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KR100888997B1 - Spindle integrated with bearing of handpiece for dental clinic - Google Patents

Spindle integrated with bearing of handpiece for dental clinic Download PDF

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Publication number
KR100888997B1
KR100888997B1 KR1020080104632A KR20080104632A KR100888997B1 KR 100888997 B1 KR100888997 B1 KR 100888997B1 KR 1020080104632 A KR1020080104632 A KR 1020080104632A KR 20080104632 A KR20080104632 A KR 20080104632A KR 100888997 B1 KR100888997 B1 KR 100888997B1
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KR
South Korea
Prior art keywords
spindle
bearing
handpiece
spring
ball
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Application number
KR1020080104632A
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Korean (ko)
Inventor
임중연
Original Assignee
두나미스덴탈 주식회사
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Priority to KR1020080104632A priority Critical patent/KR100888997B1/en
Application granted granted Critical
Publication of KR100888997B1 publication Critical patent/KR100888997B1/en

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    • 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
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/141—Tool-holders, i.e. operating tool holders, e.g. burr holders in an angled handpiece
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/162—Chucks or tool parts which are to be held in a chuck
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1622—Drill handpieces
    • 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
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • 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
    • A61C1/12—Angle hand-pieces
    • 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
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/142—Operating tool blocking means
    • A61C1/144—Operating tool blocking means constricting the operating tool, e.g. chuck
    • 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
    • A61C1/14—Tool-holders, i.e. operating tool holders, e.g. burr holders
    • A61C1/145—Instruments or accessories for tool holders
    • 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
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • A61C1/181—Bearings or lubricating arrangements, e.g. air-cushion bearings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Dentistry (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A spindle integrated with bearing of handpiece for dental clinic is provided, which improves the structural rigidity of the spindle, reduces the noise and vibration of the spindle, and prevents the damage of the bearing. A spindle integrated with bearing of handpiece for dental clinic comprises: a spindle(2) which together rotates in the rotation of an impeller; a bearing(6) which is equipped with a gearing chain ball(630) and is installed at the outer side of the spindle and supports the spindle; a spring(3) installed at the inside of the spindle; a spring cap(4) which is installed in order to prevent separation of the spindle of the spring; and a ball groove positioning the ball of bearing on the outer circumference of the spindle.

Description

치과용 핸드피스의 베어링 일체구조 스핀들{Spindle integrated with bearing of Handpiece for Dental Clinic}Spindle integrated with bearing of Handpiece for Dental Clinic

본 발명은 치과용 핸드피스에 관한 것으로서, 더욱 상세하게는 치과용 핸드피스의 스핀들 구조를 개선하여 스핀들의 구조적 강성을 향상시킬 수 있도록 한 것이다.The present invention relates to a dental handpiece, and more particularly, to improve the structural structure of the spindle by improving the spindle structure of the dental handpiece.

일반적으로, 치과용 핸드피스는 치과에서는 치아를 갈아내는데 사용하는 필수품으로서, 핸드피스에 버를 꽂아서 사용하게 되며, 장착되는 버는 사용 용도에 따라 다양한 종류가 있다.In general, a dental handpiece is a necessity used to grind teeth in the dentist, and is used by inserting a burr into the handpiece, and there are various types of burrs installed.

이러한 치과용 핸드피스의 종래 구조 및 작용에 대해 도 1 및 도 2를 참조하여 살펴보면 다음과 같다.The conventional structure and operation of the dental handpiece with reference to Figures 1 and 2 as follows.

도 1 및 도 2를 참조하면, 종래 치과용 핸드피스(H)는 하우징(5) 중심부에 스핀들(2)이 베어링(6)의 지지를 받으면서 회전가능하도록 설치되고, 상기 스핀들(2) 외측에는 공압을 전달받아 회전하는 임펠러(1)가 결합된다.1 and 2, the conventional dental handpiece (H) is installed in the center of the housing (5) so that the spindle (2) is rotatable while being supported by the bearing (6), outside the spindle (2) The impeller (1) that receives the air pressure and rotates is coupled.

