CN112519422B

CN112519422B - Handheld Printer

Info

Publication number: CN112519422B
Application number: CN202011469753.9A
Authority: CN
Inventors: 李洋; 杨高平; 张柏林
Original assignee: Zhuhai Bencai Electronics Co ltd
Current assignee: Zhuhai Bencai Electronics Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2025-01-24
Anticipated expiration: 2040-12-14
Also published as: CN112519422A

Abstract

A handheld printer relates to the technical field of printers and comprises a machine shell, an ink box, a main roller, 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 in the machine shell, the ink box can be placed in the machine shell, the flexible circuit board is electrically connected with the main control board and can be electrically connected with the ink box, a printing driving module, a position sensor module and an ink box identification module are integrated on the flexible circuit board, the main roller is connected with the machine shell, a magnet is connected with the main roller, and the magnet is oppositely arranged with a Hall element in the position sensor module. The printing driving module, the position sensor module and the ink box identification module in the handheld printer are integrated on a flexible circuit board, so that the space utilization rate is improved, the wiring quantity can be reduced, the assembly complexity is reduced, and the production efficiency is improved.

Description

Hand-held printer

Technical Field

The invention relates to the technical field of printers, in particular to a handheld printer.

Background

At present, the hand-held small printer has more and more application fields due to the characteristics of light weight, small size, portability, convenient printing and the like. The traditional handheld small printer comprises a shell, wherein a main control board, an ink box and a circuit board are arranged in the shell, and the circuit board is respectively connected with the main control board and the ink box to drive the ink box to print.

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

But because at printer inner structure restriction, position sensor module and ink horn discernment module need install in different positions, so can only be through setting up polylith circuit board in order to satisfy the installation demand, and the circuit board passes through the mode of wiring and connects the main control board, and the quantity of circuit board increases, leads to the inside wiring quantity of printer casing to increase, and the circuit is mixed chaotic, easily takes place the mistake when assembling the wiring to cause hardware damage, influence production efficiency.

Disclosure of Invention

The invention aims to provide a handheld printer which can solve the technical problems to a certain extent.

The invention is realized in the following way:

a hand-held printer 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 in the shell, the ink box can be placed in 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 is rotationally connected with the shell, and is connected with a magnet, and the magnet is arranged opposite to the Hall element in the position sensor module.

In one possible implementation, the FPC device further includes 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.

In a possible implementation manner, the FPC device further includes a support plate, a flexible pad and a first elastic member, the flexible circuit board is fixed on one side of the support plate facing away from the fixing plate, the flexible pad is arranged between the support plate and the flexible circuit board, the support plate can move relative to the fixing plate, the first elastic member is arranged between the fixing plate and the support plate, and the fixing plate is connected with the casing.

In one possible embodiment, the handheld printer further comprises a nozzle protecting cover, a first cover opening detection device and an early warning device;

the spray head of the ink box is opposite to the ink jet opening of the shell, and the spray head protective cover is used for covering the spray head;

the first cover opening detection device is used for detecting whether the nozzle protective cover is covered on the nozzle or not;

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

In a possible implementation manner, the handheld printer further comprises a cover body, a second cover opening detection device and an early warning device, the casing is provided with an opening, the opening is used for allowing the ink box to be inserted into the casing, the cover body is used for covering the opening, the second cover opening detection device is used for detecting whether the cover body is covered on the ink box or not, the main control board is in control connection with the second cover opening detection device, when the cover body is not covered on the ink box, the main control board blocks the ink box to print, and the early warning device sends an early warning signal.

In a possible implementation manner, the second cover opening detection device comprises a second detection switch and a second trigger piece, wherein the second trigger piece is arranged on the cover body, and the second detection switch is arranged on the main control board.

In one possible implementation, the handheld printer further comprises a detachable device, the first side of the casing is provided with a protruding portion, the protruding portion is provided with an ink jet port, a nozzle of the ink cartridge is opposite to the ink jet port, the main roller is arranged on the protruding portion, the detachable device is provided with an auxiliary roller, the detachable device is detachably connected with the first side of the casing, and the nozzle protecting cover can be covered on the protruding portion and the detachable device.

