WO2011124134A1 - 喷墨打印机墨盒 - Google Patents

喷墨打印机墨盒 Download PDF

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Publication number
WO2011124134A1
WO2011124134A1 PCT/CN2011/072494 CN2011072494W WO2011124134A1 WO 2011124134 A1 WO2011124134 A1 WO 2011124134A1 CN 2011072494 W CN2011072494 W CN 2011072494W WO 2011124134 A1 WO2011124134 A1 WO 2011124134A1
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WO
WIPO (PCT)
Prior art keywords
ink
ring
ink outlet
outlet
circumferential surface
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PCT/CN2011/072494
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English (en)
French (fr)
Inventor
陈达飞
吴泽
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珠海天威技术开发有限公司
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Application filed by 珠海天威技术开发有限公司 filed Critical 珠海天威技术开发有限公司
Publication of WO2011124134A1 publication Critical patent/WO2011124134A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17596—Ink pumps, ink valves

Definitions

  • This invention relates to ink jet printer cartridges, and more particularly to ink jet printer cartridges having ink reservoirs as their ink reservoir members.
  • the recording head adapted to the ink cartridge is disposed on the inkjet printer carriage, and the ink cartridge as the ink container is detachably mounted in the inkjet printer, and is passed through the ink supply needle and the corresponding ink flow path on the recording head.
  • the nozzles remain connected.
  • the present invention is based on a Chinese utility model patent application filed on Apr. 07, 2010, the number of which is incorporated herein by reference.
  • An inkjet printer which is usually printed by an ink container such as an ink cartridge, supplies ink to a recording head via a corresponding ink flow conduit, and ejects ink from a nozzle provided on the recording head under the driving of a printing signal.
  • an ink container such as an ink cartridge
  • supplies ink to a recording head via a corresponding ink flow conduit, and ejects ink from a nozzle provided on the recording head under the driving of a printing signal.
  • To the recording media page such as paper, to complete the recording of characters or graphics.
  • Common commercially available inkjet printers can be classified into piezoelectric inkjet printers and bubble jet printers depending on the configuration of their nozzles.
  • Piezoelectric inkjet printers are provided with one or more piezoelectric crystals on each side of the ink flow pipe near the nozzle of the recording head.
  • the piezoelectric crystal is controlled by a data-modulated printing signal to cause contraction or expansion deformation, and the ink in the extrusion nozzle is ejected from the nozzle to form fine droplets, which are splashed onto a page of a recording medium such as paper to form a recording dot.
  • a bubble jet printer has a recording head structure similar to that of a piezoelectric ink jet printer. It differs from a piezoelectric ink jet printer in that a bubble jet printer is provided with a heating electrode on the inner wall or the outer wall of the ink flow pipe near the nozzle of the recording head.
  • the data modulated electrical pulse signal is sent to the heating electrode of the nozzle, and the heating electrode is rapidly heated to rapidly vaporize the ink near the nozzle to form a bubble.
  • the pressure generated by the expansion of the bubble causes the ink to form a fine droplet of ink from the nozzle and splashes onto the sheet of paper.
  • the ink vapor condenses, and the ink in the nozzle is maintained at a level close to the outer surface of the nozzle by the surface tension.
  • the negative pressure formed by the ink flow tube after the ink is drawn by the recording head guides the ink in the ink storage chamber into the ink flow path where the nozzle is located.
  • the ink container or ink cartridge that matches it needs to consider the following problem, that is, the ink outlet of the ink cartridge should be turned on when there is a print job, in a timely manner
  • the nozzles of the inkjet printer supply ink and are turned off in the absence of a print job, while interrupting the flow of ink and preventing outflow of ink.
  • the ink cartridge should be capable of generating a proper negative pressure in its ink containing chamber and maintaining the negative pressure state in a relatively stable state.
  • the negative pressure should be sufficient to prevent ink from flowing out; when the printer has a print job, the negative pressure should not interfere with the suction exerted by the suction force generated by the printer on the ink cartridge. Or, in the structural state without the negative pressure mechanism, effective opening/closing control can be performed on the ink outlet.
