JP5781952B2 - Sample holder and gas diffusion coefficient measuring device - Google Patents

Sample holder and gas diffusion coefficient measuring device Download PDF

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JP5781952B2
JP5781952B2 JP2012017536A JP2012017536A JP5781952B2 JP 5781952 B2 JP5781952 B2 JP 5781952B2 JP 2012017536 A JP2012017536 A JP 2012017536A JP 2012017536 A JP2012017536 A JP 2012017536A JP 5781952 B2 JP5781952 B2 JP 5781952B2
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sample
sample holder
blade
holder
diffusion coefficient
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JP2013156176A (en
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克英 菊地
克英 菊地
紘敬 大平
紘敬 大平
城司 冨安
城司 冨安
敦巳 井田
敦巳 井田
敦巳 山本
敦巳 山本
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Toyota Motor Corp
Soken Inc
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Nippon Soken Inc
Toyota Motor Corp
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Description

この発明は、多孔体のガス拡散性測定装置に関し、特に試料を保持する試料ホルダに関する。   The present invention relates to a gas diffusivity measuring device for a porous body, and more particularly to a sample holder for holding a sample.

被測定物である多孔体をジェル状パッドで囲って固定する多孔体の酸素拡散係数測定装置が知られている（特許文献１）。   An oxygen diffusion coefficient measuring device for a porous body is known that surrounds and fixes a porous body, which is an object to be measured, with a gel pad (Patent Document 1).

特開２００６−２９２７１４JP 2006-292714 A

従来の技術では、試料の寸法の調整や固定に時間がかかるという問題があった。   The conventional technique has a problem that it takes time to adjust and fix the dimensions of the sample.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、多孔体のガス拡散性を測定する場合において、簡便に試料を準備し、測定することを目的とする。   The present invention has been made to solve at least a part of the above-described problems, and an object of the present invention is to easily prepare and measure a sample when measuring the gas diffusibility of a porous body.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態又は適用例として実現することが可能である。   SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

［適用例１］
ガス拡散係数計測装置用の試料ホルダであって、試料を切断するための閉じた刃を有し、前記刃の内側に中空部をする試料切断部と、前記刃と反対側において前記試料切断部を支持する支持部と、を備え、前記試料ホルダは、前記試料切断部の前記刃が被測定材料に押しつけてられたときに前記刃に沿って前記被測定材料から試料を切ると共に、切り取られた前記試料を前記中空部に保持する、試料ホルダ。
この適用例によれば、簡便に試料を準備し、測定することが可能となる。また、試料ホルダの内側の形状、寸法と、被測定物の形状、寸法とを同じにできるので、試料ホルダと被測定物の隙間を無くすことができる。 [Application Example 1]
A sample holder for a gas diffusion coefficient measuring device, having a closed blade for cutting a sample and having a hollow portion inside the blade, and the sample cutting portion on the opposite side of the blade A support portion that supports the sample holder, and the sample holder cuts the sample from the material to be measured along the blade when the blade of the sample cutting portion is pressed against the material to be measured. A sample holder for holding the sample in the hollow portion.
According to this application example, a sample can be easily prepared and measured. Further, since the shape and dimensions inside the sample holder and the shape and dimensions of the object to be measured can be made the same, the gap between the sample holder and the object to be measured can be eliminated.

［適用例２］
適用例１に記載の試料ホルダにおいて、前記試料ホルダは、前記試料の側面と、前記刃の内周面との摩擦力により、前記試料を保持する、試料ホルダ。
この適用例によれば、被測定物を保持するのに、他の部材が不要である。 [Application Example 2]
The sample holder according to Application Example 1, wherein the sample holder holds the sample by a frictional force between a side surface of the sample and an inner peripheral surface of the blade.
According to this application example, no other member is required to hold the object to be measured.

［適用例３］
適用例２に記載の試料ホルダにおいて、前記刃は、前記刃の内面が前記試料の表面に対して垂直であり、前記刃の外面が、前記内面から傾斜した傾斜面を有する、片刃である、試料ホルダ。
この適用例によれば、刃を薄くして切断性を高めると共に、刃の内側が被測定物に対して垂直であるので、被測定物が圧縮されたりしない。 [Application Example 3]
In the sample holder according to Application Example 2, the blade is a single blade in which the inner surface of the blade is perpendicular to the surface of the sample, and the outer surface of the blade has an inclined surface inclined from the inner surface. Sample holder.
According to this application example, the blade is thinned to improve cutting performance, and the inside of the blade is perpendicular to the object to be measured, so the object to be measured is not compressed.

［適用例４］
適用例２または３に記載の試料ホルダにおいて、前記試料切断部が前記支持部から突き出ている高さは、前記被測定材料の厚さよりも高い、試料ホルダ。
この適用例によれば、被測定物が、試料ホルダからはみ出ることはない。 [Application Example 4]
The sample holder according to Application Example 2 or 3, wherein the height at which the sample cutting portion protrudes from the support portion is higher than the thickness of the material to be measured.
According to this application example, the object to be measured does not protrude from the sample holder.

［適用例５］
適用例１に記載の試料ホルダにおいて、前記刃の内面に、前記試料を保持するための突起を有する、試料ホルダ。
この適用例によれば、被測定物を確実に保持できる。 [Application Example 5]
The sample holder according to Application Example 1, wherein the inner surface of the blade has a protrusion for holding the sample.
According to this application example, the object to be measured can be reliably held.

