WO2017005030A1 - 一种顶杆自动对轴同心装置 - Google Patents

一种顶杆自动对轴同心装置 Download PDF

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Publication number
WO2017005030A1
WO2017005030A1 PCT/CN2016/079339 CN2016079339W WO2017005030A1 WO 2017005030 A1 WO2017005030 A1 WO 2017005030A1 CN 2016079339 W CN2016079339 W CN 2016079339W WO 2017005030 A1 WO2017005030 A1 WO 2017005030A1
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WO
WIPO (PCT)
Prior art keywords
ejector rod
ejector
associated structure
automatic alignment
spherical
Prior art date
Application number
PCT/CN2016/079339
Other languages
English (en)
French (fr)
Inventor
张新建
马颖丹
Original Assignee
北京谊安医疗系统股份有限公司
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 北京谊安医疗系统股份有限公司 filed Critical 北京谊安医疗系统股份有限公司
Publication of WO2017005030A1 publication Critical patent/WO2017005030A1/zh

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction

Definitions

  • the present invention relates to the field of ventilators and mechanical devices, and in particular to a ram-type automatic counter-axis concentric device.
  • a device that uses the ejector or thimble telescopic motion to control the opening or stroke of its associated structure is often used in ventilators or mechanical transmissions where the ram or thimble acts directly on one side of its associated structure. In this case, it is required that the ejector pin or the ejector pin and the ejector pin are better in alignment, and the top yoke cannot be turned over.
  • one end of the ejector pin 3 deep into the guiding hole is formed into a spherical surface or rounded along the circumference, and the acting surface of the associated structure 1 is a plane in the cavity.
  • the coaxiality of the in-vivo associated structure 1 and the ram 3 is controlled by the spring 4, and one end of the inner ring of the spring 4 is sleeved on one circular surface of the associated structure 1, and the other end is sleeved on a circular surface of the ejector guide 2 , in this alignment.
  • Such a device structure does not actually solve the alignment problem between the ejector pin and the action surface, and only ensures the coaxiality of the associated structure and the ram guide seat to a certain extent, and the ejector pin and the guide seat are relatively moved.
  • the fit is a clearance fit, which may be skewed during the movement, which may cause the ejector to be biased to the associated structural action surface and control deviation occurs.
  • the present invention is directed to the above structural defects, and improves the structure of the device, and provides an automatic aligning device for the ejector pin.
  • the ejector automatic counter-axis concentric device of the present invention comprises a ram 3 and an associated structure 1 controlled by its opening or stroke, wherein a step is formed on the active surface of the associated structure 1 and the ram 3
  • the spherical opening groove 5 is engaged with the spherical surface at one end of the ejector pin 3.
  • the spherical groove 5 and the spherical surface at one end of the ram 3 are mutually cooperating with each other.
  • the associated structure 1 can be a stroke switch type structure.
  • the invention designs a step and a spherical groove at the center of the active surface of the associated structure, and the size thereof is matched with the front end of the ejector pin.
  • the ejector When the ejector is in contact with the active surface of the associated structure, the ejector can fall into the spherical groove, and the device of the present invention Since the ejector and the associated structure are always in contact, the spring is more than one. The remaining parts can be omitted.
  • the centering method provided by the invention directly aligns the action surface of the ejector and the associated structure, thus directly ensuring the coaxiality of the two parts, and does not require a spring to indirectly center, which simplifies the assembly process of the production line.
  • FIG. 1 is a schematic view of a centering device of a conventional ejector and its associated structure.
  • FIG. 2 is a schematic view of the self-aligning device of the ejector pin of the present invention.
  • the ejector automatic counter-axis concentric device of the present invention comprises a ram 3 and an associated structure 1 controlled by its opening or stroke, wherein the associated structure 1 interacts with the ejector 3
  • a step is set and the spherical surface of the spherical opening groove 5 and the end of the ejector pin 3 cooperate with the center of the ball.
  • a stepped spherical groove is designed at the center of the active surface of the associated structure, and its size is matched with the front end of the ejector pin.
  • the ejector When the ejector is in contact with the active surface of the associated structure, it can fall into the spherical groove.
  • the contact surface of the associated structure is always in contact, so no springs are required for centering.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Automatic Assembly (AREA)
  • Manufacture Of Switches (AREA)

Abstract

一种顶杆自动对轴同心装置。该顶杆自动对轴同心装置包括顶杆（3）和受其控制开度或行程的关联结构（1），其中，在所述关联结构（1）与顶杆（3）相互作用的作用面上，设置一台阶并开球面槽（5）与顶杆（3）一端的球面相配合。该顶杆自动对轴同心装置提供的一种对中方式让顶杆（3）和关联结构（1）的作用面直接对中，直接保证了两个零件的同轴度，不需要弹簧来间接对中，简化了生产线装配过程。

