JPH0780107B2 - Piston mounting device - Google Patents
Piston mounting deviceInfo
- Publication number
- JPH0780107B2 JPH0780107B2 JP62266482A JP26648287A JPH0780107B2 JP H0780107 B2 JPH0780107 B2 JP H0780107B2 JP 62266482 A JP62266482 A JP 62266482A JP 26648287 A JP26648287 A JP 26648287A JP H0780107 B2 JPH0780107 B2 JP H0780107B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- rack shaft
- rack
- connecting tool
- fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003825 pressing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Automatic Assembly (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ピストン（被装着体）を、比較的長尺なラッ
ク軸の中間に簡易かつ迅速に装着でき、しかも、そのラ
ック軸を傷つけないようにできるピストン装着装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention allows a piston (attached body) to be easily and quickly mounted in the middle of a relatively long rack shaft, and the rack shaft can be damaged. The present invention relates to a piston mounting device that can be prevented.
そのラックピニオン式のパワーステアリング装置におい
てのラック軸Ｒの中心に、パワーステアリング用のピス
トンＰ（被装着体）を取り付ける作業が存在したが、こ
の作業内のピストンＰ挿入は、入手にて行っており、所
定位置に移送後に、カシメ加工にて固着していた。In the rack and pinion type power steering device, there was a work for mounting the power steering piston P (attached body) at the center of the rack axis R, but the piston P insertion in this work was done by acquisition. However, after being transferred to a predetermined position, it was fixed by caulking.
そのピストンＰを、長尺なラック軸Ｒの中間箇所に、移
送する際に、まず、比較的厚みのあるピストンＰの滑り
移動作業中に、ラック軸Ｒの外表面にスリ傷を発生させ
ないことが必要であるし、迅速に移送することも要求さ
れる。When transferring the piston P to an intermediate portion of the long rack shaft R, first, during the sliding movement work of the piston P having a relatively large thickness, the scratches on the outer surface of the rack shaft R should not occur. Is required, and rapid transfer is required.
そのラック軸Ｒは、その製造方法によって左右端の凹部
RhのセンターO1位置と、外表面のセンターO2位置との間
に、加工方法や加工上の誤差等によるズレを生じること
があった（第10図参照）。その各々のセンター位置の偏
心量（ズレ）ｅは実際には数ミクロン乃至数十ミクロン
の誤差である。The rack axis R is a recess at the left and right ends depending on the manufacturing method.
Rh and the center O 1 position of, between the center O 2 position of the outer surface, there may occur a shift due to errors of machining methods and machining on (see FIG. 10). The eccentricity amount (deviation) e of each of the center positions is actually an error of several microns to several tens of microns.
また、ピストンＰの内径と、ラック軸Ｒの外径との公差
は、約数ミクロン程度であり、これだけの誤差があり、
メッキ等が付着されていれば、良好に挿通させることが
できる。しかるに、そのラック軸Ｒの端部においては、
自動化するにしても、センター位置ズレのため、そのピ
ストンＰ挿入の際に、ラック軸Ｒの表面にスリ傷等が発
生する欠点があった。これが自動的に装着できるものが
存在しなかった。Further, the tolerance between the inner diameter of the piston P and the outer diameter of the rack shaft R is about several microns, and there is such an error.
If plating or the like is attached, it can be satisfactorily inserted. However, at the end of the rack axis R,
Even if it is automated, there is a drawback that the surface of the rack shaft R is scratched when the piston P is inserted due to the displacement of the center position. There was nothing that could be fitted automatically.
そこで発明者は、前記問題点等を解決すべく鋭意，研究
を重ねた結果、本発明を、連結円筒部の一端をパワース
テアリング用のラック軸端に連結する，該ラック軸端外
径と略等しい内径を有する案内筒体とし，他端を前記ラ
ック軸を固定させる固定部に連結する側とし、内部には
外径に対して偏心可能で、且つ長手方向に弾発力に抗し
て摺動可能とした連結摺動体を設けた，パワーステアリ
ング用のピストンを遊挿する連結具と、該連結具を適宜
挟持させる挟持部と前記固定部と前記ピストンを押し出
すピストン押圧部とからなり、該ピストン押出部として
は水平移動手段の往復動にてピストンを所定長さ移動さ
せる，前記連結具を外挿する押出管とし、前記固定部と
連結具とラック軸とが直列状態に連結後に、前記押出管
にて前記ピストンがラック軸の中間箇所に移動され装着
されてなるピストン装着装置としたことにより、ピスト
ンを、比較的長尺なラック軸の中間に簡易かつ迅速に装
着でき、しかも、そのラック軸を傷つけないようにで
き、前記の課題を解決したものである。Therefore, as a result of earnest studies and researches to solve the above-mentioned problems, the inventor of the present invention connects the present invention with one end of the connecting cylindrical portion to the rack shaft end for power steering, and the outer diameter of the rack shaft end is approximately the same. The guide cylinder has the same inner diameter, the other end is connected to the fixing part for fixing the rack shaft, and the inside is eccentric to the outer diameter and slides in the longitudinal direction against the elastic force. A connecting tool provided with a movable connecting sliding body for loosely inserting a piston for power steering, a holding part for appropriately holding the connecting tool, the fixing part, and a piston pressing part for pushing out the piston. The piston push-out section is a push-out tube for moving the piston a predetermined length by the reciprocating movement of the horizontal moving means, and the connecting tool is externally inserted, and the fixing section, the connecting tool, and the rack shaft are connected in series, and The piston in the extrusion tube By using a piston mounting device that is moved and mounted in the middle of the rack shaft, the piston can be mounted easily and quickly in the middle of a relatively long rack shaft, and the rack shaft is not damaged. It is possible to solve the above problems.
