JP2002369827A - Dental hand piece - Google Patents

Dental hand piece

Info

Publication number
JP2002369827A
JP2002369827A JP2001180341A JP2001180341A JP2002369827A JP 2002369827 A JP2002369827 A JP 2002369827A JP 2001180341 A JP2001180341 A JP 2001180341A JP 2001180341 A JP2001180341 A JP 2001180341A JP 2002369827 A JP2002369827 A JP 2002369827A
Authority
JP
Japan
Prior art keywords
bar sleeve
ball
retainer
balls
rotor
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.)
Pending
Application number
JP2001180341A
Other languages
Japanese (ja)
Inventor
Shosaku Kawada
庄作 川田
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.)
NAKANISHI KK
Original Assignee
NAKANISHI KK
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 NAKANISHI KK filed Critical NAKANISHI KK
Priority to JP2001180341A priority Critical patent/JP2002369827A/en
Publication of JP2002369827A publication Critical patent/JP2002369827A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/32Balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/303Parts of ball or roller bearings of hybrid bearings, e.g. rolling bearings with steel races and ceramic rolling elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2240/00Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70Diameters; Radii
    • F16C2240/80Pitch circle diameters [PCD]
    • F16C2240/82Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD
    • F16C2240/84Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD with full complement of balls or rollers, i.e. sum of clearances less than diameter of one rolling element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2316/00Apparatus in health or amusement
    • F16C2316/10Apparatus in health or amusement in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances
    • F16C2316/13Dental machines

Abstract

PROBLEM TO BE SOLVED: To provide a dental hand piece of an air turbine type in which the wear of balls and a retainer in a ball bearing is prevented as much as possible and of which the increase of the manufacture cost is suppressed. SOLUTION: The dental hand piece is provided with a bar sleeve 13 receiving a dental treating tool, a rotor 16 provided on the bar sleeve so as to rotationally drive the bar sleeve by supplied compressed air, and the ball bearings 14 and 15 provided on the upper part and lower part of the rotor so as to rotatably support the bar sleeve. For the ball bearings at the upper and lower parts, ceramic balls 14c and 15c are used without providing the retainer.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は歯科用ハンドピース
に関し、さらに詳細には、圧縮空気によりバースリーブ
を駆動するタイプの歯科用ハンドピースに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental handpiece, and more particularly, to a dental handpiece of a type in which a bar sleeve is driven by compressed air.

【従来の技術】[Prior art]

【0002】従来の歯科用ハンドピースでは、図3の概
略断面図に示したように、歯科処置工具9を受理して着
脱自在に保持するバースリーブ13が上方及び下方のボ
ールベアリング34,35により回転可能に支承されて
いる。図4(a)(b)はボールベアリング34,35
の上面図及び断面図であり、ボールベアリング34,3
5は外輪34b,35bにR溝を形成した深溝型クラウ
ンタイプのものであって、これら外輪34b,35bと
内輪34a,35aとの間に、リテーナー34d,35
dで所定間隔に保持した複数のボール34c,35cを
挟持している。そして、ボール34c,35cはステン
レスなどの耐食性の金属から形成され、リテーナー34
d,35dは、フェノール樹脂、ポリアセタール樹脂、
ポリアミドイミド樹脂などの耐熱性樹脂材によって形成
されている。
In a conventional dental handpiece, as shown in a schematic sectional view of FIG. 3, a bar sleeve 13 for receiving and removably holding a dental treatment tool 9 is provided by upper and lower ball bearings 34, 35. It is rotatably supported. 4A and 4B show ball bearings 34 and 35.
3A and 3B are a top view and a cross-sectional view of a ball bearing.
Reference numeral 5 denotes a deep-groove crown type in which R grooves are formed in the outer rings 34b and 35b, and retainers 34d and 35 are provided between the outer rings 34b and 35b and the inner rings 34a and 35a.
The plurality of balls 34c, 35c held at a predetermined interval by d are sandwiched. The balls 34c and 35c are made of a corrosion-resistant metal such as stainless steel.
d and 35d are phenolic resin, polyacetal resin,
It is formed of a heat-resistant resin material such as a polyamide-imide resin.