  • the ink cartridge used in the conventional ink jet printer uses a one-way valve in the interior thereof to control the flow state of the ink, or a negative pressure generating mechanism such as a sponge to realize and maintain the ink.
  • the pressure in the chamber is accommodated, or the ink bag is used to add a valve to control the opening/closing state of the ink outlet.
  • the ink cartridge 100 using the ink bag as an ink containing device see Figs. 1, 2, and 3, is composed of a cover 101, a case 102, and an ink bag 103.
  • the ink bag 103 After the ink bag 103 is filled with ink, it is placed in the cavity 104 formed by the cover 101 and the case 102 being closed together, and the ink outlet 105 provided on the ink bag 103 is barely placed on a smaller side of the case 102.
  • a valve 106 is provided in the ink outlet 105 for controlling the opening/closing state of the ink outlet 105.
  • the valve 106 is composed of a spring 107, a valve body 108 and a sealing ring 109.
  • the spring 107 is pressed against the ink outlet 105, one end of the valve core 108 is crimped onto the spring 107 and the other end with the sealing plate 110 is pressed against the inner wall of the sealing ring 109, the sealing ring 109 is sealed at the outermost portion of the ink outlet 105 and is sealed with the inner peripheral surface of the ink outlet 105.
  • the compression spool 108 is axially retracted into the ink outlet 105 along the ink outlet 105, and the spring 107
  • the shrinkage deformation is also performed under the compression of the valve body 108, so that the passage of the inner cavity of the ink bag 103 with the external environment is established via the ink supply needle.
  • the sealing ring 109 has a sealing effect on the inner circumferential surface of the ink outlet 105, and the axial small inner outlet on the axial inner end surface of the sealing ring 109 is sealed by the valve core 108.
  • the plate 110 is closed in a compressional form.
  • the sealing ring 109 closes the inner circumferential surface of the ink outlet 105 by placing a first ring 111 having a larger diameter on the outer circumferential surface of the sealing ring 109, and the first ring 111 is closely attached. This is achieved in the manner of the inner peripheral surface of the ink outlet 105. Since the spring 107 generates a force for the spool 108 and the seal ring 109 to axially exit the ink outlet 105 along the ink outlet 105, the seal 109 is often ejected out of the ink outlet 105, or is out.
  • An obliquely disposed state is formed in the ink port 105, that is, the axis of the seal ring and the axis of the ink outlet port 105 intersect, causing the sealed state to be broken, resulting in ink leakage, bleeding, and the like of the ink outlet port 105.
  • an object of the present invention is to provide an ink jet printer cartridge which uses an ink bag as its ink storing member and which has an excellent ink discharge port on the ink bag.
  • An ink jet printer cartridge designed according to the above object of the present invention comprises a casing, a lid, and an ink bag.
  • An ink outlet is provided on the ink bag.
  • the ink outlet is exposed on one of the side walls of the casing.
  • a valve is provided in the ink outlet.
  • the valve consists of a spring, a valve plug and a sealing ring.
  • the sealing ring closes the ink outlet with the first ring provided on the outer peripheral surface thereof abutting against the inner circumferential surface of the ink outlet.
  • the axial outer end surface of the ink outlet is provided with a buckle for fastening the sealing ring into the ink outlet.
  • the fastening members are four and symmetric with respect to the axial direction of the ink outlet.
  • the inner circumferential surface of the ink discharge port is provided with a first annular groove at a portion corresponding to the first annular ring.
  • the first ring buckle is placed in the first ring groove.
  • a second ring juxtaposed with the first ring is additionally disposed on the outer circumferential surface of the sealing ring and is disposed in a second ring groove additionally provided on the inner circumferential surface of the ink outlet.
  • the ink jet printer cartridge has a shrink ring having a diameter smaller than an inner peripheral surface of the ink discharge port on an inner circumferential surface of the ink discharge port.
