A multifunction printer assembly and method of using the same

Abstract

The application discloses a multifunctional printer assembly structure and a use method thereof, and relates to the technical field of assembly shells. The multifunctional printer assembly structure comprises an upper cover, a window and an upper bin. The upper cover is provided with a mounting opening. The window is provided with a guide seat corresponding to a positioning column. The upper bin is provided with a protruding dam. The multifunctional printer assembly structure integrates three functional units, namely, quick positioning, final locking and sealing and pressing, into an integrated whole which cooperates with each other and acts in sequence. Through cooperation of the positioning column of the upper cover and the guide hole of the window, assembly difficulty and damage to a sealing surface caused by mispositioning are effectively avoided. Through cooperation of the inclined surface of the positioning buckle and the buckle fixing block, the components are prevented from loosening in vibration. The protruding dam of the upper bin and the corresponding surrounding edge of the window are designed as a sealing path which is pressed together. Through interference fit, a continuous and seamless sealing surface is formed, and liquid and dust are effectively prevented from invading.

Description

Technical Field

[0001] This invention relates to the field of assembly housing technology, specifically to an assembly structure for a multi-functional printer and its usage method. Background Technology

[0002] The most common assembly method in the industry is to use multiple threaded fasteners to directly lock the print cover and housing onto the printer's plastic or metal base.

[0003] Screw fixing stress concentration and structural creep: The huge preload generated when the screw is tightened will be concentrated at the root of the screw post. Under long-term action, the plastic screw post is prone to creep or even cracking, which will reduce the clamping force, cause the parts to loosen, and affect the printing quality.

[0004] Furthermore, its anti-loosening ability is poor. The continuous vibration of the equipment during transportation and use can easily cause the screws to loosen. Although adding spring washers or using self-tapping screws can solve the problem, it does not fundamentally solve the problem.

[0005] Waterproof sealing is difficult to guarantee. In order to achieve waterproofing, O-rings or sealing gaskets need to be installed on the screw head. The end face of the screw post must have a very high flatness, and each screw must be tightened evenly. Any poor sealing at any point will cause water vapor to enter from the screw hole, resulting in low waterproof reliability and low assembly efficiency.

[0006] Maintenance is inconvenient, as multiple screws need to be removed when performing maintenance or replacing parts, which increases the time and complexity of after-sales service.

[0007] The use of adhesives for bonding means that once bonded, it is almost impossible to disassemble without damage. Damage to any part or the need for maintenance can lead to the scrapping of the entire module or housing.

[0008] The strength of adhesives and their bonding force to different materials vary greatly. Under temperature cycling, moisture erosion or chemical solvents, the adhesive layer may age, become brittle or delaminate, leading to bonding failure.

[0009] The amount of adhesive used, the application location, the curing time, and the ambient temperature and humidity all affect the final bonding strength. This places stringent requirements on process control during production, and the bonding strength cannot be guaranteed to be consistent.

[0010] Riveting is similar to adhesive bonding; damage to any component means the replacement of the entire assembly, resulting in extremely poor maintainability and repairability.

[0011] The quality of hot riveting is greatly affected by the equipment power, pressure, time, and plastic material. Improper process parameters can lead to weak riveting or over-riveting that damages parts.

[0012] Furthermore, the rivet joint itself is not a sealed structure, and the molten plastic may not be able to completely fill the gap during the molding process, forming a water seepage channel.

[0013] Therefore, we propose a multi-functional printer assembly structure and its usage method to solve the above problems. Summary of the Invention

[0014] To address the shortcomings of existing technologies, this invention provides a multi-functional printer assembly structure and its usage method. It solves the problems of traditional assembly methods that rely on multiple screws for fastening, resulting in cumbersome assembly steps, low efficiency, and poor sealing. While a snap-fit ​​design is used, misalignment is prone to occur during initial positioning, leading to assembly difficulties, snap-fit ​​damage, or poor sealing.

[0015] To achieve the above objectives, the present invention provides the following technical solution: a multi-functional printer assembly structure and its usage method, comprising:

[0016] The top cover has an installation opening, and the outer edge of the installation opening is provided with multiple positioning posts and at least one positioning buckle.

[0017] A viewing window is provided with a guide seat corresponding to the positioning post. The guide seat has a guide hole. The viewing window has an installation hole corresponding to the positioning buckle. A buckle fixing block that cooperates with the positioning buckle is provided at the installation hole.

[0018] The upper warehouse is provided with a raised dam, and a fixed upper warehouse edge is provided on the frame of the raised dam. A fixed window edge is correspondingly provided on the frame of the window.