【0003】上記従来の歯科用ハンドピースのボールベ
アリング34,35にあっては、バースリーブ13が回
転駆動されるときに、リテーナー34d,35dは不安
定な状態になり、上下に振られながらボール34c,3
5cと接触し、ボール34c,35c及びリテーナー3
4d,35dを摩耗させ、これらの破損に繋がる原因と
なっており、ハンドピース全体に及ぶ振動や騒音等の不
具合を引き起こすことになる。
In the ball bearings 34 and 35 of the conventional dental handpieces described above, when the bar sleeve 13 is driven to rotate, the retainers 34d and 35d become unstable, and the ball is swung up and down. 34c, 3
5c, the balls 34c, 35c and the retainer 3
4d and 35d are abraded, leading to breakage of them, and cause problems such as vibration and noise that affect the entire handpiece.

【発明が解決しようとする課題】[Problems to be solved by the invention]

【0004】以上のようなリテーナー34d,35dの
摩耗を抑制するため、現状では、使用に先立ってボール
ベアリング34,35に潤滑油を吹き付けている。また
超高速で回転するため、リテーナー34d,35d、内
外輪のレース面とボール34c,35cの接触部の発熱
は大きく、バースリーブ13を駆動するために供給する
圧縮空気によっても充分に冷却することはできない。し
たがって、耐熱性樹脂材からなるリテーナー34d,3
5dであっても、発熱による炭化は避けられず、耐久性
が低くなるという問題がある。また現況下では、自己潤
滑性に優れ、且つオートクレーブに耐えうる材料をリテ
ーナーに採用することは困難である。
At present, lubricating oil is sprayed on the ball bearings 34, 35 prior to use in order to suppress the wear of the retainers 34d, 35d as described above. In addition, since the rotor rotates at an extremely high speed, the heat generated at the contact portions between the retainers 34d, 35d and the race surfaces of the inner and outer races and the balls 34c, 35c is large. Can not. Therefore, the retainers 34d, 3 made of heat resistant resin material
Even with 5d, there is a problem that carbonization due to heat generation is unavoidable and durability is reduced. Under the current situation, it is difficult to employ a material having excellent self-lubricating properties and capable of withstanding autoclave for the retainer.

【0005】本発明は従来技術の欠点に着目し、これを
解決せんとしたものであり、その課題は、ボールベアリ
ングの摩耗に対して良好な耐久性を有し、しかも、製造
コストを削減できるエアタービンタイプの歯科用ハンド
ピースを提供することにある。
The present invention has been made to solve the problem by focusing on the drawbacks of the prior art. The problem is to have good durability against abrasion of the ball bearing and to reduce the manufacturing cost. An object of the present invention is to provide an air turbine type dental handpiece.

【0006】[0006]

【課題を解決するための手段】本発明では、歯科処置工
具を受理するバースリーブと、供給される圧縮空気によ
って前記バースリーブを回転駆動するためバースリーブ
に設けられたローターと、前記バースリーブを回転可能
に支承するため前記ローターの上方及び下方に設けられ
たボールベアリングとを備える歯科用ハンドピースにお
いて、前記上方及び下方のボールベアリングにはリテー
ナーを設けること無く、セラミックボールを使用したこ
とを特徴とする歯科用ハンドピースを提供する。
According to the present invention, there is provided a bar sleeve for receiving a dental treatment tool, a rotor provided on the bar sleeve for rotating the bar sleeve by the supplied compressed air, and a bar sleeve. In a dental handpiece having ball bearings provided above and below the rotor for rotatably supporting, a ceramic ball is used without providing a retainer in the upper and lower ball bearings. To provide a dental handpiece.

