JPH0484854U

JPH0484854U -

Info

Publication number: JPH0484854U
Application number: JP12529490U
Authority: JP
Priority date: 1990-11-29
Filing date: 1990-11-29
Publication date: 1992-07-23
Anticipated expiration: 2005-11-13
Also published as: JPH0749102Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の動力伝達機構の
斜視図、第２図は第１図の従動側第１、第２スプ
ロケツト間から従動側第１スプロケツト側を見た
概略断面図、第３図は第２図中３−３矢視断面図
、第４図はエンジンのカム軸駆動の動力伝達部分
に第１実施例の動力伝達機構を設けた場合の概略
図、第５図は第２実施例の動力伝達機構における
第２図に相当する概略断面図、第６図は第３実施
例の動力伝達機構における第２図に相当する概略
断面図、第７図は第６図中７−７矢視断面図、第
８図は第４実施例の動力伝達機構における第２図
に相当する概略断面図、第９図は第８図中９−９
矢視断面図、第１０図は第５実施例の動力伝達機
構における第２図に相当する概略断面図、第１１
図は第１０図中１１−１１矢視断面図である。Ａ……駆動軸、Ｂ……従動軸、２０，１２０，
２２０，３２０，４２０……動力伝達機構、２１
……（駆動側）第１スプロケツト、２２，２２２
，３２２，４２２……（従動側）第１スプロケツ
ト、２３……第１チエーン、３１……（駆動側）
第２スプロケツト、３２，２３２，３３２，４３
２……（従動側）第２スプロケツト（回転自在の
スプロケツト）、３３……第２チエーン、５６，
２５６，３５６，４５６……ばね（弾性体）、５
７，１５７，２５７，３５７……回動規制手段、
４７０……変形規制手段。 FIG. 1 is a perspective view of a power transmission mechanism according to a first embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the first driven sprocket side seen from between the first and second sprockets on the driven side in FIG. 1. Fig. 3 is a sectional view taken along arrow 3-3 in Fig. 2, Fig. 4 is a schematic diagram of the case where the power transmission mechanism of the first embodiment is provided in the power transmission part of the engine's camshaft drive, and Fig. 5 is FIG. 6 is a schematic sectional view corresponding to FIG. 2 in the power transmission mechanism of the second embodiment, FIG. 6 is a schematic sectional view corresponding to FIG. 2 in the power transmission mechanism of the third embodiment, and FIG. 7 is in FIG. 7-7, a schematic sectional view corresponding to FIG. 2 in the power transmission mechanism of the fourth embodiment, and FIG. 9, 9-9 in FIG.
10 is a schematic sectional view corresponding to FIG. 2 in the power transmission mechanism of the fifth embodiment;
The figure is a sectional view taken along the line 11-11 in FIG. 10. A... Drive shaft, B... Driven shaft, 20, 120,
220, 320, 420...power transmission mechanism, 21
...(Drive side) 1st sprocket, 22, 222
, 322, 422... (driven side) first sprocket, 23... first chain, 31... (drive side)
2nd sprocket, 32, 232, 332, 43
2... (driven side) second sprocket (rotatable sprocket), 33... second chain, 56,
256,356,456... Spring (elastic body), 5
7,157,257,357... Rotation regulating means,
470...Deformation regulating means.

Claims

[Claims for Utility Model Registration] (1) First and second sprocket sets, each pair of which are provided on a drive shaft and a driven shaft, one sprocket on said one shaft being rotatable, and said first sprocket set. The first chain that spans the sprocket group, and the second
A second chain that spans the sprocket set is provided between the rotatable sprocket and the sprocket opposing the sprocket, and the outbound side of one chain and the return side of the other chain are stretched. an elastic body, and a rotation regulating means provided between the rotatable sprocket and a sprocket opposing the sprocket and regulating a rotation angle in at least one direction of the rotatable sprocket with respect to the opposing sprocket; A power transmission mechanism using a two-chain chain, characterized by having: (2) first and second sprocket sets provided in pairs on the drive shaft and driven shaft, one sprocket on said one shaft being rotatable; and a first sprocket set extending over said first sprocket set. chain, and the second
A second chain that spans the sprocket set is provided between the rotatable sprocket and the sprocket opposing the sprocket, and the outbound side of one chain and the return side of the other chain are stretched. 2, characterized in that it has an elastic body and a deformation regulating means provided between the rotatable sprocket and a sprocket opposing the sprocket and regulating deformation of the elastic body;
Power transmission mechanism using a chain.