WO2018035975A1 - 热敏打印机芯胶辊轴与主支架开口轴承的配合结构 - Google Patents

热敏打印机芯胶辊轴与主支架开口轴承的配合结构 Download PDF

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Publication number
WO2018035975A1
WO2018035975A1 PCT/CN2016/104845 CN2016104845W WO2018035975A1 WO 2018035975 A1 WO2018035975 A1 WO 2018035975A1 CN 2016104845 W CN2016104845 W CN 2016104845W WO 2018035975 A1 WO2018035975 A1 WO 2018035975A1
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WO
WIPO (PCT)
Prior art keywords
main bracket
bearing
roller shaft
linear bearing
open linear
Prior art date
Application number
PCT/CN2016/104845
Other languages
English (en)
French (fr)
Inventor
钮李明
Original Assignee
厦门顶尖电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门顶尖电子有限公司 filed Critical 厦门顶尖电子有限公司
Publication of WO2018035975A1 publication Critical patent/WO2018035975A1/zh

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Classifications

    • 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
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads

Definitions

  • the invention relates to a thermal printer, in particular to a matching structure of a thermal printer core roller shaft and a main bracket opening bearing.
  • thermal printer cores There are two main types of thermal printer cores on the market for low-cost, easy-to-load paper structures:
  • the first is the chute positioning mode, as shown in Figure 1.
  • the print head piece j presses the rubber roller shaft i against the chute positioning structure in the chute of the main bracket h.
  • the disadvantage of this method is that a large pressing force is required when the rubber roller shaft enters the printing state, and the pressing stroke is large and the service life is unfavorable.
  • the positioning method of the compression spring is shown in Figure 2.
  • the print head piece d and the pressure wire spring c press the rubber roller shaft b against the compression spring positioning structure in the 'u' groove a1 of the main bracket a.
  • This structural disadvantage is that the pressure wire spring c is required to prevent the rubber roller shaft b from being disengaged from the 'u'-shaped groove a1 of the main bracket a. Since the wire spring is bent and formed, the elastic force is often unstable due to the material and the bending angle being inaccurate.
  • the pressure is insufficient to cause the rubber roller shaft to eject or the pressure is too large, so that the rubber roller shaft pull-out force and the loading force are too
  • the pressure wire spring and the main bracket adopt an assembled structure, so there is also a problem that the mechanism is cumbersome and the assembly process is complicated.
  • the object of the present invention is to provide a matching structure of a thermal printer core roller shaft and a main bracket opening bearing, which is simple and stable in cooperation with the main bracket and fast and convenient to withdraw from the main frame.
  • the solution of the present invention is:
  • a matching structure of a thermal printer core roller shaft and a main bracket open bearing wherein the main bracket is provided with an open bearing for the rubber roller shaft, wherein the bearing is an open bearing, and the opening is smaller in size than the open bearing
  • the diameter is adapted to the outer diameter of the rubber roller shaft, and the opening of the open bearing is provided with a plastic elastic arm with a pointed point on the direction side of the printing head piece.
  • the opening of the open bearing is smaller in size than the bearing diameter.
  • the stylus-shaped plastic elastic arm has a cusp point in the central portion of the elastic arm and the length of the elastic arm is in the range of 40%-120% of the diameter of the open bearing.
  • the present invention provides a plastic elastic arm with a pointed point at the opening of the open bearing of the main bracket.
  • Figure 1 is a schematic diagram of a conventional chute positioning method
  • Figure 2 is a schematic view of a conventional compression spring positioning method
  • Figure 3 is a perspective view showing the state in which the rubber roller shaft of the present invention does not enter the main bracket opening bearing;
  • Figure 4 is a side view showing the state in which the rubber roller shaft of the present invention does not enter the main bracket opening bearing;
  • Figure 5 is a side view showing the state in which the rubber roller shaft of the present invention has entered the main bracket opening bearing
  • Figure 6 is a perspective view showing the state in which the rubber roller shaft of the present invention has entered the main bearing opening bearing
  • Fig. 6A is a partial enlarged view of Fig. 6.
  • the present invention discloses a matching structure of a thermal printer core roller shaft and a main bracket opening bearing, and the main bracket 1 is provided with an open bearing 11 for the rubber roller shaft 2 to match The rubber roller 3 is mated with the print head sheet 4;
  • the main bracket is provided with an open bearing for the rubber roller shaft, wherein the bearing is an open bearing 11 whose opening size is smaller than the diameter of the open bearing 11 and the diameter and the outer diameter of the rubber roller shaft 2
  • the opening of the open bearing 11 is provided with a plastic elastic arm 13 with a pointed point 12 on the direction side of the print head piece 4.
  • the sharp point is located in the central portion of the elastic arm of the plastic elastic arm 13, and the length of the elastic arm is an opening.
  • the plastic elastic arm 13 has a relief through hole 14 on the side of the print head piece 4 in the range of 40% to 120% of the diameter of the bearing 11.
  • the escaping through hole 14 functions to make the plastic elastic arm 13 elastic and has a escaping space when deformed
  • the other side of the plastic elastic arm 14 is provided with a cusp 12, that is, a narrow point of the open bearing, and the narrow point width of the cusp is smaller than the outer diameter of the rubber roller shaft 2.
  • the present invention provides a plastic elastic arm 13 with a pointed point 12 at the opening bearing 11 of the main bracket 1 and a relief hole 14 provided on the side of the side of the print head piece 4 to open the bearing.
  • the upper side wall of the 11 forms a plastic elastic arm 13 , and the elastic deformation capability of the plastic elastic arm 13 of the open bearing 11 makes the rubber roller shaft 2 and the open bearing 11 of the main bracket 1 simple and stable, and the main frame 1 Exit is also quick and convenient.
  • the plastic elastic arm 13 with the pointed point 12 is integrated with the main bracket 1, and no additional wire spring is needed to locate the bearing relationship.
  • the structure of the whole organization is simple, and the manufacturing cost is effectively reduced.

