Printer

Abstract

The utility model relates to the technical field of printing equipment, and particularly discloses a printer which comprises a shell, a printing head assembly, a main control board and a waterproof assembly, an installation cavity is arranged in the shell, the outer surface of the shell is provided with a paper outlet communicated with the installation cavity, and the printing head assembly and the main control board are both arranged in the installation cavity; the waterproof assembly comprises a water absorption part, and the water absorption part is located on the upstream of the main control board in the flowing direction of liquid entering the installation cavity from the paper outlet and used for absorbing and preventing the liquid from flowing to the main control board. According to the printer, the water absorption piece is arranged on the upstream of the main control board, after liquid flows into the mounting cavity from the paper outlet, the liquid flows through the water absorption piece firstly, the liquid is absorbed through the water absorption piece so that the liquid can be prevented from flowing to the main control board, and the problem that the main control board is short-circuited and burnt due to water soaking is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially relates to a printer. BACKGROUND

[0002] The printer is used for printing processing to sheet media such as bill, convenient and fast, greatly facilitate people's work and life. The printer provided by the related art comprises a shell, a print head and a main control board, the shell is provided with a mounting cavity and a paper outlet communicated with the mounting cavity, the print head and the main control board are both installed in the mounting cavity, the main control board is electrically connected with the print head through a cable, and the sheet media printed by the print head is output from the printer through the paper outlet. However, the printer provided by the related art has the problem that liquid (such as rainwater, drinking water, beverage, etc.) enters the mounting cavity from the paper outlet and flows to the surface of the main control board, causing short circuit of the main control board. SUMMARY

[0003] The utility model discloses a printer to improve the waterproof performance of the main control board.

[0004] The utility model provides a kind of printer, and the printer includes:

[0005] Including shell, print head assembly, main control board and waterproof component, the inside of the shell is equipped with mounting cavity, the outer surface of the shell is equipped with with the mounting cavity Communication paper outlet, the print head assembly and the main control board are both set up in the mounting cavity;

[0006] The waterproof component includes water absorption part, along the flow direction of liquid after entering the mounting cavity from the paper outlet, the water absorption part is located in the upstream of the main control board, and the water absorption part is used to absorb and prevent liquid from flowing to the main control board.

[0007] As the preferred technical scheme of printer, the print head assembly includes print head support and print head installed in the print head support, the print head support and the main control board are both fixedly connected with the shell, and along the flow direction of liquid after entering the mounting cavity from the paper outlet, the print head support is located in the upstream of the water absorption part, and the water absorption part is clamped between the main control board and the print head support.

[0008] As the preferred technical scheme of printer, the print head assembly further includes flexible cable, the main control board includes print head socket, the first end of the flexible cable is connected with the lower end of the print head, and the second end of the flexible cable is plugged with the print head socket.

[0009] The waterproof component further includes guide, the guide is used to limit the routing path of the flexible cable, and under the limitation of the guide, the flexible cable extends from below to above and is then plugged with the print head socket.

[0010] As a preferred technical solution of the printer, the guide member comprises a first guide part and a second guide part connected at an included angle, the printhead support comprises a bottom wall and a side wall arranged at an included angle, the first guide part is arranged opposite to the bottom wall, and the water absorption member, the first guide part and the main control board are sequentially stacked from top to bottom, the second guide part is arranged opposite to the side wall, the first guide part is configured to guide the flexible cable to extend along the bottom wall from the bottom of the printhead support to the side wall, and the second guide part is configured to guide the flexible cable to extend along the side wall from bottom to top.

[0011] As a preferred technical solution of the printer, the water absorption member is fixedly connected with the bottom wall by adhesive;

[0012] The first guide part is fixedly connected with the water absorption member by adhesive, and / or the second guide part is fixedly connected with the side wall by adhesive.

[0013] As a preferred technical solution of the printer, the printer further comprises a rubber roller, the shell comprises an upper cover body, a middle shell body and a lower shell body, the rubber roller is mounted on the upper cover body, and the upper cover body is pivotally connected with the middle shell body.

