CN214137930U

CN214137930U - Hand-held printer

Info

Publication number: CN214137930U
Application number: CN202023015679.1U
Authority: CN
Inventors: 李洋; 杨高平; 张柏林
Original assignee: Zhuhai Bentsai Printing Technology Co ltd
Current assignee: Zhuhai Bencai Electronics Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-07
Anticipated expiration: 2030-12-14

Abstract

A handheld printer relates to the technical field of printers, and comprises: the device comprises a shell, an ink box, a main roller, a main control board and an FPC device; the FPC device comprises a flexible circuit board; the main control board and the flexible circuit board are both arranged on the shell, the ink box can be placed inside the shell, the flexible circuit board is electrically connected with the main control board, and the flexible circuit board can be electrically connected with the ink box; the flexible circuit board is integrated with a printing driving module, a position sensor module and an ink box identification module; the main roller wheel is connected with the shell, the main roller wheel is connected with a magnet, and the magnet is arranged opposite to a Hall element in the position sensor module. Print drive module, position sensor module and ink horn identification module and all integrate on a slice flexible circuit board among the handheld printer, improve space utilization, and reducible wiring quantity, reduce the equipment complexity, improve production efficiency.

Description

Hand-held printer

Technical Field

The utility model relates to a printer technical field particularly, relates to a handheld printer.

Background

At present, the handheld small printer has more and more use scenes due to the characteristics of light weight, small size, portability, convenient printing and the like. Traditional handheld small-size printer includes the casing, is provided with main control board, ink horn and circuit board in the casing, and the circuit board is connected with main control board and ink horn respectively to the drive ink horn prints.

In the prior art, a circuit board is generally used as a carrier of the position sensor module and the ink cartridge identification module, and is connected with a main control board in a wiring manner.

However, because at the restriction of printer inner structure, position sensor module and ink horn discernment module need be installed in different positions, so can only be through setting up the polylith circuit board in order to satisfy the installation demand, and the main control board is connected through the mode of wiring to the circuit board, and the increase in number of circuit board leads to printer casing internal wiring increase in quantity, and the circuit is mixed and disorderly, easily takes place the mistake during the equipment wiring to cause the hardware damage, influence production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a handheld printer, it can solve above-mentioned technical problem to a certain extent.

The utility model discloses a realize like this:

a hand-held printer comprising: the device comprises a shell, an ink box, a main roller, a main control board and an FPC device;

the FPC device comprises a flexible circuit board;

the main control board and the flexible circuit board are both arranged on the casing, the ink box can be placed inside the casing, the flexible circuit board is electrically connected with the main control board, and the flexible circuit board can be electrically connected with the ink box;

the flexible circuit board is integrated with a printing driving module, a position sensor module and an ink box identification module;

the main roller wheel is connected with the shell in a rotating mode, the main roller wheel is connected with a magnet, and the magnet is arranged opposite to a Hall element in the position sensor module.

In a possible implementation, the FPC device further includes a fixing plate, the flexible circuit board is connected to the chassis through the fixing plate, the main roller is rotatably connected to the fixing plate, and the main roller is assembled to the chassis through the fixing plate.

In a possible implementation, the FPC device further includes a supporting plate, a flexible pad, and a first elastic member, the flexible circuit board is fixed to a side of the supporting plate away from the fixing plate, the flexible pad is spaced between the supporting plate and the flexible circuit board, the supporting plate can move relative to the fixing plate, the first elastic member is disposed between the fixing plate and the supporting plate, and the fixing plate is connected to the housing.

In a possible implementation scheme, the handheld printer further comprises a nozzle protection cover, a first uncovering detection device and an early warning device;

the nozzle of the ink box is opposite to the ink jetting port of the shell, and the nozzle protective cover is used for covering the nozzle;

the first cover opening detection device is used for detecting whether the spray head protective cover covers the spray head;

the main control board is respectively in control connection with the first cover opening detection device and the early warning device, and when the spray head protective cover is not covered on the spray head for more than a set time, the early warning device sends out an early warning signal.

In a feasible implementation scheme, the handheld printer further comprises a cover body, a second uncovering detection device and an early warning device, the casing is provided with an opening, the opening is used for supplying the ink box to be inserted into the casing, the cover body is used for covering the opening, the second uncovering detection device is used for detecting whether the cover body covers the ink box, the main control board is in control connection with the second uncovering detection device, when the cover body does not cover the ink box, the main control board blocks the ink box to perform printing operation, and the early warning device sends out an early warning signal.

In a possible implementation, the second uncovering detection device includes a second detection switch and a second trigger, the second trigger is disposed on the cover, and the second detection switch is disposed on the main control panel.

In a possible embodiment, the hand-held printer further comprises a detachable device, the first side of the housing is provided with a protrusion, the protrusion is provided with an ink jet, the nozzle of the ink cartridge and the ink jet are oppositely arranged, the main roller is arranged in the protrusion, the detachable device is provided with an auxiliary roller, the detachable device and the first side of the housing can be detachably connected, and the nozzle protective cover can cover the protrusion and the detachable device.