In a possible implementation mode, the main control board is integrated with a reset module, the shell 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 manner, the main control board is further integrated with a communication module, and the communication module is used for carrying out data transmission with the terminal equipment.

In a possible implementation, one end of the cover body is hinged with 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 one possible implementation, a receiving groove is formed in one side, facing the hall element, of the main roller, and the magnet is embedded in the receiving groove.

The beneficial effects of the invention at least comprise:

The handheld printer comprises a shell, an ink box, a main roller, 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 in the shell, the flexible circuit board is electrically connected with the main control board and 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 is rotatably connected with the shell, the main roller is connected with a magnet, and the magnet is oppositely arranged with a Hall element. Because print drive module, position sensor module and ink horn discernment module all integrate on a slice flexible circuit board, because flexible circuit board has certain deflection, consequently can improve the degree of freedom of position is placed to position sensor and print drive module when structural design, improves space utilization, and reducible wiring quantity, reduces the equipment complexity, improves production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 6 is an exploded view of an FPC assembly in a handheld printer according to an embodiment of the present invention;

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

FIG. 8 is an exploded view of a removable device in a handheld printer according to an embodiment of the present invention;

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

FIG. 10 is an exploded view 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 housing of a 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 silk-screen plate in a handheld printer according to an embodiment of the present invention.

In the figure:

100-shell, 102-jet printing button, 103-printer outer shell, 104-printer inner shell, 105-silk screen plate, 106-reset switch through hole, 107-working state indication lamp light transmission area, 108-WiFi indication lamp light transmission area, 109-bottom shielding sheet, 110-uncovering button, 111-third elastic piece, 112-uncovering button limiting piece, 120-battery, 130-electric control module, 131-master control plate, 132-type-c plate, 133-first detection switch, 134-second detection switch, 200-FPC device, 210-flexible circuit board, 211-Hall element, 220-flexible pad, 230-supporting plate, 240-fixed plate, 250-main roller, 252-bearing, 253-rubber ring, 254-magnet, 260-first elastic piece, 300-ink box, 321-top column, 322-top column mounting plate, 323-second elastic piece, 400-detachable device, 411-auxiliary roller, 420-shell, 440-buckle, 460-first buckle, 470-fourth elastic piece, 480-first magnetic piece, 500-first outer shell, 230-supporting plate, 240-fixed plate, 250-main roller, 252-bearing, 253-rubber ring, 254-magnet, 260-first elastic piece, 411-first elastic piece, 502-auxiliary roller, trigger, and 602-main roller.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its 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 explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

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

First embodiment

Referring to fig. 1-14, the present embodiment provides a handheld printer, which includes a casing 100, an ink cartridge 300, a main roller 250, a main control board 131 and an FPC device 200, wherein 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 casing 100, the ink cartridge 300 can be placed inside the casing 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 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 with the casing 100, the main roller 250 is connected with a magnet 254, and the magnet 254 is disposed opposite to a hall element 211 in the position sensor module. The hall element 211 is a magnetic sensor based on the hall effect. During printing, the main roller 250 contacts with a medium to be printed (such as paper), so that the main roller 250 rotates along with the relative movement of the paper and the handheld printer, thereby reflecting the relative movement between the paper and the printer, and the relative movement is transmitted to the hall element 211 through the magnet 254, so that the main control board 131 can obtain the relative movement information (the relative movement information can include the movement speed, the movement position and the like) between the handheld printer and the medium to be printed, and further feedback adjustment is realized.

The main roller 250 is rotatable about its own axis relative to the housing 100. In one embodiment of the present embodiment, the main roller 250 is rotatably coupled to the housing 100 through a bearing. The bearing plays a limiting role on the main roller 250 while ensuring that the main roller 250 can rotate relative to the casing 100, and improves the rotation stability of the main roller 250.

As shown in fig. 6, in a preferred embodiment, the FPC apparatus 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 casing 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 casing 100, the main roller 250 is indirectly connected to the casing 100 through the fixing plate 240, so as to realize the rotational connection of the main roller 250 to the casing 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 casing 100.

Alternatively, in a preferred embodiment, the FPC apparatus 200 further includes a support plate 230 and a first elastic member 260, the flexible circuit board 210 is fixed to a side of the support plate 230 facing away from the fixing plate 240, and the first elastic member 260 is disposed between the fixing plate 240 and the support plate 230, and the fixing plate 240 is connected to the chassis 100. So configured, under the action of the first elastic member 260, the support plate 230 can move within a certain range relative to the fixing plate 240, so as to approach or depart from the fixing plate 240, and further, the position of the flexible circuit board 210 mounted on the support plate 230 on the inner side of the casing 100 is changed, so that the flexible circuit board 210 is in effective contact with the ink cartridge 300.

Preferably, the flexible circuit board 210 has a plurality of first metal contacts integrally formed therewith, and the ink cartridge 300 has a plurality of second metal contacts with which the first metal contacts can be in contact.

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 cartridge 300. The plurality of first metal contacts and the plurality of second metal contacts can be connected in a one-to-one correspondence. When the number of the first metal contacts is larger than that of the second metal contacts, other first metal contacts can correspondingly contact with metal contacts on other mechanisms (such as a encryption chip) besides the first metal contacts corresponding to the second metal contacts one by one.

Because the first metal contact is integrally formed and arranged 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 fixed plate 240, friction of each first metal contact on the flexible circuit board 210 during installation of the ink cartridge 300 is avoided, the service life of the handheld printer is further prolonged, when the supporting plate 230 moves towards the direction close to the fixed plate 240, the first elastic piece 260 stores force, and after the ink cartridge 300 moves in place, the first elastic piece 260 pushes the supporting plate 230 towards the direction far away from the fixed plate 240, so that the flexible circuit board 210 installed on the supporting plate 230 is in effective contact with the ink cartridge 300.

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

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

Further, a flexible pad 220 is disposed between the flexible circuit board 210 and the support plate 230, and the flexible pad 220 supports and protects the flexible circuit board 210. The flexible pad 220 is made of flexible material, such as rubber, rubber sheet, or resin. The flexible pad 220 may play a role in buffering and damping between the flexible circuit board 210 and the support plate 230 on the one hand, thereby protecting the flexible circuit board 210, and may play a role in supporting the flexible circuit board 210 on the other hand, so as 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, a region opposite to the first metal contact is formed with a recess. The supporting protruding structures are arranged on one side of the flexible pad 220, which faces the flexible circuit board 210, and are in one-to-one correspondence with the first metal contacts, when the flexible circuit board 210 is assembled with the flexible pad 220, the surface of the flexible circuit board 210 is in contact with the surface of the flexible pad 220, and the supporting protruding structures on the flexible pad 220 extend into the concave formed on the rear side of the corresponding first metal contacts, so that supporting strengthening effect is achieved on the shape of the first metal contacts, and effective contact between the flexible circuit board 210 and the ink box 300 is facilitated.

The support plate 230 is provided with a chip groove into which a part of the structure of the hall element 211 protrudes. The support 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 so that the first metal contact makes better contact with the second metal contact of the ink cartridge 300. The fixing plate 240 is fixed to the cabinet 100.

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

In order to better protect the nozzle of the ink cartridge 300, the handheld printer preferably further comprises a nozzle protecting cover 500, the ink cartridge 300 is mounted inside the casing 100, the nozzle of the ink cartridge 300 is opposite to the ink ejection opening of the casing 100, and the nozzle protecting cover 500 can cover the nozzle, so that the nozzle is protected from drying ink.

In order to remind a user to cover the nozzle protection cover 500 in time, the handheld printer preferably further comprises a first cover opening detection device and an early warning device, wherein the first cover opening detection device is used for detecting whether the nozzle protection cover 500 is covered on the nozzle, the main control board 131 is respectively connected with the first cover opening detection device and the early warning device in a control manner, and when the nozzle protection cover 500 is not covered on the nozzle for more than a set period of time, the early warning device sends an early warning signal to remind the user to cover the nozzle protection cover 500 so as to protect the nozzle.

A cover 600 is provided on the hand-held printer, and the casing 100 has an opening for inserting the ink cartridge 300 into the casing 100, and the cover 600 is for covering the opening.

Further, in a preferred embodiment, the handheld printer further includes a second cover opening detection device and an early warning device, the main control board 131 is in control connection with the second cover opening detection device, when the cover 600 is not covered on the ink cartridge 300, the main control board 131 blocks the ink cartridge 300 from performing a print job, and the early warning device sends an early warning signal.

