KR20130055874A - Swash plate piston pump for smooth lubricating - Google Patents

Swash plate piston pump for smooth lubricating Download PDF

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Publication number
KR20130055874A
KR20130055874A KR1020110121533A KR20110121533A KR20130055874A KR 20130055874 A KR20130055874 A KR 20130055874A KR 1020110121533 A KR1020110121533 A KR 1020110121533A KR 20110121533 A KR20110121533 A KR 20110121533A KR 20130055874 A KR20130055874 A KR 20130055874A
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KR
South Korea
Prior art keywords
swash plate
piston pump
coating
plate support
defric
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KR1020110121533A
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Korean (ko)
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문병춘
조준연
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현대중공업 주식회사
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Priority to KR1020110121533A priority Critical patent/KR20130055874A/en
Publication of KR20130055874A publication Critical patent/KR20130055874A/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
    • 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
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/109—Lubrication
    • 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
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1054—Actuating elements
    • 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
    • F05B2230/90—Coating; Surface treatment
    • 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
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/20—Inorganic materials, e.g. non-metallic materials
    • F05B2280/2009—Sulfides
    • F05B2280/20091—Sulfides of molybdenum
    • 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
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Reciprocating Pumps (AREA)

Abstract

PURPOSE: A swash plate type piston pump for smooth lubrication is provided to smoothly lubricate by defric-coating the contact surface of a swash plate support and a swash plate. CONSTITUTION: A swash plate type piston pump for smooth lubrication comprises a swash plate(100) and a swash plate support stand. The swash plate support stand supports the swash plate. The convex part(110) of the swash plate is formed with a defric coating part(120). The contact surface of the swash plate support stand is formed with the defric coating part.

Description

윤활이 원활한 사판식 피스톤 펌프{Swash Plate Piston Pump for Smooth Lubricating}Swash Plate Piston Pump for Smooth Lubricating

본 발명은 윤활이 원활한 사판식 피스톤 펌프에 관한 것으로서, 더욱 상세하게는 사판과 사판 지지대의 접촉면에 데프릭코팅을 하여 원활한 윤활작용이 이루어질 수 있도록 한 것이다.
The present invention relates to a swash plate piston pump having a smooth lubrication, and more particularly, it is possible to achieve a smooth lubrication action by applying a drip coating to the contact surface of the swash plate and the swash plate support.

일반적으로, 사판식 피스톤 펌프는 사판의 배면을 원호형으로 돌출시킴과 동시에, 케이싱 또는 사판 지지대에는 원호형의 지지면이 형성되어 상기 사판의 원호형 배면을 지지하고 있고, 상기 지지면에 윤활유를 주입하여 사판이 경사져서 움직이도록 함으로써, 사판의 회전축에 대한 경전 각도가 변화하여 작동유의 토출량이 조절되도록 구성되어 있다. In general, the swash plate piston pump protrudes the back surface of the swash plate in an arc shape, and at the same time, an arc-shaped support surface is formed on the casing or the swash plate support to support the arc-shaped back surface of the swash plate, and the support surface is lubricated. By injecting the swash plate to be inclined to move, the tilt angle with respect to the rotation axis of the swash plate is changed to adjust the discharge amount of the hydraulic oil.

구체적으로는, 상기 타입의 피스톤 펌프는, 케이싱내에 배치되는 실린더블록에 피스톤을 둘레방향으로 복수 구비하고, 회전축의 회전에 따라 실린더블록이 회전하면, 피스톤은 그 선단부가 사판에 따라 안내되면서 왕복운동하여 작동유가 흡입/토출된다. 이때, 사판의 경전각도를 크게하면, 피스톤의 스트로크가 크게되어서 토출량이 증대되는 한편, 경전각도를 작게하면, 피스톤의 스트로크가 작아져서 토출량이 감소하게 된다.Specifically, the piston pump of this type is provided with a plurality of pistons in the cylinder block disposed in the casing in the circumferential direction, and when the cylinder block rotates in accordance with the rotation of the rotary shaft, the piston is reciprocated with its tip guided along the swash plate. The hydraulic fluid is sucked in / out. At this time, if the tilt angle of the swash plate is increased, the stroke of the piston is increased to increase the discharge amount, while if the tilt angle is reduced, the stroke of the piston is reduced and the discharge amount is decreased.

