Printer with waterproof and dehumidifying performance

Abstract

The utility model relates to the technical field of printer, it discloses a kind of printer with waterproof dehumidification performance including shell, dehumidification box, waterproof movement, paper cutting assembly and circuit board, the dehumidification box, the waterproof movement, paper cutting assembly and circuit board are all installed in the shell, the circuit board is respectively connected with the waterproof movement and the paper cutting assembly, the shell is equipped with paper roll storehouse and water guide groove, the waterproof cover is installed in the shell, the paper roll storehouse is communicated with the dehumidification box by the water guide groove, the dehumidification box is installed in the bottom of the shell, the waterproof movement, the paper cutting assembly and the circuit board are all coated with waterproof coating.The utility model solves the situation that printer is in humid, water vapor leakage or water drop accidentally splashes into printer and causes short circuit and cannot use, with low cost, safe, easy to operate, waterproof reliable advantage.

Description

Technical Field

[0001] This utility model relates to the technical field of printers, and more particularly to a printer with waterproof and dehumidifying properties. Background Technology

[0002] Printers are used in a wide range of environments and occasions, especially in kitchens or humid environments. Water droplets and moisture can easily enter the printer. The exposed electronic circuits inside the printer are prone to short circuits under the influence of water droplets. In mild cases, the printer will burn out and become unusable. In severe cases, it can cause a fire due to a short circuit.

[0003] Traditional printer waterproofing involves installing a waterproof cover on the machine casing. However, since water droplets can splash into the printer from all directions, the waterproof cover cannot completely block water droplets from all directions, nor can it prevent leakage of water vapor, resulting in an unsatisfactory waterproofing effect. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a printer with waterproof and dehumidifying properties.

[0005] The objective of this utility model is achieved through the following technical solution: A printer with waterproof and dehumidifying properties includes a housing, a dehumidifying box, a waterproof mechanism, a paper cutting assembly, and a circuit board. The dehumidifying box, the waterproof mechanism, the paper cutting assembly, and the circuit board are all installed in the housing. The circuit board is connected to the waterproof mechanism and the paper cutting assembly respectively. The housing is provided with a paper roll compartment and a water guide channel. The waterproof cover is installed in the housing. The paper roll compartment is connected to the dehumidifying box through the water guide channel. The dehumidifying box is installed at the bottom of the housing. The waterproof mechanism, the paper cutting assembly, and the circuit board are all coated with a waterproof coating.

[0006] A better alternative is that the waterproof mechanism includes a mechanism body, a reduction gear set, a gear cover plate, a heating base plate, a heating element, a printing roller switch plate, a ribbon cable, and a paper feed roller. The paper feed motor is mounted on the housing via the mechanism body. The gear cover plate and the mechanism body are connected to form a gear compartment. The reduction gear set is mounted in the gear compartment. The paper feed motor is connected to the paper feed roller via the reduction gear set. The heating base plate and the printing roller switch plate are both rotatably connected to the mechanism body via a base plate shaft. The two ends of the printing roller switch plate are located on both sides of the heating base plate. The heating element is connected to the heating base plate and corresponds to the paper feed roller. The paper feed roller can be embedded in the end of the printing roller switch plate near the heating element. The paper feed roller and the heating element both correspond to the paper cutting assembly. The paper detection sensor corresponds to the paper feed roller. The connection between the heating element and the ribbon cable, as well as the paper feed motor, are coated with the waterproof coating.

[0007] A better option also includes a waterproof cover, wherein the outer casing has a paper outlet and the waterproof cover is located at the paper outlet.

[0008] A better option is that the paper cutting assembly includes a moving blade structure and a fixed blade structure, the moving blade structure being mounted on top of the waterproof mechanism, the moving blade structure matching the fixed blade structure, and the moving blade structure being coated with the waterproof coating.