以下、本発明の実施例を第１図乃至第13図に基づいて説
明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 13.
本発明は、第１図等に示すように、主に連結具A,挟持部
B,ピストン取付部Ｃよりなり、そのピストン取付部Ｃ
は、固定部C1及びピストン押出部C2よりなる。ラック軸
Ｒは、連結具Ａによってピストン取付部Ｃに連結される
ものである。また、連結具Ａは挟持部Ｂによって挟持又
は開放がなされる。As shown in FIG. 1 and the like, the present invention mainly includes a connecting tool A and a sandwiching portion.
B, piston mount C, and piston mount C
Consists of a fixed part C 1 and a piston pushing part C 2 . The rack shaft R is connected to the piston mounting portion C by a connecting tool A. Further, the connector A is clamped or released by the clamp B.
その連結具Ａについて詳述すると、まず、第４図等に示
すように、中空状の連結円筒部１の内面側に内径が狭く
なる摺動内面1aが形成されており、該摺動内面1aの両端
に、内径が急激に拡大する，段部1b,1bが形成されてい
る。連結円筒部１の一端（第４図において手前側，第７
図乃至第９図において右側）には、肉厚が僅かな（約0.
2mm程度）案内筒体1cが一体又は別体にて設けられてい
る。具体的には、連結円筒部１の一端の外周側面の肉厚
が僅かに薄く形成され、該箇所に、別部材の案内筒体1c
が挿入固着されている。The connecting tool A will be described in detail. First, as shown in FIG. 4 and the like, a sliding inner surface 1a having a narrow inner diameter is formed on the inner surface side of the hollow connecting cylindrical portion 1, and the sliding inner surface 1a is formed. Steps 1b and 1b are formed at both ends of which the inner diameter rapidly increases. One end of the connecting cylindrical portion 1 (the front side in FIG. 4, the seventh side
On the right side of Figures 9 to 9, the wall thickness is slight (about 0.
The guide cylinder 1c is provided integrally or separately. Specifically, the wall thickness of the outer peripheral side surface at one end of the connecting cylindrical portion 1 is formed to be slightly thin, and a guide cylinder 1c of another member is formed at that location.
Is inserted and fixed.
その連結円筒部１の内部には、摺動自在の連結摺動体２
が内装されている。連結摺動体２は、前記摺動内面1aの
内径よりは少し小径で、この長手方向の長さよりも大き
く形成された連結軸2aの両端に、該連結軸2aの直径より
も大径の，前部連結膨出部2bと後部連結膨出部2cが固着
されている。その前部連結膨出部2bと後部連結膨出部2c
とは、共に先端側が裁頭円錐状をなしており、その連結
軸2aが前記連結円筒部１の摺動内面1aを摺動するもので
ある。そして、連結摺動体２が、連結円筒部１内を摺動
するときには、前部連結膨出部2bと後部連結膨出部2cと
が段部1b,1bに適宜に当接し、一定の範囲のみ摺動する
構成となっている。その前部連結膨出部2bと，段部1bと
の間で、且つ連結軸2a上に、圧縮コイルスプリング３が
介在され、その前部連結膨出部2bの先端が、前記案内筒
体1cの先端よりは、所定距離ｓだけ突出するように形成
されている。特に、その連結摺動体２の連結軸2aの直径
が、連結円筒部１の摺動内面1aの内径よりは、少し小径
となっているために、第４図，第７図，第８図の状態で
は、前部連結膨出部2bが、第９図に示すように、偏心可
能に構成されている。Inside the connecting cylindrical portion 1, a slidable connecting sliding body 2 is provided.
