KR20130001961U - Hollow piston for a variable swash plate type compressor - Google Patents

Hollow piston for a variable swash plate type compressor Download PDF

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Publication number
KR20130001961U
KR20130001961U KR2020110008384U KR20110008384U KR20130001961U KR 20130001961 U KR20130001961 U KR 20130001961U KR 2020110008384 U KR2020110008384 U KR 2020110008384U KR 20110008384 U KR20110008384 U KR 20110008384U KR 20130001961 U KR20130001961 U KR 20130001961U
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KR
South Korea
Prior art keywords
piston
swash plate
variable swash
cylinder bore
hollow
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KR2020110008384U
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Korean (ko)
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이정열
우상국
강성우
이승훈
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(주)케이씨
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Priority to KR2020110008384U priority Critical patent/KR20130001961U/en
Publication of KR20130001961U publication Critical patent/KR20130001961U/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
    • F04B27/0878—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05B2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/25—Manufacture essentially without removing material by forging
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

본 고안은 가변 사판식 압축기에 있어서 실린더 블록의 실린더 보어 내에서 왕복운동 하는 피스톤에 관한 것으로서, 보다 상세하게는 피스톤을 제조하는 소재 단조공정에서 3축 열간단조 기술을 바탕으로 용접부분가 실린더 블록의 실린더 보어 내에서 왕복운동 하여, 구동부(Shaft, Swash plate)에서 전달되는 강한 횡력에 의한 용접부분 파단현상을 제거하여 자동차용 가변 사판식 압축기의 내구력 향상을 제공코자 하는 것이다.
즉, 본 고안은 피스톤 윙부를 3축 단조로 중공부가 형성되게 구성하고, 이에 2축 단조로 구성한 피스톤 캡부를 용접하여 피스톤을 구성함으로 해서 용접부분이 피스톤의 하단에 위치되도록 구성하여 피스톤이 실린더 보어 내에서 왕복운동을 할 때 용접부분이 실린더 보어 밖으로 노출되지 않게 구성한 것이다.The present invention relates to a piston reciprocating in a cylinder bore of a cylinder block in a variable swash plate compressor, and more particularly, based on a three-axis hot forging technique in a material forging process for manufacturing a piston, a cylinder of a cylinder block is welded. The reciprocating motion in the bore is to remove the weld rupture phenomenon caused by the strong lateral force transmitted from the drive (Shaft, Swash plate) to provide the durability of the variable swash plate compressor for automobiles.
That is, the present invention is configured such that the hollow part is formed by the three-axis forging of the piston wing, and by welding the piston cap formed by the two-axis forging to configure the piston, the welded portion is positioned at the lower end of the piston so that the piston is a cylinder bore. When reciprocating inside, the welded part is constructed so that it is not exposed outside the cylinder bore.

Description

가변 사판식 압축기용 중공 피스톤{Hollow piston for a variable swash plate type compressor}Hollow piston for a variable swash plate type compressor

본 고안은 가변 사판식 압축기에 있어서 실린더 블록의 실린더 보어 내에서 왕복운동 하는 피스톤에 관한 것으로서, 보다 상세하게는 피스톤을 제조하는 소재 단조공정에서 3축 열간단조 기술을 바탕으로 용접부분이 실린더 블록의 실린더 보어 내에서 왕복운동 하여, 구동부(Shaft, Swash plate)에서 전달되는 강한 횡력에 의한 용접부분 파단현상을 제거하여 자동차용 가변 사판식 압축기의 내구력 향상을 제공코자 하는 것이다.
The present invention relates to a piston reciprocating in a cylinder bore of a cylinder block in a variable swash plate compressor, and more particularly, based on a three-axis hot forging technique in a material forging process for manufacturing a piston, The reciprocating motion in the cylinder bore to remove the weld rupture phenomenon caused by the strong lateral force transmitted from the drive (Shaft, Swash plate) to provide the durability of the variable swash plate compressor for automobiles.

자동차용 공조장치의 압축기로 가변 사판식 압축기가 널리 사용되고 있으며, 이런 가변 사판식 압축기(1)는 도 1, 도 2에 도시된 바와 같이 공통적으로 하우징(2)과, 상기 하우징(2)에 결합되는 실린더 블록(3), 그리고 피스톤(4)과 이를 구동하기 위한 구동장치를 포함하는 구성으로 이루어진다.A variable swash plate type compressor is widely used as a compressor of a vehicle air conditioner, and the variable swash plate type compressor 1 is commonly coupled to the housing 2 and the housing 2 as shown in FIGS. 1 and 2. It consists of a cylinder block 3, and a configuration including a piston 4 and a driving device for driving it.

