KR102172451B1

KR102172451B1 - air chipping hammer

Info

Publication number: KR102172451B1
Application number: KR1020190156320A
Authority: KR
Inventors: 김문석; 신세휘
Original assignee: 김문석; 신세휘
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-11-02

Abstract

The present invention relates to an air chipping hammer comprising: an air supply unit having a valve body in which a valve capable of opening and closing a front flow path formed from an air inlet to an air outlet is mounted; an air operation unit having a piston inside an operation body screw-coupled to the valve body to allow air supplied from the air outlet of the valve body to flow in, and reciprocating the piston by the supplied air; a striking unit having a tool reciprocated in connection with forward and backward motion of the piston by being connected to a tool chuck mounted in a striking housing screw-coupled to the operation body; and a loosening prevention unit coupled between the striking housing and the operation body to prevent the striking housing from being loosened from the operation body by vibrations caused by the forward and backward motion of the tool. According to such an air chipping hammer, screw loosening due to vibration of the operation body and the striking housing can be suppressed, a forward and backward stroke length can be easily adjusted, and the tool can be easily replaced.

Description

Air chipping hammer

본 발명은 에어 치핑 햄머에 관한 것으로서, 상세하게는 스트로크 길이 조정이 용이한 에어 치핑 햄머에 관한 것이다.The present invention relates to an air chipping hammer, and more particularly, to an air chipping hammer with easy stroke length adjustment.

최근 고압에어를 이용하여 공구를 왕복운동시키면서 고착된 이물질을 표면으로 분리하는 이물질 제거장치로서 에어치핑햄머가 이용되고 있다.Recently, an air chipping hammer has been used as a foreign material removal device that separates the fixed foreign material to the surface while reciprocating the tool using high-pressure air.

이러한 에어치핑햄머는 고압의 에어를 이용하여 단부에 장착된 공구가 짧은 시간에 왕복 운동하여 용접가공물 표면의 용접 비드 및 스케일 제거의 용도로 주로 사용되고 있고, 그 예가 국내 공개특허 제10-2013-0138074호에 개시되어 있다.These air chipping hammers are mainly used for the purpose of removing welding beads and scale on the surface of a welded workpiece by reciprocating a tool mounted at the end using high-pressure air in a short period of time, and examples thereof are Korean Patent Publication No. 10-2013-0138074. It is disclosed in the issue.

상기 에어치핑햄머는 밸브몸체와 작동몸체가 나사결합방식으로 고정결합되는 구조로 되어 있어 사용과정에서 발생되는 진동에 의해 나사결합이 풀릴 수 있으며 공구의 진퇴 길이 즉, 스트로크 길이를 용도에 따라 조정할 수 없는 단점이 있다.The air chipping hammer has a structure in which the valve body and the operating body are fixedly coupled by a screw connection method, so that the screw connection can be released by the vibration generated during the use process, and the advance and retreat length of the tool, that is, the stroke length can be adjusted according to the application There are no drawbacks.

본 발명은 상기와 같은 문제점을 개선하기 위하여 창안된 것으로서, 진동에 의한 나사풀림을 억제하면서도 공구의 진퇴 길이를 용이하게 조정할 수 있도록 된 에어 치핑 햄머를 제공하는데 그 목적이 있다.An object of the present invention is to provide an air chipping hammer capable of easily adjusting the advancing and retreating length of a tool while suppressing screw loosening due to vibration, as invented to improve the above problems.

상기의 목적을 달성하기 위하여 본 발명에 따른 에어 치핑 햄머는 일단에 에어를 유입받을 수 있는 에어 유입구가 형성되어 있고, 상기 에어 유입구로부터 에어 토출구로 이어지는 선단 유로를 개폐할 수 있는 밸브가 장착된 밸브몸체를 갖는 에어공급부와; 상기 밸브몸체의 에어토출구에서 공급되는 에어가 유입될 수 있게 상기 밸브몸체와 나사결합되는 작동몸체의 내부에 피스톤이 구비되어 상기 에어공급부로부터 공급된 에어에 의해 상기 피스톤을 왕복작동 되게 하는 에어작동부와; 상기 에어작동부의 상기 작동몸체에 나사결합되는 타격하우징과, 상기 타격하우징 내에 장착된 공구척과 상기 공구척에 연결되어 상기 피스톤의 진퇴작동에 연동되어 왕복운동되는 공구를 갖는 타격부와; 상기 피스톤과 상기 밸브몸체 사이에 설치된 피스톤 지지부재;를 구비하고, 상기 타격하우징과 상기 작동몸체 사이에 결합되어 상기 공구의 진퇴 작동에 의한 진동에 의해 상기 타격하우징이 상기 작동몸체에 대해 풀리는 것을 방지하는 풀림방지부;를 구비한다.In order to achieve the above object, the air chipping hammer according to the present invention has an air inlet port through which air can be introduced at one end, and a valve equipped with a valve capable of opening and closing the front end flow path leading from the air inlet to the air discharge port. An air supply unit having a body; An air operating unit that has a piston inside the operating body that is screwed with the valve body so that air supplied from the air discharge port of the valve body can be introduced to reciprocate the piston by air supplied from the air supply unit. Wow; A striking part having a striking housing screwed to the operating body of the air actuating part, a tool chuck mounted in the striking housing and a tool connected to the tool chuck and reciprocating in connection with the advancing and retreating operation of the piston; A piston support member installed between the piston and the valve body; and is coupled between the hitting housing and the operating body to prevent the hitting housing from being released from the operating body by vibrations caused by the advance and retreat operation of the tool It has a loosening prevention unit;

바람직하게는 상기 타격하우징의 상기 작동몸체와 나사결합되는 종단면에는 상기 작동몸체로부터 멀어지는 방향으로 인입된 걸이홈이 원주방향을 따라 상호 이격되어 다수 형성되어 있고, 상기 작동몸체의 나사결합되는 부분을 벗어난 외주면에는 외경이 확장되는 방향으로 돌출된 돌출턱상에 외경이 작아지는 방향으로 인입된 구속지지홈이 형성되어 있고, 상기 풀림방지부는 상기 작동몸체의 외주면에 결합되어 상기 구속지지홈 및 상기 걸이홈에 걸쳐 삽입되는 고정핀을 갖는 바인딩 부재;를 구비한다.Preferably, a plurality of hook grooves drawn in a direction away from the operating body are formed in a circumferential direction in a longitudinal section screwed with the operating body of the striking housing, and a plurality of hook grooves are formed that are spaced apart from each other along the circumferential direction, and are outside the screwed portion of the operating body. On the outer circumferential surface, a restraining support groove is formed on a protruding jaw that protrudes in a direction in which the outer diameter is extended, and the locking support groove is inserted in a direction in which the outer diameter decreases, and the loosening prevention part is coupled to the outer peripheral surface of the operating body to the restraining support groove and the hook groove. It includes; a binding member having a fixing pin inserted over.