[0014] The middle shell body comprises a front wall, a support wall and two side plates, the front wall and the support wall are located between the two side plates, the front wall and the support wall are arranged in a staggered manner in the front-rear direction, the left end of the front wall and the right end of the front wall are respectively connected with the upper ends of the two side plates, the mounting cavity is formed between the front wall and the two side plates, the mounting cavity has a first opening with a downward opening direction, the printhead assembly and the main control board are mounted in the mounting cavity through the first opening, the lower shell body is detachably connected with the middle shell body, and the lower shell body closes the first opening when the lower shell body is connected with the middle shell body.

[0015] The left end of the support wall and the right end of the support wall are respectively connected with the lower ends of the two side plates, a paper bin for accommodating printing medium is formed between the support wall and the two side plates, the paper bin has a second opening with an upward opening direction, the upper cover body can rotate relative to the middle shell body to have an open position and a closed position, the upper cover body closes the second opening when the upper cover body is located at the open position, the printhead of the printhead assembly cooperates with the rubber roller, and the paper outlet is formed between the upper cover body and the front wall in a relative and spaced manner, and the upper cover body opens the second opening when the upper cover body is located at the closed position, and the printhead and the rubber roller are separated.

[0016] As the preferred technical scheme of the printer, the waterproof assembly further comprises a water isolation piece arranged between the water absorption piece and the main control board, and the water isolation piece is used for isolating the water absorption piece and the main control board.

[0017] As the preferred technical scheme of the printer, the waterproof assembly further comprises a water guide rib protruding from the upper surface of the shell, and the water guide rib is configured to block liquid dripping on the upper surface of the shell from flowing into the paper outlet.

[0018] As the preferred technical scheme of the printer, the waterproof assembly further comprises a waterproof strip arranged on the inner side of the paper outlet, a first end of the waterproof strip is connected with the shell, and a second end of the waterproof strip is suspended, the waterproof strip is made of elastic material, when the waterproof strip is not subjected to external force, the waterproof strip closes the paper outlet, and when the waterproof strip is subjected to the pushing force of the printing medium, the waterproof strip is deformed and opens the paper outlet.

[0019] As the preferred technical scheme of the printer, the printer further comprises a paper tearing knife, the waterproof strip is located downstream of the paper tearing knife in the output direction of the printing medium, and the waterproof strip is arranged in a stack with the paper tearing knife and is fixedly connected with the inner wall of the shell.

[0020] The printer provided by the present application has at least the following beneficial effects:

[0021] The printer comprises a shell, a print head assembly, a main control board and a waterproof assembly, the inside of the shell is provided with a mounting cavity, the outer surface of the shell is provided with a paper outlet communicating with the mounting cavity, and the print head assembly and the main control board are arranged in the mounting cavity; the waterproof assembly comprises a water absorption piece, the water absorption piece is located upstream of the main control board along the flowing direction of liquid after the liquid enters the mounting cavity from the paper outlet, and the water absorption piece is used for absorbing and preventing the liquid from flowing to the main control board. When liquid flows into the mounting cavity from the paper outlet, the liquid first flows through the water absorption piece, and the liquid is absorbed by the water absorption piece, so that the liquid can be prevented from flowing to the main control board, thereby avoiding the problem that the main control board is short-circuited and burned due to water immersion. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a structural schematic view of a printer in an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a sectional view of the printer in the embodiment of the present application;

[0024] Figure 3 FIG. 3 is an exploded view of the printer in the embodiment of the present application;

[0025] Figure 4 FIG. 4 is a partial structural schematic view of the printer in the embodiment of the present application;

[0026] Figure 5 For Figure 2 Enlarged view at A in the middle;

[0027] Figure 6 For the sectional view of the partial structure of the printer in the embodiment of the utility model;

[0028] Figure 7 For Figure 2 Enlarged view at B in the middle.

[0029] In the figure:

[0030] 1, shell; 11, upper cover body; 12, middle shell body; 121, front wall; 122, support wall; 123, side plate; 13, lower shell body; 14, mounting cavity; 15, paper outlet; 16, paper bin;

[0031] 2, print head assembly; 21, print head support; 211, bottom wall; 212, side wall; 22, print head; 23, flexible cable; 231, first section; 232, second section; 233, third section;

[0032] 3, main control board; 31, print head socket;

[0033] 41, water absorbing part; 42, guide part; 421, first guide part; 422, second guide part; 43, water guide rib; 44, waterproof strip; 45, water isolation part;

[0034] 6, rubber roller;

[0035] 7, paper tearing knife. DETAILED DESCRIPTION

[0036] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0037] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and, the first feature is "above", "above" and "above" the second feature, including the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "below" and "below" the second feature, including the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the utility model, it is necessary to explain, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as a limitation on the utility model.