[0019] During assembly, the guide hole is fitted onto the positioning post for initial positioning, the upper compartment is pressed against the viewing window, and the viewing window is driven to move down, so that the positioning buckle and the buckle fixing block engage and lock together, while the upper compartment fixing edge and the viewing window fixing edge are pressed together to form a sealing frame.

[0020] Preferably, the guide hole is a through hole, and the guide seat is fitted into the guide hole and sleeved on the outer peripheral wall of the positioning post, and can slide along the axial direction of the positioning post.

[0021] Preferably, there are two positioning buckles, and each positioning buckle has a hook-shaped structure for locking with the buckle fixing block.

[0022] Preferably, the outer edge of the mounting port has a disassembly port.

[0023] Preferably, the raised dam is provided with a first pair of interfaces and a second pair of interfaces, and the window is provided with a first docking groove and a second docking groove respectively.

[0024] Preferably, mounting seats are provided on both sides of the inner wall of the upper cover, and a docking seat is provided on the upper compartment accordingly, and the docking seat is engaged with the mounting seat.

[0025] Preferably, the upper compartment fixed edge and the window fixed edge are fitted by an interference fit.

[0026] Preferably, a Hall sensor is embedded in the positioning buckle, a permanent magnet is embedded in the buckle fixing block, and a flexible thin-film pressure sensor array is integrated in the upper compartment fixing edge.

[0027] Preferably, the Hall sensor and the flexible thin-film pressure sensor array are electrically connected to the printer's motherboard.

[0028] Preferably, the Hall sensor is used to detect the distance to the permanent magnet and output a corresponding level signal to the motherboard to determine whether the window and the top cover are properly locked.

[0029] Preferably, the flexible thin-film pressure sensor array is used to detect the pressure distribution between the upper compartment fixed edge and the window fixed edge, and the main board is used to determine the assembly uniformity and whether the sealing pressure meets the standard based on the pressure distribution information, and to monitor pressure changes during long-term use to warn of loosening.

[0030] A method of using a multi-function printer assembly structure includes the following steps:

[0031] S1 Initial Positioning: Pick up the window, align the guide hole on the window with the positioning post of the upper cover and insert it. At this time, along the guide direction of the positioning post, press the window down smoothly relative to the upper cover so that the window is initially positioned on the upper cover.

[0032] S2 Press Down Locking and Edge Pressing: Align the protruding dam of the upper compartment with the viewing window, align the fixed edge of the upper compartment with the fixed edge of the viewing window, and press down the upper compartment;

[0033] Driven by the downward pressure of the upper compartment, the window moves down along the positioning post, causing the positioning buckle and the buckle fixing block to elastically deform and lock together. While the positioning buckle and the buckle fixing block are locked, the upper compartment is pressed together, causing the window fixing edge on the window to cooperate with the upper compartment fixing edge to form a sealing path and a rigid frame structure.

[0034] S3 Status Monitoring: Based on the assembly process in step S2 and subsequent use, the locking status is monitored by Hall sensors, and the pressure status of the sealing surface is monitored by a flexible thin-film pressure sensor array. The average pressure is used to determine whether the fixed edge of the window and the fixed edge of the upper compartment have been pressed and sealed. The pressure is monitored over a long period of time.

[0035] This invention discloses a multi-functional printer assembly structure, which has the following beneficial effects:

[0036] This multi-functional printer assembly structure achieves precise XY plane guidance in the initial stage of assembly through the cooperation of the positioning post of the upper cover and the guide hole of the viewing window. This ensures the unique and correct relative position of the viewing window and the upper cover, effectively avoiding assembly difficulties and damage to the sealing surface caused by misalignment. It lays the foundation for subsequent precision pressing and integrates the three functional units of rapid positioning, final locking and sealing into a whole that works in synergy and sequence.

[0037] Through the precise cooperation of the guide hole and the positioning post, the operator is guided to press down along the only correct path, ensuring that the buckle can be accurately engaged and the edge can be evenly pressed, avoiding poor sealing or structural damage caused by misalignment. This achieves a foolproof high-quality assembly. By utilizing the inclined surface cooperation between the positioning buckle and the buckle fixing block, elastic deformation and springback locking are achieved during the final press. The buckle mechanism provides the main vertical locking force to prevent the parts from loosening during vibration.