또한, 상기 밸브몸체의 상기 에어유입구 반대편의 타단으로부터 내측으로 인입되어 상기 작동몸체와 나사결합되게 내주면에 나사산이 형성된 제1결합부분과, 상기 제1결합부분으로부터 상기 에어 유입구를 향하는 방향으로 연장되어 상기 피스톤 지지부재의 일부가 수용되되 상기 피스톤 지지부재의 외경보다 확장된 내경을 갖으며 상기 에어 토출구로부터 배출되는 에어가 임시 충진되는 메인버퍼공간이 형성된 메인 버퍼부분을 구비하고, 상기 메인 버퍼공간의 상기 피스톤 지지부재와 대향되는 내부 바닥면에는 상기 피스톤 지지부재에 의해 점유되지 않은 영역을 포함하여 상기 메인 버퍼공간과 상기 선단 유로를 상호 연통하게 형성되되 상기 선단유로를 향하는 방향으로 인입되어 상기 메인 버퍼공간보다 작은 내경을 갖게 형성된 서브 버퍼공간이 마련된다.In addition, a first engaging portion of the valve body with a thread formed on an inner circumferential surface of the valve body, which is drawn inward from the other end opposite to the air inlet and is screwed with the operating body, and extends from the first engaging portion toward the air inlet. A portion of the piston support member is accommodated, has an inner diameter that is larger than the outer diameter of the piston support member, and has a main buffer portion formed with a main buffer space in which air discharged from the air discharge port is temporarily filled, and the main buffer space The main buffer space and the front end flow path are formed in communication with each other, including an area not occupied by the piston support member, on the inner bottom surface facing the piston support member, and are introduced in a direction toward the front end flow path, and the main buffer A sub-buffer space formed to have an inner diameter smaller than the space is provided.

더욱 바람직하게는 상기 피스톤은 제1외경을 갖는 피스톤 몸체와 상기 피스톤 몸체의 선단에서 상기 제1외경보다 작은 제2외경을 갖게 연장된 피스톤로드를 구비하고, 상기 피스톤로드의 외주면에 흡배기공이 형성되어 있고, 상기 흡배기공에서 상기 피스톤로드 내부를 거쳐 상기 피스톤몸체의 단부로 이어지는 유로공이 형성되어 있으며, 상기 작동몸체는 상기 피스톤몸체가 진퇴되게 상기 피스톤 지지부재가 진입되는 일단으로부터 제1내경을 갖게 길이방향을 따라 연장된 제1중단 수용부분과, 상기 제1중단 수용부분의 타단에서 상기 제1내경보다 확장된 제2내경을 갖으며 연장된 제2중단 수용부분과, 상기 제2중단 수용부분으로부터 상기 피스톤로드의 진퇴는 허용하되 상기 피스톤몸체의 진퇴는 차단하도록 상기 제1내경보다 작은 제3내경을 갖게 연장된 제3중단 수용부분과, 상기 제3중단 수용부분으로부터 상기 제3내경보다 확장된 제4내경을 갖게 연장된 제4중단 수용부분과, 상기 제4중단 수용부분으로부터 사기 제4내경보다 확장된 내경을 갖게 연장된 제5중단 수용부분을 갖게 형성되어 있고, 상기 메인 버퍼공간에 충진된 에어가 상기 제2중단 수용부분에 공급될 수 있게 상기 제1중단수용부분의 노출된 측면으로부터 길이방향을 따라 상기 제2중단 수용부분과 연통되게 형성된 에어 유도홀이 형성되어 있고, 상기 공구척은 상기 공구가 진입되는 진입홈을 갖되 종단에 사각형상의 고정홈이 형성되어 있고 외주면 선단에 나사산이 형성되어 있고 외형이 사각형상으로 면처리되어 이탈방지볼이 안착될 수 있는 볼안착홀이 형성된 공구 삽입부분과, 상기 공구삽입부분으로부터 연장되되 상기 공구 삽입부분보다 확장된 외경을 갖는 링부분과, 상기 링부분보다 작은 외경을 갖으며 상기 링부분으로부터 멀어지는 방향으로 연장되어 상기 피스톤 로드와 대향되는 연장봉부분을 갖는 진퇴 연동체와; 상기 연장봉 부분 외측에 삽입되어 진퇴가능하게 형성되되 상기 제4중단 수용부분으로의 진입은 차단되되 상기 제5중단 수용부분에 안착될 수 있는 외경을 갖는 후퇴차단링부분을 갖되 상기 제4중단 수용부분으로부터 상기 타격 하우징으로의 에어배출이 가능하게 내경이 작아지는 방향으로 인입되되 원주방향으로 상호 이격되게 형성된 공기 안내홈을 갖는 진퇴 가이드체와; 상기 타격하우징 외부로 노출된 상기 공구삽입부분과 나사결합되며 상기 공구가 관통되게 삽입되는 관통홀이 형성되어 있고, 외주면에서 상기 관통홀로 연통되는 수직홀이 형성된 선단 캡과; 상기 타격하우징 내에서 상기 진퇴 연동체의 상기 링부분 사이에서 탄성력을 인가하도록 설치된 스프링과; 상기 수직홀에 나사결합되어 상기 관통홀내로 입출되며 상기 공구를 가압고정하며 상단에 하방으로 인입된 회전억제 결속홈이 형성된 공구밀착볼트와; 상기 선단캡에 상기 수직홀을 경유하는 방향으로 원주방향을 따라 내측으로 인입되게 형성된 끼움홈에 삽입되어 상기 공구밀착볼트의 결속홈에 걸리도록 결합된 회전억제 탄성링;을 구비한다.More preferably, the piston includes a piston body having a first outer diameter and a piston rod extending from a tip of the piston body to have a second outer diameter smaller than the first outer diameter, and an intake and exhaust hole is formed on the outer peripheral surface of the piston rod. And a flow path hole leading from the intake and exhaust hole to the end of the piston body through the inside of the piston rod, and the working body has a first inner diameter from one end to which the piston support member enters so that the piston body moves forward and backward. A first stop receiving portion extending along the direction, a second stop receiving portion extending at the other end of the first stop receiving portion and having a second inner diameter that is larger than the first inner diameter, and from the second stop receiving portion A third stop receiving portion extending to have a third inner diameter smaller than the first inner diameter so as to allow the advance and retreat of the piston rod while blocking the advance and retreat of the piston body, and a third stop receiving portion extending from the third stop receiving portion to the third inner diameter. It is formed to have a fourth stop receiving portion extending to have a fourth inner diameter, and a fifth stop receiving portion extending from the fourth stop receiving portion to have an inner diameter that is larger than the fourth inner diameter, and filling the main buffer space An air guide hole formed to communicate with the second stop receiving portion along a longitudinal direction from the exposed side of the first stop receiving portion so that the resulting air can be supplied to the second stop receiving portion is formed, and the tool chuck The tool has an entry groove into which the tool enters, but has a rectangular fixing groove at the end, a screw thread is formed at the tip of the outer circumferential surface, and a ball seating hole is formed in which the departure prevention ball can be seated because the outer surface is treated in a square shape. An insertion portion, a ring portion extending from the tool insertion portion and having an outer diameter larger than the tool insertion portion, and an extension rod portion having an outer diameter smaller than the ring portion and extending in a direction away from the ring portion to face the piston rod. Having an advancing linkage; It is inserted into the outside of the extension rod portion and formed so as to move forward and backward, and has a retraction blocking ring portion having an outer diameter that can be seated in the fifth stop receiving portion while blocking entry into the fourth stop receiving portion, the fourth stop receiving portion An advancing and retreating guide body having an air guide groove which is introduced in a direction in which an inner diameter is decreased so as to allow air discharge from the impact housing to be discharged from, but is spaced apart from each other in a circumferential direction; A tip cap that is screwed with the tool insertion portion exposed to the outside of the hitting housing, has a through hole through which the tool is inserted, and has a vertical hole communicating with the through hole from an outer circumferential surface; A spring installed to apply an elastic force between the ring portions of the advancing and retreating interlocking body in the striking housing; A tool contact bolt which is screwed into the vertical hole, enters and exits into the through hole, pressurizes the tool, and has a rotation inhibiting binding groove drawn downward at an upper end; And a rotation-restraining elastic ring inserted into a fitting groove formed to be inserted inward along a circumferential direction in a direction passing through the vertical hole in the tip cap and coupled to be caught in the binding groove of the tool contact bolt.