이러한 사판식 피스톤 펌프에서는, 실린더블록 내에서 피스톤이 후퇴하여 작동유를 토출시킬 때에 작동유가 각 피스톤에 주어지는 반력으로 사판에 작용하기 때문에, 사판과 사판지지대 사이의 면압이 매우 높아진다. 이렇게 되면, 사판과 사판지지대의 경계면에 있는 윤활유막이 끊어지기 쉽기 때문에, 사판과 사판지지대의 슬라이딩면에는 내소부성(耐燒付性) 및 내마모성이 요구된다. 그래서, 종래에는, 주철로 된 사판과 사판지지대에 질소를 침입,확산시켜서 표면을 경화시키는 가스연질화처리를 시행하여 내소부성 및 내마모성을 부여하고 있다.In such a swash plate type piston pump, when the piston is retracted in the cylinder block to discharge the hydraulic oil, the hydraulic oil acts on the swash plate by the reaction force applied to each piston, so that the surface pressure between the swash plate and the swash plate support becomes very high. In this case, since the lubricating oil film in the interface between the swash plate and the swash plate support is likely to break, the sliding surfaces of the swash plate and the swash plate support are required to have abrasion resistance and wear resistance. Therefore, in the related art, gas soft nitriding treatment for hardening the surface by infiltrating and diffusing nitrogen into swash plate and swash plate support made of cast iron is provided to provide sinter resistance and wear resistance.

또한, 피스톤 펌프는 회전축으로의 구동력이 입력으로 되어서 작동유가 피스톤에 의해 흡입/토출되지만, 피스톤 모터도 압유의 유입/유출이 입력으로 되어서 회전축의 구동력이 출력되는 것으로서 기본적인 구조는 피스톤 펌프와 동일하기 때문에, 배경기술 설명에서는 피스톤 펌프ㆍ모터로 칭한다.In addition, in the piston pump, the driving force to the rotary shaft is input, and the hydraulic oil is sucked / discharged by the piston, but the piston motor also outputs the driving force of the rotary shaft by the inflow / outflow of the pressurized oil. The basic structure is the same as that of the piston pump. Therefore, in the background description, it is called a piston pump motor.

그러나, 사판 및 사판지지대에서의 내소부성 및 내마모성의 부여는, 슬라이딩면에 대해서만 이루어지면 족하지만, 가스연질화에 의해 표면처리를 하는 경우에는, 처리 상황 때문에 부품전체를 가스연질화하게 되고, 양산을 위해서는 대형설비가 필요하게 된다. However, the sintering and wear resistance in the swash plate and the swash plate support need only be provided for the sliding surface. However, when surface treatment is performed by gas soft nitriding, the whole part is gas softened due to the processing situation. In order to do this, large facilities are needed.

또한, 가스연질화에서는 부품전체가 고온(약 570℃)으로 가열되기 때문에, 가열변형을 일으키지 않도록 처리전에 왜취(歪取) 풀림 처리할 필요도 발생한다. In addition, in gas soft nitriding, the whole part is heated to a high temperature (about 570 ° C.), so that an annealing treatment is required before treatment so as not to cause heat deformation.

또한, 가스연질화에서는 작업성을 고려하여 수량을 합하여 일괄처리하기 때문에, 생산 리드타임이 길어지는 문제도 있다. In addition, in gas soft nitriding, there is also a problem in that the production lead time is long because the quantity is collectively processed in consideration of workability.

따라서, 가스연질화 때에는 부품표면이 깨끗하게 청정화 되지 못하여 처리가 안정되지 않기 때문에, 부품의 전(前) 세정처리가 필요하게 된다.Therefore, during gas soft nitriding, the surface of the parts cannot be cleaned cleanly, and the processing is not stable. Therefore, a pre-cleaning treatment of the parts is required.

