WO2017206224A1 - Palier miniature haute vitesse spécifiquement destiné à une utilisation dans une pièce à main dentaire - Google Patents

Palier miniature haute vitesse spécifiquement destiné à une utilisation dans une pièce à main dentaire Download PDF

Info

Publication number
WO2017206224A1
WO2017206224A1 PCT/CN2016/087012 CN2016087012W WO2017206224A1 WO 2017206224 A1 WO2017206224 A1 WO 2017206224A1 CN 2016087012 W CN2016087012 W CN 2016087012W WO 2017206224 A1 WO2017206224 A1 WO 2017206224A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
dental handpiece
ring
sleeve
dental
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/CN2016/087012
Other languages
English (en)
Chinese (zh)
Inventor
周展力
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.)
Ningbo Hpdove Dental Instruments Co Ltd
Original Assignee
Ningbo Hpdove Dental Instruments 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 Ningbo Hpdove Dental Instruments Co Ltd filed Critical Ningbo Hpdove Dental Instruments Co Ltd
Publication of WO2017206224A1 publication Critical patent/WO2017206224A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings

Definitions

  • the invention relates to a bearing on a dental handpiece.
  • the small size of the dental handpiece is the most difficult to manufacture in the middle of the bearing.
  • the precision of manufacturing the miniature bearing is high, and the difficulty of the process greatly affects the overall production cost of the dental handpiece.
  • Flange bearings have a good mounting and fixing effect, however, the micro-flange bearing machining process is more complicated than the micro-bearing machining.
  • China's patent library discloses a number of flange bearing processing methods, such as the publication number "101219522", the invention name is "a flange bearing outer circle and end face grinding processing method" mentioned in the "flange bearing outer ring”
  • the process steps such as the step-by-step step-by-step processing method are extremely complicated and complicated.
  • the gas will overflow from the bearing, and the lubricating material in the bearing will be removed during the overflow process, and the lubricating material will overflow to the oral cavity during use, causing damage to the human body;
  • the overflow of the lubricating material will cause the bearing to dry dry, and the bearing will be quickly lost, so that the bearing temperature will rise rapidly, which has a great impact on the efficiency of the use of the dental handpiece.
  • the bearing cap has high precision and is inconvenient to install, thus affecting the production rate efficiency.
  • the present invention provides a miniature high speed bearing dedicated to dental handpieces.
  • a miniature high-speed bearing dedicated to a dental handpiece comprising a bearing, the bearing is provided with a bearing sleeve, and the bearing sleeve comprises a wind blocking portion covering the upper end surface of the bearing, a through hole corresponding to the hole in the bearing is disposed in a middle portion of the choke portion;
  • the bearing comprises a bearing outer ring, a bearing inner ring and a ball
  • the inner wall of the bearing outer ring is provided with a ball groove
  • the outer wall of the bearing inner ring is provided with a ball groove
  • an annular cage is arranged, the cage is located between the inner ring of the bearing and the outer ring of the bearing, the upper end surface of the retainer is provided with a groove for accommodating the ball.
  • the cage is disposed on one side of the bearing, and the other side of the bearing is provided with a silicone grease ring.
  • the silicone grease ring is made of freeze-cured silicone grease, which is melted to form a gel-like lubricant after installation, making installation easier.
  • the choke portion extends horizontally to the side of the inner ring of the bearing, completely covering the inner ring of the bearing and the outer ring of the bearing The gap.
  • the complete coverage of the gap greatly enhances the insulating sealing effect to prevent the lubricant from overflowing and the small gap ensures the operation of the bearing.
  • a windshield is further disposed, the windshield is disposed on the other side of the bearing, and the windshield cooperates with the bearing sleeve to form an approximately closed space between the bearing inner ring and the bearing outer ring.
  • the double-sided sealing can effectively improve the direct impact of the internal pressure of the dental handpiece on the bearing, and further prevent the internal lubricating material from overflowing.
  • the air blocking sheet is a wind blocking bowl that is disposed on the other side of the bearing, and the wind blocking bowl cooperates with the bearing sleeve to wrap the bearing.
  • the bearing is almost completely blocked, greatly reducing the leakage of lubricating grease, improving the service life of the bearing and the rotation efficiency.
  • an O-ring is further disposed between the connecting portion and the extending portion of the bearing sleeve, and the connecting portion of the bearing sleeve and the arc of the extending portion are in close contact with the O-ring.
  • the sealing is strengthened, so that the interior of the dental handpiece is sealed, the internal airflow is prevented from leaking out, the internal airflow conversion efficiency is improved, and the internal airflow is operated more regularly.
  • the center of the O-ring is at the same level as the center of the bearing ball.
  • the center of the O-ring is at the same level as the center of the bearing ball, so that the bearing ball movement plane is consistent with the fixed plane, making the bearing more stable during operation.
