Integrated gear and pedal starting device for internal combustion engine

A gear and integrated technology, applied in the direction of starting device with manual crank, engine starting, hoisting device, etc., can solve the problems of easy deterioration of metal molds, low strength of small-diameter gears, low production capacity, etc., and achieve filling pressure Effects that increase, increase intensity, and reduce volume

Active Publication Date: 2009-02-18
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result of this, metal molds are prone to deterioration, resulting in reduced productivity
[0008] Therefore, for the integrally formed gear disclosed in Patent Document 1, it is necessary to improve the problems of low strength of the small-diameter gear and low productivity due to low strength near the right-angled corner and low packing density in the middle of the small-diameter gear.

Method used

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  • Integrated gear and pedal starting device for internal combustion engine
  • Integrated gear and pedal starting device for internal combustion engine
  • Integrated gear and pedal starting device for internal combustion engine

Examples

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Embodiment Construction

[0056] The best mode for carrying out the present invention will be described below based on the drawings.

[0057] figure 1 It is a sectional view of the internal combustion engine of the present invention, and the structure of the internal combustion engine 10 is as follows: the appearance part is made of a crankcase 11, a cylinder block 12, a cylinder head 13 and a head cover 14, and a crankshaft 16 and a main shaft 17 are arranged parallel to each other on the crankcase 11. , countershaft 18 and kick start shaft 19, cylinder 21 is arranged on cylinder block 12, and piston 22 is accommodated in this cylinder 21 in the mode of free reciprocation, and this piston 22 is linked on the crankshaft 16 by connecting rod 23, in The cylinder head 13 is provided with an ignition spark plug 24 and a valve train 25 which is an air-cooled engine covered by the head cover 14 .

[0058] 26 is an inertia wheel (flywheel), 27 is the rotor of an alternator, 28 is a clutch mechanism, 29 is a tr...

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Abstract

The invention provides an integrally molded gear capable of inhibiting drop of strength of a pinion. A comparison example is indicated in figure 7(a). A hardened part (105) indicated by hatching can be provided by applying induction hardening on a pinion (104). Hardening depth at a perpendicular corner part (102), however, is very small. A vicinity of the perpendicular corner parts (102) becomes a fragile part when load acts on the pinion (104). Figure (b) indicates an embodiment. A hardened part (75) indicated by hatching can be provided by applying induction hardening on a pinion (53). Sufficient hardening depth can be secured although hardening depth at an inclined surface (57) is a little bit small. Consequently, strength of the pinion (53) is increased. Since a conventional perpendicular corner part is changed to the inclined surface, strength after hardening is averaged and strength of the pinion can be increased.

Description

technical field [0001] The invention relates to an integrally formed gear suitable for a kick starter of an internal combustion engine. Background technique [0002] An integrally formed gear with a small-diameter gear on the hub of a large-diameter gear. Although it is a special gear, it has the advantage that two gears can be arranged in a small space, and can be built into various rotary machines or rotary devices. middle. [0003] In Patent Document 1 (Japanese Unexamined Patent Publication No. 2004-138055, figure 1 ) discloses a technique of building an integrally formed gear into an internal combustion engine. [0004] In Patent Document 1 figure 1 In the figure, reference numeral 11 indicates a main driven gear, and reference numeral 21 indicates a starter driven gear, and both gears 11 and 21 form an integrally formed gear part. [0005] The tooth bottom surface of the starting driven gear 21 with a small diameter extends along the left-right direction in the fig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/17F02N3/04
Inventor 神户敬司山本一充木野吉隆成田正明
Owner HONDA MOTOR CO LTD
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