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JP2014109438A - Strain body, load cell and weighing apparatus - Google Patents

Strain body, load cell and weighing apparatus Download PDF

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JP2014109438A
JP2014109438A JP2012262315A JP2012262315A JP2014109438A JP 2014109438 A JP2014109438 A JP 2014109438A JP 2012262315 A JP2012262315 A JP 2012262315A JP 2012262315 A JP2012262315 A JP 2012262315A JP 2014109438 A JP2014109438 A JP 2014109438A
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load
strain
weighed
supporting
load cell
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Masashi Uchibori
賢史 内堀
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Minebea Co Ltd
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Minebea Co Ltd
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Priority to JP2012262315A priority Critical patent/JP2014109438A/en
Priority to CN201320735038.4U priority patent/CN203595545U/en
Priority to DE201310113173 priority patent/DE102013113173A1/en
Publication of JP2014109438A publication Critical patent/JP2014109438A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
    • G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
    • G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
    • G01G3/1402—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Force In General (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

【課題】低コストであり、かつ、小型化、薄型化を実現した起歪体、ロードセル及び計量装置を提供する。
【解決手段】 被計量物の荷重を測定するための薄い平板状の起歪体２は、被計量物を載置する計量物受け皿を支持する一対の荷重受け部４ａ、４ｂと、一対の荷重受け部４ａ、４ｂを挟んだ位置に配置され、被計量物の荷重を受けることによりひずむ起歪部５と、荷重受け部４ａ、４ｂの外側に配置され、荷重を支持する荷重支持部６ａ、６ｂを有し、起歪部５は、その両端が固定された梁からなり、荷重受け部４ａ、４ｂと起歪部５と荷重支持部６ａ、６ｂとが一体的に形成されている。
【選択図】 図１Disclosed is a strain generating body, a load cell, and a weighing device that are low in cost and are small and thin.
SOLUTION: A thin flat plate-like strain generating body 2 for measuring a load of an object to be weighed includes a pair of load receiving portions 4a and 4b for supporting a weighing object tray on which the object to be weighed is placed, and a pair of loads. A strain-inducing portion 5 which is arranged at a position sandwiching the receiving portions 4a and 4b and is distorted by receiving a load of an object to be weighed; a load supporting portion 6a which is arranged outside the load receiving portions 4a and 4b and supports the load; The strain generating part 5 is made of a beam having both ends fixed, and the load receiving parts 4a and 4b, the strain generating part 5 and the load supporting parts 6a and 6b are integrally formed.
[Selection] Figure 1

Description

本発明は、被計量物の荷重を測定するための平板状の起歪体、ロードセル、及び計量装置に関する。   The present invention relates to a flat plate-shaped strain body, a load cell, and a weighing device for measuring a load of an object to be weighed.

従来から、被計量物の荷重を測定するための起歪体に関して様々な構造が提案されている。このような起歪体を有する秤などの計量装置においては、装置の小型化、薄型化に好適なロードセルが種々提案されている（例えば、特許文献１）。   Conventionally, various structures have been proposed for a strain generating body for measuring the load of an object to be weighed. In a weighing device such as a scale having such a strain generating body, various load cells suitable for reducing the size and thickness of the device have been proposed (for example, Patent Document 1).

特表平１０−５００４８４号公報Japanese National Patent Publication No. 10-500484

近年、秤などの計量装置において、小型化も去ることながら薄型化への需要者要求が目覚ましく、これら小型化や薄型化の要求が産業界からますます強く提起されてきている。
そこで、被計量物の荷重を測定するロードセルや、このロードセルを構成する起歪体（エレメント）に関しても、さらなる小型化や薄型化に応える必要が生じた。
このような背景から、薄い平板状の板状部材からなる起歪体が用いられることがある。なお、最近では装置の小型化や薄型化のみならず、高精度化の要望も強く、今後ますます、その傾向が強くなることが見込まれる。 In recent years, there has been a remarkable demand for thinning a weighing device such as a scale while leaving it downsized, and the demand for downsizing and thinning has been strongly raised by the industry.
Therefore, it is necessary to respond to further downsizing and thinning of the load cell for measuring the load of the object to be measured and the strain generating element (element) constituting the load cell.
From such a background, a strain body made of a thin flat plate member may be used. Recently, there is a strong demand not only for downsizing and thinning of the apparatus but also for high precision, and this tendency is expected to become stronger in the future.