이러한 가변 사판식 압축기(1)는 압력의 변동에 따라 사판(5)의 경사각을 변화시켜 피스톤(4)의 행정을 제어하여 냉매에 대한 정밀한 압축제어를 달성할 수 있으며, 사판(5)의 경사각이 연속적으로 변화함으로서 압축기(1)에 의한 엔진의 급격한 토크 변동을 적게 하고 압축기(1)를 구동하고 있는 중에도 차량의 운전성능이나 연비를 양호하게 유지할 수 있다는 특징이 있다.The variable swash plate compressor 1 controls the stroke of the piston 4 by changing the inclination angle of the swash plate 5 in accordance with the change in pressure to achieve precise compression control for the refrigerant, and the inclination angle of the swash plate 5. This continuous change reduces the sudden torque fluctuation of the engine by the compressor 1, and maintains the driving performance and fuel economy of the vehicle well while the compressor 1 is being driven.

한편 상기 종래 가변 사판식 압축기(1)에서는 슈(6)를 개재하여 사판(5)에 설치된 피스톤(4)이 실린더 보어(3a)에 삽입되어 왕복 운동을 할 때 피스톤(4)의 자전운동을 방지하는 구성이 있지만, 가변 사판식 압축기(1)의 구동 중에 피스톤(4)이 조금씩 자전하려는 힘이 작용하게 되므로, 사판(5)과 슈(6), 실린더 보어(3a) 등에서의 마찰을 증가시키는 원인이 될 뿐 아니라, 그로 인하여 실린더 보어(3a) 내에서 피스톤(4)의 원활한 왕복 운동에도 영향을 미친다는 문제가 있었다.On the other hand, in the conventional variable swash plate compressor 1, when the piston 4 installed in the swash plate 5 via the shoe 6 is inserted into the cylinder bore 3a to reciprocate, the piston 4 rotates in rotation. Although there is a configuration to prevent, since the force to rotate the piston 4 little by little during the operation of the variable swash plate compressor 1, the friction in the swash plate 5, the shoe 6, the cylinder bore 3a, etc. increases. In addition to causing this, there was a problem that also affects the smooth reciprocating motion of the piston 4 in the cylinder bore 3a.

즉, 사판(5)이 회전하면 이와 접하고 있는 슈(6)에 마찰력이 가해지는데 이 마찰력으로 인해 모멘트가 발생하게 된다.That is, when the swash plate 5 rotates, a friction force is applied to the shoe 6 in contact with the swash plate 5, and a moment is generated due to the friction force.

이런 가변 사판식 압축기를 1년 내내 사용하는 북미의 동남부와 서남부 지역에서는 무더운 날씨 탓에 자동차 엔진에 의한 순간적인 강력한 토크가 압축기(1)에 전해지게 되는데 압축기(1)내의 구동부(5)에 의한 횡력에 의한 강한 모멘트로 인해 피스톤(4)의 용접부분이 파단되게 된다.In the southeast and southwestern regions of North America, where these variable swash type compressors are used all year round, instantaneous powerful torque from the automobile engine is transmitted to the compressor (1) due to the hot weather. The strong moment due to the lateral force causes the welded portion of the piston 4 to break.

즉, 기존의 중공 피스톤(4)은 도 3에 도시된 바와 같이 원소재인 환봉으로 피스톤 윙부(4a)와 피스톤 캡부(4b)를 각각 단조성형한 후 이들을 용접하여 내부에 비어 있는 중공부(4c)를 갖는 피스톤(4)을 제작하게 되는데, 이때 피스톤 윙부(4a)와 피스톤 캡부(4b)를 2축 단조로 성형한 상태에서 기계가공 후 상호 용접하여 일체가 되도록 구성하게 된다.That is, the conventional hollow piston 4 is forged to form the piston wing portion 4a and the piston cap portion 4b with round rods as raw materials as shown in FIG. 3, and then weld them to the hollow portion 4c. To produce a piston (4) having a), wherein the piston wing portion (4a) and the piston cap portion (4b) is configured to be integrally welded together after machining in the state of being formed by biaxial forging.

