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Pulser plate mounting structure

A pulse generator and structure technology, applied in the direction of coupling, engine control, rigid shaft coupling, etc., can solve the problems of difficulty in improving the positioning accuracy of the pulse generator plate, poor productivity, and many processing hours, etc., to achieve High degree of freedom, good productivity, and the effect of improving productivity

Inactive Publication Date: 2012-07-25
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the conventional installation structure of the above-mentioned pulse generator board, the key portion is formed by an L-shaped bent portion cut out from the pulse generator board on one end surface side of the pulse generator board. It is supported on the pulse generator plate in a cantilever type, so the rigidity is low, and it is difficult to improve the positioning accuracy of the pulse generator plate relative to the crankshaft. Angle and other finishing, so the processing man-hours are many, the productivity is not good

Method used

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Examples

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Comparison scheme
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no. 1 example

[0057] First, from Figure 1 ~ Figure 3 The description begins with the illustrated first embodiment of the invention. exist figure 1 and figure 2 Among them, the crankshaft C is a crankshaft for a multi-cylinder internal combustion engine, which has: a plurality of journals 1 supported by a plurality of main bearings of the crankcase; a plurality of crankpins 2 connected with the large ends of a plurality of connecting rods; and A plurality of crank arms 3 that are integrally connected between adjacent journals 1 and crank pins 2, and counterweights 4 are integrally connected to each crank arm 3, and the counterweights 4 are separated from the central axis of the journal 1. Extends in the opposite direction to the crank arm 3 . In addition, a flange 5 is formed at one end of the crankshaft C, and a driven member such as a crank pulley or a flywheel is bolted to the flange 5 .

[0058] Such as figure 2 As shown, the crank arm 3 is formed so that its width is narrow in t...

no. 2 example

[0074] next, yes Figure 4 ~ Figure 7 A second embodiment of the invention is shown for illustration.

[0075] Each boss 15 of the pulse generator plate P is in the shape of a bottomed ellipse cylinder, and the short diameter D1 of the ellipse cylindrical portion 15a is along the circumferential direction A of the pulse generator plate P, and the long diameter D2 is along the circumference direction A of the pulse generator plate P. The radial direction B is configured.

[0076] However, the wall thickness of the pulse generator plate P produced by stamping is relatively thin. Therefore, when the torque of the crankshaft C fluctuates during the operation of the engine, the plate-shaped part between adjacent bosses 15 vibrates violently. In the second embodiment, since the cylindrical portion 15a of each boss 15 is formed such that the short diameter D1 is along the The circumferential direction A and major diameter D2 of the pulse generator plate P are along the elliptical c...

no. 3 example

[0079] next, yes Figure 8 A third embodiment of the invention is shown for illustration.

[0080] In this third embodiment, the cylindrical portion 15a of the boss 15 of the pulse generator plate P continuously connects a pair of arc wall portions 22 and a pair of straight wall portions 23 to form a small stamp shape in section, and the pair of circular The arc wall portions 22 face each other at a distance corresponding to the long diameter D2, and the pair of straight wall portions 23 face each other at a distance corresponding to the short diameter D1. At this time, similar to the above-mentioned embodiment, the cylindrical portion 15a of the boss 15 is arranged such that the short diameter D1 is along the circumferential direction A of the pulse generator plate P, and the long diameter D2 is along the radial direction B of the pulse generator plate P. configuration. The structure other than that is the same as the above-mentioned second embodiment, therefore, in Figur...

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Abstract

A pulser plate mounting structure in which a key groove (14) is formed in a mounting surface (10) of a rotation wall section (9) having a crank arm (3) and a counter weight (4), a key section (16) engaging with the key groove (14) is formed on a pulser plate (P) superposed on the mounting surface (10), and the pulser plate (P) is secured to the rotation wall section (9) by a securing member (18).The key section (16) is constructed from an arcuate band-like section (16a) arcuately projecting from the pulser plate (P) toward one end face of the pulser plate and engaging with the key groove (14), and from a pair of connection sections (16b) for integrally connecting both ends of the arcuate band-like section (16a) to the pulser plate (P). The pulser plate mounting structure enables highly accurately positioning of the pulser plate on a crankshaft and provides excellent productivity of the pulser plate.

Description

technical field [0001] The present invention relates to an improvement in the mounting structure of a pulse generator plate formed by forming a keyway on the end face of a rotating wall portion composed of a crank arm and a counterweight of a crankshaft for an internal combustion engine, and on the other hand, engaging the keyway with the above-mentioned keyway. A joint key portion is formed on the pulse generator plate overlapping with the above-mentioned end surface, and the pulse generator plate is fastened to the above-mentioned rotating wall portion with a fastening member. Background technique [0002] The mounting structure of the above-mentioned pulse generator board is known as disclosed in Patent Document 1. As shown in FIG. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 10-331681 [0004] In the conventional installation structure of the above-mentioned pulse generator board, the key portion is formed by an L-shaped bent portion cut out fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D35/00F16C3/12F16D1/08
Inventor 小林辉夫滨川丈
Owner HONDA MOTOR CO LTD
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