JPH0348149U

JPH0348149U -

Info

Publication number: JPH0348149U
Application number: JP1989107972U
Authority: JP
Priority date: 1989-09-14
Filing date: 1989-09-14
Publication date: 1991-05-08
Anticipated expiration: 2004-09-14
Also published as: JPH073080Y2

Description

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

第１図は本考案の第１実施例の一部を切欠いた
側面図、第２図は同下面図、第３図は一部を切欠
いた同正面図、第４図は第３図の要部分解斜視図
、第５図は第１図の−線断面図、第６図は第
２実施例の一部を切欠いた側面図、第７図は第３
実施例の一部を切欠いた正面図、第８図は第７図
の要部分解斜視図、第９図はラツクピニオン装置
の第１従来例の斜視図、第１０図はその分解斜視
図、第１１図は第２従来例の斜視図である。図中、２０……ラツク、２１……転動体転動溝
、２２……ラツク歯、２３……ラツクボツクス、
２４……ボツクス本体、２５……エンドキヤツプ
、２７……転動体転動溝、３０……湾曲路、Ｂ…
…転動体、４０ａ，５５……ピニオン軸、４３…
…貫通孔、４４……凹部、４５……メネジ。 Fig. 1 is a partially cutaway side view of the first embodiment of the present invention, Fig. 2 is a bottom view of the same, Fig. 3 is a partially cutaway front view of the same, and Fig. 4 is the main part of Fig. 3. 5 is a sectional view taken along the line -- in FIG. 1, FIG. 6 is a partially cutaway side view of the second embodiment, and FIG.
8 is an exploded perspective view of the main part of FIG. 7; FIG. 9 is a perspective view of the first conventional example of the rack and pinion device; FIG. 10 is an exploded perspective view thereof; FIG. 11 is a perspective view of a second conventional example. In the figure, 20...Rack, 21...Rolling element rolling groove, 22...Rack tooth, 23...Rack box,
24... Box body, 25... End cap, 27... Rolling element rolling groove, 30... Curved path, B...
...Rolling element, 40a, 55...Pinion shaft, 43...
...through hole, 44...recess, 45...female thread.

Claims

【実用新案登録請求の範囲】 (1) 両側面に軸方向の転動体転動溝を有すると
共に転動体転動溝を有しない一面には軸方向にラ
ツク歯を有して延長されたラツクと、該ラツクに
軸方向移動可能に跨架されると共に前記ラツク歯
に噛み合うピニオンが軸受を介して回転自在に内
蔵されたラツクボツクスとを備え、該ラツクボツ
クスは前記ラツクの転動体転動溝に対向する転動
体転動溝を内側面に、これに平行する転動体戻り
通路を肉厚内に、それぞれ有するボツクス本体と
、該ボツクス本体の端部に接合され前記転動体戻
り通路と転動体転動溝とを連通せしめる半ドーナ
ツ状に湾曲した湾曲路を有するエンドキヤツプと
、前記相対する両転動体転動溝内に転動自在に挿
入された多数の転動体とを有し、且つ前記ピニオ
ンに入力または出力用のピニオン軸が連結されて
いることを特徴とするラツクピニオン装置。 (2) 前記ラツクボツクスには、該ラツクボツク
スを貫通するラツクボツクス取付用の貫通孔が複
数本設けられ、各貫通孔の両端部にメネジ部とボ
ルト頭が収納される凹部とを有している請求項(1
)記載のラツクピニオン装置。 (3) 前記ピニオンの軸受は軸方向に内輪固定で
予圧され、その予圧方向が前記ラツクに跨架され
たラツクボツクスの両袖部の対向間隔をせばめる
方向とされたことを特徴とする請求項(1)記載の
ラツクピニオン装置。[Claims for Utility Model Registration] (1) An extended rack having rolling grooves for rolling elements in the axial direction on both sides and having rack teeth in the axial direction on one side that does not have rolling grooves for the rolling elements. , a rack box that is movably straddled over the rack in the axial direction and in which a pinion that engages with the teeth of the rack is rotatably built in via a bearing, and the rack box faces the rolling groove of the rolling element of the rack. A box body having a rolling element rolling groove on the inner surface and a rolling element return passage parallel to the inner surface within the wall thickness, and a box body having the rolling element return passage and the rolling element rolling groove joined to an end of the box body. an end cap having a curved path curved in a semi-doughnut shape that communicates with the pinion; and a number of rolling elements that are rotatably inserted into the opposing rolling element rolling grooves, and an input to the pinion. Or a rack and pinion device characterized in that an output pinion shaft is connected. (2) The rack box is provided with a plurality of through holes for mounting the rack box that pass through the rack box, and each through hole has a female screw portion and a recessed portion in which a bolt head is accommodated at both ends. (1
) The rack and pinion device described in ). (3) The bearing of the pinion is preloaded in the axial direction with the inner ring fixed, and the direction of the preload is a direction that narrows the opposing distance between both sleeves of the rack box straddled by the rack. (1) The rack and pinion device described in (1).