[0038] The raised dam of the upper compartment and the corresponding edge of the viewing window are designed as a mutually pressing sealing path. Through interference fit, a continuous and seamless sealing surface is formed, which effectively prevents liquid and dust from entering. Its reliability is superior to that of traditional screw hole point seals. At the same time, the interlocking and pressing edges together form a high-rigidity box-shaped or frame structure, which enhances the bending, torsion and vibration impact resistance of the area. The traditional simple reinforcing rib is innovatively given the dual function of sealing and pressing surface and vibration-resistant frame, achieving efficient waterproofing and anti-loosening.

[0039] The docking structure between the upper compartment and the viewing window, as well as the side snap-fit ​​between the upper cover and the upper compartment, ensures the stable installation of the three main components. The disassembly port facilitates the safe separation of the snap-fit ​​using tools during maintenance, enabling non-destructive disassembly.

[0040] Real-time assembly quality assessment: Hall sensors are integrated at the positioning buckles, and permanent magnets are set at the corresponding buckle fixing blocks. The changes in the magnetic field signal accurately determine whether the buckles are locked in place, fundamentally avoiding the hidden dangers of false locking or improper assembly.

[0041] A flexible thin-film pressure sensor array is integrated into the fixed edge of the upper compartment, which can monitor the clamping force at each point on the sealing surface in real time. By analyzing the average pressure and the uniformity of distribution, it can determine whether there is any skew, gap or interference at the moment of assembly, so as to ensure that the sealing quality meets the standards.

[0042] During long-term use of the equipment, the signal stability of the latching state and the pressure distribution changes of the sealing surface are continuously monitored. Once signal attenuation or pressure abnormality is detected due to vibration, material creep, or other reasons, a warning can be issued through a three-color indicator light or other means, thereby achieving predictive maintenance and intervening before the problem causes functional failure. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the installation of the top cover and the viewing window of the present invention;

[0046] Figure 3 This is a schematic diagram of the installation of the window and upper compartment of the present invention;

[0047] Figure 4 This is a schematic diagram of the upper cover structure of the present invention;

[0048] Figure 5 This is a schematic diagram of the upper warehouse structure of the present invention;

[0049] Figure 6 This is a schematic diagram of the window structure of the present invention;

[0050] Figure 7 This is a schematic diagram of the structure at the other end of the window of the present invention;

[0051] Figure 8 This is a cross-sectional view of the assembly of the present invention;

[0052] Figure 9 This is a flowchart illustrating the installation and monitoring process of the top cover and viewing window of the present invention.

[0053] Figure 10 This is a flowchart of the installation and monitoring process for the upper warehouse and viewing window of this invention;

[0054] Figure 11 This is a flowchart illustrating the collaborative judgment process for assembly signal data in this invention.

[0055] In the diagram: 1. Top cover; 11. Mounting port; 12. Positioning post; 13. Positioning buckle; 14. Disassembly port; 15. Mounting base; 2. Viewing window; 21. Connecting plate; 211. First mating groove; 212. Second mating groove; 213. Viewing window fixing edge; 22. Guide seat; 221. Guide hole; 23. Mounting hole; 24. Buckle fixing block; 3. Upper compartment; 31. Protruding dam; 311. First mating interface; 312. Second mating interface; 32. Upper compartment fixing edge; 33. Mating base. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] This application provides a multi-functional printer assembly structure and its usage method, solving the problems of traditional assembly methods that rely on multiple screws for fastening, resulting in cumbersome assembly steps, low efficiency, and poor sealing. While a snap-fit ​​design is used, misalignment is prone to occur during initial positioning, leading to assembly difficulties, snap-fit ​​damage, or poor sealing. This application achieves precise XY plane guidance in the initial assembly stage through the cooperation of the positioning post of the upper cover and the guide hole of the viewing window, ensuring the unique and correct relative position of the viewing window and the upper cover. This effectively avoids assembly difficulties and damage to the sealing surface caused by misalignment, laying the foundation for subsequent precision pressing. It integrates the three functional units of rapid positioning, final locking, and sealing pressing into a cohesive whole that works in sequence.

[0058] Through the precise cooperation of the guide hole and the positioning post, the operator is guided to press down along the only correct path, ensuring that the buckle can be accurately engaged and the edge can be evenly pressed, avoiding poor sealing or structural damage caused by misalignment. This achieves a foolproof high-quality assembly. By utilizing the inclined surface cooperation between the positioning buckle and the buckle fixing block, elastic deformation and springback locking are achieved during the final press. The buckle mechanism provides the main vertical locking force to prevent the parts from loosening during vibration.

