JPH0334971U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案の電動式テレスコピツク型ス
テアリング装置の１実施例を示す主要部の垂直縦
断面図、第２図は第１図の要部拡大図、第３図は
第２図の部分拡大図、第４図は第１図の−線
拡大断面図、第５図は第１図の−線拡大断面
図、第６図は第１図の−線断面図である。 ４……アウタシヤフト、１６……インナシヤフ
ト、２８……テレスコシヤフト、２９……おねじ
、３１……伸縮操作用第１ナツト、３１ａ……ス
リーブ、３２……伸縮操作用第２ナツト、３３…
…めねじ、３４……おねじ。 Fig. 1 is a vertical cross-sectional view of the main parts showing one embodiment of the electric telescopic steering device of this invention, Fig. 2 is an enlarged view of the main parts of Fig. 1, and Fig. 3 is a partial enlargement of Fig. 2. 4 is an enlarged cross-sectional view taken along the line -- in FIG. 1, FIG. 5 is an enlarged cross-sectional view taken along the line -- in FIG. 1, and FIG. 6 is a cross-sectional view taken along the line -- in FIG. 4... Outer shaft, 16... Inner shaft, 28... Telescopic shaft, 29... Male thread, 31... First nut for telescopic operation, 31a... Sleeve, 32... Second nut for telescopic operation, 33...
...Female thread, 34...Male thread.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 中空状アウタシヤフトと、相互に回転はしない
が軸方向に移動しうるとともに、前端がアウタシ
ヤフト内に入り込むようにアウタシヤフト内に挿
入された中空状インナシヤフトと、前部に所定長
さにわたつておねじが形成されかつインナシヤフ
トおよびアウタシヤフト内を貫通した回転自在の
テレスコシヤフトと、インナシヤフトの後方に設
けられかつテレスコシヤフトを回転させる回転駆
動装置とを備えており、テレスコシヤフトのおね
じのまわりにねじ嵌められた伸縮操作用第１ナツ
トがアウタシヤフト内の前端部に固定され、伸縮
操作用第１ナツトに前方に突出したスリーブが一
体的に形成され、スリーブの内周面にめねじが形
成され、テレスコシヤフトのおねじのまわりに、
外周面にスリーブのめねじにねじ嵌められかつ該
めねじよりピツチの大きいおねじが形成された伸
縮操作用第２ナツトがねじ嵌められ、テレスコシ
ヤフトの回転によつてインナシヤフトがアウタシ
ヤフトに対して進退するようになされ、両ナツト
の間に、第２ナツトを第１ナツトに対して前後い
ずれかの方向に進めるように付勢する捩じりばね
が配置されている電動式テレスコピツク型ステア
リング装置。 a hollow outer shaft, a hollow inner shaft that does not rotate with respect to each other but is movable in the axial direction and is inserted into the outer shaft so that its front end fits into the outer shaft; It is equipped with a rotatable telescopic shaft in which a rotatable telescopic shaft is formed and passes through the inner shaft and the outer shaft, and a rotary drive device that is provided behind the inner shaft and rotates the telescopic shaft. The fitted first nut for telescopic operation is fixed to the front end within the outer shaft, a sleeve protruding forward is integrally formed with the first nut for telescopic operation, and a female thread is formed on the inner peripheral surface of the sleeve, Around the male thread of the telescopic shaft,
A second nut for telescopic operation, which is screwed into the female thread of the sleeve and has a male thread with a larger pitch than the female thread, is screwed onto the outer circumferential surface, and the inner shaft is rotated against the outer shaft by the rotation of the telescopic shaft. An electric telescopic steering device that moves forward and backward, and has a torsion spring disposed between both nuts that urges the second nut to move forward or backward relative to the first nut.