JP4832638B2 - Accelerator pedal device - Google Patents

Accelerator pedal device Download PDF

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Publication number
JP4832638B2
JP4832638B2 JP2000395346A JP2000395346A JP4832638B2 JP 4832638 B2 JP4832638 B2 JP 4832638B2 JP 2000395346 A JP2000395346 A JP 2000395346A JP 2000395346 A JP2000395346 A JP 2000395346A JP 4832638 B2 JP4832638 B2 JP 4832638B2
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Japan
Prior art keywords
spacer
bush
sliding contact
washer
flange
Prior art date
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Expired - Fee Related
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JP2000395346A
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Japanese (ja)
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JP2002192978A (en
Inventor
淳二 石井
佳孝 野田
俊一 大月
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Hiruta Kogyo Co Ltd
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Hiruta Kogyo Co Ltd
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  • Mechanical Control Devices (AREA)
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Description

【0001】
【発明の属する技術分野】
本発明は、自動車等のアクセルペダル装置に関する。
【0002】
【従来の技術】
自動車等の加速操作を担うアクセルペダルの操作性は、アクセルの踏込量に応じた踏込力の変化、すなわちヒステリシス特性に依存する。例えば、特開平06-299874号「車両用アクセルペダル装置」では、回動軸と一体に回動する第1ロータと第2ロータとの間に挟まれたスプリングに歪を与えてアクセルペダルの復帰力を発生させる構造を提示している。第2ロータとストッパとの対向する端面には、鋼球を支承する鋼球溝を斜めに形成し、復帰力の増加に伴って鋼球溝は浅い部分で対向するようになるため、回動軸と一体に回動する回動軸側摩擦板及びハウジングに固定されたハウジング側摩擦板に加わる圧力が増加し、アクセルペダルには復帰力に対応した移動抗力が印加されるようにしている。
【0003】
また、特開平11-059220号「アクセルペダル装置」では、支軸を挿通する孔を設けたブラケットと、ブラケットの孔に回動可能に挿通・支持された支軸と、アクセルペダルを有すると共に支軸の末端に固定されたペダルアームと、支軸の周囲に配設され、ペダルアームを反踏み込み方向に付勢する戻しばねと、を備えるアクセルペダル装置を提示している。アクセル開度センサをブラケット上に取り付け、内蔵したロータの回動角に応じてアクセル開度を示す信号を発生するようにし、前記アクセル開度センサのロータとベダルアームの先端に設けられた係合部とを、クランク機構を介して連結する。こうして、支軸に外嵌された2つの部材間でブラケットの孔の周縁部を挟み、その挟み力を変えて支軸の回動摩擦抵抗を調整する回動抵抗調整機構を設けているわけである。
【0004】
【発明が解決しようとする課題】
アクセルペダル装置において良好なヒステリシス特性を得る構造は、複雑で部品点数が増加しやすい。これが、コスト高を招く問題であり、上記特開平06-299874号は複雑な構造がコスト高を招く例と見ることができる。これに対して、特開平11-059220号では、少ない部品点数で簡単な構造とし、良好なアクセル操作性を確保できるようにすることを課題として挙げている。確かに、構造は簡略化されているが、回動摩擦抵抗を発生させるために、軸筒とブッシュとでブラケットを挟持する必要から、依然として部品点数の削減が不十分である。そこで、より部品点数を減らしながらも、良好なヒステリシス特性が得られる摩擦抵抗の発生構造を開発するため、検討した。