[0040] Please refer to Figures 1 to 6The embodiment provides a printer, which comprises a shell 1, a print head assembly 2, a main control board 3 and a waterproof assembly. The shell 1 is internally provided with a mounting cavity 14, the outer surface of the shell 1 is provided with a paper outlet 15 in communication with the mounting cavity 14, and the print head assembly 2 and the main control board 3 are arranged in the mounting cavity 14; the waterproof assembly comprises a water absorption member 41, the water absorption member 41 is located upstream of the main control board 3 along the flow direction of liquid after the liquid enters the mounting cavity 14 from the paper outlet 15, and the water absorption member 41 is used for absorbing and preventing the liquid from flowing to the main control board 3. The printer provided in the embodiment can prevent the liquid from flowing to the main control board 3 by arranging the water absorption member 41 upstream of the main control board 3, so that the liquid flows through the water absorption member 41 after flowing into the mounting cavity 14 from the paper outlet 15, and the liquid is absorbed by the water absorption member 41, thereby avoiding the problem that the main control board 3 is short-circuited and burned due to water immersion.

[0041] Specifically, in the embodiment, the printer is a portable printer, and the liquid is rainwater. It can be understood that the portable printer is often carried by the user due to the characteristic of being convenient to carry, for example, a courier usually carries a portable printer to collect or deliver a package, and when the courier collects the package, the portable printer is used to print a delivery slip and paste it on the package. When the user goes out or the portable printer is used outdoors, it is easy to encounter rainy weather, at this time, the portable printer has the risk of being rained on, and when the portable printer is rained on by rainwater, the rainwater is easy to enter the mounting cavity 14 from the paper outlet 15, and the rainwater entering the mounting cavity 14 is absorbed by the water absorption member 41, thereby improving the waterproof performance of the portable printer.

[0042] In other embodiments, the printer can also be a desktop printer, and the liquid can also be drinking water or beverage. It can be understood that the desktop printer is usually placed on the ground or a table, and if the user accidentally overturns a water cup, a canned or bottled beverage, or the like, the water or beverage also has the risk of entering the mounting cavity 14 from the paper outlet 15, and the water or beverage entering the mounting cavity 14 is absorbed by the water absorption member 41, thereby improving the waterproof performance of the desktop printer.

[0043] Optionally, in the embodiment, the water absorption member 41 is specifically water absorption foam, which has strong water absorption capacity and water storage capacity, and can effectively guarantee the waterproof performance of the printer. In other embodiments, the water absorption member 41 can also be water absorption paper, water absorption cloth, absorbent cotton or the like.

[0044] Optionally, please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6The printhead assembly 2 comprises a printhead support 21 and a printhead 22 mounted on the printhead support 21, and the printhead support 21 and the main control board 3 are fixedly connected with the housing 1, and along the flow direction of the liquid after entering the installation cavity 14 from the paper outlet 15, the printhead support 21 is located upstream of the water absorption member 41, and the water absorption member 41 is clamped between the main control board 3 and the printhead support 21. In this way, after the liquid enters the installation cavity 14 from the paper outlet 15, it will flow along the printhead support 21 to the main control board 3. Since the water absorption member 41 is clamped between the printhead support 21 and the main control board 3, it can absorb and prevent the liquid from flowing to the main control board 3. Specifically, in this embodiment, the printhead support 21, the water absorption member 41 and the main control board 3 are arranged in sequence from top to bottom, and after the liquid enters the installation cavity 14 from the paper outlet 15, it first flows through the printhead support 21 from top to bottom, and then is absorbed by the water absorption member 41 to prevent the liquid from flowing to the main control board 3.

[0045] Optionally, please refer to Figure 3 and Figure 5 In this embodiment, the printhead assembly 2 further comprises a flexible cable 23, the main control board 3 comprises a printhead socket 31, the first end of the flexible cable 23 is connected with the lower end of the printhead 22, and the second end of the flexible cable 23 is plugged with the printhead socket 31; the waterproof assembly further comprises a guide 42, the guide 42 is used to limit the routing path of the flexible cable 23, and under the limitation of the guide 42, the flexible cable 23 extends upwardly after extending downwardly, and then is plugged with the printhead socket 31. In this way, under the guidance and limitation of the guide 42, after the flexible cable 23 is drawn out from the printhead 22, it first extends upwardly and then is plugged with the printhead socket 31. When the liquid flows through the printhead support 21, even if the liquid adheres to the surface of the flexible cable 23, under the action of gravity, the liquid cannot extend upwardly beyond the part of the flexible cable 23, but only flows downwardly and is absorbed by the water absorption member 41, so that the liquid can be prevented from entering the printhead socket 31 along the flexible cable 23, thereby avoiding causing short circuit of the printhead 22 or the main control board 3.

[0046] Optionally, please refer to Figures 3 to 5In the embodiment, the guide 42 includes a first guide portion 421 and a second guide portion 422 connected at an angle, and the print head support 21 includes a bottom wall 211 and a side wall 212 arranged at an angle, the first guide portion 421 is arranged opposite to the bottom wall 211, and the water absorption member 41, the first guide portion 421 and the main control board 3 are sequentially stacked from top to bottom, the second guide portion 422 is arranged opposite to the side wall 212, the first guide portion 421 is configured to guide the flexible cable 23 to extend along the bottom wall 211 from the bottom of the print head support 21 to the side wall 212, and the second guide portion 422 is configured to guide the flexible cable 23 to extend upward along the side wall 212. Specifically, the flexible cable 23 includes a first segment 231, a second segment 232 and a third segment 233, the first segment 231 is connected to the lower end of the print head 22, the bottom end of the second segment 232 is connected to the first segment 231, the top end of the second segment 232 is connected to the top end of the third segment 233, and the bottom end of the third segment 233 is plugged into the print head socket 31, the first guide portion 421 is configured to limit the first segment 231 to be clamped between the bottom wall 211 and the water absorption member 41, the second guide portion 422 is configured to limit the second segment 232 to be clamped between the side wall 212 and the second guide portion 422, and the third segment 233 is located on the side of the second guide portion 422 away from the side wall 212. In this way, under the guidance of the guide 42, the flexible cable 23 is first guided out of the space between the bottom wall 211 and the water absorption member 41 by the first segment 231, then guided out of the space between the second guide portion 422 and the side wall 212 by the second segment 232, and finally plugged into the print head socket 31 by the third segment 233, wherein the second segment 232 passes between the second guide portion 422 and the side wall 212 from bottom to top, and when the surface of the second segment 232 is attached with liquid, the liquid will flow downward under the action of its own gravity and be absorbed by the water absorption member 41 below, so as to avoid the liquid entering the print head socket 31 along the flexible cable 23, thereby avoiding causing short circuit of the print head 22 or the main control board 3. Preferably, the guide 42 is made of waterproof material, the first guide portion 421 can prevent the liquid from soaking the main control board 3 below when the water absorption member 41 is saturated with water, and the second guide portion 422 can limit the liquid from soaking the print head socket 31 on the side of the second guide portion 422 away from the side wall 212 when the water absorption member 41 is saturated with water, thereby further improving the waterproof level of the printer. Further preferably, the guide 42 is made of film material, sheet material or plate material. Further preferably, the first guide portion 421 and the second guide portion 422 are integrally formed.

[0047] In other embodiments, the guide 42 can also be replaced by a wire clamp mounted on the side wall 212 of the print head support 21, the wire clamp being higher than the print head socket 31 and the water absorbing member 41, the flexible cable 23 comprising a first section 231, a second section 232 and a third section 233, the first section 231 being connected with the lower end of the print head 22, and the first section 231 being clamped between the bottom wall 211 and the water absorbing member 41, the second section 232 being located at one side of the side wall 212, the bottom end of the second section 232 being connected with the first section 231, the top end of the second section 232 being connected with the third section 233, the wire clamp clamping the connection between the second section 232 and the third section 233 of the flexible cable 23, and the third section 233 being plugged with the print head socket 31, which can also avoid liquid entering the print head socket 31 along the flexible cable 23.

[0048] Optionally, referring to Figure 6 , the waterproof assembly further comprises a water separating member 45, the water separating member 45 being arranged between the water absorbing member 41 and the main control board 3, and the water separating member 45 being used for separating the water absorbing member 41 and the main control board 3. In this way, the main control board 3 can be prevented from being soaked by liquid after the water absorbing member 41 is saturated with water, and the waterproof level of the printer is further improved.

