KR970046325A

KR970046325A - Tension Control of Timing Belt

Info

Publication number: KR970046325A
Application number: KR1019950069921A
Authority: KR
Inventors: 배덕환
Original assignee: 전성원; 현대자동차 주식회사
Priority date: 1995-12-30
Filing date: 1995-12-30
Publication date: 1997-07-26

Abstract

본 발명은 타이밍 벨트의 장력 조절장치에 관한 것으로, 엔진 감숙시와 같이 타이밍 벨트에 무리가 가는 작동이 가는 경우 벨트의 진동에 따라 소음이 커지고 장력조절장치의 내부 풀런저 역시 과도한 작동으로 마모가 발생되는 등의 문제점을 개선하기 위한 장력조절장치를 제공하기 위하여 풀리(6)를 접촉하면서 지나가는 타이밍 벨트(7)의 장력이 조절가능한 접촉수단(1)과; 실린더 내부 유압을 조절하기 위한 다이아 프램(2)과; 상단은 상기 접촉수단(1)의 아암(10)을 밀어올리거나 밀리기 위하여 접촉하는 로드(31)를 형성한 플런저(32)로 형성한 피스톤부재(3)와; 상기 피스톤 부재(3)의 하강력을 제어하기 위하여 실린더 내벽에 탄지된 탄발수단(4)과 하부 내벽(52)이 상부 내벽(53)의 직경보다 작게 되면서 턱부(54)를 형성하여 상기 플런저(32)의 하강 말기에 소정의 LDT특성에 의한 댐핑력의 증가를 얻기 위한 실린더 부재(5)를 포함하여 이루어지는 타이밍 벨트에 가해지는 급격한 충격에 예민하게 완충됨.The present invention relates to a tension control device of the timing belt, when the operation is excessively applied to the timing belt, such as when the engine is quiet, the noise increases according to the vibration of the belt and the internal puller of the tension control device also wear occurs due to excessive operation Contact means (1) for adjusting the tension of the timing belt (7) passing while contacting the pulley (6) to provide a tension adjusting device for improving the problems such as being; A diaphragm 2 for adjusting hydraulic pressure in the cylinder; An upper end of which comprises a piston member (3) formed of a plunger (32) having a rod (31) in contact for pushing up or pushing the arm (10) of the contact means (1); In order to control the lowering force of the piston member 3, the jaw lashing means 4 and the lower inner wall 52 held on the inner wall of the cylinder are smaller than the diameter of the upper inner wall 53 to form the jaw portion 54 to form the plunger ( At the end of the lowering of 32), it is sensitively shocked by the sudden shock applied to the timing belt including the cylinder member 5 for obtaining an increase in the damping force due to the predetermined LDT characteristic.

Description

Tension Control of Timing Belt

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

제1도는 종래 자동 탄력 조절장치의 단면도이다.1 is a cross-sectional view of a conventional automatic elasticity adjusting device.

제2도는 본 발명 자동 탄력 조잘장치의 단면도이다.2 is a cross-sectional view of the automatic resilient jaw device of the present invention.

Claims

In the tensioning device of the timing belt, the tension of the timing belt (7) passing while contacting the pulley (6) as one side is connected to the pulley (6) and the other is the contact arm (10) rotates at the shaft point Adjustable contact means 1; A diaphragm 2 for adjusting hydraulic pressure in the cylinder; The upper end forms a rod 31 which contacts to push up or push the arm 10 of the contact means 1, and the lower end is a check valve formed between the upper and lower cylinders of the diaphragm 2. A piston member (3) having a plunger (32) which is controlled while controlling the pressure difference between the upper pressure and the lower pressure of the hydraulic pressure; Ballistic means (4) supported on the inner wall of the cylinder to control the lowering force of the piston member (3) at the bottom of the piston member (3); In the outer part, the fixed housing 51 and the rod 31 of the diaphragm 2 and the piston member 3 for controlling the internal pressure are formed to be protruding, and the rod 31 of the piston member 3 is mounted inside. ) And the plunger is formed by forming the piston member (3) and the carburetor (4) therein while the lower inner wall (52) is smaller than the diameter of the upper inner wall (53). And a cylinder member (5) for obtaining an increase in damping force due to a predetermined LDT characteristic at the end of the lowering of (32).

The apparatus of claim 1, wherein the diameter difference for obtaining the LDT characteristic is determined by the following formula.

LDT =

In the above formula

d: plunger diameter, δ: clearance,

P: Pressure, L: Plunger Length