  • the shrink ring is located outside the ring adjacent the outside of the ink outlet. The surface of the shrink ring is pressed against the surface of the ring adjacent the outside of the ink outlet.
  • the inkjet printer cartridge of the present invention is provided with a buckle on the axially outer end surface of the ink outlet, and/or an additional ring on the outer peripheral surface of the seal ring, which is juxtaposed with the original ring, and
  • the way of setting the shrink ring on the inner peripheral surface of the ink outlet port can be used to fasten the seal ring into the ink discharge port through the buckle member or prevent the seal ring from coming out from the ink outlet port, and the inner ring surface of the ink outlet port can be reinforced by the added ring. Contact friction and tightness allow the seal ring to be provided with a guard against the exit of the ink outlet through the shrink ring.
  • valve in the ink outlet of the ink cartridge can maintain a stable structural state, and the sealing ring will be securely fastened to the outer end of the ink outlet along its own axial direction without being pulled out by the thrust of the spring. Outside the ink port, it provides a stable and firm sealing effect on the ink outlet.
  • Figure 1 is a perspective view of a conventional ink jet printer cartridge
  • Figure 2 is an anatomical view of the ink outlet of the ink jet printer cartridge
  • Figure 3 is a partial cross-sectional view showing the assembled state of the ink outlet of the ink jet printer cartridge
  • Figure 4 is an anatomical view of the ink outlet of the ink jet printer cartridge of the present invention.
  • Figure 5 is a partial cross-sectional view showing the ink outlet of the ink jet printer cartridge of the present invention.
  • Figure 6 is a perspective view of a sealing ring used in the ink jet printer cartridge of the present invention.
  • Figure 7 is a partial cross-sectional view showing the assembled state of the ink outlet of the ink jet printer cartridge of the present invention.
  • FIG. 4-7 in conjunction with Figure 1, a perspective view of an ink jet printer cartridge of the present invention, a cross-sectional view of the ink outlet, and a perspective view of the seal ring are shown, respectively.
  • the ink cartridge 100 of the present invention is composed of a lid 101, a cartridge 102, and an ink bag 103. After the ink bag 103 is filled with ink, it is placed in the cavity 104 formed by the cover 101 and the case 102 being closed together, and the ink outlet 105 provided on the ink bag 103 is barely placed on a smaller side of the case 102. On the wall. A valve 106 is provided in the ink outlet 105 for controlling the opening/closing state of the ink outlet 105.
  • the valve 106 is composed of a spring 107, a valve body 108 and a sealing ring 109.
  • the spring 107 is pressed against the ink outlet 105, one end of which is crimped onto the spring 107 and the other end with the sealing plate 110 pressed against the axial end wall of the sealing ring 109.
  • the seal ring 109 is sealed at the outermost portion of the ink discharge port 105 and is sealed with the inner peripheral surface of the ink discharge port 105.
  • the basic sealing form of the seal ring 109 to the inner peripheral surface of the ink outlet 105 is such that the larger diameter first ring 111 provided on the outer peripheral surface thereof is in close contact with the inner peripheral surface of the ink outlet 105. achieve.
  • the first annular groove 112 is provided at a portion of the inner circumferential surface of the ink outlet 105 corresponding to the first circular ring 111.
  • the first ring 111 is buckled in the first ring groove 112.
  • a second ring 113 which is juxtaposed with the first ring 111 in the axial direction of the seal ring 109 is additionally provided.
  • an additional arrangement is provided along the axial direction of the ink outlet 105 to the first ring.
  • the second annular groove 114 is juxtaposed by the groove 112. In the assembled state, the second ring 113 is fastened into the second ring groove 114 to provide an additional repositioning and sealing function for the sealing ring 109. In a state where the seal ring 109 is fitted into the ink discharge port 105, the position of the first ring 111 is axially adjacent to the outer side of the ink discharge port 105 along the ink discharge port 105.
  • the four latching members 115 are provided on the axially outer end surface of the ink outlet 105.