상기와 같이 중공부(4c)가 형성되도록 용접하여 제조하는 피스톤(4)은 피스톤 윙부(4a)와 피스톤 캡부(4b)를 상호 일체로 결합하는 용접부분(4d)이 실린더 보어(3a)외부로 노출되는 피스톤(4) 상부에 위치되는 구성이다. As described above, the piston 4 manufactured by welding the hollow portion 4c to be formed has a welded portion 4d that integrally couples the piston wing portion 4a and the piston cap portion 4b to the outside of the cylinder bore 3a. It is a configuration located above the exposed piston (4).

이러한 구성의 피스톤(4)의 용접부분(4d)은 실린더 블록(3)의 실린더 보어(3a)내에서 왕복운동을 할 때 실린더 보어(3a)밖으로 노출되어 구동부(5) 회전력에 의한 강력한 횡력에 피스톤 캡부(4b)와 피스톤 윙부(4a)사이에 있는 용접부분(4d)이 파단되어 압축기(1)가 파손되는 문제가 발생 하였다.
The welded portion 4d of the piston 4 having such a configuration is exposed out of the cylinder bore 3a when reciprocating in the cylinder bore 3a of the cylinder block 3, and is thus exposed to the strong lateral force caused by the rotational force of the drive unit 5. The welding part 4d between the piston cap part 4b and the piston wing part 4a breaks, causing the compressor 1 to break.

KR 10-2011-0093387 A 2011.08.18.KR 10-2011-0093387 A 2011.08.18. KR 10-0986942 B1 2010.10.12.KR 10-0986942 B1 2010.10.12.

이에 본 고안자는 상기한 종래 중공 피스톤의 문제점을 일소코자 본 고안을 안출한 것으로서, 본 고안에서는 피스톤을 제조하는 소재 단조공정에서 3축 열간단조 기술을 바탕으로 용접부분가 실린더 블록의 실린더 보어 내에서 왕복운동 하여, 구동부(Shaft, Swash plate)에서 전달되는 강한 횡력에 의한 용접부분 파단현상을 제거하여 자동차용 가변 사판식 압축기의 내구력 향상을 제공코자 하는 것이다.
The present inventors have devised the present invention to solve the above problems of the conventional hollow piston, and in the present invention, the welded part reciprocates within the cylinder bore of the cylinder block based on the three-axis hot forging technique in the material forging process of manufacturing the piston. By removing the weld rupture phenomenon caused by the strong lateral force transmitted from the drive (Shaft, Swash plate) to provide the durability of the variable swash plate compressor for automobiles.

과제 해결수단으로 본 고안에서는 피스톤 윙부를 3축 단조로 중공부가 형성되게 구성하고, 이에 2축 단조로 구성한 피스톤 캡부를 용접하여 피스톤을 구성함으로 해서 용접부분이 피스톤의 하단에 위치되도록 구성하여 피스톤이 실린더 보어 내에서 왕복운동을 할 때 용접부분이 실린더 보어 밖으로 노출되지 않게 구성하였다.
As a means for solving the problem, in the present invention, the piston wing portion is formed to have a hollow portion formed by three-axis forging, and the piston is formed by welding the piston cap portion formed by two-axis forging, so that the welded portion is positioned at the lower end of the piston. When reciprocating in the cylinder bore, the welded part is constructed so that it is not exposed outside the cylinder bore.

본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤을 사용할 경우 순간적인 토크에 의한 중공 피스톤 용접부분 파단현상을 방지할 수 있다.When the hollow piston for the variable swash plate compressor provided by the present invention is used, it is possible to prevent the hollow piston welding part from breaking due to instantaneous torque.

기존의 단조 공정인 오픈타입의 2축 열간 성형 조건에서 발생 하는 원소재 슬러지를 감소시킬 수 있고, 수입에 의존하고 있는 알루미늄합금을 절약 할 수 있을 뿐만 아니라, 가공치수를 단조 소재에 반영함으로서, 중공 피스톤 용접 전 가공공수를 기존의 4공수에서 1공수로 절감하여 생산량 증대 및 가격경쟁력을 가질 수 있다 It is possible to reduce raw material sludge generated under the open-type two-axis hot forming condition, which is a conventional forging process, and to save aluminum alloys that depend on imports. By reducing the number of machining work before piston welding from one of the existing 4 labors to 1 labor, it is possible to increase production volume and have a competitive price.

