JP3508585B2 - Flexible shear measurement sensor - Google Patents
Flexible shear measurement sensorInfo
- Publication number
- JP3508585B2 JP3508585B2 JP31185198A JP31185198A JP3508585B2 JP 3508585 B2 JP3508585 B2 JP 3508585B2 JP 31185198 A JP31185198 A JP 31185198A JP 31185198 A JP31185198 A JP 31185198A JP 3508585 B2 JP3508585 B2 JP 3508585B2
- Authority
- JP
- Japan
- Prior art keywords
- flexible
- measurement sensor
- shear measurement
- shear
- upper plate
- 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 - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、せん断力を計測す
るせん断センサーに関し、特に可撓性を有するせん断セ
ンサーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shear sensor for measuring shear force, and more particularly to a shear sensor having flexibility.
【０００２】[0002]
【従来の技術】従来のせん断計測センサーには、比較的
厚みがあって剛な素材（例えば鋼製）を使用した上下板
と係る上下板間に設けられたせん断センサーとからな
り、下板を計測対象に当接させ、上板にかかるせん断力
（または応力）をせん断センサーに伝達し計測するとい
ったものがあった。2. Description of the Related Art A conventional shear measurement sensor comprises upper and lower plates made of a relatively thick and rigid material (for example, steel) and a shear sensor provided between the upper and lower plates. There has been a method in which a measurement target is brought into contact with and a shearing force (or stress) applied to the upper plate is transmitted to a shearing sensor for measurement.
【０００３】また、上記の下板面上の一端にロードセル
を取付けて計測対象に固定し、そのロードセルと同じ面
内に、車輪を備えた上板を配置して、上板にかかるせん
断力により上板が下板面上を移動すると、ロードセルに
圧力が及ぼされることになり、その結果せん断力を荷重
として計測するといったものもあった。Further, a load cell is attached to one end on the lower plate surface and fixed to the object to be measured, and an upper plate equipped with wheels is arranged in the same plane as the load cell, and a shearing force applied to the upper plate is applied. When the upper plate moves on the lower plate surface, pressure is applied to the load cell, and as a result, shear force is measured as a load.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
せん断計測センサーは、上記いずれのものもそのセンサ
ーを構成する部材が比較的剛性の高いものであり、構造
的に可撓性を有するものではなく、しかも、外形も一般
に定形であった。However, in any of the conventional shear measurement sensors described above, the members constituting the sensor have relatively high rigidity, and are not structurally flexible. Moreover, the outer shape was also generally fixed.
【０００５】加えて、計測対象の場所によっては設置が
非常に難しく、たとえば、上記のロードセルを用いてせ
ん断力を計測するセンサーなどは、計測対象に構造的に
組み込んで、上板がせん断力のみを感知して移動するよ
う取付角度も勘案しながら設置を行わなければならなか
った。In addition, it is very difficult to install depending on the place to be measured. For example, a sensor for measuring the shearing force using the load cell described above is structurally incorporated into the measurement target, and the upper plate only has the shearing force. It had to be installed while considering the mounting angle so that it could move by sensing.
【０００６】また、せん断計測センサー自体は非常に高
価であり（例えば一台数十万円）、多数購入して広範に
測定を行うといったことはコスト的に困難であった。Further, the shear measuring sensor itself is very expensive (for example, one unit costs 100,000 yen), and it has been difficult to purchase a large number of sensors for wide range measurement in terms of cost.
【０００７】つまり、従来のせん断計測センサーは、可
撓性を備えることなく外形も定形である上に、購入コス
トもかさむこととなっているため、例えば、センサー設
置予定表面が曲面であったり、多くの設置数が必要であ
るといった測定対象に対しては、その外形や表面状態ま
たコスト的な面により適切な位置に十分な数のセンサー
設置を実施することは困難であることが多かった。In other words, the conventional shear measurement sensor has no flexibility and has a regular outer shape, and also increases the purchase cost. For example, the surface where the sensor is to be installed is a curved surface, It has been often difficult to install a sufficient number of sensors at appropriate positions for the measurement target, which requires a large number of installations, due to its outer shape, surface condition, and cost.