【0005】
【課題を解決するための手段】
検討の結果開発したものが、車体への取付ブラケット2に主軸1を軸着し、反発用コイルバネ15を介装して互いが離隔するように主軸1の軸方向に付勢したスペーサ3及びブッシュ4を主軸1の回動方向に回動しないように取付ブラケット2に係合し、スペーサ3及びブッシュ4それぞれに摺接するフランジ16及びワッシャ18を主軸1に取り付け、回動しないスペーサ3及びブッシュ4のスペーサ内摺接面20及びブッシュ内摺接面5を、主軸1に従って回動するフランジ16及びワッシャ18のフランジ外摺接面21及びワッシャ外摺接面22に摺接させることにより摺動抵抗(=摩擦抵抗)を発生させるアクセルペダル装置であり、スペーサ3及びブッシュ4のスペーサ内摺接面20及びブッシュ内摺接面5に、フランジ16及びワッシャ18の平坦なフランジ外摺接面21及びワッシャ外摺接面22に対して断面凹形状に傾斜したテーパ面6,6を形成したことを特徴とする。
【0006】
本発明は、部品点数の削減と安定した摺動抵抗の発生とを目的とし、主軸に対して回動しないスペーサ3及びブッシュ4を取付ブラケット2に係合し、このスペーサ3及びブッシュ4に対して摺接するフランジ16及びワッシャ18を主軸に取り付けることとした。スペーサ3及びブッシュ4は主軸と共に回動しないように、円形断面を除く断面形状をもって取付ブラケット2に係合するが、主軸の軸方向には移動自在にしておくと、主軸の軸方向の付勢に従って互いが離隔するように動き、主軸に取り付けたフランジ16及びワッシャ18に圧接して摺動抵抗を発生させる。
【0007】
フランジ16及びワッシャ18は、スペーサ3及びブッシュ4を挟むように主に取り付ける。この場合、フランジ16及びワッシャ18が主軸に螺合する締付ナット19によってスペーサ3及びブッシュ4に対して締め付け可能であり、この締付ナット19の螺合量によって発生する摺動抵抗を増減可能にすると、容易に摺動抵抗を調節でき、例えば主軸構造を車種毎に共通しながら、それぞれに適切な摺動抵抗を作り出すことができる。
【0008】
また、スペーサ3及びブッシュ4のスペーサ内摺接面20及びブッシュ内摺接面5に、フランジ16及びワッシャ18の平坦なフランジ外摺接面21及びワッシャ外摺接面22に対して断面凹形状に傾斜したテーパ面6,6を形成する構造にすれば、経時的な摺動抵抗の変化を抑制る。すなわち、本発明のアクセルペダル装置で得られる摺動抵抗Fは、スペーサ内摺接面20及びブッシュ内摺接面5のフランジ外摺接面21及びワッシャ外摺接面22に対する摺接範囲Sで発生する摩擦力M(部材の状態等で変化する)×内摺接面の主軸中心からの半径R(フランジ16及びワッシャ18は回動しない)で決定するが、テーパ面6,6が経時的に潰れてくる(樹脂製のスペーサ3及びブッシュ4の場合は削れてくる)と、増加した摺接範囲Sにおいて発生する摩擦力Mは増加するが、半径Rは小さくなるので、結果として摺動抵抗Fの変動を抑制できるわけである。同様に、フランジ及びワッシャのフランジ外摺接面及びワッシャ外摺接面に、スペーサ及びブッシュの平坦なスペーサ内摺接面及びブッシュ内摺接面に対して断面凹形状に傾斜したテーパ面を形成した構造でも、摺動抵抗Fの安定を図ることができる。
【0009】
【発明の実施の形態】
以下、本発明の実施形態について、図を参照しながら説明する。図1は本発明を適用したアクセルペダル装置全体を表した正面図、図2は本発明該当部位である主軸1近傍を表した拡大断面図、図3は取付ブラケット2に対するスペーサ3及びブッシュ4の取付関係を表した斜視図、図4はスペーサ3及びブッシュ4の内摺接面5,20に断面凹形状に傾斜したテーパ面6を形成した別例の図2相当拡大断面図であり、図5は経時的にスペーサ3及びブッシュ4が磨耗した状態を表した別例の図2相当拡大断面図である。
【0010】
本発明を適用するアクセルペダル装置の基本構成は、従来と変わりはない。図1に見られるように、パッド7を取り付けたアクセルレバー8に主軸1を取り付けてあり、この主軸1を水平断面コの字状の取付ブラケット2の対面する2枚の側壁9,9に貫通して軸着している。アクセルレバー8は、取付ブラケット2に弾支した復帰用コイルバネ10により、初期位置への復帰方向に付勢している。踏込量はアクセルレバー8にアクセル開度センサ連結部11によって電気的にアクセル開度センサ(図示略)に読み取られ、前記踏込量に応じてアクセル機構(図示略)を操作する。このアクセルペダル装置において、ヒステリシス特性は復帰用コイルバネ10の反発力と、本発明に基づく摺動抵抗Fとの掛け合わせによって実現する。
【0011】
