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JP2008184000A - Steering device - Google Patents

Steering device
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Publication number
JP2008184000A
JP2008184000AJP2007018257AJP2007018257AJP2008184000AJP 2008184000 AJP2008184000 AJP 2008184000AJP 2007018257 AJP2007018257 AJP 2007018257AJP 2007018257 AJP2007018257 AJP 2007018257AJP 2008184000 AJP2008184000 AJP 2008184000A
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JP
Japan
Prior art keywords
rack
shaft
steering
rack shaft
caulking
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.)
Pending
Application number
JP2007018257A
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Japanese (ja)
Inventor
Mitsuo Saito
充雄 斎藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
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Showa Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Showa CorpfiledCriticalShowa Corp
Priority to JP2007018257ApriorityCriticalpatent/JP2008184000A/en
Publication of JP2008184000ApublicationCriticalpatent/JP2008184000A/en
Pendinglegal-statusCriticalCurrent

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Abstract

Translated fromJapanese

【課題】 舵取装置において、ラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めを簡易かつ確実に行なえるようにすること。
【解決手段】 ギヤハウジング11にラック軸13を左右動可能に嵌挿し、ラック軸13の中空端部に形成した雌ねじ部13Aにラックエンド14の雄ねじ部14Aを螺着し、ラックエンド14に継手15を介してタイロッド16を連結してなる舵取装置10において、ラック軸13の中空端部に加締作業用孔部13Bを設け、この加締作業用孔部13Bに臨むラックエンド14の雄ねじ部14Aを加締加工してなるもの。
【選択図】 図2
PROBLEM TO BE SOLVED: To easily and reliably prevent loosening of a female screw part of a rack shaft and a male screw part of a rack end in a steering device.
A rack shaft 13 is fitted into a gear housing 11 so as to be movable in the left-right direction, a male screw portion 14A of a rack end 14 is screwed into a female screw portion 13A formed at a hollow end portion of the rack shaft 13, and a joint is attached to the rack end 14. In the steering apparatus 10 in which the tie rod 16 is connected via 15, a caulking work hole 13 </ b> B is provided at the hollow end of the rack shaft 13, and the male screw of the rack end 14 facing the caulking work hole 13 </ b> B. A part formed by caulking the part 14A.
[Selection] Figure 2

Description

Translated fromJapanese

本発明は舵取装置に関する。  The present invention relates to a steering apparatus.

一般に、ラックピニオン式舵取装置は、ステアリングホイールに連動して回転するピニオン軸のピニオン歯を、ギヤハウジングに左右動可能に嵌挿されたラック軸のラック歯を噛合いさせ、ラック軸の左右の中空端部に形成した雌ねじ部に左右のラックエンドの雄ねじ部を螺着し、左右のラックエンドに継手を介して左右のタイロッドを連結し、左右のタイロッドに左右の車輪を連結する。ステアリングホイールの回転に伴なうピニオン軸の回転に連動するラック軸の直線移動を、左右のタイロッドを介して左右の車輪に伝え、操舵可能にするものである。  Generally, a rack and pinion type steering device engages a pinion tooth of a pinion shaft that rotates in conjunction with a steering wheel with a rack tooth of a rack shaft that is fitted in a gear housing so as to be movable left and right. The left and right rack end male threaded portions are screwed into the female threaded portion formed in the hollow end portion of the left and right ends, the left and right tie rods are connected to the left and right rack ends via joints, and the left and right tie rods are connected to the left and right wheels. The linear movement of the rack shaft that is interlocked with the rotation of the pinion shaft accompanying the rotation of the steering wheel is transmitted to the left and right wheels via the left and right tie rods to enable steering.

特許文献1に記載の舵取装置では、ラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めを行なうため、それらの両者間にロックワッシャを介装している。ロックワッシャの係合爪をラック軸の端面に設けた係合溝に係合させるとともに、ロックワッシャの外周縁の加締部をラックエンドの外周平坦面に折り曲げて固定することにより、ラック軸とラックエンドを回り止めし、ひいてはラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めを図るものである。
特開平10-81245
In the steering apparatus described in Patent Document 1, a lock washer is interposed between the female screw portion of the rack shaft and the male screw portion of the rack end in order to prevent loosening. By engaging the engaging claw of the lock washer with the engaging groove provided on the end surface of the rack shaft, and bending and fixing the caulking portion on the outer peripheral edge of the lock washer to the outer peripheral flat surface of the rack end, The rack end is prevented from rotating, and as a result, the internal thread portion of the rack shaft and the external thread portion of the rack end are prevented from loosening.
JP 10-81245

特許文献1に記載の舵取装置には以下の問題点がある。
(1)ラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めを図るため、格別のゆるみ止め部品たるロックワッシャを必要とする。
The steering apparatus described in Patent Document 1 has the following problems.
(1) In order to prevent loosening of the female threaded part of the rack shaft and the male threaded part of the rack end, a special lock washer is required as a loosening prevention part.

