JPS602037U

JPS602037U - engine crankshaft structure

Info

Publication number: JPS602037U
Application number: JP9336083U
Authority: JP
Inventors: 進深沢
Original assignee: トヨタ自動車株式会社
Priority date: 1983-06-20
Filing date: 1983-06-20
Publication date: 1985-01-09

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はクランクシャフトの部分断面概略側面図、第２
図は従来技術に基づくクランクシャフトのジャーナル、
ピン、アーム、カウンタウェイトの配列側面模式図、第
３図は該アームとカウンタウェイトの軸方同視周方向配
列バランス模式図、第４図以下は考案の１実施例の説明
図であり、第４図は第３図相当模式図、第５図から第１
３図は第１図のＶ−■からｘｍ−ｘｍ断面図であり、第
１４図はクランクシャフトの部分拡大側面図である。２１．２２，２３．２４・・・ジャーナル、３５・・・
中位アーム、４１，４２，４３，４４，４５゜４６・・
・ピン、３１，３２，３３．３４，３５゜３６．３７．
３８．３９・・・アーム、１・・・クランクシャフト、
６１，６２．６５，６８．６９・・・カウンタウェイト
、ｄ・・・厚み。 −泪 −第７図Figure 1 is a partial cross-sectional schematic side view of the crankshaft;
The figure shows a crankshaft journal based on conventional technology.
FIG. 3 is a schematic side view of the arrangement of the pin, arm, and counterweight; FIG. 3 is a schematic diagram of the axial and circumferential arrangement balance of the arm and counterweight; FIG. The figure is a schematic diagram equivalent to Figure 3, and Figures 5 to 1.
3 is a sectional view taken along line V--xm in FIG. 1, and FIG. 14 is a partially enlarged side view of the crankshaft. 21.22, 23.24... Journal, 35...
Middle arm, 41, 42, 43, 44, 45° 46...
・Pin, 31, 32, 33.34, 35° 36.37.
38.39...Arm, 1...Crankshaft,
61, 62.65, 68.69...Counterweight, d...Thickness. -Tears-Figure 7

Claims

[Scope of utility model registration request]

In an engine crankshaft structure in which a plurality of pins and journals are connected via arms to an intermediate arm between a front end journal and a terminal end journal, each of the plurality of pins and journals are connected via arms, at least one each of the front and rear of the plurality of arms before and after the intermediate arm.
is not equipped with a counterweight axially symmetrically with respect to the intermediate arm, and the arm on the intermediate arm side of the arm not equipped with the counterweight is axially symmetrical with respect to the arm that is not equipped with the counterweight. An engine crankshaft structure characterized in that the thickness is increased and a fixed counterweight is balanced with respect to the crankshaft.