The main control board 131 blocks the ink cartridge 300 from performing the print job specifically means that when the handheld printer is in the process of performing the print job, the main control board 131 controls the ink cartridge 300 to stop performing the print job, i.e., the handheld printer is caused to stop performing the print job. When the handheld printer is in a standby state and is not in the process of printing a job, the main control board 131 controls the ink cartridge 300 to be unable to start the printing function, so that the handheld printer cannot start the printing function to perform a printing job when the cover 600 is not covered.

The second cover opening detection device and the early warning device are respectively electrically connected with the main control board 131.

The second cover opening detection device is used for detecting whether the cover 600 is covered on the opening of the casing 100, when the opening of the cover 600, which is not covered on the casing 100, exceeds a set period of time, the main control board 131 controls the handheld printer to stop printing, and controls the early warning device to send an early warning signal to remind a user to cover the cover 600. Therefore, the ink box 300 is prevented from being damaged or part of the modules of the control device are prevented from being short-circuited due to the fact that the user pulls out the ink box 300 when the handheld printer is in a starting state.

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

In a preferred implementation of this embodiment, the main control board 131 is integrated with a reset module, and correspondingly, the casing 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 is further integrated with 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, a mobile phone, and the like. 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 in the terminal equipment, and the communication module is used for carrying out wireless data transmission, so that a user can control, input, view data and other operations through the application software. Further, the early warning device can achieve the purpose of reminding a user by displaying early warning information on the terminal equipment, enabling the terminal equipment to ring, vibrating and the like.

Specifically, the hardware system of the handheld printer provided by the application comprises an external interface module, a power module and an embedded control module, wherein the embedded control module comprises a control device, and the control device comprises a printing module, a resetting module, a cover opening detection module and a communication module. The communication module includes a WiFi module and/or a bluetooth module, and is integrated on the main control board 131.

The power module is composed of a battery 120 (such as a rechargeable polymer lithium battery) and a corresponding circuit and an interface, wherein the interface and the corresponding circuit are integrated on a main control board 131, the battery 120 is stuck on the inner shell of the casing 100 in a sticking mode, and the battery is connected with the interface on the main control board 131 in a wiring mode and is used for supplying 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 row's needle for charge and data transmission to handheld printer through inserting Type-c line in Type-c interface department.

The printing module comprises a main control chip, a printing control circuit, a position sensor module, a printing driving module and an ink box identification module. Wherein, main control chip and print control circuit integrate on main control board 131, print drive module and ink horn discernment module integrate on flexible circuit board 210 for handle printing data transmission, and drive ink horn 300 carries out the print operation, discern the ink horn discernment chip of ink horn 300 bottom, guarantee that the customer uses the ink horn 300 of former 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, 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, and further, the feedback adjustment is realized through the main control board 131. The position sensor includes a hall element 211.

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

The cover opening detection module comprises a first cover opening detection device, a second cover opening detection device and an early warning device. The early warning device comprises a machine state indicator lamp arranged on the machine shell 100, or the early warning device can also comprise a buzzer or a display panel, or the early warning device can be connected with the communication module so as to perform early warning operation on the 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 one possible embodiment, the handheld printer further includes a detachable device 400, the first side of the casing 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 to the first side of the casing 100, and the nozzle protection cover 500 can be covered on the protrusion and the detachable device 400.

As shown in fig. 8, the following structure may be adopted for the buckle of the detachable device 400:

the detachable device 400 includes a housing 420, the housing 420 is provided with a buckle, called a first buckle 460, and a first side surface of the casing 100 is provided with a first clamping groove, where the first buckle 460 can be clamped in the first clamping groove. The housing 420 includes a bottom shell and a pinch plate 440, the bottom shell is connected with the pinch plate 440, the auxiliary roller 411 is installed between the bottom shell and the pinch plate 440, and a part of the auxiliary roller 411 extends out of the bottom shell, and the first buckle 460 is slidably assembled on the bottom shell and a part of the auxiliary roller extends out of the pinch plate 440 to connect with the housing 100. The first buckle 460 is connected with the housing 420 through a fourth elastic member 470.