しかしながら、一般的に、従来のロードセルは、起歪体の幅方向の中心付近の位置に荷重が集中し、幅方向の中心から両側に離れた位置でひずみゲージにより電気抵抗値を検出する構成であることから、被計量物の載置場所によっては、起歪体の梁にねじりなどの偏荷重が生じ測定誤差が生じ易いという問題点が指摘されていた。また、このような偏荷重に伴い、経時的なボルトの緩みなどによる装置の損傷も懸念される。   However, in general, a conventional load cell has a configuration in which a load concentrates at a position near the center in the width direction of the strain generating body, and an electrical resistance value is detected by a strain gauge at positions away from both sides from the center in the width direction. Therefore, it has been pointed out that depending on the place where the object to be weighed is placed, an uneven load such as torsion is generated on the beam of the strain-generating body and a measurement error is likely to occur. In addition, with such an unbalanced load, there is a concern about damage to the device due to the loosening of the bolt over time.

本発明は、上記課題に鑑みてなされたものであり、偏荷重を低減し、かつ、低コスト、小型化、薄型化を実現した起歪体、ロードセル及び計量装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a strain generating body, a load cell, and a weighing device that can reduce uneven load and realize low cost, downsizing, and thinning. .

上記課題を解決するために、本発明の起歪体は、被計量物の荷重を測定するための薄い平板状の起歪体であって、前記被計量物を載置する計量物受け皿を支持する一対の荷重受け部と、前記一対の荷重受け部を挟んだ位置に配置され、前記被計量物の前記荷重を受けることによりひずむ起歪部と、前記荷重受け部の外側に配置され、荷重を支持する荷重支持部を有し、前記起歪部は、その両端が固定された梁からなり、前記荷重受け部と前記起歪部と前記荷重支持部とが一体的に形成されている。   In order to solve the above-mentioned problems, the strain body of the present invention is a thin flat plate strain body for measuring the load of the object to be weighed, and supports a weighing object tray on which the object to be weighed is placed. A pair of load receiving portions, a strain-inducing portion that is distorted by receiving the load of the object to be weighed, and a load receiving portion disposed outside the load receiving portion. The strain-generating portion is made of a beam having both ends fixed, and the load receiving portion, the strain-generating portion, and the load support portion are integrally formed.

上記発明において、前記荷重受け部は、その一端が固定され他端が自由である梁からなる。
本発明のロードセルは、上記起歪体を備え、前記起歪部および前記荷重支持部のうち少なくともいずれか一方にひずみ検出素子を貼着する。
上記発明において、前記荷重支持部は、前記ひずみ検出素子のひずみ受感部に対応する位置の近傍領域を他の部分に対して薄く形成する。 In the above invention, the load receiving portion is made of a beam having one end fixed and the other end free.
The load cell of the present invention includes the strain generating body, and a strain detecting element is attached to at least one of the strain generating portion and the load supporting portion.
In the above-described invention, the load supporting portion forms a region near the position corresponding to the strain sensing portion of the strain detecting element thinner than other portions.

本発明の計量装置は、上記ロードセルを１個以上備え、前記ロードセルに貼着されているひずみ検出素子からの検出信号に基づいて、前記被計量物の荷重を測定する。   The weighing apparatus according to the present invention includes one or more load cells, and measures the load of the object to be measured based on a detection signal from a strain detection element attached to the load cell.

本発明によれば、偏荷重を低減し、かつ、低コスト、小型化、薄型化を実現した起歪体、ロードセル及び計量装置を提供することができる。   According to the present invention, it is possible to provide a strain generating body, a load cell, and a weighing device that can reduce the uneven load and realize low cost, downsizing, and thinning.

本発明に係るロードセルの実施形態を示す概略図である。It is the schematic which shows embodiment of the load cell which concerns on this invention. 温度補償ゲージを設けたロードセルのホイートストンブリッジ回路の一例を示す図である。It is a figure which shows an example of the Wheatstone bridge circuit of the load cell provided with the temperature compensation gauge. 本発明に係るロードセルを搭載した計量装置の一例を示す平面図である。It is a top view which shows an example of the weighing device carrying the load cell which concerns on this invention.