Is decorated. The connecting slide body 2 has a diameter slightly smaller than the inner diameter of the sliding inner surface 1a, and has a diameter larger than the diameter of the connecting shaft 2a at both ends of the connecting shaft 2a formed larger than the length in the longitudinal direction. The partial connection bulging portion 2b and the rear connection bulging portion 2c are fixed. The front connecting bulge 2b and the rear connecting bulge 2c
Both have a truncated cone shape on the front end side, and the connecting shaft 2a thereof slides on the inner sliding surface 1a of the connecting cylindrical portion 1. When the connecting slide body 2 slides in the connecting cylindrical portion 1, the front connecting bulging portion 2b and the rear connecting bulging portion 2c appropriately contact the stepped portions 1b, 1b, and only within a certain range. It is configured to slide. A compression coil spring 3 is interposed between the front connecting bulging portion 2b and the step portion 1b and on the connecting shaft 2a, and the front end of the front connecting bulging portion 2b has the guide cylinder 1c. It is formed so as to protrude from the tip of by a predetermined distance s. Particularly, since the diameter of the connecting shaft 2a of the connecting slide body 2 is slightly smaller than the inner diameter of the sliding inner surface 1a of the connecting cylindrical portion 1, the connecting shaft 2a of FIG. 4, FIG. 7, and FIG. In the state, the front connecting bulging portion 2b is eccentrically configured as shown in FIG.
挟持部Ｂは、第５図，第６図に示すように、前記連結具
Ａの外周両側面から挟持するチャック4,4が油，空圧等
の作動手段５によって開閉する構成となっている。具体
的には、Ｖ字状の挟持面4a,4aを有するチャック4,4が左
右対称的に配置され、その左右方向（連結具Ａの軸方向
に直交する左右方向）に移動するものである。As shown in FIGS. 5 and 6, the holding part B has a structure in which chucks 4, 4 held from both sides of the outer circumference of the connecting tool A are opened and closed by an operating means 5 such as oil or air pressure. . Specifically, the chucks 4, 4 having V-shaped holding surfaces 4a, 4a are symmetrically arranged and move in the lateral direction (the lateral direction orthogonal to the axial direction of the connector A). .
ピストン取付部Ｃは、前述したように固定部C1及びピス
トン押出部C2よりなり、第11図，第12図に示すように、
その固定部C1では固定用シリンダー６が、垂直板７に固
着されている。固定用シリンダ６の摺動ロッド6aには、
連結用膨出部6bが設けられている。該連結用膨出部6bの
先端側に面取りされ、該先端が、前記連結円筒部１の後
部に同一軸心にて挿入連結される。The piston mounting portion C is composed of the fixed portion C 1 and the piston pushing portion C 2 as described above, and as shown in FIGS. 11 and 12,
The fixing cylinder 6 is fixed to the vertical plate 7 at the fixing portion C 1 . On the sliding rod 6a of the fixing cylinder 6,
A bulging portion 6b for connection is provided. The tip of the connecting bulging portion 6b is chamfered, and the tip is inserted and connected to the rear portion of the connecting cylindrical portion 1 with the same axis.
ピストン押出部C2は、移動用ベース９の上側部にに横設
した貫孔に、押出管８の一端が嵌入されている。該押出
管８の内径は、ラック軸Ｒの外径よりも大きな内径とな
っており、ラック軸Ｒが容易に遊挿自在の構成となって
いる。その移動用ベース９は、油圧又は空圧等の水平移
動手段2hの摺動ロッドh2によって適宜Ｘ方向に移動す
る。具体的には、非作動時においては、ピストン押出部
C2の押出管８の内径内に、前記固定用シリンダ６の摺動
ロッド6aが遊挿した状態で、且つ固定部C1に対してピス
トン押出部C2が近接している。そして、作動時において
は水平移動手段2hの摺動ロッドh2によって、ピストン押
出部C2は固定部C1に対して水平方向（第１図，第13図の
Ｘ方向）の右側（往路）又は左側（復路）に移動するよ
うに構成されている。In the piston pushing-out portion C 2 , one end of the pushing-out pipe 8 is fitted in a through hole provided in the upper side of the moving base 9 in a lateral direction. The inner diameter of the extruded pipe 8 is larger than the outer diameter of the rack shaft R, so that the rack shaft R can be easily inserted freely. The moving base 9 is appropriately moved in the X direction by the sliding rod h 2 of the horizontal moving means 2h such as hydraulic pressure or pneumatic pressure. Specifically, when not operating, the piston push-out section
The inner diameter of the extruded tube 8 C 2, in a state in which the sliding rod 6a of the fixed cylinder 6 is loosely inserted, the piston pushing portion C 2 and with respect to the fixed portion C 1 is close. Then, the sliding rod h 2 of the horizontal moving unit 2h in operation, the piston pushing portion C 2 is the right side of the horizontal direction with respect to the fixed portion C 1 (FIG. 1, X direction FIG. 13) (forward) Alternatively, it is configured to move to the left side (return path).
Ｄは主枠であって、第１図，第５図，第６図に示すよう
に、主台10の両側に側板11,11が設けられ、該対向する
両側板11,11間の上端の天板12箇所に、前記挟持部Ｂが
装着されている。また、主台10上にはピストン取付部Ｃ
の固定部C1の垂直板７の下端が固着されている。D is a main frame, as shown in FIG. 1, FIG. 5, and FIG. 6, side plates 11, 11 are provided on both sides of the main stand 10, and the upper ends of the opposite side plates 11, 11 are opposed to each other. The sandwiching portion B is attached to 12 places on the top plate. Also, on the main stand 10, the piston mounting part C
The lower end of the vertical plate 7 of the fixed portion C 1 is fixed.
