CN2885583Y

CN2885583Y - Ink cartridge device

Info

Publication number: CN2885583Y
Application number: CN 200620008886
Authority: CN
Inventors: 王铖; 朱铁宏
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2006-03-23
Filing date: 2006-03-23
Publication date: 2007-04-04
Anticipated expiration: 2016-03-23

Abstract

The utility model discloses an ink box device, which comprises an ink body with ink mouth, an ink cover with suction port, an air conducting tune mounted under the suction port, a one-way valve mounted on the foot of the air conducting tune. The one-way valve comprises a valve cover, valve film and a valve base; wherein the valve film is employed with a circular supporting foot, a circular supporting wall and slant wall uplifting from the interior of the supporting foot, a supporting shoulder part bending inward from the slant wall and hollowing downward, a sealing ring part uplifting from the supporting wall and resting on the valve base. The sealing ring part is provided with hole in the centre. The utility model has the advantage of being stable in print and the ink will not overflow.

Description

Ink box device

Technical field

The utility model relates to a kind of Ink box device of ink-jet printer.

Background technology

At present, the employed print cartridge of ink-jet printer is that the ink box cover seam by cartridge body that is provided with ink outlet port and sealing cartridge body forms, and adds ink injection in the cavity between cartridge body and ink box cover, also be provided with on the ink box cover with cartridge body in the air admission hole that is interlinked to the outside.When printer is worked, utilize the suction function of printer ink-sucking port, will be installed on the printer ink in the print cartridge from the ink outlet port sucking-off, realize inkjet printing, air enters in the cartridge body from air admission hole, replenishes the ink of sucking-off, reaches pressure balance.

No. 200420065405.5 Chinese patents of ZL disclose a kind of print cartridge with ink duct, comprise the cartridge body of an inking chamber of tool at least, be provided with the ink outlet port that communicates with inking chamber in the bottom of cartridge body, the top of cartridge body is provided with the ink box cover of sealing inking chamber opening, the upper surface of ink box cover is provided with the black pit of storage, the bottom of storing up black pit is provided with air admission hole, is connected with a pipe that reaches the cartridge body bottom below the air admission hole, at the head of pipe one check valve is housed.

Print cartridge with said structure, when the ink pressure at pipe bottom place during less than atmospheric pressure, one-way valve opens, atmosphere is supplemented in the cartridge body, and when this place's ink pressure equated with atmosphere, closed check valve was realized continuous ink feeding by this.But the check valve that above-mentioned print cartridge uses is a kind of membrane valve, and it is not good itself to close performance, easily from the air inlet position China ink that overflows.

Summary of the invention

The utility model purpose is to propose a kind of preventing from the Ink box device of the excessive China ink of air inlet.

The utility model is achieved by the following technical solution.

Ink box device comprises: cartridge body, have a chamber that holds ink at least, and the bottom is provided with the ink outlet port that communicates with chamber; Ink box cover is used to seal cartridge body, is provided with an air admission hole; The below of air admission hole is located in the air guide chamber, extends under the ink level in the cartridge body; Check valve body places the bottom in air guide chamber, is used to regulate the pressure in the cartridge body; Wherein, check valve body by the valve gap with a valve face, center have outlet valve seat, place the valve film in the space that valve gap and valve seat surround to constitute, the valve center membrane has through hole, and strain can take place for it, makes described through hole be sealed or open by the valve face of valve gap.

Better scheme is that the valve film is wholely set: the support foot of annular; The supporting walls portion of annular comprises inclined wall portion, from the inboard inclination protuberance of described support foot; Support shoulder, constitute from inclined wall portion is crooked to the inside, and, be formed with concave part to lower recess; The sealing ring portion from described supporting walls portion protuberance, is resisted against on the valve face of described valve gap, and central part has through hole.

Better scheme is the bottom that the air guide chamber extends to cartridge body.

According to an aspect of the present utility model, because of the check valve body that is provided with in the air guide chamber of Ink box device has stairstepping, and be to make by elastomeric material, therefore have good self-closing function, it is black effectively to prevent to overflow from air inlet.

According to another aspect of the present utility model, because the air guide chamber extends under the ink level, in print procedure, even along with the consumption of ink in the cartridge body, ink level reduces, but ink outlet port place pressure still remains unchanged, and can guarantee to print stable.

Description of drawings

Fig. 1 is the cutaway view of the utility model Ink box device;

Fig. 2 is the structural representation of check valve body in the utility model Ink box device air guide chamber;

Fig. 3 is the profile of Fig. 2 check valve body.

Introduce Ink box device of the present utility model in detail below in conjunction with accompanying drawing.

