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WO2015074533A1 - Appareil de protection pour paire écrou/vis à billes - Google Patents

Appareil de protection pour paire écrou/vis à billes Download PDF

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Publication number
WO2015074533A1
WO2015074533A1 PCT/CN2014/091384 CN2014091384W WO2015074533A1 WO 2015074533 A1 WO2015074533 A1 WO 2015074533A1 CN 2014091384 W CN2014091384 W CN 2014091384W WO 2015074533 A1 WO2015074533 A1 WO 2015074533A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw nut
strip
zipper
protection device
nut pair
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2014/091384
Other languages
English (en)
Chinese (zh)
Inventor
杨敏敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
Original Assignee
SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
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 SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd filed Critical SUZHOU ECOVACS COMMERCIAL ROBOT Co Ltd
Publication of WO2015074533A1 publication Critical patent/WO2015074533A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H25/2418—Screw seals, wipers, scrapers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls

Definitions

  • the invention relates to the technical field of machinery, in particular to a screw nut secondary protection device.
  • a lead screw nut consisting of a lead screw and a nut is a mechanical transmission with a wide range of applications, which converts rotary motion into linear motion with reliable operation and long service life.
  • the role of the screw nut pair is especially important.
  • the split robot drives the front and rear extension bodies alternately by the screw nut pair to realize the walking of the entire robot on the working surface.
  • there are some problems in the use of the screw nut pair for example, during the alternate walking of the front and rear extension bodies of the robot (this process is accompanied by the separation and closing of the front and rear extension bodies), and the lead screw is exposed. On the outside, it is easily polluted by harmful substances such as dust in the air.
  • the screw nut pair After a long time of work, a large amount of dust accumulates in the screw thread nest, increasing the friction between the screw and the nut, reducing work efficiency, and even affecting the machine in severe cases. Normal use.
  • the screw nut pair usually drives the external member along the axial direction of the screw through the connecting member on the nut to realize the corresponding function, which makes it difficult to be completely fixed and sealed in a sealed state. In the space, the protection of the screw nut pair is inconvenient.
  • a screw nut auxiliary protection device includes a fixed seal and a dynamic seal, wherein the fixed seal has an opening on one side thereof, and an accommodation space for accommodating the screw nut pair in the opening, the dynamic seal and the
  • the open sealing connection of the fixed seal is further provided with a strip-shaped dynamic switch in the axial direction of the lead screw, the strip-shaped dynamic switch is only partially opened corresponding to the position of the nut, and the open position follows The nut moves.
  • the present invention can further add the following technical features in order to better or more specifically solve the technical problem to be solved by the present invention:
  • the strip dynamic switch is composed of two zipper heads and a zipper strip that cooperate with each other.
  • strip dynamic switch is composed of two parallel zipper strips and a zipper head structure. Active zipper composition.
  • the strip-shaped dynamic switch is composed of two pieces of mutually adsorbable elements, which are preferably rubber magnetic and velcro.
  • the fixed sealing member is made of a rigid material, such as a hard plastic, preferably polyethylene or polypropylene.
  • the working principle of the invention is: the screw nut pair is enclosed in the screw nut auxiliary protection device composed of the above fixed sealing member and the dynamic sealing member, and the nut is provided with a connecting member for driving the movement of the external member, and the connecting member is directly connected with
  • the strip-shaped dynamic switch on the dynamic seal contacts and, at the point where the two are in direct contact, the strip-shaped dynamic switch is open, which allows the connector to be connected to the exterior.
  • the strip-shaped dynamic switch In a normal state, the strip-shaped dynamic switch is in a closed state with the uncontacted portion of the connecting member; when the connecting member drives the external member along the axial direction of the lead screw with the nut - and is also a strip-shaped dynamic switch Extension direction - when sliding, the strip-shaped dynamic switch located at the front side portion of the sliding direction of the connecting member is partially opened, and the strip-shaped dynamic switch located at the rear side portion of the sliding direction of the connecting member is reclosed after the connecting member slides over, which makes The strip dynamic switch is generally closed except for the portion directly in contact with the connector.
  • the strip dynamic switch on the dynamic seal can be opened and closed in time, so that it does not hinder the movement of the screw nut pair and enables the wire
  • the bar nut pair is always sealed in a closed space during the work.
  • the invention has the following beneficial effects: (1) After the screw nut auxiliary protection device of the invention is used, the portion of the screw nut pair originally exposed to the outside of the machine is completely sealed in the sealed space, so the screw nut protection of the present invention is protected The device can effectively prevent the screw nut pair from being polluted by the outside. (2) The structure is simple and easy to implement.