その挟持部Ｂのチャック4,4にて、前記連結具Ａは、常
時、固定用シリンダ６の摺動ロッド6aのセンターの高さ
位置と同じ高さの位置に配置されている（第３図，第７
図，第８図参照）。On the chucks 4, 4 of the holding portion B, the connecting tool A is always arranged at the same height position as the center height position of the sliding rod 6a of the fixing cylinder 6 (Fig. 3). , 7th
(See Fig. 8).
主枠Ｄの主台10は、第３図，第５図に示すように、台座
ｂ上を油圧又は空圧等の横移動手段1hの摺動ロッドh1に
よってＸ方向に移動することができる。この移動は、連
結具Ａの先端と、ラック軸Ｒ端とを連結するためであ
る。その主台10の下面には摺動片10aが、台座ｂの上に
は、摺動片10aが摺動可能な蟻状溝b1が設けられてい
る。As shown in FIGS. 3 and 5, the main base 10 of the main frame D can be moved in the X direction on the base b by the sliding rod h 1 of the lateral moving means 1h such as hydraulic pressure or pneumatic pressure. . This movement is for connecting the tip of the connector A and the end of the rack shaft R. Its sliding pieces 10a on the lower surface of the main stand 10, on the pedestal b are sliding piece 10a is is slidable dovetail shaped groove b 1 are provided.
その台座ｂはベースａ上に配置されており、その台座ｂ
上に連結具A,挟持部B,ピストン取付部Ｃがまとめて配置
されている（第１図，第３図参照）。The pedestal b is arranged on the base a, and the pedestal b
The connector A, the sandwiching portion B, and the piston mounting portion C are collectively arranged on the top (see FIGS. 1 and 3).
Ｅはピストン供給部であって、第１図に示すように、ピ
ストン供給フレームの溝内を重力垂下させる。該ピスト
ン供給フレームの下端には、ピストングリップ等が設け
られ、このグリップが適宜開閉してピストンＰを供給す
るものである。この装置は周知の供給装置とすることも
ある。Reference numeral E denotes a piston supply portion, which hangs gravity in the groove of the piston supply frame as shown in FIG. A piston grip or the like is provided at the lower end of the piston supply frame, and the grip is appropriately opened and closed to supply the piston P. This device may be a known supply device.
なお、ラック軸Ｒは、殆どの部分がシャフト部で、その
長手方向中間にラック部Raが形成されている。13はラッ
ク軸ＲのＴ型支持杆であって、ベースａ上に垂設され、
特に、ピストン取付部Ｃのピストン押出部C2がラック軸
Ｒを摺動する際には、適宜下降するように構成されてい
る。Most of the rack axis R is a shaft portion, and a rack portion Ra is formed in the middle in the longitudinal direction. Reference numeral 13 is a T-shaped support rod for the rack shaft R, which is vertically installed on the base a.
In particular, when the piston push-out portion C 2 of the piston attachment portion C slides on the rack shaft R, it is configured to appropriately descend.
まず、挟持部Ｂのチャック4,4にて連結具Ａを挟持し、
ピストン取付部Ｃの連結用膨出部6bの軸心の高さに合わ
せ、ピストン供給部ＥよりピストンＰを所定位置にセッ
トする（第７図参照）。次に、固定用シリンダー６を作
動させて摺動ロッド6aを、第７図において右方向に摺動
して連結用膨出部6b端を、前記連結具Ａの後端（第７図
において左側端）に当接させ、且つその保持状態にある
ピストンＰの貫孔内に連結用膨出部6bを挿通させる（第
８図参照）。First, the connector A is clamped by the chucks 4, 4 of the clamping unit B,
The piston P is set at a predetermined position from the piston supply portion E in accordance with the height of the shaft center of the connecting bulging portion 6b of the piston mounting portion C (see FIG. 7). Next, the fixing cylinder 6 is operated to slide the sliding rod 6a to the right in FIG. 7 to move the end of the connecting bulge 6b to the rear end of the connecting tool A (left side in FIG. 7). End), and the connecting bulging portion 6b is inserted into the through hole of the piston P in the holding state (see FIG. 8).
