KR100264262B1 - Inserting material for sprocket of plastic camshaft - Google Patents

Inserting material for sprocket of plastic camshaft Download PDF

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Publication number
KR100264262B1
KR100264262B1 KR1019960041236A KR19960041236A KR100264262B1 KR 100264262 B1 KR100264262 B1 KR 100264262B1 KR 1019960041236 A KR1019960041236 A KR 1019960041236A KR 19960041236 A KR19960041236 A KR 19960041236A KR 100264262 B1 KR100264262 B1 KR 100264262B1
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KR
South Korea
Prior art keywords
sprocket
insert
camshaft
plastic
cam shaft
Prior art date
Application number
KR1019960041236A
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Korean (ko)
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KR19980022151A (en
Inventor
황의훈
Original Assignee
정몽규
현대자동차주식회사
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Priority to KR1019960041236A priority Critical patent/KR100264262B1/en
Publication of KR19980022151A publication Critical patent/KR19980022151A/en
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Publication of KR100264262B1 publication Critical patent/KR100264262B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/087—Sprockets

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Gears, Cams (AREA)

Abstract

PURPOSE: An insertion inserted into a plastic cam shaft sprocket is provided to enhance combining force with the sprocket by forming a stepped portion in the thickness side in a polygonal shape and by being made from a sintered material. CONSTITUTION: A plastic cam shaft sprocket(10) inserts an insertion(12) into a round hole in the center part. The insertion is in a polygonal shape with a stepped portion(14) in the thickness side. The sprocket contains a protrusion(15) in the center part. The insertion is made from a steam-processed sintered material and inserted into the center part of the sprocket rotated by a camshaft. Then, a pin is inserted to combine the insertion and the camshaft and thus the insertion transmits rotational force from the camshaft to the sprocket. Since the insertion is in the polygonal shape, the combining force with the sprocket is enhanced in the outer direction of torque. Due to the protrusion and the stepped portion, the insertion is prevented from being separated from the sprocket.

Description

플라스틱 캠 샤프트 스프로켓용 삽입재Insert for plastic camshaft sprocket

본 발명은 플라스틱 캠 샤프트 스프로켓용 삽입재에 관한 것으로, 보다 상세하게는 스프로켓의 성형시 캠축을 끼우는 삽입재의 두께부분에 단차를 형성하고 다각형의 형상으로 하며 재질을 소결제로 함으로써 스프로켓 몸체와의 체결력을 증대시키고 제작원가를 절감할 수 있는 플라스틱 캠 샤프트 스프로켓용 삽입재에 관한 것이다.The present invention relates to an insert for a plastic camshaft sprocket, and more particularly, to form a step in the thickness portion of the insert sandwiching the camshaft when forming the sprocket, and to have a polygonal shape, and the material is a sintering agent to improve the fastening force with the sprocket body. The present invention relates to an insert for a plastic camshaft sprocket that can increase and reduce manufacturing costs.

일반적으로 종래의 플라스틱 캠 샤프트 스프로켓은, 첨부도면 제2도에 도시된 바와 같이, 스프로켓(20)의 중심부 홀에 캠축을 핀으로 고정시켜 끼우게 되어 있고 상기 축을 끼우는 스프로켓의 중심부는 계속되는 사용으로 인해 마모가 쉽게 되므로 금속재로 만든 별도의 삽입재(22)를 사용해 왔다.In general, the plastic cam shaft sprocket of the related art, as shown in Figure 2 of the accompanying drawings, is to be pinned to the cam shaft in the central hole of the sprocket 20, the center of the sprocket fitting the shaft is due to continued use Since it is easy to wear, a separate insert 22 made of metal has been used.