[0059] The raised dam of the upper compartment and the corresponding edge of the viewing window are designed as a mutually pressing sealing path. Through interference fit, a continuous and seamless sealing surface is formed, which effectively prevents liquid and dust from entering. Its reliability is superior to that of traditional screw hole point seals. At the same time, the interlocking and pressing edges together form a high-rigidity box-shaped or frame structure, which enhances the bending, torsion and vibration impact resistance of the area. The traditional simple reinforcing rib is innovatively given the dual function of sealing and pressing surface and vibration-resistant frame, achieving efficient waterproofing and anti-loosening.

[0060] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0061] This invention discloses a multi-functional printer assembly structure and its usage method.

[0062] According to the appendix Figure 1-11 As shown, it includes an upper cover 1, a viewing window 2, and an upper compartment 3;

[0063] The upper cover 1 has an installation opening 11, and four symmetrically distributed positioning posts 12 and at least one positioning buckle 13 are provided on the outer edge of the installation opening 11.

[0064] The window 2 has a guide seat 22 corresponding to the positioning post 12, and a guide hole 221 is provided on the guide seat 22. The window 2 has an installation hole 23 corresponding to the positioning buckle 13.

[0065] The viewing window 2 is a movable functional component, and its mounting plate 21 can be made of transparent or translucent material to allow observation of the paper roll's condition.

[0066] The guide hole 221 is a through hole. The guide seat 22 fits the guide hole 221 and is sleeved on the outer peripheral wall of the positioning post 12. It can slide along the axial direction of the positioning post 12. The function of the positioning post 12 is to serve as a guide for the initial assembly, ensuring that the window 2 moves to the upper cover 1 in the only correct relative position through the guide hole 221 on the guide seat 22, thus avoiding poor sealing or structural damage caused by misalignment.

[0067] At this time, the guide hole 221 slides along the outer peripheral wall of the positioning post 12, so that the window 2 fits against the upper cover 1, and the mounting hole 23 on the window 2 is set with the positioning buckle 13. There is at least one positioning buckle 13. In this embodiment, there are two positioning buckles 13. The positioning buckle 13 is designed with a hook structure. The hook structure on the positioning buckle 13 is used to finally lock with the buckle fixing block 24 corresponding to the window 2.

[0068] In the initial stage of assembly, the positioning post 12 is inserted into the guide hole 221, and then the viewing window 2 slides along the outer peripheral wall of the positioning post 12 through the guide hole 221 on the guide seat 22, which plays the role of rough positioning and preventing horizontal movement, and prepares for the subsequent precise pressing of the viewing window 2 and the upper cover 1.

[0069] When the window 2 approaches the mounting port 11 on the upper cover 1, and is limited by the positioning post 12, the snap-fit ​​plate 21 on the window 2 is set to correspond to the mounting port 11, and the mounting hole 23 on the window 2 contacts the positioning buckle 13. At this time, the window 2 can be placed on the upper cover 1.

[0070] At this point, the upper compartment 3 can be placed corresponding to the viewing window 2, and then the upper compartment 3 can be pushed to press against the viewing window 2, so that the viewing window 2 is pressed down and moves relative to the upper cover 1. When the viewing window 2 is pressed down into place, the latching block 24 on the viewing window 2 and the positioning latch 13 on the upper cover 1 are locked together, forming the main vertical locking force. When the latching block 24 and the positioning latch 13 are engaged, a clicking sound will be made due to the squeezing, providing a clear sense of assembly in place.

[0071] The outer edge of the mounting port 11 is also provided with a disassembly port 14. By setting the disassembly port 14, it is easy to disassemble the window 2 in the subsequent process. By inserting a tool into the gap of the disassembly port 14, the tool is placed between the upper cover 1 and the window 2. At this time, the window 2 can be removed from the upper cover 1, so that the buckle fixing block 24 on the window 2 is separated from the positioning buckle 13.

[0072] The upper compartment 3 has a continuous raised dam structure 31 extending downward from the top surface. The raised dam 31 is provided with an upper compartment fixed edge 32. The window 2 is provided with a window fixed edge 213 corresponding to the upper compartment fixed edge 32. The inner wall and / or end face of the upper compartment fixed edge 32 will form a tight fit with the corresponding window fixed edge 213 of the window 2.

[0073] By transforming traditional edging structures, which are merely used for reinforcement or aesthetics, into structures that function as both sealed compression surfaces and vibration-resistant frames, a highly efficient waterproof and anti-loosening structural foundation is achieved.