  • the four latching members 115 are symmetric with respect to the axial direction of the ink outlet 105 in the axial cross section of the ink outlet 105, that is, uniformly distributed on the axially outer end surface of the ink outlet 105.
  • One end of the buckle member 115 is fixed on the axially outer end surface of the ink outlet port 105, and a portion thereof extends into the nozzle opening of the ink outlet port 105 along the diameter direction of the ink outlet port 105, so that the sealing ring 109 is buckled in the assembled state.
  • the member 115 is fastened into the ink outlet 105, and the non-destructive disassembly cannot be taken out from the ink outlet 105, thereby providing a repositioning effect for the sealing ring 109 to prevent the spring 107 from pushing the valve core 108 and the sealing ring 109. Thereafter, the seal ring 109 is withdrawn or slipped out of the ink outlet port 105.
  • a shrink ring 116 having a diameter smaller than the inner circumferential surface of the ink discharge port 105 is provided on the inner peripheral surface of the ink discharge port 105.
  • the position of the shrink ring 116 is close to the outside of the first ring 111 distributed outside the ink outlet 105, that is, along the axial direction of the ink outlet 105, the shrink ring 116 is located in the first circle.
  • the ring 111 faces the side of the outside of the ink outlet 105.
  • the degree of contraction of the shrink ring 116 is preferably such that the surface thereof can be crimped to the surface of the first ring 111, that is, in Fig.
  • the shrink ring 116 is closely adjacent to the first ring 111.
  • an axial constraint is provided to the first ring 111, which provides a repositioning guarantee for the sealing ring 109 to prevent the spring 107 from pushing the valve core 108 and the sealing ring 109 to release the sealing ring 109 from the ink outlet. 105.