In a possible implementation scheme, the main control board is integrated with a reset module, the casing is provided with a reset switch, the reset switch is connected with the reset module, and the reset module is used for restarting the main control board.

In a possible implementation, the main control board further integrates a communication module, and the communication module is configured to perform data transmission with the terminal device.

In a possible implementation, one end of the cover body is hinged to the casing, the other end of the cover body is connected with the casing through a buckle structure, the casing is provided with a cover opening button, and the cover opening button is connected with the buckle structure and used for unlocking the buckle structure.

In a feasible implementation scheme, one side of the main roller, which faces the hall element, is provided with a containing groove, and the magnet is embedded in the containing groove.

The beneficial effects of the utility model include at least:

in the handheld printer provided by the application, the handheld printer comprises: the printer comprises a shell, an ink box, a main roller wheel, a main control board and an FPC device, wherein the FPC device comprises a flexible circuit board; the main control board and the flexible circuit board are both arranged on the shell, the ink box can be placed inside the shell, the flexible circuit board is electrically connected with the main control board, and the flexible circuit board can be electrically connected with the ink box; the flexible circuit board is integrated with a printing driving module, a position sensor module and an ink box identification module; the main roller wheel is rotatably connected with the shell, and the main roller wheel is connected with a magnet which is arranged opposite to the Hall element. Because print drive module, position sensor module and ink horn identification module and all integrate on a slice flexible circuit board, because flexible circuit board has certain deformation volume, consequently can improve the degree of freedom that position sensor and print drive module placed the position when structural design, improve space utilization, and reducible wiring quantity, reduce the equipment complexity, improve production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a handheld printer according to an embodiment of the present invention when a cover is closed;

fig. 2 is an exploded view of a handheld printer according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the handheld printer according to the embodiment of the present invention when the cover is opened;

fig. 4 is a schematic diagram of an internal structure of a handheld printer according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an internal structure of the handheld printer according to an embodiment of the present invention;

fig. 6 is an exploded view of the FPC assembly in the handheld printer provided by an embodiment of the present invention;

fig. 7 is an exploded view of a base of a handheld printer according to an embodiment of the present invention;

fig. 8 is an exploded view of a detachable device of a handheld printer according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a cover body in a handheld printer according to an embodiment of the present invention;

fig. 10 is a first exploded view of a part of a housing of a handheld printer according to an embodiment of the present invention;

fig. 11 is a partial cross-sectional view of a handheld printer according to an embodiment of the present invention;

fig. 12 is a second exploded view of a part of the housing of the handheld printer according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a main control board in a handheld printer according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a screen printing plate in a handheld printer according to an embodiment of the present invention.

In the figure:

100-a housing; 102-jet printing button; 103-printer housing; 104-printer inner housing; 105-silk screen printing plate; 106-reset switch via; 107-operating state indicator light transmitting area; 108-WiFi indicator light clear region; 109-bottom shielding sheet; 110-a decap button; 111-a third elastic member; 112-lid release button stop; 120-a battery; 130-an electric control module; 131-a main control board; 132-type-c plate; 133-a first detection switch; 134-a second detection switch; 200-FPC devices; 210-a flexible circuit board; 211-hall element; 220-a flexible mat; 230-a support plate; 240-a fixed plate; 250-a main roller; 252-a bearing; 253-rubber ring; 254-a magnet; 260-a first elastic member; 300-ink cartridge; 321-a top pillar; 322-a top post mounting plate; 323-a second elastic member; 400-a detachable device; 411-auxiliary roller; 420-a housing; 440-pinch plate; 460-a first snap; 470-a fourth elastic member; 480-a first magnetic member; 500-a nozzle protective cover; 501-protective cover shell; 502-a protective cover inner shell; 503-a second magnetic member; 504-protective cover; 505-a first trigger; 600-a cover body; 601-a steel shaft; 602-a steel shaft stop block; 603-a return spring; 604-second trigger.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the equipment or elements referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

First embodiment

Referring to fig. 1 to 14, the present embodiment provides a handheld printer, which includes: a chassis 100, an ink cartridge 300, a main roller 250, a main control board 131, and an FPC device 200; the FPC device 200 includes a flexible circuit board 210; the main control board 131 and the flexible circuit board 210 are both mounted on the chassis 100, the ink cartridge 300 can be placed inside the chassis 100, the flexible circuit board 210 is electrically connected with the main control board 131, and the flexible circuit board 210 can be electrically connected with the ink cartridge 300; the flexible circuit board 210 is integrated with a print driving module, a position sensor module and an ink cartridge identification module; the main roller 250 is rotatably connected to the housing 100, and the main roller 250 is connected to a magnet 254, and the magnet 254 is disposed opposite to the hall element 211 in the position sensor module. The hall element 211 is a magnetic sensor based on the hall effect. In the printing process, the main roller 250 contacts with a medium to be printed (for example, paper), so that the main roller 250 rotates along with the relative movement between the paper and the handheld printer, thereby reflecting the relative movement between the paper and the printer, and transmits the relative movement to the hall element 211 through the magnet 254, so that the main control board 131 can obtain the relative movement information between the handheld printer and the medium to be printed (the relative movement information may include information such as movement speed and movement position), thereby implementing feedback adjustment.