次に、この状態を維持しつつ主枠Ｄを、第１図，第３図
において右方向（ラック軸Ｒがある方向）に、横移動手
段1hの摺動ロッドh1の進出にて移動させ、連結具Ａの前
端（案内筒体1cが成形されている側）を、ラック軸Ｒの
端部に連結する（第９図参照）。この連結状態を詳述す
ると、まず、ラック軸Ｒの外径のセンターO2と、端部の
ネジ穴を有するテーパー状の凹部RhのセンターO1が、例
え、偏心量ｅがあったとしても、その前部連結膨出部2b
が押圧されつつ、テーパー孔状の凹部Rhに入り、且つ案
内筒体1cにラック軸Ｒの端部が挿入されたときには、そ
の前部連結膨出部2bが偏心量ｅずれて、その案内筒体1c
とラック軸Ｒの外径とが一致した連結ができる。このと
き、連結摺動体２は第９図において左方向に移動し、こ
れによって、連結具Ａの後端（案内筒体1cが成形されて
いない側）の後部連結膨出部2cと、連結用膨出部6bとが
連結される。Next, while maintaining this state, the main frame D is moved to the right in FIG. 1 and FIG. 3 (the direction in which the rack axis R is located) by advancing the sliding rod h 1 of the lateral moving means 1h. The front end of the connector A (the side on which the guide cylinder 1c is formed) is connected to the end of the rack shaft R (see FIG. 9). This connection state will be described in detail. First, even if the center O 2 of the outer diameter of the rack shaft R and the center O 1 of the tapered recess Rh having the screw hole at the end have an eccentric amount e. , Its front connecting bulge 2b
When is pressed and enters the recessed portion Rh having a tapered hole shape, and the end of the rack shaft R is inserted into the guide cylinder 1c, the front connecting bulge 2b is displaced by the eccentric amount e and the guide cylinder Body 1c
And the outer diameter of the rack shaft R can be matched. At this time, the connecting sliding body 2 moves to the left in FIG. 9, whereby the rear connecting bulging portion 2c for connecting the rear end of the connecting tool A (the side on which the guide cylinder 1c is not molded) is connected. The bulging portion 6b is connected.
以上のように、連結具Ａと連結用膨出部6bとラック軸Ｒ
とが、第９図の状態のように、３つが連結状態となった
ときに、連結具Ａを、挟持部Ｂより開放する。次いで、
ピストン押出部C2を、水平移動手段2hの摺動ロッドh2を
第13図の右方向に進出させて、ラック軸Ｒのある側に移
動させ、その押出管８の先端で、ピストンＰを押圧し、
連結用膨出部6bより連結円筒部１を通過させて、ラック
軸ＲのピストンＰの装着箇所（溝部Rd）に移送を完了さ
せる（第13図右側端参照）。As described above, the connector A, the bulging portion 6b for connection, and the rack shaft R
When the three are in the connected state as in the state shown in FIG. 9, the connecting tool A is released from the holding portion B. Then
The piston pushing portion C 2 is moved to the side with the rack axis R by advancing the sliding rod h 2 of the horizontal moving means 2h to the right in FIG. 13, and the piston P is pushed at the tip of the pushing pipe 8 thereof. Press,
The connecting cylindrical portion 1 is passed from the connecting bulging portion 6b to complete the transfer to the mounting position (groove portion Rd) of the piston P of the rack shaft R (see the right end in FIG. 13).
本発明においては、連結円筒部１の一端をパワーステア
リング用のラック軸Ｒ端に連結する，該ラック軸Ｒ端外
径と略等しい内径を有する案内筒体1cとし，他端を前記
ラック軸Ｒを固定させる固定部C1に連結する側とし、内
部には外径に対して偏心可能で、且つ長手方向に弾発力
に抗して摺動可能とした連結摺動体２を設けた，パワー
ステアリング用のピストンＰを遊挿する連結具Ａと、該
連結具Ａを適宜挟持させる挟持部Ｂと前記固定部C1と前
記ピストンＰを押し出すピストン押圧部C2とからなり、
該ピストン押出部C2としては水平移動手段2hの往復動に
てピストンＰを所定長さ移動させる，前記連結具Ａを外
挿する押出管８とし、前記固定部C1と連結具Ａとラック
軸Ｒとが直列状態に連結後に、前記押出管８にて前記ピ
ストンＰがラック軸Ｒの中間箇所に移動され装着されて
なるピストン装着装置としたことにより、まず第１に極
めて迅速にピストンＰをラック軸Ｒに装着でき、省力化
を実現できるし、第２にピストン装着時においてラック
軸Ｒに傷を付けることを防止できる等の効果を奏する。In the present invention, one end of the connecting cylindrical portion 1 is connected to the end of the rack shaft R for power steering, and a guide cylinder 1c having an inner diameter substantially equal to the outer diameter of the end of the rack shaft R is provided, and the other end is the rack shaft R. The connecting slide body 2 is provided on the side connected to the fixed portion C 1 for fixing the inside of the body, which is eccentric to the outer diameter and slidable in the longitudinal direction against elastic force. It comprises a connector A for loosely inserting the steering piston P, a holding part B for properly holding the connecting device A, the fixed part C 1 and a piston pressing part C 2 for pushing out the piston P.
The piston push-out section C 2 is a push-out tube 8 for moving the piston P by a predetermined length by the reciprocating movement of the horizontal moving means 2h, and the connecting tool A is externally inserted, and the fixing section C 1 , the connecting tool A, and the rack. Firstly, the piston mounting device is constructed such that after the shaft R is connected in series, the piston P is moved to and mounted on the middle portion of the rack shaft R by the push-out pipe 8. Can be attached to the rack shaft R, and labor can be saved. Secondly, the rack shaft R can be prevented from being damaged when the piston is attached.