【0007】本発明において、セラミックボールとはセ
ラミックから形成されたボールであり、セラミックボー
ルは、その重量と摩擦係数が従来のステンレス鋼からな
るボールのそれぞれ40〜70%程度、40〜60%程
度のものを使用する。セラミックボールは、上記のよう
に、従来のステンレス鋼からなるボールと比較して比重
が格段に小さいので、ボールベアリングが回転している
ときにボールに作用する遠心力もステンレス鋼製ボール
よりも格段に小さく、したがって、セラミックボールを
使用する本発明の歯科用ハンドピースでは、ボールによ
る外輪の摩耗が少なくなり、ボールベアリングの耐久性
が向上する。またセラミックボールは軽量かつ摩擦係数
が小さいので、隣り合うボールどうしが衝突した場合に
も、その衝撃は小さく、ボール自体の摩耗は少なくな
る。また本発明の歯科用ハンドピースでは、リテーナー
を設けないので、ベアリングの自動組立時に、リテーナ
ーを定置するための装置や工程が不必要になり、製造コ
ストの低減が可能になった。
In the present invention, the ceramic ball is a ball formed of ceramic, and the weight and the coefficient of friction of the ceramic ball are about 40 to 70% and about 40 to 60%, respectively, of a conventional ball made of stainless steel. Use those. As described above, the specific gravity of the ceramic ball is much smaller than that of the conventional stainless steel ball, so that the centrifugal force acting on the ball when the ball bearing is rotating is also much greater than that of the stainless steel ball. The dental handpiece of the present invention, which is small and therefore uses ceramic balls, reduces the wear of the outer ring by the balls and improves the durability of the ball bearings. Further, since the ceramic ball is lightweight and has a small coefficient of friction, even when adjacent balls collide, the impact is small and the wear of the ball itself is reduced. Further, in the dental handpiece of the present invention, since no retainer is provided, a device and a process for fixing the retainer at the time of automatically assembling the bearing are not required, and the manufacturing cost can be reduced.

【0008】[0008]

【実施例】以下、本発明の実施例を添付図面に基づいて
説明するが、本発明はこれに限定されるものではない。
ここで、図1は本発明の歯科用ハンドピースの実施例を
示す概略断面図であり、図2(a)は本発明において採
用するリテーナーの上面図であり、図2(b)は図2
(a)におけるIIb−IIbに沿った断面図である。
Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Here, FIG. 1 is a schematic sectional view showing an embodiment of the dental handpiece of the present invention, FIG. 2A is a top view of a retainer employed in the present invention, and FIG.
FIG. 2A is a cross-sectional view along IIb-IIb in FIG.

【0009】本発明に係る歯科用ハンドピースは、図1
に示すように、歯科処置工具9を受理して着脱自在に保
持するバースリーブ13と、圧縮空気によってバースリ
ーブ13を回転駆動するためにバースリーブ13に設け
られたローター16と、バースリーブ13を回転可能に
支承するためローター16の上方及び下方に設けられた
ボールベアリング14,15とをカートリッジケース2
1内に有し、このカートリッジケース21がヘッドハウ
ジング11内に収納され、ヘッドハウジング11にヘッ
ドキャップ18が螺合され、このヘッドキャップ18に
スプリング17とプッシュボタン19が設けられてい
る。またヘッドハウジング11を支持しているヘッドハ
ウジングジャケット12には、ローター16に圧縮空気
を供給するための給気通路12a、及びローター16に
供給された圧縮空気を排出するための排気通路12bが
設けられている。
FIG. 1 shows a dental handpiece according to the present invention.
As shown in FIG. 5, a bar sleeve 13 for receiving and holding the dental treatment tool 9 detachably, a rotor 16 provided on the bar sleeve 13 for rotating and driving the bar sleeve 13 by compressed air, and a bar sleeve 13 are provided. Ball bearings 14 and 15 provided above and below the rotor 16 for rotatably supporting the cartridge case 2.
1, the cartridge case 21 is housed in the head housing 11, a head cap 18 is screwed into the head housing 11, and a spring 17 and a push button 19 are provided on the head cap 18. The head housing jacket 12 supporting the head housing 11 is provided with an air supply passage 12a for supplying compressed air to the rotor 16 and an exhaust passage 12b for discharging compressed air supplied to the rotor 16. Have been.