  • the present invention provides a buckle on the axially outer end surface of the ink outlet, and/or an additional ring on the outer circumferential surface of the seal ring, which is juxtaposed with the original ring, and the inner circumferential surface of the ink outlet.
  • the way of setting the shrink ring can be used to fasten the seal ring into the ink outlet through the buckle member, effectively preventing the seal ring from coming out of the ink outlet; and the contact friction and sealing between the seal ring and the inner peripheral surface of the ink outlet can be enhanced by the added ring.
  • the sealing ring can be provided with a protective threshold for sliding the ink outlet through the shrink ring, and the sealing ring is effectively prevented from tilting in the ink outlet.
  • valve in the ink outlet of the ink cartridge can maintain a stable structural state, and the sealing ring will be securely fastened to the outer end of the ink outlet along its own axial direction without being pulled out to the ink by the thrust of the spring. Outside the mouth, it provides a stable and reliable sealing effect on the ink outlet.

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  • Ink Jet (AREA)

Description

喷墨打印机墨盒 技术领域
本发明涉及喷墨打印机墨盒，特别是以墨囊作为其储墨构件的喷墨打印机墨盒。同该墨盒适配的记录头被设置于喷墨打印机字车上，作为墨水容器的墨盒则以可拆卸的方式安装在喷墨打印机内，并通过供墨针和相应墨水流动通路同记录头上的喷嘴保持连通。本发明基于申请日为2010年04月07日、申请号为201020152108.X的中国实用新型专利申请，该申请的内容作为与本发明密切相关的参考文献引入本文。
背景技术
喷墨打印机，其打印方式通常是由墨盒之类的墨水容器提供墨源，经由相应的墨水流动管道将墨水输运至记录头，在打印信号的驱动下将墨水自记录头上设置的喷嘴喷射至纸张等记录介质页面上，来完成字符或图形的记录。常见的市售喷墨打印机根据其喷嘴的结构形式，可以分为压电式喷墨打印机和气泡式喷墨打印机。
压电式喷墨打印机，是在其记录头喷嘴附近的墨水流动管道两侧各设置一块或多块压电晶体。压电晶体受到由数据调制的打印信号控制，产生收缩或膨胀变形，挤压喷嘴中的墨水自喷嘴射出后形成微细的液滴，溅落至记录介质例如纸张的页面上，形成一个记录点。
气泡式喷墨打印机，其记录头结构与压电式喷墨打印机相似。它与压电式喷墨打印机的区别是，气泡式喷墨打印机在记录头喷嘴附近的墨水流动管道内壁或外壁上设置了加热电极。数据调制的电脉冲信号被送到喷嘴的加热电极上，加热电极快速升温，使喷嘴附近的墨水迅速汽化，形成汽泡。汽泡膨胀产生的压力使墨水自喷嘴射出后形成一个个微细的墨滴，溅落至纸张页面上。电脉冲消失后，墨水蒸汽凝聚，喷嘴内的墨水通过表面张力维持在与喷嘴外表面齐口的水平。记录头抽取墨水后在墨水流动管形成的负压引导储墨腔内的墨水流入喷嘴所在的墨水流动管道。
