KR100575438B1 - Air motor - Google Patents

Air motor Download PDF

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Publication number
KR100575438B1
KR100575438B1 KR1019990006484A KR19990006484A KR100575438B1 KR 100575438 B1 KR100575438 B1 KR 100575438B1 KR 1019990006484 A KR1019990006484 A KR 1019990006484A KR 19990006484 A KR19990006484 A KR 19990006484A KR 100575438 B1 KR100575438 B1 KR 100575438B1
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KR
South Korea
Prior art keywords
air supply
air
casing
projection
stator
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KR1019990006484A
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Korean (ko)
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KR19990072980A (en
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카키모토마사카주
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유에이치티 가부시키가이샤
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Publication of KR100575438B1 publication Critical patent/KR100575438B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01C13/02—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby for driving hand-held tools or the like
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

본 발명의 목적은 성형성이 우수하고, 접속이 견고하며 분해작업이 간단한 에어모터를 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide an air motor having excellent moldability, solid connection and simple disassembly.

본 발명의 해결수단은, 파이프형상의 케이싱(3) 후단측 내주면에 형성한 직선적인 안내요철조(案內凹凸條)(33)에 급기용이음(7)의 측둘레면에 형성하고 있는 피안내요철조(17b)를 회전불가능하게 직선적으로 걸어맞춘 후, 너트부재(9)를 상기 케이싱(3) 후단측 외주면에 나사산이 형성된 외측나사(13)에 나사결합시켜, 그 제2돌기(29b)를 급기용이음(7)에 대한 선단부(17)의 제1돌기(17a)에 눌러서 걸어맞춰 제1돌기(17a), 제2돌기(29b)와의 걸어맞춤 효과로 너트부재(9)의 풀림을 방지하고 제1돌기(17a), 제2돌기(29b)와의 걸어맞춤이 해제되도록 너트부재(9)를 회전시켜 제거하여 급기용이음(7)을 분리하는 것이다.The solution of the present invention is a surface formed on the side circumferential surface of the air supply joint (7) in a straight guide unevenness (33) formed on the inner peripheral surface of the rear end side of the pipe-shaped casing (3) After the inner concave-convex groove 17b is linearly rotatably fastened, the nut member 9 is screwed to the outer thread 13 having a thread formed on the outer peripheral surface of the rear end side of the casing 3, and the second projection 29b thereof. Is pressed against the first projection 17a of the distal end portion 17 with respect to the air supply fitting 7 to loosen the nut member 9 by engaging with the first projection 17a and the second projection 29b. The nut member 9 is removed by rotating the nut member 9 so that the first protrusion 17a and the second protrusion 29b are released.

에어모터, 고정자, 베인, 회전자, 돌기Air motor, stator, vane, rotor, turning

Description

에어모터{AIR MOTOR}Air motor {AIR MOTOR}

도 1은 본 실시예의 에어모터의 종단면도;1 is a longitudinal sectional view of an air motor of the present embodiment;

도 2는 주요부의 분해사시도;2 is an exploded perspective view of a main part;

도 3은 도 1의 (A)-(A)선에 따른 단면도; 및
도 4는 종래의 에어모터의 종단면도이다.3 is a cross-sectional view taken along the line (A)-(A) of FIG. 1; And
4 is a longitudinal sectional view of a conventional air motor.

- 부호의 간단한 설명 --A brief description of the code-

A: 에어모터 2: 회전자A: air motor 2: rotor

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3: 케이싱 6: 배기경로3: casing 6: exhaust path

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7: 급기용이음 17: 선단부7: Supply joint 17: Tip

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17a: 제1돌기 17b: 피안내요철조17a: first projection 17b: guide groove

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12: 베인(vane) 1: 고정자12: vane 1: stator

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5: 급기경로 13: 외측나사5: Supply path 13: Outer thread

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27: 급기통부 33: 안내요철조27: air supply cylinder 33: guide uneven

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29b: 제2돌기 27c-4:제1급기구멍(급기구멍)
27b-2: 제2급기구멍(급기구멍)29b: 2nd projection 27c-4: 1st air supply hole (air supply hole)
27b-2: 2nd air supply hole (air supply hole)

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본 발명은 에어그라인더(air grinder)와 같은 연삭ㆍ연마작업에 이용하는 공업용기구, 또는 치과용 핸드피스(hand-piece) 등의 구동원으로서 이용되는 에어모터에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air motor used as a driving source for industrial equipment used for grinding and polishing operations such as air grinders, or dental hand-pieces.

현재, 연삭ㆍ연마작업은 물론, 치과용 핸드피스 등의 구동원으로서 사용되는 에어모터는 일반적으로 도 4에 도시된 구조로 되어 있다.At present, the air motor used as a driving source of a grinding | polishing hand grinding etc. as well as a dental handpiece generally has the structure shown in FIG.

