Portable ink-jet printer

Abstract

The invention provides a portable ink-jet printer which comprises a printer body, a display screen, a printing nozzle, a starting switch and a roller, a battery containing cavity, an ink box containing cavity and a circuit board containing cavity are formed in the printer body, and the printer body comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are sequentially connected. The second side wall and the fourth side wall are oppositely arranged in the first horizontal direction, the first side wall and the third side wall are oppositely arranged in the second horizontal direction, the ink box containing cavity is provided with an ink box installation opening, and the ink box installation opening is formed in the first side wall; the display screen is arranged on the top wall of the machine body; the printing nozzle is arranged on the bottom wall of the machine body; the starting switch is arranged on the second side wall, and the circuit board containing cavity is located between the ink box containing cavity and the second side wall. The rollers are mounted below the machine body, and at least one part of each roller protrudes outwards from the bottom wall; the machine body is further provided with a holding part. The portable ink-jet printer is small in size and convenient to control and observe.

Description

Technical Field

[0001] The present invention relates to the technical field of printing equipment, and in particular to a portable inkjet printer which is easy to operate. Background Art

[0002] The basic principle of inkjet printers is to form text, images or patterns by precisely spraying liquid ink onto the surface of paper. This technology initially relied on thermal bubble inkjet technology, which uses electric heat to heat the ink in the nozzle, causing it to expand rapidly and generate bubbles, thereby ejecting the ink from the nozzle. With the continuous advancement of technology, piezoelectric inkjet technology has gradually become the mainstream. This technology uses piezoelectric materials to deform under the action of an electric field, thereby pushing the ink out of the nozzle, with higher precision and stability.

[0003] However, most portable printers are too large, inconvenient to pack and transport, and the display screen position, communication interface, start button and gripping position are not set properly during use, which makes it inconvenient for users to operate and observe during the printing process. In addition, the connection structure between the existing ink cartridge and the printer is not designed properly, which makes it difficult to stably install the ink cartridge on the printer, thereby failing to achieve stable ink supply, or difficult to disassemble and install the ink cartridge. Summary of the invention

[0004] The purpose of the present invention is to provide a portable inkjet printer which is small in size and convenient to operate and observe.

[0005] In order to achieve the above-mentioned purpose, the portable inkjet printer provided by the present invention includes a body, a display screen, a print nozzle, a start switch and a roller. A battery accommodating chamber, an ink cartridge accommodating chamber and a circuit board accommodating chamber are arranged in the body. The body includes a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence. The second side wall and the fourth side wall are arranged opposite to each other in a first horizontal direction, and the first side wall and the third side wall are arranged opposite to each other in a second horizontal direction. The ink cartridge accommodating chamber has an ink cartridge installation port, which is opened on the first side wall, and the first horizontal direction and the second horizontal direction are perpendicular to each other; the display screen is arranged on the top wall of the body; the print nozzle is arranged on the bottom wall of the body; the start switch is arranged on the second side wall, and the circuit board accommodating chamber is located between the ink cartridge accommodating chamber and the second side wall; the roller is installed below the body and at least a portion of it protrudes outward from the bottom wall; and a gripping portion is also arranged on the body.

[0006] As can be seen from the above, setting the start switch and the display screen close to the circuit board accommodating cavity can shorten the circuit, simplify the circuit structure and assembly process, make the design more compact and save space. The display screen is set on the top wall of the body to facilitate users to observe the screen.

[0007] A further solution is that the portable inkjet printer also includes an ink cartridge, which is installed in the ink cartridge accommodating chamber; an ink cartridge switch fastener is provided on the body near the ink cartridge installation port, the ink cartridge switch fastener is hinged to the body, and the ink cartridge switch fastener can rotate between a fastened position and an open position; in the fastened position, the ink cartridge switch fastener locks the ink cartridge; in the open position, the ink cartridge switch fastener is separated from the ink cartridge.

[0008] As can be seen from the above, the ink cartridge switch fastener can be stably installed on the printer and can be easily replaced. A further solution is that the ink cartridge switch fastener includes a first limit arm and a second limit arm that are arranged to intersect each other; when the ink cartridge switch fastener is in the fastened position, the first limit arm cooperates with the side wall of the ink cartridge to limit the position, and the second limit arm cooperates with the top wall of the ink cartridge to limit the position.

[0009] As can be seen from the above, the first limiting arm and the second limiting arm are respectively cooperated with the side wall and the top wall of the ink cartridge to stably fix the ink cartridge and prevent the ink cartridge from becoming unstable during printing, resulting in discontinuous printing or failure to print.

[0010] A further solution is that the ink cartridge switch fastener further includes an unlocking portion, which is disposed on the first limiting arm and extends outward from the first limiting arm away from the side wall of the ink cartridge.

