JPH0140333Y2 - - Google Patents
Info
- Publication number
- JPH0140333Y2 JPH0140333Y2 JP1984019173U JP1917384U JPH0140333Y2 JP H0140333 Y2 JPH0140333 Y2 JP H0140333Y2 JP 1984019173 U JP1984019173 U JP 1984019173U JP 1917384 U JP1917384 U JP 1917384U JP H0140333 Y2 JPH0140333 Y2 JP H0140333Y2
- Authority
- JP
- Japan
- Prior art keywords
- steering
- torque
- female member
- contour
- circular inner
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Steering Controls (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、ステアリングホイールの操舵トルク
をステアリングギヤへ伝達する緩衝可能な操舵ト
ルク伝達装置をもつ自動車用ステアリング装置に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a steering device for an automobile having a dampable steering torque transmission device for transmitting steering torque of a steering wheel to a steering gear.
ラツク・ピニオン式ステアリングギヤをもつス
テアリング装置では、タイロツドは短い直線状
で、ステアリングギヤとステアリングナツクルア
ームとを連結しているが、ステアリングホイール
に過大なトルクが加えられると、タイロツドのね
じ部やステアリングギヤの歯が変形し、ホイール
アライメントに狂いの生ずるおそれがある。
In a steering device with a rack and pinion type steering gear, the tie rod is a short straight line that connects the steering gear and the steering knuckle arm, but if excessive torque is applied to the steering wheel, the threaded part of the tie rod The teeth of the steering gear may become deformed and the wheel alignment may become misaligned.
本考案の課題は、過大なトルクがステアリング
ホイールに加えられてもタイロツドのねじ部やス
テアリングギヤの歯の変形を回避でき、操舵を不
可能にすることもなく、過大なトルクによる操舵
系の異常を運転者に通報できる装置を提供するこ
とである。
The problem with this invention is that even if excessive torque is applied to the steering wheel, it can avoid deformation of the tie rod threads and the teeth of the steering gear, and prevent steering system failures caused by excessive torque. To provide a device that can notify the driver of the
この課題を解決するため本考案によれば、緩衝
可能な操舵トルク伝達装置が、非円形の内周輪郭
をもつ中空のめす部材と、このめす部材に回転係
合可能な中空のおす部材とから成り、このおす部
材が、めす部材に遊隙なくはまる同様に非円形の
外周輪郭をもつトルク伝達部分と、軸線方向にこ
のトルク伝達部分に続いて一体に形成されて特定
のトルク以上で塑性変形する断面縮小部分と、軸
線方向にこの断面縮小部分に更に続いて一体に形
成されてめす部材の非円形内周輪郭に相似でこれ
より小さいがこの非円形内周輪郭の短径より大き
い長径の非円形外周輪郭をもつ相対回転角制限部
分とを含んでいる。
In order to solve this problem, according to the present invention, a dampable steering torque transmission device includes a hollow female member having a non-circular inner peripheral contour and a hollow male member rotatably engageable with the female member. The male member is integrally formed with a torque transmitting portion having a non-circular outer peripheral contour that fits into the female member without any play, and is integrally formed following this torque transmitting portion in the axial direction, and is plastically deformed when the torque exceeds a certain torque. a reduced cross-sectional portion which is formed integrally with the reduced cross-sectional portion in the axial direction, and which is similar to the non-circular inner circumferential contour of the female member and has a major axis smaller than this but larger than the minor axis of the non-circular inner circumferential contour. and a relative rotation angle limiting portion having a non-circular outer peripheral contour.
本考案によれば、通常の操舵トルクでは、めす
部材とおす部材のトルク伝達部分との遊隙のない
はまり合いを介して、操舵が確実に行なわれる
が、車両の衝突時等により過大なトルクがステア
リングホイールに加わると、断面縮小部分が塑性
変形し、その塑性変形により衝撃エネルギを吸収
するので、タイロツドのねじ部やステアリングギ
ヤの歯が、この過大トルクにより変形するのを防
止される。この場合断面縮小部分の塑性変形がお
こつても、おす部材の相対回転角制限部分が、ト
ルク伝達部分に対して小さい回転角だけねじれた
状態でめす部材に係合するので、操舵が不可能に
なることはない。しかもこの場合めす部材と相対
回転角制限部分との間には、回転方向に遊びが生
ずるので、運転者は操舵系のこの異常即ち断面縮
小部分の塑性変形を知ることができる。
According to the present invention, with normal steering torque, steering is performed reliably through the tight fit between the torque transmitting parts of the female and male members, but when a vehicle crashes, etc., excessive torque is generated. When applied to the steering wheel, the reduced cross-section portion plastically deforms, and this plastic deformation absorbs the impact energy, thereby preventing the threaded portion of the tie rod and the teeth of the steering gear from deforming due to this excessive torque. In this case, even if plastic deformation occurs in the reduced cross-section portion, the relative rotation angle limiting portion of the male member engages with the female member while being twisted by a small rotation angle relative to the torque transmission portion, making steering impossible. It will never become. Moreover, in this case, since play occurs in the rotational direction between the female member and the relative rotation angle limiting portion, the driver can be aware of this abnormality in the steering system, that is, the plastic deformation of the reduced cross-section portion.