Landscapes

  • Handling Of Sheets (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

公开了一种热敏打印机芯胶辊轴与主支架开口轴承的配合结构，其中主支架1设有与胶辊轴（2）配合的开口轴承（11），开口轴承开口处之尺寸小于开口轴承之直径，该直径与胶辊轴的外径适配，开口轴承之开口处设有带尖点（12）的塑胶弹性臂（13），塑胶弹性臂与主支架是一体结构，使得整体结构简单。塑胶弹性臂的弹性变形能力使得胶辊轴与主支架开口轴承的配合简单稳固，胶辊轴退出开口轴承亦快捷便利。

Description

热敏打印机芯胶辊轴与主支架开口轴承的配合结构 技术领域
本发明涉及一种热敏打印机，特别是指一种热敏打印机芯胶辊轴与主支架开口轴承的配合结构。
背景技术
市场上目前的低成本易装纸结构的热敏打印机芯主要有两种：
一是滑槽定位方式，如图1所示。打印头片j将胶辊轴i压在主支架h的滑槽内的滑槽定位结构。此方式缺点为在胶辊轴进入打印状态时需要较大的压入力量，且压入行程大不利使用寿命。
二是压簧定位方式如图2所示。打印头片d、压力线簧c将胶辊轴b压在主支架a的'u'型槽a1内的压簧定位结构。此结构缺点是需要借助压力线簧c才能防止胶辊轴b从主支架a的'u'型槽a1内脱开。由于此线簧是折弯成型，常会因材质、折弯角度不准等造成弹力不稳定的缺点，故常见有压力不足造成胶辊轴弹出或压力太大造成胶辊轴拔出力和装入力太大之不良；另外压力线簧与主支架采用的是组装结构，因此亦存在机构繁琐、组装工序复杂的问题。
发明内容
本发明的目的是提供一种胶辊与主支架配合简单稳固而与支主架退出又快捷便利的热敏打印机芯胶辊轴与主支架开口轴承的配合结构。
为实现上述目的，本发明的解决方案是：
一种热敏打印机芯胶辊轴与主支架开口轴承的配合结构，所述的主支架设有供胶辊轴配合的开口轴承，其中此轴承是一个开口轴承，其开口处之尺寸小于开口轴承之直径，该直径与胶辊轴的外径适配，该开口轴承之开口处在打印头片之方向侧设有带尖点的塑胶弹性臂。
所述的开口轴承的开口处尺寸小于轴承直径。
所述带尖点的塑胶弹性臂，尖点在弹性臂中央区弹性臂长度为开口轴承直径的40%-120%范围。
采用上述方案后，本发明通过在主支架的开口轴承之开口处设有带尖点的塑胶弹性臂。利用此塑胶弹性臂的弹性变形能力，令胶辊轴与主支架的配合简单稳固，而与支主架的退出亦快捷便利；同时此带尖点的塑胶弹性臂与主支架是一体的结构，无需另设线弹簧，令整个机构的结构简单，有效降低制造成本。
附图说明
图1是传统滑槽定位方式简图；
图2是传统压簧定位方式简图；
图3是本发明胶辊轴未进入主支架开口轴承状态的立体示意图；
图4是本发明胶辊轴未进入主支架开口轴承状态的侧视图；
图5是本发明胶辊轴已进入主支架开口轴承状态的侧视图；
图6是本发明胶辊轴已进入主支架开口轴承状态的立体示意图；
图6A是图6的局部放大图。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详述。
如图3至图6A所示，本发明揭示了一种热敏打印机芯胶辊轴与主支架开口轴承的配合结构，所述主支架1设有供胶辊轴2配合的开口轴承11，以令胶辊3与打印头片4配合在一起；
本发明的关键在于：所述的主支架设有供胶辊轴配合的开口轴承，其中轴承是一个开口轴承11，其开口尺寸小于开口轴承11之直径，该直径与胶辊轴2的外径适配，该开口轴承11之开口处在打印头片4之方向侧设有带尖点12的塑胶弹性臂13，此尖点位于塑胶弹性臂13的弹性臂中央区，此弹性臂长度为开口轴承11直径的40%-120%范围，此塑胶弹性臂13在打印头片4方向之侧有避让通孔14。