[0011] As can be seen from the above, the unlocking portion is provided to facilitate the user to open and close the ink cartridge.

[0012] A further solution is that the unlocking portion is arc-shaped and bends toward the hinged position between the ink cartridge switch buckle and the body; and / or the unlocking portion is arranged near one end of the second limiting arm in the length direction of the first limiting arm.

[0013] As can be seen from the above, the unlocking portion is arc-shaped and bends toward the hinged position between the ink cartridge switch buckle and the machine body, so that the user can open the ink cartridge switch buckle with less effort.

[0014] A further solution is that a contact portion is provided on the surface of the second limiting arm facing the ink cartridge, and the contact portion is inclined from top to bottom from an end close to the first limiting arm to an end away from the first limiting arm.

[0015] As can be seen from the above, the abutting portion provided can undergo a certain deformation when it is buckled onto the top wall of the ink cartridge, thereby giving the ink cartridge a downward elastic force, making the ink cartridge more stably installed.

[0016] A further solution is that a stopper is provided on the machine body near the ink cartridge installation opening, the ink cartridge switch buckle is located above the stopper, and the ink cartridge cooperates with the stopper in the second horizontal direction at an upper limit position.

[0017] As can be seen from the above, the stopper is provided to limit the position of the ink cartridge in the second horizontal direction, so that the installation of the ink cartridge is more stable.

[0018] A further solution is that a avoidance slope is arranged on the stopper, and the avoidance slope is arranged to be inclined from top to bottom from an end away from the ink cartridge installation opening to an end close to the ink cartridge installation opening.

[0019] As can be seen from the above, the avoidance slope allows the ink cartridge switch fastener to open at a larger angle, thereby exposing a larger ink cartridge installation opening, thereby facilitating the installation of the ink cartridge.

[0020] A further solution is that the ink cartridge switch fastener is hinged to the body via a torsion spring; or a positioning piece is provided on the ink cartridge switch fastener, and a positioning fitting piece that cooperates with the positioning piece is provided on the inner wall of the ink cartridge accommodating cavity.

[0021] As can be seen from the above, the use of a torsion spring or a positioning piece in conjunction with the ink cartridge switch fastener can greatly improve the stability of the ink cartridge installation.

[0022] A further solution is that a limit matching groove is provided on the top wall and / or bottom wall of the battery installation cavity, and an elastic protrusion is provided on the battery to limit the limit matching groove, and the elastic protrusion can extend into the limit matching groove and limit the limit matching groove.

[0023] As can be seen from the above, the elastic protrusion and the limiting matching groove enable the battery to fit tightly with the body.

[0024] In summary, it can be seen that the portable inkjet printer of the present invention has a relatively reasonable structural layout, can effectively reduce the volume, and meet the requirements of portability. At the same time, it is easy to operate, the usage scenario is more optimized, and the ink cartridge is stably installed and easy to remove and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a portable inkjet printer embodiment of the present invention from a first viewing angle.

[0026] Figure 2 It is a structural diagram of the portable inkjet printer embodiment of the present invention from a second viewing angle.

[0027] Figure 3 It is a cross-sectional view from a first viewing angle of an embodiment of a portable inkjet printer of the present invention.

[0028] Figure 4 It is a cross-sectional view from a second viewing angle of an embodiment of the portable inkjet printer of the present invention.

[0029] Figure 5 It is a cross-sectional view from a third viewing angle of an embodiment of a portable inkjet printer of the present invention.

[0030] Figure 6It is a cross-sectional view of an ink cartridge switch fastener of an embodiment of a portable inkjet printer of the present invention. DETAILED DESCRIPTION

[0031] See also Figures 1 to 5 The portable inkjet printer provided by the present invention comprises a body 1, a circuit board (not shown in the figure), an ink cartridge 2, a battery 3, a display screen 4, a power switch 5, a start switch 6, a print nozzle 7 and a roller 8. A battery receiving chamber 10, an ink cartridge receiving chamber 11 and a circuit board receiving chamber 12 are provided in the body 1. The circuit board is installed in the circuit board receiving chamber 12, the battery 3 is installed in the battery receiving chamber 10, and the ink cartridge 2 is installed in the ink cartridge receiving chamber 11.

[0032] The battery accommodating chamber 10, the ink cartridge accommodating chamber 11 and the circuit board accommodating chamber 12 are sequentially arranged along the first horizontal direction. The body 1 includes a first side wall 13, a second side wall 14, a third side wall 15 and a fourth side wall 16 connected in sequence. The first side wall 13 and the third side wall 15 are arranged opposite to each other in the second horizontal direction, and the second side wall 14 and the fourth side wall 16 are arranged opposite to each other in the first horizontal direction. The first horizontal direction is perpendicular to the second horizontal direction.