The main roller 250 can rotate about its own axis with respect to the cabinet 100. In one embodiment of this embodiment, the main roller 250 is rotatably connected to the housing 100 through a bearing. The bearing plays a limiting role for the main roller 250 while ensuring that the main roller 250 can rotate relative to the machine case 100, and improves the rotational stability of the main roller 250.

As shown in fig. 6, in a preferred embodiment, the FPC assembly 200 further includes a fixing plate 240, and the flexible circuit board 210 is connected to the chassis 100 through the fixing plate 240.

Further, in one possible embodiment, the main roller 250 may be directly rotatably connected to the housing 100, or in another possible embodiment, the main roller 250 is rotatably connected to the fixing plate 240, and since the fixing plate 240 is fixedly connected to the housing 100, the main roller 250 is indirectly connected to the housing 100 through the fixing plate 240, so that the main roller 250 is rotatably connected to the housing 100. When the main roller 250 is rotatably coupled to the fixed plate 240, the main roller 250 is preferably rotatably coupled to the fixed plate 240 through a bearing.

In one possible embodiment, the flexible circuit board 210 is directly fixed to the fixing plate 240, and the fixing plate 240 is fixed to the chassis 100.

Alternatively, in a preferred embodiment, the FPC device 200 further includes a supporting plate 230 and a first elastic member 260, the flexible circuit board 210 is fixed to a side of the supporting plate 230 away from the fixing plate 240, the first elastic member 260 is disposed between the fixing plate 240 and the supporting plate 230, and the fixing plate 240 is connected to the chassis 100. With this arrangement, the supporting plate 230 can move within a certain range relative to the fixing plate 240 by the first elastic member 260, so as to approach or separate from the fixing plate 240, thereby changing the position of the flexible circuit board 210 mounted on the supporting plate 230 inside the casing 100, and facilitating the flexible circuit board 210 to make effective contact with the ink cartridge 300.

Preferably, the flexible circuit board 210 is integrally formed with a plurality of first metal contacts, and the ink cartridge 300 is provided with a plurality of second metal contacts, the first metal contacts being capable of contacting the second metal contacts.

The number of first metal contacts on the flexible circuit board 210 is greater than or equal to the number of second metal contacts on the ink cartridge 300. The plurality of first metal contacts and the plurality of second metal contacts can be connected in a one-to-one correspondence manner. When the number of the first metal contacts is larger than that of the second metal contacts, in addition to the first metal contacts corresponding to the second metal contacts, other first metal contacts can be in corresponding contact with metal contacts on other mechanisms (such as a cryptographic chip).

Because the first metal contact is integrally formed on the flexible circuit board 210, the assembly process is simplified, the assembly time is saved, and the assembly efficiency is improved. In the process of installing the ink cartridge 300 in the casing 100, the ink cartridge 300 pushes the supporting plate 230, so that the supporting plate 230 moves towards the direction close to the fixing plate 240, thereby preventing the first metal contacts on the flexible circuit board 210 from being rubbed when the ink cartridge 300 is installed, and further improving the service life of the handheld printer.

Further, the hall element 211 in the position sensor module is integrated on the flexible circuit board 210, a receiving groove is formed in one side of the main roller 250 facing the hall element 211, a magnet 254 is installed in the receiving groove, and the magnet 254 is arranged opposite to the hall element 211. The circumferential surface of the main roller 250 is provided with a ring groove, the rubber ring 253 is sleeved on the main roller 250, and part of the structure of the rubber ring 253 is embedded in the ring groove.

In the rotation process of the main roller 250, the magnet 254 rotates along with the main roller 250, so that the magnetic field of the hall element 211 changes, the rotation speed of the main roller 250 can be detected through the hall element 211, the hall element 211 is connected with a control device, and the control device controls the ink jet speed of the ink cartridge 300 according to the information feedback of the hall element 211.

Further, a flexible pad 220 is disposed between the flexible circuit board 210 and the supporting plate 230, and the flexible pad 220 plays a role in supporting and protecting the flexible circuit board 210. The flexible pad 220 is made of a flexible material, such as rubber, or resin. The flexible pad 220 may play a role of buffering and damping between the flexible circuit board 210 and the supporting plate 230, on one hand, to protect the flexible circuit board 210, and may play a role of supporting the flexible circuit board 210, on the other hand, to facilitate effective contact between the flexible circuit board 210 and the ink cartridge 300.