복수의 베인(vane)(12)을 구비한 회전자(rotor)(2)를 수용한 고정자(stator)(1)를 파이프형상의 케이싱(3)에 끼워 넣어 장착하고, 그 파이프형상의 케이싱(3)의 전방부에 연마ㆍ연삭공구 유닛(4)을 분리가능하게 접속하고, 고정자(1)와 케이싱(3) 사이에 급기경로(5)와 배기경로(6)를 형성하고, 케이싱(3)의 후방부에 급기용이음(7)을 설치하고, 또한, 급기용이음(7)에 대해 전진후퇴 가능하게 나사결합하여 밸브의 열리는 정도를 조정하는 손잡이부(8)를 설치하고, 그 급기용이음(7) 및 급기경로(5)로 고정자(1)내에 압축공기를 압송하여 회전자(2)를 회전시키도록 되어 있다.A stator 1 containing a rotor 2 having a plurality of vanes 12 is fitted into a pipe-shaped casing 3, and the pipe-shaped casing ( 3, the grinding and grinding tool unit 4 is detachably connected to the front part, and an air supply path 5 and an exhaust path 6 are formed between the stator 1 and the casing 3, and the casing 3 Air supply joint (7) is provided at the rear part of the head), and a handle portion (8) for adjusting the opening degree of the valve by screwing forward and retractably with respect to the air supply joint (7) is provided. The rotor 7 is rotated by compressing compressed air into the stator 1 by the use of the joint 7 and the air supply path 5.

급기용이음(7)의 접속시에는, 급기용이음(7)의 선단부(17) 외주면에 나사산을 형성하여 외측나사(17c)를 구비하고, 그 외측나사(17c)를 케이싱(3) 후단측 내주면에 나사산을 형성한 내측나사(43)에 나사결합하여 급기경로(5)와 배기경로(6)를 연통시키고, 또한, 풀리지 않도록 그 나사결합부를 접착제(도시 안됨)로 고정하고 있다.When the air supply joint 7 is connected, a thread is formed on the outer peripheral surface of the front end portion 17 of the air supply joint 7 to provide an outer thread 17c, and the outer thread 17c is attached to the rear end of the casing 3. A screw thread is connected to the inner screw 43 having a thread formed on the inner circumferential surface to communicate the air supply path 5 and the exhaust path 6, and the screw engagement portion is fixed with an adhesive (not shown) to prevent loosening.

그런데, 파이프형상의 케이싱(3)은 금속제로서, 다이캐스트 성형되어 있다.By the way, the pipe-shaped casing 3 is metal and die-cast.

따라서, 케이싱(3)의 내주면에 나사산을 형성하여 내측나사(43)를 형성하기 위해 나사형을 제작준비하고, 형맞춤시에 그 나사형을 설정하기 위해 부득이하게 성형을 하게 되어, 성형비용이 높아질 뿐만 아니라, 성형공정이 복잡해지는 문제가 있다.
또한, 100℃ 정도에서 가열하여 상기 접착제를 연화시켜서 닦아내지 않으면 급기용이음을 제거할 수 없고, 전문가라도 간단하게 분해할 수 없다는 문제가 있다.Therefore, a thread is formed on the inner circumferential surface of the casing 3 to prepare the thread for forming the inner thread 43, and the mold is unavoidably molded to set the thread at the time of fitting. In addition to being high, there is a problem that the molding process is complicated.
In addition, if the adhesive is softened and wiped by heating at about 100 ° C., there is a problem that the air supply joint cannot be removed, and even an expert cannot easily disassemble it.

또한, 손잡이부(8)는 죄회전으로 밸브를 열고, 우회전으로 밸브를 닫는 구조로되어 있기 때문에, 부주의하게 좌회전을 계속하면 손잡이부(8)가 급기용이음(7)에서 떨어져서 낙하하게 되어, 전문지식이 없는 사용자에게는 좋지 않은 사용방법이다.In addition, since the handle portion 8 has a structure in which the valve is opened in a simple rotation and the valve is closed in the right direction, the handle portion 8 falls off from the air supply joint 7 if the left side is inadvertently continued. This is not good for users without expertise.

본 발명은, 종래 사정에 감안하여 이루어진 것으로서, 성형성이 매우 우수하고, 또한, 접속이 견고하면서 분해작업이 간단한 에어모터를 제공하는 것을 목적으로 한다.This invention is made | formed in view of the conventional situation, and an object of this invention is to provide the air motor which was very excellent in moldability, and was strong in connection, and easy to disassemble.

또 다른 목적은, 손잡이부가 탈락하지 않는 에어모터를 제공하는 것이다.Another object is to provide an air motor in which the handle portion does not fall off.