[0033] The ink cartridge receiving chamber 11 has an ink cartridge installation opening 110, which is provided on the first side wall 13 of the machine body 1. The battery receiving chamber 10 has a battery installation opening 100, which is provided on the first side wall 13 and the fourth side wall 16 of the machine body 1, and the battery installation opening 100 is spaced apart from the ink cartridge installation opening 110. Optionally, the battery installation opening 100 may be located on the third side wall 15 or the first side wall 13 alone, or may be provided on both the third side wall 15 and the fourth side wall 16 of the machine body 1.

[0034] The display screen 4 is arranged on the top wall of the body 1, the print nozzle 7 is arranged on the bottom wall of the body 1, and the roller 8 is installed below the body 1 and at least a part of it protrudes outward from the bottom wall. The start switch 6 is arranged on the second side wall 14, and the second side wall 14 is also provided with an anti-slip stripe 9, and the anti-slip stripe 9 is arranged near the start switch 6. The circuit board accommodating chamber 12 is located between the ink cartridge accommodating chamber 11 and the second side wall 14.

[0035] The body 1 is provided with a gripping portion 17, which includes two pressing positions 170, which are respectively arranged on the second side wall 14 and the fourth side wall 16, and the anti-slip stripes 9 are located in the pressing positions 170. Optionally, the anti-slip stripes 9 are arranged in a one-to-one correspondence with the pressing positions 170. The charging port 20 and the communication interface 21 are both arranged on the third side wall 15. Usually, the first side wall 13 faces the palm, so that when charging or transmitting data, the relevant lines will not interfere with the normal use of the printer, and will not affect the printing experience of the operator, thereby optimizing the use scenario. At the same time, the display screen is arranged on the top wall of the body, which can prevent the user's thumb from touching the screen during use, affecting observation and reducing the service life of the screen. Optionally, the gripping portion includes more than two pressing positions, which is convenient for different users to clamp and operate. The charging port and the communication interface are arranged on the third side wall, so that when performing data communication or operating while charging, it does not interfere with the user's operation, and greatly optimizes the use scenario while simplifying the structure.

[0036] Combination Figure 6 , an ink cartridge switch fastener 18 and a stopper 19 are provided on the body 1 near the ink cartridge installation port 110, the ink cartridge switch fastener 18 is hinged above the stopper 19, and the ink cartridge 2 is limitedly matched with the stopper 19 in the second horizontal direction. The ink cartridge switch fastener 18 can rotate between a fastened position and an open position. In the fastened position, the ink cartridge switch fastener 18 locks the ink cartridge 2, and in the open position, the ink cartridge switch fastener 18 is separated from the ink cartridge 2. The ink cartridge switch fastener 18 includes a first limit arm 180, an unlocking portion 181, and a second limit arm 182. When the ink cartridge switch fastener 18 is in the fastened position, the first limit arm 180 is limitedly matched with the side wall of the ink cartridge 2, and the second limit arm 182 is limitedly matched with the top wall of the ink cartridge 2. The unlocking portion 181 is arc-shaped and bends toward the hinged position of the ink cartridge switch buckle 18 and the body 1. In the length direction of the first limit arm 180, the unlocking portion 181 is arranged near one end of the second limit arm 182. In this way, the lever principle is adopted, which is more labor-saving to use. Preferably, the surface of the second limit arm 182 facing the ink cartridge 2 is provided with an abutment portion 183, and the abutment portion 183 is inclined from top to bottom from one end close to the first limit arm 180 to one end away from the first limit arm 180. Optionally, the ink cartridge 2 is provided with anti-skid patterns on the surface opposite to the second limit arm 182. When the ink cartridge switch buckle 18 is buckled, the second limit arm 182 and the anti-skid patterns can be limitedly matched to prevent the ink cartridge switch buckle 18 from rotating. The block 19 is provided with an avoidance slope 190, and the avoidance slope 190 is inclined from top to bottom from one end away from the ink cartridge installation port 110 to one end close to the ink cartridge installation port 110.

[0037] A preferred solution is that the ink cartridge switch buckle 18 is hinged to the body 1 via a torsion spring (not shown in the figure). An alternative solution is that a positioning member (not shown in the figure) is provided on the ink cartridge switch buckle 18, and a positioning matching member (not shown in the figure) that is positioned and matched with the positioning member is provided on the inner wall of the ink cartridge accommodating chamber 11. The positioning member can be a protrusion or a protrusion with a certain elasticity, and the positioning matching member is a groove.

