TH105993A

TH105993A - Cam chain tensioner system for internal combustion engines

Info

Publication number: TH105993A
Application number: TH901004617A
Authority: TH
Inventors: ทาเคชิคานาเอะ นาย; คานาเอะ นายทาเคชิ
Original assignee: นางสาวปรับโยชน์ ศรีกิจจาภรณ์; นายจักรพรรดิ์ มงคลสิทธิ์; นายต่อพงศ์ โทณะวณิก; นายบุญมา เตชะวณิช; ฮอนดา มอเตอร์ โก
Filing date: 2009-10-14
Publication date: 2011-01-28

Abstract

DC60 (30/06/58) ในการจัดให้มีระบบตัวปรับความตึงโซ่ลูกเบี้ยวซึ่งมีโครงสร้างอย่างเรียบง่ายโดยมี ส่วนประกอบจำนวนน้อยและได้รับการผลิตขึ้นมาโดยมีค่าใช้จ่ายต่ำนั้น ในระบบตัวปรับความตึงโซ่ลูกเบี้ยวสำหรับเครื่องยนต์สันดาปภายในนั้น รูนำ 37 ที่ซึ่ง ก้านกระทุ้ง 36 ได้รับการประกอบเข้าในนั้นจะได้รับการก่อรูปขึ้นมาที่ส่วนด้านล่างของห้องข้อเหวี่ยง 2L ในขณะที่ทำการเปิดอย่างน้อยที่สุดแล้วในลักษณะขึ้นทางด้านบน ถังพักน้ำมัน 40 ซึ่งเป็นส่วนเว้า ซึ่งได้รับการกดลงต่ำลงทางด้านล่างและทำการเปิดขึ้นทางด้านบนไปยังห้องโซ่ลูกเบี้ยว 2C จะได้รับ การก่อรูปขึ้นมาอย่างเป็นชิ้นเดียวกันในห้องข้อเหวี่ยง 2L ช่องเปิดในส่วนด้านบนของรูนำ 37 จะหัน หน้าเข้าหาด้านในของถังพักน้ำมัน 40 แก้ไข 30/06/58 ในการจัดให้มีระบบตัวปรับความตึงโซ่ลูกเบี้ยวซึ่งมีโครงสร้างอย่างเรียบง่ายโดยมี ส่วนประกอบจำนวนน้อยและได้รับการผลิตขึ้นมาโดยมีค่าใช้จ่ายต่ำนั้น ในระบบตัวปรับความตึงโซ่ลูกเบี้ยวสำหรับเครื่องยนต์สันดาปภายในนั้น รูนำ 37 ที่ซึ่ง ก้านกระทุ้ง 36 ได้รับการประกอบเข้าในนั้นจะได้รับการก่อรูปขึ้นมาที่ส่วนด้านล่างของห้องข้อเหวี่ยง 2L ในขณะที่ทำการเปิดอย่างน้อยที่สุดแล้วในลักษณะขึ้นทางด้านบน ถังพักน้ำมัน 40 ซึ่งเป็นส่วนเว้า ซึ่งได้รับการกดลงต่ำลงทางด้านล่างและทำการเปิดขึ้นทางด้านบนไปยังห้องโซ่ลูกเบี้ยว 2C จะได้รับ การก่อรูปขึ้นมาอย่างเป็นชิ้นเดียวกันในห้องข้อเหวี่ยง 2L ช่องเปิดในส่วนด้านบนของรูนำ 37 จะหัน หน้าเข้าหาด้านในของถังพักน้ำมัน 40 ------------------------------------------------------DC60 (30/06/58) In order to provide a simple structured cam chain tensioner system with few components and manufactured at low cost, in the cam chain tensioner system for internal combustion engines, a guide hole 37 into which the pushrod 36 is assembled is formed in the lower part of the crankcase 2L while opening at least upwards. An oil reservoir 40, a recess, which is pressed downwards and opened upwards into the cam chain chamber 2C, is formed integrally in the crankcase 2L. The opening in the upper part of the guide hole 37 faces the inside of the oil reservoir 40. Edit 30/06/58 In order to provide a simple structured cam chain tensioner system with few components and manufactured at low cost, In the cam chain tensioner system for internal combustion engines, a pilot hole 37 into which the pushrod 36 is mounted is formed in the lower portion of the crankcase 2L while opening at least upwards. A recessed oil pan 40, which is pressed downwards and opens upwards into the cam chain chamber 2C, is formed integrally in the crankcase 2L. The opening in the upper portion of the pilot hole 37 faces the inside of the oil pan 40. ------------------------------------------------------