[0009] A preferred embodiment includes a cutting upper housing, a cutting motor, a worm gear, a drive gear, a cutting lower housing, a cutting spring, a moving blade, a cutting bracket, a sliding push rod, and an intermittent gear. The cutting upper housing is connected to the cutting lower housing, which is mounted on the top of the waterproof mechanism via the cutting bracket. The moving blade is slidably mounted on the cutting lower housing via the cutting spring. The drive gear is connected to the moving blade via the sliding push rod. The worm gear can drive the drive gear to move, and the intermittent gear can drive the drive gear to rotate. The cutting motor is connected to the intermittent gear via the worm gear and is mounted on the cutting lower housing. The cutting motor is connected to the circuit board and is coated with the waterproof coating.

[0010] A better option is that the moving blade is provided with a strip-shaped groove, the lower end of the sliding push rod is slidably connected to the groove, the drive gear is provided with an eccentric hole, and the upper end of the sliding push rod is installed in the eccentric hole.

[0011] A better option is that the fixed blade structure includes a fixed blade holder and a fixed blade. The fixed blade is mounted on the upper cover of the housing via the fixed blade holder. The fixed blade corresponds to the moving blade structure. The waterproof mechanism is rotatably connected to the fixed blade holder.

[0012] A better option is that the dehumidifier box is equipped with a desiccant.

[0013] A preferred option is that the desiccant is one of calcium chloride, silica gel, activated carbon, water-absorbing resin, or quicklime.

[0014] A better option is that the waterproof coating is one of acrylic conformal coating, polyurethane conformal coating, silicone, parylene, fluorine-modified nano-coating, PECVD coating, or water-based conformal coating.

[0015] This utility model has the following advantages and beneficial effects compared to the prior art:

[0016] This utility model features a waterproof mechanism, paper cutting assembly, and circuit board with a waterproof coating on their surfaces. Water is guided into the dehumidification box through a water channel in the outer casing. This solves the problem of printers becoming unusable due to humidity, moisture leakage, or accidental water droplets splashing into the printer, causing short circuits. It has the advantages of low cost, safety, simple operation, and reliable waterproofing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a printer with waterproof and dehumidifying properties according to this utility model;

[0018] Figure 2 This is a cross-sectional view of a printer with waterproof and dehumidifying properties according to this utility model;

[0019] Figure 3 This is a schematic diagram of a waterproof mechanism for a printer with waterproof and dehumidifying properties according to this utility model;

[0020] Figure 4 This is an exploded view of the waterproof mechanism of a printer with waterproof and dehumidifying properties according to this utility model.

[0021] Figure 5 This is an assembly diagram of the heating substrate, heating element, and ribbon cable of a printer with waterproof and dehumidifying properties according to this utility model.

[0022] Figure 6 This is an exploded view of the top cover and fixed blade structure of a printer with waterproof and dehumidifying properties according to this utility model.

[0023] Figure 7 This is an exploded view of the moving blade structure of a printer with waterproof and dehumidifying properties according to this utility model;

[0024] Figure 8 This is an exploded view of the internal components of the moving blade structure of a printer with waterproof and dehumidifying properties according to this utility model.

[0025] The components in the attached diagram are labeled as follows: 1-Waterproof cover; 2-Outer shell; 201-Upper cover; 2011-Paper outlet; 202-Lower shell; 2021-Paper roll compartment; 2022-Water guide channel; 3-Dehumidifier box; 4-Waterproof mechanism; 401-Mechanical mechanism body; 4011-Detection port; 402-Paper feed motor; 403-Reduction gear set; 404-Gear cover plate; 405-Heating base plate; 4051-Base plate shaft; 406-Heating element; 407-Printing roller switch plate; 408- Paper detection sensor; 409-Cable; 410-Waterproof coating; 411-Paper feed roller; 5-Paper cutting assembly; 501-Upper cutter housing; 502-Cutter motor; 503-Worm gear; 504-Drive gear; 5041-Eccentric hole; 505-Lower cutter housing; 506-Cutter spring; 507-Moving blade; 5071-Groove; 508-Cutter fixing bracket; 509-Sliding push rod; 510-Intermittent gear; 511-Fixed blade holder; 512-Fixed blade; 6-Circuit board. Detailed Implementation

[0026] The utility model objective of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of this utility model is not limited to the following embodiments.