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

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

Specifically, the cover opening button 110 is connected to a locking plate, and the casing 100 is locked to the cover 600 by the locking plate. Specifically, a latch plate is connected to the cover opening button 110, the latch plate is provided with a hook, and a slot corresponding to the hook is provided on the cover 600. The cover opening button 110 is connected to the casing 100 through a third elastic member 111, and the third elastic member 111 is used for resetting the cover opening button 110. When the cover 600 is closed at the opening of the casing 100, the hook extends into the slot, so that the cover 600 is connected with the casing 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 machine shell 100, so that the clamping hook is separated from the clamping groove, and the cover body 600 is unlocked. Further, a cover opening button 110 limiting block is further disposed in the casing 100, the cover opening button limiting member 112 is connected to the casing 100 and located at the inner side of the casing 100, and the third elastic member 111 is connected between the cover opening button limiting member 112 and the cover opening button 110. Specifically, the cover release button 110 and the engagement plate may be of an integral structure.

Further, the cover 600 is provided with a steel shaft 601, and the steel shaft 601 is mounted on the cover 600 through a steel shaft limiting block 602. Specifically, the return spring 603 is a torsion spring, the return spring 603 is sleeved on the steel shaft 601, and is assembled on the cover 600 under the limiting action of the steel shaft limiting block 602. The end of the torsion spring is connected with the casing 100, the cover 600 is hinged with the casing 100 through the steel shaft 601, when the cover 600 is clamped with the clamping plate, the restoring spring 603 stores the force, and when the cover opening button 110 is pressed, the restoring spring 603 drives the cover 600 to turn over, so that the cover 600 can be automatically turned over.

In one possible embodiment, the head protection cap 500 is attached to the detachable device 400 by magnetic means. Specifically, a first magnetic member 480 is disposed in the detachable device 400, a second magnetic member 503 is disposed in the head protection cover 500, and the first magnetic member 480 is attracted to the second magnetic member 503, so that the head protection cover 500 is attracted to the detachable device 400.

Second embodiment

The present embodiment is an improvement of the first embodiment, and the technical content disclosed in the first embodiment is not repeated, and the disclosure of the first embodiment also belongs to the disclosure of the present embodiment.

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

As shown in fig. 13, the first detection switch 133 and the corresponding circuit are integrated on the main control board 131, and the first detection 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 protecting cover 500, and in fig. 7, the first trigger 505 is a cylinder disposed on the nozzle protecting cover 500, and the cylinder and the nozzle protecting cover 500 are integrally formed. When the head protection cover 500 is closed to the cabinet 100, the first trigger 505 contacts the first detection switch 133.

When the handheld printer is in a start-up state, the nozzle protecting cover 500 is removed, the first trigger piece 505 leaves the first detection switch 133, so that the first detection switch 133 is in a trigger 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 start-up state, the nozzle protection cover 500 is taken down, the first trigger piece 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, when the handheld printer is in a working state (i.e. a printing state), the off-cover timing of the nozzle protection cover 500 is started after the printing is finished, when the handheld printer is in a non-working state (i.e. a standby state), the off-cover timing of the nozzle protection cover 500 is started, and when the off-cover timing of the nozzle protection cover 500 is full of a set period (for example, ten minutes), the early warning device early warns, and the early warning device enables a machine state indicator lamp to turn red, and can also pop up prompt information of the nozzle protection cover 500 through an application program.

As shown in fig. 9 and 13, in a preferred implementation manner of this embodiment, the second cover opening detection device includes a second trigger 604, a second detection switch 134 and a corresponding circuit, where the second trigger 604 is disposed on the cover 600, and when the cover 600 is closed, the second trigger 604 contacts with the second detection switch 134 of the casing 100.

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

When the handheld printer is in a starting 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, and the early warning device gives an alarm, so that the machine state indicator light turns red, the embedded control module performs power-off processing on the printing driving module, and the ink box 300 is prevented from being damaged or the printing driving module is prevented from being short-circuited due to the fact that a user pulls out the ink box 300 after opening the upper cover in the starting state. Specifically, the early warning device may perform early warning through application software of the mobile terminal, for example, pop-up window of the application software on the mobile terminal to remind the 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 triggering state, the early warning device gives an alarm, and the embedded control module performs power-off processing on the printing driving module and interrupts current printing.