本発明を適用した主軸1近傍は、図2に見られるように、互いが離隔するように主軸1の軸方向に付勢した樹脂製スペーサ3及びブッシュ4を、この主軸1の回動方向に回動しないように、それぞれに適合する取付ブラケット2の係合孔12,13に係合状態で取り付けている。スペーサ3はスペーサ用係合孔12に嵌合する半径方向に延在した係合突部14,14を有し、ブッシュ4は外形を略方形断面としてブッシュ係合孔13に係合するので、主軸1の回動方向に回らない(図3参照)。スペーサ3及びブッシュ4の離隔方向への付勢は、両者間に介装する反発用コイルバネ15により実現している。
【0012】
主軸1には金属製フランジ16を設けてあり、スペーサ3及びブッシュ4を貫通する端部に雌ネジ部17を形成し、ワッシャ18(金属製)を介して締付ナット19を螺合している。ワッシャ18が前記フランジ16と対になる。スペーサ内摺接面(スペーサ端面)20とフランジ外摺接面(フランジ内面)21とが、ブッシュ内摺接面(ブッシュ端面)5とワッシャ外摺接面(ワッシャ内面)22とがそれぞれ摺接し、摺動抵抗Fを発生させる。すなわち、主軸1の軸方向にのみ移動可能なスペーサ3及びブッシュ4をフランジ16及びワッシャ18で挟持し、反発用コイルバネ15の反発力が摺動抵抗Fを作り出すわけである。反発用コイルバネ15の反発力は、締付ナット19の螺合量で加減できるので、摺動抵抗Fの調節が容易な利点がある。
【0013】
図2の例は、スペーサ内摺接面20やブッシュ内摺接面5が共に平坦であり、対応するフランジ外摺接面21やワッシャ外摺接面22との摺接範囲Sは、スペーサ3又はブッシュ4の磨耗によっても基本的には変化しない。しかし、実際の運用状況下にあっては、磨耗によって発生する細かな屑等によって摩擦力Mが増加することが知られている。そこで、こうした磨耗等に基づく経時的な摩擦力Mの変動による摺動抵抗Fの変動を抑制したものが、図4及び図5に示す構成のアクセルペダル装置である。
【0014】
摺動抵抗Fの大きさは、簡易には内摺接面5,20の外摺接面21,22に対する摺接範囲Sで発生する摩擦力M(摺接範囲Sの大小及び摺接範囲Sの状態で決定する)×内摺接面5,20の主軸1中心からの半径Rに従う。例えば図4に見られるように、スペーサ内摺接面20やブッシュ内摺接面5に、フランジ外摺接面21やワッシャ外摺接面22に対して断面凹形状に傾斜したテーパ面6を形成すると、初期の摺動抵抗F1は小さな接面範囲S1×大きな半径R1に従う。
【0015】
ところが、テーパ面6を形成した各内摺接面5,20が経時的に磨耗するとテーパ面が小さくなり、図5に見られるように、摺動抵抗F2は大きな接面範囲S2×小さな半径R2に従うようになる。摺接範囲S2の表面状態は一様でないために、摺動抵抗F1と摺動抵抗F2とを完全に一致させることは難しいが、これら摺動抵抗F1,F2を決定付ける要素の一方が増加しながらも他方が減少することで、比較的安定した摺動抵抗Fが得られるようになるわけである。こうした摺動抵抗Fの安定化の効果は、テーパ面を外摺接面に形成しても、また内外両摺接面双方にテーパ面を形成しても同様に得ることができる。
【0016】
【発明の効果】
本発明により、アクセルペダル装置において良好なヒステリシス特性を得る構造を、従来に比べて簡素化し、部品点数を削減することができる。部品点数の増加は、部品自体の製造コストの増加や組立工数の増加を招く。逆に言えば、本発明によって、より一層のコスト低減を図ることができるようになる。また、締付ナットによる摺動抵抗の調節機能は、本発明の汎用性を実現し、部品の共通化を可能にする。更に、摺接面におけるテーパ面の形成は、実運用下における摺動抵抗の安定をもたらし、良好なヒステリシス特性の安定した維持を実現する効果を有する。
【図面の簡単な説明】
【図1】本発明を適用したアクセルペダル装置全体を表した正面図である。
【図2】本発明該当部位である主軸近傍を表した拡大断面図である。
【図3】取付ブラケットに対するスペーサ及びブッシュの取付関係を表した斜視図である。
【図4】スペーサ及びブッシュの内摺接面に断面凹形状に傾斜したテーパ面を形成した別例の図2相当拡大断面図である。
【図5】経時的にスペーサ及びブッシュが磨耗した状態を表した別例の図2相当拡大断面図である。
【符号の説明】
1 主軸
2 取付ブラケット
3 スペーサ
4 ブッシュ
5 ブッシュ内摺接面(ブッシュ端面)
15 反発用コイルバネ
16 ランジ
18 ワッシャ
19 締付ナット
20 スペーサ内摺接面(スペーサ端面)
21 フランジ外摺接面(フランジ内面)
22 ワッシャ外摺接面(ワッシャ内面)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an accelerator pedal device for an automobile or the like.