[0027] like Figure 1 and 2 As shown, a printer with waterproof and dehumidifying properties includes a waterproof cover 1, a housing 2, a dehumidifying box 3, a waterproof mechanism 4, a paper cutting assembly 5, and a circuit board 6. The housing 2 includes an upper cover 201 and a lower housing 202. The lower housing 202 has a paper roll compartment 2021 inside, with the bottom of the paper roll compartment 2021 connected to the upper end of a water guide channel 2022. The lower end of the water guide channel 2022 communicates with a dehumidifying box mounting position at the bottom of the housing 2. A dehumidifying box 3 is detachably installed in the dehumidifying box mounting position at the bottom of the lower housing 202. The upper cover 201 and the lower housing 202 are connected to form a device mounting cavity, and the upper cover 201 can be rotatably connected relative to the lower housing 202. The upper cover 201 has a paper output port 2011, and the waterproof cover 1 covers the paper output port 2011 and is snap-fitted to the upper cover 201. The paper cutting assembly 5 is located below the paper outlet 2011, and the waterproof mechanism 4 is located below the paper cutting assembly 5. Both the paper cutting assembly 5 and the waterproof mechanism 4 are connected to the circuit board 6 via wires. The circuit board 6 is mounted on the lower inner wall of the equipment mounting cavity by bolts.

[0028] The waterproof cover 1 prevents water or dust from entering the printer through the paper output port 2011 of the upper cover 201. The outer casing 2 is used to install and protect the various components. The upper cover 201 is used to install the fixed blade structure of the paper cutting assembly 5. The lower casing 202 is used to install and fix the waterproof mechanism 4, the moving blade structure of the paper cutting assembly 5, the dehumidifier box 3, and the printing paper. The dehumidifier box 3 is used to absorb moisture in the paper roll chamber 2021 and liquid water that falls into the paper roll chamber 2021; the dehumidifier box 3 contains a desiccant, which can be any one of calcium chloride, silica gel, activated carbon, water-absorbing resin, and quicklime, and can be purchased on the existing market. The waterproof mechanism 4 has a waterproof function. It heats a resistor at a specific location with an electric current, causing a chemical reaction and color change in the thermal coating on the thermal paper, forming a dot matrix image or text. The paper cutting assembly 5 is used to cut the printed paper. Circuit board 6 is an STM32 microcontroller used to control the waterproof mechanism 4 and the paper cutting assembly 5. The surface of circuit board 6 is coated with a waterproof coating 410.

[0029] like Figures 3-5As shown, the waterproof mechanism 4 includes a mechanism body 401, a paper feed motor 402, a set of reduction gears 403, a gear cover plate 404, a base plate shaft 4051, a heating base plate 405, a heating element 406, a printing roller switch plate 407, a paper detection sensor 408, a ribbon cable 409, and a paper feed roller 411. The mechanism body 401 is installed inside the lower housing 202, located below the moving blade structure and in front of the paper roll compartment 2021. The surface of the paper feed motor 402 is coated with a waterproof coating 410. The paper feed motor 402 is installed inside the mechanism body 401, and its shaft extends to the left. A transmission gear is installed on the shaft of the paper feed motor 402, and the transmission gear meshes with the reduction gear set 403. The reduction gear set 403 is rotatably connected to the gear shaft at the left end of the main body 401. The reduction gear set 403 can drive the paper feed roller 411 to rotate. The gear cover plate 404 and the main body 401 are connected to form a gear compartment. The left and right ends of the base plate rotating shaft 4051 pass through the left and right ends of the heating base plate 405 and the printing roller switch plate 407, respectively, and are connected to the main body 401. Both the heating base plate 405 and the printing roller switch plate 407 rotate relative to the base plate rotating shaft 4051. The rear end of the printing roller switch plate 407 is located behind the heating base plate 405, and the two ends of the paper feed roller 411 can be embedded in the front end of the printing roller switch plate 407. The heating element 406 is connected to the heating base plate 405 and is located behind the paper feed roller 411. The heating element 406 is connected to the ribbon cable 409, and a waterproof coating 410 is applied to the surface of the connection between the heating element 406 and the ribbon cable 409. A paper detection sensor 408 is installed inside the main body 401 of the printing mechanism. A detection port 4011 is provided in the main body 401, through which the paper detection sensor 408 can detect whether there is printed paper on the paper feed roller 411. A waterproof coating 410 is coated on the surface of the paper detection sensor 408. The waterproof coating 410 is made of one of the following: acrylic conformal coating, polyurethane conformal coating, silicone, parylene, fluorine-modified nano-coating, PECVD (Plasma Enhanced Chemical Vapor Deposition) coating, and water-based conformal coating. It is used to coat electronic components or solder joints with a polymer film, effectively blocking the penetration of water molecules, achieving a waterproof effect, and preventing short circuits.