【0010】前記上方及び下方のボールベアリング1
4,15は、外輪14b,15bの溝を斜め向きに形成
したアンギュラ型のものであって、外輪14b,15b
と内輪14a,15aとの間にリテーナーを設けること
無く、複数のセラミックボール14c,15cが挟持さ
れている。各セラミックボール14c,15cはセラミ
ックから形成されたものであって、その重量と摩擦係数
が従来のステンレス鋼からなるボールのそれぞれ40〜
70%程度、40〜60%程度のものが使用される。
The upper and lower ball bearings 1
Reference numerals 4 and 15 denote angular-type grooves in which the grooves of the outer rings 14b and 15b are formed obliquely.
A plurality of ceramic balls 14c and 15c are sandwiched without providing a retainer between the ceramic balls 14c and 15a. Each of the ceramic balls 14c and 15c is made of ceramic and has a weight and a friction coefficient of 40 to 40 of those of conventional balls made of stainless steel.
About 70%, about 40 to 60% are used.

【0011】ところで、リテーナーを設けないボールベ
アリング、すなわち、フルボール型ベアリングは従来か
ら知られているが、これは、ステンレス製ボールを用い
たものであり、多くの場合に低速で回転する回転機器に
使用されている。つまり、歯科用ハンドピースのよう
に、毎分40万回転以上にもなる超高速回転機器では、
ステンレス製ボールの摩擦抵抗が大きくて外輪と内輪を
摩耗させてしまったり、隣り合うステンレス製ボールど
うしが接触することによるボール自体の摩耗も大きかっ
たからである。しかしながら、本発明では、軽量かつ表
面摩擦係数が小さいセラミックボール14c,15cを
ボールベアリング14,15に使用したので、外輪14
b,15b、内輪14a,15a及びボール14c,1
5c自体の摩耗が格段に少なくなり、ボールベアリング
14,15の耐久性が改善され、超高速回転機器である
歯科用ハンドピース10にフルボール型ベアリングが使
用可能になった。
By the way, a ball bearing without a retainer, that is, a full ball type bearing has been conventionally known. This is a type using a stainless steel ball, and in many cases, a rotating device which rotates at a low speed. Used in In other words, in an ultra-high-speed rotating device such as a dental handpiece that can rotate at more than 400,000 revolutions per minute,
This is because the frictional resistance of the stainless steel ball is large, causing the outer ring and the inner ring to be worn, and the abrasion of the ball itself due to contact between adjacent stainless steel balls is also large. However, in the present invention, since the ceramic balls 14c, 15c, which are lightweight and have a small surface friction coefficient, are used for the ball bearings 14, 15, the outer ring 14 is used.
b, 15b, inner rings 14a, 15a and balls 14c, 1
The wear of 5c itself has been remarkably reduced, the durability of the ball bearings 14 and 15 has been improved, and a full ball type bearing can be used for the dental handpiece 10 which is an ultra-high speed rotating device.