以下、本発明の実施形態について図面を参照して説明する。
図１は、本発明に係るロードセルの実施形態を示す概略図、（ａ）はロードセルの上面図、（ｂ）下面図、（ｃ）Ａ−Ａ線断面図、（ｄ）正面図である。図１を参照しながら、本発明に係るロードセル１の構成を説明する。
ロードセル１の起歪体２は、ほぼ正方形の薄い平板状の板状部材であり、この板状部材（金属板など）には、ジグザグに伸びる一対のスリット３ａ、３ｂが形成されている。これにより、一対のスリット３ａ、３ｂ間の部分が荷重受け部４ａ、４ｂおよび起歪部５を構成し、荷重を受けたときに荷重方向が大きく撓むように長方形の梁形状に形成されている。
そして、これら一対のスリット３ａ、３ｂの両側には、一対の荷重支持部６ａ、６ｂが形成されている。このようにして、起歪部５と荷重受け部４ａ、４ｂと荷重支持部６ａ、６ｂが、一体的に形成された構成となっている。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic view showing an embodiment of a load cell according to the present invention, (a) is a top view of the load cell, (b) a bottom view, (c) a cross-sectional view along line AA, and (d) a front view. The configuration of the load cell 1 according to the present invention will be described with reference to FIG.
The strain body 2 of the load cell 1 is a thin plate-like plate member having a substantially square shape, and a pair of slits 3a and 3b extending zigzag are formed on the plate-like member (metal plate or the like). Thereby, the part between a pair of slit 3a, 3b comprises load receiving part 4a, 4b and the strain generation part 5, and when it receives a load, it is formed in the rectangular beam shape so that a load direction may be greatly bent.
A pair of load support portions 6a and 6b are formed on both sides of the pair of slits 3a and 3b. In this way, the strain generating portion 5, the load receiving portions 4a and 4b, and the load supporting portions 6a and 6b are integrally formed.

また、本実施形態に係るロードセル１の起歪体２は、中心線Ｃに対して対称となるように構成されている。
梁形状の起歪部５の一端寄りと他端寄りの上面と下面の同位置にそれぞれ１個ずつひずみゲージ（ひずみ検出素子）７ａ、７ｂ、７ｃ、７ｄが貼着されており、荷重受け部４ａ、４ｂには、計量物受け皿を固定する固定穴８ａ、８ｂ、８ｃ、８ｄが中心線に対して対称位置に４箇所形成されている。また、荷重受け部４ａ、４ｂと荷重支持部６ａ、６ｂの間には、ロードセル１に固定する固定穴を有する一対の固定部９ａ、９ｂ、９ｃ、９ｄが形成されている。さらに、荷重支持部６ａ、６ｂには、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄのひずみ受感部に対応する位置に凹状の窪み部１０ａ、１０ｂが形成されており、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄがひずみを検出し易い形状にしている。
なお、ひずみゲージの貼着場所や位置はこれに限定されない。例えば、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄは、さらに荷重支持部６ａ、６ｂにも設けても良いし、荷重支持部６ａ、６ｂだけに設けても良い。また、必ずしも、ひずみゲージを、起歪部５や荷重支持部６ａ、６ｂなどの一端寄りと他端寄りに貼着しなくても良い。例えば、梁の中央近傍に貼着しても良い。 Further, the strain body 2 of the load cell 1 according to the present embodiment is configured to be symmetric with respect to the center line C.
Strain gauges (strain detecting elements) 7a, 7b, 7c, 7d are attached to the upper and lower surfaces of the beam-shaped strained portion 5 near one end and the other end, respectively. In 4a and 4b, four fixing holes 8a, 8b, 8c and 8d for fixing the weighing object tray are formed at symmetrical positions with respect to the center line. A pair of fixing portions 9a, 9b, 9c, 9d having fixing holes for fixing to the load cell 1 are formed between the load receiving portions 4a, 4b and the load supporting portions 6a, 6b. Further, the load supporting portions 6a and 6b are provided with concave depressions 10a and 10b at positions corresponding to the strain sensing portions of the strain gauges 7a, 7b, 7c and 7d, and the strain gauges 7a, 7b and 7c. 7d has a shape in which distortion can be easily detected.
Note that the location and position of the strain gauge are not limited to this. For example, the strain gauges 7a, 7b, 7c, and 7d may be further provided in the load support portions 6a and 6b, or may be provided only in the load support portions 6a and 6b. In addition, the strain gauge does not necessarily have to be attached to one end and the other end of the strain generating portion 5 and the load support portions 6a and 6b. For example, you may stick on the center vicinity of a beam.