此避让通孔14作用是令塑胶弹性臂13具有弹性且有变形时的避让空间；
此塑胶弹性臂14另一侧设有尖点12，也就是开口轴承的尖点窄口，此尖点窄口宽度尺寸小于胶辊轴2外径尺寸。
配合各图所示，当胶辊轴2与开口轴承11配合时，胶辊轴2在通过尖点窄口时，此胶辊轴2会挤压带尖点12的塑胶弹性臂13，使之变形让胶辊轴2顺利通过该尖点窄口进入开口轴承11，同时此塑胶弹性臂13又回弹原位锁定胶辊轴2并保持开口轴承11的原形状，以利轴与轴承的旋转顺畅。反之，当从开口轴承11中退出胶辊轴2时，反向上述动作，加一定的力值即可挤压带尖点12的塑胶弹性臂13，使其变形让胶辊轴2退出主支架1的开口轴承11。
综上所述，本发明通过在主支架1的开口轴承11处设置带尖点12的塑胶弹性臂13，并配合在其打印头片4方向之侧一边设置避让通孔14，以令开口轴承11的上侧壁形成塑胶弹性臂13，利用此开口轴承11的塑胶弹性臂13的弹性变形能力，令胶辊轴2与主支架1的开口轴承11配合简单稳固，而与支主架1的退出亦快捷便利。同时此带尖点12的塑胶弹性臂13与主支架1为一体结构，无需另设线弹簧来定位轴承关系。令整个机构的结构简单，有效降低制造成本。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故但凡依本发明的权利要求和说明书所做的变化或修饰，皆应属于本发明专利涵盖的范围之内。

Claims (3)

1、一种热敏打印机芯胶辊轴与主支架开口轴承的配合结构，所述的主支架设有供胶辊轴配合的开口轴承，其特征在于：此轴承是一个开口轴承，其开口处之尺寸小于开口轴承之直径，该直径与胶辊轴的外径适配，该开口轴承之开口处在打印头片之方向侧设有带尖点的塑胶弹性臂。
2、如权利要求1所述的热敏打印机芯胶辊轴与主支架开口轴承的配合结构，其特征在于：所述的开口轴承的开口处尺寸小于轴承直径。
3、如权利要求1所述的热敏打印机芯胶辊轴与主支架开口轴承的配合结构，其特征在于：所述带尖点的塑胶弹性臂，尖点在弹性臂中央区弹性臂长度为开口轴承直径的40%-120%范围。
PCT/CN2016/104845 2016-08-22 2016-11-07 热敏打印机芯胶辊轴与主支架开口轴承的配合结构 WO2018035975A1 (zh)

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Publication number Priority date Publication date Assignee Title
EP0741017A2 (de) * 1995-05-04 1996-11-06 WindmÀ¶ller & Hölscher Halterung für auf Wellenzapfen aufgesetzte Lager
CN201067987Y (zh) * 2007-08-28 2008-06-04 林宣喜 一种印刷机的胶辊轴支架
CN103538373A (zh) * 2013-11-04 2014-01-29 宁波精芯科技有限公司 打印头组件安装结构及应用有该结构的热敏打印机芯
CN203727007U (zh) * 2014-01-08 2014-07-23 广州广电运通金融电子股份有限公司 一种打印机卷纸安装机构
CN205970403U (zh) * 2016-08-22 2017-02-22 厦门顶尖电子有限公司 热敏打印机芯胶辊轴与主支架开口轴承的配合结构

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