[0074] The raised dam 31 is provided with a first pair of interfaces 311 and a second pair of interfaces 312. The window 2 is provided with a first docking groove 211 and a second docking groove 212 corresponding to the first pair of interfaces 311 and the second pair of interfaces 312, respectively. The first docking groove 211 docks with the first pair of interfaces 311, and the second docking groove 212 docks with the second pair of interfaces 312, thereby facilitating the docking of the upper warehouse 3 with the window 2.

[0075] The upper compartment fixed edge 32 is set on the frame of the raised dam 31, and the window fixed edge 213 is set on the frame of the window 2 corresponding to the upper compartment fixed edge 32. When the upper compartment 3 is pushed to complete the assembly with the window 2, the window fixed edge 213 and the upper compartment fixed edge 32 form a compliant relationship, that is, they fit, squeeze or nest with each other. The mating surfaces of the window fixed edge 213 and the upper compartment fixed edge 32 form a continuous and seamless sealing path, thereby completing the connection between the upper compartment 3 and the window 2. When the upper compartment 3 is pushed to assemble with the window 2, the upper compartment 3 pushes the window 2 to engage with the upper cover 1. At this time, the upper cover 1 and the window 2 are assembled, and the upper cover 1 and the upper compartment 3 are also assembled. This makes the upper cover 1, the window 2 and the upper compartment 3 together form a high-rigidity box-shaped or frame structure, ensuring the stability of the connection between the window 2 and the upper cover 1 and the upper compartment 3, and completing the assembly.

[0076] Mounting seats 15 are provided on both sides of the inner wall of the upper cover 1. A docking seat 33 is provided on the upper compartment 3 corresponding to the mounting seats 15 on the upper cover 1. The docking seat 33 and the mounting seat 15 are engaged to connect the upper cover 1 and the upper compartment 3, thereby improving the stability of the window 2 in the upper cover 1 and the upper compartment 3.

[0077] A sealing ring, sealing rib, or elastic sealing layer is provided on the mating surface of the upper compartment fixed edge 32;

[0078] The upper warehouse fixed edge 32 and the window fixed edge 213 are fitted by an interference fit or a beveled guide fit.

[0079] Installation steps:

[0080] Step 1: Initial positioning. Pick up the viewing window 2 and align the multiple guide holes 221 on the viewing window 2 with the multiple positioning posts 12 on the upper cover 1 and fit it in. At this time, along the guide direction of the positioning posts 12, press the viewing window 2 down smoothly relative to the upper cover 1 so that the viewing window 2 is initially positioned on the upper cover 1. In this stage, the cooperation between the guide holes 221 and the positioning posts 12 eliminates the misalignment in the XY plane and ensures the accuracy of subsequent actions.

[0081] Step 2: Press down to lock and press the upper compartment 3 together with the window 2, align the protruding dam 31 of the upper compartment 3 with the window fixed edge 32, and align the upper compartment fixed edge 213 with the window fixed edge 213. Press down the upper compartment 3.

[0082] Driven by the downward pressure of the upper compartment 3, the viewing window 2 moves down along the positioning post 12. The upper compartment 3 presses down on the viewing window 2. At this time, the inclined surface of the latching block 24 on the viewing window 2 contacts the inclined surface of the positioning latch 13 on the upper cover 1 and undergoes elastic deformation. When pressed to the final position, the positioning latch 13 and the latching block 24 pass each other's highest point. Under the action of elastic restoring force, they quickly rebound and hook into each other, making a crisp sound. At this time, the latching mechanism provides the main locking force to prevent the viewing window 2 from bouncing up or loosening during vibration.

[0083] Step 3: Formation of sealing and rigid frame. While the positioning buckle 13 and the buckle fixing block 24 are locked, the upper compartment 3 is pressed together, so that the window fixing edge 213 on the window 2 and the upper compartment fixing edge 32 on the upper compartment 3 cooperate to complete the smooth fitting and pressing.

[0084] Furthermore, the mating surfaces of the upper compartment fixed edge 32 and the window fixed edge 213 form a continuous and seamless sealing path. Since the window 2 and the upper compartment 3 are made of plastic, the interference fit of the plastic parts themselves blocks potential channels for liquid and dust intrusion, forming a surface seal that is more reliable than the point seal of the screw hole.

[0085] Furthermore, the interlocking and pressing window fixing edge 213 and upper compartment fixing edge 32 together form a highly rigid box-shaped or frame-like structure. This structure enhances the bending and torsion resistance of this area and can effectively resist vibration and impact from all directions, ensuring the absolute stability of the connection between the window 2 and the upper compartment 3 and achieving anti-loosening.