본 발명에 따른 에어 치핑 햄머에 의하면, 작동몸체와 타격하우징의 진동에 의한 나사풀림을 억제시킬 수 있고, 진퇴 스트로크 길이를 용이하게 조정할 수 있으며, 공구의 교체가 용이한 장점을 제공한다. According to the air chipping hammer according to the present invention, it is possible to suppress the screw loosening due to vibration of the operating body and the impact housing, it is possible to easily adjust the advance and retreat stroke length, and it provides an advantage of easy tool replacement.

도 1은 본 발명에 따른 에어 치핑 햄머를 나타내 보인 사시도이고,
도 2는 도 1의 에어 치핑 햄머를 분해하여 도시한 분해 사시도이고,
도 3은 도 1의 에어 치핑 햄머의 결합단면도이다.1 is a perspective view showing an air chipping hammer according to the present invention,
2 is an exploded perspective view showing an exploded air chipping hammer of FIG. 1,
3 is a cross-sectional view of the air chipping hammer of FIG. 1.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예에 따른 에어 치핑 햄머를 더욱 상세하게 설명한다.Hereinafter, an air chipping hammer according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 에어 치핑 햄머를 나타내 보인 사시도이고, 도 2는 도 1의 에어 치핑 햄머를 분해하여 도시한 분해 사시도이고, 도 3은 도 1의 에어 치핑 햄머의 결합단면도이다.1 is a perspective view showing an air chipping hammer according to the present invention, FIG. 2 is an exploded perspective view showing the air chipping hammer of FIG. 1 by exploding, and FIG. 3 is a combined cross-sectional view of the air chipping hammer of FIG.

도 1 내지 도 3을 참조하면, 본 발명에 따른 에어 치핑 햄머(100)는 에어공급부(110), 에어작동부(130) 및 타격부(150)를 구비한다.1 to 3, the air chipping hammer 100 according to the present invention includes an air supply unit 110, an air operation unit 130, and a striking unit 150.

에어 공급부(110)는 일단에 에어를 유입받아 에어작동부(130)에 공급하며 에어 작동부(130)와 결합 및 분리될 수 있게 형성되어 있다.The air supply unit 110 receives air at one end and supplies it to the air operation unit 130 and is formed to be coupled and separated from the air operation unit 130.

에어공급부(110)는 밸브몸체(112), 밸브(121), 레버(125)를 구비한다.The air supply unit 110 includes a valve body 112, a valve 121, and a lever 125.

밸브몸체(112)는 일단에 에어를 유입받을 수 있는 에어 유입구(112a)가 형성되어 있고, 내부에 에어 유입구(112a)로부터 타측에 형성된 에어 토출구(112b)로 이어지는 선단 유로(112c)가 형성되어 있다.The valve body 112 has an air inlet 112a through which air can be introduced at one end, and an end flow passage 112c leading from the air inlet 112a to the air outlet 112b formed on the other side is formed therein. have.

밸브몸체(112)를 에어의 이동경로 및 결합구조에 따라 설명의 편의를 위해 구분하면, 밸브장착부분(112), 제1결합부분(114), 메인 버퍼부분(115)으로 되어 있다.When the valve body 112 is divided for convenience of description according to the movement path of the air and the coupling structure, the valve body 112 includes a valve mounting portion 112, a first coupling portion 114, and a main buffer portion 115.

밸브장착부분(112)은 에어유입구(112a)가 형성된 부분으로부터 메인 버퍼부분(115)까지 연장된 부분으로 밸브(121)가 장착되는 영역을 제공하고, 에어 유입구(112a)로부터 밸브(121)를 경유하여 선단유로(112c) 및 후술되는 서브 버퍼공간(113)이 형성된 부분에 해당하며 선단유로(112c)의 종단이 에어토출구(112b)가 된다. The valve mounting portion 112 is a portion extending from the portion where the air inlet 112a is formed to the main buffer portion 115 and provides an area where the valve 121 is mounted, and the valve 121 is removed from the air inlet 112a. This corresponds to a portion in which the front end passage 112c and the sub-buffer space 113 to be described later are formed, and the end of the end passage 112c becomes the air discharge port 112b.

도시되지는 않았지만 에어유입구(112a)에는 에어 공급호수와 결합을 지원하는 결합소켓이 장착된다.Although not shown, the air inlet 112a is equipped with a coupling socket that supports coupling with the air supply lake.

제1결합부분(114)은 밸브몸체(112)의 에어유입구(112a) 반대편의 타단으로부터 내측으로 인입되어 작동몸체(132)와 나사결합되게 내주면에 나사산이 형성된 부분이다.The first coupling portion 114 is a portion with a thread formed on the inner circumferential surface of the valve body 112 so as to be drawn in from the other end opposite to the air inlet 112a and screwed with the operating body 132.

메인 버퍼부분(115)은 제1결합부분(114)의 종단으로부터 에어 유입구(112b)를 향하는 방향으로 연장되어 후술되는 피스톤 지지부재(145)의 일부가 수용되되 피스톤 지지부재(145)의 외경보다 확장된 내경을 갖으며 에어 토출구(112b)로부터 배출되는 에어가 임시 충진되는 메인버퍼공간(115a)을 형성한다.The main buffer portion 115 extends in a direction from the end of the first coupling portion 114 toward the air inlet 112b to accommodate a portion of the piston support member 145 to be described later, but is less than the outer diameter of the piston support member 145 A main buffer space 115a having an expanded inner diameter and in which air discharged from the air outlet 112b is temporarily filled is formed.

