JPH01219530A - Steering torque detector - Google Patents
Steering torque detectorInfo
- Publication number
- JPH01219530A JPH01219530A JP63045148A JP4514888A JPH01219530A JP H01219530 A JPH01219530 A JP H01219530A JP 63045148 A JP63045148 A JP 63045148A JP 4514888 A JP4514888 A JP 4514888A JP H01219530 A JPH01219530 A JP H01219530A
- Authority
- JP
- Japan
- Prior art keywords
- circuit board
- printed circuit
- shaft
- steering torque
- detection device
- 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
Links
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 239000011521 glass Substances 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Power Steering Mechanism (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、自動車など車両の電動式パワーステアリン
グ装置に用いられるステアリングトルク検出装置に関し
、特に１しゆう動子の取付環のボス部端により予圧接触
されるプリント基板面の摩擦抵抗を低減する改良Ｋかか
わる。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a steering torque detection device used in an electric power steering device for a vehicle such as an automobile, and particularly to a steering torque detection device used in an electric power steering device for a vehicle such as an automobile. This invention relates to an improvement K that reduces the frictional resistance of the printed circuit board surface that is brought into pre-pressure contact.
この種のステアリングトルク検出装置として、実願８８
６２−９１８１１号に示されたものがある。さらにこれ
を改良した先行技術として、第３図に要部断面図で示す
ものがおる。図において、ステアリング軸の２分された
入力軸１と出力軸２とを、トーションバー３により連結
している。４は固定ピン、８．９は固定部のハウジング
（図示は略す）に支持された信愛である０３０は金属ブ
シュで、外周に合成樹脂材からなる支持環３１が注型成
形され、フランジ部３１ａが設けられている。支持環３
１の外円周部にはスリップリング３２が埋込まれておシ
、スリップリング３２から接続線１３が出されている。As this kind of steering torque detection device,
There is one shown in No. 62-91811. Further, as a prior art that is an improvement on this, there is one shown in FIG. 3 as a sectional view of the main part. In the figure, an input shaft 1 and an output shaft 2, which are divided into two parts of the steering shaft, are connected by a torsion bar 3. 4 is a fixing pin, 8.9 is a devotion supported by the housing of the fixing part (not shown), and 030 is a metal bush, on the outer periphery of which a support ring 31 made of synthetic resin is cast, and a flange part 31a. is provided. Support ring 3
A slip ring 32 is embedded in the outer circumferential portion of 1, and a connecting wire 13 is extended from the slip ring 32.
３３は入力軸１に固定された固定ピンである。４０は絶
縁材からなるプリント基板で、ブシュ３０にはめられ、
７ラン９部３１ａに固定されている。このプリント基板
４０の表面にはポテンショメータ要素４１の抵抗層及び
電極が形成されている。33 is a fixed pin fixed to the input shaft 1. 40 is a printed circuit board made of an insulating material, which is fitted into the bush 30;
It is fixed to the 7 run 9 section 31a. A resistance layer and electrodes of a potentiometer element 41 are formed on the surface of this printed circuit board 40.
３４は合成樹脂成形品からなる取付環で、ボス部３４ａ
がブシュ３０に可動にはめられ同心に支持されている。34 is a mounting ring made of a synthetic resin molded product, and the boss portion 34a
are movably fitted into the bush 30 and supported concentrically.
３４ｂはフランジ部で、内端面にはしゆう動子３６が取
付けられ、先端が上記ポテンショメータ要素４１の抵抗
層及び電極に弾性接触している。３４ｃは７ラン９部３
４ｂの外端に設けられた軸方向の円筒状突出部で、端部
から軸方向に係合溝３４（Ｌが設けられ、出力軸２に固
定された係止ピン３５に円周方向に係止され、出力軸２
のねじ）回動により一体に回動される。突出部３４ｃ
Ｋは円周方向の広角度範囲のスリン） ３３ｅが軸方向
に複数条設けられ、互いに円周方向に１８０°反対位置
にされており、軸方向に弾性伸縮可能にされている。ま
た、突出部３４０の端部側には環状溝３４ｆが設けられ
、止め輪６１がはめられている。Reference numeral 34b denotes a flange portion, and a slider 36 is attached to the inner end surface of the flange portion, the tip of which is in elastic contact with the resistance layer and electrode of the potentiometer element 41. 34c is 7 runs 9th part 3
A cylindrical protrusion in the axial direction provided at the outer end of the output shaft 4b, which is provided with an engagement groove 34 (L) in the axial direction from the end and engaged in the circumferential direction with the locking pin 35 fixed to the output shaft 2. output shaft 2
screw) rotates as a unit. Projection part 34c
A plurality of strips 33e (K having a wide angle range in the circumferential direction) are provided in the axial direction, and are positioned 180 degrees opposite to each other in the circumferential direction, so that they can be elastically expanded and contracted in the axial direction. Further, an annular groove 34f is provided on the end side of the protrusion 340, and a retaining ring 61 is fitted therein.