[0049] Optionally, the water absorbing member 41 has a contour shape matching that of the bottom wall 211. In this way, the waterproof requirement can be met, and the structure of the printer is compact.

[0050] Optionally, the water absorbing member 41 is fixedly connected with the bottom wall 211 by gluing. In this way, the connection between the water absorbing member 41 and the print head support 21 is firm and convenient, and the assembly of the printer is facilitated.

[0051] Optionally, the first guide part 421 is fixedly connected with the main control board 3 by gluing. In this way, the connection between the first guide part 421 and the main control board 3 is firm and convenient, and the assembly of the printer is also facilitated.

[0052] Optionally, the second guide part 422 is fixedly connected with the side wall 212 by gluing. In this way, the connection between the second guide part 422 and the print head support 21 is firm and convenient, and the assembly of the printer is also facilitated.

[0053] Optionally, referring to Figure 2 and Figure 3The printer further comprises a rubber roller 6, the housing 1 comprises an upper cover body 11, a middle housing 12 and a lower housing 13, the rubber roller 6 is installed on the upper cover body 11, and the upper cover body 11 is pivotally connected with the middle housing 12; the middle housing 12 comprises a front wall 121, a support wall 122 and two side plates 123, the front wall 121 and the support wall 122 are located between the two side plates 123, the front wall 121 and the support wall 122 are arranged in a staggered manner along the front-rear direction, the left end of the front wall 121 and the right end of the front wall 121 are respectively connected with the upper ends of the two side plates 123, a mounting cavity 14 is formed between the front wall 121 and the two side plates 123, the mounting cavity 14 has a first opening with a downward opening direction, the printhead assembly 2 and the main control board 3 are installed in the mounting cavity 14 through the first opening, the lower housing 13 is detachably connected with the middle housing 12, when the lower housing 13 is connected with the middle housing 12, the lower housing 13 closes the first opening; the left end of the support wall 122 and the right end of the support wall 122 are respectively connected with the lower ends of the two side plates 123, the support wall 122 and the two side plates 123 form a paper bin 16 for accommodating printing medium therebetween, the paper bin 16 has a second opening with an upward opening direction, the upper cover body 11 can rotate relative to the middle housing 12 to have an open position and a closed position, when the upper cover body 11 is located at the open position, the upper cover body 11 closes the second opening, the printhead 22 cooperates with the rubber roller 6, and the paper outlet 15 is formed between the upper cover body 11 and the front wall 121 in a relative and spaced manner; when the upper cover body 11 is located at the closed position, the upper cover body 11 opens the second opening, and the printhead 22 is separated from the rubber roller 6. In this way, the printhead assembly 2 and the main control board 3 can be installed and maintained through the first opening, and the printing medium in the paper bin 16 can be replaced through the second opening; in addition, since the opening direction of the mounting cavity 14 is downward, liquid can be prevented from entering the mounting cavity 14 to the maximum extent, and the waterproof performance of the printer is further improved.

[0054] Optionally, the printhead support 21 is fixedly connected with the lower housing 13 through a first fastener (not shown in the drawings), the main control board 3 is fixedly connected with the lower housing 13 through a second fastener (not shown in the drawings), and the lower housing 13 and the middle housing 12 are fixedly connected through a third fastener (not shown in the drawings).

[0055] Optionally, please refer to Figures 1 to 3 , and Figure 6 , and Figure 7, the waterproof assembly further comprises a water guide rib 43 protruding from the upper surface of the housing 1, the water guide rib 43 is configured to block the liquid dripping on the upper surface of the housing 1 from flowing into the paper outlet 15. In this way, the liquid flowing on the upper surface of the housing 1 is blocked by the water guide rib 43, avoiding the liquid flowing into the installation cavity 14 through the paper outlet 15, so as to further improve the waterproof performance of the printer. Specifically, the water guide rib 43 is integrally formed with the housing 1. In other embodiments, the water guide rib 43 can also be bonded to the housing 1. Specifically, in the present embodiment, the water guide rib 43 extends along the left-right direction, and the water guide rib 43 is arranged on one side of the paper outlet 15 in the front-rear direction. Preferably, please continue to refer to Figures 1 to 3 , and Figure 6 , and Figure 7 , the waterproof assembly comprises two water guide ribs 43, which are arranged on the left and right sides of the paper outlet 15 in the front-rear direction (as shown by arrow ab in Figure 1 ), and the length of each water guide rib 43 covers the length of the paper outlet 15 in the left-right direction (as shown by arrow cd in Figure 1 ), so that when the upper surface of the housing 1 has liquid flowing thereon, the two water guide ribs 43 can prevent the liquid from entering the paper outlet 15 in the front-rear direction, and guide the water to flow away from the left and right sides of the paper outlet 15. One water guide rib 43 is arranged on the upper cover body 11, and the other water guide rib 43 is arranged on the front wall 121.