상기 목적을 달성하기 위한 기술적 수단으로서, 청구항1은, 복수의 베인을 구비한 회전자를 그 축중심과 고정자 내주 중심을 편심시켜서 고정자내에 회전가능하게 삽입하고, 상기 고정자를 파이프형상의 케이싱내에 끼워 넣어 장착함과 아울러, 고정자와 케이싱 사이에 급기경로와 배기경로를 형성하고, 케이싱의 후방부에 급기용이음을 설치하고, 그 급기용이음 및 급기경로를 통해 고정자 내에 압축공기를 압송하여 회전자를 회전시키는 에어모터에 있어서, 상기 케이싱의 후단 외주면에 나사산을 형성하여 외측나사를 구비함과 아울러 상기 후단 내주면에 급기통부와 상기 급기통부에 이어지고 상기 급기통부보다 직경이 큰 선단부를 구비한 급기용이음의 상기 선단부를 회전불가능하게 하는 한편, 직선적으로 출입하는 안내요철조(案內凹凸條)를 설치하고, 상기 선단부의 급기통부측 후면 동일 원주상에 복수개의 제1돌기를 형성하고, 상기 외측나사에 급기통부를 삽입 관통하는 구멍을 뚫은 너트부재를 전진후퇴 가능하게 나사결합하여, 그 너트부재의 상기 제1돌기와의 대응면에 대한 동일 원주상에 그 제1돌기에 눌러 걸어맞추는 제2돌기를 복수개 설치하고 있는 것을 요지로 한다.As a technical means for achieving the above object, Claim 1, the rotor having a plurality of vanes eccentrically its axis center and the stator inner circumference rotatably inserted into the stator, and the stator is inserted into the pipe-shaped casing In addition, the air supply path and the exhaust path are formed between the stator and the casing, the air supply joint is provided at the rear of the casing, and the compressed air is compressed into the stator through the air supply joint and the air supply path to rotate the rotor. In the air motor for rotating the air supply, for forming the screw thread on the outer circumferential surface of the rear end of the casing provided with an outer thread, and the supply end and the supply cylinder to the rear end inner circumferential surface and having a tip having a larger diameter than the supply cylinder portion While the tip end of the joint is not rotatable, the guide groove having a straight line in and out And a plurality of first projections formed on the same circumference of the rear side of the air supply cylinder part side of the distal end, and screwing a nut member having a hole penetrating through the air supply cylinder part to the outer thread so as to be retracted forward and backward. The gist of the present invention is to provide a plurality of second projections which are engaged with the first projections on the same circumference with respect to the corresponding surface with the first projections.

또한 청구항2는, 청구항1 기재의 급기용이음이 압축공기의 공급원에 연통되는 급기구멍을 구비함과 아울러, 그 급기용이음에 나사결합시켜 전진후퇴에 의해 급기구멍을 닫고, 후퇴하여 상기 급기구멍의 열리는 정도를 조정하는 손잡이부를 구비하여 급기용이음의 후단측에 손잡이부의 소정 이상의 후퇴를 저지하는 링(ring)을 착탈가능하게 설치한 것을 요지로 한다.Further, claim 2 is provided with an air supply hole in which the air supply joint according to claim 1 communicates with a source of compressed air, and is screwed into the air supply joint to close the air supply hole by forward and backward retreat, and retreat to supply the air supply hole. The handle part which adjusts the opening degree of the main part is provided in the detachable installation of the ring which prevents retraction of the predetermined | prescribed more than the handle part in the rear end side of the air supply joint.

상기 기술적수단에 의하면 하기의 작용을 나타낸다.According to the said technical means, the following operation | movement is exhibited.

(청구항1) 본 에어모터는 파이프형상의 케이싱 후단측 내주면에 형성된 직선적인 안내요철조(案內凹凸條)에 급기용이음의 측둘레면에 형성하고 있는 피안내요철조를 회전불가능하게 직선적으로 걸어맞춘 후, 너트부재를 상기 케이싱의 후단측 외주면에 나사산이 형성된 외측나사에 나사결합시키고, 그 제2돌기를 급기용이음에 대한 선단부의 제1돌기에 눌러서 걸어맞춘다.(Claim 1) The air motor hangs linearly the guide grooves formed on the side circumferential surface of the air supply joint to the straight guide grooves formed on the inner circumferential surface of the rear end of the pipe-shaped casing. After aligning, the nut member is screwed to the outer thread having a thread formed on the outer peripheral surface of the rear end side of the casing, and the second projection is pressed to the first projection of the distal end of the air supply joint.

이 제1돌기, 제2돌기와의 걸어맞춤 효과로 너트부재의 풀림이 방지된다. 또한, 너트부재와 급기용이음은 한쪽 또는 양쪽을 경질합성수지제로 하는 것이 바람직하다. 그 경우에는 돌기의 탄성력을 이용하여 돌기끼리 견고하게 걸어맞출 수 있다.The loosening of the nut member is prevented by the engagement effect with the first projection and the second projection. The nut member and the air supply joint are preferably made of hard synthetic resin. In that case, the protrusions can be firmly engaged by using the elastic force of the protrusions.

그리고, 제1돌기와 제2돌기와의 걸어맞춤이 해제되도록 너트부재를 회전시켜 제거하면 급기용이음은 분리되고 케이싱내의 수리, 보수점검(회전자, 고정자, 베인 등) 케이싱 교환 등을 실시할 수 있다.Then, if the nut member is rotated and removed so that the engagement between the first and second protrusions is released, the air supply joint is separated and the casing can be repaired and repaired (rotor, stator, vane, etc.) and the casing can be replaced. .