(2)ラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めの確実を図るため、ロックワッシャをラック軸とラックエンドの双方に対する適宜位置に位置合せして組付ける必要があり、作業性も悪い。  (2) To ensure that the female screw part of the rack shaft and the male screw part of the rack end are not loosened, it is necessary to align the lock washer at an appropriate position with respect to both the rack shaft and the rack end, and to improve workability. bad.

本発明の課題は、舵取装置において、ラック軸の雌ねじ部とラックエンドの雄ねじ部のゆるみ止めを簡易かつ確実に行なえるようにすることにある。  An object of the present invention is to make it possible to easily and reliably prevent loosening of a female screw part of a rack shaft and a male screw part of a rack end in a steering device.

請求項1の発明は、ギヤハウジングにラック軸を左右動可能に嵌挿し、ラック軸の中空端部に形成した雌ねじ部にラックエンドの雄ねじ部を螺着し、ラックエンドに継手を介してタイロッドを連結してなる舵取装置において、ラック軸の中空端部に加締作業用孔部を設け、この加締作業用孔部に臨むラックエンドの雄ねじ部を加締加工してなるようにしたものである。  According to the first aspect of the present invention, a rack shaft is fitted into a gear housing so as to be movable left and right, a male thread portion of a rack end is screwed to a female thread portion formed at a hollow end portion of the rack shaft, and a tie rod is connected to the rack end via a joint. In the steering device in which the rack shafts are connected, a caulking work hole is provided at the hollow end of the rack shaft, and the male thread part of the rack end facing the caulking work hole is caulked. Is.

(請求項1)
(a)ロックワッシャ等の格別のゆるみ止め部品を用いることなく、部品点数を削減できる。
(Claim 1)
(a) The number of parts can be reduced without using a special locking part such as a lock washer.

(b)ラック軸の雌ねじ部にラックエンドの雄ねじ部を単に螺着し、ラック軸に設けた加締作業用孔部に挿入されるポンチ等の工具を用い、この孔部に臨むラックエンドの雄ねじ部を単に加締加工により圧壊してつぶし、ラックエンドの雄ねじ部をラック軸の雌ねじ部に対して螺動不能にし、ひいてはそれらのねじ部を簡易かつ確実にゆるみ止めするものになる。  (b) By simply screwing the male threaded part of the rack end into the female threaded part of the rack shaft and using a tool such as a punch inserted into the caulking work hole provided on the rack shaft, the rack end facing the hole The male threaded portion is simply crushed and crushed by caulking so that the male threaded portion of the rack end cannot be screwed with respect to the female threaded portion of the rack shaft, and the threaded portions are easily and reliably prevented from loosening.

図1は舵取装置を示す全体図、図2は図1の要部拡大図である。  FIG. 1 is an overall view showing a steering apparatus, and FIG. 2 is an enlarged view of a main part of FIG.

図1の舵取装置10は、電動パワーステアリング装置であり、ステアリングホイールが結合されるステアリングコラムシャフトと、ギヤハウジング11から突出するステアリングシャフト12とを連結し、ステアリングシャフト12にトーションバーを介してピニオン軸を連結してなる。そして、舵取装置10は、ギヤハウジング11にラック軸13を左右直線動可能に嵌挿し、このラック軸13のラック歯に上述のピニオン軸のピニオン歯を噛合いさせる。  Asteering device 10 in FIG. 1 is an electric power steering device, and connects a steering column shaft to which a steering wheel is coupled to asteering shaft 12 protruding from agear housing 11, and is connected to thesteering shaft 12 via a torsion bar. A pinion shaft is connected. Thesteering device 10 is inserted into thegear housing 11 so that therack shaft 13 can be moved linearly in the left-right direction, and the rack teeth of therack shaft 13 are engaged with the pinion teeth of the above-described pinion shaft.

舵取装置10は、ラック軸13の左右の中空端部に形成した雌ねじ部13Aに左右のラックエンド14の雄ねじ部14Aを螺着し、左右のラックエンド14に左右の継手15を介して左右のタイロッド16を連結し、左右のタイロッド16に左右の車輪を連結する。  Thesteering device 10 is configured such thatmale screw portions 14A of the left andright rack ends 14 are screwed tofemale screw portions 13A formed at the left and right hollow ends of therack shaft 13, and the left andright rack ends 14 are connected to the left and right viajoints 15 on the left and right sides. The left andright tie rods 16 are connected to the left andright tie rods 16.