이때, 상기 베어링(6)은 스핀들(2)의 상부측과 하부측에 각각 설치되고, 상기 베어링(6) 외측에는 베어링의 외륜을 잡아주는 역할과 회전시 발생되는 진동을 흡수하는 역할을 하는 오링댐퍼(7)가 설치된다.At this time, the bearing (6) is respectively installed on the upper side and the lower side of the spindle (2), the outer ring of the bearing (6) O-ring that serves to hold the outer ring of the bearing and to absorb the vibration generated during rotation The damper 7 is provided.

그리고, 하우징(5) 상부측에는 푸쉬버튼 캡(8)이 설치되고, 상기 푸쉬버튼 캡(8)에는 푸쉬버튼(9)이 설치되고, 상기 푸쉬버튼(9) 하측에는 스핀들(2)을 관통하는 버홀더(10)가 설치되며, 상기 버홀더(10) 하측에는 버홀더와 함께 승강함에 따라 오므라들거나 벌어짐으로써 버(12)의 탈착이 가능하게 하는 버핀(11)이 설치된다.In addition, a push button cap 8 is installed at an upper side of the housing 5, a push button 9 is installed at the push button cap 8, and a spindle 2 penetrates below the push button 9. A burr holder 10 is installed, and a buffing member 11 is installed at the lower side of the burr holder 10 so that the burr 12 can be detached from the burr holder 12 as it rises or opens as it is lifted with the burr holder.

그리고, 상기 버핀(11)의 하부에는 푸쉬버튼(9)을 누름에 따라 버홀더(10) 및 버핀(11)의 하강을 허용하도록 압축되는 스프링(3)이 설치되고, 상기 스핀들(2)의 하단부에는 상기 스프링(3)의 이탈을 방지하는 스프링캡(4)이 나사 결합된다.In addition, a spring (3) is installed at the lower portion of the buffing (11) to compress the buckle holder (10) and the buffing (11) as the push button (9) is pressed, and the spindle (2) At the lower end, a spring cap 4 is screwed to prevent separation of the spring 3.

한편, 상기 스핀들(2) 내주면은 스프링(3)이 압축되기 전 상태를 기준으로 상기 버핀(11)이 위치하는 부분이 테이퍼진 형태로서, 버핀(11)의 상부측은 버핀 하부측에 비해 더 큰 직경을 갖도록 형성된다. On the other hand, the inner circumferential surface of the spindle (2) is a tapered shape in which the portion where the buffing 11 is located on the basis of the state before the spring 3 is compressed, the upper side of the buffing 11 is larger than the lower side of the buffing 11 It is formed to have a diameter.

이와 같이 구성된 종래의 핸드피스(H)는 버(12)가 장착된 상태에서 버(12)의 교환이 요구되거나 버(12)를 탈거시키고자 할 경우, 다음과 같이 동작하게 된다.In the conventional handpiece H configured as described above, when the burr 12 is required to be replaced or the burr 12 is to be removed while the burr 12 is mounted, the handpiece H operates as follows.

먼저, 푸쉬버튼(9)을 누르게 되면, 누름력이 버홀더(10)와 버핀(11)을 통해 스프링(3)으로 전달되고, 상기 스프링(3)이 압축되면서 버홀더(10)와 버핀(11)이 하강하게 된다.First, when the push button 9 is pressed, the pressing force is transmitted to the spring 3 through the bur holder 10 and the buffing 11, and the spring 3 is compressed while the bur holder 10 and the buffing ( 11) will fall.

상기 버홀더(10)와 버핀(11)의 하강에 의해, 상기 버핀(11)이 테이퍼 면을 벗어나 상기 스핀들(2) 내측의 직경이 넓은 부분으로 위치하게 됨에 따라 버핀(11)은 더 이상 버(12)에 대해 쐐기 작용을 수행할 수 없게 된다.By the lowering of the buffer 10 and the buffing 11, the buffing 11 is no longer tapered surface is located in the wide diameter portion of the inside of the spindle 2, the buffing 11 is no longer It becomes impossible to perform wedge action for (12).