상기 케이싱 후단측 내주면의 안내요철조는 키(key), 세레이션(serration), 스플라인(spline) 등과 같은 기능을 갖기 때문에 후가공으로 용이하게 형성할 수 있고, 또한 외측나사도 간단하게 후가공으로 형성할 수 있다.Guide grooves on the inner circumferential surface of the rear end of the casing may have a function such as a key, a serration, a spline, etc., and thus may be easily formed by post processing, and the outer thread may also be easily formed by post processing. have.

(청구항2) 본 에어모터는 소정의 밸브의 열리는 정도가 되면 손잡이부의 후단이 급기용이음의 후단의 링에 충돌하여 그 이상 손잡이부의 후퇴를 저지한다.(Claim 2) When the air valve reaches the opening degree of a predetermined valve, the rear end of the handle portion collides with the ring of the rear end of the air supply joint, thereby preventing further retraction of the handle portion.

다음으로, 본 발명의 실시예를 도면에 기초하여 설명한다.Next, an embodiment of the present invention will be described based on the drawings.

도 1 및 도 2는 본 발명 에어모터의 실시예를 나타내고 있다. 참조부호 A는 에어모터이다.1 and 2 show an embodiment of the air motor of the present invention. Reference A is an air motor.

이 에어모터(A)는 복수의 베인(12)을 구비한 회전자(2)를 그 축중심을 고정자(1) 내주 중심에 대해서 편심시켜서 고정자(1)내에 회전가능하게 안쪽에 끼워넣고, 상기 고정자(1)를 파이프형상의 케이싱(3)내에 끼워 넣고 고정하고, 그 파이프형상의 케이싱(3)의 전방부에 연마ㆍ연삭공구 유닛(4)을 분리 가능하게 접속하고, 상기 케이싱(3)과 고정자(1) 사이에 급기경로(5)와 배기경로(6)를 형성하고, 케이싱(3) 후방부에 급기용이음(7)을 설치하고, 그 급기용이음(7)에 급기량을 가변하는 손잡이부(8)를 전진후퇴 가능하게 설치하여 구성되어 있다.The air motor (A) is rotatably inserted into the stator (1) by rotating the rotor (2) having a plurality of vanes (12) eccentrically with respect to the inner circumferential center of the stator (1). The stator 1 is inserted into the casing 3 of the pipe-shaped casing and fixed, and the grinding / grinding tool unit 4 is detachably connected to the front part of the pipe-shaped casing 3, and the casing 3 is connected. An air supply path 5 and an air exhaust path 6 are formed between the and stator 1, an air supply joint 7 is provided at the rear of the casing 3, and the air supply amount is supplied to the air supply joint 7. It is comprised by installing the variable handle part 8 so that forward and backward movement is possible.

상기 케이싱(3)은 금속제이고, 그 후단측 외주면의 오목단부(13a)에 나사산을 형성하여 외측나사(13)를 구비하고, 내부의 급기경로(5)와 배기경로(6)에 연통하는 급기구(23a)와 배기구(23b)를 각각 다공(多孔) 형상으로 한 후방 리테이너(23) 후방의 후단측 내주면에 안내요철조(33)를 설치하고 있다.The casing 3 is made of metal, and has a screw thread formed in the recessed end portion 13a of the outer peripheral side of the rear end thereof, the outer screw 13 being provided, and the air supply communicating with the internal air supply path 5 and the exhaust path 6. Guide grooves and recesses 33 are provided on the rear end side inner circumferential surface behind the rear retainer 23 in which the mechanism 23a and the exhaust port 23b each have a porous shape.

이 안내요철조(33)는 본 실시예에서는 세레이션이고, 상기 외측나사(13)와 마찬가지로 케이싱(3)을 다이캐스트 성형한 후의 후가공으로 용이하게 형성할 수 있다.This guide concave-convex groove 33 is a serration in this embodiment, and can be easily formed by post-processing after die-casting the casing 3 similarly to the said external screw 13.

급기용이음(7)은 경질합성수지제이고, 상기 안내요철조(33)에 케이싱(3)의 후단측으로부터 직선적으로 회전불가능하게 걸어맞추어 후방 리테이너(23)에 맞닿는 선단부(17)와 그 선단부(17)에 연이어 설치된 급기통부(27)를 구비하고 너트부재(9)로 체결된다.
상기 선단부(17)는 급기통부(27)와, 후방 리테이너(23)의 상기 급기구(23a)에 연통하는 입구와, 후방 리테이너(23)의 상기 배기구(23b)에 연통하는 출구를 가지고 측둘레면에 상기 안내요철조(33)에 직선적으로 걸어맞추는 피안내요철조(17b)를 설치함과 아울러 후면에 제1돌기(17a)를 동일 원주 상에 등간격을 두고 복수개 설치하고 있다.The air supply joint 7 is made of a hard synthetic resin, and the front end portion 17 and the front end portion 17 which contact the rear retainer 23 by linearly rotatably engaging the guide concave-convex tank 33 from the rear end side of the casing 3. It is provided with a supply cylinder portion 27 installed in succession to 17 and is fastened by a nut member (9).
The tip portion 17 has an air supply port 27, an inlet communicating with the air supply 23a of the rear retainer 23, and an outlet communicating with the exhaust port 23b of the rear retainer 23. The guide grooves and projections 17b to be linearly engaged with the guide grooves 33 on the surface are provided, and a plurality of first projections 17a are provided on the same circumference at equal intervals.