[0002]
[Prior art]
The operability of an accelerator pedal that is responsible for an acceleration operation of an automobile or the like depends on a change in the depression force corresponding to the depression amount of the accelerator, that is, a hysteresis characteristic. For example, in Japanese Patent Application Laid-Open No. 06-299874 “Vehicle Accelerator Pedal Device”, the accelerator pedal is restored by distorting a spring sandwiched between a first rotor and a second rotor that rotate together with a rotating shaft. A structure that generates force is presented. A steel ball groove that supports the steel ball is formed obliquely on the opposing end surface of the second rotor and the stopper, and the steel ball groove comes to face at a shallow portion as the return force increases, so it rotates. The pressure applied to the rotating shaft side friction plate rotating integrally with the shaft and the housing side friction plate fixed to the housing is increased, and a movement drag corresponding to the restoring force is applied to the accelerator pedal.
[0003]
Japanese Patent Application Laid-Open No. 11-059220 “Accelerator Pedal Device” has a bracket provided with a hole through which the spindle is inserted, a spindle inserted and supported rotatably in the hole of the bracket, and an accelerator pedal. An accelerator pedal device is provided that includes a pedal arm fixed to the end of a shaft, and a return spring that is arranged around a support shaft and biases the pedal arm in a counter-depressing direction. An accelerator opening sensor is mounted on the bracket so as to generate a signal indicating the accelerator opening according to the rotation angle of the built-in rotor, and the engaging portion provided at the tip of the rotor and the pedal arm of the accelerator opening sensor Are connected via a crank mechanism. Thus, the rotation resistance adjusting mechanism is provided that adjusts the rotation frictional resistance of the support shaft by changing the holding force by sandwiching the peripheral portion of the hole of the bracket between the two members fitted on the support shaft. .
[0004]
[Problems to be solved by the invention]
The structure for obtaining good hysteresis characteristics in the accelerator pedal device is complicated and the number of parts tends to increase. This is a problem that causes high costs, and the above Japanese Patent Laid-Open No. 06-299874 can be regarded as an example in which a complicated structure causes high costs. On the other hand, Japanese Patent Application Laid-Open No. 11-059220 discloses a problem of providing a simple structure with a small number of parts and ensuring good accelerator operability. Certainly, although the structure is simplified, it is necessary to hold the bracket between the shaft cylinder and the bush in order to generate the rotational frictional resistance, so that the number of parts is still insufficiently reduced. Therefore, we studied to develop a frictional resistance generating structure that can achieve good hysteresis characteristics while reducing the number of parts.
[0005]
[Means for Solving the Problems]
Was developed result of examination is, the main shaft 1 is pivotally attached to the mounting bracket 2 to the vehicle body, a spacer 3 and was biased in the axial direction of the main shaft 1 to be separated from each other by interposing a repulsion coil spring 15 Bush 4 engages the mounting bracket 2 so as not to rotate in the rotational direction of the spindle 1, attach the flange 16 and the washer 18 in sliding contact with the spacer 3 and the bush 4 respectively on the main shaft 1, the spacer 3 does not rotate Further, the inner sliding contact surface 20 and the inner sliding contact surface 5 of the bush 4 are brought into sliding contact with the flange outer sliding contact surface 21 and the washer outer sliding contact surface 22 of the flange 16 and the washer 18 rotating according to the main shaft 1. accelerator pedal apparatus der for generating sliding resistance (= frictional resistance) is, the spacer in the sliding surface 20 and the bush sliding surface 5 of the spacer 3 and the bush 4, the flat flange outside the flange 16 and the washer 18 It you wherein forming the tapered surface 6,6 which is inclined concave cross-sectional profile with respect to the slidable contact surface 21 and the washer outer sliding surface 22.