  • FIG. 1 is a schematic side view showing the structure of a first embodiment of the present invention
  • FIG. 2 is a schematic plan view showing the planar structure of the dynamic seal in the first embodiment of the present invention
  • Figure 3 is a plan view showing the planar structure of the dynamic sealing member in another working state in the first embodiment of the present invention.
  • 4A is a schematic plan view showing the dynamic seal of the second embodiment of the present invention.
  • 4B is a schematic side view showing the dynamic seal of the second embodiment of the present invention.
  • 4C-4D are schematic diagrams showing the assembly relationship between the U-shaped movable zipper and the screw nut pair in the present invention.
  • Fig. 5 is a schematic plan view showing the dynamic seal of the third embodiment of the present invention.
  • a screw nut auxiliary protection device includes a fixed seal 1 and a dynamic seal 4 .
  • the fixed seal 1 has an opening on one side thereof and an accommodation space in the opening.
  • a screw nut pair formed by the nut 3 is placed in the accommodating space, and the dynamic seal 4 is sealingly connected to the opening of the fixed seal 1 to make the accommodating space a sealed space.
  • the dynamic seal 4 is further provided with a strip-shaped dynamic switch 401 along the axial direction of the lead screw 2, and the strip-shaped dynamic switch 401 is composed of two zipper heads 401a and zipper strips 401b that cooperate with each other.
  • the nut 3 is provided with a connecting member 5 for driving the movement of the external member.
  • the connecting member 5 is sandwiched between the zipper strips 401b, and both ends thereof are fixedly connected to one of the zipper heads 401a.
  • the zipper strip 401b at both ends of the zipper head 401a is in a closed state, and when the nut 3 drives the connecting member 5 to move along the axial direction of the screw rod 2, and also the extending direction of the zipper strip 401b, the connecting member
  • the moving direction of 5 is the forward direction, and the zipper head 401a on the front side of the connecting member 5 pushes the zipper strip 401b partially to provide a passage for the connecting member 5 to move forward.
  • the zipper head 401a on the rear side of the connecting member 5 Pull the zipper bar that is opened when the connector is opened, so that the screw nut pair is always in a confined space.
  • the present invention uses the technical solution of the second embodiment to solve this problem:
  • the U-shaped movable zipper 402 is formed as a strip-shaped dynamic switch by using two pairs of zipper strips and a zipper head structure arranged in parallel.
  • a zipper strip is disposed on each side of the connecting member 5, and a zipper head is disposed at each of the joints of the zipper strip and the connecting member.
  • the piece provides a moving space, and after the connecting piece is slid, the two zipper heads on the rear side of the connecting piece are respectively pulled together with the zipper strip provided with the matching, so that the screw nut pair is always in a sealed space.
  • the structure effectively solves the problem that the gap between the connecting member and the zipper head is large when the connecting member is large, and the sealing property of the protection device is improved.
  • the strip-shaped dynamic switch of the present invention can also achieve the object of the invention for protecting the lead screw nut pair using a rubber magnetic structure.
  • the connecting member 5 is disposed between two pieces of rubber magnetic 403.
  • the two pieces of rubber magnetic 403 are in a suction state by the action of suction, and are located at the connecting piece when the connecting member 5 is swiped.
  • the rubber magnet at the front end of the sliding direction is opened by the connecting member, and after the connecting member is slid, the rubber magnets on both sides of the rear end of the sliding direction of the connecting member 5 are re-engaged under the self-suction force, so that the screw nut pair is always in a closed space.
  • the strip dynamic switch is not limited to the rubber magnetic structure, and the object of the present invention can be achieved by using magnetically equivalent elements such as velcro and the like, and it is of course to fall into the present invention. protected range.
  • the fixed sealing member 1 is preferably made of a hard plastic such as polyethylene or polypropylene.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

L'invention concerne un appareil de protection pour une paire écrou/vis à billes comprenant une pièce d'étanchéité fixe (1) et une pièce d'étanchéité mobile (4). Une ouverture est disposée au niveau d'une surface de la pièce d'étanchéité fixe (1). Un espace de logement permettant de loger une paire écrou/vis à villes est fourni dans l'ouverture. La pièce d'étanchéité mobile (4) et l'ouverture de la pièce d'étanchéité fixe (1) sont raccordées d'une manière étanche. Un commutateur de déplacement de bande (401) est en outre disposé au niveau de la pièce d'étanchéité mobile (4) le long d'une direction axiale de la vis à billes (2). Lorsqu'un écrou (3) scellé dans l'appareil de protection de paire écrou/vis à billes se déplace le long d'une direction axiale de la vis à billes (2), le commutateur de déplacement de bande (401) peut être activé au moyen d'un élément tel qu'une pièce de raccordement (5) de manière à entraîner un moyen externe en mouvement. L'appareil peut protéger efficacement une paire écrou/vis à billes de la pollution externe, présente une structure simple et est facile à mettre en œuvre.
PCT/CN2014/091384 2013-11-20 2014-11-18 Appareil de protection pour paire écrou/vis à billes Ceased WO2015074533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310585951.5 2013-11-20
CN201310585951.5A CN104653737B (zh) 2013-11-20 2013-11-20 丝杠螺母副保护装置

