Negative pressure anti-overflow ink box

Abstract

The utility model discloses a negative pressure anti-overflow ink box, which comprises a shell with an opening at the upper part, a cover body covering the upper part of the shell, a first air inlet hole arranged at the left side in the shell, an air inlet pipeline arranged at the rear side of the shell, a second air inlet hole arranged at the middle part of the cover body, an ink conveying pipeline and an inflation channel respectively arranged at the right side in the cover body, an air bag is arranged above the second air inlet hole and located in the shell, a first connecting part capable of connecting the first air inlet hole and the air inlet pipeline is arranged below the shell, a second connecting part capable of communicating the second air inlet hole and the inflation channel is arranged below the shell, a valve closing mechanism is arranged on the first air inlet hole, and a valve opening mechanism is arranged on the second air inlet hole. The cover body is provided with the connecting mechanism capable of fixedly connecting the cover body and the shell, the ink outlet is formed in the left side of the shell, and compared with the prior art, ink can be stably supplied, and the conditions of ink breakage and ink leakage are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of ink cartridges, in particular to a negative pressure overflow-proof ink cartridge. Background Art

[0002] The existing ink cartridge air control valves all install a valve membrane in the air inlet chamber, and control the air pressure inside the ink cartridge through the deformation of the valve membrane. However, the material requirements for the valve membrane are high. If the material does not meet the standards or deteriorates, or there are problems in the material storage process, the elastic deformation of the valve membrane will be unstable, resulting in an unstable internal structure of the air control valve, and unstable ink supply, resulting in ink disconnection. At the same time, due to the constant changes in the pressure in the ink cartridge, ink leakage will occur. Utility Model Content

[0003] The purpose of the utility model is to provide a negative pressure anti-overflow ink cartridge, which can solve at least one of the above technical problems. The technical solution of the utility model is as follows:

[0004] A negative pressure anti-overflow ink cartridge comprises: an open shell at the top, a cover and a covered body at the top of the shell, a first air inlet hole is provided on the left side of the shell, an air inlet pipe is provided on the rear side of the shell, a second air inlet hole is provided in the middle of the cover body, an ink delivery pipe and an air charging channel are provided on the right side of the cover body, an air bag is provided in the shell above the second air inlet hole, a first connecting part capable of connecting the first air inlet hole and the air inlet pipe is provided below the shell, a second connecting part capable of connecting the second air inlet hole and the air charging channel is provided below the shell, a closing valve mechanism is provided on the first air inlet hole, a connecting mechanism capable of fixedly connecting the cover body and the shell is provided on the cover body, and an ink outlet is provided on the left side of the shell.

[0005] Furthermore, the first connecting portion includes a first connecting groove arranged on the right side below the shell, the first connecting groove is connected to the first air inlet hole and the air inlet pipe respectively, and a first sealing plate is covered below the first connecting groove below the shell.

[0006] Furthermore, the second connecting portion includes a second connecting groove arranged on the left side below the shell, the second connecting groove is connected to the second air inlet hole and the inflation channel respectively, and a second sealing plate is covered below the second connecting groove below the shell.

[0007] Furthermore, the valve closing mechanism includes a plurality of guide rods fixed in the shell and fixed around the airbag, a baffle is provided on the airbag, the baffle is movably inserted in each of the guide rods, a baffle ring is provided in the first air inlet hole, a closed sphere is provided in the first air inlet hole, a circular plate is fixed above the closed sphere, guide plates are fixed on the left and right sides of the circular plate, the guide plate is movably inserted in the outer wall of the first air inlet hole, a support rod is fixed in the shell on the right side of the first air inlet hole, a connecting rod is movably connected between the circular plate and the baffle, a waist-shaped groove is provided in the middle of the connecting rod, the connecting rod is movably hinged to the support rod through the waist-shaped groove, and a tension spring is connected between the circular plate and the baffle.

[0008] Furthermore, the connecting mechanism includes an extended edge fixed on the front side of the shell, a buckle hook is provided at the lower front side of the cover body, the buckle hook is arranged on the extended edge, a plurality of buckle blocks are fixed on the rear side of the cover body, a plurality of buckles are fixed on the rear side of the shell, and the buckle blocks are buckled on the buckles.