[0006]
The present invention is to reduce and the development of a stable slide resistance with the number of components intended to engage the spacer 3 and the bush 4 is not rotated relative to the main shaft to the mounting bracket 2, to the spacer 3 and the bush 4 The flange 16 and the washer 18 that are in sliding contact with each other are attached to the main shaft 1 . The spacer 3 and the bush 4 engage with the mounting bracket 2 with a cross-sectional shape excluding a circular cross-section so that the spacer 3 and the bush 4 do not rotate together. However, if the spacer 3 and the bush 4 are movable in the axial direction of the main shaft, the main shaft is biased in the axial direction. Accordingly, they move away from each other and press against the flange 16 and the washer 18 attached to the main shaft to generate sliding resistance.
[0007]
Flange 16 and the washer 18 are attached to the main shaft 1 so as to sandwich the spacer 3 and the bush 4. In this case, the flange 16 and the washer 18 can be tightened to the spacer 3 and the bush 4 by the tightening nut 19 screwed to the main shaft 1 , and the sliding resistance generated by the screwing amount of the tightening nut 19 is increased or decreased. If it is possible, it is possible to easily adjust the sliding resistance. For example, it is possible to create an appropriate sliding resistance for each vehicle model while sharing the main shaft structure for each vehicle type.
[0008]
Further, the spacer 3 and the bush 4 have an inner sliding contact surface 20 and an inner sliding contact surface 5 of the bush, and a flat flange outer sliding contact surface 21 and a washer outer sliding contact surface 22 of the flange 16 and the washer 18. if the structure forming the tapered surface 6,6 which is inclined, it suppresses the change with time in the sliding resistance. That is, the sliding resistance F obtained by the accelerator pedal device of the present invention is within the sliding contact range S of the flange inner sliding contact surface 20 and the bush inner sliding contact surface 5 with respect to the flange outer sliding contact surface 21 and the washer outer sliding contact surface 22. Friction force M generated (varies depending on the state of the member) × radius R from the center of the inner sliding contact surface (the flange 16 and the washer 18 do not rotate). If the resin spacer 3 and the bush 4 are scraped, the frictional force M generated in the increased sliding contact range S increases, but the radius R becomes smaller, resulting in sliding. The fluctuation of the resistance F can be suppressed. Similarly, on the flange outer sliding contact surface and the washer outer sliding contact surface of the flange and washer, a flat spacer inner sliding surface of the spacer and bush and a tapered surface inclined in a concave section with respect to the inner sliding contact surface of the bush are formed. Even with such a structure, the sliding resistance F can be stabilized.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing the whole accelerator pedal device to which the present invention is applied, FIG. 2 is an enlarged sectional view showing the vicinity of a main shaft 1 corresponding to the present invention, and FIG. 3 shows spacers 3 and bushes 4 with respect to a mounting bracket 2. FIG. 4 is an enlarged sectional view corresponding to FIG. 2 showing another example in which a tapered surface 6 inclined in a concave section is formed on the inner sliding contact surfaces 5 and 20 of the spacer 3 and the bush 4. 5 is an enlarged cross-sectional view corresponding to FIG. 2 showing another example in which the spacer 3 and the bush 4 are worn over time.
[0010]
The basic configuration of the accelerator pedal device to which the present invention is applied is not different from the conventional one. As shown in FIG. 1, a main shaft 1 is attached to an accelerator lever 8 to which a pad 7 is attached, and the main shaft 1 passes through two side walls 9 and 9 facing a mounting bracket 2 having a U-shaped horizontal section. And I am wearing it. The accelerator lever 8 is urged in the return direction to the initial position by the return coil spring 10 which is elastically supported on the mounting bracket 2. The stepping amount is electrically read by the accelerator opening sensor (not shown) by the accelerator opening sensor connecting portion 11 to the accelerator lever 8, and the accelerator mechanism (not shown) is operated according to the stepping amount. In this accelerator pedal device, the hysteresis characteristic is realized by multiplying the repulsive force of the return coil spring 10 and the sliding resistance F according to the present invention.
[0011]
Spindle 1 neighborhood according to the present invention, as seen in FIG. 2, the resin spacer 3 and the bush 4 which is urged in the axial direction of the main shaft 1 so as each other away, rotational direction of the main shaft 1 So that they are not engaged with each other, they are attached to the engaging holes 12 and 13 of the fitting bracket 2 that fits each other. The spacer 3 has radially extending engaging protrusions 14 and 14 that fit into the spacer engaging hole 12, and the bush 4 engages with the bush engaging hole 13 with a substantially rectangular cross section. It does not rotate in the rotation direction of the main shaft 1 (see FIG. 3). The urging of the spacer 3 and the bush 4 in the separation direction is realized by a repulsive coil spring 15 interposed therebetween.