【0012】図1及び図2を参照して更に説明すれば、
給気通路12aを通して送られた圧縮空気をローター1
6が受けると、バースリーブ13は回転を開始し、この
とき、ボールベアリング14,15の内輪14a,15
aはバースリーブ13側に固定されているため、バース
リーブ13と伴に回転を開始する。そして、セラミック
ボール14c,15cは、内輪14a,15aに接触す
ることにより、自転しながら外輪14b,15bの内面
を転がる。外輪14b,15bはカートリッジケース2
1側に固定されているため、それ自体は回転しないが、
遠心力を受けながら回転するセラミックボール14c,
15cから、絶えず摩擦力が作用する。しかしながら、
本発明の歯科用ハンドピース10におけるセラミックボ
ール14c,15cは比重が軽いため、このセラミック
ボール14c,15cに作用する遠心力は、従来のステ
ンレス製ボールよりも格段に小さく、しかも、セラミッ
クボール14c,15cはその表面の摩擦係数も小さい
ため、特に、外輪14b,15bとセラミックボール1
4c,15cの摩耗を飛躍的に低減させることが可能に
なった。なお、セラミックボール14c,15cは、従
来のステンレス製ボールと比較しても耐熱温度が高いた
め、ケミクレーブ、オートクレーブ等の滅菌処理による
劣化を少なくし、耐久性向上を図ることができる。また
本発明におけるボールベアリング14,15は、リテー
ナーを設けないので、組立時にリテーナーを定置するた
めの装置や工程が不必要になり、製造コストの低減も可
能になる。
Referring further to FIGS. 1 and 2,
The compressed air sent through the air supply passage 12a is supplied to the rotor 1
6, the bar sleeve 13 starts to rotate, and at this time, the inner rings 14a, 15 of the ball bearings 14, 15
Since a is fixed to the bar sleeve 13 side, it starts rotating with the bar sleeve 13. Then, the ceramic balls 14c, 15c come into contact with the inner rings 14a, 15a to roll on the inner surfaces of the outer rings 14b, 15b while rotating. Outer rings 14b and 15b are cartridge case 2
Because it is fixed to one side, it does not rotate itself,
A ceramic ball 14c that rotates while receiving centrifugal force,
From 15c, the frictional force constantly acts. However,
Since the specific gravity of the ceramic balls 14c and 15c in the dental handpiece 10 of the present invention is light, the centrifugal force acting on the ceramic balls 14c and 15c is much smaller than that of a conventional stainless steel ball. 15c also has a small coefficient of friction on its surface.
It has become possible to drastically reduce wear of 4c and 15c. Since the ceramic balls 14c and 15c have a higher heat resistance temperature than conventional stainless steel balls, deterioration due to sterilization of a chemical clave, an autoclave, or the like can be reduced, and durability can be improved. Further, since the ball bearings 14 and 15 according to the present invention do not have a retainer, a device and a process for fixing the retainer at the time of assembling become unnecessary, and the manufacturing cost can be reduced.

【0013】[0013]

【発明の効果】本発明の歯科用ハンドピースは、ボール
ベアリングにリテーナーを設けること無く、セラミック
ボールが使用されるので、ボールベアリングの摩耗に対
して良好な耐久性を有し、しかも、製造コストが削減で
きるという利点がある。
The dental handpiece of the present invention uses ceramic balls without providing a retainer on the ball bearing, so that the dental handpiece has good durability against abrasion of the ball bearing, and has a high manufacturing cost. There is an advantage that it can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の歯科用ハンドピースの実施例を示す概
略断面図である。
FIG. 1 is a schematic sectional view showing an embodiment of a dental handpiece of the present invention.

【図2】(a)は本発明において採用するリテーナーの
上面図であり、(b)は(a)におけるIIb−IIbに沿
った断面図である。
FIG. 2A is a top view of a retainer used in the present invention, and FIG. 2B is a cross-sectional view along IIb-IIb in FIG.

【図3】従来例の概略断面図である。FIG. 3 is a schematic sectional view of a conventional example.

【図4】(a)は従来のリテーナーの上面図であり、
(b)は(a)におけるIVb−IVbに沿った断面図であ
る。
FIG. 4A is a top view of a conventional retainer,
(B) is a cross-sectional view along IVb-IVb in (a).

【符号の説明】[Explanation of symbols]

10 歯科用ハンドピース 13 バースリーブ 14,15 ボールベアリング 14a,15a 内輪 14b,15b 外輪 14c,15c セラミックボール 16 ローター Reference Signs List 10 Dental handpiece 13 Bar sleeve 14, 15 Ball bearing 14a, 15a Inner ring 14b, 15b Outer ring 14c, 15c Ceramic ball 16 Rotor