또한 피스톤에 형성되어 있는 용접부분이 실린더 보어 내부에 항상 위치하므로 구동부 회전력에 의한 강력한 횡력에 피스톤 캡부와 피스톤 윙부 사이에 있는 용접부분가 파단되는 것을 최소화 할 수 있으므로 압축기가 파손되는 문제점을 일소할 수 있어 가변 사판식 압축기의 내구성을 향상 시키는 효과를 제공할 수 있는 것이다.
In addition, since the welded portion formed in the piston is always located inside the cylinder bore, the breakage of the welded portion between the piston cap portion and the piston wing portion can be minimized due to the strong lateral force caused by the driving force. Will be able to provide the effect of improving the durability of the variable swash plate compressor.

도 1은 일반적으로 사용하고 있는 가변 사판식 압축기의 분해사시도
도 2는 도 1의 조립상태 단면도
도 3은 종래 가변 사판식 압축기용 중공 피스톤의 제조공정도
도 4는 본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤의 일실시예를 보인 단면도
도 5는 본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤의 제조공정도1 is an exploded perspective view of a variable swash plate compressor generally used
Figure 2 is a sectional view of the assembled state of Figure 1
Figure 3 is a manufacturing process of the hollow piston for a conventional variable swash plate compressor
Figure 4 is a cross-sectional view showing an embodiment of a hollow piston for a variable swash plate compressor provided in the present invention
5 is a manufacturing process of the hollow piston for the variable swash plate compressor provided by the present invention

이하에서 본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤(11)의 실시예를 첨부 도면에 의거하여 설명한다.Hereinafter, an embodiment of a hollow piston 11 for a variable swash plate compressor provided by the present invention will be described with reference to the accompanying drawings.

도 4는 본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤의 일실시예를 보인 단면도를 도시한 것이고, 도 5는 본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤(11)의 제조공정도를 도시한 것이다.Figure 4 shows a cross-sectional view showing an embodiment of a hollow piston for a variable swash plate compressor provided in the present invention, Figure 5 shows a manufacturing process diagram of a hollow piston 11 for a variable swash plate compressor provided in the present invention. It is.

본 고안에서 제공하는 가변 사판식 압축기용 중공 피스톤(11)은 내부에 중공부(14)가 형성되게 피스톤 윙부(12)와 피스톤 캡부(13)를 별로 형성한 상태에서 이들을 상호 용접하여 완성하게 된다.Hollow piston 11 for the variable swash plate type compressor provided in the present invention is completed by welding the piston wing portion 12 and the piston cap portion 13 in a state in which the hollow portion 14 is formed therein. .

본 고안에서는 피스톤 윙부(12)에 단조 성형에 의해 중공부(14)가 형성되도록 구성하여 피스톤 캡부(13)와 결합되는 용접부분(15)이 실린더 보어(16) 내부에 항상 위치하므로 구성하는 것을 특징으로 한다.In the present invention, the hollow part 14 is formed in the piston wing part 12 by forging molding so that the welding part 15 coupled to the piston cap part 13 is always located inside the cylinder bore 16. It features.

본 고안의 제조는 먼저 일정 길이로 절단된 환봉으로 1차 성형(2축 단조) 및 2차 성형(3축 단조)하여 피스톤 윙부(12)에 중공부(14)를 형성하고, 아울러 피스톤 캡부(13) 소재를 성형(2축 단조)한 상태에서 피스톤 윙부(12)의 선단을 기계가공하고, 피스톤 윙부(12)와 피스톤 캡부(13)를 상호 용접하여 일체가 되게 구성한다.In the manufacture of the present invention, first, by forming a hollow portion 14 in the piston wing part 12 by primary molding (biaxial forging) and secondary molding (triaxial forging) with a round bar cut to a certain length, and further, a piston cap part ( 13) The tip of the piston wing portion 12 is machined in a state in which the raw material is molded (biaxial forging), and the piston wing portion 12 and the piston cap portion 13 are welded to each other to be integrated.

본 고안에서는 마찰용접법을 이용하여 피스톤 윙부(12)와 피스톤 캡부(13)를 용접함이 바람직하다.In the present invention, it is preferable to weld the piston wing portion 12 and the piston cap portion 13 using a friction welding method.