本実施形態に係るロードセル１によれば、一対の荷重受け部４ａ、４ｂに荷重が作用すると、一端が自由の梁であるため、他端を支点として下方に撓む。このとき、荷重受け部４ａ、４ｂと荷重支持部６ａ、６ｂと起歪部５は一体形成されているため、荷重受け部４ａ、４ｂの撓みに応じて起歪部５と荷重支持部６ａ、６ｂが下方に撓むことになる。なお、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄの温度による出力変化の影響を低減するため、起歪体２上面のひずみゲージ７ａ、７ｂ、７ｃ、７ｄを貼着した位置の中心線上に温度補償ゲージ１１が設けられている。ただし、温度補償ゲージ１１の配置位置は、これに限定されない。   According to the load cell 1 according to the present embodiment, when a load is applied to the pair of load receiving portions 4a and 4b, one end is a free beam, so that the other end is bent downward as a fulcrum. At this time, since the load receiving portions 4a and 4b, the load supporting portions 6a and 6b, and the strain generating portion 5 are integrally formed, the strain generating portion 5 and the load supporting portion 6a, according to the deflection of the load receiving portions 4a and 4b, 6b will bend downward. In order to reduce the influence of the output change due to the temperature of the strain gauges 7a, 7b, 7c, 7d, a temperature compensation gauge is provided on the center line of the position where the strain gauges 7a, 7b, 7c, 7d on the upper surface of the strain generating body 2 are attached. 11 is provided. However, the arrangement position of the temperature compensation gauge 11 is not limited to this.

温度補償ゲージ１１を設けたロードセルのホイートストンブリッジ回路の一例を図２に示す。温度補償ゲージ１１を設けることで、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄの温度による出力変化の影響を低減することができる。
また、ひずみゲージ７ａ、７ｂ、７ｃ、７ｄが起歪部５のひずみを検知し易いように、起歪部５を構成する梁は、起歪体２の厚みに比べて、全体的に又は少なくともひずみゲージ７ａ、７ｂ、７ｃ、７ｄが貼着される部分において板厚が薄く形成されている。
以上のような構成により、起歪部５と一対の荷重支持部６ａ、６ｂによる３本の梁により、被計量物の荷重を受け、この荷重によるひずみをひずみゲージ７ａ、７ｂ、７ｃ、７ｄが検出し、ひずみの検出値から被計量物の荷重を演算する。これが秤などの計量装置の表示部（不図示）に表示されることになる。 An example of a Wheatstone bridge circuit of a load cell provided with a temperature compensation gauge 11 is shown in FIG. By providing the temperature compensation gauge 11, it is possible to reduce the influence of the output change due to the temperature of the strain gauges 7a, 7b, 7c, 7d.
In addition, the beams constituting the strain-generating portion 5 are entirely or at least compared to the thickness of the strain-generating body 2 so that the strain gauges 7a, 7b, 7c, 7d can easily detect the strain of the strain-generating portion 5. The plate thickness is thin at the portion where the strain gauges 7a, 7b, 7c, 7d are attached.
With the configuration as described above, the load of the object to be measured is received by the three beams of the strain generating portion 5 and the pair of load support portions 6a and 6b, and the strain gauges 7a, 7b, 7c and 7d receive the strain caused by this load. Detect and calculate the load of the object to be measured from the detected strain value. This is displayed on a display unit (not shown) of a weighing device such as a scale.