이때, 상기 버(12)를 잡아당기면 버핀(11)이 외측으로 벌어지게 되면서 버(12)와 버핀(11)의 간섭이 해소되고, 이에 따라 버(12)는 핸드피스로부터 완전히 이탈된다.At this time, when the burr 12 is pulled out, the buffer 11 is opened to the outside and the interference between the burr 12 and the buffer 11 is eliminated, and thus the burr 12 is completely removed from the handpiece.

한편, 상기 버(12)의 장착시에는 상기한 바와 같이 푸쉬버튼(9)을 누른 상태에서, 버(12)를 최대한 삽입한 다음, 푸쉬버튼(9)에 대한 누름력을 제거해주면, 스프링(3)의 복원력에 의해 버홀더(10) 및 버핀(11)이 상승하여 버(12)가 버핀에 물려 고정된다.On the other hand, when mounting the burr 12, while pressing the push button (9) as described above, insert the bur 12 as much as possible, and then remove the pressing force on the push button (9), spring ( By the restoring force of 3), the bur holder 10 and the buffing 11 are raised, and the bur 12 is bitten and fixed to the buffing.

즉, 상기 스프링(3)의 복원력에 의해 스핀들(2)의 테이퍼진 면에 위치하는 버핀(11)에는 미는힘이 작용하게 되고, 이에 따라 상기 버핀(11)이 쐐기작용을 행함으로써 버(12)가 버핀(11)에 물려 버홀더(10)에 고정되는 것이다.That is, the pushing force is applied to the buffing 11 located on the tapered surface of the spindle 2 by the restoring force of the spring 3, and thus the buffing 11 performs a wedge action, thereby making the burr 12 ) Is fixed to the burr holder 10 is bitten by the buffing 11.

그러나, 이러한 기존의 치과용 핸드피스는 스핀들의 구조적 강성이 낮음으로 인해 다음과 같은 문제점을 안고 있다.However, these conventional dental handpieces have the following problems due to the low structural rigidity of the spindle.

먼저, 치과용 핸드피스(H)는 에어를 이용하여 카트리지의 임펠러(1)를 400,000rpm까지 고속으로 회전시켜 치아를 절삭하는 공구로서, 핸드피스 작동시 스핀들(2)도 고속회전하게 되는데, 기존의 스핀들(2)은 구조적 강성이 낮아 고속에서 발생하는 진동등으로 인해 쉽게 베어링의 피로 파괴가 일어나게 된다.First, the dental handpiece (H) is a tool for cutting teeth by rotating the impeller (1) of the cartridge at a high speed up to 400,000 rpm using air, and the spindle (2) also rotates at high speed when the handpiece is operated. Of the spindle 2 has a low structural rigidity, the fatigue failure of the bearing easily occurs due to vibration generated at high speed.

그리고, 베어링과 강성이 낮은 스핀들과의 조립으로 인해 소음, 진동이 많이 발생하여 제품 신뢰성이 저하되는 문제점이 있다.In addition, due to the assembly of the bearing and the spindle with a low rigidity, there is a problem that a lot of noise and vibration are generated, thereby reducing product reliability.

본 발명은 상기한 제반 문제점을 해결하기 위한 것으로서, 치과용 핸드피스의 스핀들 구조를 개선하여 스핀들의 구조적 강성을 향상시킬 수 있도록 함으로써 스핀들의 소음과 진동을 저감시키는 한편, 스핀들을 지지하는 베어링의 파손을 방지할 수 있도록 하는데 그 목적이 있다. The present invention is to solve the above-mentioned problems, by improving the spindle structure of the dental handpiece to improve the structural rigidity of the spindle to reduce the noise and vibration of the spindle, while breaking the bearing supporting the spindle The purpose is to help prevent this.