[0030] The main body 401 houses the paper feed motor 402, reduction gear set 403, base plate shaft 4051, and paper detection sensor 408. The paper feed motor 402 is coated with a waterproof coating 410, providing power for the rotation of the paper feed roller 411. The reduction gear set 403 changes the output speed of the paper feed motor 402, thereby changing the printing speed. A gear cover 404 prevents interference with the rotation of the reduction gear set 403. The heating base plate 405 houses the heating element 406. The heating element 406, commercially available, heats a resistor at a specific location using an electric current, causing a chemical reaction and color change in the thermal coating on the thermal paper, forming a dot matrix image or text. A print roller switch plate 407 moves the heating element 406 closer to the paper feed roller 411. The paper feed roller 411 moves the printing paper. A ribbon cable 409 transmits electrical energy and data between the heating element 406 and the circuit board 6. The paper detection sensor 408 detects the presence of printing paper on the paper feed roller 411.

[0031] like Figures 6-8 As shown, the paper cutting assembly 5 includes a moving blade structure and a fixed blade structure. The moving blade structure includes a cutting upper housing 501, a cutting motor 502, a worm gear 503, a drive gear 504, a cutting lower housing 505, a cutting spring 506, a moving blade 507, a cutting fixing bracket 508, a sliding push rod 509, and an intermittent gear 510. The fixed blade structure includes a fixed blade holder 511 and a fixed blade 512. The bottom of the cutting upper housing 501 and the top of the cutting lower housing 505 form a cutting cavity. The cutting lower housing 505 is installed inside the cutting fixing bracket 508, which is installed inside the lower housing 202 and located on top of the waterproof mechanism 4. The cutting spring 506 is installed on the cutting lower housing 505. The moving blade 507 is pressed under the cutting spring 506 and can slide relative to the cutting spring 506. The drive gear 504 is rotatably mounted on the lower cutter housing 505 and located above the cutter spring 506. The bottom of the drive gear 504 has multiple eccentric holes 5041 located around its central axis. The upper end of the sliding push rod 509 is inserted into one of the eccentric holes 5041, and the lower end of the sliding push rod 509 is slidably connected to the strip-shaped groove 5071 of the moving blade 507. The cutter motor 502 is installed inside the cutter cavity. The cutter motor 502, worm gear 503, and intermittent gear 510 are connected in sequence. Both the worm gear 503 and the intermittent gear 510 mesh with the drive gear 504. The cutter motor 502 is connected to the circuit board 6. The fixed blade holder 511 is mounted on the bottom of the upper cover 201. The fixed blade 512 is mounted on the upper cover 201 of the housing 2 via the fixed blade holder 511. The fixed blade 512 corresponds to the moving blade structure. The waterproof mechanism 4 is rotatably connected to the fixed blade holder 511.