Description

一种顶杆自动对轴同心装置 技术领域
本发明涉及呼吸机及机械设备领域，具体地，涉及一种顶杆自动对轴同心装置。
背景技术
呼吸机或机械传动中经常会用到一种利用顶杆或顶针伸缩运动来控制与其关联结构的开度或行程的装置，这种装置中顶杆或顶针直接作用于其关联结构的某个面上，这就要求顶杆或顶针与作用面的对中性要好，不能顶偏不能顶翻。
目前此种装置多为图1所示，为方便装配顶杆3，顶杆3深入导向孔的一端被做成球面或沿圆周倒圆角，其关联结构1的作用面为一平面，在腔体内关联结构1与顶杆3的同轴度靠弹簧4来控制，由弹簧4的内圈一端套在关联结构1的一个圆面上，另一端套在顶杆导向座2的一个圆面上，以此对中。这样的装置结构实际上并未解决顶杆和作用面的对中问题，只在一定程度上保证了关联结构与顶杆导向座的同轴度，而顶杆与导向座由于要做相对运动，其配合为间隙配合，运动过程中可能会偏斜，这就导致顶杆可能顶偏关联结构作用面，出现控制偏差。
发明内容
本发明针对以上的结构缺陷，对这种装置结构进行改进，提供了一种顶杆自动对轴同心装置。
本发明的顶杆自动对轴同心装置，包括顶杆3和受其控制开度或行程的关联结构1，其中，所述关联结构1与顶杆3相作用的作用面上，设置一台阶并开球面槽5与顶杆3一端的球面相配合。
根据本发明的顶杆自动对轴同心装置，优选地，所述球面槽5与顶杆3一端的球面二者同球心相互配合。
根据本发明的顶杆自动对轴同心装置，所述关联结构1可以为行程开关类结构。
本发明在关联结构的作用面的中心设计一个台阶并开球面槽，其尺寸与顶杆前端配合，装配时顶杆与关联结构的作用面接触即可落入球面槽，对于本发明的该装置，由于顶杆与关联结构的作用面始终保持接触，因此弹簧此时就是一个多 余零件，可以省略。
本发明提供的一种对中方式让顶杆和关联结构的作用面直接对中，这样就直接保证了两个零件的同轴度，不需要弹簧来间接对中，简化了生产线装配过程。
附图说明
图1是现有的顶杆与其关联结构的对心装置示意图。
图2是本发明的顶杆自动对轴同心装置示意图。
附图标记
1、关联结构  2、顶杆导向座  3、顶杆  4、调整杆
5、球面槽
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
如图2所示，本发明的顶杆自动对轴同心装置，包括顶杆3和受其控制开度或行程的关联结构1，其中，所述关联结构1与顶杆3相作用的作用面上，设置一台阶并开球面槽5与顶杆3一端的球面二者同球心相互配合。
在关联结构的作用面的中心设计台阶开球面槽，其尺寸与顶杆前端配合，装配时顶杆与关联结构的作用面接触即可落入球面槽，对于本发明的该装置，由于顶杆与关联结构的作用面始终保持接触，因此，无需弹簧加以对中。
当然，本发明还可以有多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可根据本发明的公开做出各种相应的改变和变型，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (3)

  1. 一种顶杆自动对轴同心装置，包括顶杆(3)和受其控制开度或行程的关联结构(1)，其特征在于，在所述关联结构(1)与顶杆(3)相互作用的作用面上，设置一台阶并开球面槽(5)与顶杆(3)一端的球面相配合。
  2. 根据权利要求1所述的顶杆自动对轴同心装置，其特征在于，所述球面槽(5)与顶杆(3)一端的球面同球心配合。
  3. 根据权利要求1所述的顶杆自动对轴同心装置，其特征在于，所述关联结构(1)为行程开关。
PCT/CN2016/079339 2015-07-06 2016-04-15 一种顶杆自动对轴同心装置 WO2017005030A1 (zh)

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CN201520481349.1U CN204832963U (zh) 2015-07-06 2015-07-06 一种顶杆自动对轴同心装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204832963U (zh) * 2015-07-06 2015-12-02 北京谊安医疗系统股份有限公司 一种顶杆自动对轴同心装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186477B1 (en) * 1999-05-05 2001-02-13 Airsep Corporation Gas by-pass valve
CN101177835A (zh) * 2007-12-10 2008-05-14 孙嘉良 经编机梳栉装置
JP4432007B2 (ja) * 1999-11-10 2010-03-17 株式会社ニッキ 二種流体の流量調節弁装置
CN103055401A (zh) * 2011-10-19 2013-04-24 北京谊安医疗系统股份有限公司 呼吸机及比例阀
CN203090170U (zh) * 2012-10-15 2013-07-31 南京蓝泰医疗器械有限公司 一种用于医疗器械的安全阀
CN204832963U (zh) * 2015-07-06 2015-12-02 北京谊安医疗系统股份有限公司 一种顶杆自动对轴同心装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186477B1 (en) * 1999-05-05 2001-02-13 Airsep Corporation Gas by-pass valve
JP4432007B2 (ja) * 1999-11-10 2010-03-17 株式会社ニッキ 二種流体の流量調節弁装置
CN101177835A (zh) * 2007-12-10 2008-05-14 孙嘉良 经编机梳栉装置
CN103055401A (zh) * 2011-10-19 2013-04-24 北京谊安医疗系统股份有限公司 呼吸机及比例阀
CN203090170U (zh) * 2012-10-15 2013-07-31 南京蓝泰医疗器械有限公司 一种用于医疗器械的安全阀
CN204832963U (zh) * 2015-07-06 2015-12-02 北京谊安医疗系统股份有限公司 一种顶杆自动对轴同心装置

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