  • the bearing sleeve is relatively offset, so that the bearing position is offset, and the wind-impeding portion and the connecting portion are connected by a circular arc, and the choke is blocked.
  • the arc is excessively applied to make the contact portion fit perfectly, and a gap is provided at the joint between the choke portion and the connecting portion to provide an expansion space of the bearing to prevent the bearing from being relatively offset.
  • the inner ring of the bearing, the outer ring of the bearing and the ball are assembled, and then the cage is mounted, and then the silicone grease ring is placed, the bearing sleeve is installed, and the O-ring is installed outside the bearing sleeve, and the windshield is selectively installed.
  • the invention has the beneficial effects that the bearing sleeve is used to form the flange bearing and the bearing sleeve structure is simple and can be directly made by stamping, the fixing effect and the running effect are excellent, the sealing effect of the bearing sleeve is excellent, and the lubricating substance is not obvious when used.
  • the overflow phenomenon, the bearing sleeve can smoothly alleviate the thermal expansion and contraction of the bearing during operation, so that the bearing runs stably inside the dental handpiece, on the other hand, the bearing wall thickness is increased, and the double-layer structure can play the effect of silencing and damping;
  • the invention greatly improves the use effect and safety and hygiene of the dental handpiece.
  • Figure 1 is a perspective view of the present invention.
  • Figure 2 is a cross-sectional view of the present invention.
  • Fig. 3 is a schematic view showing another structure of the wind block of the present invention.
  • a miniature high-speed bearing dedicated to a dental handpiece comprising a bearing, the bearing is provided with a bearing sleeve 1 , the bearing sleeve 1 comprising a wind blocking portion 2 covering an upper end surface of the bearing, a through hole corresponding to the hole in the bearing is disposed in a middle portion of the choke portion;
  • the bearing includes a bearing outer ring 5, a bearing inner ring 6, and a ball 7.
  • the inner wall of the bearing outer ring 5 is provided with a ball groove
  • the outer wall of the bearing inner ring 6 is provided with a ball groove, and further includes a ring shape.
  • the holder 8 is located between the bearing inner ring 5 and the bearing outer ring 6, and the upper end surface of the holder 8 is provided with a groove 9 for accommodating the balls 7.
  • the retainer 8 is disposed on one side of the bearing, and the other side of the bearing is provided with a silicone grease ring 10.
  • the silicone grease ring 10 is made of freeze-cured silicone grease, which is melted to form a gel-like lubricating material after installation, which makes the installation more convenient.
  • the choke portion 2 extends horizontally to the side of the bearing inner ring 6, completely covering the gap between the bearing inner ring 6 and the bearing outer ring 5.
  • the complete coverage of the gap greatly enhances the insulating sealing effect to prevent the lubricant from overflowing and the small gap ensures the operation of the bearing.
  • the air blocking sheet 11 is further included, and the air blocking sheet 11 is disposed on the other side of the bearing, and the air blocking sheet 11 is matched with the bearing sleeve 1 to form a bearing inner ring and the bearing outer ring. Approximately enclosed space.
  • the double-sided sealing can effectively improve the direct impact of the internal pressure of the dental handpiece on the bearing, and further prevent the internal lubricating material from overflowing.
  • the air blocking sheet 11 is a wind blocking bowl that is disposed on the other side of the bearing, and the wind blocking bowl and the bearing sleeve cooperate to wrap the bearing.
  • the bearing is almost completely blocked, greatly reducing the leakage of lubricating grease, improving the service life of the bearing and the rotation efficiency.
  • an O-ring 12 is further included, and the O-ring 12 is located between the connecting portion and the extension of the bearing sleeve, and the arc of the connecting portion and the extending portion of the bearing sleeve and the O-shape The circle fits snugly.
  • the sealing is strengthened, so that the interior of the dental handpiece is sealed, the internal airflow is prevented from leaking out, the internal airflow conversion efficiency is improved, and the internal airflow is operated more regularly.
  • the center of the O-ring 12 is located at the same level as the center of the bearing ball 7.
  • the center of the O-ring is at the same level as the center of the bearing ball, so that the bearing ball movement plane is consistent with the fixed plane, making the bearing more stable during operation.
  • the bearing sleeve in order to prevent the bearing from being thermally expanded during long-time high-speed operation, the bearing sleeve is relatively offset, so that the bearing position is offset, and the arc-breaking portion and the connecting portion are connected by a circular arc. Resist the wind department There is a gap between the joint of the joint and the bearing; the joint and the extension adopt a circular arc transition. The arc is excessively applied to make the contact portion fit perfectly, and a gap is provided at the joint between the choke portion and the connecting portion to provide an expansion space of the bearing to prevent the bearing from being relatively offset.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