[0012]
The main shaft 1 is provided with a metallic steel flange 16 to form a female screw portion 17 at an end extending through the spacer 3 and the bush 4, screwing the tightening nut 19 via a washer 18 (made of metal) is doing. Washer 18 ing paired with the flange 16. The inner sliding surface of the spacer (spacer end surface) 20 and the outer sliding surface of the flange (flange inner surface) 21 are in sliding contact with the inner sliding surface of the bush (bush end surface) 5 and the outer washer sliding surface of the washer (inner washer inner surface) 22, respectively. The sliding resistance F is generated. That is, the spacer 3 and the bush 4 that are movable only in the axial direction of the main shaft 1 are sandwiched between the flange 16 and the washer 18, and the repulsive force of the repulsive coil spring 15 creates the sliding resistance F. Since the repulsive force of the repulsive coil spring 15 can be adjusted by the screwing amount of the tightening nut 19, there is an advantage that the sliding resistance F can be easily adjusted.
[0013]
In the example of FIG. 2, the inner sliding surface 20 of the spacer and the inner sliding surface 5 of the bush are both flat, and the sliding contact range S with the corresponding flange outer sliding surface 21 and washer outer sliding surface 22 is the spacer 3. Or, basically, it does not change even if the bush 4 is worn. However, under actual operating conditions, it is known that the frictional force M increases due to fine debris generated by wear. Therefore, the accelerator pedal device having the configuration shown in FIGS. 4 and 5 is one that suppresses the variation of the sliding resistance F due to the variation of the frictional force M over time due to such wear.
[0014]
The magnitude of the sliding resistance F is simply the friction force M (the size of the sliding contact range S and the sliding contact range S) generated in the sliding contact range S of the inner sliding contact surfaces 5 and 20 with respect to the outer sliding contact surfaces 21 and 22. ) X in accordance with the radius R from the center of the main shaft 1 of the inner sliding contact surfaces 5, 20. For example, as shown in FIG. 4, a tapered surface 6 inclined in a concave shape with respect to the flange outer sliding contact surface 21 and the washer outer sliding contact surface 22 is formed on the spacer inner sliding contact surface 20 and the bush inner sliding contact surface 5. Once formed, the initial sliding resistance F1 follows a small contact area S1 × a large radius R1.
[0015]
However, as the inner sliding contact surfaces 5 and 20 forming the tapered surface 6 wear with time, the tapered surface becomes smaller, and as shown in FIG. 5, the sliding resistance F2 has a large contact surface range S2 × small radius R2. To follow. Since the surface condition of the sliding contact range S2 is not uniform, it is difficult to make the sliding resistance F1 and the sliding resistance F2 completely coincide with each other, but one of the factors that determine the sliding resistances F1 and F2 increases. However, a relatively stable sliding resistance F can be obtained by decreasing the other. The effect of stabilizing the sliding resistance F can be obtained in the same manner even if the tapered surface is formed on the outer sliding contact surface or the tapered surfaces are formed on both the inner and outer sliding contact surfaces.
[0016]
【The invention's effect】
According to the present invention, the structure for obtaining good hysteresis characteristics in the accelerator pedal device can be simplified and the number of parts can be reduced compared to the conventional structure. The increase in the number of parts leads to an increase in manufacturing cost of the parts themselves and an increase in assembly man-hours. In other words, the present invention can achieve further cost reduction. Further, the adjustment function of the sliding resistance by the tightening nut realizes the versatility of the present invention, and enables common parts. Further, the formation of the tapered surface on the sliding contact surface brings about the effect of realizing stable maintenance of good hysteresis characteristics by bringing about stability of sliding resistance under actual operation.
[Brief description of the drawings]
FIG. 1 is a front view showing an entire accelerator pedal device to which the present invention is applied.
FIG. 2 is an enlarged cross-sectional view showing the vicinity of a main shaft, which is a portion corresponding to the present invention.
FIG. 3 is a perspective view showing a mounting relationship between a spacer and a bush with respect to a mounting bracket.
FIG. 4 is an enlarged cross-sectional view corresponding to FIG. 2 of another example in which a tapered surface inclined in a concave cross section is formed on the inner sliding contact surfaces of the spacer and the bush.