この止め輪６１とフランジ部３４ｂ外端との間にばね部
材６２がはめられている。ばね部材６０の抑圧により、
ボス部３４ａ端がプリント基板４０面に常時予圧接触し
ている。A spring member 62 is fitted between this retaining ring 61 and the outer end of the flange portion 34b. Due to the compression of the spring member 60,
The end of the boss portion 34a is always in preload contact with the surface of the printed circuit board 40.
なお、ブラシ装置が設けられているが、図示は略してい
る。Note that although a brush device is provided, illustration is omitted.
上記のような先行技術によるステアリングトルク検出装
置では、取付環３４のボス部３４ａ端がプリント基板４
０１ｉに予圧接触しており、ハンドル操作による人、出
力軸１．２のねじれによる回動で、双方の接触面がしゆ
う動して摩耗が生じ、寿命が短縮するという問題点があ
った。In the steering torque detection device according to the prior art as described above, the end of the boss portion 34a of the mounting ring 34 is connected to the printed circuit board 4.
Since the output shaft 1.2 is in pre-loaded contact with the output shaft 1.2, the contact surfaces of both sides move due to rotation by a person operating the handle or twisting of the output shaft 1.2, causing wear and shortening the service life.
この発明はこのような問題点を解決するためになされた
もので、しゆう動子の取付環のボス部端に接するプリン
ト基板の接触面の摩擦抵抗が小さく、シゆう動摩耗を低
減し耐久性を向上したステアリングトルク検出装置を得
ることを目的としている。This invention was made to solve these problems, and the frictional resistance of the contact surface of the printed circuit board that contacts the end of the boss of the mounting ring of the slider is small, reducing sliding wear and increasing durability. The purpose of this invention is to obtain a steering torque detection device with improved performance.
この発明にかかるステアリングトルク検出装置は、取付
環のボス部端に接するプリント基板の接触面に低摩擦係
数の被膜を施したものである。The steering torque detection device according to the present invention has a coating having a low coefficient of friction applied to the contact surface of the printed circuit board that contacts the end of the boss portion of the mounting ring.
この発明においては、取付環のボス部端に予圧されてい
るプリント基板の接触面には、低摩擦係数の被膜が形成
されてあシ、摩耗が大幅に低減される。また、これによ
り、プリント基板面としゆう動子を取付けた取付環のフ
ランジ部内端面との間隔がほぼ一定に維持され、しゆう
動子がポテンショメータ要素の抵抗層に一定の圧力で接
触できる０
〔実施例〕
第１図及び第２図は、この発明によるステアリングトル
ク検出装置の一実施例を示すプリント基板の正面図及び
側面図である。図において、プリント基板４０には、取
付環３４のボス部３４ａとの接触面に、低摩擦係数の被
膜４９が円形に形成されている。この被膜４９には、例
えばガラスコーティングにより形成している。４１はポ
テンショメータ要素で、図では主回路と副回路との２回
路の場合を示す。主回路には抵抗層４２と電極４３が設
けられ、副回路には抵抗層４４と電極４５が設けられて
いる。３６及び３７は取付環３４に取付けられ、接触す
るしゆう動子を示す。上記抵抗１ｉ ４２．４４はカー
ボン印刷により形成されている。In this invention, a coating with a low coefficient of friction is formed on the contact surface of the printed circuit board that is preloaded at the end of the boss portion of the mounting ring, thereby significantly reducing wear and tear. Additionally, this allows the distance between the printed circuit board surface and the inner end surface of the flange portion of the mounting ring to which the slider is attached to be maintained almost constant, allowing the slider to come into contact with the resistance layer of the potentiometer element with a constant pressure. Embodiment FIGS. 1 and 2 are a front view and a side view of a printed circuit board showing an embodiment of a steering torque detection device according to the present invention. In the figure, a low friction coefficient coating 49 is formed in a circular shape on the printed circuit board 40 on the contact surface with the boss portion 34a of the mounting ring 34. This film 49 is formed by, for example, glass coating. Reference numeral 41 denotes a potentiometer element, and the figure shows a case of two circuits, a main circuit and a sub-circuit. The main circuit is provided with a resistance layer 42 and an electrode 43, and the sub circuit is provided with a resistance layer 44 and an electrode 45. Reference numerals 36 and 37 indicate sliders attached to and in contact with the attachment ring 34. The resistors 1i 42, 44 are formed by carbon printing.