[0009] Preferably, the airbag and the second air inlet hole are provided with an internal thread and an external thread respectively.

[0010] Preferably, a sealing edge is fixed on the lower periphery of the cover body.

[0011] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0012] The utility model provides a negative pressure anti-overflow ink cartridge, which delivers ink into a shell through an ink delivery pipe during use, and forms a negative pressure in the shell. When a certain value is reached, a valve closing mechanism opens the connection between the shell and the first air inlet, and external air enters the shell through the first connecting part. When the air intake reaches the stability of the shell, the valve closing mechanism resets to close the first air inlet, and this cycle is repeated, which effectively improves the stability of ink output and improves the occurrence of ink disconnection. When the printer is cleaned or ink is added, the printer blows air into the airbag through the second air inlet and the second connecting part, and the airbag expands. Since the valve closing mechanism is connected to the airbag, the valve closing mechanism is driven by the airbag, so that the first air inlet is closed, and the cover body is fixedly connected to the cover body and the shell through the connecting mechanism. Compared with the prior art, the ink supply can be stabilized to avoid ink disconnection and ink leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0014] Figure 2 It is one of the half-section schematic diagrams of the utility model.

[0015] Figure 3 This is the second half-section schematic diagram of the present utility model.

[0016] Figure 4 This is one of the exploded schematic diagrams of the utility model.

[0017] Figure 5 This is the second schematic diagram of the new decomposition of the present invention.

[0018] Explanation of the accompanying drawings: 1. shell; 2. cover; 3. first air inlet; 4. second air inlet; 5. ink delivery pipe; 6. inflation channel; 7. air bag; 8. air inlet pipe; 9. ink outlet; 100. first connecting part; 200. second connecting part; 300. valve closing mechanism; 400. connecting mechanism; 101. first connecting groove; 102. first sealing plate; 201. second connecting groove; 202. second sealing plate; 301. guide rod; 302. baffle; 303. baffle ring; 304. closed sphere; 305. circular plate; 306. guide plate; 307. support rod; 308. connecting rod; 309. waist groove; 401. extension edge; 402. hook; 403. buckle block; 404. buckle; 41. internal thread; 42. external thread; 21. sealing edge. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0020] like Figures 1 to 5 The negative pressure anti-overflow ink cartridge shown is characterized in that it includes: an open shell 1 at the top, a cover body 2 is covered on the top of the shell 1, a sealing edge 21 is fixed on the periphery of the bottom of the cover body 2, a first air inlet hole 3 is provided on the left side of the shell 1, an air inlet pipe 8 is provided on the rear side of the shell 1, a second air inlet hole 4 is provided in the middle of the cover body 2, an ink delivery pipe 5 and an air charging channel 6 are provided on the right side of the cover body 2, an air bag 7 is provided in the shell 1 above the second air inlet hole 4, an internal thread 41 and an external thread 42 are provided on the air bag 7 and the second air inlet hole 4 respectively, a first connecting portion 100 capable of connecting the first air inlet hole 3 and the air inlet pipe 8 is provided below the shell 1, a second connecting portion 200 capable of connecting the second air inlet hole 4 and the air charging channel 6 is provided below the shell 1, a closing valve mechanism 300 is provided on the first air inlet hole 3, a connecting mechanism 400 capable of fixedly connecting the cover body 2 and the shell 1 is provided on the cover body 2, and an ink outlet 9 is provided on the left side of the shell 1.

