JPS5870954U

JPS5870954U - Engine balance shaft - built-in pump

Info

Publication number: JPS5870954U
Application number: JP16741281U
Authority: JP
Inventors: 才田　高史; 佐々木　一衛
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 1981-11-09
Filing date: 1981-11-09
Publication date: 1983-05-13

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図はバランスシャフトを有する自動車エンジンの要
部説明図、第２図は第１図の■−■線断面図、第３図、
第４図はこの考案の第１実施例を示し、第３図はバラン
スシャフトのジャーナル部の拡大断面図（第４図の■−
■線断面図）、第４図は第３図のＩＶ−ＩＶ線断面図、
第５図、第６図はこの考案の第２実施例を示し、第５図
はバランスシャフトのジャーナル部の拡大断面図、第６
図は第５図のＶＩ−ＶＩ線断面図である。１・・・・・・エンジン、４・・・・・・クランクシャ
フト、５・・・・・・［動歯車、？・・・・・・バラン
スシャフト、８．　９゜１０・・・・・・ジャーナル、
１３．１４．１５・・・・・・軸受、１６．１６Ａ・・
・・・・バキュームポンプ、１７・・・・・・ロータ、
１８・・・・・・溝、１９−−−−−−ブレード、２０
・・・・・・ポンプ室、３０・・・・・・カム、３１・
・・・・・突部、３２・・・・・・凹部、３５・・・・
・・下部ケース、３ｉ・・・・・・上部ケース、３７・
・・・・・ダイヤフラム、３８・・・・・・ポンプ室。Ｊ第４図＝第６図Fig. 1 is an explanatory diagram of the main parts of an automobile engine having a balance shaft, Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1, Fig. 3,
Fig. 4 shows the first embodiment of this invention, and Fig. 3 is an enlarged sectional view of the journal portion of the balance shaft (Fig. 4 -
■A cross-sectional view along the line), Figure 4 is a cross-sectional view along the IV-IV line in Figure 3,
5 and 6 show a second embodiment of this invention, FIG. 5 is an enlarged sectional view of the journal portion of the balance shaft, and FIG.
The figure is a sectional view taken along the line VI-VI in FIG. 1... Engine, 4... Crankshaft, 5... [Moving gear,? ...Balance shaft, 8. 9゜10・・・Journal,
13.14.15...Bearing, 16.16A...
...Vacuum pump, 17...Rotor,
18...Groove, 19-----Blade, 20
...Pump chamber, 30...Cam, 31.
... Protrusion, 32 ... Concavity, 35 ...
・・Lower case, 3i・・・・Upper case, 37・
...Diaphragm, 38...Pump chamber. J Figure 4 = Figure 6

Claims

[Scope of utility model registration request]

(1) In an automobile engine having a balance shaft driven by gears from the crankshaft and having a journal rotatably supported by bearings attached to multiple locations on the crankcase, at least one of the bearing mounting portions of the crankcase A pump built into the engine's balance shaft, characterized by a journal-driven pump being integrated into the engine balance shaft.

(2) The pump has an appropriate number of grooves radially formed at the same pitch, has blades fitted into each groove, and has a rotor attached to a journal of a balance shaft, and accommodates this rotor. 2. The engine balance shaft-integrated pump according to claim 1, wherein the pump is installed in a bearing portion of the journal in an eccentric state with respect to a pump chamber power button.

(3) The pump is attached to the case with a pump chamber formed between the case and a plate-shaped cam having alternating protrusions and recesses and attached to the outer periphery of the journal of the balance shaft; A balance shaft for an engine according to claim 1, characterized in that the engine balance shaft has a diaphragm that is reciprocated by rotation of a cam to change the volume of a pump chamber, and is attached to a bearing part of the journal. Integrated pump.