그러나, 이와같은 기존의 플라스틱 캠 샤프트 스프로켓은 캠축을 끼우는 삽입재(22)의 형상이 원형이기 때문에 스프로켓 몸체(20)에 상기 삽입재(22)를 억지 끼워맞춤에 의해 결합시켰다 하더라도 몸체와의 체결력이 적어 캠축의 회전으로부터 오는 토오크를 제대로 전달하지 못하고 스틸 재질이었기 때문에 제작비용이 많이드는 단점이 있었던바 이에 대한 보완이 요구되어 왔다.However, since the conventional plastic cam shaft sprocket has a circular shape in which the insert member 22 that fits the camshaft has a circular shape, the fastening force with the body even if the insert member 22 is coupled to the sprocket body 20 by an interference fit. Because of this, the torque from the rotation of the camshaft was not properly transmitted, and because it was made of steel, the manufacturing cost was high.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 상기 스프로켓의 중심부에 끼워지는 삽입재의 두께부분에 단차를 형성하고 다각형 형상으로 하며 소결재의 재질을 사용함으로써 스프로켓 몸체와의 체결력을 증대시키고 제작원가를 절감을 할 수 있는 플라스틱 캠 샤프트 스프로켓용 삽입재를 제공하는 데 그 목적이 있는 것이다.Accordingly, the present invention is to solve the above problems, to form a step in the thickness portion of the insert fitted in the center of the sprocket and to have a polygonal shape to increase the fastening force with the sprocket body by using a sintered material The purpose is to provide a plastic camshaft sprocket insert that can reduce manufacturing costs.

제1도는 본 고안에 따른 플라스틱 캠 샤프트 스프로켓의 분리 사시도.1 is an exploded perspective view of the plastic camshaft sprocket according to the present invention.

제2도는 종래의 플라스틱 캠 샤프트 스프로켓의 분리 사시도.2 is an exploded perspective view of a conventional plastic camshaft sprocket.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 스프로켓 20 : 스프로켓10: sprocket 20: sprocket

12 : 삽입재 22 : 삽입재12: insert 22: insert

14 : 단차 15 : 돌출부14: step 15: protrusion

이하, 첨부도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 중심부에 캠축을 끼울 수 있도록 원형구멍이 형성된 삽입재(12)를 갖는 플라스틱 캠 샤프트 스프로켓(10)있어서, 상기 삽입재(12)의 형상이 다각형이고 두께방향으로 전면에 단차(14)가 형성되는 한편 상기 스프로켓 몸체(10)의 중앙부에 돌출부(15)가 형성되는 것을 특징으로 한다.The present invention has a plastic camshaft sprocket 10 having an insertion member 12 formed with a circular hole so as to fit the camshaft in the center thereof, wherein the shape of the insertion member 12 is polygonal and the step 14 is formed on the front surface in the thickness direction. While being formed is a protrusion 15 is formed in the central portion of the sprocket body (10).

상기 삽입재(12)의 재질은 스팀처리를 한 소결재를 사용하는 것을 특징으로 한다.The material of the insert 12 is characterized in that to use a sintered material subjected to steam treatment.

여기서, 상기 플라스틱 캠 샤프트 스프로켓용 삽입재(12)는, 첨부도면 제1도에 도시된 바와 같이, 캠축에 의해 회전하는 스프로켓(10)의 중심부에 삽입된다.Here, the plastic cam shaft sprocket insert 12 is inserted into the center of the sprocket 10 which is rotated by the cam shaft, as shown in FIG.

상기 삽입재(12)의 중심부에는 캠축이 끼워지는 원형의 구멍과 캠축을 삽입재에 고정시키기 위해 끼워지는 핀홀이 형성되어 있다.In the center of the insert 12 is formed a circular hole in which the cam shaft is fitted and a pin hole fitted to fix the cam shaft to the insert.

따라서, 상기 삽입재에 캠축이 끼워지고 그 상부로 핀이 삽입재와 캠축을 결합고정시키기 위해 끼워지고 나서 상기 삽입재(12)는 캠축이 회전하여 생긴 회전력을 스프로켓(10)에 전달하는 역할을 한다.Therefore, the camshaft is fitted to the insert and the pin is inserted thereon to securely fasten the insert and the camshaft. Then, the insert 12 serves to transmit the rotational force generated by the camshaft to the sprocket 10. do.