상기한 목적을 달성하기 위해 본 발명은, 임펠러의 회전시 함께 회전하는 스핀들과, 내륜과 외륜 및 그 사이에 개재되는 전동체(轉動體)인 볼을 포함하여 구성되며 상기 스핀들 외측에 설치되어 상기 스핀들을 지지하는 베어링과, 상기 스핀들 내측에 설치되는 스프링과, 상기 스프링의 스핀들 이탈을 방지하도록 설치되는 스프링캡을 구비한 치과용 핸드피스에 있어서; In order to achieve the above object, the present invention comprises a spindle that rotates together when the impeller rotates, the inner ring and the outer ring and the ball is a rolling element interposed therebetween and is installed outside the spindle A dental handpiece comprising a bearing for supporting a spindle, a spring installed inside the spindle, and a spring cap installed to prevent the spindle from detaching from the spring;

상기 베어링의 내륜을 제거하는 대신, 상기 스핀들의 직경을 내륜의 외경 치수로 확장하고, 상기 스핀들의 외주면상에는 상기 베어링의 볼이 위치하는 볼그루브(ball groove)를 형성한 것을 특징으로 한다.Instead of removing the inner ring of the bearing, the diameter of the spindle is extended to the outer diameter of the inner ring, and on the outer circumferential surface of the spindle is characterized in that a ball groove (ball groove) in which the ball of the bearing is located is formed.

이와 같이 구성된 본 발명의 효과는 다음과 같다. The effects of the present invention configured as described above are as follows.

본 발명에 따르면, 치과용 핸드피스의 스핀들의 내경 변화는 없는 대신 외경이 기존 내륜의 외경 크기로 확장 됨으로써, 스핀들의 구조적 강성이 현저히 향상될 수 있다.According to the present invention, there is no change in the inner diameter of the spindle of the dental handpiece, but the outer diameter is extended to the outer diameter of the existing inner ring, so that the structural rigidity of the spindle can be significantly improved.

따라서, 기존의 스핀들의 소음과 진동을 저감시키는 한편, 스핀들을 지지하는 베어링의 파손을 방지할 수 있게 되어, 결국 제품 신뢰성을 현저히 향상시킬 수 있게 된다.Therefore, while reducing the noise and vibration of the existing spindle, it is possible to prevent the damage of the bearing supporting the spindle, it is possible to significantly improve the product reliability.

이하 본 발명의 실시를 위한 구체적인 내용을 도 3을 참조하여 상세히 설명하면 다음과 같다. Hereinafter, with reference to Figure 3 will be described in detail for the practice of the present invention.

도 3은 본 발명에 따른 치과용 핸드피스의 요부 단면도로서, 본 발명의 치과용 핸드피스는 하우징(5) 중심부에 스핀들(2)이 베어링(6)의 지지를 받으면서 회전가능하도록 설치되고, 상기 스핀들(2) 외측에는 공압을 전달받아 회전하는 임펠러(1)가 결합된다.Figure 3 is a cross-sectional view of the main portion of the dental handpiece according to the present invention, the dental handpiece of the present invention is installed in the center of the housing (5) so that the spindle (2) rotatably supported by the bearing (6), the Outside the spindle (2) is coupled to the impeller (1) is rotated by receiving a pneumatic pressure.

이때, 본 발명의 스핀들(2) 외경은 기존 치과용 핸드피스에 구비되는 스핀들 지지용 베어링(6)의 내륜(610)의 외경 사이즈를 이루게 되고, 상기 스핀들(2)의 내경은 기존 치과용 핸드피스의 내경과 동일한 사이즈를 이룬다.At this time, the outer diameter of the spindle 2 of the present invention forms the outer diameter of the inner ring 610 of the spindle support bearing 6 provided in the existing dental handpiece, the inner diameter of the spindle 2 is the existing dental hand It has the same size as the inner diameter of the piece.