[0086] A small Hall sensor is embedded in the positioning buckle 13, and a small permanent magnet is embedded in the buckle fixing block 24 on the window 2 corresponding to the positioning buckle 13. When the window 2 is installed in place, the distance between the magnet and the Hall sensor reaches the preset minimum value. The sensor senses the change in magnetic field strength and outputs a specific level signal. This signal is recognized by the motherboard as an in-place signal. Then, the motherboard uses this signal to determine whether the positioning buckle 13 and the buckle fixing block 24 between the top cover 1 and the window 2 have been locked, so as to avoid the buckle not being properly engaged. During use, the loosening caused by vibration or other factors will affect the normal use of the printer.

[0087] A flexible thin-film pressure sensor array is integrated at 32 fixed edges of the upper compartment. This array contains multiple tiny pressure sensing units, and the sensor lines are led out through a micro connector and connected to the motherboard.

[0088] When the upper compartment fixed edge 32 presses against the window fixed edge 213 on the window 2, pressure sensors at different positions will detect the clamping force and read the pressure value at each point through the motherboard. If the pressure at a certain point is too low, it indicates that there is a gap. If the pressure is abnormally high, it may indicate that there is interference or improper assembly.

[0089] This allows for the assessment of assembly quality and monitoring of pressure distribution changes during long-term use, preventing material creep-induced decay or loosening due to prolonged vibration, thus enabling early maintenance.

[0090] Furthermore, a three-color indicator light is integrated on the top cover 1. When the installation is qualified, it is constantly green; when the installation is not in place or becomes loose later, it is constantly yellow; and when the assembly is not qualified or the sealing is abnormal, it is constantly red.

[0091] A method of using a multi-function printer assembly structure includes the following steps:

[0092] S1 Initial positioning: Pick up the window 2, align the guide hole 221 on the window 2 with the positioning post 12 of the upper cover 1 and fit it in. At this time, along the guide direction of the positioning post 12, press the window 2 down smoothly relative to the upper cover 1 so that the window 2 is initially positioned on the upper cover 1.

[0093] S2 Press down to lock and press the edge together: Align the protruding dam 31 of the upper compartment 3 with the viewing window 2, and align the fixed edge 32 of the upper compartment with the fixed edge 213 of the viewing window, and press down the upper compartment 3;

[0094] Driven by the downward pressure of the upper chamber 3, the viewing window 2 moves down along the positioning post 12, causing the positioning buckle 13 and the buckle fixing block 24 to elastically deform and lock together. While the positioning buckle 13 and the buckle fixing block 24 are locked together, the upper chamber 3 is pressed together, causing the viewing window fixing edge 213 on the viewing window 2 and the upper chamber fixing edge 32 on the upper chamber 3 to cooperate and press together to form a sealing path and a rigid frame structure.

[0095] S3 Status Monitoring: Based on the assembly process in step S2 and subsequent use, the locking status is monitored by Hall sensors, the pressure status of the sealing surface is monitored by a flexible thin-film pressure sensor array, and the average pressure is used to determine whether the fixed edge 213 of the window 2 and the fixed edge 32 of the upper compartment 3 have been pressed and sealed. The pressure is monitored over a long period of time.

[0096] During the installation of window 2, the guide hole 221 on window 2 is first fitted onto the outer peripheral wall of the positioning post 12 on the upper cover 1. At this time, window 2 is defined in the XY plane. Then, window 2 is first placed on the upper cover 1, and then window 2 is moved along the guide direction of positioning post 12 so that the mounting hole 23 on window 2 is fitted onto the outer peripheral wall of positioning buckle 13.

[0097] Furthermore, at this time, there is a positional difference between the small Hall sensor embedded in the positioning buckle 13 and the permanent magnet embedded in the buckle fixing block 24. During the placement process, the Hall sensor outputs a signal in real time. If the signal is not in the high threshold range, it means that the installation has not started and the state is not ready.

[0098] At this time, the upper warehouse fixed edge 32 opened at the protruding dam 31 on the upper warehouse 3 is aligned with the window fixed edge 213 on the window 2 and lowered. At the same time, under the action of the first docking groove 211 and the second docking groove 212 set on the snap-fit ​​plate 21, the first docking groove 211 and the second docking groove 212 are respectively attached to the first pair of interfaces 311 and the second pair of interfaces 312, thereby completing the docking of the upper warehouse 3 and the window 2.