【０００８】そこで、本発明は、このような従来の課題
に着目してなされたもので、計測対象の構造や表面状態
によらず適切な測定位置に簡便に設置可能であり、しか
も設置コスト低減を図ることが可能であるせん断計測セ
ンサーを提供するものである。Therefore, the present invention has been made by paying attention to such a conventional problem, and can be easily installed at an appropriate measurement position regardless of the structure or surface condition of the object to be measured, and the installation cost can be reduced. The present invention provides a shear measurement sensor capable of achieving the above.
【０００９】[0009]
【課題を解決するための手段】この発明は、上記目的を
達成するためになされたもので、計測対象となる物体表
面に当接される下板と、この下板と略平行を保ちつつ、
前記物体表面に作用するせん断力を受ける上板とが、せ
ん断方向に相対移動可能に一体化され、前記上下板間に
内設されるひずみゲージが、せん断力を検知する検知端
部の一端を前記上板に、他端を前記下板に連結されたせ
ん断計測センサーであって、前記上板と下板とが可撓性
を有することを特徴とする。The present invention has been made in order to achieve the above-mentioned object, and a lower plate contacting the surface of an object to be measured and the lower plate are kept substantially parallel to each other.
An upper plate that receives a shearing force acting on the object surface is integrated so as to be relatively movable in the shearing direction, and a strain gauge provided between the upper and lower plates is one end of a detection end portion that detects the shearing force. A shear measuring sensor in which the other end of the upper plate is connected to the lower plate, wherein the upper plate and the lower plate are flexible.
【００１０】また、前記上下板間に、可撓性を有する間
詰め材が備えられていると好適であり、係る間詰め材に
形成された空所に前記ひずみゲージが内設されていても
よい。Further, it is preferable that a flexible padding material is provided between the upper and lower plates, and even if the strain gauge is provided in a space formed in the padding material. Good.
【００１１】さらに、前記間詰め材と前記上板との間
に、可撓性を有する滑り材が挟持されるとより好適であ
る。Further, it is more preferable that a slip material having flexibility is sandwiched between the padding material and the upper plate.
【００１２】上記に加えて、外部から前記上下板間への
異物侵入を阻止するため、前記フレキシブルせん断計測
センサーの外周に、コーティングを施すとよい。In addition to the above, a coating may be applied to the outer periphery of the flexible shear measuring sensor in order to prevent foreign matter from entering between the upper and lower plates from the outside.
【００１３】[0013]
【発明の実施の形態】以下、本発明の好ましい実施の形
態につき、添付図面を参照して詳細に説明する。Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
【００１４】図１は、本発明のフレキシブルせん断計測
センサー１０を示す分解斜視図であり、図２は、外部か
らの異物侵入を阻止するため、本発明のフレキシブルせ
ん断計測センサー上下板間の外周にコーティングを施し
た状態を示す説明図である。FIG. 1 is an exploded perspective view showing a flexible shear measuring sensor 10 of the present invention, and FIG. 2 shows the outer circumference between the upper and lower plates of the flexible shear measuring sensor of the present invention in order to prevent foreign matter from entering from the outside. It is explanatory drawing which shows the state which applied the coating.
【００１５】本発明のフレキシブルせん断計測センサー
１０は、図１に示すように、例えば上から、アルミ製上
板１１（他に例えば銅板、リン青銅板など）、滑り材１
２（例えばテフロンシート）、間詰め材１３（例えば硬
質ゴム）、間詰め材空所１３ａに内設されるひずみゲー
ジ１４、そして例えば上板１１と同様なアルミ製下板１
５といった層構造をなしている。As shown in FIG. 1, the flexible shear measuring sensor 10 of the present invention comprises, for example, an aluminum upper plate 11 (others such as a copper plate and a phosphor bronze plate) and a sliding member 1 from above.