이러한 슬라이딩면의 내소부성 및 내마모성을 높이기 위한 것으로서, 대한민국 공개특허 제 10-2008-67959호(이하 "선행기술문헌"이라 함)에 개시된 내용이 있다. In order to increase the wear resistance and wear resistance of the sliding surface, there is a content disclosed in Korean Patent Publication No. 10-2008-67959 (hereinafter referred to as "prior art document").

선행기술문헌의 내용을 살펴보면, 도 1 및 도 2에 도시된 바와 같이, 회전축(5)과 함께 회전하는 실린더블록(9)에 복수의 피스톤(10)이 둘레방향으로 배치되고, 각 피스톤(10)의 선단부(10a)가 사판(12)의 미끄럼면(26a)에 안내되어 피스톤(10)이 왕복운동하며, 사판(12)은 그 철면(32)이 사판 지지대(4)의 요면(22)에 슬라이딩 가능하게 지지되어 회전축선(L)에 대하여 경전 가능한 사판식 피스톤 펌프ㆍ모터로서, 사판지지대(4)의 요면(21)(22)은 레이저 광에 의해 부분적으로 담금질된 담금질부(21a)(22a)를 가진다 Looking at the contents of the prior art document, as shown in Figures 1 and 2, a plurality of pistons 10 are disposed in the circumferential direction in the cylinder block (9) that rotates with the rotary shaft (5), each piston 10 The front end portion (10a) of the () is guided to the sliding surface (26a) of the swash plate 12, the piston 10 reciprocates, the swash plate 12 is the concave surface 32 of the concave surface 22 of the swash plate support (4) A swash plate type piston pump and a motor which is slidably supported on the rotation axis L and is tiltable about the rotation axis L, wherein the concave surfaces 21 and 22 of the swash plate support 4 are partially quenched by laser light. Has (22a)

그러나, 상기 레이저광에 의해 부분적으로 담금질되는 담금질부를 형성한 정도로는 사판 및 사판지지대간의 접촉시 원활한 윤활작용을 하기에는 미흡하였다.
However, the degree of formation of the quenched portion partially quenched by the laser light is insufficient for smooth lubrication upon contact between the swash plate and the swash plate support.

대한민국 공개특허 제 10-2008-67959호(공개일 : 2008.7.22)Republic of Korea Patent Publication No. 10-2008-67959 (published: 2008.7.22)

본 발명은 종래기술의 단점을 해결하기 위해 이루어진 것으로서, 본 발명의 목적은 사판식 피스톤 펌프에 있어서, 사판 또는 사판 지지대의 접촉면에 데프릭코팅층을 형성하여 윤활작용이 더욱 향상될 수 있도록 한 것이다.
The present invention has been made to solve the disadvantages of the prior art, an object of the present invention is to provide a draping coating layer on the contact surface of the swash plate or the swash plate support in the swash plate piston pump so that the lubrication action can be further improved.

상기와 같은 목적을 달성하기 위한 본 발명의 해결 수단은, 사판과, 이 사판을 지지하는 사판 지지대로 이루어진 사판식 피스톤 펌프에 있어서, 상기 사판의 볼록부에는 데프릭 코팅부가 형성된 것이다.Solution to Problem The present invention for achieving the above object is a swash plate and a swash plate type piston pump including a swash plate support for supporting the swash plate, wherein the convex portion of the swash plate is provided with a defric coating portion.

또한, 상기 사판 지지대의 접촉면에 데프릭 코팅부가 형성된 것이다.
In addition, the deflective coating is formed on the contact surface of the swash plate support.

이와 같이, 본 발명은 사판식 피스톤 펌프에 있어서, 회전축과 함께 회전하는 실린더 블록내의 복수의 피스톤을 왕복운동시키는 사판과, 이 사판을 경전되게 지지하는 사판 지지대의 접촉면에 데프릭 코팅부를 형성하여 피스톤 펌프의 작동시 원활한 윤활작용이 이루어질 수 있는 효과가 있다.
As described above, the present invention provides a swash plate piston pump in which a swash plate for reciprocating a plurality of pistons in a cylinder block rotating together with a rotating shaft, and a deflective coating portion are formed on a contact surface of a swash plate support for rigidly supporting the swash plate. The operation of the pump has an effect that can be made smooth lubrication.