In a preferred embodiment, one side of the flexible circuit board 210 is formed with a first metal contact, and on the opposite side of the flexible circuit board 210, an area opposite the first metal contact is formed with a recess. Be provided with the protruding structure of support in one side of flexible circuit board 210 at flexible pad 220 orientation, the protruding structure of support sets up with first metal contact one-to-one, after assembling flexible circuit board 210 and flexible pad 220, the face of flexible circuit board 210 and the surface contact of flexible pad 220, and the protruding structure of support on the flexible pad 220 stretches into rather than the sunken of the first metal contact rear side formation that corresponds, thereby play the support to the shape of first metal contact and consolidate the strengthening effect, be favorable to realizing the effective contact between flexible circuit board 210 and the ink horn 300.

The support plate 230 is provided with a chip groove into which a part of the structure of the hall element 211 protrudes. The supporting plate 230 can move relative to the fixing plate 240 to change the distance between the fixing plate 240 and the flexible circuit board 210, thereby changing the depth of the first metal contact on the flexible circuit board 210 protruding into the interior of the casing 100 to make the first metal contact better contact with the second metal contact of the ink cartridge 300. The fixing plate 240 is fixed to the casing 100.

The FPC device 200 is located on one side of the ink cartridge 300 where the second metal contact is located, on the other side of the ink cartridge 300 opposite to the other side, the casing 100 is provided with an ink cartridge pushing device, the ink cartridge pushing device comprises a top post 321, a top post mounting plate 322 and a second elastic member 323, the second elastic member 323 is connected between the top post 321 and the top post mounting plate 322, the top post mounting plate 322 is connected with the casing 100, a protrusion is arranged on the top post mounting plate 322, the second elastic member 323 can be used as a spring, the second elastic member 323 is sleeved on the protrusion, a groove is formed in one side of the top post 321 facing the top post mounting plate 322, and one end of the spring and a part of the protrusion structure extend into the top. When the ink cartridge 300 is placed in the casing 100, the ink cartridge pushing device and the FPC device 200 are respectively located at two sides of the ink cartridge 300, and the ink cartridge pushing device pushes the ink cartridge 300 to a direction close to the FPC device 200, so that the second metal contact on the ink cartridge 300 is effectively contacted with the first metal contact of the FPC device 200.

In order to protect the head of the ink cartridge 300 better, the hand-held printer preferably further includes a head protection cover 500, the ink cartridge 300 is installed inside the casing 100, and the head of the ink cartridge 300 is opposite to the ink ejection port of the casing 100; the head protective cover 500 can cover the head, thereby protecting the head from dry ink.

In order to remind the user to close the nozzle protection cover 500 in time, the handheld printer preferably further comprises a first cover opening detection device and an early warning device; the first cover-opening detection device is used for detecting whether the nozzle protection cover 500 covers the nozzle; the main control board 131 is respectively in control connection with the first cover opening detection device and the early warning device, and when the nozzle protection cover 500 is not covered on the nozzle for more than a set time, the early warning device sends out an early warning signal to remind a user to cover the nozzle protection cover 500 to protect the nozzle.

The hand-held printer is provided with a cover 600, and correspondingly, the housing 100 has an opening for inserting the ink cartridge 300 into the housing 100, and the cover 600 is used for covering the opening.

Further, in a preferred embodiment, the handheld printer further includes a second uncovering detection device and an early warning device, the main control board 131 is in control connection with the second uncovering detection device, when the cover 600 is not covered on the ink cartridge 300, the main control board 131 blocks the ink cartridge 300 to perform a printing operation, and the early warning device sends an early warning signal.

The main control board 131 blocking the ink cartridge 300 to perform the printing operation specifically refers to: when the handheld printer is in the process of a print job, the main control board 131 controls the ink cartridge 300 to stop the print job, i.e., causes the handheld printer to stop the print job. When the handheld printer is in a standby state and is not in the process of printing, the main control board 131 controls the ink cartridge 300 to disable the printing function, so that the handheld printer cannot enable the printing function to perform the printing operation when the cover 600 is not covered.

The second cover detection device and the early warning device are electrically connected to the main control panel 131.

The second cover opening detection device is used for detecting whether the cover body 600 covers the opening of the casing 100, when the cover body 600 does not cover the opening of the casing 100 for more than a set time, the main control board 131 controls the handheld printer to stop printing, and controls the early warning device to send out an early warning signal to remind a user to cover the cover body 600. Therefore, the damage of the ink box 300 or the short circuit of a part of modules in the control device caused by the fact that the user pulls out the ink box 300 when the handheld printer is in the starting state can be avoided.

In the handheld printer provided in this embodiment, only the first uncovering detection device and the early warning device corresponding to the first uncovering detection device may be provided, or only the second uncovering detection device and the early warning device corresponding to the second uncovering detection device may be provided, or, preferably, both the first uncovering detection device and the early warning device corresponding to the first uncovering detection device are provided, and the second uncovering detection device and the early warning device corresponding to the second uncovering detection device may be two independent early warning devices, or the same early warning device may be used together.

In a preferred embodiment of this embodiment, the main control board 131 is integrated with a reset module, and correspondingly, the housing 100 is provided with a reset switch, and the reset switch is connected with the reset module, and the reset module is used for restarting the main control board 131.

In a possible implementation, the main control board 131 further integrates a communication module, and the communication module is used for data transmission with the terminal device.

Specifically, the terminal device may be a mobile terminal such as a tablet computer and a mobile phone. When the terminal equipment is a mobile terminal such as a tablet personal computer and a mobile phone, application software matched with the handheld printer can be added into the terminal equipment, and the communication module is used for carrying out wireless data transmission, so that a user can carry out operations such as control, input and data checking through the application software. Furthermore, the early warning device can display the early warning information on the terminal equipment, so that the terminal equipment can be warned in modes of ringing, vibrating and the like.

Specifically, the hardware system of handheld printer that this application provided includes external interface module, power module and embedded control module group, and embedded control module group includes controlling means, and controlling means includes printing the module, resets the module, uncaps and detects module and communication module. Wherein, the communication module includes wiFi module and/or bluetooth module, integrates on main control panel 131.

The power module comprises a battery 120 (such as a rechargeable polymer lithium battery), a corresponding circuit and an interface, wherein the interface and the corresponding circuit are integrated on the main control board 131, the battery 120 is adhered to the inner shell of the casing 100 in an adhering manner, and is connected with the interface on the main control board 131 in a wiring manner to supply power to the handheld printer.

The external interface module comprises Type-c interface and corresponding circuit, and is integrated on solitary interface board, is connected with main control board 131 through the mode of arranging the needle for through inserting Type-c line at Type-c interface and charging and data transmission to handheld printer.

The printing module includes: the ink box printing system comprises a main control chip, a printing control circuit, a position sensor module, a printing drive module and an ink box identification module. The main control chip and the printing control circuit are integrated on the main control board 131, the printing drive module and the ink box identification module are integrated on the flexible circuit board 210 and used for processing printing data transmission, driving the ink box 300 to perform printing operation, identifying the ink box identification chip at the bottom of the ink box 300 and ensuring that a customer uses the ink box 300 with original factory quality. The position sensor module is composed of a position sensor and a corresponding circuit, wherein the position sensor is integrated on the flexible circuit board 210 and is connected with the main control board 131 through a flat cable on the flexible circuit board 210, and the corresponding circuit is integrated on the main control board 131 and is used for feeding back relative movement information (the relative movement information can comprise information such as movement speed and movement position) between the handheld printer and a medium to be printed, so that feedback adjustment is realized through the main control board 131. The position sensor includes a hall element 211.

The reset module includes a circuit correspondingly connected to the reset switch, and is integrated on the main control board 131, and is used for manually restarting the system through the reset switch when the system crashes.

The uncovering detection module comprises a first uncovering detection device, a second uncovering detection device and an early warning device. The early warning device is including setting up in the machine state pilot lamp of casing 100, or, the early warning device still can include bee calling organ or display panel, and perhaps, the early warning device can be connected with the communication module to carry out the early warning operation at mobile terminal through the communication module. The display panel is a panel capable of displaying information, and may include an OLED display screen or an LCD display screen.

In a possible embodiment, the handheld printer further includes a detachable device 400, the first side of the housing 100 is provided with a protrusion, the nozzle can be exposed by the protrusion, the protrusion is provided with a main roller 250, the detachable device 400 is provided with an auxiliary roller 411, the detachable device 400 is detachably connected with the first side of the housing 100, and the nozzle protection cover 500 can cover the protrusion and the detachable device 400.

As shown in fig. 8, the snap of the detachable device 400 can adopt the following structure:

the detachable device 400 includes a housing 420, the housing 420 is provided with a first buckle 460, a first side of the casing 100 is provided with a first slot, and the first buckle 460 can be engaged with the first slot. The housing 420 includes a bottom case and a pinch plate 440, the bottom case is connected to the pinch plate 440, the auxiliary roller 411 is installed between the bottom case and the pinch plate 440, and a part of the structure of the auxiliary roller 411 extends out of the bottom case, and the first buckle 460 is slidably assembled on the bottom case and a part of the structure thereof extends out of the pinch plate 440 to be connected to the housing 100. The first latch 460 is connected to the housing 420 by the fourth elastic member 470.

Of course, the detachable device 400 may take other configurations.

As shown in fig. 2, 3 and 9, one end of the cover 600 is hinged to the casing 100, and the other end is connected to the casing 100 through a snap structure, the casing 100 is provided with a cover-opening button 110, and the cover-opening button 110 is connected to the snap structure for unlocking the snap structure.