[0032] A description of the waterproof performance of a printer with waterproof and dehumidifying capabilities: When liquid water falls from above the printer, the liquid water on the paper output tray 2011 is blocked by the waterproof cover 1 and will not enter the printer interior through the paper output tray 2011. When liquid water enters the printer interior from the paper roll tray 2021, the liquid water will not accumulate in the paper roll tray 2021. Instead, the liquid water will flow through the water guide channel 2022 at the bottom of the paper roll tray 2021 into the dehumidification box 3, where it will be absorbed and locked in place. In addition, when the air is relatively humid, the air containing moisture enters the printer. Because the paper feed motor 402, cutter motor 502, heating element 406, paper detection sensor 408 and ribbon cable 409 are all coated with a waterproof coating 410, it is not easy for the ribbon cable 409 to short circuit or oxidize. In addition, the dehumidification box 3 in the lower shell 202 can be replaced regularly. The dehumidification box 3 will continuously absorb the moisture in the paper roll compartment 2021, so the printing paper is not easy to become unusable due to moisture.

[0033] A printer with waterproof and dehumidifying properties operates as follows: The top cover 201 is opened, and printing paper is placed into the paper roll compartment 2021 of the lower cover 202. The top cover 201 drives the paper feed roller 411 to engage with the print roller switch plate 407. The print roller switch plate 407 rotates around the base plate pivot 4051, which in turn pushes the heating base plate 405 to rotate around the base plate pivot 4051. The heating element 406 presses the printing paper onto the paper feed roller 411, and the paper detection sensor 408 detects the presence of printing paper on the paper feed roller 411. Under the control of the circuit board 6, the paper feed roller 411 moves the printing paper towards the paper cutting assembly 5 and then discharges it through the paper outlet 2011 of the top cover 201. Simultaneously, the heating element 406, under the command of the circuit board 6, prints text or patterns on the printing paper. After printing is completed, the control board sends a command to the cutter motor 502 of the paper cutting assembly 5. The cutter motor 502 drives the worm gear 503 and the intermittent gear 510 to rotate. The worm gear 503 drives the drive gear 504 to move to the right. When the intermittent gear 510 contacts the drive gear 504, the intermittent gear 510 drives the drive gear 504 to rotate. The drive gear 504 pushes the moving blade 507 outward through the sliding push rod 509 and engages with the fixed blade 512 of the fixed blade structure. With the cooperation of the moving blade 507 and the fixed blade 512, the printed paper is cut.

[0034] The above-described specific embodiments are preferred embodiments of this utility model and are not intended to limit this utility model. Any other changes or equivalent substitutions made without departing from the technical solution of this utility model are included within the protection scope of this utility model.

Claims

1. A printer with waterproof and dehumidifying properties, characterized in that: The device includes a housing (2), a dehumidifier box (3), a waterproof mechanism (4), a paper cutting assembly (5), and a circuit board (6). The dehumidifier box (3), the waterproof mechanism (4), the paper cutting assembly (5), and the circuit board (6) are all installed on the housing (2). The circuit board (6) is connected to the waterproof mechanism (4) and the paper cutting assembly (5) respectively. The housing (2) is provided with a paper roll compartment (2021) and a water guide channel (2022). The waterproof cover (1) is installed on the housing (2). The paper roll compartment (2021) is connected to the dehumidifier box (3) through the water guide channel (2022). The dehumidifier box (3) is installed at the bottom of the housing (2). The waterproof mechanism (4), the paper cutting assembly (5), and the circuit board (6) are all coated with a waterproof coating (410).