図３は、本発明に係るロードセル１を搭載した計量装置の一例を示す平面図である。図３を参照しながら、本発明に係るロードセルを搭載した計量装置２０の構造を説明する。
秤などの計量装置の場合、一般的に、直方体形状の筐体部２１と、その４隅に設けられる脚部２２ａ、２２ｂ、２２ｃ、２２ｄとから構成され、４つの脚部２２ａ、２２ｂ、２２ｃ、２２ｄの位置にそれぞれ４個のロードセル１ａ、１ｂ、１ｃ、１ｄが配置されている。そして、本実施形態に係る計量装置２０においては、各ロードセル１ａ、１ｂ、１ｃ、１ｄの起歪体２ａ、２ｂ、２ｃ、２ｄの起歪部５に上面・下面それぞれ２個のひずみゲージ７ａ、７ｂ、７ｃ、７ｄが貼着されている。計量装置２０は、ロードセル１ａ〜１ｄに貼着されているひずみゲージ７ａ、７ｂ、７ｃ、７ｄからの検出信号に基づいて、被計量物の荷重を測定する。なお、図３では、上面に貼着されたひずみゲージ７ａ、７ｂを図示するとともに、温度補償ゲージ１１は省略している。 FIG. 3 is a plan view showing an example of a weighing device equipped with the load cell 1 according to the present invention. The structure of the weighing device 20 equipped with the load cell according to the present invention will be described with reference to FIG.
In the case of a weighing device such as a scale, it is generally composed of a rectangular parallelepiped housing 21 and leg portions 22a, 22b, 22c, 22d provided at four corners thereof, and four leg portions 22a, 22b, 22c. , 22d, four load cells 1a, 1b, 1c, 1d are arranged, respectively. In the weighing device 20 according to this embodiment, the strain cells 2a, 2b, 2c, and 2d of the load cells 1a, 1b, 1c, and 1d have two strain gauges 7a on the top surface and the bottom surface, respectively. 7b, 7c, and 7d are attached. The weighing device 20 measures the load of the object to be weighed based on the detection signals from the strain gauges 7a, 7b, 7c, and 7d attached to the load cells 1a to 1d. In FIG. 3, the strain gauges 7 a and 7 b attached to the upper surface are illustrated, and the temperature compensation gauge 11 is omitted.

本構成により、被計量物の荷重を、起歪体２の中央位置に配置される起歪部５と、この起歪部５を挟んで中心軸に対して対称に配置されている一対の荷重支持部６ａ、６ｂの３本の梁で支持することにより、ねじれがなく、中心軸に対し対称に変位するという作用効果を奏する。   With this configuration, the load of the object to be weighed is a strain generating portion 5 disposed at the center position of the strain generating body 2, and a pair of loads disposed symmetrically with respect to the central axis across the strain generating portion 5. By supporting with the three beams of the support portions 6a and 6b, there is an effect that there is no twist and displacement is symmetrical with respect to the central axis.

本実施形態によれば、起歪部５は両端が固定され、そして、荷重受け部４ａ、４ｂは一端が固定され他端が自由である梁形状をしており、加わった荷重に応じて荷重方向に主に変位することができるように形成されているため、被計量物を正しく測定することができる。
また、２つの荷重支持部６ａ、６ｂを起歪部５に対して対称位置に配置することにより、各梁（２つの荷重支持部６ａ、６ｂ、起歪部５）の変形量が等しくなり、かつ、ねじりによる偏荷重も低減することができ、高精度に被計量物を測定することができる。
また、起歪体２を構成する板状部材をプレス加工することにより、起歪体５の高さを均一に低くすることができる。 According to this embodiment, both ends of the strain generating portion 5 are fixed, and the load receiving portions 4a and 4b have a beam shape in which one end is fixed and the other end is free, and a load is applied according to the applied load. Since it is formed so as to be able to be displaced mainly in the direction, the object to be weighed can be measured correctly.
Further, by arranging the two load support portions 6a and 6b in a symmetrical position with respect to the strain generating portion 5, the deformation amount of each beam (two load support portions 6a and 6b and the strain generating portion 5) becomes equal. In addition, the uneven load due to torsion can be reduced, and the object to be weighed can be measured with high accuracy.
Moreover, the height of the strain body 5 can be reduced uniformly by pressing the plate-like member constituting the strain body 2.

以上、実施形態を用いて本発明を説明したが、本発明の技術的範囲は上記実施形態に記載の範囲には限定されない。上記実施形態に、多様な変更または改良を加えることが可能であることが当業者に明らかである。また、その様な変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。   As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the description of the scope of claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.