너트부재(9)는 경질합성수지제이고, 중간부분에 격벽(29)을 가지는 구조로 형성되고, 그 격벽(29)을 경계로 하는 후방 리테이너(23)측(전반부측)의 내주면에 나사산을 형성하여 케이싱(3) 후단측 외주면의 외측나사(13)에 나사 결합하는 내측나사(19)를 구비함과 아울러, 그 격벽(29) 중앙부에 상기 급기통부(27)를 삽입 관통하는 구멍(29a)을 뚫고, 그 격벽(29)에 상기 제1돌기(17a)와 상대하는 제2돌기(29b)가 동일 원주 상에 등간격을 두고 복수개 설치되어 있다.The nut member 9 is made of hard synthetic resin, and has a structure having a partition wall 29 in the middle portion thereof, and a thread is formed on the inner circumferential surface of the rear retainer 23 side (front half side) bordering the partition wall 29. And an inner thread 19 for screwing into an outer thread 13 on the outer circumferential surface of the rear end side of the casing 3, and a hole 29a for inserting the air supply port 27 into the center of the partition 29. A plurality of second projections 29b facing the first projections 17a are provided on the partition walls 29 at equal intervals on the same circumference.

상기 급기통부(27)는 내부를 종단하여 일부가 플랜지 형상으로 돌출하는 중간플랜지형상 돌출부(27a)에 의해 전후로 차단된 전통부(前筒部)(27b)와 후통부(後筒部)(27c)를 일체로 구비하고, 후통부(27c)는 내부에 상기 중간플랜지형상 돌출부(27a)까지 이르는 후측급기로(後側給氣路)(27c-1)를 개방하는 동시에 후단의 죽순 형상의 접속부(27c-2)의 전방에 외측나사(27c-3)를, 또한 그 외측나사(27c-3)의 전방에 후측급기로(27c-1)부분에 연통하는 제1급기구멍(27c-4)을 뚫고, 전통부(27b)는 후방 리테이너(23)의 급기구(23a)에 연통하는 전측급기로(前側給氣路)(27b-1)를 개방하는 동시에 상기 중간플랜지형상 돌출부(27a)의 전방에 상기 전측급기로(27b-1)에 연통하는 제2급기구멍(27b-2)을 뚫고, 그 제2급기구멍(27b-2) 전방에 상기 중간플랜지형상 돌출부(27a)보다 약간 큰 직경으로 O-링을 끼운 전측플랜지형상 돌출부(27c-5)를 설치한 주지의 구조로 되어 있다.The air supply cylinder part 27 is a traditional part 27b and a back tube part 27c which are interrupted back and forth by an intermediate flange-shaped protrusion part 27a which terminates the inside and protrudes in a flange shape. Is integrally provided, and the rear cylinder portion 27c opens the rear side air supply passage 27c-1 that extends to the intermediate flange-shaped protrusion 27a therein, and at the same time, the bamboo shoot-shaped connecting portion at the rear end. The first air supply hole 27c-4 which communicates the outer screw 27c-3 in front of the 27c-2 and the rear air supply 27c-1 in front of the outer screw 27c-3. Through the opening, the traditional portion 27b opens the front side air supply passage 27b-1 communicating with the air supply port 23a of the rear retainer 23, and at the same time, The front of the second air supply hole 27b-2 communicating with the front side air supply passage 27b-1, and the diameter slightly larger than the intermediate flange-shaped protrusion 27a in front of the second air supply hole 27b-2. To O- A is sandwiched between the front side flange-shaped projecting portion (27c-5) by the structure of the known installation.