Claims

1. A cam chain tensioner system for an internal combustion engine, comprising: a pressing member (31, 33) exerting pressure on a cam chain (23) forming a loop between the drive sprocket (12) and the follower sprocket (12) in the cam chain chamber (2C), wherein the drive sprocket (12) is mounted on the crankshaft (10) rotatably supported in the crankcase (2) of the internal combustion engine, the follower sprocket (12) is mounted on the camshaft (22) of the valve system; a pushrod (36) slidingly mounted in the guide hole (37) and in contact by pressure with the pressing member (31, 33); an oil chamber (37a) formed inside the guide hole (37), while being covered by a cover (45s) of the pushrod (36); A control valve (45), which is provided for the cover (45s) of the pushrod (36), and which allows oil to flow into the oil chamber (37a) and inhibits oil from flowing out of the oil chamber (37a); and a compression spring (47), which is adjusted in the oil chamber (37a), and which acts on the pushrod (36) in the direction in which it is extended by means of a cam chain tensioner system, which constantly applies a predetermined tension to the cam chain (23). It is characterized by a guide hole (37) being formed in the lower part of the crankcase (2L) that, while opening at least upwards, is formed. An oil reservoir (40) is formed integrally in the crankcase (2L), with the oil reservoir (40) being a concave part which is pressed downwards and opens upwards to The cam chain chamber (2C) and the upper opening of the guide hole (37) face the inside of the oil reservoir (40), whereby an oil guide line (50) is formed that is inclined beneath the drive sprocket (12). The oil guide line (50) extends from the wall surface of the crankcase (2L) bearing wall, with the wall surface on the cam chain chamber (2C) side. The bearing wall (2Lw) serves as the wall for the crankshaft (10), and the oil reservoir (40) is arranged beneath the lower end of the oil guide line (50).

2. The cam chain tensioner system for an internal combustion engine according to claim 1, characterized in that the upper opening, facing the inside of the oil reservoir (40), of the guide holes (37), is formed to open upwards as well as to the left and right sides by front and rear guide walls (39c, 39r) forming the upper part of the guide holes (37), wherein the front and rear guide walls (39c, 39r) extend to the inside of the oil reservoir (40). The pushrods (36) are fitted into the guide holes (37) and are supported slidably, being fixed at the front and rear by the front and rear guide walls (39c, 39r), and the left and right openings between the front and rear guide walls (39c, 39r) are aligned with the oil reservoir (40).

3. The cam chain tensioner system for an internal combustion engine according to claim 1 or claim 2, characterized in that the fuel tank (40) has a front fuel tank (40f) and a rear fuel tank (40r) formed side by side in the front-rear direction of the vehicle body, and the front fuel tank (40f) and the rear fuel tank (40r) are connected.

4. The cam chain tensioner system for an internal combustion engine according to claim 3, characterized in that the front oil reservoir (40f) is arranged under the lower end of the oil guide (50), the front wall (39f) of the front oil reservoir (40f) extends forward, the bottom surface of the front oil reservoir (40f) and the bottom surface of the rear oil reservoir (40r) are continuous while being inclined obliquely downward towards the rear, and the top opening of the guide hole (37) faces the rear oil reservoir (40r).

5. The cam chain tensioner system for the internal combustion engine according to claim 4, characterized in that the crankcase (2L) has an oil return passage (54) formed therein beneath the front wall (39f) extending forward of the front oil reservoir (40f).

6. A cam chain tensioner system for an internal combustion engine according to any one of claims 1 to 5, characterized in that one side wall, in the width direction of the vehicle body, of the fuel tank (40) formed in the crankcase (2L) is formed by means of a contact portion of the side wall plate (41), which is a split body part.

7. A cam chain tensioner system for an internal combustion engine according to any one of claims 1 to 6, characterized in that a pilot hole (37) is opened in the side wall of the crankcase (2L) and is formed so as to be inclined so that the lower end, which is covered by the tensioner bolt (46), of the pilot hole (37) is provided in a forward position in the vehicle body of the upper end of the pilot hole (37), and a drain bolt (55) for covering the drain bolt hole formed in the bottom wall of the crankcase (2L) is provided beneath the tensioner bolt (46) in the side view of the vehicle body.

8. A cam chain tensioner system for an internal combustion engine according to any one of claims 1 to 7, characterized in that the crankcase (2L) is separated by a separating wall (2Lw) into a cam chain chamber (2C) provided with an oil reservoir (40) and a transmission chamber (3S) arranged behind the cam chain chamber (2C) in the front-rear direction of the vehicle body, and a contact opening (52) is formed in a portion of the separating wall (2Lw) where that portion is arranged diagonally upwards towards the oil reservoir (40).

9. The cam chain tensioner system for an internal combustion engine according to any one of claims 1 to 8, characterized in that the internal combustion engine is mounted on the vehicle such that the crankshaft (10) is oriented in the direction of the width of the vehicle body, and the motor cell (60) and intermediate gears (63b, 63s) are arranged in the lower front portion of the crankcase (2), wherein the crankshaft (10) is rotatably supported therein. 1. The cam chain tensioner system for an internal combustion engine according to claim 9 is characterized in that the cylinder (4) extends from the upper front portion of the crankcase (2) while being slightly tilted forward, and the engine mounting bracket (70) is formed on the front wall of the crankcase (2) located beneath the cylinder (4) and above the motor cell (60). --------------------------------------------------------------