도 1은 종래의 사판식 피스톤 펌프·모터의 단면도이다.
도 2a는 종래의 사판 지지대의 평면도이다.
도 2b는 도 2a의 A-A선 단면도이다.
도 3은 본 발명에 따른 사판식 피스톤펌프의 사판에 데프릭 코팅부를 형성한 모습을 도시한 배면도이다.
도 4는 도 3의 B-B선 단면도이다.
도 5는 본 발명에 따른 사판식 피스톤펌프의 사판 지지대에 데프릭 코팅부를 형성한 모습을 도시한 배면도이다.
도 6은 도 5의 C-C선 단면도이다. 1 is a cross-sectional view of a conventional swash plate piston pump motor.
Figure 2a is a plan view of a conventional swash plate support.
FIG. 2B is a cross-sectional view taken along the line AA of FIG. 2A.
Figure 3 is a rear view showing a state in which the deflective coating is formed on the swash plate of the swash plate piston pump according to the present invention.
4 is a sectional view taken along line BB of Fig.
Figure 5 is a rear view showing a state in which a defric coating is formed on the swash plate support of the swash plate piston pump according to the present invention.
6 is a cross-sectional view taken along line CC of FIG. 5.

이하, 본 발명을 실시하기 위한 구체적인 내용을 첨부된 예시도면에 의거 상세하게 설명한다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 사판식 피스톤펌프의 사판에 데프릭 코팅부를 형성한 모습을 도시한 배면도이고, 도 4는 도 3의 B-B선 단면도이다. Figure 3 is a rear view showing a state in which a defric coating is formed on the swash plate of the swash plate piston pump according to the present invention, Figure 4 is a cross-sectional view taken along line B-B of FIG.

도면에 도시된 바와 같이, 사판(100)의 양쪽 볼록부(110)에 데프릭 코팅부(defric coating)(120)를 형성한 구조를 가진다. As shown in the figure, it has a structure in which defric coating (120) is formed on both convex portions (110) of the swash plate (100).

상기 데프릭 코팅부(120)는 이류화 몰리브덴, 흑연, 이류화 텅스텐, 금속산화물, 불소수지(4불화 에틸렌) 등의 고체 피막 윤활제의 한 종류 또는 여러 종류를 필요한 용도에 따라 처리하고자 하는 대상물에 부착시키도록 유기수지로 분산시켜서 도료화하여 코팅한 것이다. The defric coating unit 120 may be applied to an object to be treated with one or several kinds of solid coating lubricants such as molybdenum dihydrate, graphite, tungsten dihydrate, metal oxide, fluororesin (ethylene tetrafluoride) and the like according to a necessary use. It is dispersed and coated with an organic resin so as to adhere and coated.

이러한 데프릭 코팅부(120)는 건조 윤활제로서 오일 그리스가 없는 상태로 윤활이 가능하고, 내하중성이 크고, 마찰계수가 작다.The defric coating 120 may be lubricated without oil grease as a dry lubricant, have a high load resistance, and have a low coefficient of friction.

또한, 내식성이 좋고, 사용 온도범위가 넓으며, 내유성이 있어서 일반유 그리스와 병용이 가능하고, 유해, 유독물질이 없다. In addition, it has good corrosion resistance, wide use temperature range and oil resistance, so that it can be used in combination with general oil grease, and there are no harmful or toxic substances.

또한, 데프릭 코팅부(120)의 피막두께는 15㎛ ~ 30㎛로 함이 바람직하다. In addition, the film thickness of the defric coating portion 120 is preferably 15㎛ ~ 30㎛.

본 실시 예에 따른 도 1 및 도 2에서 볼록부(110)에는 종방향으로 윤활유가 체류하면서 윤활작용을 하도록 하는 유로홈(111)이 형성되고, 양쪽 볼록부(110)의 사이 중앙에는 구동축이 관통되는 관통공(112)이 형성되어 있다.
1 and 2 according to the present embodiment, the convex portion 110 is formed with a flow path groove 111 for lubricating action while the lubricant stays in the longitudinal direction, and a driving shaft is formed at the center between the two convex portions 110. A through hole 112 is formed therethrough.