2. The printer with waterproof and dehumidifying performance according to claim 1, characterized in that: The waterproof mechanism (4) includes a mechanism body (401), a paper feed motor (402), a reduction gear set (403), a gear cover plate (404), a heating base plate (405), a heating element (406), a printing roller switch plate (407), a ribbon cable (409), and a paper feed roller (411). The paper feed motor (402) is mounted on the outer casing (2) through the mechanism body (401). The gear cover plate (404) and the mechanism body (401) are connected to form a gear compartment. The reduction gear set (403) is mounted in the gear compartment. The paper feed motor (402) is connected to the paper feed roller (411) through the reduction gear set (403). The heating base plate (405) and the printing roller switch plate (407) are both connected through... The substrate shaft (4051) is rotatably connected to the main body (401) of the mechanism. The two ends of the printing roller switch plate (407) are respectively located on both sides of the heating substrate (405). The heating element (406) is connected to the heating substrate (405) and corresponds to the paper feed roller (411). The paper feed roller (411) can be embedded in one end of the printing roller switch plate (407) near the heating element (406). The paper feed roller (411) and the heating element (406) are both corresponding to the paper cutting assembly (5). The paper detection sensor (408) is corresponding to the paper feed roller (411). The connection between the heating element (406) and the ribbon cable (409) and the paper feed motor (402) are all coated with the waterproof coating (410).

3. A printer with waterproof and dehumidifying properties according to claim 1, characterized in that: It also includes a waterproof cover (1), the outer shell (2) is provided with a paper outlet (2011), and the waterproof cover (1) is located at the paper outlet (2011).

4. The printer with waterproof and dehumidifying performance according to claim 1, characterized in that: The paper cutting assembly (5) includes a moving blade structure and a fixed blade structure. The moving blade structure is installed on the top of the waterproof mechanism (4). The moving blade structure matches the fixed blade structure. The moving blade structure is coated with the waterproof coating (410).

5. A printer with waterproof and dehumidifying properties according to claim 4, characterized in that: The moving blade structure includes an upper cutter housing (501), a cutter motor (502), a worm gear (503), a drive gear (504), a lower cutter housing (505), a cutter spring (506), a moving blade (507), a cutter mounting bracket (508), a sliding push rod (509), and an intermittent gear (510). The upper cutter housing (501) is connected to the lower cutter housing (505). The lower cutter housing (505) is mounted on the top of the waterproof mechanism (4) via the cutter mounting bracket (508). The moving blade (507) is slidably mounted on the lower cutter housing via the cutter spring (506). (505), the drive gear (504) is connected to the moving blade (507) through the sliding push rod (509), the worm gear (503) can drive the drive gear (504) to move, the intermittent gear (510) can drive the drive gear (504) to rotate, the cutter motor (502) is connected to the intermittent gear (510) through the worm gear (503), the cutter motor (502) is installed on the lower shell of the cutter (505), the cutter motor (502) is connected to the circuit board (6), and the cutter motor (502) is coated with the waterproof coating (410).

6. The printer with waterproof and dehumidifying performance according to claim 5, characterized in that: The moving blade (507) is provided with a strip-shaped groove (5071), the lower end of the sliding push rod (509) is slidably connected to the groove (5071), the drive gear (504) is provided with an eccentric hole (5041), and the upper end of the sliding push rod (509) is installed in the eccentric hole (5041).

7. The printer with waterproof and dehumidifying performance according to claim 4, characterized in that: The fixed blade structure includes a fixed blade holder (511) and a fixed blade (512). The fixed blade (512) is mounted on the upper cover (201) of the outer shell (2) via the fixed blade holder (511). The fixed blade (512) corresponds to the moving blade structure. The waterproof mechanism (4) is rotatably connected to the fixed blade holder (511).

8. A printer with waterproof and dehumidifying properties according to claim 1, characterized in that: The dehumidifier box (3) is equipped with a desiccant.

9. The printer with waterproof and dehumidifying performance according to claim 1, characterized in that: The desiccant is one of calcium chloride, silica gel, activated carbon, water-absorbing resin, or quicklime.

10. The printer with waterproof and dehumidifying performance according to claim 1, characterized in that: The waterproof coating (410) is one of acrylic conformal coating, polyurethane conformal coating, silicone, parylene, fluorine-modified nano-coating, PECVD coating or water-based conformal coating.

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