Specifically, the lid opening button 110 is connected to an engaging plate, and the casing 100 is engaged with the lid 600 through the engaging plate. Specifically, the engaging plate is connected to the lid opening button 110, the engaging plate is provided with a hook, and a slot corresponding to the hook is provided on the lid 600. The cap-opening button 110 is connected to the casing 100 by a third elastic member 111, and the third elastic member 111 is used to reset the cap-opening button 110. When the cover 600 is covered at the opening of the housing 100, the hook extends into the slot, so that the cover 600 is connected to the housing 100. After the cover opening button 110 is pressed, the cover opening button 110 drives the clamping plate to move towards the inner side of the casing 100, so that the clamping hook is separated from the clamping groove, and the cover body 600 is unlocked. Further, a cap-opening button 110 limiting block is further disposed in the casing 100, a cap-opening button limiting block 112 is connected to the casing 100 and located on the inner side of the casing 100, and a third elastic member 111 is connected between the cap-opening button limiting block 112 and the cap-opening button 110. Specifically, the door release button 110 and the engagement plate may be an integral structure.

Further, the cover body 600 is provided with a steel shaft 601, and the steel shaft 601 is mounted on the cover body 600 through a steel shaft stopper 602. Specifically, the return spring 603 is a torsion spring, the steel shaft 601 is sleeved with the return spring 603, and the return spring is assembled to the cover 600 by the limiting effect of the steel shaft limiting block 602. The tip and the casing 100 of torsional spring are connected, and lid 600 is articulated with casing 100 through steel axle 601, and when lid 600 and snap-fit plate joint, reset spring 603 hold up power, and after pressing uncap button 110, reset spring 603 drives the upset of lid 600 to realize the automatic upset of lid 600.

In one possible embodiment, the nozzle protective cover 500 is coupled to the removable device 400 by a magnetic member. Specifically, a first magnetic member 480 is disposed in the detachable device 400, a second magnetic member 503 is disposed in the nozzle protective cover 500, and the first magnetic member 480 and the second magnetic member 503 are attracted, so that the nozzle protective cover 500 is attracted to the detachable device 400.

Second embodiment

The present embodiment is an improvement on the first embodiment, and the technical content disclosed in the first embodiment is not described repeatedly, and the content disclosed in the first embodiment also belongs to the content disclosed in the present embodiment.

In this embodiment, the first uncovering detection device includes a first trigger 505, a first detection switch 133 and a corresponding circuit, the first trigger 505 is disposed on the nozzle protection cover 500, and when the nozzle protection cover 500 is covered, the first trigger 505 contacts the first detection switch 133 in the enclosure 100.

As shown in fig. 13, the first detecting switch 133 and the corresponding circuit are integrated on the main control board 131, and the first detecting switch 133 is located at the bottom of the main control board 131 so as to be closer to the nozzle protection cover 500. The first trigger 505 is disposed on the nozzle protection cover 500. in fig. 7, the first trigger 505 is a cylinder disposed on the nozzle protection cover 500, and the cylinder and the nozzle protection cover 500 are an integral structure. When the head protective cover 500 is closed to the cabinet 100, the first trigger 505 contacts the first detection switch 133.

When the hand-held printer is in a starting state, the nozzle protection cover 500 is taken down, the first trigger 505 leaves the first detection switch 133, so that the first detection switch 133 is in a triggering state, and when the printer is in a printing state, the early warning device does not give an alarm.

When the handheld printer is in a startup state, the nozzle protection cover 500 is taken down, the first trigger 505 leaves the first detection switch 133, so that the first detection switch 133 is in a trigger state, the handheld printer automatically detects the current state through program control, and when the handheld printer is in a working state (namely a printing state), the cover-off timing of the nozzle protection cover 500 is started after the printing is finished; when the handheld printer is in a non-working state (namely a standby state), the handheld printer enters the cap-off timing of the nozzle protection cap 500, and the early warning device gives an early warning when a set time (for example, ten minutes) is up, so that the machine state indicator lamp turns red by the early warning device, and a prompt message for asking to cap the nozzle protection cap 500 can be popped up through an application program.

As shown in fig. 9 and 13, in a preferred embodiment of this embodiment, the second uncovering detection device includes a second trigger 604, a second detection switch 134 and a corresponding circuit, the second trigger 604 is disposed on the cover 600, and after the cover 600 is covered, the second trigger 604 contacts with the second detection switch 134 of the chassis 100.

As shown in fig. 13, the second detection switch 134 and the corresponding circuit are integrated on the main control board 131, and the second detection switch 134 is located on the top of the main control board 131 so as to be closer to the cover 600. The second trigger 604 is disposed on the cover 600, in fig. 9, the second trigger 604 is a protrusion structure disposed on a side edge of the cover 600, and the second trigger 604 and the cover 600 are an integral structure. When the cover 600 is closed to the casing 100, the second trigger 604 contacts the second detection switch 134.

