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Connecting rod for internal combustion engine

一种内燃机、连杆的技术，应用在连杆、连杆轴承、活塞杆等方向，达到减小面压的效果

Inactive Publication Date: 2016-04-06
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the above-mentioned conventional connecting rod, since the inner peripheral surface of the constant inner diameter of the base material hole constituting the connecting hole is uniformly covered with the covering material, it is difficult to efficiently reduce the axial distance between the power transmission pin and the connecting hole. The surface pressure of the part in contact with the vicinity of the outer edge

Method used

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  • Connecting rod for internal combustion engine
  • Connecting rod for internal combustion engine
  • Connecting rod for internal combustion engine

Examples

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Effect test

Embodiment Construction

[0050] Hereinafter, one embodiment of the present invention will be described based on the drawings.

[0051] figure 1 It is a figure which schematically shows the internal combustion engine 1 which employs the connecting rod 10 of this embodiment. This internal combustion engine 1 is used in saddled vehicles such as motorcycles. In this figure, the arrow FR indicates the front when the vehicle is installed, and the arrow UP indicates the upper direction when the vehicle is installed.

[0052] Such as figure 1 As shown, a piston 3 is slidably accommodated in a cylinder portion 2 of an internal combustion engine 1 , and a crankshaft 5 is rotatably supported in a crankcase 4 below the cylinder portion 2 . A piston pin 6 extending radially is installed inside the piston 3 . A crank pin 8 is integrally provided on the crankshaft 5 so as to be eccentric to the rotation shaft 7 of the crankshaft 5 . In the case of the present embodiment, the piston pin 6 constitutes a power tra...

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PUM

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Abstract

The invention provides a connecting rod of an internal combustion engine capable of effectively reducing a surface pressured applied to a power transmission pin from position close to the end part at the axial outer side of a connecting hole. A base-material hole (15) is formed in a connecting-rod base material (14). A coating layer (16) formed by a connecting-rod base material (14) soft coating material is deposited on an inner peripheral surface of the base-material hole (15). The base-material hole (15) has a cylinder inner-surface portion (17) of a constant inner diameter, formed in a central region in an axial direction, and a tapered inner-surface portion (18) that is continuous with an axially outer side of the cylinder inner-surface portion (17) and is radially enlarged in an axially outward direction. The coating layer (16) has a first coating portion (19) and a second coating portion (20) deposited on the tapered inner-surface portion (18) to adjoin the first coating portion (19) and gradually increasing in material thickness in the axially outward direction.

Description

technical field [0001] The invention relates to connecting rods for internal combustion engines. Background technique [0002] In an internal combustion engine, a piston pin and a crank pin are connected by a connecting rod, thereby converting the reciprocating motion of the piston along the axis of the cylinder into the rotational motion of the crankshaft. A small-diameter connecting hole for connecting the piston pin is provided at one end of the connecting rod, and a large-diameter connecting hole for connecting the crankpin is provided at the other end of the connecting rod. [0003] On power transmission pins such as piston pins and crank pins, a large load acts from the edge of the connection hole of the connecting rod during the operation of the internal combustion engine. Therefore, in order to improve the wear resistance of the power transmission pin, there has been proposed a connecting rod in which the inner peripheral surface of the base material hole of the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C7/02
CPCF16C9/04F16C23/041F16J7/00F16C2240/60F16C2223/06F16C17/02F16C33/121F16C33/14F16C2223/30F16C2240/30F16C2360/22F16C2202/04B21K1/766
Inventor 向原穗高
Owner HONDA MOTOR CO LTD
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