[0056] As one of the alternative solutions, the waterproof assembly comprises four water guide ribs 43, two of which are arranged on the left and right sides of the paper outlet 15 in the front-rear direction, and the other two are arranged on the left and right sides of the paper outlet 15 in the front-rear direction. The four water guide ribs 43 are spliced into a rectangular frame and surround the paper outlet 15, which can prevent the liquid on the upper surface of the housing 1 from entering the paper outlet 15 from the front, rear, left and right directions.

[0057] Optionally, please refer to Figure 2 , Figure 6 , and Figure 7 , the waterproof assembly further comprises a waterproof strip 44 arranged inside the paper outlet 15, the first end of the waterproof strip 44 is connected with the housing 1, and the second end of the waterproof strip 44 is suspended, the waterproof strip 44 is made of elastic material, when the waterproof strip 44 is not subjected to external force, the waterproof strip 44 closes the paper outlet 15, when the waterproof strip 44 is subjected to the printing medium thrust, the waterproof strip 44 bends and deforms and opens the paper outlet 15. In this way, when the waterproof strip 44 is not subjected to external force, the paper outlet 15 can be closed by the waterproof strip 44, which can reduce or avoid the amount of liquid entering the installation cavity 14 through the paper outlet 15, further improving the waterproof performance of the printer. Preferably, the waterproof strip 44 is a silica gel strip.

[0058] Optionally, please refer to Figure 7The printer further comprises a paper tearing knife 7, and the waterproof strip 44 is located downstream of the paper tearing knife 7 in the output direction of the printing medium, and the waterproof strip 44 is stacked with the paper tearing knife 7 and fixedly connected with the inner wall of the shell 1. In this way, the waterproof strip 44 is convenient to install and maintain. Preferably, the waterproof strip 44 and the paper tearing knife 7 are fixedly connected with the inner wall of the shell 1 by a hot melting mode. Specifically, the shell 1 is made of a plastic material, the inner wall of the front wall 121 of the shell 1 is provided with a fixed column, the waterproof strip 44 and the paper tearing knife 7 are both provided with a through hole, the through hole of the paper tearing knife 7 and the through hole of the waterproof strip 44 are sequentially plugged with the fixed column, and then the waterproof strip 44 and the paper tearing knife 7 are fixedly connected with the shell 1 by a hot melting mode of the fixed column.

[0059] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.

Claims

1. A printer, characterized in that, The device includes a housing (1), a printhead assembly (2), a main control board (3), and a waterproof component. The housing (1) has an internal mounting cavity (14), and the outer surface of the housing (1) has a paper outlet (15) communicating with the mounting cavity (14). The printhead assembly (2) and the main control board (3) are both located inside the mounting cavity (14). The waterproof component includes a water-absorbing element (41) along the flow direction of the liquid after it enters the mounting cavity (14) from the paper outlet (15). The water-absorbing element (41) is located upstream of the main control board (3) and is used to absorb and prevent the liquid from flowing to the main control board (3).

2. The printer according to claim 1, characterized in that, The printhead assembly (2) includes a printhead bracket (21) and a printhead (22) mounted on the printhead bracket (21). The printhead bracket (21) and the main control board (3) are both fixedly connected to the housing (1) and are positioned upstream of the absorbent (41) along the flow direction of the liquid after it enters the mounting cavity (14) from the paper outlet (15). The absorbent (41) is clamped between the main control board (3) and the printhead bracket (21).