Publications (1)

Publication Number Publication Date
WO2015074533A1 true WO2015074533A1 (fr) 2015-05-28

Family

ID=53178938

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/091384 Ceased WO2015074533A1 (fr) 2013-11-20 2014-11-18 Appareil de protection pour paire écrou/vis à billes

Country Status (2)

Country Link
CN (1) CN104653737B (fr)
WO (1) WO2015074533A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118063075A (zh) * 2024-04-18 2024-05-24 天津松山环保科技有限公司 一种污泥烘干装置
EP4414575A4 (fr) * 2021-10-05 2025-02-19 Nippon Thompson Co., Ltd. Unité à mouvement linéaire

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108393932B (zh) * 2018-04-28 2024-01-30 沈阳众拓机器人设备有限公司 涡轮盘水浸系统配套设备
CN108381526B (zh) * 2018-04-28 2023-12-12 沈阳众拓机器人设备有限公司 一种机器人运动单元
CN109278033B (zh) * 2018-10-22 2024-08-20 亿嘉和科技股份有限公司 一种抗逆向冲击的正反向回转增力机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322540A1 (de) * 1992-07-10 1994-01-13 Magnetic Elektromotoren Gmbh Kugelgewindetrieb
CN2259484Y (zh) * 1995-09-19 1997-08-13 长庆石油勘探局钻采工艺研究院 多功能投球装置
CN201090699Y (zh) * 2007-07-27 2008-07-23 北京石油化工学院 丝杠防尘装置
CN201880731U (zh) * 2010-10-14 2011-06-29 河北文丰钢铁有限公司 一种带钢粗轧压下丝杠伸缩式防尘罩
CN102713354A (zh) * 2010-01-15 2012-10-03 Thk株式会社 设置有防尘机构的线性致动器
CN203614688U (zh) * 2013-11-20 2014-05-28 苏州科沃斯商用机器人有限公司 丝杠螺母副保护装置

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DE667061C (de) * 1935-11-03 1938-11-03 Rheinmetall Borsig Akt Ges Reissverschluss mit mehreren Schiebern
JP4862273B2 (ja) * 2005-04-18 2012-01-25 日本精工株式会社 移送装置
CN201270847Y (zh) * 2008-07-24 2009-07-15 涂朝杰 防水密封拉链
CN201596933U (zh) * 2009-11-17 2010-10-06 北京天瑞中海精密仪器有限公司 平移机构的防尘装置
CN201851507U (zh) * 2010-07-27 2011-06-01 大连高金数控集团有限公司 滚动直线导轨副密封结构
CN201973100U (zh) * 2011-04-12 2011-09-14 苏州通锦精密工业有限公司 直线运动模组

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322540A1 (de) * 1992-07-10 1994-01-13 Magnetic Elektromotoren Gmbh Kugelgewindetrieb
CN2259484Y (zh) * 1995-09-19 1997-08-13 长庆石油勘探局钻采工艺研究院 多功能投球装置
CN201090699Y (zh) * 2007-07-27 2008-07-23 北京石油化工学院 丝杠防尘装置
CN102713354A (zh) * 2010-01-15 2012-10-03 Thk株式会社 设置有防尘机构的线性致动器
CN201880731U (zh) * 2010-10-14 2011-06-29 河北文丰钢铁有限公司 一种带钢粗轧压下丝杠伸缩式防尘罩
CN203614688U (zh) * 2013-11-20 2014-05-28 苏州科沃斯商用机器人有限公司 丝杠螺母副保护装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4414575A4 (fr) * 2021-10-05 2025-02-19 Nippon Thompson Co., Ltd. Unité à mouvement linéaire
CN118063075A (zh) * 2024-04-18 2024-05-24 天津松山环保科技有限公司 一种污泥烘干装置
CN118063075B (zh) * 2024-04-18 2024-07-02 天津松山环保科技有限公司 一种污泥烘干装置

Also Published As

Publication number Publication date
CN104653737B (zh) 2020-08-14
CN104653737A (zh) 2015-05-27

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