즉, 본 발명은 기존 치과용 핸드피스에서 베어링(6)의 내륜(610; 도 2 참조)을 제거하는 대신, 상기 스핀들(2)의 직경을 내륜의 외경 치수로 확장하고, 상기 스핀들(2)의 외주면상에는 전동체(轉動體)인 볼(630)이 위치하는 볼그루브(200)를 형성한 것을 그 구성상의 특징으로 한다. 참고로, 도 3에서 미설명부호 640은 볼(630)을 지지하는 케이지이다.That is, the present invention extends the diameter of the spindle 2 to the outer diameter of the inner ring instead of removing the inner ring 610 of the bearing 6 from the existing dental handpiece, and the spindle 2 The ball groove 200 in which the ball 630 which is a rolling element is located on the outer peripheral surface of this is characterized by the structure. For reference, reference numeral 640 in FIG. 3 is a cage for supporting the ball 630.

한편, 상기 베어링(6)은 스핀들(2)의 상부측과 하부측에 각각 설치되고, 상기 베어링(6) 외측에는 베어링의 외륜(620)을 잡아주는 역할과 회전시 발생되는 진 동을 흡수하는 역할을 하는 오링댐퍼(7)가 설치된다.On the other hand, the bearing (6) is respectively installed on the upper side and the lower side of the spindle (2), the outside of the bearing (6) to hold the outer ring 620 of the bearing and to absorb the vibration generated during rotation O-ring damper (7) that serves to serve.

그리고, 상기 하우징(5) 상부측에는 푸쉬버튼(9)의 승강은 허용하되 이탈은 방지하는 푸쉬버튼 캡(8)이 설치되고, 상기 푸쉬버튼 캡(8)에는 푸쉬버튼(9)이 설치되고, 상기 푸쉬버튼(9) 하측에는 스핀들(2)을 관통하는 버홀더(10)가 설치되며, 상기 버홀더(10) 하측에는 버홀더와 함께 승강함에 따라 오므라들거나 벌어짐으로써 버(12)의 탈착이 가능하게 하는 버핀(11)이 설치된다.In addition, a push button cap 8 is installed at an upper side of the housing 5 to allow lifting of the push button 9, and prevents the push button 9 from escaping. A push button 9 is installed at the push button cap 8. A bur holder 10 penetrating the spindle 2 is installed below the push button 9, and the burr 12 is detached from the bur holder 10 by being lifted or unrolled as it moves up and down with the bur holder. The buffing 11 which enables it is provided.

그리고, 상기 버핀(11)의 하부에는 푸쉬버튼(9)을 누름에 따라 버홀더(10) 및 버핀(11)의 하강을 허용하도록 압축되는 스프링(3)이 설치되고, 상기 스핀들(2)의 하단부에는 상기 스프링(3)의 이탈을 방지하는 스프링캡(4)이 결합된다.In addition, a spring (3) is installed at the lower portion of the buffing (11) to compress the buckle holder (10) and the buffing (11) as the push button (9) is pressed, and the spindle (2) The lower end portion is coupled to the spring cap (4) to prevent the separation of the spring (3).

한편, 상기 스핀들(2) 내주면은 스프링(3)이 압축되기 전 상태를 기준으로 상기 버핀(11)이 위치하는 부분이 테이퍼진 형태로서, 버핀(11)의 상부측은 하부측에 비해 더 큰 직경을 갖도록 형성된다. On the other hand, the inner circumferential surface of the spindle (2) is a tapered shape of the portion where the buffing 11 is located on the basis of the state before the spring 3 is compressed, the upper side of the buffing 11 is larger diameter than the lower side It is formed to have.

이와 같이 구성된 본 발명의 작용은 다음과 같다.The operation of the present invention configured as described above is as follows.