本考案を図面の実施例について説明する。 The present invention will be described with reference to the embodiments shown in the drawings.
第１図においてステアリングホイール１０の操
舵トルクは、ステアリングメインシヤフト１２、
自在継手１４、伸縮可能に構成された中間軸１
６、自在継手１８、およびラツク・ピニオン式ス
テアリングギヤ２０を介して左右のタイロツド２
２，２４へ伝達される。 In FIG. 1, the steering torque of the steering wheel 10 is determined by the steering main shaft 12,
Universal joint 14, intermediate shaft 1 configured to be expandable and retractable
6, the left and right tie rods 2 are connected via the universal joint 18 and the rack-and-pinion steering gear 20.
2 and 24.
中間軸１６の所には、第２図に示すように緩衝
可能な操舵トルク伝達装置が設けられている。
この操舵トルク伝達装置は、互いに平行な２つ
の線分の両端を円弧でつないだ非円形の周輪郭を
もつトルク伝達部分３２を有する中実のおす部材
２６と、おす部材２６の外周に軸線方向へ移動可
能に遊隙なくはまつて同様な非円形の内周輪郭を
もつ中空のめす部材２８とを含んでいる。軸線方
向へおす部材２６のトルク伝達部分３２に続い
て、特定のトルク以上で塑性変形する断面縮小部
分３０と、めす部材２８の非円形内周輪郭に相似
でこれより小さいがこの輪郭の短径（線分の間
隔）より大きい長径（円弧のなす直径）の非円形
外周輪郭をもつ相対回転角制限部分３４が一体に
続いている。 A dampable steering torque transmission device is provided at the intermediate shaft 16, as shown in FIG.
This steering torque transmission device includes a solid male member 26 having a torque transmission portion 32 having a non-circular circumferential contour in which both ends of two mutually parallel line segments are connected by a circular arc, and an axial direction formed on the outer periphery of the male member 26. and a hollow female member 28 having a similar non-circular inner circumferential contour. Following the torque transmitting portion 32 of the male member 26 in the axial direction, there is a reduced cross-section portion 30 that plastically deforms when a torque exceeds a certain value, and a short diameter of the non-circular inner peripheral contour of the female member 28, which is similar to but smaller than this contour. A relative rotation angle limiting portion 34 having a non-circular outer circumferential contour with a longer diameter (diameter of a circular arc) larger than (interval between line segments) continues integrally.
正常時には、ステアリングホイール１０の操舵
トルクは、断面縮小部分３０を介して、中空おす
部材２６のトルク伝達部分３２と中空めす部材２
８とのはまり合いにより、ステアリングギヤ２０
へ伝達される。
During normal operation, the steering torque of the steering wheel 10 is transmitted to the torque transmission portion 32 of the hollow male member 26 and the hollow female member 2 via the reduced cross-section portion 30.
8, the steering gear 20
transmitted to.
車両の衝突等によりステアリングホイール１０
へ過大な衝撃トルクが作用すると、断面縮小部分
３０が塑性変形して、衝撃エネルギを吸収する。
従つてタイロツド２２，２４のねじ部またはステ
アリングギヤ２０の歯の変形が回避され、ホイー
ルアライメントの狂いも回避される。 Steering wheel 10 due to vehicle collision, etc.
When excessive impact torque is applied to the reduced cross-section portion 30, the reduced cross-section portion 30 is plastically deformed and absorbs the impact energy.
Therefore, deformation of the threaded portions of the tie rods 22, 24 or the teeth of the steering gear 20 is avoided, and misalignment of the wheels is also avoided.