[0099] Furthermore, since a flexible thin-film pressure sensor array is set at the fixed edge 32 of the upper compartment, the flexible thin-film pressure sensor contacts the fixed edge 213 of the window. At this time, by pressing down the upper compartment 3, the protruding dam 31 on the upper compartment 3 is pressed down towards the window 2. At this time, the protruding dam 31 is squeezed by the flexible thin-film pressure sensor at the fixed edge 32 of the upper compartment and the fixed edge 213 of the window 2.

[0100] At this time, the pressure sensor array signal is read to obtain the pressure value of all unit point pressure sensors. During the downward pressing process, the overall pressure average value is calculated to determine whether the average pressure and the pressure difference of all unit points exceed the set pressure difference threshold.

[0101] When the pressure difference exceeds the set threshold, it is determined that the pressure distribution is uneven, which is then a pressure offset, leading to assembly interference. Specifically, the upper chamber fixed edge 32 and the window fixed edge 213 on the window 2 are misaligned, and the window fixed edge 213 on the window 2 and the upper chamber fixed edge 32 on the upper chamber 3 cannot be effectively matched. There is a leakage point in the sealing path formed by the mating surfaces of the upper chamber fixed edge 32 and the window fixed edge 213, which makes it impossible to seal effectively. At this time, the upper chamber 3 needs to be removed and the window 2 and the upper chamber 3 reconnected. In this case, the three-color indicator light turns red, indicating that the assembly cannot be completed successfully.

[0102] During the pressing process, if the pressure difference threshold is not exceeded, the pressure distribution is uniform, and the pressing can continue to install the window 2 and the upper compartment 3. When the upper compartment 3 presses down on the window 2, the window 2 is pressed down and installed with the upper cover 1.

[0103] When the upper chamber 3 continues to be pressed down, the upper chamber fixed edge 32 on the upper chamber 3 continues to cooperate with the window fixed edge 213 on the window 2. Since the window 2 and the upper chamber 3 are plastic parts, the interference fit of the plastic parts themselves blocks the potential channels for liquid and dust intrusion, forming a surface seal that is more reliable than the point seal of the screw hole.

[0104] By reading the signal from the pressure sensor array, it is determined whether the average pressure has reached the sealing threshold. If the sealing threshold has not been reached, the sealing pressure is insufficient, and the pressure can continue to be pressed down. The three-color indicator light will turn yellow, indicating that the installation is not complete and the pressure needs to be continued.

[0105] As the upper chamber 3 continues to press down relative to the viewing window 2 until the average pressure reaches the sealing threshold, the viewing window fixed edge 213 of the viewing window 2 and the upper chamber fixed edge 32 of the upper chamber 3 are pressed together to form a seal, realizing the interference fit between the viewing window 2 and the upper chamber 3 to form a surface seal, creating a continuous and seamless sealing path. After the overall assembly is completed, the pressure between the viewing window 2 and the upper chamber 3 is continuously monitored to determine whether the pressure is at the sealing threshold, ensuring that it is always effectively waterproof and dustproof.

[0106] Furthermore, when the upper compartment 3 presses down on the viewing window 2, the pressure on the viewing window 2 from the upper compartment 3 is converted into pressure on the upper cover 1. At this time, the viewing window 2 is pushed down along the positioning post 12 through the guide hole 221. At this time, the mounting hole 23 is pressed down along the positioning buckle 13. As a result, there is a position difference between the small Hall sensor embedded in the positioning buckle 13 and the permanent magnet embedded in the buckle fixing block 24, and it is determined whether its output signal reaches the set locking threshold range.

[0107] When the locking threshold range is not reached, the installation process between the top cover 1 and the window 2 is underway. At this time, the Hall sensor outputs the installation process signal in real time until the output signal reaches the locking range. It can be known that the inclined surface of the positioning buckle 13 on the top cover 1 contacts the inclined surface of the buckle fixing block 24 on the window 2, and elastic deformation occurs, thus completing the snap-fit ​​between the window 2 and the top cover 1.

[0108] Furthermore, during subsequent use, it is necessary to determine whether the output signal is stable. When the output signal is stable, the connection between the top cover 1 and the window 2 is stable.

[0109] When the output signal is unstable and fluctuates, it is caused by vibration during use or transportation. Record the abnormal fluctuations and monitor them continuously. When the output signal is not within the locking threshold range, it can be determined that the assembly is loose and needs to be tightened again.

[0110] Furthermore, during long-term use, monitoring for changes in pressure distribution helps prevent material creep from causing attenuation or loosening due to long-term vibration, enabling early maintenance and ensuring the installation stability of window 2 and top cover 1, as well as window 2 and top compartment 3.