As shown in fig. 7, in a preferred implementation of the present embodiment, the nozzle protecting cover 500 includes a protecting cover outer case 501 and a protecting cover inner case 502, where the protecting cover outer case 501 is provided with a second magnetic member 503, and the protecting cover outer case 501 is half-coated on the outer side of the protecting cover inner case 502, and the protecting cover inner case 502 faces the casing 100.

The second magnetic member 503 is located between the inner casing 502 and the outer casing 501, and specifically, a limiting groove is provided on the outer casing, the second magnetic member 503 is mounted on the limiting groove, and the second magnetic member 503 abuts against the inner casing 502.

The inner casing 502 is provided with a protective cover 504, the protective cover 504 is opposite to the nozzle, and is used for covering the nozzle, specifically, the inner casing 502 is provided with a groove, and the protective cover 504 is embedded in the groove.

Further, in an alternative embodiment, the first triggering member 505 may be disposed on the top surface of the inner shell 502 of the protective cover and extend upward.

Further, in an alternative embodiment, the inner protective cover housing 502 is provided with a positioning post, the outer protective cover housing 501 is provided with a positioning hole, and the positioning post of the inner protective cover housing 502 is matched with the positioning hole of the outer protective cover housing 501.

As shown in fig. 7, in an alternative embodiment, a jaw is provided at an edge of the protective cover inner case 502, a catching groove is provided at an edge of the protective cover outer case 501, and the jaw is protruded into the catching groove when the protective cover inner case 502 is mounted to the protective cover outer case 501, thereby fixing the protective cover inner case 502 with the protective cover outer case 501.

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

In one embodiment of the present embodiment, the handheld printer includes a housing 100, an ink cartridge 300, an FPC device 200, a detachable device 400, a cover 600, and a head protection cover 500. Wherein:

The housing 100 includes a screen 105, a printer housing 103 and a printer housing 104, and a spray button 102, an FPC device 200, an ink cartridge 300, an electronic control module 130 and a battery 120 are provided in the housing 100. The screen printing plate 105 is used for printing marks and the like, the screen printing plate 105 is adhered to the printer outer shell 103 and the printer inner shell 104, the screen printing plate 105 is further provided with a WiFi indicator light transmission area 108, a working state indicator light transmission area 107 and a reset switch through hole 106, the jet printing button 102 is matched with a hole formed in the printer outer 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 box 300 is arranged in a cavity formed in the printer inner shell, 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 printer inner shell, the main control board 131 is arranged on the left side of the printer inner shell, the type-c board 132 is arranged on the rear side of the printer inner shell, the printer inner shell 104 is connected with a bottom shielding piece 109, and an ink jet opening is formed in the bottom shielding piece 109, and in a preferred embodiment, the bottom shielding piece 109 is matched with the printer inner shell 104 through a positioning column. (of course, the bottom shielding sheet 109 may be otherwise attached to the printer inner housing 104, such as by adhesive.) the battery 120 is disposed on the right side of the printer inner housing 104, and is adhered to the printer inner 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 with the casing 100, the other end is connected with the casing 100 through a snap structure, and the casing 100 is provided with a cover opening button 110. The cover 600 is provided with a steel shaft 601, and the steel shaft 601 is mounted on the cover 600 through a steel shaft limiting block 602. The reset spring 603 is sleeved on the steel shaft 601 and is assembled on the cover 600 under the limiting action of the steel shaft limiting block 602. The return spring 603 may be a torsion spring, an end of which is connected to the casing 100, and the cover 600 is hinged to the casing 100 through a steel shaft 601.

As shown in fig. 6, the FPC apparatus 200 includes a flexible circuit board 210, a support 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 support plate 230, the flexible pad 220 is positioned between the support plate 230 and the flexible circuit board 210, the first elastic member 260 is positioned between the fixing plate 240 and the support plate 230, the fixing plate 240 is connected with the case 100, and the support plate 230 can be close to or far from the fixing plate 240. The main roller 250 is connected to the fixed plate 240, the main roller 250 is rotatably connected with the fixed plate 240 through a bearing 252, a groove is formed in the side face of the main roller 250, a magnet 254 is located in the groove, an annular groove is formed in the peripheral face of the main roller 250, a rubber ring 253 is sleeved on the main roller 250, and part of the rubber ring 253 is embedded in the annular groove.