2 (for example, Teflon sheet), padding material 13 (for example, hard rubber), strain gauge 14 installed in padding material space 13a, and aluminum lower plate 1 similar to upper plate 11, for example.
It has a layered structure such as 5.
【００１６】さらに図２（ａ）、（ｂ）のごとく、上下
板間の端面には、例えば軟質ゴムによるコーティング１
６が施され、周囲からの土粒子や水が、上下板間内部に
侵入しないよう措置がなされるものとする。Further, as shown in FIGS. 2A and 2B, the end face between the upper and lower plates is coated with, for example, soft rubber 1
No. 6 shall be applied, and measures shall be taken to prevent soil particles and water from the surroundings from entering the inside between the upper and lower plates.
【００１７】ここで上記の間詰め材１３は、外部からの
力に対して、内設するひずみゲージ１４を保護可能な厚
みと強度とを備えるものとする。Here, the padding material 13 has a thickness and strength capable of protecting the strain gauge 14 provided therein against external force.
【００１８】また、滑り材１２は、上記間詰め材１３と
上板１１との間に挟持されており、上板１１に作用する
せん断力に応じて間詰め材１３上を上板１１がスムーズ
に滑動可能ならしめるものであり、テフロンシートなど
の、厚みは薄くとも適度な強度を備えつつ十分な滑動性
能を有する素材が好ましい。The sliding member 12 is sandwiched between the padding member 13 and the upper plate 11, and the upper plate 11 is smoothly moved over the padding member 13 in accordance with the shearing force acting on the upper plate 11. A material such as a Teflon sheet, which has a small thickness and has a sufficient sliding performance, while having a proper strength is preferable.
【００１９】さらに、上下板間に内設されるひずみゲー
ジ１４は、例えば、軸力のみを精度良く検出するクロス
ゲージを採用すると好適である。Further, as the strain gauge 14 provided between the upper and lower plates, for example, a cross gauge for accurately detecting only the axial force is preferably adopted.
【００２０】本発明のフレキシブルせん断計測センサー
１０は、上板１１、下板１５、間詰め材１３、及び滑り
材１２がそれぞれ可撓性を備えているため、計測対象の
表面が例えば曲面であろうとも設置可能であるが、それ
ぞれの部材の厚みや素材を適宜変更することで、センサ
ー全体の剛性を向上させて従来のセンサー同様、剛な構
造を備えるものに変更して使用するといったことも任意
に選択可能である。In the flexible shear measuring sensor 10 of the present invention, since the upper plate 11, the lower plate 15, the filling material 13, and the sliding material 12 are respectively flexible, the surface to be measured is, for example, a curved surface. Although it can be installed by brazing, by appropriately changing the thickness and material of each member, the rigidity of the entire sensor can be improved and it can be used by changing it to one with a rigid structure like the conventional sensor. It can be arbitrarily selected.
【００２１】図３は、図２（ｂ）のＡ−Ａ線に沿った本
発明のフレキシブルせん断計測センサー１０の断面図で
ある。FIG. 3 is a cross-sectional view of the flexible shear measuring sensor 10 of the present invention taken along the line AA of FIG. 2 (b).
【００２２】この図では、上下板間には滑り材１２を介
して間詰め材１３が配されており、その間詰め材１３に
は空所１３ａが設けられ、ひずみゲージ１４の検知端部
１４ａが上下板を結ぶように接合されて内設されている
様子が示されている。この際、ひずみゲージが検出する
せん断力Ｓは、例えば紙面上左から右の方向を示すもの
とする。In this figure, a padding material 13 is arranged between the upper and lower plates with a sliding material 12 interposed therebetween. A space 13a is provided in the padding material 13 and a sensing end 14a of a strain gauge 14 is provided. It is shown that the upper and lower plates are joined so as to be tied together and installed internally. At this time, the shear force S detected by the strain gauge indicates, for example, the direction from left to right on the paper surface.
【００２３】また、図のように滑り材１２にも間詰め材
１３の空所１３ａと合わせて空所１２ａが設けられもの
とする。Further, as shown in the figure, it is assumed that the sliding member 12 is provided with a space 12a together with the space 13a of the filling material 13.
【００２４】係るひずみゲージ１４の内設パターンＰと
しては、図４（ａ）に示すように２次元２方向である場
合や、同図（ｂ）に示すように２次元４方向である場合
などが考えられ、それ以外にも、例えば３次元配置とし
たり、矩形だけでなく円形に配置したりと測定対象や目
的に応じて様々なパターンを採用することが可能であ
る。The internal pattern P of the strain gauge 14 is two-dimensional two-direction as shown in FIG. 4 (a), or two-dimensional four-direction as shown in FIG. 4 (b). Other than that, various patterns such as three-dimensional arrangement and arrangement of not only rectangle but also circle can be adopted depending on the measurement object and purpose.
【００２５】図５には、本発明のフレキシブルせん断計
測センサー１０を曲面を有する台座Ｍ上に設置した状況
を示しており、さらにその台座Ｍごと傾きを与えること
で台座Ｍ表面の載置物Ｌの移動が生じて、その移動に由
来するせん断力Ｓが発生している様子も表している。FIG. 5 shows a situation in which the flexible shear measuring sensor 10 of the present invention is installed on a pedestal M having a curved surface, and by tilting the pedestal M, the object L placed on the surface of the pedestal M is shown. It also shows that the movement occurs and the shearing force S resulting from the movement is generated.
【００２６】この台座Ｍを徐々に紙面上時計方向に傾け
ることで、台座Ｍ上の載置物Ｌ（例えば土砂など）は下
方に向け移動を始め、台座Ｍの傾きが増大するとともに
その移動量も大きくなる。By gradually inclining the pedestal M clockwise in the plane of the drawing, the object L (for example, earth and sand) on the pedestal M starts to move downward, the inclination of the pedestal M increases, and the amount of movement thereof increases. growing.
【００２７】移動量の増大に伴い、台座Ｍ表面に働くせ
ん断力Ｓも増大し、設置されたフレキシブルせん断計測
センサー１０の上板１１も係るせん断力Ｓを受けること
となる。As the amount of movement increases, the shearing force S acting on the surface of the pedestal M also increases, and the upper plate 11 of the installed flexible shearing measurement sensor 10 also receives the shearing force S.
【００２８】その結果得られたせん断力Ｓと台座Ｍの傾
斜角度の関係を図６に示す。FIG. 6 shows the relationship between the shearing force S and the inclination angle of the pedestal M obtained as a result.
【００２９】載置物をＮｏ．１〜５まで５種類変化させ
ており、その性質の違いによりグラフ形状は異なるが、
いずれも傾斜角度の増大に応じたせん断力の増減を忠実
に計測したことを表している。The mount is No. 5 types are changed from 1 to 5, and the graph shape is different due to the difference in their properties,
All of them show that the increase / decrease in the shear force according to the increase in the inclination angle was faithfully measured.
【００３０】なお、本実施例では、ひずみゲージ１４と
してクロスゲージを示したが、それに限らず、同様の性
能を備えるものであればいずれも採用することが出来
る。In this embodiment, the cross gauge is shown as the strain gauge 14, but the strain gauge 14 is not limited to this, and any strain gauge having the same performance can be adopted.
【００３１】また、上板１１、滑り材１２、間詰め材１
３、及び下板１５の厚みと素材は、センサー全体に求め
る剛性（または可撓性）や、せん断力の大きさに応じて
適宜設定可能である。Further, the upper plate 11, the sliding material 12, the filling material 1
3, the thickness and material of the lower plate 15 can be appropriately set according to the rigidity (or flexibility) required for the entire sensor and the magnitude of the shearing force.
【００３２】[0032]
【発明の効果】以上詳細に説明したように、本発明のフ
レキシブルせん断計測センサーによれば、その上下板
（もしくはそれに加えて間詰め材及び滑り材）の板厚や
素材を適宜選択することで可撓性と剛性の程度を自在に
変更可能で、計測対象の構造や曲面か平面かといった表
面状態によらず適切な測定位置に簡便に設置することが
可能となるのである。As described in detail above, according to the flexible shear measuring sensor of the present invention, the plate thickness and material of the upper and lower plates (or in addition thereto, the filling material and the sliding material) can be appropriately selected. It is possible to freely change the degree of flexibility and rigidity, and it is possible to easily install the device at an appropriate measurement position regardless of the structure of the measurement target or the surface condition such as curved surface or flat surface.
【００３３】しかも従来のせん断計測センサーが一台当
たり数十万円程度の購入費用を要していたの比べ、本発
明のフレキシブルせん断計測センサーは一台当たり数万
円程度でしかなく、設置コストの大幅な低減を図ること
ができる。Moreover, the conventional shear measurement sensor required a purchase cost of several hundreds of thousands of yen per unit, whereas the flexible shear measurement sensor of the present invention costs only several tens of thousands of yen per unit, and the installation cost. Can be significantly reduced.
【００３４】したがって、センサー設置予定表面が曲面
であったり、多くの設置数が必要であるといった測定対
象に対しても適切な位置に十分な数のセンサー設置を実
施することが出来る。Therefore, it is possible to install a sufficient number of sensors at appropriate positions even for a measurement target such as a curved surface on which the sensor is to be installed or a large number of installations are required.
【図１】本発明のフレキシブルせん断計測センサーを示
す分解斜視図である。FIG. 1 is an exploded perspective view showing a flexible shear measurement sensor of the present invention.
【図２】外部からの異物侵入を阻止するため、本発明の
フレキシブルせん断計測センサー上下板間の外周にコー
ティングを施した状態を示す説明図である。FIG. 2 is an explanatory view showing a state in which a coating is applied to the outer circumference between the upper and lower plates of the flexible shear measurement sensor of the present invention in order to prevent foreign matter from entering from the outside.
【図３】図２（ｂ）のＡ−Ａ線に沿った本発明のフレキ
シブルせん断計測センサーの断面図である。FIG. 3 is a cross-sectional view of the flexible shear measurement sensor of the present invention taken along the line AA of FIG. 2 (b).
【図４】（ａ）、（ｂ）は、本発明のフレキシブルせん
断計測センサーの上下板間に内設されるひずみゲージの
内設パターンを示す平面図である。4A and 4B are plan views showing an internal pattern of a strain gauge internally provided between upper and lower plates of the flexible shear measurement sensor of the present invention.
【図５】本発明のフレキシブルせん断計測センサー曲面
を有する台座上に設置した状態を示す説明図である。FIG. 5 is an explanatory diagram showing a state where the flexible shear measuring sensor of the present invention is installed on a pedestal having a curved surface.
【図６】本発明のフレキシブルせん断計測センサーを、
曲面を有する台座上に設置し、係る台座を徐々に傾けて
求めたせん断力と台座の傾斜角度との関係を示すグラフ
である。FIG. 6 shows a flexible shear measurement sensor of the present invention,
It is a graph which shows the relationship between the shearing force which was installed on a pedestal having a curved surface and was gradually tilted, and the inclination angle of the pedestal.
Ｓ せん断力 １０ フレキシブルせん断計測センサー １１ 上板 １２ 滑り材 １３ 間詰め材 １４ ひずみゲージ １４ａ 検知端部 １５ 下板 S shear force 10 Flexible shear measurement sensor 11 Upper plate 12 sliding materials 13 Padding material 14 strain gauge 14a Detection end 15 Lower plate
Claims (5)
板と、この下板と略平行を保ちつつ、前記物体表面に作
用するせん断力を受ける上板とが、せん断方向に相対移
動可能に一体化され、前記上下板間に内設されるひずみ
ゲージが、せん断力を検知する検知端部の一端を前記上
板に、他端を前記下板に連結されたせん断計測センサー
であって、前記上板と下板とが可撓性を有することを特
徴とするフレキシブルせん断計測センサー。1. A lower plate that is in contact with the surface of an object to be measured and an upper plate that receives a shearing force acting on the surface of the object while being substantially parallel to the lower plate are relatively moved in the shearing direction. A strain gauge that is integrated as much as possible and is installed between the upper and lower plates is a shear measurement sensor in which one end of a detection end portion that detects a shear force is connected to the upper plate and the other end is connected to the lower plate. The flexible shear measurement sensor is characterized in that the upper plate and the lower plate have flexibility.
材が備えられていることを特徴とする請求項１に記載の
フレキシブルせん断計測センサー。2. The flexible shear measurement sensor according to claim 1, further comprising a flexible packing material provided between the upper and lower plates.
ずみゲージが内設されていることを特徴とする請求項２
に記載のフレキシブルせん断計測センサー。3. The strain gauge is internally provided in a void formed in the filling material.
Flexible shear measurement sensor described in.
性を有する滑り材が挟持されることを特徴とする請求項
２または３に記載のフレキシブルせん断計測センサー。4. The flexible shear measurement sensor according to claim 2, wherein a flexible sliding material is sandwiched between the padding material and the upper plate.
外周に、外部から前記上下板間への異物侵入を阻止する
コーティングを施したことを特徴とする請求項１〜４の
いずれかに記載のフレキシブルせん断計測センサー。5. The flexible shear measurement according to any one of claims 1 to 4, wherein the outer circumference of the flexible shear measurement sensor is coated with a coating that prevents foreign matter from entering between the upper and lower plates from the outside. sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31185198A JP3508585B2 (en) | 1998-11-02 | 1998-11-02 | Flexible shear measurement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31185198A JP3508585B2 (en) | 1998-11-02 | 1998-11-02 | Flexible shear measurement sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000136970A JP2000136970A (en) | 2000-05-16 |
| JP3508585B2 true JP3508585B2 (en) | 2004-03-22 |
Family
ID=18022187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31185198A Expired - Fee Related JP3508585B2 (en) | 1998-11-02 | 1998-11-02 | Flexible shear measurement sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3508585B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758559A (en) * | 2016-04-08 | 2016-07-13 | 干飞 | Shear stress testing device and method |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4700180B2 (en) * | 2000-09-26 | 2011-06-15 | 株式会社モルテン | Deviation force measuring device |
| US6776049B2 (en) | 2001-12-07 | 2004-08-17 | Alliant Techsystems Inc. | System and method for measuring stress at an interface |
| JP5408687B2 (en) * | 2008-03-17 | 2014-02-05 | 国立大学法人広島大学 | Shear stress sensor and distributed shear stress sensor |
| CN101819075B (en) * | 2010-04-26 | 2012-07-25 | 清华大学 | One-way support shearing force measuring device and method |
| KR101361210B1 (en) | 2012-06-05 | 2014-02-10 | 연세대학교 원주산학협력단 | Measuring apparatus for shearing force for seating |
| KR101657894B1 (en) * | 2015-05-04 | 2016-09-21 | 연세대학교 원주산학협력단 | Measuring sensor and device for shearing force |
| CN111256884B (en) * | 2020-02-25 | 2020-10-23 | 清华大学 | Flexible sensor capable of identifying pressure and shear force |
-
1998
- 1998-11-02 JP JP31185198A patent/JP3508585B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758559A (en) * | 2016-04-08 | 2016-07-13 | 干飞 | Shear stress testing device and method |
| CN105758559B (en) * | 2016-04-08 | 2019-06-25 | 干飞 | A kind of shear stress test device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000136970A (en) | 2000-05-16 |
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