[0111] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional printer assembly structure, characterized in that, include: The top cover (1) has an installation opening (11) on it, and the outer edge of the installation opening (11) is provided with multiple positioning posts (12) and at least one positioning buckle (13). A guide seat (22) is provided on the window (2) corresponding to the positioning post (12). A guide hole (221) is provided on the guide seat (22). An installation hole (23) is provided on the window (2) corresponding to the positioning buckle (13). A buckle fixing block (24) that cooperates with the positioning buckle (13) is provided at the installation hole (23). The upper warehouse (3) is provided with a raised dam (31), and the upper warehouse fixed rim (32) is provided on the frame of the raised dam (31), and the window fixed rim (213) is provided on the frame of the window (2). During assembly, the guide hole (221) is fitted onto the positioning post (12) for initial positioning, the upper compartment (3) is pressed against the viewing window (2), and the viewing window (2) is driven to move down, so that the positioning buckle (13) and the buckle fixing block (24) engage and lock each other, and at the same time, the upper compartment fixing edge (32) and the viewing window fixing edge (213) are pressed together to form a sealing frame; A Hall sensor is embedded in the positioning buckle (13), a permanent magnet is embedded in the buckle fixing block (24), and a flexible thin film pressure sensor array is integrated in the upper compartment fixing edge (32). The Hall sensor and flexible thin-film pressure sensor array are electrically connected to the printer's mainboard. The Hall sensor is used to detect the distance to the permanent magnet and output a corresponding level signal to the motherboard to determine whether the window (2) and the top cover (1) are properly locked. The flexible thin-film pressure sensor array is used to detect the pressure distribution between the upper compartment fixed edge (32) and the window fixed edge (213). The main board is used to determine the assembly uniformity and whether the sealing pressure meets the standard based on the pressure distribution information, and to monitor pressure changes during long-term use to warn of loosening.

2. The multi-functional printer assembly structure according to claim 1, characterized in that, The guide hole (221) is a through hole, and the guide seat (22) is fitted with the guide hole (221) and sleeved on the outer peripheral wall of the positioning post (12), and can slide along the axial direction of the positioning post (12).

3. The multi-functional printer assembly structure according to claim 1, characterized in that, There are two positioning buckles (13), and each positioning buckle (13) has a hook-shaped structure for locking with the buckle fixing block (24).

4. The multi-functional printer assembly structure according to claim 1, characterized in that, The mounting port (11) has a disassembly port (14) on its outer edge.

5. The multi-functional printer assembly structure according to claim 1, characterized in that, The raised dam (31) is provided with a first pair of interfaces (311) and a second pair of interfaces (312), and the window (2) is provided with a first docking groove (211) and a second docking groove (212).

6. The multi-functional printer assembly structure according to claim 1, characterized in that, The inner walls of the upper cover (1) are provided with mounting seats (15) on both sides, and the upper compartment (3) is provided with a corresponding docking seat (33), which is engaged with the mounting seat (15).

7. The multi-functional printer assembly structure according to claim 1, characterized in that, The upper warehouse fixed edge (32) and the window fixed edge (213) are fitted by an interference fit.

8. A method of using a multi-functional printer assembly structure, as described in any one of claims 1-7, characterized in that, Includes the following steps: S1 Initial positioning: Pick up the window (2), align the guide hole (221) on the window (2) with the positioning post (12) of the upper cover (1) and put it in. At this time, along the guiding direction of the positioning post (12), press the window (2) down smoothly relative to the upper cover (1) so that the window (2) is initially positioned on the upper cover (1). S2 Press down to lock and press the edge together: Align the raised edge (31) of the upper compartment (3) with the window (2) and align the fixed edge (32) of the upper compartment with the fixed edge (213) of the window, and press down the upper compartment (3). Driven by the downward pressure of the upper compartment (3), the window (2) moves down along the positioning post (12), causing the positioning buckle (13) and the buckle fixing block (24) to elastically deform and lock together. While the positioning buckle (13) and the buckle fixing block (24) are locked together, the upper compartment (3) is pressed together, causing the window fixing edge (213) on the window (2) and the upper compartment fixing edge (32) on the upper compartment (3) to cooperate and press together to form a sealing path and a rigid frame structure. S3 Status Monitoring: Based on the assembly process of step S2 and subsequent use, the locking status is monitored by Hall sensor, the pressure status of the sealing surface is monitored by flexible thin film pressure sensor array, and the average pressure is used to determine whether the fixed edge (213) of the window (2) and the fixed edge (32) of the upper compartment (3) have been pressed and sealed. The pressure is monitored for a long time by flexible thin film pressure sensor array.

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