본 발명은 치과용 핸드피스는 스핀들(2)의 내경 변화는 없는 대신 그 외경이 기존 내륜(610)의 외경 사이즈로 확장되게 됨으로써, 스핀들(2)의 구조적 강성이 현저히 향상될 수 있다.In the present invention, the dental handpiece has no change in the inner diameter of the spindle 2, but the outer diameter thereof is extended to the outer diameter size of the existing inner ring 610, so that the structural rigidity of the spindle 2 can be significantly improved.

즉, 본 발명의 스핀들(2)은 그 두께가 현저히 두꺼워지게 되며, 결국 구조적 강성이 향상되는 것이다.That is, the spindle 2 of the present invention becomes significantly thicker in thickness, and consequently, structural rigidity is improved.

한편, 상기 본 발명의 스핀들(2)은 확장된 직경을 갖는 외주면 상에 베어링(6)의 볼(630)이 위치하게 되는 볼그루브(200)를 가짐으로써 기존 베어링의 내륜(610) 역할을 겸하게 되된다. Meanwhile, the spindle 2 of the present invention has a ball groove 200 in which the ball 630 of the bearing 6 is positioned on an outer circumferential surface having an expanded diameter to serve as an inner ring 610 of the existing bearing. Become.

상기 스핀들이 내륜 역할을 겸하게 됨에 따라 상기 베어링의 부품수도 줄어들게 되며, 이로써 치과용 핸드피스 구조를 전체적으로 단순화시킬 수 있게되는 것이다.As the spindle serves as an inner ring, the number of parts of the bearing is also reduced, thereby simplifying the dental handpiece structure as a whole.

본 발명은 상기와 같은 스핀들(2)의 구조 개선에 의해, 기존에 스핀들을 지지하던 베어링의 파손으로 인해 발생하던 잦은 핸드피스 카트리지 교환을 해소할 수 있게 되며, 핸드피스 카트리지 교환에 따른 비용 손실을 줄일 수 있게 되어, 결국 제품 신뢰성을 현저히 향상시킬 수 있게 된다.The present invention, by improving the structure of the spindle (2) as described above, it is possible to eliminate the frequent handpiece cartridge replacement caused by the breakage of the bearing supporting the spindle, and to reduce the cost of the handpiece cartridge replacement This can result in a significant improvement in product reliability.

한편, 본 발명의 권리는 위에서 설명된 실시 예에 한정되지 않고 청구범위에 기재된 바에 의해 정의되며, 본 발명의 분야에서 통상의 지식을 가진 자가 청구범위에 기재된 권리범위 내에서 다양한 변형과 개작을 할 수 있다는 것은 자명하다.On the other hand, the rights of the present invention is not limited to the embodiments described above, but is defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self evident.

예컨대, 상기한 실시예의 스핀들(2)과 베어링(6)의 내륜을 일체화하면서 스핀들(2)의 직경을 확장시키는 기술사상은 치과용 핸드피스에 있어서 기타 다른 구성요소의 위치 및 형상 변경이 이루어지더라도 적용될 수 있음은 당업자에게는 당연한 것이며, 이는 본 발명의 권리범위에 속한다 할 것이다.For example, the technical idea of expanding the diameter of the spindle 2 while integrating the inner ring of the spindle 2 and the bearing 6 of the above-described embodiment does not change the position and shape of other components in the dental handpiece. It can be applied even if it is natural to those skilled in the art, which will belong to the scope of the present invention.

또한, 상기한 실시예에서 볼은 로울러로 대체되고, 볼그루브(200) 역시 로울러에 맞는 형상의 홈으로 그 형상이 대체될 수 있음은 물론이다.In addition, in the above-described embodiment, the ball is replaced by a roller, and the ball groove 200 may also be replaced by a groove having a shape that fits the roller.