舵取装置10は、電動モータ17をギヤハウジング11に支持し、電動モータ17の出力をウォームギヤ装置を介してピニオン軸に伝え、ひいてはラック軸13に操舵アシスト力として伝える。舵取装置10は、ステアリングシャフト12とピニオン軸との間に操舵トルク検出装置を設けてある。操舵トルク検出装置は、ステアリングホイールに加えた操舵トルクがステアリングシャフト12を介してトーションバーを弾性ねじり変形することによる、ステアリングシャフト12とピニオン軸の相対変位量からその操舵トルクを検出する。操舵トルク検出装置が検出した操舵トルクが所定値を越えたとき、電動モータ17を駆動し、ラック軸13に操舵アシスト力を付与する。これにより、舵取装置10は、ステアリングホイールの回転に伴なうピニオン軸の回転に連動するラック軸13の直線移動を、左右のタイロッド16を介して左右の車輪に伝え、操舵可能にするものである。  Thesteering device 10 supports theelectric motor 17 on thegear housing 11, and transmits the output of theelectric motor 17 to the pinion shaft through the worm gear device, and further transmits it to therack shaft 13 as a steering assist force. Thesteering device 10 is provided with a steering torque detection device between thesteering shaft 12 and the pinion shaft. The steering torque detection device detects the steering torque from the relative displacement amount of thesteering shaft 12 and the pinion shaft due to the elastic torsional deformation of the torsion bar via thesteering shaft 12 by the steering torque applied to the steering wheel. When the steering torque detected by the steering torque detector exceeds a predetermined value, theelectric motor 17 is driven to apply a steering assist force to therack shaft 13. As a result, thesteering device 10 transmits the linear movement of therack shaft 13 that is interlocked with the rotation of the pinion shaft accompanying the rotation of the steering wheel to the left and right wheels via the left andright tie rods 16 to enable steering. It is.

しかるに、舵取装置10は、ラック軸13の雌ねじ部13Aとラックエンド14の雄ねじ部14Aのゆるみ止めを図るため、図2に示す如く、ラック軸13の雌ねじ部13Aを形成してある中空端部に加締作業用孔部13B、換言すれば加締ポンチ1を挿入できる加締作業用孔部13Bを貫通状に穿設し、この加締作業用孔部13Bに臨むラックエンド14の雄ねじ部14Aを加締加工、換言すればポンチ1により雄ねじ部14Aのねじ山を圧壊してつぶしてなるものである。孔部13Bはラック軸13の中空端部の周方向の少なくとも1ヵ所、必要によれば複数ヵ所設けることもできる。  However, thesteering device 10 has a hollow end formed with afemale screw portion 13A of therack shaft 13 as shown in FIG. Acaulking work hole 13B, in other words, acaulking work hole 13B into which the caulking punch 1 can be inserted, is drilled in a penetrating manner, and the male screw of therack end 14 facing thecaulking work hole 13B. Theportion 14A is crimped, in other words, the screw thread of themale screw portion 14A is crushed by the punch 1 and crushed. Thehole 13B can be provided in at least one place in the circumferential direction of the hollow end of therack shaft 13 and, if necessary, a plurality of places.

従って、舵取装置10にあっては、ラック軸13の雌ねじ部13Aにラックエンド14の雄ねじ部14Aを螺着した状態で、ラック軸13の加締作業用孔部13Bに挿入されるポンチ1により、この加締作業用孔部13Bに臨むラックエンド14の雄ねじ部14Aを加締加工により圧壊してつぶし、それらのねじ部13A、14Aをゆるみ止め可能にする。  Therefore, in thesteering device 10, the punch 1 inserted into thecaulking work hole 13 </ b> B of therack shaft 13 in a state where themale screw part 14 </ b> A of therack end 14 is screwed to thefemale screw part 13 </ b> A of therack shaft 13. Thus, the male threadedportion 14A of therack end 14 facing thecaulking work hole 13B is crushed and crushed by caulking so that the threadedportions 13A and 14A can be prevented from loosening.

本実施例によれば以下の作用効果を奏する。
(a)ロックワッシャ等の格別のゆるみ止め部品を用いることなく、部品点数を削減できる。
According to the present embodiment, the following operational effects can be obtained.
(a) The number of parts can be reduced without using a special locking part such as a lock washer.