[0021] A negative pressure anti-overflow ink cartridge with the above structure delivers ink to the shell body 1 through the ink delivery tube 5 when in use, and a negative pressure is formed in the shell body 1. When a certain value is reached, the valve closing mechanism 300 opens the connection between the shell body and the first air inlet 3, and the external air enters the shell body 1 through the first connecting part 100. When the air intake reaches the stable state of the shell body 1, the valve closing mechanism 300 resets and closes the first air inlet 4, and this cycle is repeated, which effectively improves the stability of ink output and improves the occurrence of ink disconnection. When the printer is cleaned or ink is added, the printer blows air into the airbag 7 through the second air inlet 4 and the second connecting part 200, and the airbag 7 expands. Since the valve closing mechanism 300 is connected to the airbag, the valve closing mechanism 300 is driven by the airbag 7, so that the first air inlet 3 is closed, and the cover body 1 is fixedly connected to the cover body 2 and the shell body 1 through the connecting mechanism 400. Compared with the prior art, it can stabilize the ink supply and avoid ink disconnection and ink leakage.

[0022] like Figure 2 and 5 As shown, in some embodiments of the utility model, the first connecting portion 100 includes a first connecting groove 101 arranged on the right side below the shell 1, and the first connecting groove 101 is respectively connected to the first air inlet hole 3 and the air inlet duct 8. A first sealing plate 102 is covered below the first connecting groove 101 below the shell 1. External air enters through the air inlet duct 8, and then enters the shell 1 through the first connecting groove 101 toward the first air inlet hole 3. The first connecting groove 101 is sealed by the first sealing plate 102.

[0023] like Figure 3 and 5 As shown, in some embodiments of the utility model, the second connecting portion 200 includes a second connecting groove 201 arranged on the left side below the shell 1, and the second connecting groove 201 is respectively connected to the second air inlet hole 4 and the inflation channel 6. A second sealing plate 202 is covered below the second connecting groove 201 below the shell 1. The printer transports air to the second connecting groove 201 through the inflation channel 6, so that the second connecting groove 201 inflates the airbag 7 through the second air inlet hole 4, and the second connecting groove 201 is sealed by the second sealing plate 202.

[0024] like Figures 2 to 4As shown, in some embodiments of the utility model, the valve closing mechanism 300 includes a plurality of guide rods 301 fixed in the housing 1 and around the airbag 7, a baffle 302 is provided on the airbag 7, and the baffle 302 is movably plugged into each of the guide rods 301, a baffle ring 303 is provided in the first air inlet hole 3, a closed sphere 304 is provided in the first air inlet hole 3, a circular plate 305 is fixed above the closed sphere 304, and a circular plate 305 is provided on the left and right sides of the circular plate 305. Guide plates 306 are fixed on both sides, and the guide plates 306 are movably inserted into the outer wall of the first air inlet hole 3. A support rod 307 is fixed inside the shell 1 on the right side of the first air inlet hole 3. A connecting rod 308 is movably connected between the circular plate 305 and the baffle 302. A waist-shaped groove 309 is provided in the middle of the connecting rod 308. The connecting rod 308 is movably hinged on the support rod 307 through the waist-shaped groove 309. A tension spring 310 is connected between the circular plate 305 and the baffle 302.

[0025] When a negative pressure anti-overflow ink cartridge using the above structure is in operation, when the pressure in the shell 1 is too high during use, the external air will push the closed ball 304 away from the baffle ring 303. At this time, the closed ball 304 moves upward along the first air inlet 3 through the guide plates 306 fixed on the left and right sides of the circular plate 305. When the pressure reaches equilibrium, the circular plate 305 is reset by the tension spring 310 connected between the circular plate 305 and the baffle 302, and at the same time, the closed ball 304 cover is covered on the baffle ring 303. When ink needs to be added, the airbag 7 is inflated through the printer, so that the airbag 7 drives the baffle 302 to move upward along the guide rod 301, and when the baffle 302 moves, it drives the connecting rod 308 to swing on the support rod 307, and when the connecting rod 308 swings, it drives the circular plate 305 to move downward.

[0026] like Figure 4 As shown, in some embodiments of the utility model, the connecting mechanism 400 includes an extended edge 401 fixed on the front side of the shell 1, a hook 402 is provided at the lower front side of the cover body 2, the hook 402 is hooked on the extended edge 401, a plurality of snap blocks 403 are fixed on the rear side of the cover body 2, a plurality of buckles 404 are fixed on the rear side of the shell 1, and the snap blocks 403 are snap-fitted on the buckles 404.

[0027] When a negative pressure anti-overflow ink cartridge with the above structure is in operation, the user moves the cover body 2 toward the shell body 1. At this time, the user inserts the hook 402 provided at the lower front side of the cover body 2 into the extended edge 401 on the front side of the shell body 1, and then the user closes the cover body 2 downward. At this time, the multiple snap blocks 403 fixed on the rear side of the cover body 2 are snapped into the multiple buckles 404 fixed on the rear side of the shell body 1.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A negative pressure anti-overflow ink cartridge, characterized in that: include: A shell (1) is open at the top, a cover and a lid body (2) are provided above the shell (1), a first air inlet (3) is provided on the left side of the shell (1), an air inlet pipe (8) is provided on the rear side of the shell (1), a second air inlet (4) is provided in the middle of the lid body (2), an ink delivery pipe (5) and an air charging channel (6) are provided on the right side of the lid body (2), an air bag (7) is provided in the shell (1) above the second air inlet (4), a first connecting portion (100) capable of connecting the first air inlet (3) and the air inlet pipe (8) is provided below the shell (1), a second connecting portion (200) capable of connecting the second air inlet (4) and the air charging channel (6) is provided below the shell (1), a closing valve mechanism (300) is provided on the first air inlet (3), a connecting mechanism (400) capable of fixedly connecting the lid body (2) and the shell (1) is provided on the lid body (2), and an ink outlet (9) is provided on the left side of the shell (1).

2. A negative pressure anti-overflow ink cartridge according to claim 1, characterized in that The first connecting portion (100) comprises a first connecting groove (101) arranged on the right side below the shell (1), the first connecting groove (101) being connected to the first air inlet hole (3) and the air inlet pipe (8) respectively, and a first sealing plate (102) is provided below the first connecting groove (101) below the shell (1).

3. A negative pressure anti-overflow ink cartridge according to claim 1, characterized in that The second connecting portion (200) comprises a second connecting groove (201) arranged on the left side below the shell (1), the second connecting groove (201) being connected to the second air inlet hole (4) and the air charging channel (6) respectively, and a second sealing plate (202) is provided below the shell (1) and below the second connecting groove (201).

4. The negative pressure anti-overflow ink cartridge according to claim 1, characterized in that The valve closing mechanism (300) comprises a plurality of guide rods (301) fixed in the housing (1) and fixed around the airbag (7); a baffle (302) is provided on the airbag (7); the baffle (302) is movably plugged into each of the guide rods (301); a baffle ring (303) is provided in the first air inlet hole (3); a closed sphere (304) is provided in the first air inlet hole (3); a circular plate (305) is fixed above the closed sphere (304); and guide plates (305) are fixed on the left and right sides of the circular plate (305). 6), the guide plate (306) is movably inserted into the outer wall of the first air inlet (3), a support rod (307) is fixed inside the shell (1) on the right side of the first air inlet (3), a connecting rod (308) is movably connected between the circular plate (305) and the baffle (302), a waist-shaped groove (309) is provided in the middle of the connecting rod (308), the connecting rod (308) is movably hinged on the support rod (307) through the waist-shaped groove (309), and a tension spring (310) is connected between the circular plate (305) and the baffle (302).

5. The negative pressure anti-overflow ink cartridge according to claim 1, characterized in that The connecting mechanism (400) comprises an extended edge (401) fixed to the front side of the shell (1); a buckle hook (402) is provided at the lower front side of the cover body (2); the buckle hook (402) is hooked on the extended edge (401); a plurality of buckle blocks (403) are fixed to the rear side of the cover body (2); a plurality of buckles (404) are fixed to the rear side of the shell (1); the buckle blocks (403) are buckled on the buckles (404).

6. The negative pressure anti-overflow ink cartridge according to claim 1, characterized in that The air bag (7) and the second air inlet hole (4) are respectively provided with an internal thread (41) and an external thread (42).

7. The negative pressure anti-overflow ink cartridge according to claim 1, characterized in that A sealing edge (21) is fixed on the lower periphery of the cover body (2).

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