이때, 상기 삽입재(12)의 형상이 다각형이기 때문에 캠축과 같이 회전할 때 토오크 아웃방향으로의 체결력을 증대시킬 수 있게 되고 또한, 스프로켓(10) 몸체의 중심부 즉, 상기 삽입재와 결합되는 부분에 돌출부(15)를 형성하여 두께를 증대시키고 상기 삽입재(12)의 다각형 측면을 따라 두께방향으로 단차(14)를 형성하여 결합시킴으로서 상기 단차 효과에 의해 스프로켓(10)에 삽입재(12)를 삽입시키는 푸시 아웃방향으로의 체결력을 증대시키게 되어 축의 회전에 따라 스프로켓 몸체에서 삽입재가 조금씩 빠지게 되는 현상을 방지할 수 있게 된다.At this time, since the shape of the insert 12 is polygonal, it is possible to increase the tightening force in the torque out direction when rotating with the camshaft, and also the center portion of the body of the sprocket 10, that is, the portion coupled with the insert The protrusions 15 are formed on the inserts 12 to the sprockets 10 by the step effect by increasing the thickness and forming the step 14 in the thickness direction along the polygonal side of the insert 12. To increase the fastening force in the push-out direction for inserting the can be prevented the phenomenon that the insert from the sprocket body little by little as the shaft rotates.

여기서, 상기 삽입재의 재질에 스팀처리를 한 소결재를 적용함으로써 부식방지의 효과가 있고 제작원가를 절감할 수 있는 이점이 있다.Here, by applying the sintered material subjected to steam treatment to the material of the insert has the effect of preventing corrosion and reducing the manufacturing cost.

이상에서와 같이 본 발명에 따른 플라스틱 캠 샤프트 스프로켓용 삽입재에 의하면 삽입재의 두께부분에 단차를 형성하고 다각형으로 하며 재질을 소결제로 함으로써 스프로켓 몸체와의 체결력을 증대시키고 제작원가를 절감할 수 있는 이점이 있다.As described above, according to the insert for plastic cam shaft sprocket according to the present invention by forming a step in the thickness portion of the insert and the polygon and the sintering material to increase the fastening force with the sprocket body and to reduce the manufacturing cost There is this.

Claims (2)

중심부에 캠축을 끼울 수 있도록 원형구멍이 형성된 삽입재(12)를 갖는 플라스틱 캠 샤프트 스프로켓(10)있어서, 상기 삽입재(12)의 형상이 다각형이고 두께방향으로 전면에 단차(14)가 형성되는 한편 상기 스프로켓 몸체(10)의 중앙부에 돌출부(15)가 형성되는 것을 특징으로 하는 플라스틱 캠 샤프트 스프로켓용 삽입재.In the plastic camshaft sprocket (10) having an insertion member (12) formed with a circular hole so as to fit the camshaft in the center, the shape of the insert (12) is polygonal and the step (14) is formed on the front surface in the thickness direction. Meanwhile, the plastic cam shaft sprocket insert, characterized in that the protrusion 15 is formed in the central portion of the sprocket body (10). 제1항에 있어서, 상기 삽입재(12)의 재질은 스팀처리를 한 소결재를 사용하는 것을 특징으로 하는 플라스틱 캠 샤프트 스프로켓용 삽입재.The insert of claim 1, wherein the insert (12) is made of a sintered material subjected to steam treatment.
KR1019960041236A 1996-09-20 1996-09-20 Inserting material for sprocket of plastic camshaft KR100264262B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960041236A KR100264262B1 (en) 1996-09-20 1996-09-20 Inserting material for sprocket of plastic camshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960041236A KR100264262B1 (en) 1996-09-20 1996-09-20 Inserting material for sprocket of plastic camshaft

Publications (2)

Publication Number Publication Date
KR19980022151A KR19980022151A (en) 1998-07-06
KR100264262B1 true KR100264262B1 (en) 2000-08-16

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KR1019960041236A KR100264262B1 (en) 1996-09-20 1996-09-20 Inserting material for sprocket of plastic camshaft

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