なお、この発明によるステアリングトルク検出装置は、
プリント基板４０而に被膜４９を形成した外は、第３図
に示す装置と同一構成である。Note that the steering torque detection device according to the present invention has the following features:
The configuration is the same as that of the device shown in FIG. 3, except that a coating 49 is formed on the printed circuit board 40.
上記のように、ボス部３４ａ端により王接しゆう動され
るプリント基板４ｏの接触面には、低摩擦係数の被膜４
９が形成されておシ、摩擦抵抗が極めて小さくなシ摩耗
が低減される。As mentioned above, the contact surface of the printed circuit board 4o that comes into contact with the end of the boss portion 34a and is moved is coated with a coating 4 having a low coefficient of friction.
9 is formed, frictional resistance is extremely small, and wear is reduced.
なお、被膜４９として、カーボン印刷により形成しても
よい。この場合は、抵抗層４２．４４の形成の工程で同
時に施行でき、生産性が向上される。Note that the coating 49 may be formed by carbon printing. In this case, the process can be performed simultaneously with the process of forming the resistance layers 42 and 44, improving productivity.
また、上記実施例では、スリップリング３２及びプリン
ト基板４０を入力軸１側に装置し、取付環３４を出力軸
２に円周方向に係止したが、これらの装着は入、出力軸
を入替えた取付にしてもよい０
さらに、上記実施例ではプリント基板４０部から固定部
に検出信号を取出す手段として、スリップリング３２及
びブラシ装置によったが、これに限らず、プリント基板
４０側から信号導線を半径方向に渦巻状に可とうに配置
し、固定部の端子に引出すようにした、カールコード式
手段によってもよい。Furthermore, in the above embodiment, the slip ring 32 and the printed circuit board 40 were installed on the input shaft 1 side, and the mounting ring 34 was secured to the output shaft 2 in the circumferential direction. Further, in the above embodiment, the slip ring 32 and the brush device are used as a means for extracting the detection signal from the printed circuit board 40 side to the fixed section, but the present invention is not limited to this. A curl cord type means may also be used, in which the conducting wire is flexibly arranged in a spiral manner in the radial direction and drawn out to the terminal of the fixed part.
以上のように、この発明によれば、しゆう動子の取付環
のボス部端に予圧されるプリント基板の接触面に、低摩
擦係数の被膜を施したので、しゆう動摩耗を低減し、耐
久性が大幅に向上される。As described above, according to the present invention, since a coating with a low coefficient of friction is applied to the contact surface of the printed circuit board that is preloaded to the end of the boss portion of the mounting ring of the slider, sliding motion wear can be reduced. , durability is greatly improved.
第１図及び第２図はこの発明によるステアリングトルク
検出装置の一実施例を示すプリント基板の正面図及び側
面断面図、第３図は先行技術によるステアリングトルク
検出装置の要部縦断図である０
１・・・入力軸、２・・・出力軸、３・・・トーション
バー、３４・・・取付環、３４ａ−・・ボス部、３４ｂ
・・・フランジ部、３４ｃ・・・円筒状突出部、３５・
・・係止ピン、４０・・・プリント基板、４１・・・ポ
テンショメータ要素、４２．４４・・・抵抗層、４９・
・・被膜1 and 2 are a front view and a side sectional view of a printed circuit board showing an embodiment of a steering torque detection device according to the present invention, and FIG. 3 is a longitudinal sectional view of a main part of a steering torque detection device according to the prior art. DESCRIPTION OF SYMBOLS 1...Input shaft, 2...Output shaft, 3...Torsion bar, 34...Mounting ring, 34a--Boss part, 34b
...Flange part, 34c...Cylindrical protrusion part, 35.
... Locking pin, 40 ... Printed circuit board, 41 ... Potentiometer element, 42.44 ... Resistance layer, 49.