１ ロードセル
２ 起歪体
３ａ、３ｂ スリット
４ａ、４ｂ 荷重受け部
５ 起歪部
６ａ、６ｂ 荷重支持部
７（７ａ〜７ｄ） ひずみゲージ
１０ａ、１０ｂ 窪み部 DESCRIPTION OF SYMBOLS 1 Load cell 2 Strain body 3a, 3b Slit 4a, 4b Load receiving part 5 Strain part 6a, 6b Load support part 7 (7a-7d) Strain gauge 10a, 10b Depression part

Claims (5)

被計量物の荷重を測定するための薄い平板状の起歪体であって、
前記被計量物を載置する計量物受け皿を支持する一対の荷重受け部と、
前記一対の荷重受け部を挟んだ位置に配置され、前記被計量物の前記荷重を受けることによりひずむ起歪部と、
前記荷重受け部の外側に配置され、荷重を支持する荷重支持部を有し、
前記起歪部は、その両端が固定された梁からなり、前記荷重受け部と前記起歪部と前記荷重支持部とが一体的に形成されていることを特徴とする起歪体。 A thin plate-shaped strain body for measuring the load of an object to be weighed,
A pair of load receivers for supporting a weighing object tray on which the object to be weighed is placed;
A strain-inducing portion that is disposed at a position between the pair of load receiving portions, and is distorted by receiving the load of the object to be weighed,
A load support portion disposed outside the load receiving portion and supporting a load;
The strain-generating member is formed of a beam having both ends fixed, and the load receiving portion, the strain-generating portion, and the load supporting portion are integrally formed. 前記荷重受け部は、その一端が固定され他端が自由である梁からなることを特徴とする請求項１に記載の起歪体。   The strain body according to claim 1, wherein the load receiving portion is made of a beam having one end fixed and the other end being free. 請求項１または２に記載の起歪体を備え、
前記起歪部および前記荷重支持部のうち少なくともいずれか一方にひずみ検出素子を貼着することを特徴とするロードセル。 The strain body according to claim 1 or 2,
A load cell, wherein a strain detecting element is attached to at least one of the strain generating portion and the load supporting portion. 前記荷重支持部は、前記ひずみ検出素子のひずみ受感部に対応する位置の近傍領域を他の部分に対して薄く形成することを特徴とする請求項３に記載のロードセル。   The load cell according to claim 3, wherein the load supporting portion is formed so that a region near a position corresponding to the strain sensing portion of the strain detecting element is thinner than other portions. 請求項３または４に記載のロードセルを１個以上備え、
前記ロードセルに貼着されているひずみ検出素子からの検出信号に基づいて、前記被計量物の荷重を測定することを特徴とする計量装置。 One or more load cells according to claim 3 or 4,
A weighing apparatus that measures a load of the object to be weighed based on a detection signal from a strain detection element attached to the load cell.
JP2012262315A 2012-11-30 2012-11-30 Strain body, load cell and weighing apparatus Pending JP2014109438A (en)

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CN201320735038.4U CN203595545U (en) 2012-11-30 2013-11-19 Strain body, force transducer and metering device
DE201310113173 DE102013113173A1 (en) 2012-11-30 2013-11-28 Strain, force sensor measuring device, has load bearing part provided with bearing device, measuring objects measuring load of thin plate, and two strain parts fixed with end of beam, load receiving part, strain part and load bearing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022154083A1 (en) 2021-01-15 2022-07-21 株式会社タニタ Scale, strain-generating body, and load cell
WO2022185979A1 (en) 2021-03-01 2022-09-09 株式会社タニタ Load cell, scale, and strain sensor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6082487B2 (en) * 2015-06-12 2017-02-15 ミネベアミツミ株式会社 Load detector and load detection system
DE102019123223B4 (en) * 2019-08-29 2021-11-25 Minebea Intec GmbH Compensation of the temperature dependency of the zero point of a Wheatstone measuring bridge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0430449U (en) * 1990-07-05 1992-03-11
JPH05505670A (en) * 1989-12-11 1993-08-19 株式会社タニタ One-piece mass-produced flat load cell and weight scale incorporating it
JP2011191126A (en) * 2010-03-12 2011-09-29 Ishida Co Ltd Strain element, load cell, and multi-point type balance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510581A (en) 1994-05-18 1996-04-23 Angel; Shlomo Mass-produced flat multiple-beam load cell and scales incorporating it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505670A (en) * 1989-12-11 1993-08-19 株式会社タニタ One-piece mass-produced flat load cell and weight scale incorporating it
JPH0430449U (en) * 1990-07-05 1992-03-11
JP2011191126A (en) * 2010-03-12 2011-09-29 Ishida Co Ltd Strain element, load cell, and multi-point type balance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022154083A1 (en) 2021-01-15 2022-07-21 株式会社タニタ Scale, strain-generating body, and load cell
WO2022185979A1 (en) 2021-03-01 2022-09-09 株式会社タニタ Load cell, scale, and strain sensor

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