(b)ラック軸13の雌ねじ部13Aにラックエンド14の雄ねじ部14Aを単に螺着し、ラック軸13に設けた加締作業用孔部13Bに挿入されるポンチ1等の工具を用い、この孔部13Bに臨むラックエンド14の雄ねじ部14Aを単に加締加工により圧壊してつぶし、ラックエンド14の雄ねじ部14Aをラック軸13の雌ねじ部13Aに対して螺動不能にし、ひいてはそれらのねじ部13A、14Aを簡易かつ確実にゆるみ止めするものになる。  (b) Themale screw portion 14A of therack end 14 is simply screwed onto thefemale screw portion 13A of therack shaft 13, and a tool such as the punch 1 inserted into the caulkingwork hole portion 13B provided in therack shaft 13 is used. The male threadedportion 14A of therack end 14 facing thehole 13B is simply crushed and crushed by caulking so that the male threadedportion 14A of therack end 14 cannot be screwed with respect to the female threadedportion 13A of therack shaft 13. Theparts 13A and 14A are easily and reliably prevented from loosening.

以上、本発明の実施例を図面により詳述したが、本発明の具体的な構成はこの実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。例えば、本発明は油圧パワーステアリング装置においても適用できる。  Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to these embodiments, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, the present invention can be applied to a hydraulic power steering apparatus.

図1は舵取装置を示す全体図である。FIG. 1 is an overall view showing a steering apparatus.図2は図1の要部拡大図である。FIG. 2 is an enlarged view of a main part of FIG.

符号の説明Explanation of symbols

10 舵取装置
11 ギヤハウジング
13 ラック軸
13A 雌ねじ部
13B 加締作業用孔部
14 ラックエンド
14A 雄ねじ部
15 継手
16 タイロッド
DESCRIPTION OFSYMBOLS 10Steering device 11Gear housing 13 Rack axis |shaft 13AFemale thread part13B Cavity hole 14Rack end 14AMale thread part 15 Joint 16 Tie rod

Claims (1)

Translated fromJapanese
ギヤハウジングにラック軸を左右動可能に嵌挿し、ラック軸の中空端部に形成した雌ねじ部にラックエンドの雄ねじ部を螺着し、ラックエンドに継手を介してタイロッドを連結してなる舵取装置において、
ラック軸の中空端部に加締作業用孔部を設け、この加締作業用孔部に臨むラックエンドの雄ねじ部を加締加工してなることを特徴とする舵取装置。
Steering by inserting the rack shaft into the gear housing so that it can move left and right, screwing the male thread of the rack end into the female thread formed on the hollow end of the rack shaft, and connecting the tie rod to the rack end via a joint In the device
A steering apparatus, wherein a caulking operation hole is provided at a hollow end portion of a rack shaft, and an external thread portion of a rack end facing the caulking operation hole is caulked.
JP2007018257A2007-01-292007-01-29 Steering devicePendingJP2008184000A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP2007018257AJP2008184000A (en)2007-01-292007-01-29 Steering device

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP2007018257AJP2008184000A (en)2007-01-292007-01-29 Steering device

Publications (1)

Publication NumberPublication Date
JP2008184000Atrue JP2008184000A (en)2008-08-14

Family

ID=39727312

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP2007018257APendingJP2008184000A (en)2007-01-292007-01-29 Steering device

Country Status (1)

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JP (1)JP2008184000A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JP2012533033A (en)*2009-07-082012-12-20フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Locking of actuator stem and rod end bearing device used with fluid valve
JP2015117709A (en)*2013-12-162015-06-25カヤバ工業株式会社Shock absorber and method of manufacturing shock absorber
JP2015117712A (en)*2013-12-162015-06-25カヤバ工業株式会社 Shock absorber and method of manufacturing shock absorber

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6038259A (en)*1983-08-091985-02-27Nissan Motor Co LtdRack-and-pinion type steering device
JP2000197652A (en)*1998-12-282000-07-18Ngk Spark Plug Co LtdSpacer between centra

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6038259A (en)*1983-08-091985-02-27Nissan Motor Co LtdRack-and-pinion type steering device
JP2000197652A (en)*1998-12-282000-07-18Ngk Spark Plug Co LtdSpacer between centra

Cited By (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JP2012533033A (en)*2009-07-082012-12-20フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Locking of actuator stem and rod end bearing device used with fluid valve
US9062794B2 (en)2009-07-082015-06-23Fisher Controls International LlcLocking actuator stem and rod end bearing apparatus for use with fluid valves
US9624965B2 (en)2009-07-082017-04-18Fisher Controls International LlcLocking actuator stem and rod end bearing apparatus for use with fluid valves
JP2015117709A (en)*2013-12-162015-06-25カヤバ工業株式会社Shock absorber and method of manufacturing shock absorber
JP2015117712A (en)*2013-12-162015-06-25カヤバ工業株式会社 Shock absorber and method of manufacturing shock absorber

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