La présente invention décrit un palier miniature haute vitesse spécifiquement destiné à une utilisation dans une pièce à main dentaire, comprenant un palier, où un manchon de palier (1) est prévu à l'extérieur du palier, le manchon de palier (1) comprenant une partie d'étranglement (2) recouvrant une face d'extrémité supérieure du palier, et un trou traversant correspondant à un trou sur le palier étant prévu dans une partie médiane de la partie d'étranglement (2) ; une partie de connexion (4) s'ajustant étroitement sur une face latérale du palier ; et une partie d'extension (3) qui est pliée vers l'extérieur et est utilisée pour la fixation sur une tête de machine de la pièce à main dentaire. La présente invention utilise le manchon de palier (1) pour former un palier de bride, et le manchon de palier (1) est de structure simple et peut directement être fabriqué par compression, et présente un bon effet de fixation et effet de fonctionnement. Le manchon de palier présente un bon effet d'étanchéité, sans phénomène de débordement évident d'une substance de graissage durant l'utilisation, et le manchon de palier peut atténuer l'expansion thermique et la contraction par le froid du palier durant le procédé de fonctionnement, de sorte que le palier peut fonctionner de manière stable à l'intérieur de la pièce à main dentaire, et par ailleurs, l'épaisseur de paroi du palier est accrue, et la structure double couche peut présenter des effets de silençage et d'amortissement, améliorant de là significativement l'effet d'utilisation et la sécurité et le degré d'hygiène de la pièce à main dentaire.
PCT/CN2016/087012 2016-06-03 2016-06-24 Palier miniature haute vitesse spécifiquement destiné à une utilisation dans une pièce à main dentaire Ceased WO2017206224A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610385485.XA CN105840649A (zh) 2016-06-03 2016-06-03 一种专用于牙科手机微型高速轴承
CN201610385485.X 2016-06-03

Publications (1)

Publication Number Publication Date
WO2017206224A1 true WO2017206224A1 (fr) 2017-12-07

Family

ID=56596128

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/087012 Ceased WO2017206224A1 (fr) 2016-06-03 2016-06-24 Palier miniature haute vitesse spécifiquement destiné à une utilisation dans une pièce à main dentaire

Country Status (2)

Country Link
CN (1) CN105840649A (fr)
WO (1) WO2017206224A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340263A (zh) * 2018-11-07 2019-02-15 慈兴集团有限公司 一种多重密封法兰轴承