无论是压电式喷墨打印机，还是气泡式喷墨打印机，与其相匹配的墨水容器或墨盒均需要考虑以下问题，即墨盒的出墨口应当在有打印任务时处于开启状态，以适时地向喷墨打印机的喷嘴供应墨水，而在无打印任务时处于关闭状态，以及时掐断墨水的流动和防止墨水外流。这就要求，在结构上，墨盒应当在其墨水容纳腔中能够产生适当的负压，并维持该负压状态处于相对稳定的状态。在打印机无打印任务时，该负压应当足以阻止墨水外流；在打印机有打印任务时，该负压应当不妨碍打印机产生的抽吸力对墨盒施加的抽吸作用。或者在无负压机构的结构状态下，能够对出墨口实施有效的开启/关闭控制。
在上述结构要求之下，现有喷墨打印机使用的墨盒，或者较多地在其内部使用单向阀来实现前述墨水流动状态的控制，或者使用海绵等负压生成机构来实现和维持其墨水容纳腔中的压力，或者利用墨囊加阀门来控制出墨口的开启/关闭状态。其中，以墨囊作为墨水容纳装置的墨盒100，参见图1、2、3，它由盒盖101、盒体102和墨囊103构成。墨囊103盛满墨水后被放置于由盒盖101、盒体102共同封闭后形成的盒腔104中，墨囊103上设置的出墨口105裸置于盒体102的一个较小的侧壁上。在出墨口105中设置有阀门106，用来控制出墨口105的开启/关闭状态。阀门106由弹簧107、阀芯108和密封圈109构成。在装配状态下，弹簧107被压抵在出墨口105中，阀芯108的一端压接在弹簧107上而其带有密封板110的另一端压抵在密封圈109的内壁上，密封圈109封堵在出墨口105的最外部并同出墨口105的内周面保持密封。在应用墨盒100向喷墨打印机供应墨水的状态下，喷墨打印机的供墨针插入密封圈109后，压迫阀芯108沿出墨口105轴向退入出墨口105内部，同时弹簧107 也在阀芯108压迫下做收缩形变，如此，墨囊103内腔同外部环境的通路经由供墨针得以建立。在墨盒100的非工作状态下，密封圈109对出墨口105的内周面具有封闭作用，密封圈109轴向内端面上为供墨针预留的轴向小出口由阀芯108的密封板110以压迫形式封闭。
 技术问题
这种构造形式的墨盒100，其密封圈109对出墨口105内周面的封闭是通过在密封圈109外周面上设置直径更大的第一圆环111，以第一圆环111紧贴于出墨口105内周面上的方式来实现。由于弹簧107对阀芯108和密封圈109产生使它们沿出墨口105轴向退出出墨口105的作用力，以致密封圈109常常会被顶出至出墨口105之外，或在出墨口105内形成倾斜布置状态，即密封圈的轴线与出墨口105的轴线出现交叉现象，致使密封状态被破坏而导致出墨口105发生漏墨、渗墨等现象。
技术解决方案
针对上述问题，本发明目的在于提供一种以墨囊作为其储墨构件，其墨囊上的出墨口密封性良好的喷墨打印机墨盒。
按照上述本发明目的设计的喷墨打印机墨盒，包括盒体、盒盖、墨囊。墨囊上设置有出墨口。出墨口裸露在盒体的侧壁之一上。出墨口中设置有阀门。阀门由弹簧、阀芯和密封圈构成。密封圈以其外周面上设置的第一圆环紧贴于出墨口内周面上的方式封闭出墨口。出墨口的轴向外端面上设置有把密封圈扣入出墨口内的扣位件。
前述喷墨打印机墨盒，其扣位件为四个并对称于出墨口的轴向。
较好地，前述喷墨打印机墨盒，其出墨口内周面对应于第一圆环的部位设置有第一环槽。第一圆环扣置于第一环槽中。密封圈的外周面上另外设置有同第一圆环并列的第二圆环并扣置于在出墨口内周面上另外增设的第二环槽中。
较优地，前述喷墨打印机墨盒，在其出墨口内周面上设置有直径小于出墨口内周面的收缩环。沿着出墨口轴向，该收缩环位于靠近出墨口外部的圆环的外侧。收缩环的表面压抵于靠近出墨口外部的圆环的表面。
 有益效果
本发明的喷墨打印机墨盒，通过在出墨口的轴向外端面上设置扣位件，和/或在密封圈的外周面上额外增加设置一道同原有圆环并列的圆环，以及在出墨口内周面上设置收缩环的方式，可以通过扣位件把密封圈扣入出墨口内或者防止密封圈从出墨口内脱出，可以通过增设的圆环加强密封圈同出墨口内周面的接触摩擦和密封性，可以通过收缩环对密封圈提供其滑出出墨口的防范门槛。在这种结构方式下，墨盒出墨口内的阀门可以保持稳定的结构状态，其密封圈将牢固地扣置于出墨口沿自身轴向的外端部而不会因弹簧的推力脱出至出墨口之外，从而对出墨口提供稳定而牢靠的密封作用。
附图说明
图1现有喷墨打印机墨盒透视图；
图2现有喷墨打印机墨盒出墨口分解剖视图；
图3现有喷墨打印机墨盒出墨口装配状态局部剖视图；
图4本发明喷墨打印机墨盒出墨口分解剖视图；
图5本发明喷墨打印机墨盒出墨口局部剖视图；
图6本发明喷墨打印机墨盒所用密封圈透视图；
图7本发明喷墨打印机墨盒出墨口装配状态局部剖视图。
 本发明的实施方式
下面结合附图详细描述本发明墨打印机墨盒。
参见图4～7，结合图1，分别示出本发明喷墨打印机墨盒的透视图及其出墨口剖视图、密封圈透视图。