한편, 도 5는 본 발명에 따른 사판식 피스톤펌프의 사판 지지대에 데프릭 코팅부를 형성한 모습을 도시한 배면도이고, 도 6은 도 5의 C-C선 단면도이다. On the other hand, Figure 5 is a rear view showing a state in which a defric coating is formed on the swash plate support of the swash plate piston pump according to the present invention, Figure 6 is a cross-sectional view taken along line C-C of FIG.

도면에 도시된 바와 같이, 사판 지지대(200)도 마찬가지로 접촉면(210)에 데프릭 코팅부(220)를 형성한 구조를 가진다. As shown in the figure, the swash plate support 200 also has a structure in which a defric coating part 220 is formed on the contact surface 210.

도 5 및 도 6에 있어서, 접촉면(210)에는 윤활유가 유입되는 유입공(211)과, 이 유입공(211)을 통해 유입된 윤활유가 체류하면서 윤활작용이 가능하도록 종방햐응로 형성된 유로홈(212)이 형성되고, 사판 지지대(200)의 양쪽 접촉면(210) 사이의 중앙에는 구동축이 통과되도록 하는 관통공(213)이 형성된 구조이다.
5 and 6, the contact surface 210 has an inlet hole 211 through which lubricating oil flows, and a flow path groove formed in the longitudinal direction so that lubricating action is possible while the lubricating oil introduced through the inlet hole 211 remains. 212 is formed, and a through hole 213 is formed in the center between the contact surfaces 210 of the swash plate support 200 to allow the drive shaft to pass therethrough.

따라서, 본 발명은 사판식 피스톤 펌프의 가동시 사판(10)의 마모, 소착 및 스크래치의 발생을 방지할 수 있고, 종래에 비해 원활한 윤활작용이 가능한 것이다.
Therefore, the present invention can prevent abrasion, sintering and scratching of the swash plate 10 during operation of the swash plate piston pump, and smooth lubrication can be performed as compared with the related art.

이와 같이, 본 발명은 기술적 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면, 본 발명의 본질적인 특성에서 벗어나지 않는 범위 내에서 다양한 수정, 변경 및 치환이 가능할 것이다. 따라서, 본 발명에 개시된 실시 예 및 첨부된 도면은 본 발명의 기술적 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시 예 및 첨부된 도면에 의거 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. It will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100 : 사판
110 : 볼록부
120 : 데프릭 코팅부
200 : 사판 지지대
210 : 접촉면
220 : 데프릭 코팅부100: swash plate
110: convex portion
120: defric coating
200: swash plate support
210: contact surface
220: defric coating

Claims (2)

사판과, 이 사판을 지지하는 사판 지지대로 이루어진 사판식 피스톤 펌프에 있어서,
상기 사판의 볼록부에는 데프릭 코팅부가 형성된 것을 특징으로 하는 윤활이 원활한 사판식 피스톤 펌프.
In the swash plate type piston pump which consists of a swash plate and the swash plate support base which supports this swash plate,
Lubricated smooth swash plate piston pump, characterized in that the convex portion of the swash plate formed a defric coating.
청구항 1에 있어서,
상기 사판 지지대의 접촉면에 데프릭 코팅부가 형성된 것을 특징으로 하는 윤활이 원활한 사판식 피스톤 펌프.The method according to claim 1,
Lubricated smooth swash plate piston pump, characterized in that the deflective coating is formed on the contact surface of the swash plate support.
KR1020110121533A 2011-11-21 2011-11-21 Swash plate piston pump for smooth lubricating KR20130055874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110121533A KR20130055874A (en) 2011-11-21 2011-11-21 Swash plate piston pump for smooth lubricating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110121533A KR20130055874A (en) 2011-11-21 2011-11-21 Swash plate piston pump for smooth lubricating

Publications (1)

Publication Number Publication Date
KR20130055874A true KR20130055874A (en) 2013-05-29

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Application Number Title Priority Date Filing Date
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