FIG. 5 is an enlarged sectional view corresponding to FIG. 2 showing another example in which the spacer and the bush are worn over time.
[Explanation of symbols]
1 Spindle 2 Mounting bracket 3 Spacer 4 Bush 5 Bush inner sliding contact surface (Bush end surface)
15 Coil spring for repulsion
16 flange
18 Washers
19 Tightening nut
20 Spacer inner sliding contact surface (spacer end surface)
21 Flange outer sliding contact surface (flange inner surface)
22 Washer outer sliding contact surface (Washer inner surface)

Claims (2)

車体への取付ブラケット2に主軸1を軸着し、反発用コイルバネ15を介装して互いが離隔するように主軸1の軸方向に付勢したスペーサ3及びブッシュ4を該主軸1の回動方向に回動しないように取付ブラケット2に係合し、スペーサ3及びブッシュ4それぞれに摺接するフランジ16及びワッシャ18を主軸1に取り付け、回動しないスペーサ3及びブッシュ4のスペーサ内摺接面20及びブッシュ内摺接面5を、主軸1に従って回動するフランジ16及びワッシャ18のフランジ外摺接面21及びワッシャ外摺接面22に摺接させることにより摺動抵抗を発生させるアクセルペダル装置であって、
スペーサ3及びブッシュ4のスペーサ内摺接面20及びブッシュ内摺接面5に、フランジ16及びワッシャ18の平坦なフランジ外摺接面21及びワッシャ外摺接面22に対して断面凹形状に傾斜したテーパ面6,6を形成したことを特徴とするアクセルペダル装置。
The main shaft 1 is pivotally attached to the mounting bracket 2 to the vehicle body, repulsion coil springs 15 interposed to the spacer 3 and the bush 4 of the main shaft 1 times that biases in the axial direction of the main shaft 1 as to be separated with each other the engages the mounting bracket 2 so as not to rotate in the moving direction, the spacer 3 and the bush 4 attach the sliding contact flange 16 and the washer 18 to the main shaft 1 respectively, pivot and not the spacer 3 and the bush 4 of the spacer in the sliding the contact surface 20 and the bush sliding surface 5, Ru generates sliding resistance by sliding contact with the flange outer sliding surface 21 and the washer outer sliding surface 22 of the flange 16 and the washer 18 to rotate according to the main shaft 1 a a Kuserupedaru apparatus,
The spacer 3 and the bushing 4 have an inner sliding contact surface 20 and a bushing sliding contact surface 5 inclined to the flat flange outer sliding contact surface 21 and the washer outer sliding contact surface 22 of the flange 16 and washer 18 in a concave cross section. An accelerator pedal device characterized in that the tapered surfaces 6 and 6 are formed .
フランジ16及びワッシャ18が主軸1に螺合する締付ナット19によってスペーサ3及びブッシュ4に対して締め付け可能であり、該締付ナット19の螺合量によって発生する摺動抵抗を増減可能にする請求項1記載のアクセルペダル装置。The flange 16 and the washer 18 can be tightened against the spacer 3 and the bush 4 by a tightening nut 19 that is screwed to the main shaft 1, and the sliding resistance generated by the screwing amount of the tightening nut 19 can be increased or decreased. The accelerator pedal device according to claim 1.
JP2000395346A 2000-12-26 2000-12-26 Accelerator pedal device Expired - Fee Related JP4832638B2 (en)

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JP2653191B2 (en) * 1989-11-20 1997-09-10 日産自動車株式会社 Automotive pedal bearing structure
JPH03168337A (en) * 1989-11-27 1991-07-22 Nippondenso Co Ltd Accelerator pedal for vehicle
JP3185498B2 (en) * 1992-11-05 2001-07-09 株式会社デンソー Accelerator device for vehicle
JPH1159220A (en) * 1997-08-21 1999-03-02 Aisan Ind Co Ltd Acceleration pedal device
JP3466465B2 (en) * 1998-03-18 2003-11-10 株式会社日立ユニシアオートモティブ Rotation angle detector
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JPH11342763A (en) * 1998-06-04 1999-12-14 Aisan Ind Co Ltd Acceleration pedal device
JP2000085405A (en) * 1998-09-17 2000-03-28 Kuroishi Tekko Kk Accelerator pedal device for vehicle
JP2001147728A (en) * 1999-11-19 2001-05-29 Oiles Ind Co Ltd Pedal device for automobile, and damper suitable for the pedal device

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