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106344181A (zh) * 2016-10-09 2017-01-25 周展力 新型牙科手机机头
CN106763155B (zh) * 2016-12-30 2022-07-15 宁波和平鸽口腔医疗器材有限公司 微型高速无内圈滚珠轴承及其装配装置
CN108035970A (zh) * 2017-12-27 2018-05-15 浙江益齿星医疗器械有限公司 气动涡轮机专用无芯微型轴承
US12228717B2 (en) 2019-04-26 2025-02-18 Phaos Technology Pte. Ltd. Microsphere holder
CN111973291B (zh) * 2019-05-23 2024-11-19 宁波江北华盛医疗器械有限公司 牙科椅手持二孔手机冲头

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020110781A1 (en) * 2001-02-13 2002-08-15 Takasuke Nakanishi Dental handpiece with angular contact ball bearings
TWI230598B (en) * 2003-11-26 2005-04-11 Ind Tech Res Inst Anti-suction hand-held electric dental engine machine
CN105213042A (zh) * 2015-11-03 2016-01-06 桂林市啄木鸟医疗器械有限公司 一种增加挡件的牙科手机机芯

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2172366Y (zh) * 1993-08-11 1994-07-20 朱冠群 汽车转向节主销轴承及避震器轴承
DE4423222A1 (de) * 1994-07-01 1996-01-04 Kaltenbach & Voigt Ärztliches oder zahnärztliches Behandlungsinstrument
CN2691511Y (zh) * 2003-11-03 2005-04-13 郑平 高速空气涡轮牙钻手机
EP2727552B1 (fr) * 2012-11-05 2014-10-08 W & H Dentalwerk Bürmoos GmbH Pièce à main médicale, en particulier dentaire
CN105380718B (zh) * 2015-12-21 2018-04-24 咸阳西北医疗器械(集团)有限公司 用于牙科手机的防尘结构
CN206129875U (zh) * 2016-06-03 2017-04-26 宁波和平鸽口腔医疗器材有限公司 一种专用于牙科手机微型高速轴承

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020110781A1 (en) * 2001-02-13 2002-08-15 Takasuke Nakanishi Dental handpiece with angular contact ball bearings
TWI230598B (en) * 2003-11-26 2005-04-11 Ind Tech Res Inst Anti-suction hand-held electric dental engine machine
CN105213042A (zh) * 2015-11-03 2016-01-06 桂林市啄木鸟医疗器械有限公司 一种增加挡件的牙科手机机芯

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109340263A (zh) * 2018-11-07 2019-02-15 慈兴集团有限公司 一种多重密封法兰轴承

Also Published As

Publication number Publication date
CN105840649A (zh) 2016-08-10

Similar Documents

Publication Publication Date Title
CN105840649A (zh) 一种专用于牙科手机微型高速轴承
CN103748374A (zh) 密封式滚动轴承
CN101799037B (zh) 具冷却效果的转轴装置
JP2014190377A (ja) 軸受装置
US20090028475A1 (en) Fan with an anti-leakage device for an oily bearing
CN204371753U (zh) 散热风扇
CN206129875U (zh) 一种专用于牙科手机微型高速轴承
JP6283924B1 (ja) 電動機及びそれを用いたヒートシンク装置
CN211145129U (zh) 一种高转速下耐高温轴承
US8398307B2 (en) Bearing device
CN214788627U (zh) 一种迷宫密封结构
JP2009228793A (ja) 玉軸受用保持器およびその製造方法
CN216111041U (zh) 一种抗氧化效果好的汽车发动机端盖
JPH02143103U (fr)
JP2005299753A (ja) 鉄道車両車軸用軸受の密封装置
CN208433842U (zh) 一种气阻式氢冷发电机内油挡
CN211442703U (zh) 一种水域救援头盔
CN206802298U (zh) 密封结构及具有该密封结构的轴承
CN204304678U (zh) 一种含油轴承的端盖及其应用的铁壳电机
CN108035778A (zh) 一种按压无轴承密封机头
CN203604644U (zh) 适用于飞溅润滑模式的油封
CN207795663U (zh) 一种带密封效果的散热风扇绝缘盖结构
CN214837819U (zh) 高温透气防尘轴承
CN210611365U (zh) 一种可降温口红盒
CN201991951U (zh) 轴承复合防尘盖

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16903606

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16903606

Country of ref document: EP

Kind code of ref document: A1