断面縮小部分３０の塑性変形後は、第４図に示
すように、おす部材２６とめす部材２８との間の
操舵トルク伝達は、今やおす部材２６の相対回転
角制限部分３４とめす部材２８との係合を介して
行なわれる。従つて断面縮小部分３０の塑性変形
後も、操舵が不可能になることはない。なおこの
場合の回転方向遊びにより、運転者は操舵系の異
常を直ちに知ることができる。 After plastic deformation of the reduced cross-section portion 30, as shown in FIG. This is done through the engagement of the Therefore, even after the cross-section reduced portion 30 is plastically deformed, steering will not become impossible. Note that the rotational play in this case allows the driver to immediately know that there is an abnormality in the steering system.
第１図はステアリング装置全体の斜視図、第２
図はその緩衝可能な操舵トルク伝達装置の軸線に
沿う断面図、第３図は第２図の−線に沿う断
面図、第４図は断面縮小部分が塑性変形した後の
第３図に対応する断面図である。
……緩衝可能な操舵トルク伝達装置、２６…
…おす部材、２８……めす部材、３０……断面縮
小部分、３２……トルク伝達部分、３４……相対
回転角制限部分。
Figure 1 is a perspective view of the entire steering device, Figure 2 is a perspective view of the entire steering device.
The figure is a cross-sectional view along the axis of the dampable steering torque transmission device, Figure 3 is a cross-sectional view along the - line in Figure 2, and Figure 4 corresponds to Figure 3 after the cross-sectional reduced part has been plastically deformed. FIG. ...Bufferable steering torque transmission device, 26...
...Male member, 28...Female member, 30...Reduced cross section portion, 32...Torque transmission portion, 34...Relative rotation angle limiting portion.
Claims (1)
テアリングギヤ２０へ伝達する緩衝可能な操舵
トルク伝達装置が、非円形の内周輪郭をもつ
中空のめす部材２８と、このめす部材２８に回
転係合可能な中空のおす部材２６とから成り、
このおす部材２６が、めす部材２８に遊隙なく
はまる同様に非円形の外周輪郭をもつトルク伝
達部材３２と、軸線方向にこのトルク伝達部分
に続いて一体に形成されて特定のトルク以上で
塑性変形する断面縮小部分３０と、軸線方向に
この断面縮小部分に更に続いて一体に形成され
てめす部材２８の非円形内周輪郭に相似でこれ
より小さいがこの非円形内周輪郭の短径より大
きい長径の非円形外周輪郭をもつ相対回転角制
限部分３４とを含んでいることを特徴とする、
自動車用ステアリング装置。 ２ 緩衝操作トルク伝達装置がステアリングメ
インシヤフト１２とステアリングギヤ２０との
間にある中間軸１６に設けられていることを特
徴とする、実用新案登録請求の範囲第１項に記
載の装置。[Claims for Utility Model Registration] 1. A bufferable steering torque transmission device for transmitting steering torque of the steering wheel 10 to the steering gear 20 includes a hollow female member 28 having a non-circular inner peripheral contour, and the female member 28. and a hollow male member 26 that can be rotationally engaged with the
This male member 26 is integrally formed with a torque transmitting member 32 which fits into the female member 28 without any play and also has a non-circular outer circumferential contour, and is integrally formed following this torque transmitting portion in the axial direction. A deformable cross-section reduced portion 30 is formed integrally with the deformable cross-section reduced portion in the axial direction, and is similar to the non-circular inner circumferential contour of the female member 28, but smaller than the minor axis of the non-circular inner circumferential contour. and a relative rotation angle limiting portion 34 having a non-circular outer peripheral contour with a large major diameter.
Automotive steering device. 2. The device according to claim 1, wherein the buffer operation torque transmission device is provided on the intermediate shaft 16 between the steering main shaft 12 and the steering gear 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1917384U JPS60131730U (en) | 1984-02-15 | 1984-02-15 | Automotive steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1917384U JPS60131730U (en) | 1984-02-15 | 1984-02-15 | Automotive steering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60131730U JPS60131730U (en) | 1985-09-03 |
| JPH0140333Y2 true JPH0140333Y2 (en) | 1989-12-04 |
Family
ID=30508501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1917384U Granted JPS60131730U (en) | 1984-02-15 | 1984-02-15 | Automotive steering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60131730U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5233948B2 (en) * | 2009-10-09 | 2013-07-10 | トヨタ自動車株式会社 | Electric power steering device |
| JP5347905B2 (en) * | 2009-10-27 | 2013-11-20 | トヨタ自動車株式会社 | Vehicle steering device |
| JP5772631B2 (en) * | 2012-01-30 | 2015-09-02 | 日本精工株式会社 | Steering device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6116207Y2 (en) * | 1981-03-06 | 1986-05-19 |
-
1984
- 1984-02-15 JP JP1917384U patent/JPS60131730U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60131730U (en) | 1985-09-03 |
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