손잡이부(8)는 내통(內筒)(18)과 외통(外筒)(28)을 일체로 가지는 2중구조로 하고, 내통(18)과 외통(28)사이에 소음필터(38)를 장착하는 동시에 양단간의 전단을 개방하여, 상기 격벽(29)을 경계로 하는 후반부측 너트부재(9)의 외주면에 단차를 형성한 오목단부(39)에 그 외통(28)을 전진후퇴 가능하게 외측에서 끼워넣는 동시에, 상기 격벽(29)을 경계로 하는 후반부측 너트부재(9)내에 그 내통(18)을 여유있게 삽입하여 상기 구멍(29a) 및 그 삽입에 의한 너트부재(9) 후반부와의 공간(29c)을 이용하여 상기 출구와 내통(18) 및 외통(28) 사이로부터의 배기를 소음하여 외부로 배출하도록 되어 있고, 또한 그 내통(18)은 상기 외측나사(27c-3)에 대응하는 암나사(18a) 및 중간플랜지형상 돌출부(27a)의 후측 측면이 맞닿는 착좌단차면(18b)과 착좌단차면(18b)의 전방을 구성하는 확개통부(18c)를 구비하는 동시에, 손잡이부(8)를 회전하여 후퇴시킴으로써 중간플랜지형상 돌출부(27a)와 확개통부(18c) 내주면 사이에 형성된 간극(48)을 통해 제1급기구멍(27c-4)으로부터 제2급기구멍(27b-2)으로 공기가 공급되어 후방 리테이너(23)의 급기구(23a)에 급기하도록 되어 있다(도 1참조).The handle portion 8 has a double structure having an inner cylinder 18 and an outer cylinder 28 integrally, and a noise filter 38 is mounted between the inner cylinder 18 and the outer cylinder 28. At the same time, the front end of both ends is opened, and the outer cylinder 28 is recessed at the outer end surface of the rear half nut member 9 bounded by the partition 29 so that the outer cylinder 28 can be moved forward and backward. At the same time, the inner cylinder 18 is inserted into the rear half nut member 9 bounded by the partition wall 29 so that the space between the hole 29a and the latter half of the nut member 9 is inserted. An exhaust from the outlet, the inner cylinder 18 and the outer cylinder 28 is discharged to the outside using the 29c, and the inner cylinder 18 corresponds to the outer screw 27c-3. Expansion which constitutes the front of the seating step surface 18b and the seating step surface 18b where the rear side of the female screw 18a and the intermediate flange-shaped protrusion 27a abut. The first air supply hole 27c- is provided through the gap 48 formed between the intermediate flange-shaped protrusion 27a and the inner circumferential surface of the expanding cylinder portion 18c by having the cylinder portion 18c rotated and retracted. Air is supplied from the 4) to the second air supply hole 27b-2 to supply air to the air supply port 23a of the rear retainer 23 (see FIG. 1).

또한, 상기 손잡이부(8)는 제1급기구멍(27c-4) 전체가 확개통부(18c)에 임할때까지 후퇴하면 그 이상 후퇴되어도 밸브의 열리는 정도는 변하지 않고, 회전을 계속하면 빠져버린다.
이를 방지하기 위해, 상기 죽순 형상의 접속부(27c-2)에 밸브의 열리는 정도가 일정하게 된 시점에서 손잡이부(8)의 후단을 멈추는 분할링(58)이 급기용이음(7)의 후단부인 상기 접속부(27c-2)에 형성한 걸림홈(27'c-2)에 착탈가능하게 부착되어 있다.Further, the handle portion 8 is retracted until the entire first air supply hole 27c-4 reaches the expanding cylinder portion 18c, and even if the handle portion 8 is retracted, the opening degree of the valve does not change. .
In order to prevent this, the split ring 58 which stops the rear end of the handle 8 at the time when the opening degree of the valve becomes constant at the bamboo shoot-shaped connecting portion 27c-2 is the rear end of the air supply joint 7. It is detachably attached to the engaging groove 27'c-2 formed in the said connection part 27c-2.

상기 연마ㆍ연삭유닛(4)은 간단하게는 선단에 소망의 연마ㆍ연삭공구(100)를 교환 가능하게 하는 콜릿부(collet)(100a)를 구비하고, 회전축(14)을 전후 한쌍의 베어링부(24, 24)에서 회전가능하게 지지한 구조로 하고, 회전축(14)의 후단에 상기 회전자(2)의 축(2a)과 직선적으로 걸어맞추어 연결하는 걸어맞춤수단(34)을 구비하고 있다.The polishing / grinding unit 4 is simply provided with a collet 100a for exchanging a desired polishing / grinding tool 100 at the tip, and a pair of bearing portions before and after the rotating shaft 14. (24, 24) is rotatably supported, and a fastening means (34) is provided at the rear end of the rotating shaft (14) for linearly engaging and connecting the shaft (2a) of the rotor (2). .

이 걸어맞춤수단(34)은 연마ㆍ연삭유닛(4)의 회전축(14)의 후단에 회전자(2)의 축(2a)의 전단의 래버린스(labyrinth)(200)를 직선적으로 걸어맞추어 접속하는 커플링이음이고, 회전자(2)의 구동회전을 연마ㆍ연삭유닛(4)의 회전축(14)에 전달할 수 있다.The fastening means 34 linearly engages and connects the labyrinth 200 of the front end of the shaft 2a of the rotor 2 to the rear end of the rotary shaft 14 of the polishing / grinding unit 4. It is a coupling joint, and the drive rotation of the rotor 2 can be transmitted to the rotating shaft 14 of the grinding / grinding unit 4.