これらの効果について詳述すると、本発明においては、
連結具A,挟持部Ｂ及びピストン取付部Ｃよりなり、固定
部C1でピストンＰを遊挿させた後には、連結用膨出部6b
が固定用シリンダー６にて連結具Ａの連結円筒部１の一
端に当接が行われ、この状態を維持しつつ、連結具Ａの
他端がラック軸Ｒに当接され、連結具Ａにて固定部C1と
ラック軸Ｒとの連結を完了すると挟持部Ｂより連結具Ａ
が開放され、ピストン押出部C2が固定部C1より水平方向
に移動し、そのピストン押出部C2端にて，ピストンＰを
連結具Ａの連結円筒部１の外周側面を通過してラック軸
ＲにピストンＰを移送できるものである。In detail of these effects, in the present invention,
It is composed of a connecting tool A, a clamping portion B and a piston mounting portion C, and after the piston P is loosely inserted in the fixing portion C 1 , the bulging portion 6b for connection is formed.
Is brought into contact with one end of the connecting cylinder portion 1 of the connecting tool A by the fixing cylinder 6, and while maintaining this state, the other end of the connecting tool A is brought into contact with the rack shaft R, When the connection between the fixed part C 1 and the rack shaft R is completed,
Is released, the piston push-out portion C 2 moves horizontally from the fixed portion C 1 , and at the end of the piston push-out portion C 2 , the piston P passes through the outer peripheral side surface of the connecting cylindrical portion 1 of the connecting tool A and the rack. The piston P can be transferred to the shaft R.
これらの作業は、ピストン供給装置を設けることで、一
切人手を使わずに、ピストンＰをラック軸Ｒの中間ま
で、迅速に移動させることができる効果がある。即ち、
これら動作は一定の規則的な作動であるため、迅速に作
業を完了することができるし、作業員も不要であるため
省力化を実現することができるし、安全性を確保できる
利点もある。By providing a piston supply device for these operations, there is an effect that the piston P can be quickly moved to the middle of the rack axis R without using any human hands. That is,
Since these operations are constant and regular operations, the work can be completed promptly, and since no worker is required, labor can be saved and safety can be ensured.
また、実際には、ピストンＰの荷重（荷重）にて、且つ
方向を一定としつつ、ラック軸Ｒ上を単に摺動させて
も、そのラック軸Ｒの外周面には何等のスリ傷は発生し
ないのが通常であるが、人手によって行うと、そのピス
トンＰを往々にして僅かに傾けつつ、長尺なラック軸Ｒ
に無理に挿入することもあり、これだけでスリ傷がつく
欠点があった。しかるに、本発明のように機械化によ
り、その欠点は確実に解消できる。Further, in reality, even if the piston P is simply slid on the rack shaft R under the load (load) and keeping the direction constant, some scratches are generated on the outer peripheral surface of the rack shaft R. Normally, this is not done, but if done manually, the piston P is often tilted slightly and the long rack axis R
Sometimes it was forcibly inserted, and this had the drawback of scratching. However, mechanization as in the present invention can surely eliminate the drawback.
次に、そのラック軸Ｒは、その製造方法によって左右端
の凹部RhのセンターO1位置と、外表面のセンターO2位置
との間に、加工方法や加工上の誤差等によるズレを生じ
ることがあった（第10図参照）。その各々のセンター位
置のズレは実際には数ミクロン乃至数十ミクロンの誤差
である。この程度の誤差は、実際のラックピニオン式パ
ワーステアリング装置として車両に装着しても、何等の
影響を及ぼすものではない。Next, the rack axis R may be deviated from the center O 1 position of the recess Rh at the left and right ends and the center O 2 position of the outer surface due to the manufacturing method due to a processing method or a processing error. There was (see Figure 10). The deviation of the respective center positions is actually an error of several microns to several tens of microns. Such an error does not have any effect even if it is mounted on a vehicle as an actual rack and pinion type power steering device.
ところで、ピストンＰの内径と、ラック軸Ｒとの公差
は、約数ミクロン程度であり、これだけの公差で、メッ
キ等が付着されていれば、良好に挿通させることができ
る。そのラック軸Ｒの端部においては、僅かではある
が、センター位置ズレのため、そのピストンＰ挿入の際
に、自動化しても、ラック軸Ｒの表面にスリ傷等を発生
の恐れがあった。By the way, the tolerance between the inner diameter of the piston P and the rack axis R is about several microns, and with such tolerance, if the plating or the like is attached, it can be inserted properly. At the end of the rack shaft R, a slight misalignment of the center position caused a risk of scratches or the like on the surface of the rack shaft R even when the piston P was inserted even if it was automated. .