The specific embodiment

Referring to the profile of Ink box device shown in Figure 11, Ink box device 1 comprises a cartridge body 2 and an ink box cover 3.Cartridge body 2 has the chamber 21 that holds ink, and its underpart is provided with the ink outlet port 22 that communicates with chamber 21, and top is sealed by ink box cover 3.Ink box cover 3 is provided with an air admission hole 31, is provided with the air guide chamber 32 that links to each other with ink box cover 3 one below air admission hole 31, and the bottom in air guide chamber 32 extends under the ink level, preferably arrives the bottom of chamber 21.The bottom in air guide chamber 32 has an opening 321, by unidirectional valve body 4 shutoff.

Referring to Fig. 2, Fig. 3, check valve body 4 is made of valve gap 41, valve film 42, valve seat 43, and wherein valve gap 41 is moulding with valve seat 43.Valve gap 41 is outer to have a flange 411, the ring-type lower surface of flange 411 to be used for upper surface 431 assembly weldings with valve seat 43, and valve gap 41 bottoms are provided with 412, one valve films of valve face fixed pressure ring 413.Valve seat 43 is provided with an outlet 432, is provided with bulge loop 433 and centers on to export 432 projection 434 on the face that goes out 432 places, and bulge loop 433 and projection 434 are with high.

Valve film 42 is made by elastic caoutchouc, and hardness is Shao Shi 30 degree, and its exterior contour roughly becomes stairstepping, comprises the support foot 421 of an annular, the annular support wall portion 422 and a sealing ring portion 423 of a protuberance.Wherein, Huan Xing support foot 421 contacts with 413 sealings of valve film fixed pressure ring; The supporting walls portion 422 of annular comprises an inclined wall portion 4221 again, and the protuberance and that tilts from the inboard of supporting foot 421 supports shoulder 4222, constitutes from inclined wall portion 422 is crooked to the inside; Sealing ring portion 423 is resisted against on the valve face 412 of valve gap 41 from supporting walls portion 422 protuberances, and its central part has through hole 4231.

Owing to check valve body 4 can be subjected to producing distortion with the rightabout negative pressure influence of atmospheric pressure, therefore aduncate support shoulder 4222 parts on inclined wall portion 4221 can be formed a concave part to lower recess.Guaranteed so just that when check valve body 4 of the present utility model is subjected to negative pressure sealing ring portion 423 can produce suitable skew.

The air guide process of the utility model Ink box device 1 is described below with reference to Fig. 1 to Fig. 3.Under the normal condition, the valve film 42 of check valve body 4 is resisted against by sealing ring portion 423 and forms sealing on the valve gap 41 under the effect of self elastic force.In the print procedure, when the pressure in the cartridge body 2 reduces to certain numerical value Δ P than ambient pressure, the sealing ring portion 423 of valve film 42 breaks away from valve gap 41, and check valve body 4 is opened, and the air in the air guide chamber 32 enters in the cartridge body 1 from the through hole 4231 of sealing ring portion 423, the outlet 432 of valve seat 43.The size of Δ P value can be determined according to the printing negative pressure value of printer.Because check valve body 4 is designed to stairstepping, and, therefore have good self-closing function, can effectively prevent to overflow black from air inlet 31 by the elastomeric material making.In addition, because air guide chamber 32 extends under the ink level, in print procedure, even along with the consumption of ink in the cartridge body 1, ink level reduces, but ink outlet port 22 place's pressure remain constant, can guarantee to print stable.

Though should be understood that the utility model is described by as above preferred embodiment; but according to the technical solution of the utility model; various deformation can also be arranged, and change that technical staff well known in the art makes and distortion all should belong to the protection domain of the utility model claims under the prerequisite that does not break away from the utility model spirit essence.

Claims

1, Ink box device comprises:

Cartridge body has a chamber that holds ink at least, and the bottom is provided with the ink outlet port that communicates with described chamber;

Ink box cover is used to seal described cartridge body, and it is provided with an air admission hole;

The below of described air admission hole is located in the air guide chamber, extends under the ink level in the described cartridge body;

Check valve body places the bottom in described air guide chamber, is used to regulate the pressure in the described cartridge body;

It is characterized in that:

Described check valve body by the valve gap with a valve face, center have outlet valve seat, place the valve film in the space that described valve gap and valve seat surround to constitute, wherein, the center of described valve film is provided with through hole, and strain can take place for it, makes described through hole be sealed or open by the valve face of described valve gap.

2, according to the described Ink box device of claim 1, it is characterized in that:

Described valve film has been wholely set:

The support foot of annular;

The supporting walls portion of annular comprises:

Inclined wall portion is from the inboard inclination protuberance of described support foot;

Support shoulder, constitute from inclined wall portion is crooked to the inside, and, form a concave part to lower recess;

The sealing ring portion from described supporting walls portion protuberance, is resisted against on the valve face of described valve gap, and central part has described through hole.

3, according to claim 1 or 2 described Ink box devices, it is characterized in that:

Described air guide chamber extends to the bottom of cartridge body.