In one alternative, the housing 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 the size of the ink cartridge 300, that is, the size of the casing 100 is similar to the size of the ink cartridge 300, so that the overall size of the handheld printer is relatively smaller and the portability is stronger. Preferably, the outer contour shape of the handheld printer is similar to a cuboid with rounded corners, so that the handheld printer is convenient to grasp, and therefore the structure of a handle or a handle and the like protruding out of the machine shell 100 is not needed, so that the whole size 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 grasp the outer side of the casing 100 to drive the handheld printer to move for printing. The appearance of handheld printer that this embodiment provided satisfies multiple mode demand of gripping, and compact structure, light in weight, portable, the packing transportation of being convenient for.

Further, in order to facilitate gripping of the outer side surface of the casing 100, an anti-slip structure may be provided on the outer side surface of the casing 100, and the anti-slip structure may be anti-slip bumps, anti-slip grooves, anti-slip ribs, etc.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A handheld printer, characterized in that it comprises: a housing, an ink cartridge, a main roller, a main control board and an FPC device;

The FPC device includes a flexible circuit board;

The main control board and the flexible circuit board are both installed in the housing, the ink cartridge can be placed inside the housing, the flexible circuit board is electrically connected to the main control board, and the flexible circuit board can be electrically connected to the ink cartridge;

The flexible circuit board is integrated with a print drive module, a position sensor module and an ink cartridge identification module;

The main roller is rotatably connected to the housing, and the main roller is connected to a magnet, and the magnet is arranged opposite to the Hall element in the position sensor module;

The FPC device further comprises a fixing plate, the flexible circuit board is connected to the housing via the fixing plate, the main roller is rotatably connected to the fixing plate, and the main roller is assembled to the housing via the fixing plate;

The FPC device further comprises a support plate, a flexible pad and a first elastic member, the flexible circuit board is fixed to a side of the support plate away from the fixed plate, the flexible pad is spaced between the support plate and the flexible circuit board, the support plate can move relative to the fixed plate, the first elastic member is arranged between the fixed plate and the support plate, and the fixed plate is connected to the housing;

It also includes a nozzle protection cover, a first cover opening detection device and an early warning device;

The nozzle of the ink cartridge is opposite to the ink jet port of the housing, and the nozzle protection cover is used to cover the nozzle; the first cover-opening detection device is used to detect whether the nozzle protection cover is covering the nozzle; the main control board is respectively connected to the first cover-opening detection device and the early warning device, and when the nozzle protection cover is not covering the nozzle for more than a set time, the early warning device sends a warning signal;

It also includes a cover body, a second cover-opening detection device and an early warning device. The housing has an opening, and the opening is used for the ink cartridge to be inserted into the interior of the housing. The cover body is used to cover the opening. The second cover-opening detection device is used to detect whether the cover body covers the ink cartridge. The main control board is controlled and connected to the second cover-opening detection device. When the cover body does not cover the ink cartridge, the main control board blocks the ink cartridge from printing, and the early warning device sends a early warning signal.

2. The handheld printer according to claim 1, characterized in that the second cover opening detection device comprises a second detection switch and a second trigger member, the second trigger member is arranged on the cover body, and the second detection switch is arranged on the main control board.

3. The handheld printer according to claim 1 is characterized in that it also includes a detachable device, the first side of the casing is provided with a protrusion, the protrusion is provided with an inkjet port, the nozzle of the ink cartridge is arranged opposite to the inkjet port, the main roller is arranged 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 casing.

4. The handheld printer according to claim 1, characterized in that the main control board is integrated with a reset module, the housing is provided with a reset switch, the reset switch is connected to the reset module, and the reset module is used to restart the main control board.

5. The handheld printer according to claim 1, characterized in that the main control board is also integrated with a communication module, and the communication module is used for data transmission with a terminal device.

6. The handheld printer according to claim 1 is characterized in that one end of the cover is hinged to the casing, and the other end is connected to the casing via a snap structure, and the casing is provided with a cover opening button, and the cover opening button is connected to the snap structure for unlocking the snap structure.