KR950011902A

KR950011902A - Low friction oil pump

Info

Publication number: KR950011902A
Application number: KR1019930021017A
Authority: KR
Inventors: 박상모
Original assignee: 한승준; 기아자동차 주식회사
Priority date: 1993-10-11
Filing date: 1993-10-11
Publication date: 1995-05-16

Abstract

본 발명은 로우터식 오일펌프에 있어 바깥쪽로우터의 바같둘레면과 보디의 로우터접촉원주면과의 미끄럼구름 접촉 단위면적을 최소화하여 접촉 마찰에 의한 마모의 손실과, 이와 동반하여 접촉 마찰의 소음을 줄일 수 있는 저마찰 오일 펌프에 관한 것으로, 구동축(60)과 연결되어 회전되는 안쪽로우터(40)의 회전에 의하여, 보디(11)의 로우터 접촉원주면(20)에 미끄럼 접촉되는 바같쪽로우터(50)의 오목부(51)의 오목부(51)와 상기 안쪽로우터(40)의 볼록부(41)가 맞물림 구동되도록 되어, 오일이 흡입구(12)에서 토출구(13)를 통하여 펌프 작용이 이루어지도록 하는 오일펌프에 있어서 상기 보디(11)의 로우터접촉 원주면(20)에 일정 깊이를 가지는 요홈을 형성하여, 바깥쪽로우터(50)의 바깥둘레면(52)과 상기 로우터접촉원주면(20)의 접촉 단위 면적을 최소화한 것이다.The present invention minimizes the sliding unit contact area between the bar circumferential surface of the outer rotor and the rotor contact circumferential surface of the body in the rotor-type oil pump, thereby minimizing wear loss due to contact friction and accompanying noise of contact friction. The low friction oil pump that can be reduced, by the rotation of the inner rotor 40, which is connected to the drive shaft 60, by the rotation of the bar rotor (sliding contact with the rotor contact circumferential surface 20 of the body 11) The concave portion 51 of the concave portion 51 of the concave portion 51 and the convex portion 41 of the inner rotor 40 are driven to engage with each other, so that oil is pumped through the discharge port 13 at the inlet 12. In the oil pump to form a groove having a predetermined depth in the rotor contact circumferential surface 20 of the body 11, the outer circumferential surface 52 of the outer rotor 50 and the rotor contact circumferential surface 20 Minimizing contact unit area The.

Description

Low friction oil pump

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 오일펌프의 커버판을 생략한 상태의 저면도,1 is a bottom view with the cover plate of the oil pump omitted;

제2도는 종래의 보디케이싱내에 안팎의 로우터가 결합된 상태의 종단면도,2 is a longitudinal sectional view of a rotor coupled inside and outside in a conventional body casing,

제3도는 본 발명의 보디케이싱내에 안팎쪽 로우터가 결합된 상태의 종단면도,Figure 3 is a longitudinal cross-sectional view of the inner and outer rotor coupled in the body casing of the present invention,

제4도는 본 발명의 로우터접촉원주면 부분의 요부확대 단면도,4 is an enlarged cross-sectional view of the main portion of the rotor contact circumferential surface portion of the present invention;

제5도는 본 발명의 로우터접촉원주면 부위의 평면도.5 is a plan view of the rotor contact peripheral surface portion of the present invention.

Claims

By the rotation of the inner rotor connected to the drive shaft, the concave portion of the inner rotor and the block portion of the inner rotor which are in sliding contact with the rotor contact circumferential surface of the body are driven to engage with each other, so that oil is pumped through the discharge port at the inlet port. In the oil pump to be made, characterized in that to form a groove having a predetermined depth on the rotor contact circumferential surface of the body, to reduce the contact unit area of the outer peripheral surface of the outer rotor and the rotor contact circumferential surface Low friction oil pump.

The low friction oil pump according to claim 1, wherein the grooves are formed at equal intervals on the rotor contact circumferential surface.

The low friction oil pump according to claim 1, wherein the groove has a width smaller than that of the rotor contact circumferential surface.

The low friction oil pump according to claim 1 or 2, wherein the effect groove is formed around the rotor contact circumferential surface of a range where oil inlets and outlets do not penetrate each other.

※ Note: The disclosure is based on the initial application.