여기서, 메인 버퍼공간(115a)을 형성하는 메인 버퍼부분(115)의 피스톤 지지부재(145)와 대향되는 내부 바닥면(116)에는 피스톤 지지부재(145)에 의해 점유되지 않은 영역을 포함하여 메인 버퍼공간(115a)과 선단 유로(112b)를 상호 연통하게 형성되되 선단유로(112c)를 향하는 방향으로 인입되어 메인 버퍼공간(115a)보다 작은 내경을 갖되 선단유로(112c)보다 확장된 내경을 갖게 형성된 서브 버퍼공간(113)과 연통되게 형성되어 있다.Here, the inner bottom surface 116 facing the piston support member 145 of the main buffer portion 115 forming the main buffer space 115a includes an area not occupied by the piston support member 145 The buffer space 115a and the front end passage 112b are formed in communication with each other, and are introduced in a direction toward the front end passage 112c to have an inner diameter smaller than the main buffer space 115a, but have an inner diameter that is larger than the front end passage 112c. It is formed to communicate with the formed sub-buffer space 113.

이러한 메인 버퍼공간(115a)과 서브 버퍼공간(113)은 작동 개시 전에 공기가 충진된 챔버 공간을 형성할 수 있어 작동이 개시되면 메인 버퍼공간(115a)에 충진된 공기가 바로 공급될 수 있어 피스톤(136)의 작동 지연을 최소화 할 수 있다.The main buffer space 115a and the sub-buffer space 113 can form a chamber space filled with air before starting the operation, so that when the operation is started, the air filled in the main buffer space 115a can be directly supplied to the piston. The delay in operation of (136) can be minimized.

밸브(121)는 수직상으로 외경차이를 갖게 형성되어 선단 유로(112c)를 승하강에 의해 개폐할 수 있게 장착되어 있다.The valve 121 is vertically formed to have a difference in outer diameter and is mounted so as to open and close the tip flow path 112c by elevating and lowering.

밸브(121)는 밸브몸체(112)에 결합되는 마감캡(123) 내에 수용된 스프링(124)에 지지되어 상방으로 노출된 돌출구(112d)를 통해 돌출되게 장착되어 선단유로(112c)를 폐쇄하며, 힌지(127)를 통해 회동될 수 있게 밸브몸체(112)에 장착된 레버(125)의 하강 간섭작동에 의해 하강시 선단유로(112c)를 개방하도록 되어 있다.The valve 121 is supported by a spring 124 accommodated in the closing cap 123 coupled to the valve body 112 and is mounted to protrude through a protrusion 112d exposed upward to close the front end flow path 112c, The front end flow path 112c is opened when descending by the downward interference operation of the lever 125 mounted on the valve body 112 so that it can be rotated through the hinge 127.

에어 작동부(130)는 밸브몸체(112)의 에어토출구(112b)에서 토출되어 메인 버퍼공간(115a)을 통해 공급되는 에어가 유입될 수 있게 밸브몸체(112)의 제1결합부분(114)과 나사결합되는 작동몸체(132)의 내부에 피스톤(136)이 구비되어 에어공급부(110)로부터 공급된 에어에 의해 피스톤(136)을 왕복작동 되게 한다.The air operation unit 130 is the first coupling portion 114 of the valve body 112 so that air discharged from the air discharge port 112b of the valve body 112 and supplied through the main buffer space 115a can be introduced. A piston 136 is provided inside the operating body 132 that is screwed with the piston 136 to reciprocate the piston 136 by the air supplied from the air supply unit 110.

에어 작동부(130)는 작동몸체(132), 피스톤(136), 피스톤 지지부재(145)를 구비한다.The air operating unit 130 includes an operating body 132, a piston 136, and a piston support member 145.

작동몸체(132)는 일단이 밸브몸체(112)의 제1결합부분(114)과 나사결합되며 타단은 후술되는 타격하우징(152)과 나사결합될 수 있게 되어 있고, 전후방으로 연통된 수용공간을 갖는 구조로 되어 있다.The operating body 132 has one end screwed with the first coupling portion 114 of the valve body 112, and the other end is capable of being screwed with the hitting housing 152 to be described later, and a receiving space communicated in the front and rear directions. It has a structure.

작동몸체(132)를 수용공간의 내경 차이를 기준으로 구분하면, 제1 내지 제5중단 수용부분(132a 내지 132e)으로 구분할 수 있다.When the operating body 132 is divided based on the difference in the inner diameter of the receiving space, it can be divided into first to fifth interrupted receiving portions 132a to 132e.

제1중단 수용부분(132a)는 피스톤몸체(136b)가 진퇴되게 피스톤 지지부재(145)가 진입되는 일단으로부터 제1내경을 갖게 길이방향을 따라 연장된 부분이다. 제1중단 수용부분(132a)에는 메인 버퍼공간(115a)에 충진된 에어가 후술되는 제2중단 수용부분(132b)에 공급될 수 있게 메인 버퍼공간(115a)에 노출된 측면으로부터 길이방향을 따라 제2중단 수용부분(132b)과 연통되게 형성된 에어 유도홀(134)이 형성되어 있다.The first stop receiving portion 132a is a portion extending along the longitudinal direction with a first inner diameter from one end to which the piston support member 145 enters so that the piston body 136b advances and retreats. From the side exposed to the main buffer space 115a so that the air filled in the main buffer space 115a can be supplied to the second stop receiving part 132b, which will be described later, the first stop receiving part 132a An air guide hole 134 formed to communicate with the second stop receiving portion 132b is formed.

제2중단 수용부분(132b)는 제1중단 수용부분(132a)의 타단에서 제1내경보다 확장된 제2내경을 갖게 연장된 중단 충진공간(132b1)을 갖게 형성되어 있다. 제2중단 수용부분(132b)의 중단 충진공간(132b1)은 앞서 설명된 바와 같이 메인 버퍼공간(115a)과 연통되게 제1중단 수용부분(132a)에 형성된 에어유도홀(134)과 연통되게 형성되어 있다.The second stop receiving portion 132b is formed to have an extended middle filling space 132b1 at the other end of the first stop receiving portion 132a to have a second inner diameter that is larger than the first inner diameter. The stop filling space 132b1 of the second stop receiving part 132b is formed to communicate with the air guide hole 134 formed in the first stop receiving part 132a to communicate with the main buffer space 115a as described above. Has been.

제3중단 수용부분(132c)는 제2중단 수용부분(132b)으로부터 피스톤로드(136a)의 진퇴는 허용하되 피스톤몸체(136b)의 진퇴는 차단하도록 제1내경보다 작은 제3내경을 갖게 연장된 부분이다.The third stop receiving portion (132c) is extended to have a third inner diameter smaller than the first inner diameter so as to allow the advance and retreat of the piston rod (136a) from the second stop receiving portion (132b), but to block the advance and retreat of the piston body (136b). Part.