상기와 같은 제조공정에 의해 제공되는 본 고안의 가변 사판식 압축기용 중공 피스톤(11)은 용접부분(15)이 피스톤(11)의 하단에 위치하는 구성이다.Hollow piston 11 for a variable swash plate compressor of the present invention provided by the manufacturing process as described above is a configuration in which the welded portion 15 is located at the lower end of the piston (11).

이러한 구성은 상기에서 언급한 바와 같이 실린더 보어(16) 내부에 항상 위치하게 되는 구성으로 구동부 회전력에 의한 강력한 횡력이 피스톤(11)에 제공되더라도, 피스톤 캡부(13)와 피스톤 윙부(12) 사이에 있는 용접부분(15)로 전달되는 힘이 약해져 파단되는 것을 최소화 할 수 있게 되는 것이다.Such a configuration is such that, as mentioned above, the cylinder bore 16 is always positioned within the cylinder bore 16, even though a strong lateral force due to the drive rotational force is provided to the piston 11, between the piston cap 13 and the piston wing 12. The force transmitted to the welded portion 15 is weakened to minimize the breakage.

그리고 본 고안은 제조공정상에서도 기계가공수를 줄일 수 있어 생산성을 향상시킬 수 있다.And the present invention can reduce the number of machining in the manufacturing process can improve the productivity.

즉, 종래에는 도 3에 도시된 바와 같이 피스톤 윙부(4a)와 피스톤 캡부(4b)를 단조 성형한 상태에서 피스톤 윙부(4a)의 내경과 외경 및 측면가공과 피스톤 캡부(4b)의 측면가공을 행하여야 하나, 본 고안에서 제공하는 피스톤 윙부(12)의 측면 가공만 하면 되므로 가공공수를 대폭 줄일 수 있는 것이다.That is, conventionally, as shown in FIG. 3, the inner and outer diameters and the side surfaces of the piston wing portion 4a and the side surfaces of the piston cap portion 4b are formed by forging the piston wing portion 4a and the piston cap portion 4b. It should be done, but only the side processing of the piston wing portion 12 provided in the present invention will greatly reduce the number of machining.

본 고안의 상세한 설명에서는 구체적인 실시예에 관해 설명하고 있으나, 본 고안의 범주에서 벗어나지 않는 한도 내에서 다양한 변형이 가능함은 물론이다. 그러므로 본 고안의 보호 범위는 설명된 실시예에 국한되어 정해져서는 안 되며, 후술하는 청구범위 뿐만 아니라 균등한 것들에 의해 정해져야 한다.
Although a detailed description of the present invention has been provided for specific embodiments, it will be understood that various modifications may be made without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the embodiments described, but should be determined by equivalents as well as the following claims.

11:(중공) 피스톤 12:피스톤 윙부
13:피스톤 캡부 14:중공부
15:용접부분 16:실린더 보어11: (hollow) piston 12: piston wing
13: Piston cap part 14: Hollow part
15: welding part 16: cylinder bore

Claims (1)

내부에 중공부(14)가 형성되게 피스톤 윙부(12)와 피스톤 캡부(13)를 별로 형성한 상태에서 이들을 상호 용접하여 구성하는 가변 사판식 압축기용 중공 피스톤(11)에 있어서,
피스톤(11)이 실린더 보어(16) 내에서 왕복운동을 할 때 용접부분(15)이 항상 실린더 보어(16) 밖으로 노출되지 않도록 피스톤 윙부(12)에 중공부(14)를 단조 성형하고 피스톤 캡부(13)와 용접 구성한 것을 특징으로 하는 가변 사판식 압축기용 중공 피스톤.In the hollow piston 11 for the variable swash plate type compressor, which is formed by welding the piston wing portion 12 and the piston cap portion 13 to each other so that the hollow portion 14 is formed therein.
When the piston 11 reciprocates in the cylinder bore 16, the hollow part 14 is forged into the piston wing 12 so that the welded part 15 is not always exposed outside the cylinder bore 16, and the piston cap part 13. A hollow piston for a variable swash plate compressor, comprising a welding configuration with (13).
KR2020110008384U 2011-09-16 2011-09-16 Hollow piston for a variable swash plate type compressor KR20130001961U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230062724A (en) 2021-10-30 2023-05-09 서정연 A laptop pouch to adjust the size

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230062724A (en) 2021-10-30 2023-05-09 서정연 A laptop pouch to adjust the size

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