・・Coating
Claims (1)
、これら入力軸と出力軸とを連結するトーシヨンバー、
ポテンショメータ要素の抵抗層と電極とが一面に配設さ
れてあり、上記入力軸と出力軸とのいづれか一方の軸側
に取付けられたプリント基板、この一方の軸側と固定部
との間に介在され、プリント基板から固定部に検出信号
を取出す手段、絶縁材からなり、上記両方の軸にまたが
り、他方の軸により同一回動される取付環、この取付環
のフランジ部に取付けられ、先端が上記ポテンショメー
タ要素の抵抗層に円周方向に対し微小幅の弾性接触をす
るしゆう動子を備えたステアリングトルク検出装置にお
いて、上記取付環は、上記一方の軸側に可動にはめられ
同心に支持されるボス部と、このボス部から出され、内
端面に上記しゆう動子を取付けたフランジ部と、このフ
ランジ部の外端に軸方向に設けられ、上記他方の軸に円
周方向に係止された円筒状突出部とから形成されており
、この取付環は押圧手段により上記プリント基板側に押
圧され、上記ボス部端でプリント基板面を予圧しており
、プリント基板のボス部端との接触面に低摩擦係数の被
膜を形成したことを特徴とするステアリングトルク検出
装置。An input shaft and an output shaft that are provided by dividing the steering shaft into two, a torsion bar that connects these input shafts and the output shaft,
A resistive layer and an electrode of the potentiometer element are arranged on one side, and a printed circuit board is attached to one of the input shaft and output shaft, and is interposed between the one shaft side and the fixed part. means for extracting the detection signal from the printed circuit board to the fixed part; a mounting ring made of insulating material that straddles both of the above shafts and rotates in the same direction by the other shaft; In the steering torque detection device equipped with a slider that makes elastic contact with the resistance layer of the potentiometer element in a minute width in the circumferential direction, the mounting ring is movably fitted on the one shaft side and supported concentrically. a flange part extending from the boss part and having the above-mentioned slider mounted on its inner end surface; This mounting ring is pressed against the printed circuit board side by a pressing means, prepressing the printed circuit board surface at the end of the boss section, and presses the end of the boss section of the printed circuit board against the surface of the printed circuit board. A steering torque detection device characterized by forming a coating with a low coefficient of friction on the contact surface with the steering torque detection device.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045148A JPH01219530A (en) | 1988-02-26 | 1988-02-26 | Steering torque detector |
| KR1019890001553A KR920006500B1 (en) | 1988-02-25 | 1989-02-11 | Steering torque detecting sensor |
| US07/313,844 US4922761A (en) | 1988-02-25 | 1989-02-23 | Steering torque detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63045148A JPH01219530A (en) | 1988-02-26 | 1988-02-26 | Steering torque detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01219530A true JPH01219530A (en) | 1989-09-01 |
Family
ID=12711198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63045148A Pending JPH01219530A (en) | 1988-02-25 | 1988-02-26 | Steering torque detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01219530A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10260094A (en) * | 1997-03-17 | 1998-09-29 | Toyota Motor Corp | Torque sensor and control device |
| KR100377433B1 (en) * | 1998-09-10 | 2003-05-17 | 주식회사 만도 | Rotational Torque Sensor for Automotive Electronic Steering System |
| KR100505934B1 (en) * | 2002-07-22 | 2005-08-05 | 김두용 | Device for displaying the steering information for vehicles |
-
1988
- 1988-02-26 JP JP63045148A patent/JPH01219530A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10260094A (en) * | 1997-03-17 | 1998-09-29 | Toyota Motor Corp | Torque sensor and control device |
| KR100377433B1 (en) * | 1998-09-10 | 2003-05-17 | 주식회사 만도 | Rotational Torque Sensor for Automotive Electronic Steering System |
| KR100505934B1 (en) * | 2002-07-22 | 2005-08-05 | 김두용 | Device for displaying the steering information for vehicles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4838074A (en) | Steering torque detecting device | |
| US4856916A (en) | Conducting rolling bearing | |
| KR920006500B1 (en) | Steering torque detecting sensor | |
| JPH01219530A (en) | Steering torque detector | |
| KR910006523B1 (en) | Automotive steering assembly | |
| US6756550B2 (en) | Electric switch unit | |
| US3375478A (en) | Electrical control and method of making the same | |
| US2885519A (en) | Potentiometer wiper arm | |
| US4477859A (en) | Rotary electric component | |
| JPH01217227A (en) | Steering torque detector | |
| US2796501A (en) | Variable resistor with high torque adjustment | |
| JP3017034B2 (en) | Rotary operation type electric parts | |
| US5187464A (en) | Extended life potentiometric position transducer | |
| US3652970A (en) | Variable resistor having an improved wiper member | |
| US2939097A (en) | Variable resistance device | |
| JP3372183B2 (en) | Rotating conductive roller | |
| JP3687103B2 (en) | pressure switch | |
| JPH0236226Y2 (en) | ||
| JPH0159723B2 (en) | ||
| JPH0452905Y2 (en) | ||
| KR940008992A (en) | Drive transmission mechanism of steering wheel for rear wheel of vehicle | |
| US3331048A (en) | Contact assembly for potentiometers | |
| JPH047562B2 (en) | ||
| JP2524085Y2 (en) | Energized rolling bearing | |
| JPS6220962Y2 (en) |