제4중단 수용부분(132d)는 제3중단 수용부분(132c)으로부터 제3내경보다 확장된 제4내경을 갖게 연장된 부분을 갖게 형성된 부분이다. 제4중단 수용부분(132d)의 타격 하우징(152)과 결합되는 선단은 제4내경보다 확장되게 라운딩 처리될 수 있다. 제4중단 수용부분(132d)의 외주면에는 선단으로부터 타격 하우징(152)과 나사결합될 수 있게 나사선이 후방으로 연장되게 형성되어 있고, 나사결합되는 부분에 해당하는 나사선 형성부분을 벗어나 제3중단 수용부분(132c)을 향하는 방향을 따라 외경이 확장되는 방향으로 돌출된 돌출턱(135)이 외주면을 따라 링형태로 형성되어 있다. 돌출턱(135)에는 외경이 작아지는 방향으로 인입된 구속지지홈(135a)이 수평상으로 형성되어 있다. 또한, 제4중단 수용부분(132d)의 외주면에는 돌출턱(135)에 인접되어 하방으로 인입된 결착홈(132f)이 형성되어 있다.The fourth stop receiving portion 132d is a portion formed to have a portion extending from the third stop receiving portion 132c to have a fourth inner diameter that is larger than the third inner diameter. A front end coupled to the hitting housing 152 of the fourth stop receiving portion 132d may be rounded to be larger than the fourth inner diameter. The outer circumferential surface of the fourth stop receiving portion (132d) is formed to extend rearward so that it can be screwed with the hitting housing 152 from the front end, and the third stop is accommodated outside the threaded portion corresponding to the portion to be screwed. A protruding jaw 135 protruding in a direction in which the outer diameter is expanded along the direction toward the portion 132c is formed in a ring shape along the outer circumferential surface. The protruding jaw 135 is formed with a constraining support groove 135a drawn in a direction in which the outer diameter decreases in a horizontal shape. In addition, a fastening groove 132f adjacent to the protruding jaw 135 and drawn downward is formed on the outer circumferential surface of the fourth stop receiving portion 132d.

제5중단 수용부분(132e)은 제4중단 수용부분(132d)으로부터 전방으로 연장되되 제4내경보다 확장된 제5내경을 갖게 연장된 부분이며 후술되는 진퇴 가이드체(165)의 일부가 안착되어 후퇴를 억제할 수 있게 지원한다.The fifth stop receiving portion 132e is a portion extending forward from the fourth stop receiving portion 132d but has a fifth inner diameter that is larger than the fourth inner diameter, and a part of the advance and retreat guide body 165 to be described later is seated. Support to curb retreat.

피스톤(136)은 제1외경을 갖는 피스톤 몸체(136b)와, 피스톤 몸체(136b)의 선단에서 제1외경보다 작은 제2외경을 갖게 연장된 피스톤로드(136a)로 되어 있다. 또한, 피스톤로드(136a)의 외주면에 흡배기공(137)이 형성되어 있고, 흡배기공(137)에서 피스톤로드(136a) 내부를 피스톤몸체(136b)의 단부로 이어지는 유로공(138)이 형성되어 있다.The piston 136 includes a piston body 136b having a first outer diameter, and a piston rod 136a extending from a tip of the piston body 136b to a second outer diameter smaller than the first outer diameter. In addition, an intake and exhaust hole 137 is formed on the outer circumferential surface of the piston rod 136a, and a flow path hole 138 connecting the inside of the piston rod 136a to the end of the piston body 136b from the intake and exhaust hole 137 is formed. have.

피스톤 지지부재(145)는 피스톤(136)과 밸브몸체(112) 사이에 설치되어 제1중단 수용부분(132a)의 피스톤이 진퇴되는 일단을 폐쇄시키고, 피스톤(136)의 후퇴시 밸브몸체(112)로 인가되는 충격을 저감시킬 수 있게 되어 있다.The piston support member 145 is installed between the piston 136 and the valve body 112 to close one end of the first stop receiving portion 132a through which the piston moves forward and backward, and when the piston 136 retreats, the valve body 112 ) To reduce the applied impact.

피스톤 지지부재(145)를 구분하면, 원형밀착부분(145a), 지지부분(145b) 및 완충부분(145c)로 되어 있다.The piston support member 145 is divided into a circular contact portion 145a, a support portion 145b, and a buffer portion 145c.

원형밀착부분(145a)은 제1중단 수용부분(132a)에 삽입되어 피스톤의 진퇴공간을 폐쇄시킬 수 있게 원판형상으로 형성된 부분이다.The circular contact portion 145a is a portion formed in a disk shape so as to be inserted into the first stop receiving portion 132a to close the advance and retreat space of the piston.

지지부분(145b)는 원형밀착부분(145a)보다 확장된 외경을 갖게 형성되어 제1중단 수용부분(132a)으로의 진입을 차단하며 후술되는 완충부분(145c)이 결합되는 영역을 제공한다.The support portion 145b is formed to have an outer diameter larger than that of the circular contact portion 145a to block entry into the first stop receiving portion 132a and provide a region to which the buffer portion 145c described later is coupled.

완충부분(145c)은 지지부분(145b)에 원판형태로 연장되게 결합된 부분이며 충격을 완화시킬 수 있는 탄성적 변형이 가능한 합성수지 소재로 형성될 수 있다.The buffer portion 145c is a portion coupled to the support portion 145b so as to extend in the form of a disk, and may be formed of a synthetic resin material capable of elastically deformable to mitigate an impact.

이러한 에어 작동부(130)는 에어가 에어 유도홀(134)을 통해 제2중단 수용부분(132b)에 에어가 공급되면 피스톤(136)이 후방으로 가압되어 후방측으로 이동된다. 또한, 후방으로 피스톤(136)이 이동되면 흡배기공(137)이 제2중단 수용부분(132b)과 연통되면서 에어가 흡배기공(137) 및 유로공(139)을 통해 후방으로 유입되며 압력이 높아지면 피스톤(136)이 가압되어 전방측으로 이동되고, 흡배기공(137)이 제3중단 수용부분(132c)의 내측으로 노출되면 피스톤(136)의 후방에 채워진 에어가 제3중단 수용부분(132d)의 내부공간으로 배기된다.When air is supplied to the second stop receiving portion 132b through the air induction hole 134, the piston 136 is pressed backward and moved to the rear side. In addition, when the piston 136 is moved to the rear, the intake and exhaust holes 137 communicate with the second stop receiving portion 132b, so that air flows into the rear through the intake and exhaust holes 137 and the flow path hole 139, and the pressure is high. When the ground piston 136 is pressed and moved to the front side, and the intake and exhaust holes 137 are exposed to the inside of the third stop receiving part 132c, the air filled in the rear of the piston 136 is transferred to the third stop receiving part 132d. It is exhausted to the inner space of.

이러한 피스톤(136)의 왕복과정은 반복되며 에어 가압이 반복적으로 이루어진다.The reciprocating process of the piston 136 is repeated, and air pressure is repeatedly performed.

타격부(150)는 피스톤(136)의 왕복 진퇴에 연동되어 공구(10)를 진퇴시킬 수 있게 되어 있다.The striking part 150 is interlocked with the reciprocating advance and retreat of the piston 136 to allow the tool 10 to advance and retreat.

타격부(150)는 에어작동부(130)의 작동몸체(132)에 나사결합되는 타격하우징(152)과, 타격하우징(152) 내에 장착된 공구척(160)과, 공구척(160)에 연결되어 피스톤(136)의 진퇴작동에 연동되어 왕복운동되는 공구(10)를 구비한다.The striking part 150 is a striking housing 152 screwed to the operating body 132 of the air operating part 130, a tool chuck 160 mounted in the striking housing 152, and the tool chuck 160 It is connected to and is provided with a tool 10 that reciprocates in connection with the advance and retreat operation of the piston 136.