상세하게는, 도 3에 도시된 바와 같이 래버린스(200) 또는 회전축(14)의 어느 한쪽에 2개의 다리 형상의 접속편(34a, 34a)을 축방향으로 간격을 두어 돌출시키고, 다른쪽에 상기 접속편(34a, 34a)내에 삽입되는 걸어맞춤축부(44)를 설치하고, 접속편(34a, 34a)과 걸어맞춤축부(44)가 직선적으로 걸어맞춰지도록 되어 있다.Specifically, as shown in FIG. 3, two leg-shaped connecting pieces 34a and 34a are projected at an interval in the axial direction on either the labyrinth 200 or the rotary shaft 14, and the other side is the above. The engaging shaft portion 44 inserted into the connecting pieces 34a and 34a is provided so that the connecting pieces 34a and 34a and the engaging shaft portion 44 are linearly engaged.

참조부호 54는 전방 리테이너(53)와 연마ㆍ연삭공구 유닛(4)의 후측의 베어링부(24) 사이에 끼워 넣는 라이저 파이프(riser pipe)이다.Reference numeral 54 denotes a riser pipe sandwiched between the front retainer 53 and the bearing portion 24 on the rear side of the polishing / grinding tool unit 4.

이와 같이 구성된 본 실시예의 에어모터는 상기 제1돌기(17a)와 제2돌기(29b)와의 걸어맞춤 효과로 풀리지 않는 너트부재(9)의 체결상태를 유지한다.The air motor of this embodiment configured as described above maintains the fastening state of the nut member 9 which is not loosened by the engagement effect between the first protrusion 17a and the second protrusion 29b.

수리점검을 위해 분해하는 경우에는 분할링(58)을 제거하여 손잡이부(8)를 후퇴시켜 제거하고 너트부재(9)를 그 걸어맞춤 관계가 해제되도록 인위적으로 강제로 회전시켜 그 나사결합을 해제시킨다.When disassembling for repair, remove the split ring 58, retract the handle 8 to remove it, and artificially forcibly rotate the nut member 9 to release its engagement. Let's do it.

이로 인해 급기용이음(7)과 파이프형상의 케이싱(3)이 분리된다.As a result, the air supply joint 7 and the pipe-shaped casing 3 are separated.

또한, 복수의 베인(12), 회전자(2), 및 고정자(1)를 교환하는 경우에는 연마ㆍ연삭공구 유닛(4)을 그 케이싱(3)에서 제거하여 동 케이싱(3) 자체를 교환한다.In addition, when the plurality of vanes 12, the rotor 2, and the stator 1 are replaced, the polishing / grinding tool unit 4 is removed from the casing 3 to replace the casing 3 itself. do.

본 발명은 이상과 같이 구성하였기 때문에 다이캐스트 성형한 파이프 형상의 케이싱에 키, 세레이션, 스플라인 등과 같은 기능을 갖는 안내요철조와 외측나사를 후가공으로 실시할 수 있다.Since this invention is comprised as mentioned above, the guide concavo-convex and outer screws which have functions, such as a key, a serration, a spline, etc. can be performed to die-casting the pipe-shaped casing by post processing.

그로 인해, 별도의 나사형을 제작준비하고 그것을 형맞춤시에 설정하여 성형하는 것이 필요없으므로, 성형비용이 절감되고 저렴하게 제공할 수 있다.Therefore, it is not necessary to prepare and prepare a separate screw mold and to set it at the time of mold fitting, so that the molding cost can be reduced and provided at low cost.

또한, 제1돌기와 제2돌기의 걸어맞춤효과로 너트부재의 풀림이 방지되기 때문에, 종래와 같은 급기용이음을 파이프형상의 케이싱 후단측 내주면에 나사산형 형성한 내측나사에 나사결합한 후, 접착제로 고정하지 않아도 풀리지 않는 상태로 확실히 접속시킬 수 있고, 또한 접착제를 연화시켜 닦아낼 필요없이 너트부재를 회전시켜 해제하는 간단한 조작으로 급기용이음을 케이싱에서 제거하여 분해할 수 있다.In addition, since the nut member is prevented from loosening due to the engagement effect between the first protrusion and the second protrusion, the air supply joint is screwed into the inner thread formed in the threaded shape on the inner circumferential surface of the rear end of the pipe-like casing, and then the adhesive is applied with an adhesive. It can be securely connected without loosening even if it is not fixed, and the air supply joint can be removed from the casing and disassembled by a simple operation of rotating and releasing the nut member without the need to soften and wipe off the adhesive.

또한, 손잡이부의 후퇴량이 링에 충돌할 때까지의 길이로 규제되기 때문에, 후퇴량이 크면 밸브의 열리는 정도가 커지는 것으로 착각하여 사용자(비전문가를 포함)가 손잡이부를 크게 회전시켜도 손잡이부가 탈락하지 않고 사용하기 쉽다.In addition, since the retraction amount of the handle part is regulated by the length until it hits the ring, the retraction amount is large, and the opening degree of the valve is considered to be large. Therefore, even if a user (including a non-expert) rotates the handle part greatly, the handle part does not fall out. easy.

