JPH0183671U

JPH0183671U -

Info

Publication number: JPH0183671U
Application number: JP1987180424U
Authority: JP
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-06-02

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例としての電動式パワ
ーステアリング装置の要部を示す断面図であり、
第２〜４図は本電動式パワーステアリング装置の
案出過程で提案された電動式パワーステアリング
装置を示すもので、第２図はその縦断面図、第３
図は第２図の―矢視断面図、第４図は第３図
の―矢視断面図であり、第５，６図は本電動
式パワーステアリング装置の案出過程で提案され
たもう一つの電動式パワーステアリング装置を示
すもので、第５図は入力軸の軸心線を中心として
側半部のみを第２図と対応させて示す断面図、第
６図は第５図の―矢視断面図である。４…ステアリングハンドル軸、１０…トーシヨ
ンバー、２６…電動機、２６ａ…電動機のケーシ
ング、２７…電動機の回転軸、２７ａ…ベアリン
グ、３３…ピニオン軸のステアリング歯車、３４
…車輪操向シヤフトとしてのラツク、３５…タイ
ロツド、５１…電磁コイル、６１，６２…ベアリ
ング、７０…電動機アツセンブリ、７２…フライ
ホイール、７４…リング、７４ａ…ピン穴、７５
…ロータ、７６…板ばね、７６ａ…ピン穴、７６
ｂ…内環部分、７６ｃ…外環部分、７６ｄ…放射
状のばね部分、７７…ピン、７８…環状のクラツ
チデイスク（クラツチ板）、７９…ピン、８１…
ギヤツプ調整用カラー、８１ａ…雌ねじ部、８２
…ロツクナツト、８３…ギヤツプ調整用穴、８４
…蓋部材、８６…クラツチギヤツプ調整機構、８
７…ロツクナツト、８７ａ…ワツシヤ、９３，９
４…ピン、９５…ストレーンゲージ、９６…リー
ド線、９７…中間軸、９８…ウオーム歯車（ウオ
ームギア）、９９…小径歯車、１００ａ，１００
ｂ…ベアリング、１０１…上カバー（ハウジング
）、１０２…ベアリング、１０３…入力軸、１０
５…操舵出力軸としてのピニオン軸、１０５ａ…
ピニオン軸の上部（筒状上部）、１０５ｂ…穴部
、１０６…軸受メタル、１０７，１０８…ベアリ
ング、１０９…キヤツプ、１１４…ハウジング、
１２８…クラツチ機構（電磁クラツチ）、１８９
…ウオームギヤ装置、１９０…ウオーム軸（出力
軸）、１９１…ウオーム、１９２…大径歯車、２
８０…歯車機構。 FIG. 1 is a sectional view showing the main parts of an electric power steering device as an embodiment of the present invention.
Figures 2 to 4 show the electric power steering device that was proposed in the process of devising the present electric power steering device.
The figure is a cross-sectional view taken in the direction of the arrow in FIG. 2, FIG. 4 is a cross-sectional view taken in the direction shown in the arrow in FIG. Fig. 5 is a cross-sectional view showing only the side half of the input shaft centered on the axis line of the input shaft in correspondence with Fig. 2, and Fig. 6 is a cross-sectional view shown by the - arrow in Fig. 5. FIG. 4...Steering handle shaft, 10...Torsion bar, 26...Electric motor, 26a...Casing of electric motor, 27...Rotating shaft of electric motor, 27a...Bearing, 33...Steering gear of pinion shaft, 34
... Rack as wheel steering shaft, 35... Tie rod, 51... Electromagnetic coil, 61, 62... Bearing, 70... Electric motor assembly, 72... Flywheel, 74... Ring, 74a... Pin hole, 75
...rotor, 76...plate spring, 76a...pin hole, 76
b...Inner ring portion, 76c...Outer ring portion, 76d...Radial spring portion, 77...Pin, 78...Annular clutch disk (clutch plate), 79...Pin, 81...
Gap adjustment collar, 81a...female thread part, 82
...Lock nut, 83...Gap adjustment hole, 84
...Lid member, 86...Clutch gap adjustment mechanism, 8
7... Locknut, 87a... Watshiya, 93,9
4... Pin, 95... Strain gauge, 96... Lead wire, 97... Intermediate shaft, 98... Worm gear (worm gear), 99... Small diameter gear, 100a, 100
b...bearing, 101...upper cover (housing), 102...bearing, 103...input shaft, 10
5...Pinion shaft as a steering output shaft, 105a...
Upper part of pinion shaft (cylindrical upper part), 105b...hole, 106...bearing metal, 107, 108...bearing, 109...cap, 114...housing,
128...Clutch mechanism (electromagnetic clutch), 189
... Worm gear device, 190 ... Worm shaft (output shaft), 191 ... Worm, 192 ... Large diameter gear, 2
80...Gear mechanism.

Claims

[Scope of utility model registration request]

The above electric power steering device includes an electric motor that operates based on steering torque input to a steering handle shaft, and a gear mechanism that transmits the rotational force of the electric motor to a steering output shaft coupled to a wheel steering shaft. A gear mechanism includes a worm that is attached so as to be connectable to a rotating shaft side of the electric motor and whose worm shaft direction is set to be perpendicular to the steering output shaft, a large diameter gear attached to the steering output shaft, and the above-mentioned large diameter gear. A worm gear is provided on an intermediate shaft interposed between the worm shaft and the steering output shaft and meshes with the worm, and a small diameter gear is provided on the intermediate shaft and meshes with the large diameter gear. An electric power steering device that is characterized by: