JP5062211B2 - Operation amount detection device - Google Patents

Operation amount detection device Download PDF

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JP5062211B2
JP5062211B2 JP2009076632A JP2009076632A JP5062211B2 JP 5062211 B2 JP5062211 B2 JP 5062211B2 JP 2009076632 A JP2009076632 A JP 2009076632A JP 2009076632 A JP2009076632 A JP 2009076632A JP 5062211 B2 JP5062211 B2 JP 5062211B2
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elastic member
brake pedal
operation amount
detection device
connecting shaft
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JP2010231367A (en
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宏 磯野
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Toyota Motor Corp
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Description

本発明は、ブレーキペダルなどの操作部材の回動動作を操作ロッドの直線動作に変換して操作対象部材に伝達する操作量を検出する操作量検出装置に関するものである。   The present invention relates to an operation amount detection device that detects an operation amount that is transmitted to an operation target member by converting a rotation operation of an operation member such as a brake pedal into a linear operation of an operation rod.

例えば、車両のブレーキ装置として、ブレーキペダルから入力された操作量（ペダルストロークや踏力など）に応じてブレーキ装置による制動力、つまり、このブレーキ装置を駆動するホイールシリンダへ供給する制動油圧を電気的に制御する電子制御式ブレーキ装置としてＥＣＢ（Electronically Controlled Brake）が知られている。   For example, as a braking device for a vehicle, a braking force by a braking device, that is, a braking hydraulic pressure supplied to a wheel cylinder that drives the braking device is electrically generated according to an operation amount (pedal stroke, pedaling force, etc.) input from a brake pedal. An ECB (Electronically Controlled Brake) is known as an electronically controlled brake device that is controlled in a controlled manner.

このＥＣＢは、ポンプによって昇圧した油圧をアキュムレータに蓄えておき、運転者の制動要求に応じて調圧制御して制動油圧としてのホイールシリンダに供給するものである。即ち、運転者がブレーキペダルを踏み込むと、マスタシリンダがその操作量に応じた油圧を発生すると共に、作動油の一部がストロークシミュレータに流れ込み、ブレーキペダルの踏力に応じたブレーキペダルの操作量が調整される一方、ブレーキＥＣＵはペダルストロークに応じて車両の目標減速度を設定し、各車輪に付与する制動力分配を決定し、アキュムレータから各ホイールシリンダに対して所定の油圧を付与するようにしている。   This ECB stores the hydraulic pressure boosted by the pump in an accumulator, and controls the pressure according to the driver's braking request and supplies it to the wheel cylinder as the braking hydraulic pressure. That is, when the driver depresses the brake pedal, the master cylinder generates a hydraulic pressure corresponding to the operation amount, and a part of the hydraulic oil flows into the stroke simulator, and the operation amount of the brake pedal corresponding to the depression force of the brake pedal is reduced. On the other hand, the brake ECU sets the target deceleration of the vehicle according to the pedal stroke, determines the braking force distribution to be applied to each wheel, and applies a predetermined hydraulic pressure from the accumulator to each wheel cylinder. ing.

このような電子制御式ブレーキ装置では、ブレーキペダルから入力された操作量（ペダルストロークや踏力など）を高精度に検出する必要がある。従来のブレーキペダルの操作量検出装置としては、下記特許文献１、２に記載されたものがある。   In such an electronically controlled brake device, it is necessary to detect an operation amount (pedal stroke, pedal effort, etc.) input from the brake pedal with high accuracy. Conventional brake pedal operation amount detection devices include those described in Patent Documents 1 and 2 below.

特許文献１に記載された操作力関連信号出力装置は、ブレーキ操作部材に、このブレーキ操作部材と入力ロッドとの相対移動により入力ロッドの軸線と直角な一軸線のまわりに回動する回動部材を取付け、弾性部材によりブレーキ操作部材と入力ロッドとをその入力ロッドの軸方向において互いに離間する向きに付勢し、ブレーキ操作部材と回動部材との間にそれらの相対移動により作動して操作力に関連した信号を出力する信号出力装置を設けたものである。また、特許文献２に記載されたブレーキ操作力検出装置は、装置本体に相対移動可能な検出子を保持し、その検出子と機械的に連携させられて検出子からの荷重を検出する荷重検出器とを設け、運転者により操作されるブレーキ操作部材のブレーキ操作力を検出するものであって、検出子の移動量に対する荷重検出器の出力の比を検出子の移動量が大きい状態において小さい状態より小さくする非線形特性付与装置を設けたものである。   The operation force related signal output device described in Patent Document 1 is a rotating member that rotates around a single axis perpendicular to the axis of the input rod by relative movement between the brake operating member and the input rod. The brake operation member and the input rod are urged by the elastic member in directions away from each other in the axial direction of the input rod, and are operated by the relative movement between the brake operation member and the rotation member. A signal output device that outputs a signal related to force is provided. In addition, the brake operation force detection device described in Patent Document 2 holds a detector that can be moved relative to the main body of the device, and detects the load from the detector in mechanical association with the detector. And the ratio of the output of the load detector to the amount of movement of the detector is small when the amount of movement of the detector is large. A non-linear characteristic imparting device that makes the state smaller than the state is provided.

特許第３４５３５０７号公報Japanese Patent No. 3453507 特開２００１−０１８７６８号公報JP 2001-018768 A

上述した従来のブレーキペダルの操作量検出装置では、ブレーキ操作部材の操作力を検出子に伝達するための回動レバーが必要となり、また、この回動レバーに対して荷重制限機構などにより検出に必要な荷重のみを取り出す機構も必要となる。そのため、検出機構や荷重制限機構などの構造が複雑となり、製造コストが上昇してしまう。また、構造の複雑化によりメンテナンス性が低下してしまうという問題もある。   The conventional brake pedal operation amount detection device described above requires a rotation lever for transmitting the operation force of the brake operation member to the detector, and the rotation lever can be detected by a load limiting mechanism or the like. A mechanism for taking out only the necessary load is also required. This complicates the structure of the detection mechanism, the load limiting mechanism, etc., and increases the manufacturing cost. In addition, there is a problem that the maintainability deteriorates due to the complicated structure.

本発明は、このような問題を解決するためのものであって、構造を簡素化して製造コストの低減を可能とする一方で荷重制限機能を構成可能とする操作量検出装置を提供することを目的とする。   The present invention is intended to solve such a problem, and provides an operation amount detection device that can reduce the manufacturing cost while simplifying the structure and configuring the load limiting function. Objective.

上述した課題を解決し、目的を達成するために、本発明の操作量検出装置は、操作部材の回動動作を操作ロッドの直線動作に変換して操作対象部材に伝達される操作量を検出する操作量検出装置において、前記操作部材と前記操作ロッドを連結する連結軸と、一方側が前記連結軸に対して前記操作ロッドの軸線方向に対して交差する方向に離間した前記操作部材の凸部に接触して支持され、他方側が前記連結軸に連結される弾性部材と、該弾性部材の弾性変形量を検出して操作量として出力する検出部と、を備えることを特徴とするものである。   In order to solve the above-described problems and achieve the object, the operation amount detection device of the present invention detects the operation amount transmitted to the operation target member by converting the rotation operation of the operation member into the linear operation of the operation rod. In the operation amount detection device, the operating shaft and the connecting shaft that connects the operating rod, and the convex portion of the operating member that is separated in a direction that one side intersects the axial direction of the operating rod with respect to the connecting shaft And an elastic member whose other side is connected to the connecting shaft, and a detection unit that detects an elastic deformation amount of the elastic member and outputs it as an operation amount. .

本発明の操作量検出装置では、前記弾性部材は、長手方向における中間部が前記他方側として前記連結軸に連結され、長手方向における各端部が前記一方側として前記操作部材の凸部に接触して支持されることを特徴としている。   In the operation amount detection device of the present invention, the elastic member is connected to the connection shaft with the intermediate portion in the longitudinal direction as the other side, and each end portion in the longitudinal direction contacts the convex portion of the operation member as the one side. It is characterized by being supported.

本発明の操作量検出装置では、前記操作部材と前記弾性部材とが近接する方向に付勢する付勢部材が設けられることを特徴としている。   In the operation amount detection device of the present invention, a biasing member that biases the operation member and the elastic member toward each other is provided.

本発明の操作量検出装置では、前記弾性部材の端部または前記操作部材の凸部に、前記弾性部材と前記操作部材との長手方向における相対移動を規制する拘束部が設けられることを特徴としている。   In the operation amount detection device of the present invention, a restriction portion that restricts relative movement in the longitudinal direction between the elastic member and the operation member is provided at an end of the elastic member or a convex portion of the operation member. Yes.

本発明の操作量検出装置では、前記弾性部材に可動子が固定され、該可動子は、前記連結軸と前記操作ロッドの軸線方向に対して相対移動可能に連結されることを特徴としている。   In the operation amount detection device of the present invention, a mover is fixed to the elastic member, and the mover is connected so as to be movable relative to the axial direction of the connection shaft and the operation rod.

本発明の操作量検出装置では、前記可動子と前記連結軸との相対移動量を規制する規制部が設けられることを特徴としている。   In the operation amount detection device of the present invention, a restricting portion that restricts a relative movement amount between the mover and the connecting shaft is provided.

本発明の操作量検出装置では、前記弾性部材における前記連結軸と前記凸部との間に、前記検出部としての歪センサが設けられることを特徴としている。   In the operation amount detection device of the present invention, a strain sensor as the detection unit is provided between the connecting shaft and the convex portion in the elastic member.

本発明の操作量検出装置によれば、操作部材と操作ロッドを連結する連結軸と、一方側が連結軸に対して操作ロッドの軸線方向に対して交差する方向に離間した操作部材の凸部に接触して支持されて他方側が連結軸に連結される弾性部材と、弾性部材の弾性変形量を検出して操作量として出力する検出部とを設けている。従って、構造を簡素化して製造コストの低減を可能とすることができる一方で、荷重制限機能を構成可能とすることができる。   According to the operation amount detection device of the present invention, the connecting shaft that connects the operating member and the operating rod, and the convex portion of the operating member that is spaced apart in the direction in which one side intersects the axial direction of the operating rod with respect to the connecting shaft. An elastic member that is supported in contact and has the other side connected to the connecting shaft, and a detection unit that detects an elastic deformation amount of the elastic member and outputs it as an operation amount are provided. Therefore, the structure can be simplified and the manufacturing cost can be reduced, while the load limiting function can be configured.

図１は、本発明の実施例１に係る操作量検出装置を表す一部を切り欠いた要部正面図である。FIG. 1 is a front view of an essential part of the operation amount detection device according to the first embodiment of the present invention with a part cut away. 図２は、実施例１の操作量検出装置における連結部の構造を表す図１のII−II断面図である。2 is a cross-sectional view taken along the line II-II in FIG. 1 illustrating the structure of the connecting portion in the manipulated variable detection device according to the first embodiment. 図３は、実施例１の操作量検出装置の全体構成を表す正面図である。FIG. 3 is a front view illustrating the overall configuration of the operation amount detection device according to the first embodiment. 図４は、本発明の実施例２に係る操作量検出装置を表す一部を切り欠いた要部正面図である。FIG. 4 is a front view of an essential part of the manipulated variable detection device according to the second embodiment of the present invention, partly cut away.

以下に、本発明に係る操作量検出装置の実施例を図面に基づいて詳細に説明する。なお、この実施例により本発明が限定されるものではない。   Embodiments of an operation amount detection device according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this Example.

図１は、本発明の実施例１に係る操作量検出装置を表す一部を切り欠いた要部正面図、図２は、実施例１の操作量検出装置における連結部の構造を表す図１のII−II断面図、図３は、実施例１の操作量検出装置の全体構成を表す正面図である。   FIG. 1 is a front view of an essential part of a manipulated variable detection device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating a structure of a connecting portion in the manipulated variable detection device according to the first embodiment. II-II sectional drawing of FIG. 3, FIG. 3 is a front view showing the whole structure of the operation amount detection apparatus of Example 1. FIG.

実施例１の操作量検出装置において、図３に示すように、操作部材としてのブレーキペダル１１は、上端部が図示しない車体に固定される取付ブラケット１２に回動軸１３により回動自在に吊り下げ支持されており、下端部に乗員が踏み込み可能なペダル１４が装着されている。一方、操作ロッド１５は、先端部がブレーキ装置（図示略）を作動制御する操作対象部材としての図示しないマスタシリンダ及びブレーキブースタに連結されている。   In the operation amount detection device of the first embodiment, as shown in FIG. 3, the brake pedal 11 as an operation member is suspended by a rotation shaft 13 on a mounting bracket 12 whose upper end is fixed to a vehicle body (not shown). A pedal 14 that is supported by being lowered and that can be depressed by an occupant is mounted at the lower end. On the other hand, the operating rod 15 is connected to a master cylinder and a brake booster (not shown) as an operation target member whose operation is to control the operation of a brake device (not shown).

また、操作ロッド１５は、基端部がクレビス１６に螺合し、ロックナット１７によりその弛緩が防止されている。このクレビス１６は、二股部１６ａ，１６ｂ（図２参照）を有しており、ブレーキペダル１１の中間部におけるその両側に、この二股部１６ａ，１６ｂが所定間隔をもって位置し、連結軸１８がブレーキペダル１１及び二股部１６ａ，１６ｂを貫通することで、互いに回動自在に連結されている。   The operation rod 15 is screwed into the clevis 16 at the base end and is prevented from loosening by the lock nut 17. The clevis 16 has bifurcated portions 16a and 16b (see FIG. 2). The bifurcated portions 16a and 16b are located at both sides of the intermediate portion of the brake pedal 11 with a predetermined interval, and the connecting shaft 18 is braked. By passing through the pedal 11 and the bifurcated portions 16a and 16b, the pedal 11 and the bifurcated portions 16a and 16b are connected to each other so as to be rotatable.

従って、乗員がブレーキペダル１１を踏み込むと、このブレーキペダル１１が回動軸１３を介して回動し、その操作量（操作力）が連結軸１８及びクレビス１６を介して操作ロッド１５に伝達されることで、この操作ロッド１５が軸方向に移動し、ブレーキブースタ及びマスタシリンダを作動させることができる。   Therefore, when the occupant steps on the brake pedal 11, the brake pedal 11 rotates through the rotation shaft 13, and the operation amount (operation force) is transmitted to the operation rod 15 through the connecting shaft 18 and the clevis 16. Thus, the operating rod 15 moves in the axial direction, and the brake booster and the master cylinder can be operated.

実施例１の操作量検出装置は、ブレーキペダル１１の回動動作を操作ロッド１５の直線動作に変換してマスタシリンダ及びブレーキブースタに伝達される操作量として、ブレーキペダルストローク（または、ブレーキペダル踏力）を検出するものである。そして、実施例１では、上述したブレーキペダル１１に対して、操作量検出ユニット２０が一つのモジュールとして装着可能となっている。   The operation amount detection device according to the first embodiment converts the rotation operation of the brake pedal 11 into a linear operation of the operation rod 15 and transmits the brake pedal stroke (or brake pedal depression force) as the operation amount transmitted to the master cylinder and the brake booster. ) Is detected. In the first embodiment, the operation amount detection unit 20 can be mounted as one module on the brake pedal 11 described above.

ここで、この操作量検出ユニット２０について詳細に説明する。   Here, the operation amount detection unit 20 will be described in detail.

操作量検出ユニット２０において、図１及び図２に示すように、操作ロッド１５が連結されるクレビス１６は、二股部１６ａ，１６ｂが、ブレーキペダル１１の中間部におけるその板厚方向の両側に所定間隔をもって配置され、この二股部１６ａ，１６ｂにそれぞれ連結孔１６ｃ，１６ｄが形成され、また、ブレーキペダル１１には、連結孔１１ａが形成されている。そして、頭部１８ａを有する連結軸１８が、二股部１６ａ，１６ｂの一方側から各連結孔１６ｃ，１６ｄ及び連結孔１１ａを貫通し、先端部にクリップ１８ｂが係止することで抜け止めが施されている。   As shown in FIGS. 1 and 2, in the operation amount detection unit 20, the clevis 16 to which the operation rod 15 is connected has bifurcated portions 16 a and 16 b on both sides in the plate thickness direction at the intermediate portion of the brake pedal 11. The connecting holes 16c and 16d are formed in the bifurcated portions 16a and 16b, respectively, and the connecting hole 11a is formed in the brake pedal 11. The connecting shaft 18 having the head portion 18a passes through the connecting holes 16c and 16d and the connecting hole 11a from one side of the bifurcated portions 16a and 16b, and the clip 18b is locked to the tip portion to prevent the connecting shaft 18 from coming off. Has been.

弾性部材２１は、金属または合成樹脂などにより製造され、所定厚さを有すると共に、ブレーキペダル１１の長手方向に沿って所定長さを有し、所定の荷重により弾性変形可能に構成されている。この弾性部材２１は、ブレーキペダル１１の前端側に、ブレーキペダル１１の長手方向に沿って延設される板形状をなす本体部２２と、この本体部２２における長手方向の中間部からブレーキペダル１１の各平面部に沿うようにほぼ直角に折曲される一対のレバー部２３ａ，２３ｂとから構成されている。   The elastic member 21 is made of metal or synthetic resin, has a predetermined thickness, has a predetermined length along the longitudinal direction of the brake pedal 11, and is configured to be elastically deformable by a predetermined load. The elastic member 21 includes a main body 22 having a plate shape extending along the longitudinal direction of the brake pedal 11 on the front end side of the brake pedal 11, and an intermediate portion of the main body 22 in the longitudinal direction from the brake pedal 11. It is comprised from a pair of lever parts 23a and 23b bent at a substantially right angle so that each plane part may be followed.

本実施例にて、弾性部材２１は、上端部及び下端部が本発明の一方側であり、中間部が本発明の他方側であり、この中間部に本発明の可動子としてのレバー部２３ａ，２３ｂが一体に設けられている。この場合、弾性部材２１を、一つの板材料をプレス成形等により本体部２２とレバー部２３ａ，２３ｂとが一体となるように構成したが、平板形状をなす本体部にコ字形状をなすレバー部をボルトや溶接により接合することで、別部材により弾性部材を構成してもよい。   In this embodiment, the elastic member 21 has an upper end portion and a lower end portion on one side of the present invention, an intermediate portion on the other side of the present invention, and a lever portion 23a as a mover of the present invention in the intermediate portion. , 23b are integrally provided. In this case, the elastic member 21 is configured such that the main body portion 22 and the lever portions 23a and 23b are integrated by pressing one plate material or the like, but the lever having a U-shape is formed on the main body portion having a flat plate shape. The elastic member may be constituted by another member by joining the parts by bolts or welding.

弾性部材２１におけるレバー部２３ａ，２３ｂは、ブレーキペダル１１におけるその板厚方向の両側に所定間隔をもって位置している。そして、連結軸１８が、クレビス１６の二股部１６ａ，１６ｂとブレーキペダル１１の連結孔１１ａと共に、レバー部２３ａ，２３ｂの支持孔２４ａ，２４ｂを貫通することで、クレビス１６とブレーキペダル１１と弾性部材２１が相対的に回動自在に連結される。   The lever portions 23a and 23b in the elastic member 21 are located at predetermined intervals on both sides of the brake pedal 11 in the plate thickness direction. The connecting shaft 18 penetrates the support holes 24a and 24b of the lever portions 23a and 23b together with the bifurcated portions 16a and 16b of the clevis 16 and the connecting hole 11a of the brake pedal 11, so that the clevis 16 and the brake pedal 11 are elastic. The member 21 is connected so as to be relatively rotatable.

また、弾性部材２１における本体部２２は、レバー部２３ａ，２３ｂに対して、各端部２２ａ，２２ｂがブレーキペダル１１における長手方向の上方及び下方に延出している。一方、ブレーキペダル１１は、その前端側に、弾性部材２１における本体部２２の各端部２２ａ，２２ｂに対向して凸部２５，２６が一体に形成されている。また、ブレーキペダル１１と弾性部材２１との間には、付勢部材としての樹脂製のクリップ２７が架設されており、このクリップ２７の付勢力（弾性力）により、弾性部材２１がブレーキペダル１１に接近する方向に付勢支持されている。   The main body 22 of the elastic member 21 has end portions 22a and 22b extending upward and downward in the longitudinal direction of the brake pedal 11 with respect to the lever portions 23a and 23b. On the other hand, on the front end side of the brake pedal 11, convex portions 25 and 26 are integrally formed so as to be opposed to the end portions 22 a and 22 b of the main body portion 22 in the elastic member 21. Further, a resin clip 27 as an urging member is installed between the brake pedal 11 and the elastic member 21, and the elastic member 21 is urged by the urging force (elastic force) of the clip 27. Energized and supported in the direction of approaching.

このクリップ２７は、コ字形状をなし、ブレーキペダル１１の後端側を跨ぐように配置され、各端部に形成された係止部２７ａ，２７ｂが弾性部材２１におけるレバー部２３ａ，２３ｂに形成された係止孔２８ａ，２８ｂに係止している。そのため、弾性部材２１は、クリップ２７の付勢力によりブレーキペダル１１側に付勢され、本体部２２における各端部２２ａ，２２ｂが、ブレーキペダル１１における各凸部２５，２６に当接（接触）して支持されている。   The clip 27 has a U-shape and is disposed so as to straddle the rear end side of the brake pedal 11, and locking portions 27 a and 27 b formed at the respective end portions are formed on the lever portions 23 a and 23 b of the elastic member 21. The locking holes 28a and 28b are locked. Therefore, the elastic member 21 is urged toward the brake pedal 11 by the urging force of the clip 27, and the end portions 22 a and 22 b of the main body portion 22 abut (contact) the convex portions 25 and 26 of the brake pedal 11. And is supported.

この場合、弾性部材２１は、上端部及び下端部（一方側）が連結軸１８に対して操作ロッド１５の軸線方向に対して交差（直交）する方向（ブレーキペダル１１の長手方向）に離間したブレーキペダル１１の凸部２５，２６に当接して支持され、他方側（中間部）が連結軸１８に連結されている。また、弾性部材２１は、長手方向における他方側（中間部）にレバー部２３ａ，２３ｂが一体に設けられ、このレバー部２３ａ，２３ｂが連結軸１８に連結されている。   In this case, the elastic member 21 is separated in a direction (longitudinal direction of the brake pedal 11) in which the upper end portion and the lower end portion (one side) intersect (orthogonal) the axial direction of the operation rod 15 with respect to the connecting shaft 18. The brake pedal 11 is supported in contact with the convex portions 25 and 26, and the other side (intermediate portion) is connected to the connecting shaft 18. Further, the elastic member 21 is integrally provided with lever portions 23 a and 23 b on the other side (intermediate portion) in the longitudinal direction, and the lever portions 23 a and 23 b are connected to the connecting shaft 18.

また、ブレーキペダル１１の連結孔１１ａは、真円であって、その内径は、連結軸１８の外径より若干大きく設定されており、両者の間には、所定隙間が形成されている。そのため、弾性部材２１（レバー部２３ａ，２３ｂ）は、連結孔１１ａに対してこの所定隙間だけ操作ロッド１５の軸線方向に沿って相対移動可能となると共に、連結孔１１ａと連結軸１８が本発明の規制部として機能することで、相対移動量が規制される。   The connecting hole 11a of the brake pedal 11 is a perfect circle, and its inner diameter is set to be slightly larger than the outer diameter of the connecting shaft 18, and a predetermined gap is formed between them. Therefore, the elastic member 21 (lever parts 23a, 23b) can be moved relative to the connecting hole 11a along the axial direction of the operating rod 15 by the predetermined gap, and the connecting hole 11a and the connecting shaft 18 are provided in the present invention. The relative movement amount is restricted by functioning as a restriction part.

また、連結軸１８上において、ブレーキペダル１１と弾性部材２１のレバー部２３ａ，２３ｂとは、連結軸１８の軸方向に沿って所定隙間（相対移動量）ＣＬだけ相対変位可能に連結されている。   On the connecting shaft 18, the brake pedal 11 and the lever portions 23 a and 23 b of the elastic member 21 are connected so as to be relatively displaceable by a predetermined gap (relative movement amount) CL along the axial direction of the connecting shaft 18. .

弾性部材２１は、レバー部２３ａ，２３ｂにおけるブレーキペダル１１に対向する面であって、連結軸１８と凸部２５，２６との間に、４つの歪センサ（検出部）３０ａ，３０ｂ，３１ａ，３１ｂが装着されている。この歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、操作ロッド１５からの反力荷重により弾性部材２１が弾性変形するとき、その弾性変形量を検出してブレーキペダル１１の操作量として出力する。なお、図３に示すように、取付ブラケット１２の上部には、コネクタ３２が取付けられており、各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、このコネクタ３２まで配線３３がつながれている。   The elastic member 21 is a surface facing the brake pedal 11 in the lever portions 23a and 23b, and between the connecting shaft 18 and the convex portions 25 and 26, four strain sensors (detection portions) 30a, 30b, 31a, 31b is mounted. When the elastic member 21 is elastically deformed by a reaction force load from the operation rod 15, the strain sensors 30 a, 30 b, 31 a, and 31 b detect the elastic deformation amount and output it as an operation amount of the brake pedal 11. As shown in FIG. 3, a connector 32 is attached to the upper portion of the mounting bracket 12, and each strain sensor 30 a, 30 b, 31 a, 31 b is connected to a wiring 33 to the connector 32.

従って、乗員がブレーキペダル１１を踏み込むと、このブレーキペダル１１が回動軸１３を介して回動し、その操作量（操作力）が連結軸１８及びクレビス１６を介して操作ロッド１５に伝達される。このとき、ブレーキブースタ及びマスタシリンダの反力が操作ロッド１５から連結軸１８を介してレバー部２３ａ，２３ｂから弾性部材２１に入力し、この弾性部材２１が、凸部２５，２６を支点として連結軸１８側に湾曲するように弾性変形する。すると、各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、弾性部材２１が引張方向及び圧縮方向に歪むため、この歪み量（弾性変形量）をブレーキペダル１１の操作量として出力する。即ち、歪み量と弾性変形量とブレーキペダル１１の操作量は、互いに相関関係にあることから、予め設定されたマップを用いて歪み量をブレーキペダル１１の操作量に変換する。   Therefore, when the occupant steps on the brake pedal 11, the brake pedal 11 rotates through the rotation shaft 13, and the operation amount (operation force) is transmitted to the operation rod 15 through the connecting shaft 18 and the clevis 16. The At this time, the reaction force of the brake booster and the master cylinder is input from the operating rod 15 to the elastic member 21 from the lever portions 23a and 23b via the connecting shaft 18, and this elastic member 21 is connected using the convex portions 25 and 26 as fulcrums. It is elastically deformed so as to curve toward the shaft 18 side. Then, each of the strain sensors 30a, 30b, 31a, 31b outputs the amount of distortion (elastic deformation amount) as the operation amount of the brake pedal 11 because the elastic member 21 is distorted in the tension direction and the compression direction. That is, since the amount of distortion, the amount of elastic deformation, and the amount of operation of the brake pedal 11 are correlated with each other, the amount of distortion is converted into the amount of operation of the brake pedal 11 using a preset map.

また、このとき、レバー部２３ａ，２３ｂは、連結孔１１ａと連結軸１８との間の所定隙間だけ移動可能であることから、弾性部材２１は、十分に弾性変形可能であり、また、この弾性変形量が規制されることで、荷重制限機能が発揮される。   At this time, since the lever portions 23a and 23b can move by a predetermined gap between the connecting hole 11a and the connecting shaft 18, the elastic member 21 can be sufficiently elastically deformed. By limiting the amount of deformation, the load limiting function is exhibited.

このように実施例１の操作量検出装置にあっては、ブレーキペダル１１と操作ロッド１５を連結軸１８により連結し、弾性部材２１の各端部２２ａ，２２ｂを連結軸１８に対して操作ロッド１５の軸線方向に対して交差する方向に離間したブレーキペダル１１の凸部２５，２６に接触して支持し、弾性部材２１の中間部を連結軸１８及び連結孔１１ａにより相対変位可能に連結し、弾性部材２１にその弾性変形量を検出してブレーキ操作量として出力する歪センサ３０ａ，３０ｂ，３１ａ，３１ｂを設けている。   As described above, in the operation amount detection device according to the first embodiment, the brake pedal 11 and the operation rod 15 are connected by the connection shaft 18, and the end portions 22 a and 22 b of the elastic member 21 are connected to the connection shaft 18 by the operation rod. 15 is in contact with and supported by the convex portions 25 and 26 of the brake pedal 11 which are spaced apart in a direction intersecting the axial direction of the 15 axis, and the intermediate portion of the elastic member 21 is connected by the connecting shaft 18 and the connecting hole 11a so as to be relatively displaceable. The elastic member 21 is provided with strain sensors 30a, 30b, 31a, 31b that detect the amount of elastic deformation and output the amount as a brake operation amount.

従って、ブレーキペダル１１の操作反力が操作ロッド１５を介して弾性部材２１に入力すると、この弾性部材２１は、凸部２５，２６を支点として湾曲するように弾性変形し、各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、弾性部材２１の弾性変形量を引張方向及び圧縮方向の歪み量荷重として検出し、これをブレーキペダル１１の操作量として出力することができる。即ち、操作量検出ユニット２０の構造を簡素化して製造コストの低減を可能とすることができる一方で、荷重制限機能を容易に構成可能とすることができる。   Therefore, when an operation reaction force of the brake pedal 11 is input to the elastic member 21 via the operation rod 15, the elastic member 21 is elastically deformed so as to be bent with the convex portions 25 and 26 as fulcrums, and each of the strain sensors 30a, 30b, 31a, 31b can detect the amount of elastic deformation of the elastic member 21 as a strain amount load in the tension direction and the compression direction, and output this as an operation amount of the brake pedal 11. That is, the structure of the operation amount detection unit 20 can be simplified to reduce the manufacturing cost, while the load limiting function can be easily configured.

この場合、ブレーキペダル１１と弾性部材２１とは、弾性部材２１のレバー部２３ａ，２３ｂを連結軸１８によりブレーキペダル１１と連結し、各端部２２ａ，２２ｂをブレーキペダル１１の凸部２５，２６に押圧支持している。従って、ブレーキペダル１１と弾性部材２１との連結関係を簡素化することができ、低コスト化を可能とすることができる。   In this case, the brake pedal 11 and the elastic member 21 connect the lever portions 23 a and 23 b of the elastic member 21 to the brake pedal 11 by the connecting shaft 18, and connect the end portions 22 a and 22 b to the convex portions 25 and 26 of the brake pedal 11. Is supported by pressing. Therefore, the connection relationship between the brake pedal 11 and the elastic member 21 can be simplified, and the cost can be reduced.

また、実施例１の操作量検出装置では、弾性部材２１に可動子としてのレバー部２３ａ，２３ｂを一体に形成し、レバー部２３ａ，２３ｂと連結孔１１ａとを、操作ロッド１５の軸線方向に対して相対移動可能に連結し、レバー部２３ａ，２３ｂを、規制部としての連結軸１８と連結孔１１ａとにより相対移動量を規制している。従って、弾性部材２１とレバー部２３ａ，２３ｂを一体化すると共に、連結軸１８と連結孔１１ａによりレバー部２３ａ，２３ｂの相対変位量を規制することで、装置をコンパクトで低コスト化することができる。   In the operation amount detection device of the first embodiment, lever portions 23 a and 23 b as movers are formed integrally with the elastic member 21, and the lever portions 23 a and 23 b and the connection hole 11 a are arranged in the axial direction of the operation rod 15. In contrast, the lever portions 23a and 23b are connected so as to be relatively movable, and the relative movement amount of the lever portions 23a and 23b is restricted by the connecting shaft 18 and the connecting hole 11a as a restricting portion. Therefore, the elastic member 21 and the lever portions 23a and 23b are integrated, and the relative displacement amount of the lever portions 23a and 23b is regulated by the connecting shaft 18 and the connecting hole 11a, so that the device can be made compact and low in cost. it can.

また、実施例１の操作量検出装置では、ブレーキペダル１１と弾性部材２１とが近接する方向に付勢する付勢部材としてのクリップ２７を設けている。従って、クリップ２７の付勢力により弾性部材２１の各端部２２ａ，２２Ｂがブレーキペダル１１の凸部２５，２６に当接するように支持することができ、装置のガタを吸収することができると共に、各部材をセンタリングすることができる。   Further, in the operation amount detection device according to the first embodiment, a clip 27 is provided as a biasing member that biases the brake pedal 11 and the elastic member 21 in a direction in which they approach each other. Accordingly, the end portions 22a and 22B of the elastic member 21 can be supported by the urging force of the clip 27 so as to abut against the convex portions 25 and 26 of the brake pedal 11, and the backlash of the device can be absorbed. Each member can be centered.

また、実施例１の操作量検出装置では、弾性部材２１は、中間部をレバー部２３ａ，２３ｂを介して連結軸１８によりブレーキペダル１１に連結し、各端部２２ａ，２２ｂを凸部２５，２６を介してブレーキペダル１１に支持している。従って、弾性部材２１を十分な強度をもって支持することができると共に、弾性部材２１の相対変位を適正に許容し、検出精度を向上することができる。   Further, in the operation amount detection device of the first embodiment, the elastic member 21 has an intermediate portion connected to the brake pedal 11 by the connecting shaft 18 via the lever portions 23a and 23b, and the end portions 22a and 22b are connected to the convex portions 25 and 22b. 26, the brake pedal 11 is supported. Therefore, the elastic member 21 can be supported with sufficient strength, and the relative displacement of the elastic member 21 can be appropriately allowed to improve the detection accuracy.

更に、実施例１の操作量検出装置では、ブレーキペダル１１と操作ロッド１５を連結軸１８により連結し、連結軸１８に対して操作ロッド１５の軸線方向に対して交差する方向に離間したブレーキペダル１１の凸部２５，２６を形成し、弾性部材２１の中間部にレバー部２３ａ，２３ｂを形成し、連結軸１８により操作ロッド１５の軸線方向に対してブレーキペダル１１と相対移動可能に連結すると共に、弾性部材２１の各端部２２ａ，２２ｂをブレーキペダル１１の凸部２５，２６に接触支持し、弾性部材２１に弾性変形量を検出して操作量として出力する歪センサ３０ａ，３０ｂ，３１ａ，３１ｂを設けている。   Furthermore, in the operation amount detection device according to the first embodiment, the brake pedal 11 and the operation rod 15 are connected by the connecting shaft 18, and the brake pedal separated from the connection shaft 18 in a direction intersecting the axial direction of the operation rod 15. 11 convex portions 25, 26 are formed, lever portions 23 a, 23 b are formed in the intermediate portion of the elastic member 21, and the connecting shaft 18 is connected to the brake pedal 11 so as to be relatively movable with respect to the axial direction of the operating rod 15. At the same time, the end portions 22a and 22b of the elastic member 21 are contacted and supported by the convex portions 25 and 26 of the brake pedal 11, and the elastic members 21 detect the amount of elastic deformation and output it as an operation amount. , 31b.

従って、操作量検出ユニット２０としてモジュール化することができ、構造を簡素化及び製造コストの低減を可能とすることができる。   Therefore, the operation amount detection unit 20 can be modularized, and the structure can be simplified and the manufacturing cost can be reduced.

図４は、本発明の実施例２に係る操作量検出装置を表す一部を切り欠いた要部正面図である。なお、本実施例の操作量検出装置における全体構成は、上述した実施例１とほぼ同様であり、図３を用いて説明すると共に、この実施例で説明したものと同様の機能を有する部材には同一の符号を付して重複する説明は省略する。   FIG. 4 is a front view of an essential part of the manipulated variable detection device according to the second embodiment of the present invention, partly cut away. The overall configuration of the manipulated variable detection device according to the present embodiment is substantially the same as that of the above-described first embodiment, and will be described with reference to FIG. 3 and a member having the same function as that described in the present embodiment. Are denoted by the same reference numerals and redundant description is omitted.

実施例２の操作量検出装置は、図３及び図４に示すように、ブレーキペダル１１の回動動作を操作ロッド１５の直線動作に変換してマスタシリンダ及びブレーキブースタに伝達される操作量として、ブレーキペダルストローク（または、ブレーキペダル踏力）を検出するものである。そして、実施例２では、上述したブレーキペダル１１に対して、操作量検出ユニット４０が一つのモジュールとして装着可能となっている。   As shown in FIGS. 3 and 4, the operation amount detection device according to the second embodiment converts the rotation operation of the brake pedal 11 into a linear operation of the operation rod 15 and transmits the operation amount to the master cylinder and the brake booster. The brake pedal stroke (or brake pedal depression force) is detected. In the second embodiment, the operation amount detection unit 40 can be mounted as one module on the brake pedal 11 described above.

この操作量検出ユニット４０において、弾性部材４１は、金属または合成樹脂などにより製造され、所定厚さを有すると共に、ブレーキペダル１１の長手方向に沿って所定長さを有し、所定の荷重により弾性変形可能に構成されている。この弾性部材４１は、ブレーキペダル１１の前端側に、ブレーキペダル１１の長手方向に沿って延設される板形状をなす本体部４２と、この本体部４２における長手方向の中間部からブレーキペダル１１の各平面部に沿うようにほぼ直角に折曲される一対のレバー部４３ａ，４３ｂとから構成されている。   In this operation amount detection unit 40, the elastic member 41 is made of metal or synthetic resin, has a predetermined thickness, has a predetermined length along the longitudinal direction of the brake pedal 11, and is elastic by a predetermined load. It is configured to be deformable. The elastic member 41 has a plate-like main body portion 42 extending along the longitudinal direction of the brake pedal 11 on the front end side of the brake pedal 11, and the brake pedal 11 from an intermediate portion in the longitudinal direction of the main body portion 42. It is comprised from a pair of lever parts 43a and 43b bent at a substantially right angle so that each plane part may be followed.

弾性部材４１におけるレバー部４３ａ，４３ｂは、ブレーキペダル１１におけるその板厚方向の両側に所定間隔をもって位置している。そして、連結軸１８が、クレビス１６の二股部１６ａ，１６ｂとブレーキペダル１１の連結孔１１ａと共に、レバー部４３ａ，４３ｂの支持孔４４ａ，４４ｂを貫通することで、クレビス１６とブレーキペダル１１と弾性部材４１が相対的に回動自在に連結される。   The lever portions 43a and 43b in the elastic member 41 are located at both sides of the brake pedal 11 in the plate thickness direction with a predetermined interval. The connecting shaft 18 passes through the support holes 44a and 44b of the lever portions 43a and 43b together with the bifurcated portions 16a and 16b of the clevis 16 and the connecting hole 11a of the brake pedal 11, so that the clevis 16 and the brake pedal 11 are elastic. The member 41 is connected so as to be relatively rotatable.

また、弾性部材４１における本体部４２は、レバー部４３ａ，４３ｂに対して、各端部がブレーキペダル１１における長手方向の上方及び下方に延出し、湾曲部４２ａ，４２ｂが形成されている。一方、ブレーキペダル１１は、その前端側に、弾性部材４１における本体部４２の各湾曲部４２ａ，４２ｂに対向して外面が半円形状をなす凸部４５，４６が一体に形成されている。また、ブレーキペダル１１と弾性部材４１との間には、付勢部材としての樹脂製のクリップ２７が架設されており、このクリップ２７の付勢力（弾性力）により、弾性部材４１がブレーキペダル１１に接近する方向に付勢支持されている。   Further, the main body portion 42 of the elastic member 41 has respective end portions extending upward and downward in the longitudinal direction of the brake pedal 11 with respect to the lever portions 43a and 43b, and curved portions 42a and 42b are formed. On the other hand, on the front end side of the brake pedal 11, convex portions 45 and 46 are formed integrally with the curved portions 42 a and 42 b of the main body portion 42 of the elastic member 41 and the outer surfaces of which are semicircular. In addition, a resin-made clip 27 as an urging member is installed between the brake pedal 11 and the elastic member 41, and the elastic member 41 is urged by the urging force (elastic force) of the clip 27. Energized and supported in the direction of approaching.

このクリップ２７は、コ字形状をなし、ブレーキペダル１１の後端側を跨ぐように配置され、各端部に形成された係止部２７ａ，２７ｂが、弾性部材４１におけるレバー部４３ａ，４３ｂの係止孔４８ａ，４８ｂに係止している。そのため、弾性部材４１は、クリップ２７の付勢力によりブレーキペダル１１側に付勢され、本体部４２における各湾曲部４２ａ，４２ｂが、ブレーキペダル１１における各凸部４５，４６に当接（接触）して支持されている。   The clip 27 has a U-shape and is disposed so as to straddle the rear end side of the brake pedal 11, and the locking portions 27 a and 27 b formed at the respective end portions of the lever portions 43 a and 43 b in the elastic member 41. Locked in the locking holes 48a and 48b. Therefore, the elastic member 41 is urged toward the brake pedal 11 by the urging force of the clip 27, and the curved portions 42 a and 42 b in the main body 42 abut (contact) the convex portions 45 and 46 in the brake pedal 11. And is supported.

この場合、湾曲部４２ａ，４２ｂの曲率半径と凸部４５，４６の曲率半径がほぼ同様に設定されていることから、弾性部材４１は、各湾曲部４２ａ，４２ｂが、ブレーキペダル１１における各凸部４５，４６に当接するように係止することとなり、長手方向における相対移動が規制される。即ち、湾曲部４２ａ，４２ｂが、弾性部材４１とブレーキペダル１１との長手方向における相対移動を規制する拘束部として機能する。   In this case, since the curvature radii of the curved portions 42a and 42b and the curvature radii of the convex portions 45 and 46 are set to be substantially the same, the elastic member 41 has the respective curved portions 42a and 42b that are convex on the brake pedal 11. It will lock so that it may contact | abut to the parts 45 and 46, and the relative movement in a longitudinal direction is controlled. That is, the curved portions 42 a and 42 b function as a restraining portion that restricts relative movement of the elastic member 41 and the brake pedal 11 in the longitudinal direction.

なお、湾曲部４２ａ，４２ｂを、弾性部材４１とブレーキペダル１１との長手方向における相対移動を規制する拘束部として機能させるとき、その形状は、上述したものに限定されるものではない。例えば、弾性部材４１の湾曲部４２ａ，４２ｂがブレーキペダル１１の凸部４５，４６の外側に係止したが、内側に係止してもよい。また、弾性部材の端部をＬ字形状をなす拘束部としてもよい。即ち、ブレーキペダル１１における凸部に対して、弾性部材の拘束部がブレーキペダル１１の長手方向に対して交差する方向に係止すればよいものである。   When the curved portions 42a and 42b are caused to function as a restraining portion that restricts the relative movement of the elastic member 41 and the brake pedal 11 in the longitudinal direction, the shape thereof is not limited to that described above. For example, the curved portions 42a and 42b of the elastic member 41 are locked to the outside of the convex portions 45 and 46 of the brake pedal 11, but may be locked to the inside. Moreover, it is good also considering the edge part of an elastic member as a restraint part which makes L shape. In other words, the restraining portion of the elastic member may be locked to the convex portion of the brake pedal 11 in a direction intersecting the longitudinal direction of the brake pedal 11.

弾性部材４１は、レバー部４３ａ，４３ｂにおけるブレーキペダル１１に対向する面であって、連結軸１８と凸部４５，４６との間に、４つの歪センサ（検出部）３０ａ，３０ｂ，３１ａ，３１ｂが装着されている。この歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、操作ロッド１５からの反力荷重により弾性部材４１が弾性変形するとき、その弾性変形量を検出してブレーキペダル１１の操作量として出力する。   The elastic member 41 is a surface facing the brake pedal 11 in the lever portions 43a and 43b, and between the connecting shaft 18 and the convex portions 45 and 46, four strain sensors (detection portions) 30a, 30b, 31a, 31b is mounted. When the elastic member 41 is elastically deformed by a reaction force load from the operation rod 15, the strain sensors 30 a, 30 b, 31 a, and 31 b detect the elastic deformation amount and output it as an operation amount of the brake pedal 11.

従って、乗員がブレーキペダル１１を踏み込むと、このブレーキペダル１１が回動軸１３を介して回動し、その操作量（操作力）が連結軸１８及びクレビス１６を介して操作ロッド１５に伝達される。このとき、ブレーキブースタ及びマスタシリンダの反力が操作ロッド１５から連結軸１８を介してレバー部４２ａ，４２ｂから弾性部材４１に入力し、この弾性部材４１が、凸部４５，４６を支点として連結軸１８側に湾曲するように弾性変形する。すると、各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、弾性部材４１が引張方向及び圧縮方向に歪むため、この歪み量（弾性変形量）をブレーキペダル１１の操作量として出力する。即ち、歪み量と弾性変形量とブレーキペダル１１の操作量は、互いに相関関係にあることから、予め設定されたマップを用いて歪み量をブレーキペダル１１の操作量に変換する。   Therefore, when the occupant steps on the brake pedal 11, the brake pedal 11 rotates through the rotation shaft 13, and the operation amount (operation force) is transmitted to the operation rod 15 through the connecting shaft 18 and the clevis 16. The At this time, the reaction force of the brake booster and the master cylinder is input from the operating rod 15 to the elastic member 41 from the lever portions 42a and 42b via the connecting shaft 18, and this elastic member 41 is connected using the convex portions 45 and 46 as fulcrums. It is elastically deformed so as to curve toward the shaft 18 side. Then, each of the strain sensors 30a, 30b, 31a, 31b outputs the amount of distortion (elastic deformation amount) as the operation amount of the brake pedal 11 because the elastic member 41 is distorted in the tension direction and the compression direction. That is, since the amount of distortion, the amount of elastic deformation, and the amount of operation of the brake pedal 11 are correlated with each other, the amount of distortion is converted into the amount of operation of the brake pedal 11 using a preset map.

また、このとき、レバー部４３ａ，４３ｂは、連結孔１１ａと連結軸１８との間の所定隙間だけ移動可能であることから、弾性部材４１は、十分に弾性変形可能であり、また、この弾性変形量が規制されることで、荷重制限機能が発揮される。   At this time, since the lever portions 43a and 43b can move by a predetermined gap between the connecting hole 11a and the connecting shaft 18, the elastic member 41 can be sufficiently elastically deformed. By limiting the amount of deformation, the load limiting function is exhibited.

このように実施例２の操作量検出装置にあっては、ブレーキペダル１１と操作ロッド１５を連結軸１８により連結し、弾性部材４１の各湾曲部４２ａ，４２ｂを連結軸１８に対して操作ロッド１５の軸線方向に対して交差する方向に離間したブレーキペダル１１の凸部４５，４６に接触して支持し、弾性部材４１の中間部を連結軸１８及び連結孔１１ａにより相対変位可能に連結し、弾性部材４１にその弾性変形量を検出してブレーキ操作量として出力する歪センサ３０ａ，３０ｂ，３１ａ，３１ｂを設けている。   As described above, in the operation amount detection device of the second embodiment, the brake pedal 11 and the operation rod 15 are connected by the connecting shaft 18, and the curved portions 42 a and 42 b of the elastic member 41 are connected to the connecting shaft 18 by the operation rod. 15 is in contact with and supported by the convex portions 45 and 46 of the brake pedal 11 separated in a direction intersecting with the axial direction of the 15 axis, and the intermediate portion of the elastic member 41 is connected to the connecting shaft 18 and the connecting hole 11a so as to be relatively displaceable. The elastic member 41 is provided with strain sensors 30a, 30b, 31a, 31b that detect the amount of elastic deformation and output the amount as a brake operation amount.

従って、ブレーキペダル１１の操作反力が操作ロッド１５を介して弾性部材４１に入力すると、この弾性部材４１は、凸部４５，４６を支点として湾曲するように弾性変形し、各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂは、弾性部材４１の弾性変形量を引張方向及び圧縮方向の歪み量荷重として検出し、これをブレーキペダル１１の操作量として出力することができる。即ち、操作量検出ユニット４０の構造を簡素化して製造コストの低減を可能とすることができる一方で、荷重制限機能を容易に構成可能とすることができる。   Therefore, when the operation reaction force of the brake pedal 11 is input to the elastic member 41 via the operation rod 15, the elastic member 41 is elastically deformed so as to be bent with the convex portions 45 and 46 as fulcrums, and the strain sensors 30a, 30b, 31a, 31b can detect the amount of elastic deformation of the elastic member 41 as a strain amount load in the tensile direction and the compression direction, and output this as an operation amount of the brake pedal 11. That is, the structure of the operation amount detection unit 40 can be simplified to reduce the manufacturing cost, while the load limiting function can be easily configured.

また、実施例２の操作量検出装置では、弾性部材４１の端部に、ブレーキペダル１１の凸部４５，４６に係止することで、弾性部材４１とブレーキペダル１１との長手方向における相対移動を規制する拘束部としての湾曲部４２ａ，４２ｂを設けている。従って、弾性部材４１とブレーキペダル１１との位置ずれやがたつきを防止することができ、また、弾性部材４１に装着された各歪センサ３０ａ，３０ｂ，３１ａ，３１ｂと周辺部材との干渉を防止し、信頼性を向上することができる。   Further, in the operation amount detection device of the second embodiment, the elastic member 41 and the brake pedal 11 are relatively moved in the longitudinal direction by being engaged with the convex portions 45 and 46 of the brake pedal 11 at the end of the elastic member 41. Bending portions 42a and 42b are provided as restraining portions that restrict the movement. Accordingly, it is possible to prevent the displacement and backlash between the elastic member 41 and the brake pedal 11, and the interference between the strain sensors 30a, 30b, 31a, 31b mounted on the elastic member 41 and the peripheral members. And can improve reliability.

なお、この実施例２では、拘束部として、弾性部材４１の端部に、ブレーキペダル１１の凸部４５，４６に係止する湾曲部４２ａ，４２ｂを設けたが、ブレーキペダル１１側に係止部を設けて弾性部材４１側に係止するように構成してもよい。   In the second embodiment, the curved portions 42a and 42b that are engaged with the convex portions 45 and 46 of the brake pedal 11 are provided at the end of the elastic member 41 as the restraining portion. A portion may be provided and locked to the elastic member 41 side.

以上のように、本発明に係る操作量検出装置は、操作反力を受けて弾性変形する弾性部材の一方側を操作ロッドの軸線方向に対して交差する方向に離間した操作部材の凸部に支持することで、構造を簡素化して製造コストの低減を可能とする一方で荷重制限機能を構成可能とするものであり、いずれの操作量検出装置にも有用である。   As described above, the operation amount detection device according to the present invention is configured such that the one side of the elastic member that is elastically deformed by receiving the operation reaction force is formed on the convex portion of the operation member that is separated in the direction intersecting the axial direction of the operation rod. By supporting it, the structure can be simplified and the manufacturing cost can be reduced, while the load limiting function can be configured, and it is useful for any manipulated variable detection device.

１１ ブレーキペダル（操作部材）
１１ａ 連結孔（規制部）
１３ 回動軸
１５ 操作ロッド
１６ クレビス
１８ 連結軸
２０ 操作量検出ユニット
２１，４１ 弾性部材
２２，４２ 本体部
２２ａ，２２ｂ 端部
２３ａ，２３ｂ，４３ａ，４３ｂ レバー部（可動子）
２５，２６，４５，４６ 凸部
２７ クリップ （付勢部材）
３０ａ，３０ｂ，３１ａ，３１ｂ 歪センサ（検出部）
４２ａ，４２ｂ 湾曲部（拘束部） 11 Brake pedal (operating member)
11a Connecting hole (Regulator)
DESCRIPTION OF SYMBOLS 13 Rotating shaft 15 Operation rod 16 Clevis 18 Connection shaft 20 Operation amount detection unit 21, 41 Elastic member 22, 42 Main body part 22a, 22b End part 23a, 23b, 43a, 43b Lever part (movable element)
25, 26, 45, 46 Convex 27 Clip (Biasing member)
30a, 30b, 31a, 31b Strain sensor (detection unit)
42a, 42b Bent part (restraint part)

Claims (7)

操作部材の回動動作を操作ロッドの直線動作に変換して操作対象部材に伝達される操作量を検出する操作量検出装置において、
前記操作部材と前記操作ロッドを連結する連結軸と、
一方側が前記連結軸に対して前記操作ロッドの軸線方向に対して交差する方向に離間した前記操作部材の凸部に接触して支持され、他方側が前記連結軸に連結される弾性部材と、
該弾性部材の弾性変形量を検出して操作量として出力する検出部と、
を備えることを特徴とする操作量検出装置。 In the operation amount detection device that detects the operation amount transmitted to the operation target member by converting the rotation operation of the operation member into the linear operation of the operation rod,
A connecting shaft for connecting the operating member and the operating rod;
An elastic member, one side of which is supported in contact with the convex portion of the operating member spaced in a direction intersecting the axial direction of the operating rod with respect to the connecting shaft, and the other side is connected to the connecting shaft;
A detection unit that detects the amount of elastic deformation of the elastic member and outputs it as an operation amount;
An operation amount detection device comprising: 前記弾性部材は、長手方向における中間部が前記他方側として前記連結軸に連結され、長手方向における各端部が前記一方側として前記操作部材の凸部に接触して支持されることを特徴とする請求項１に記載の操作量検出装置。   The elastic member has an intermediate portion in the longitudinal direction connected to the connecting shaft as the other side, and each end portion in the longitudinal direction is supported by being in contact with the convex portion of the operating member as the one side. The operation amount detection device according to claim 1. 前記操作部材と前記弾性部材とが近接する方向に付勢する付勢部材が設けられることを特徴とする請求項１または２に記載の操作量検出装置。   The operation amount detection device according to claim 1, further comprising an urging member that urges the operation member and the elastic member toward each other. 前記弾性部材の端部または前記操作部材の凸部に、前記弾性部材と前記操作部材との長手方向における相対移動を規制する拘束部が設けられることを特徴とする請求項１から３のいずれか一つに記載の操作量検出装置。   The restraint part which controls the relative movement in the longitudinal direction of the said elastic member and the said operation member is provided in the edge part of the said elastic member, or the convex part of the said operation member, The any one of Claim 1 to 3 characterized by the above-mentioned. The operation amount detection device according to one. 前記弾性部材に可動子が固定され、該可動子は、前記連結軸と前記操作ロッドの軸線方向に対して相対移動可能に連結されることを特徴とする請求項１から４のいずれか一つに記載の操作量検出装置。   The mover is fixed to the elastic member, and the mover is connected so as to be relatively movable with respect to the axial direction of the connecting shaft and the operating rod. The operation amount detection device described in 1. 前記可動子と前記連結軸との相対移動量を規制する規制部が設けられることを特徴とする請求項５に記載の操作量検出装置。   The operation amount detection device according to claim 5, further comprising a restriction portion that restricts a relative movement amount between the mover and the connecting shaft. 前記弾性部材における前記連結軸と前記凸部との間に、前記検出部としての歪センサが設けられることを特徴とする請求項１から６のいずれか一つに記載の操作量検出装置。   The operation amount detection device according to any one of claims 1 to 6, wherein a strain sensor as the detection unit is provided between the connecting shaft and the convex portion in the elastic member.
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