[0038] The top wall and the bottom wall of the battery 3 installation cavity are provided with a limited matching groove 101, and the battery 3 is provided with an elastic protrusion 30 that is limitedly matched with the limited matching groove 101, and the elastic protrusion 30 can extend into the limited matching groove 101. The battery installation port 100 exists on both the first side wall 13 and the fourth side wall 16. Optionally, the battery installation port 100 exists on both the third side wall 15 and the fourth side wall 16, and the limited matching groove 101 can also be separately provided on the top wall or the bottom wall of the battery 3 installation cavity.

[0039] The roller 8 is provided with a first rolling portion 80, a second rolling portion 81 and a track portion 82 along the axial direction of the roller 8. The track portion 82 is located between the first rolling portion 80 and the second rolling portion 81. The diameter of the track portion 82 is smaller than the diameter of the rolling portion. The first rolling portion 80 and the second rolling portion 81 are both provided with a rubber ring 83, which is made of silicone or rubber. Optionally, the number of rollers 8 is more than two groups, and the axes of the more than two groups of rollers 8 are parallel to each other. The provided rubber ring 83 can prevent the risk of slipping when the printer is moved.

[0040] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A portable inkjet printer, characterized in that: include: A body, wherein a battery accommodating chamber, an ink cartridge accommodating chamber and a circuit board accommodating chamber are arranged in the body, the body comprises a first side wall, a second side wall, a third side wall and a fourth side wall connected in sequence, the second side wall and the fourth side wall are arranged opposite to each other in the first horizontal direction, the first side wall and the third side wall are arranged opposite to each other in the second horizontal direction, the ink cartridge accommodating chamber has an ink cartridge installation opening, the ink cartridge installation opening is opened on the first side wall, and the first horizontal direction and the second horizontal direction are perpendicular to each other; A display screen, the display screen being arranged on the top wall of the body; A printing nozzle, the printing nozzle is arranged on the bottom wall of the body; a start switch, wherein the start switch is disposed on the second side wall, and the circuit board accommodating chamber is located between the ink cartridge accommodating chamber and the second side wall; A roller, the roller is installed below the body and at least a portion of the roller protrudes outward from the bottom wall; The machine body is also provided with a gripping portion.

2. The portable inkjet printer according to claim 1, characterized in that: The portable inkjet printer further comprises an ink cartridge, which is installed in the ink cartridge accommodating chamber; An ink cartridge switch buckle is provided on the machine body near the ink cartridge installation port, the ink cartridge switch buckle is hinged to the machine body, and the ink cartridge switch buckle can rotate between a fastening position and an opening position; In the buckled position, the ink cartridge switch buckle locks the ink cartridge; In the open position, the ink cartridge switch catch is separated from the ink cartridge.

3. The portable inkjet printer according to claim 2, characterized in that: The ink cartridge switch fastener comprises a first limiting arm and a second limiting arm which are arranged to intersect each other; When the ink cartridge switch buckle is in the buckled position, the first limit arm is limitedly matched with the side wall of the ink cartridge, and the second limit arm is limitedly matched with the top wall of the ink cartridge.

4. The portable inkjet printer according to claim 3, characterized in that: The ink cartridge switch buckle also includes an unlocking portion, which is disposed on the first limiting arm and extends outward from the first limiting arm away from the side wall of the ink cartridge.

5. The portable inkjet printer according to claim 4, characterized in that: The unlocking portion is arc-shaped and bends toward the hinged position between the ink cartridge switch buckle and the body; and / or In the length direction of the first limiting arm, the unlocking portion is arranged close to one end of the second limiting arm.

6. The portable inkjet printer according to any one of claims 3 to 5, characterized in that: A contact portion is disposed on a surface of the second limiting arm facing the ink cartridge, and the contact portion is inclined from top to bottom from an end close to the first limiting arm to an end away from the first limiting arm.

7. The portable inkjet printer according to any one of claims 3 to 5, characterized in that: The machine body is provided with a stopper near the ink cartridge installation port, the ink cartridge switch buckle is located above the stopper, and the ink cartridge cooperates with the stopper in the second horizontal direction for upper limit positioning.

8. The portable inkjet printer according to claim 7, characterized in that: The stopper is provided with an avoidance slope, and the avoidance slope is inclined from top to bottom from an end away from the ink cartridge installation port to an end close to the ink cartridge installation port.

9. The portable inkjet printer according to any one of claims 2 to 5, characterized in that: The ink cartridge switch buckle is hinged to the machine body via a torsion spring; Alternatively, a positioning piece is provided on the ink cartridge switch buckle, and a positioning matching piece which is positioned and matched with the positioning piece is provided on the inner wall of the ink cartridge accommodating cavity.

10. The portable inkjet printer according to any one of claims 1 to 4, characterized in that: A limit matching groove is provided on the top wall and / or the bottom wall of the battery installation cavity, and an elastic protrusion is provided on the battery to match with the limit matching groove. The elastic protrusion can extend into the limit matching groove and match with the limit matching groove.

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