposite side of the accessory retrieval channel to detect and count the falling packages.

7. The shared oxygen concentrator self-service locker according to claim 6, characterized in that, The spiral spring propulsion mechanism is driven by a stepper motor, and pushes a nasal cannula to the accessory retrieval channel every 30° rotation.

8. The shared oxygen concentrator self-service locker according to claim 6, characterized in that, The parts retrieval channel is equipped with LED lights.

9. The shared oxygen concentrator self-service locker according to claim 1, characterized in that, The cabinet is also equipped with a storage location status indicator light.

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