3. The printer according to claim 2, characterized in that, The printhead assembly (2) also includes a flexible cable (23), the main control board (3) includes a printhead socket (31), the first end of the flexible cable (23) is connected to the lower end of the printhead (22), and the second end of the flexible cable (23) is plugged into the printhead socket (31); The waterproof component also includes a guide (42) for limiting the routing path of the flexible cable (23), and under the restriction of the guide (42), the flexible cable (23) extends from bottom to top before being plugged into the printhead socket (31).

4. The printer according to claim 3, characterized in that, The guide member (42) includes a first guide portion (421) and a second guide portion (422) connected at an angle. The printhead support (21) includes a bottom wall (211) and a side wall (212) arranged at an angle. The first guide portion (421) and the bottom wall (211) are arranged opposite to each other. The absorbent member (41), the first guide portion (421) and the main control board (3) are stacked sequentially from top to bottom. The second guide portion (422) and the side wall (212) are arranged opposite to each other. The first guide portion (421) is configured to guide the flexible cable (23) to extend from the bottom of the printhead support (21) to the side wall (212) along the bottom wall (211). The second guide portion (422) is configured to guide the flexible cable (23) to extend from bottom to top along the side wall (212).

5. The printer according to claim 4, characterized in that, The absorbent element (41) is fixedly connected to the bottom wall (211) by adhesive. The first guide portion (421) is fixedly connected to the absorbent (41) by adhesive; and / or, the second guide portion (422) is fixedly connected to the side wall (212) by adhesive.

6. The printer according to claim 1, characterized in that, The printer also includes a rubber roller (6), and the housing (1) includes an upper cover (11), a middle housing (12) and a lower housing (13). The rubber roller (6) is mounted on the upper cover (11), and the upper cover (11) is pivotally connected to the middle housing (12). The middle shell (12) includes a front wall (121), a support wall (122), and two side plates (123). The front wall (121) and the support wall (122) are both located between the two side plates (123). The front wall (121) and the support wall (122) are staggered in the front-rear direction. The left end and the right end of the front wall (121) are respectively connected to the upper ends of the two side plates (123). The mounting cavity (14) is shaped like... The mounting cavity (14) is formed between the front wall (121) and the two side plates (123). It has a first opening facing downward. The printhead assembly (2) and the main control board (3) are installed in the mounting cavity (14) through the first opening. The lower housing (13) is detachably connected to the middle housing (12). When the lower housing (13) is connected to the middle housing (12), the lower housing (13) closes the first opening. The left end and the right end of the support wall (122) are respectively connected to the lower ends of the two side plates (123). The support wall (122) and the two side plates (123) form a paper tray (16) for accommodating printing media. The paper tray (16) has a second opening facing upward. The upper cover (11) can rotate relative to the middle shell (12) to have an open position and a closed position. When the upper cover (11) is in the open position, the upper cover (11) closes the second opening. The print head (22) of the print head assembly (2) and the rubber roller (6) cooperate. The upper cover (11) and the front wall (121) form the paper outlet (15) opposite to each other and spaced apart. When the upper cover (11) is in the closed position, the upper cover (11) opens the second opening, and the print head (22) and the rubber roller (6) separate.

7. The printer according to claim 1 or 2, characterized in that, The waterproof component also includes a water-proof component (45), which is disposed between the water-absorbing component (41) and the main control board (3). The water-proof component (45) is used to isolate the water-absorbing component (41) and the main control board (3).

8. The printer according to any one of claims 1-6, characterized in that, The waterproof component also includes a water-guiding rib (43) that protrudes from the upper surface of the housing (1) and is configured to prevent liquid dripping onto the upper surface of the housing (1) from flowing into the paper outlet (15).

9. The printer according to any one of claims 1-6, characterized in that, The waterproof component also includes a waterproof strip (44) disposed inside the paper outlet (15). The first end of the waterproof strip (44) is connected to the housing (1), and the second end of the waterproof strip (44) is suspended. The waterproof strip (44) is made of elastic material. When the waterproof strip (44) is not subjected to external force, the waterproof strip (44) closes the paper outlet (15). When the waterproof strip (44) is subjected to the thrust of the printing medium, the waterproof strip (44) bends and deforms and opens the paper outlet (15).

10. The printer according to claim 9, characterized in that, The printer also includes a paper tearer (7). Along the output direction of the printing medium, the waterproof strip (44) is located downstream of the paper tearer (7). The waterproof strip (44) is stacked with the paper tearer (7) and fixedly connected to the inner wall of the housing (1).

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