타격하우징(152)은 전후방으로 관통되게 형성된 수용공간 내에 공구척(160)의 요소를 수용할 수 있게 되어 있고, 일단은 작동몸체(132)와 결합된다. 타격하우징(152)의 작동몸체(132)와 나사 결합되는 종단면에는 작동몸체(132)로부터 멀어지는 방향으로 인입된 걸이홈(153)이 원주방향을 따라 상호 이격되어 다수 형성되어 있다. The striking housing 152 is capable of accommodating the elements of the tool chuck 160 in the accommodating space formed to penetrate forward and backward, and one end is coupled to the operating body 132. A plurality of hook grooves 153 inserted in a direction away from the operating body 132 are formed in a longitudinal section that is screwed with the operating body 132 of the hitting housing 152 to be spaced apart from each other along the circumferential direction.

타격하우징(152)을 구분하면, 작동몸체(132)와 나사결합되게 내주면에 나사선이 형성된 제2결합부분(152a)과 제2결합부분(152a)으로부터 전방으로 제2결합부분(152a)보다 작은 내경으로 연장된 제1수용부분(152b)과, 제1수용부분(152b)로부터 전방으로 연장되되 제1수용부분(152b)보다 작은 내경을 갖되 사각형상의 단면으로 연장된 제2수용부분(152c) 및 제2수용부분(152c)으로부터 전방으로 연장되되 제2수용부분(152c)의 내경보다 확장된 원형의 내경을 갖는 제3수용부분(152d)을 갖는 구조로 되어 있다.When the striking housing 152 is divided, the second coupling portion 152a and the second coupling portion 152a formed with a thread on the inner circumferential surface so as to be screwed with the operating body 132 are forwardly smaller than the second coupling portion 152a. A first receiving portion 152b extending to an inner diameter, and a second receiving portion 152c extending forward from the first receiving portion 152b and having an inner diameter smaller than the first receiving portion 152b but extending in a rectangular cross section And a third receiving portion 152d extending forward from the second receiving portion 152c and having a circular inner diameter that is larger than the inner diameter of the second receiving portion 152c.

제2수용부분(152c)에는 제1수용부분(152b)에 충진된 에어를 제3수용부분(152d) 외부로 배출시킬 수 있게 원주방향을 따라 복수개의 관통홀(154)이 형성되어 있다.A plurality of through-holes 154 are formed in the second receiving portion 152c along the circumferential direction to discharge the air filled in the first receiving portion 152b to the outside of the third receiving portion 152d.

공구척(160)은 진퇴 연동체(161), 진퇴 가이드체165), 선단 캡(167), 스프링(168), 공구밀착볼트(171), 탄성링(173)을 구비한다.The tool chuck 160 includes an advancing and retreating interlocking body 161, an advancing and retreating guide body 165, a tip cap 167, a spring 168, a tool contact bolt 171, and an elastic ring 173.

진퇴 연동체(161)는 공구(10)의 삽입 장착을 지원하며 피스톤(136)의 왕복운동에 연동되어 진퇴되는 요소이다. The advancing and retreating interlocking body 161 is an element that supports the insertion and installation of the tool 10 and is interlocked with the reciprocating motion of the piston 136 to move forward and backward.

진퇴 연동체(161)를 구분하면, 공구 삽입부분(161a), 링부분(161c) 및 연장봉부분(161d)을 갖는 구조로 되어있다.When the advancing and retreating interlocking body 161 is divided, it has a structure having a tool insertion portion 161a, a ring portion 161c, and an extension rod portion 161d.

공구 삽입부분(161a)은 선단으로부터 비면처리부분(161b)까지 동일 외경을 갖되 외형이 제2수용부분(152b)을 통해 진퇴될 수 있게 사각형상으로 면처리되어 있고, 선단에 공구(10)가 진입되는 진입홈(162)이 길이방향을 따라 연장되되 종단에 공구(10)의 회전을 억제시키도록 사각형상의 고정홈(163)이 진입홈(162)에 연통되게 형성되어 있다. 공구 삽입부분(161a)의 외주면 선단에 나사산이 형성되어 있으며 이탈방지볼(176)이 안착될 수 있는 볼안착홀(164)이 형성되어 있다. 또한 공구 삽입부분(161a)의 선단에는 후술되는 선단캡(167)이 결합된 상태에서 이탈을 억제하기 위한 이탈 방지링(178)을 끼워 삽입할 수 있는 삽입홈(177)이 형성되어 있다.The tool insertion portion (161a) has the same outer diameter from the tip to the non-faceted portion (161b), but the outer shape is faced in a square shape so that it can advance and retreat through the second receiving portion (152b), and the tool (10) at the tip The entry groove 162 is extended along the longitudinal direction, and a rectangular fixing groove 163 is formed to be in communication with the entry groove 162 so as to suppress the rotation of the tool 10 at the end. A thread is formed at the tip of the outer circumferential surface of the tool insertion portion 161a, and a ball seating hole 164 through which the separation prevention ball 176 can be seated is formed. In addition, an insertion groove 177 is formed at the tip of the tool insertion portion 161a into which a separation preventing ring 178 for suppressing separation in a state in which the tip cap 167 described later is engaged.

링부분(161c)은 공구삽입부분(161a)의 비면처리부분(161b)의 종단으로부터 연장되되 공구 삽입부분(161a)보다 확장된 외경을 갖게 형성되어 있다. 링부분(161c)은 후술되는 스프링(168)의 일단이 이탈되지 않게 지지시키는 지지영역을 제공한다.The ring portion 161c extends from the end of the non-surface treatment portion 161b of the tool insertion portion 161a, but is formed to have an outer diameter that is larger than that of the tool insertion portion 161a. The ring portion 161c provides a support region for supporting one end of the spring 168 to be described later so as not to be separated.

연장봉부분(161d)은 링부분(161c)보다 작은 외경을 갖으며 링부분(161c)으로부터 멀어지는 방향으로 연장되어 피스톤 로드(136a)와 대향된다. 연장봉부분(161d)의 외경은 제4중단 수용부분(132d)에 진입될 수 있게 적용된다.The extension rod portion 161d has an outer diameter smaller than that of the ring portion 161c and extends in a direction away from the ring portion 161c to face the piston rod 136a. The outer diameter of the extension rod portion 161d is applied so as to enter the fourth stop receiving portion 132d.