本发明墨盒100由盒盖101、盒体102和墨囊103构成。墨囊103盛满墨水后被放置于由盒盖101、盒体102共同封闭后形成的盒腔104中，墨囊103上设置的出墨口105裸置于盒体102的一个较小的侧壁上。在出墨口105中设置有阀门106，用来控制出墨口105的开启/关闭状态。阀门106由弹簧107、阀芯108和密封圈109构成。在装配状态下，弹簧107被压抵在出墨口105中，阀芯108的一端压接在弹簧107上而其带有密封板110的另一端压抵在密封圈109的轴向端壁上，密封圈109封堵在出墨口105的最外部并同出墨口105的内周面保持密封。密封圈109对出墨口105内周面的基本封堵形式为通过在其自身外周面上设置的更大直径的第一圆环111紧贴于出墨口105的内周面上的方式来实现。
在上述结构基础上，在出墨口105的内周面对应于第一圆环111的部位，设置有第一环槽112。第一圆环111扣置于第一环槽112中。在密封圈109的外周面上，另外增加设置一道沿密封圈109轴向同第一圆环111并列的第二圆环113。在出墨口105的内周面上，对应于密封圈109装配状态下第二圆环113在出墨口105中所处的位置，另外增加设置一道沿出墨口105轴向同第一环槽112并列的第二环槽114。在装配状态下，第二圆环113就扣置于第二环槽114内，为密封圈109额外提供再一重定位和密封作用。在密封圈109装配至出墨口105内的状态下，第一圆环111的位置沿出墨口105轴向靠近出墨口105的外侧。
在出墨口105的轴向外端面上，设置有四个扣位件115。四个扣位件115在出墨口105的轴向横截面上对称于出墨口105的轴向，即在出墨口105的轴向外端面上均布。扣位件115的一端固定在出墨口105的轴向外端面上，其一部分沿出墨口105的直径方向伸入出墨口105的管口，使得密封圈109在装配状态下被扣位件115扣接于出墨口105内，非经破坏性拆解不能从出墨口105中取出，为密封圈109再行提供一重定位效用，以防止弹簧107推顶阀芯108和密封圈109后，使密封圈109从出墨口105中退出或滑脱。
在出墨口105的内周面上，设置有其直径小于出墨口105内周面的收缩环116。沿着出墨口105的轴向，收缩环116的位置靠近分布在出墨口105外部的第一圆环111的外侧，即沿着出墨口105的轴向，收缩环116位于第一圆环111朝向出墨口105外部的一侧。在出墨口105的轴向横截面上，收缩环116的收缩程度以其表面能够压接于第一圆环111的表面为佳，即在图7中，收缩环116紧贴地位于第一圆环111的上方，对第一圆环111提供轴向的约束，为密封圈109又提供一重定位保障，以防止弹簧107推顶阀芯108和密封圈109后使密封圈109脱离出墨口105。
 工业实用性
本发明通过在出墨口的轴向外端面上设置扣位件，和/或在密封圈的外周面上额外增加设置一道同原有圆环并列的圆环，以及在出墨口内周面上设置收缩环的方式，可以通过扣位件把密封圈扣入出墨口内，有效防止密封圈从出墨口内脱出；可以通过增设的圆环加强密封圈同出墨口内周面的接触摩擦和密封性，可以通过收缩环对密封圈提供其滑出出墨口的防范门槛，并有效防止密封圈在出墨口内发生倾斜。在这些结构方式下，墨盒出墨口内的阀门可以保持稳定的结构状态，其密封圈将牢固地扣置于出墨口沿自身轴向的外端部而不会因弹簧的推力脱出至出墨口之外，从而对出墨口提供稳定而牢靠的密封作用。

Claims (4)

  1. 喷墨打印机墨盒，包括盒体、盒盖、墨囊，所述墨囊上设置有出墨口，所述出墨口裸露在所述盒体的侧壁之一上，所述出墨口中设置有阀门，所述阀门由弹簧、阀芯和密封圈构成，所述密封圈以其外周面上设置的第一圆环紧贴于所述出墨口内周面上的方式封闭所述出墨口；
    其特征在于：
    所述出墨口的轴向外端面上设置有把所述密封圈扣入所述出墨口内的扣位件。
  2. 如权利要求1所述喷墨打印机墨盒，其特征在于：
    所述扣位件为四个并对称于所述出墨口的轴向。
  3. 如权利要求1或2所述喷墨打印机墨盒，其特征在于：
    所述出墨口内周面对应于所述第一圆环的部位设置有第一环槽，所述第一圆环扣置于所述第一环槽中；
    所述密封圈的外周面上另外设置有同所述第一圆环并列的第二圆环，所述第二圆环扣置于在所述出墨口内周面上另外增设的第二环槽中。
  4. 如权利要求3所述喷墨打印机墨盒，其特征在于：
    所述出墨口内周面上设置有直径小于所述出墨口内周面的收缩环，沿所述出墨口轴向，所述收缩环位于靠近所述出墨口外部的所述圆环的外侧，所述收缩环的表面压抵于靠近所述出墨口外部的所述圆环的表面。
PCT/CN2011/072494 2010-04-07 2011-04-07 喷墨打印机墨盒 WO2011124134A1 (zh)

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