しかるに、本発明では、連結具Ａには、内部には外径に
対して偏心可能で、且つ長手方向に弾発力に抗して摺動
可能とした連結摺動体２を設け、連結円筒部１の一端を
パワーステアリング用のラック軸Ｒ端に連結する，該ラ
ック軸Ｒ端外径と略等しい内径を有する案内筒体1cとし
ているため、ラック軸Ｒの外表面のセンターO2位置（偏
心していない）と、偏心したラック軸Ｒの凹部RHのセン
ターO1位置とが存在しても、常に、その案内筒体1cの外
表面センターと、ラック軸Ｒの外表面のセンターO2とは
連結されて一致し、案内筒体1c外周面とラック軸Ｒの外
周面とが同一状態となり、さらに、その偏心したラック
軸Ｒの凹部RhのセンターO1位置には、案内筒体1cを端部
に設けた連結具Ａ内に外径に対して偏心可能で、且つ長
手方向に弾発力に抗して摺動可能と連結摺動体２が偏心
作用をなして該連結摺動体２とラック軸Ｒの凹部Rhのセ
ンターO1位置とが連結される。即ち、外径的には連結具
Ａとラック軸Ｒとは同一軸心をなし、例え、そのラック
軸Ｒの凹部RhのセンターO1位置が偏心していても、該偏
心量に応じて連結具Ａ内部の連結摺動体２が追随するこ
とができるものである。However, in the present invention, the coupling tool A is provided with the coupling slide body 2 which is eccentric with respect to the outer diameter and slidable in the longitudinal direction against the elastic force. 1 is connected to the end of the rack shaft R for power steering and has a guide cylinder 1c having an inner diameter substantially equal to the outer diameter of the end of the rack shaft R, the center O 2 position of the outer surface of the rack shaft R (Not centered) and the center O 1 position of the eccentric recess RH of the rack shaft R, the outer surface center of the guide cylinder 1c and the center O 2 of the outer surface of the rack shaft R are always The guide cylinder 1c is connected and coincides with each other, the outer peripheral surface of the guide cylinder 1c and the outer peripheral surface of the rack shaft R are in the same state, and the guide cylinder 1c is located at the center O 1 position of the eccentric recess Rh of the rack shaft R. Can be eccentric with respect to the outer diameter in the connector A provided in the section, and resists elastic force in the longitudinal direction. Slidable and connected slide 2 at an eccentric action and the center O 1 position of the recess Rh of the connecting slide 2 and the rack shaft R is connected. That is, in terms of outer diameter, the coupling tool A and the rack shaft R have the same axis, and even if the center O 1 position of the recess Rh of the rack axis R is eccentric, the coupling tool is in accordance with the eccentricity amount. The connecting slide body 2 inside A can follow.
このように、凹部RhのセンターO1位置が偏心していて
も、外径的には軸心の取付ができ、ピストンＰを連結具
Ａからラック軸Ｒに移送する際にも、ラック軸Ｒの表面
に傷をつけないでできる効果がある。このように傷を付
けないことで、ラック軸Ｒをパワーステアリング装置に
用いた場合に、油圧室を形成するシールとラック軸Ｒの
表面との間の油漏れの発生を防止できる利点がある。As described above, even if the center O 1 position of the recess Rh is eccentric, the shaft center can be attached in terms of the outer diameter, and even when the piston P is transferred from the connector A to the rack shaft R, the rack shaft R There is an effect that can be done without scratching the surface. By not scratching in this manner, there is an advantage that when the rack shaft R is used in a power steering device, oil leakage between the seal forming the hydraulic chamber and the surface of the rack shaft R can be prevented.
さらに、前記連結具Ａの内部に、連結摺動体２を設け
て、該両端が、前記ラック軸Ｒと固定部C1とに連結可能
としたので、連結具Ａの表面側の固着のみならず、内部
側の固着も可能となり、その連結具Ａと固定部C1とラッ
ク軸Ｒとの連結強度も増加し、万が一にも連結具Ａに何
等の外力が作用したとしても、連結具Ａが外れないよう
な安定した連結強度を有し、極めてスムーズに移送可能
なピストン装着装置を提供できる。Further, since the connecting slide body 2 is provided inside the connecting tool A and both ends thereof can be connected to the rack shaft R and the fixed portion C 1 , not only the front side of the connecting tool A is fixed. Also, the inner side can be fixed, and the connecting strength between the connecting tool A, the fixing portion C 1 and the rack shaft R is also increased. Even if any external force acts on the connecting tool A, the connecting tool A is It is possible to provide a piston mounting device that has a stable connection strength that does not come off and that can be transferred extremely smoothly.
以上のように、自動化したことで、そのピストンＰの移
送作業，ひいてはラック軸Ｒを安価に提供できると共
に、ラック軸Ｒの製品価値を上げることができる効果が
ある。As described above, the automation makes it possible to provide the piston P with a transfer operation, and thus to provide the rack shaft R at low cost, and to increase the product value of the rack shaft R.