Claims (2)

복수의 베인을 구비한 회전자를 그 축중심과 고정자 내주 중심을 편심시켜 고정자내에 회전가능하게 끼워 넣고, 상기 고정자를 파이프형상의 케이싱내에 끼워 넣어 장착함과 아울러, 고정자와 케이싱 사이에 급기경로와 배기경로를 형성하고, 케이싱 후방부에 급기용이음을 설치하고, 상기 급기용이음 및 급기경로를 통해 고정자내에 압축공기를 압송하여 회전자를 회전시키는 에어모터에 있어서, 상기 케이싱의 후단측 외주면에 나사산을 형성하여 외측나사를 구비함과 아울러, 상기 후단측 내주면에 급기통부와 상기 급기통부에 연이어 설치되고 상기 급기통부보다 직경이 큰 선단부를 구비한 급기용이음의 상기 선단부를 회전불가능하게 하는 한편 직선적으로 출입하는 안내요철조를 설치하고, 상기 선단부의 급기통부측 후면의 동일원주 상에 복수개의 제1돌기를 형성하고, 상기 외측나사에 급기통부를 관통하는 구멍이 뚫린 너트부재를 전진후퇴 가능하게 나사결합하고, 상기 너트부재의 상기 제1돌기와의 대응면에 있어서의 동일 원주상에 상기 제1돌기에 눌러 걸어맞추는 제2돌기를 복수개 설치한 것을 특징으로 하는 에어모터.A rotor having a plurality of vanes is rotatably inserted in the stator by eccentricity between the shaft center and the stator inner circumference, and the stator is fitted into a pipe-shaped casing, and an air supply path between the stator and the casing is mounted. An air motor which forms an exhaust path, installs air supply joints at the rear of the casing, and feeds compressed air into the stator through the air supply joints and air supply paths to rotate the rotor on the outer peripheral surface of the rear end side of the casing. While forming a screw thread and having an outer thread, the tip end portion of the air supply joint having a tip portion larger in diameter than the air supply tube portion is provided on the rear circumferential side inner circumferential surface and connected to the air supply cylinder portion. A guide groove having a straight line in and out is provided, and is rested on the same circumference of the rear side of the air supply section of the tip portion. Two first projections, screwing a nut member having a hole penetrating the air supply port portion through the outer thread so as to be retracted forwardly, and forming the first projection on the same circumference of a surface corresponding to the first projection of the nut member. An air motor, characterized in that a plurality of second projections provided by pressing the first projection to engage with the first projection. 제1항에 있어서, 상기 급기용이음이 압축공기의 공급원에 연통되는 급기구멍을 구비하는 동시에, 상기 급기용이음에 나사결합시켜 전진에 의해 급기구멍을 닫는 한편 후퇴하여 상기 급기구멍의 열리는 정도를 조절하는 손잡이부를 구비하고, 급기용이음의 후단측에 손잡이부의 소정 이상의 후퇴를 저지하는 링을 착탈가능하게 설치한 것을 특징으로 하는 에어모터.The air supply joint according to claim 1, wherein the air supply joint includes an air supply hole communicating with a source of compressed air, and is screwed into the air supply joint to close the air supply hole by advancing and retreat to open the air supply hole. An air motor, comprising: a handle portion for adjustment; and a detachable ring disposed on a rear end side of the air supply joint to prevent a predetermined retraction of the handle portion.
KR1019990006484A 1998-02-27 1999-02-26 Air motor KR100575438B1 (en)

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JP10047790A JP3031671B2 (en) 1998-02-27 1998-02-27 Air motor
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AU2003244224A1 (en) * 2002-06-12 2003-12-31 Joong-Deog Choi An apparatus for generating of sound and rotating of light by air flow
US8556922B2 (en) * 2007-02-28 2013-10-15 Medtronic Ps Medical, Inc. Motor assembly for a powered surgical instrument
KR101304681B1 (en) * 2012-07-30 2013-09-06 주식회사 티엠씨 Deburring apparatus for processed metal product using air grinder

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KR900006866Y1 (en) * 1987-06-02 1990-08-02 노기배 Adjustable plagpole
KR940008814A (en) * 1992-10-22 1994-05-16 이대원 Tuning screw thread matching
WO1998002969A2 (en) * 1996-07-16 1998-01-22 Audiological Engineering Corporation Method and apparatus for improving effective signal to noise ratios in hearing aids
KR19990014953A (en) * 1995-05-25 1999-02-25 키어스 디 비티 Anti-rotation coupling mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900006866Y1 (en) * 1987-06-02 1990-08-02 노기배 Adjustable plagpole
KR940008814A (en) * 1992-10-22 1994-05-16 이대원 Tuning screw thread matching
KR19990014953A (en) * 1995-05-25 1999-02-25 키어스 디 비티 Anti-rotation coupling mechanism
WO1998002969A2 (en) * 1996-07-16 1998-01-22 Audiological Engineering Corporation Method and apparatus for improving effective signal to noise ratios in hearing aids

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