JPS6435182U

JPS6435182U -

Info

Publication number: JPS6435182U
Application number: JP13221487U
Authority: JP
Priority date: 1987-08-28
Filing date: 1987-08-28
Publication date: 1989-03-03
Anticipated expiration: 2002-08-28
Also published as: JPH0519269Y2

Description

[Brief explanation of the drawing]

第１図は本発明の一実施例を示す後輪操舵装置
の横断平面図、第２図は本発明に係る後輪操舵装
置を組込んだ前後輪操舵車の全体概略図、第３図
は第１図の後輪操舵装置の縦断正面図、第４図は
第１図の―線に沿つて見た外観図、第５図は
第１図の―線に沿つて見たドライブギヤの組
付け状態を示す断面図、第６図は第３図の―
線に沿つて見たスリーブの組付け状態を示す断面
図、第７図は第３図の―線に沿つて見たスリ
ーブの組付け状態を示す断面図、第８図は第１図
の―に沿つて見た断面図、及び第９図は第１
図の―に沿つて見たフオーク及びレバーの組
付け状態を示す破断図である。符号の説明、Ａ……前輪操舵装置、Ｂ……後輪
操舵装置、Ｃ……制御装置、ＦＷ１，ＦＷ２……
前輪、ＲＷ１，ＲＷ２……後輪、２３……リレー
ロツド、２４，２５……ハウジング、２８……電
動モータ、３１……ギヤハウジング、３３……偏
心カム部材、３６……ドライブギヤ、３６ａ……
溝、３７……キー、４１……ボールナツト、４１
ａ……外スプライン部、４１ｂ……突起部、４６
……ドリブンギヤ、５１……スリーブ、５１ａ…
…外スプライン部、５１ｂ……内スプライン部、
５１ｃ……突起部、５３……内スプライン部材、
５４……スプリング、５５……フオーク、５６，
５７……ダイヤフラム型シリンダ、５８……ケー
ス、６１，６２……駆動ロツド、６４……レバー
。 FIG. 1 is a cross-sectional plan view of a rear wheel steering device according to an embodiment of the present invention, FIG. 2 is an overall schematic view of a front and rear wheel steered vehicle incorporating the rear wheel steering device according to the present invention, and FIG. Fig. 1 is a longitudinal sectional front view of the rear wheel steering device, Fig. 4 is an external view taken along the - line in Fig. 1, and Fig. 5 is a drive gear set taken along the - line in Fig. 1. A sectional view showing the attached state, Figure 6 is the same as in Figure 3.
7 is a cross-sectional view showing the assembled state of the sleeve as seen along the line of FIG. 3, FIG. 8 is a cross-sectional view showing the assembled state of the sleeve as seen along the line of FIG. The cross-sectional view taken along the
FIG. 2 is a cutaway view showing the assembled state of the fork and lever, taken along the line - in the figure. Explanation of symbols: A...Front wheel steering device, B...Rear wheel steering device, C...Control device, FW1, FW2...
Front wheel, RW1, RW2... Rear wheel, 23... Relay rod, 24, 25... Housing, 28... Electric motor, 31... Gear housing, 33... Eccentric cam member, 36... Drive gear, 36a...
Groove, 37...Key, 41...Ball nut, 41
a...Outer spline part, 41b...Protrusion part, 46
...Driven gear, 51...Sleeve, 51a...
...outer spline part, 51b...inner spline part,
51c...Protrusion, 53...Inner spline member,
54...Spring, 55...Fork, 56,
57...Diaphragm type cylinder, 58...Case, 61, 62...Driving rod, 64...Lever.

Claims

[Claims for Utility Model Registration] (1) A relay rod that is supported in a housing so as to be non-rotatable and displaceable in the axial direction and that steers the left and right rear wheels connected to both ends in response to the axial displacement, and on the outer periphery of the relay rod. a nut member that is screwed into the housing and is rotatably but undisplaceably supported in the housing and displaces the relay rod in the axial direction in response to rotation; and a first actuator that rotationally drives the nut member. In a front and rear wheel steered vehicle that is equipped with a rear wheel steering device and that steers the left and right rear wheels in conjunction with the front wheels by drive-controlling the first actuator in accordance with the steering of the front wheels, a non-rotatable and axially mounted vehicle is provided in the housing. A first engaging portion displaceably supported and displaceable on the outer circumference of the nut member and provided on the inner circumferential surface at a first position in the axial direction; and a second engaging portion provided on the outer circumferential surface of the nut member.
a sleeve that restricts rotation of the nut member by engaging with an engaging portion and releases the engagement at a second position in the axial direction;
1. A rear wheel steering restriction device in a front and rear wheel steered vehicle, comprising: a second actuator that is set at the first position or the second position. (2) The first engaging portion is a first protruding portion formed on the inner peripheral surface of the sleeve, and the second engaging portion is a second protruding portion formed on the outer peripheral surface of the nut member. A rear wheel steering regulating device for a front and rear wheel steered vehicle as set forth in claim 1 of the above-mentioned utility model registration, comprising: (3) The above-mentioned device, wherein the first engaging portion is formed of an internal spline formed on the inner circumferential surface of the sleeve, and the second engaging portion is formed of an external spline formed on the outer circumferential surface of the nut member. A rear wheel steering regulating device in a front and rear wheel steered vehicle as set forth in claim 1 of the utility model registration claim.