When the handheld printer is in a power-on state, the cover body 600 is opened, the second trigger piece 604 leaves the second detection switch 134, the second detection switch 134 is in a trigger state, the early warning device gives an alarm to enable the machine state indicator lamp to turn red, the embedded control module performs power-off processing on the print driving module, and the situation that the ink cartridge 300 is damaged or the print driving module is short-circuited due to the fact that a user pulls out the ink cartridge 300 after opening the upper cover in the power-on state is avoided. Specifically, the early warning device may perform early warning through application software of the mobile terminal, for example, pop up a window on the mobile terminal through the application software to remind a user that the cover 600 is not closed.

When the handheld printer is in a printing state, if the second detection switch 134 is in a trigger state, the early warning device gives an alarm, the embedded control module performs power-off processing on the printing drive module, and interrupts current printing.

As shown in FIG. 7, in a preferred embodiment of the present embodiment, the nozzle protective cover 500 includes a protective cover outer 501 and a protective cover inner 502, the protective cover outer 501 is provided with a second magnetic member 503, the protective cover outer 501 is half-covered on the outer side of the protective cover inner 502, and the protective cover inner 502 faces the casing 100.

The second magnetic member 503 is located between the inner protective cover case 502 and the outer protective cover case 501, specifically, a limiting groove is formed in the outer protective cover case, the second magnetic member 503 is installed in the limiting groove, and the second magnetic member 503 is abutted to the inner protective cover case 502.

The protective cover inner shell 502 is provided with a protective cover 504, and the protective cover 504 is opposite to the nozzle and is used for covering the nozzle.

Further, in an alternative embodiment, the first trigger 505 can be disposed on the top surface of the inner housing 502 of the protective cover and extend upward.

Further, in an alternative embodiment, the positioning posts are disposed on the protective cover inner shell 502, the positioning holes are disposed on the protective cover outer shell 501, and the positioning posts of the protective cover inner shell 502 are matched with the positioning holes of the protective cover outer shell 501.

In an alternative embodiment, as shown in fig. 7, a latch is provided on the edge of the protective cover inner case 502, and a latch is provided on the edge of the protective cover outer case 501, and when the protective cover inner case 502 is mounted to the protective cover outer case 501, the latch extends into the latch, thereby fixing the protective cover inner case 502 to the protective cover outer case 501.

In an alternative embodiment, the protective cover inner housing 502 may also be provided with a scraper slot, in which the nozzle scraper is snap-fitted.

In one embodiment of this embodiment, a handheld printer includes: a casing 100, an ink cartridge 300, an FPC device 200, a detachable device 400, a cover 600, and a head protective cover 500. Wherein:

the casing 100 comprises a screen printing plate 105, a printer outer shell 103 and a printer inner shell 104, and the casing 100 is provided with a jet printing button 102, an FPC device 200, an ink box 300, an electronic control module 130 and a battery 120. The silk screen printing plate 105 is used for printing marks such as trademarks, and the silk screen printing plate 105 is bonded with the printer outer shell 103 and the printer inner shell 104; the silk screen printing plate 105 is also provided with a WiFi indicating lamp light-transmitting area 108, a working state indicating lamp light-transmitting area 107 and a reset switch through hole 106; the jet printing button 102 is matched with a hole arranged on the printer shell 103; the printer outer shell 103 is arranged above the printer inner shell 104 and is in threaded connection with the printer inner shell 104; the FPC device 200 is in threaded connection with the printer inner shell 104 and is electrically connected with the electronic control module 130; the ink cartridge 300 is placed in a cavity provided in the inner printing housing; the electronic control module 130 comprises a main control board 131 and a type-c board 132; the electronic control module 130 is in threaded connection with the printing inner shell, and the main control board 131 is arranged on the left side of the printing inner shell; the type-c board 132 is placed on the rear side of the print inner case; the printer housing 104 is connected to a bottom shutter 109, and the ink ejection port is disposed on the bottom shutter 109. in a preferred embodiment, the bottom shutter 109 is engaged with the printer housing 104 through a positioning post. (of course, the bottom shielding sheet 109 can be connected to the inner printer housing 104 in other ways, such as by bonding.) the battery 120 is disposed on the right side of the inner printer housing 104, bonded to the inner printer housing 104, and electrically connected to the electronic control module 130.

As shown in fig. 3 and 9, the top of the casing 100 has an opening, one end of the cover 600 is hinged to the casing 100, the other end is connected to the casing 100 by a snap structure, and the casing 100 is provided with a door-opening button 110. The cover body 600 is provided with a steel shaft 601, and the steel shaft 601 is mounted on the cover body 600 through a steel shaft limiting block 602. The steel shaft 601 is sleeved with the return spring 603, and the cover 600 is assembled by the limiting function of the steel shaft limiting block 602. The return spring 603 may be a torsion spring, an end of the torsion spring is connected to the casing 100, and the cover 600 is hinged to the casing 100 through the steel shaft 601.