図面は本発明の実施例を示すものであって、その第１図
は本発明の全体を示す略示図、第２図はピストン及びラ
ック軸の斜視図、第３図は本発明の要部側面図、第４図
は連結具の一部切除した斜視図、第５図は主枠個所の斜
視図、第６図は主枠個所の正面図、第７図乃至第９図は
ピストン移送する状態を示す断面図、第10図は第９図Ｘ
−Ｘ矢視断面図、第11図はピストン取付部の断面図、第
12図はピストン取付部の斜視図、第13図は本発明のピス
トン取付部にてピストンをラック軸上に移送する状態を
示す断面図である。 Ｐ……ピストン、Ｒ……ラック軸、 Ａ……連結具、Ｂ……挟持部、 Ｃ……ピストン取付部、C1……固定部、 C2……ピストン押出部、１……連結円筒部、 1c……案内筒体、1c……案内筒体、 ２……連結摺動体、８……押出管、 2h……水平移動手段。The drawings show an embodiment of the present invention. FIG. 1 is a schematic view showing the whole of the present invention, FIG. 2 is a perspective view of a piston and a rack shaft, and FIG. 3 is a main part of the present invention. FIG. 4 is a side view, FIG. 4 is a perspective view with a part of the connecting device cut away, FIG. 5 is a perspective view of a main frame portion, FIG. 6 is a front view of the main frame portion, and FIGS. Sectional view showing the state, FIG. 10 is FIG. 9 X
-X arrow sectional view, FIG. 11 is a sectional view of the piston mounting portion,
FIG. 12 is a perspective view of a piston mounting portion, and FIG. 13 is a sectional view showing a state where the piston is transferred onto the rack shaft by the piston mounting portion of the present invention. P ...... piston, R ...... rack shaft, A ...... coupling, B ...... clamping portion, C ...... piston attachment portion, C 1 ...... fixed part, C 2 ...... piston extrusion, 1 ...... connecting cylinder Part, 1c ... guide cylinder, 1c ... guide cylinder, 2 ... connecting sliding body, 8 ... extrusion tube, 2h ... horizontal moving means.
Claims (1)
のラック軸端に連結する，該ラック軸端外径と略等しい
内径を有する案内筒体とし，他端を前記ラック軸を固定
させる固定部に連結する側とし、内部には外径に対して
偏心可能で、且つ長手方向に弾発力に抗して摺動可能と
した連結摺動体を設けた，パワーステアリング用のピス
トンを遊挿する連結具と、該連結具を適宜挟持させる挟
持部と前記固定部と前記ピストンを押し出すピストン押
圧部とからなり、該ピストン押出部としては水平移動手
段の往復動にてピストンを所定長さ移動させる，前記連
結具を外挿する押出管とし、前記固定部と連結具とラッ
ク軸とが直列状態に連結後に、前記押出管にて前記ピス
トンがラック軸の中間箇所に移動され装着されてなるこ
とを特徴とするピストン装着装置。1. A fixing cylinder for connecting one end of a connecting cylinder part to a rack shaft end for power steering, the guide cylinder having an inner diameter substantially equal to the outer diameter of the rack shaft end, and the other end for fixing the rack shaft. The power steering piston is loosely inserted in the inside of which is provided a connecting slide body that is eccentric to the outer diameter and that can slide in the longitudinal direction against the elastic force. It comprises a connecting tool, a holding section for properly holding the connecting tool, the fixing section, and a piston pressing section for pushing out the piston. As the piston pushing section, the piston is moved by a predetermined length by the reciprocating movement of the horizontal moving means. An extruding pipe for externally inserting the connecting tool, and the piston is moved to and mounted at an intermediate position of the rack shaft by the extruding tube after the fixing portion, the connecting tool, and the rack shaft are connected in series. Characterized by Ton mounting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266482A JPH0780107B2 (en) | 1987-10-23 | 1987-10-23 | Piston mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62266482A JPH0780107B2 (en) | 1987-10-23 | 1987-10-23 | Piston mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01109040A JPH01109040A (en) | 1989-04-26 |
| JPH0780107B2 true JPH0780107B2 (en) | 1995-08-30 |
Family
ID=17431546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62266482A Expired - Lifetime JPH0780107B2 (en) | 1987-10-23 | 1987-10-23 | Piston mounting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0780107B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100756178B1 (en) * | 2004-02-09 | 2007-09-05 | 주식회사 만도 | Apparatus and method for inserting the piston into the rack bar |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116475746A (en) * | 2023-04-24 | 2023-07-25 | 徐州徐工基础工程机械有限公司 | An assembly tool for outriggers of a water well drilling rig and its working method |
-
1987
- 1987-10-23 JP JP62266482A patent/JPH0780107B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100756178B1 (en) * | 2004-02-09 | 2007-09-05 | 주식회사 만도 | Apparatus and method for inserting the piston into the rack bar |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01109040A (en) | 1989-04-26 |
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