진퇴 가이드체(165)는 연장봉 부분(161d) 외측에 삽입되어 연장봉 부분(161d)에 대해 진퇴가능하게 연장봉 부분(161d)에 삽입되는 삽입홀이 형성되어 있다. 진퇴 가이드체(165)는 제4중단 수용부분으로의 진입이 가능한 외경을 갖는 가이드 바디의 선단에 제4중단 수용부분으로(132d)의 진입은 차단되되 제5중단 수용부분(132e)에 안착될 수 있는 외경을 갖는 후퇴차단링부분(165b)을 갖는 구조로 되어 있다. 또한 진퇴 가이드체(165)는 제4중단 수용부분(132d)으로부터 타격 하우징(152)으로의 에어배출이 가능하게 내경이 작아지는 방향으로 인입되되 원주방향으로 상호 이격되게 형성되어 길이방향을 따라 연장된 공기 안내홈(132a)이 복수 개 형성되어 있다. The advance and retreat guide body 165 is inserted outside the extension rod portion 161d and has an insertion hole inserted into the extension rod portion 161d so as to advance and retreat with respect to the extension rod portion 161d. Advance and retreat guide body 165 is blocked from entering the fourth stop receiving portion (132d) at the front end of the guide body having an outer diameter capable of entering the fourth stop receiving portion, but is seated in the fifth stop receiving portion (132e). It has a structure having a retreat blocking ring portion (165b) having an outer diameter that can be. In addition, the advance and retreat guide body 165 is drawn in a direction in which the inner diameter is reduced to enable air discharge from the fourth stop receiving portion 132d to the hitting housing 152, but is formed to be spaced apart from each other in the circumferential direction and extends along the length direction. A plurality of air guide grooves 132a are formed.

스프링(168)은 타격하우징(152) 내에서 진퇴 연동체(161)의 링부분(161c) 사이에서 탄성력을 인가하도록 설치되어 있다. 또한 스프링(168)은 피스톤(136)이 전방으로 최대 전진 위치까지 전진하였을 때 진퇴 연동체(161)에 반발력을 제공하여 피스톤(136)이 제2중단 수용부분(132b)에 끼이는 것을 방지한다.The spring 168 is installed so as to apply an elastic force between the ring portions 161c of the advancing and retreating interlocking bodies 161 in the striking housing 152. In addition, the spring 168 prevents the piston 136 from being caught in the second stop receiving portion 132b by providing a repulsive force to the advancing and retreating interlocking body 161 when the piston 136 advances forward to the maximum advancing position. .

선단캡(167)은 타격하우징(152) 외부로 노출된 공구삽입부분(161a)과 나사결합되며 제2수용부분(152c)보다 확장된 외경을 갖게 형성되어 있다. 선단캡(167)은 공구(10)가 관통되게 삽입되는 관통홀(166a)이 형성되어 있고, 외주면에서 관통홀(167a)로 연통되는 수직홀(167b)이 형성되어 있다. 또한, 선단캡(167)에는 수직홀(167b)을 경유하는 방향으로 원주방향을 따라 내측으로 인입되게 끼움홈(167c)이 형성되어 있다.The tip cap 167 is screwed with the tool insertion portion 161a exposed to the outside of the hitting housing 152 and is formed to have an outer diameter that is larger than the second receiving portion 152c. The tip cap 167 has a through hole 166a through which the tool 10 is inserted, and a vertical hole 167b that communicates with the through hole 167a on the outer circumferential surface thereof. In addition, a fitting groove 167c is formed in the tip cap 167 to be inserted inward along the circumferential direction in a direction passing through the vertical hole 167b.

공구 밀착볼트(171)는 수직홀(167b)에 나사결합되어 관통홀(167a)내로 입출되며 공구(10)를 가압고정하며 상단에 하방으로 인입된 회전억제 결속홈(171a)이 형성되어 있다.The tool adhesion bolt 171 is screwed into the vertical hole 167b to enter and exit into the through hole 167a, press and fix the tool 10, and a rotation inhibiting binding groove 171a drawn downward at the top is formed.

회전억제 탄성링(173)은 C자 형태로 형성되어 있고, 선단캡(167)의 끼움홈(167c)에 삽입되어 공구밀착볼트(171)의 결속홈(171a)에 걸리도록 결합되어 공구 밀착볼트(171)의 진동에 의한 회전을 억제시킨다.The rotation-restraining elastic ring 173 is formed in a C-shape, and is inserted into the fitting groove 167c of the tip cap 167 and coupled to be caught in the binding groove 171a of the tool contact bolt 171, and the tool contact bolt (171) to suppress rotation due to vibration.

풀림방지부는 타격하우징(152)과 작동몸체(132) 사이에 결합되어 공구(10)의 진퇴 작동시 발생되는 진동에 의해 타격하우징(152)이 작동몸체(132)에 대해 풀리는 것을 방지하도록 작동몸체(132)의 외주면에 결합되어 구속지지홈(135a) 및 걸이홈(153)에 걸쳐 삽입되는 고정핀(181a)을 갖는 바인딩 부재(181)가 적용되어 있다.The loosening prevention unit is coupled between the striking housing 152 and the operating body 132 to prevent the striking housing 152 from being released with respect to the operating body 132 by the vibration generated when the tool 10 moves forward and backward. A binding member 181 having a fixing pin 181a coupled to the outer circumferential surface of the 132 and inserted across the restraining support groove 135a and the hook groove 153 is applied.

바인딩 부재(181)는 제4중단 수용부분(132d)의 외주면에 형성된 결착홈(132f)에 삽입될 수 있게 영문자'C'자 형상으로 형성된 지지부분과, 지지부분의 일단에서 절곡되어 구속지지홈(135a)에 안착될 수 있게 수평하게 연장된 수평부분 및 수평부분의 종단에서 수평부분에 대해 직교하는 방향으로 절곡되어 걸이홈(153)에 진입될 수 있게 연장된 수직부분을 갖는 구조로 되어 있다. 여기서 수평부분과 수직부분이 고정핀(181a)에 해당한다.The binding member 181 has a support portion formed in an English letter'C' shape so that it can be inserted into a binding groove 132f formed on the outer circumferential surface of the fourth stop receiving portion 132d, and a restriction support groove bent at one end of the support portion. It has a structure having a horizontal portion extending horizontally so that it can be seated on (135a) and a vertical portion extending so as to be bent in a direction perpendicular to the horizontal portion at the end of the horizontal portion to enter the hook groove 153 . Here, the horizontal portion and the vertical portion correspond to the fixing pin (181a).

이러한 구조에 의하면, 작동몸체(132)와 타격 하우징(152)의 나사결합에 의해 상호 결합되는 부분의 길이를 조정할 수 있고, 그에 대응하여 공구(100의 진퇴 스트로크 길이도 조정할 수 있다. 또한, 작동몸체(132)와 타격 하우징(152)의 나사결합에 의해 상호 결합되는 부분의 길이를 조정한 후 앞서 설명된 바인딩 부재(181)를 장착하면 작동몸체(132)와 타격 하우징(152) 상호간의 풀림을 억제시킬 수 있다.According to this structure, it is possible to adjust the length of the part that is mutually coupled by screwing the working body 132 and the striking housing 152, and correspondingly, the length of the advance and retreat stroke of the tool 100 can be adjusted. After adjusting the length of the part that is mutually coupled by screwing of the body 132 and the striking housing 152, and attaching the binding member 181 described above, the operating body 132 and the striking housing 152 are mutually loosened. Can be suppressed.