As shown in fig. 6, the FPC assembly 200 includes a flexible circuit board 210, a supporting plate 230, a flexible pad 220, a fixing plate 240, and a first elastic member 260, the flexible circuit board 210 is mounted to the supporting plate 230, the flexible pad 220 is located between the supporting plate 230 and the flexible circuit board 210, the first elastic member 260 is located between the fixing plate 240 and the supporting plate 230, the fixing plate 240 is connected to the chassis 100, and the supporting plate 230 can be close to or far from the fixing plate 240. The main roller 250 is connected to the fixing plate 240, the main roller 250 is rotatably connected to the fixing plate 240 through a bearing 252, a groove is formed in a side surface of the main roller 250, the magnet 254 is located in the groove, a ring groove is formed in a circumferential surface of the main roller 250, the main roller 250 is sleeved with the rubber ring 253, and a part of the rubber ring 253 is embedded in the ring groove.

In an alternative, the cabinet 100 may also be provided with a lanyard.

Further, in the handheld printer provided in this embodiment, the ink cartridge 300 is located inside the casing 100, and the size of the casing 100 is slightly larger than that of the ink cartridge 300, that is, the size of the casing 100 is similar to that of the ink cartridge 300, so that the overall size of the handheld printer is relatively small and the handheld printer is more portable. Preferably, the outer contour shape of the handheld printer is similar to a cuboid with round corners, so that the handheld printer is convenient to grasp, and a handle or a handle and other structures protruding out of the casing 100 are not needed, so that the whole volume of the handheld printer is smaller, the handheld printer is easier to carry, and the packaging cost and the transportation cost are reduced. The user can directly grip the outer side of the housing 100 to drive the handheld printer to move for printing. The appearance of the handheld printer that this embodiment provided satisfies multiple mode demand of gripping, and compact structure, the quality is light, portable, the packing transportation of being convenient for.

Further, in order to facilitate grasping the outer side surface of the casing 100, an anti-slip structure may be disposed on the outer side surface of the casing 100, and the anti-slip structure may be an anti-slip bump, an anti-slip groove, an anti-slip rib, or the like.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-held printer, comprising: the device comprises a shell, an ink box, a main roller, a main control board and an FPC device;

the FPC device comprises a flexible circuit board;

2. The handheld printer of claim 1, wherein the FPC assembly further comprises a fixing plate, the flexible circuit board is connected to the housing through the fixing plate, the main roller is rotatably connected to the fixing plate, and the main roller is assembled to the housing through the fixing plate.

3. The handheld printer according to claim 2, wherein the FPC device further includes a supporting plate, a flexible pad, and a first elastic member, the flexible circuit board is fixed to a side of the supporting plate facing away from the fixing plate, the flexible pad is spaced between the supporting plate and the flexible circuit board, the supporting plate is capable of moving relative to the fixing plate, the first elastic member is disposed between the fixing plate and the supporting plate, and the fixing plate is connected to the housing.

4. The hand-held printer of claim 1, further comprising a head protective cover, a first cover detection device, and an early warning device;

5. The handheld printer according to claim 1, further comprising a cover, a second cover opening detection device, and an early warning device, wherein the housing has an opening, the opening is used for inserting the ink cartridge into the housing, the cover is used for covering the opening, the second cover opening detection device is used for detecting whether the cover covers the ink cartridge, the main control board is in control connection with the second cover opening detection device, when the cover does not cover the ink cartridge, the main control board blocks the ink cartridge to perform a printing operation, and the early warning device sends an early warning signal.

6. The handheld printer of claim 5, wherein the second decap detection device comprises a second detection switch and a second trigger, the second trigger is disposed on the cover, and the second detection switch is disposed on the main control board.

7. The hand-held printer of claim 1, further comprising a detachable device, wherein the first side of the housing is provided with a protrusion, the protrusion is provided with an ink ejection port, the nozzle of the ink cartridge is disposed opposite to the ink ejection port, the main roller is disposed on the protrusion, the detachable device is provided with an auxiliary roller, and the detachable device is detachably connected to the first side of the housing.

8. The handheld printer of claim 1, wherein the main control board is integrated with a reset module, the housing is provided with a reset switch, the reset switch is connected with the reset module, and the reset module is used for restarting the main control board.

9. The handheld printer of claim 1, wherein the main control board further integrates a communication module, and the communication module is configured to perform data transmission with a terminal device.

10. The handheld printer of claim 5, wherein the cover is hinged to the housing at one end and connected to the housing at the other end by a snap-fit structure, and the housing is provided with a cover release button connected to the snap-fit structure for unlocking the snap-fit structure.