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 歯科処置工具を受理するバースリーブ
と、供給される圧縮空気によって前記バースリーブを回
転駆動するためバースリーブに設けられたローターと、
前記バースリーブを回転可能に支承するため前記ロータ
ーの上方及び下方に設けられたボールベアリングとを備
える歯科用ハンドピースにおいて、 前記上方及び下方のボールベアリングにはリテーナーを
設けること無く、セラミックボールを使用したことを特
徴とする歯科用ハンドピース。
1. A bar sleeve for receiving a dental treatment tool, a rotor provided on the bar sleeve for rotationally driving the bar sleeve by supplied compressed air,
A dental handpiece comprising ball bearings provided above and below said rotor for rotatably supporting said bar sleeve, wherein said upper and lower ball bearings use ceramic balls without providing a retainer. A dental handpiece characterized by the following.
JP2001180341A 2001-06-14 2001-06-14 Dental hand piece Pending JP2002369827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001180341A JP2002369827A (en) 2001-06-14 2001-06-14 Dental hand piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001180341A JP2002369827A (en) 2001-06-14 2001-06-14 Dental hand piece

Publications (1)

Publication Number Publication Date
JP2002369827A true JP2002369827A (en) 2002-12-24

Family

ID=19020780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001180341A Pending JP2002369827A (en) 2001-06-14 2001-06-14 Dental hand piece

Country Status (1)

Country Link
JP (1) JP2002369827A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885751B1 (en) 2008-02-22 2009-02-26 조선대학교산학협력단 Dental handpiece having a advanced driving assembly
DE102008013851A1 (en) 2008-03-12 2009-09-24 Scican Medtech Ag Dental medicinal tool holder, has head with chuck that is operated by adjustable push button, which is pre-stressed by spring, where spring is supported at bearing sleeve and is designed as convex curved spring ring
DE102010011630A1 (en) 2010-03-16 2011-09-22 Eugen Elbofner Dental tool holder, has ball bearings arranged at bearing sleeves, and spring prestressing pushbutton and positioning one of bearings, where spring is formed as convexly curved snap ring and arranged between pushbutton and thrust washer
CN103462702A (en) * 2013-09-29 2013-12-25 桂林市啄木鸟医疗器械有限公司 High-speed turbine handpiece movement for dental department

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01223951A (en) * 1988-03-03 1989-09-07 Koyo Seiko Co Ltd Dental hand piece
JPH0370113A (en) * 1989-08-09 1991-03-26 Toray Ind Inc Roll-in type capacitor
JPH0638983A (en) * 1992-07-27 1994-02-15 Morita Mfg Co Ltd Water-lubricated bearing apparatus for dental handpiece
JPH0775612B2 (en) * 1987-03-17 1995-08-16 光洋精工株式会社 Bearing device for dental handpiece

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0775612B2 (en) * 1987-03-17 1995-08-16 光洋精工株式会社 Bearing device for dental handpiece
JPH01223951A (en) * 1988-03-03 1989-09-07 Koyo Seiko Co Ltd Dental hand piece
JPH0370113A (en) * 1989-08-09 1991-03-26 Toray Ind Inc Roll-in type capacitor
JPH0638983A (en) * 1992-07-27 1994-02-15 Morita Mfg Co Ltd Water-lubricated bearing apparatus for dental handpiece

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100885751B1 (en) 2008-02-22 2009-02-26 조선대학교산학협력단 Dental handpiece having a advanced driving assembly
DE102008013851A1 (en) 2008-03-12 2009-09-24 Scican Medtech Ag Dental medicinal tool holder, has head with chuck that is operated by adjustable push button, which is pre-stressed by spring, where spring is supported at bearing sleeve and is designed as convex curved spring ring
DE102010011630A1 (en) 2010-03-16 2011-09-22 Eugen Elbofner Dental tool holder, has ball bearings arranged at bearing sleeves, and spring prestressing pushbutton and positioning one of bearings, where spring is formed as convexly curved snap ring and arranged between pushbutton and thrust washer
CN103462702A (en) * 2013-09-29 2013-12-25 桂林市啄木鸟医疗器械有限公司 High-speed turbine handpiece movement for dental department

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