도 1은 치과용 핸드피스의 외관을 예시한 도면1 illustrates the appearance of a dental handpiece

도 2는 도 1의 요부를 나타낸 것으로서, 종래 구조에 따른 치과용 핸드피스의 요부 단면도 Figure 2 shows the main portion of Figure 1, a sectional view of the main portion of the dental handpiece according to the conventional structure

도 3은 본 발명에 따른 치과용 핸드피스의 요부 단면도Figure 3 is a cross-sectional view of the main portion of the dental handpiece according to the present invention

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1: 임펠러 2: 스핀들1: impeller 2: spindle

200:볼그루브 610:내륜200: ball groove 610: inner ring

620:외륜 630:볼620: outer ring 630: ball

640:케이지 3: 스프링640: cage 3: spring

4: 스프링캡 5:하우징4: spring cap 5: housing

6:베어링 7:오링댐퍼6: bearing 7: O-ring damper

8:푸쉬버튼 캡 9:푸쉬버튼 8: Push Button Cap 9: Push Button

10:버홀더 11:버핀10: Burr holder 11: Buffin

12:버 12: Bur

Claims (2)

임펠러의 회전시 함께 회전하는 스핀들과, 내륜과 외륜 및 그 사이에 개재되는 전동체인 볼을 포함하여 구성되며 상기 스핀들 외측에 설치되어 상기 스핀들을 지지하는 베어링과, 상기 스핀들 내측에 설치되는 스프링과, 상기 스프링의 스핀들 이탈을 방지하도록 설치되는 스프링캡을 구비한 치과용 핸드피스에 있어서; A spindle configured to rotate together with the impeller, an inner ring and an outer ring, and a rolling chain ball interposed therebetween, a bearing installed outside the spindle to support the spindle, and a spring installed inside the spindle; In the dental handpiece having a spring cap is installed to prevent the spindle departure of the spring; 상기 베어링의 내륜을 제거하는 대신, 상기 스핀들의 직경을 내륜의 외경 치수로 확장하고, 상기 스핀들의 외주면상에는 상기 베어링의 볼이 위치하는 볼그루브를 형성한 것을 특징으로 하는 치과용 핸드피스의 스핀들 구조.Instead of removing the inner ring of the bearing, the diameter of the spindle is extended to the outer diameter of the inner ring, the spindle structure of the dental handpiece, characterized in that on the outer circumferential surface of the spindle formed a ball groove in which the ball of the bearing is located . 제 1 항에 있어서,The method of claim 1, 상기 볼그루브는 스핀들 상측 및 하측에 각각 형성됨을 특징으로 하는 치과용 핸드피스의 스핀들 구조.The ball groove is the spindle structure of the dental handpiece, characterized in that formed on the upper and lower spindle respectively.
KR1020080104632A 2008-10-24 2008-10-24 Spindle integrated with bearing of handpiece for dental clinic KR100888997B1 (en)

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KR101441446B1 (en) 2012-12-17 2014-09-23 두나미스덴탈 주식회사 Fixing module for rotational stability and reducing of noise and dental clinic handpiece with the same
KR101576456B1 (en) 2014-07-16 2015-12-10 한국기계연구원 The tool holding devices for handpiece
JP2019500920A (en) * 2015-10-29 2019-01-17 メドトロニック・ゾーメド・インコーポレーテッド Method and apparatus for reducing vibration

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US4198754A (en) * 1977-03-14 1980-04-22 Lares Albert J Dental turbine spindle assembly
US5575648A (en) * 1995-03-13 1996-11-19 Lares Research, Inc. Dental turbine spindle assembly
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Publication number Priority date Publication date Assignee Title
KR101441446B1 (en) 2012-12-17 2014-09-23 두나미스덴탈 주식회사 Fixing module for rotational stability and reducing of noise and dental clinic handpiece with the same
KR101576456B1 (en) 2014-07-16 2015-12-10 한국기계연구원 The tool holding devices for handpiece
JP2019500920A (en) * 2015-10-29 2019-01-17 メドトロニック・ゾーメド・インコーポレーテッド Method and apparatus for reducing vibration
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US12070234B2 (en) 2015-10-29 2024-08-27 Medtronic Xomed, Inc. Method and apparatus to reduce vibration

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