한편, 공구척(160)에 착탈되는 공구(10)는 도시된 구조 이외에도 다양한 형상으로 형성된 것을 적용할 수 있다.On the other hand, the tool 10 that is attached to and detached from the tool chuck 160 may be formed in various shapes other than the illustrated structure.

이러한 구조에 의하면, 패류에 고착된 이물질을 공구(10)로 분리하는 작업을 일정기간 수행한 후 유지보수를 위해 분해시 타격하우징(152), 작동몸체(132) 및 밸브 몸체(112) 상호간이 나사결합이 해제되게 조작하면 되고, 조립시에도 나사결합과정을 거치면 되기 때문에 분해 조립이 용이하다.According to this structure, the impact housing 152, the operating body 132, and the valve body 112 are mutually separated when disassembling for maintenance after performing the work of separating the foreign matter adhered to the shellfish with the tool 10 for a certain period of time. It is easy to disassemble and assemble because it can be manipulated so that the screw connection is released, and the screw connection process is also required during assembly.

또한, 공구(10)의 교체가 용이하며, 메인 버퍼공간(115a)이 초기 에어 충진 챔버로서 기능하여 피스톤(136)의 작동 지연을 최소화 할 수 있고, 작동시 진동에 의한 풀림이 방지되는 장점을 제공한다.In addition, the tool 10 can be easily replaced, and the main buffer space 115a functions as an initial air filling chamber, thereby minimizing the delay in operation of the piston 136, and preventing loosening due to vibration during operation. to provide.

이상에서 설명된 에어 치핑햄퍼에 의하면, 작동몸체와 타격하우징의 진동에 의한 나사풀림을 억제시킬 수 있고, 진퇴 스트로크 길이를 용이하게 조정할 수 있으며, 공구의 교체가 용이한 장점을 제공한다. According to the air chipping hamper described above, it is possible to suppress screw loosening due to vibration of the operating body and the impact housing, it is possible to easily adjust the advancing and retreating stroke length, and it is possible to easily replace the tool.

110: 에어공급부 112: 밸브몸체
121: 밸브 125: 레버
130: 에어작동부 140: 실린더 지지부재
148: 와셔 150: 타격부110: air supply unit 112: valve body
121: valve 125: lever
130: air operation unit 140: cylinder support member
148: washer 150: hitting part

Claims

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An air supply unit having an air inlet through which air is introduced at one end, and having a valve body equipped with a valve capable of opening and closing a front end flow path leading from the air inlet to the air outlet;
An air operating unit that has a piston inside the operating body that is screwed with the valve body so that air supplied from the air discharge port of the valve body can be introduced to reciprocate the piston by air supplied from the air supply unit. Wow;
A striking part having a striking housing screwed to the operating body of the air actuating part, a tool chuck mounted in the striking housing and a tool connected to the tool chuck and reciprocating in connection with the advancing and retreating operation of the piston;
And a piston support member installed between the piston and the valve body,
It is provided between the impact housing and the operating body to prevent loosening of the impact housing against the operating body by vibration caused by the advance and retreat operation of the tool; and
A plurality of hook grooves drawn in a direction away from the operating body are formed in the longitudinal section screwed with the operating body of the striking housing and are spaced apart from each other along the circumferential direction, and the outer circumferential surface outside the screwed portion of the operating body has an outer diameter On the protruding jaw protruding in the extending direction, a restraining support groove inserted in the direction of decreasing the outer diameter is formed,
The loosening prevention part
And a binding member coupled to the outer circumferential surface of the operating body and having a fixing pin inserted across the restraining support groove and the hook groove, and
A first engaging portion of the valve body with a thread formed on an inner circumferential surface to be screwed with the operating body by being introduced inward from the other end opposite the air inlet, and the piston extending in a direction toward the air inlet from the first engaging portion And a main buffer portion in which a part of the support member is accommodated and has an inner diameter that is larger than the outer diameter of the piston support member and has a main buffer space in which air discharged from the air outlet is temporarily filled,
The main buffer space and the front end flow path are formed in communication with each other, including an area not occupied by the piston support member, on the inner bottom surface of the main buffer space opposite to the piston support member, in a direction toward the front end flow path. Air chipping hammer, characterized in that the sub-buffer space is provided to have a smaller inner diameter than the main buffer space.

The method of claim 3,
The piston includes a piston body having a first outer diameter and a piston rod extending from a tip of the piston body to have a second outer diameter smaller than the first outer diameter, and an intake and exhaust hole is formed on an outer peripheral surface of the piston rod, and the intake and exhaust air A flow path hole is formed from the ball through the inside of the piston rod to the end of the piston body,
The working body
A first stop receiving portion extending along the longitudinal direction with a first inner diameter from one end into which the piston support member enters so that the piston body advances and retreats, and a first stop receiving portion extending from the other end of the first stop receiving portion than the first inner diameter. 2 A second stop receiving portion extending with an inner diameter, and a third inner diameter smaller than the first inner diameter so as to allow the advance and retreat of the piston rod from the second stop receiving portion, but block the advance and retreat of the piston body. A third stop receiving portion, a fourth stop receiving portion extending from the third stop receiving portion to have a fourth inner diameter that is larger than the third inner diameter, and a fourth stop receiving portion extending from the fourth stop receiving portion to the fourth inner diameter. It is formed to have a fifth stop receiving part extending to have a 5 inner diameter,
An air guide hole formed in communication with the second stop receiving part along the longitudinal direction from the exposed side of the first stop receiving part so that the air filled in the main buffer space can be supplied to the second stop receiving part is formed. And
The tool chuck is
Inserting a tool that has an entry groove into which the tool enters, but has a rectangular fixing groove at the end, a thread formed at the tip of the outer circumferential surface, and has a ball seating hole that can be seated in a rectangular shape with an external shape. A portion, a ring portion extending from the tool insertion portion and having an outer diameter larger than the tool insertion portion, and an extension rod portion having an outer diameter smaller than the ring portion and extending in a direction away from the ring portion to face the piston rod A progressive linkage;
It is inserted into the outside of the extension rod portion and formed so as to move forward and backward, and has a retraction blocking ring portion having an outer diameter that can be seated in the fifth stop receiving portion while blocking entry into the fourth stop receiving portion, the fourth stop receiving portion An advancing and retreating guide body having an air guide groove which is introduced in a direction in which an inner diameter is decreased so as to allow air discharge from the impact housing to be discharged from, but is spaced apart from each other in a circumferential direction;
A tip cap that is screwed with the tool insertion portion exposed to the outside of the hitting housing, has a through hole through which the tool is inserted, and has a vertical hole communicating with the through hole from an outer circumferential surface;
A spring installed to apply an elastic force between the ring portions of the advancing and retreating interlocking body in the striking housing;
A tool contact bolt which is screwed into the vertical hole, enters and exits into the through hole, pressurizes the tool, and has a rotation inhibiting binding groove drawn downward at an upper end;
And a rotation-restraining elastic ring inserted into a fitting groove formed to be inserted inwardly along a circumferential direction in a direction passing through the vertical hole in the tip cap and coupled so as to be caught in the binding groove of the tool contact bolt. Air Chipping Hammer.