［適用例６］
適用例１に記載の試料ホルダにおいて、前記刃は、前記刃の内面が前記刃の先端から奥に行くほど前記中空部の断面が大きくなる逆テーパー形状に形成された逆テーパー部と、前記逆テーパー部の奥に設けられた窪みと、を有する、試料ホルダ。
この適用例によれば、窪みに被測定物を保持できる。 [Application Example 6]
In the sample holder according to Application Example 1, the blade includes a reverse taper portion formed in a reverse taper shape in which a cross section of the hollow portion increases as an inner surface of the blade goes from the tip of the blade toward the back, and the reverse A sample holder having a recess provided in the back of the tapered portion.
According to this application example, the object to be measured can be held in the recess.

［適用例７］
ガス拡散係数計測装置であって、ガスセンサと、前記ガスセンサと連通する開口部を有するホルダ保持部と、前記ホルダ保持部の前記開口部を覆うように配置される請求項１〜６のいずれか一項に記載の試料ホルダと、を備え、前記試料ホルダは、前記中空部に保持された試料及び前記開口部を介してのみ前記試料ホルダの外部のガスが前記ガスセンサに到達可能な状態に配置されている、ガス拡散係数計測装置。
この適用例によれば、試料ホルダと被測定物の隙間がないので、誤差の少ない測定を行うことが出来る。 [Application Example 7]
It is a gas diffusion coefficient measuring apparatus, Comprising: The holder holding part which has an opening part connected with a gas sensor, and the said gas sensor, It arrange | positions so that the said opening part of the said holder holding part may be covered. The sample holder is disposed in a state in which gas outside the sample holder can reach the gas sensor only through the sample held in the hollow portion and the opening. Gas diffusion coefficient measuring device.
According to this application example, since there is no gap between the sample holder and the object to be measured, measurement with little error can be performed.

なお、本発明は、種々の形態で実現することが可能であり、例えば、試料ホルダの他、ガス拡散係数計測装置、試料の作成方法等の形態で実現することができる。   The present invention can be realized in various forms. For example, in addition to the sample holder, the present invention can be realized in the form of a gas diffusion coefficient measuring device, a sample preparation method, and the like.

ガス拡散係数計測装置で用いる試料を作成する試料作成装置を示す説明図である。It is explanatory drawing which shows the sample preparation apparatus which produces the sample used with a gas diffusion coefficient measuring apparatus. 試料ホルダの構成を示す説明図である。It is explanatory drawing which shows the structure of a sample holder. 試料ホルダの刃部近傍を拡大して示す説明図である。It is explanatory drawing which expands and shows the blade part vicinity of a sample holder. 試料ホルダ及び試料の設置を示す説明図である。It is explanatory drawing which shows installation of a sample holder and a sample. 試料の切断を示す説明図である。It is explanatory drawing which shows the cutting | disconnection of a sample. 試料ホルダを試料作成装置から取り外した状態を示す説明図である。It is explanatory drawing which shows the state which removed the sample holder from the sample preparation apparatus. ガス拡散係数計測装置の一例を示す説明図である。It is explanatory drawing which shows an example of a gas diffusion coefficient measuring device. 比較例の試料ホルダの構成を示す説明図である。It is explanatory drawing which shows the structure of the sample holder of a comparative example. ガス拡散抵抗の測定結果を示す説明図である。It is explanatory drawing which shows the measurement result of gas diffusion resistance. 試料ホルダの変形例を示す説明図である。It is explanatory drawing which shows the modification of a sample holder. 試料ホルダに試料を保持させた状態を示す説明図である。It is explanatory drawing which shows the state which made the sample holder hold | maintain the sample. 試料ホルダの別の変形例を示す説明図である。It is explanatory drawing which shows another modification of a sample holder. 試料ホルダに試料を保持させた状態を示す説明図である。It is explanatory drawing which shows the state which made the sample holder hold | maintain the sample. 試料ホルダの別の変形例を示す説明図である。It is explanatory drawing which shows another modification of a sample holder.

図１は、ガス拡散係数計測装置で用いる試料を作成する試料作成装置を示す説明図である。試料作成装置１０は、基台１００と、テーブル１０５と、支柱１１０と、ハンドル１２０と、フレーム１３０と、押下部１４０と、打ち抜き台１５０と、を備える。基台１００の上に支柱１１０が立っている。支柱１１０の途中には、テーブル１０５が取り付けられている。なお、試料作成装置１０は、基台１００からのテーブル１０５の高さを変えることが出来る高さ調整機構１１２を備えている。高さ調整機構１１２は、ラック１１４と、ピニオンギア１１６と、調整つまみ１１８と、を備える。ラック１１４は、支柱１１０に設けられている。ピニオンギア１１６は、ラック１１４に咬み合うとともに、テーブル１０５及び調整つまみ１１８に取り付けられている。調整つまみ１１８を回転させると、ピニオンギア１１６も回転し、ピニオンギア１１６は、ラック１１４上を上下に移動、すなわち、テーブル１０５が上下する。支柱１１０の上部に設けられたフレーム１３０は、支柱１１０からテーブル１０５の中央に向かって水平な姿勢で固定されている。フレーム１３０は、テーブル１０５のほぼ中央にあたる位置に、開口部１３５を有している。また、支柱１１０の上部には、ハンドル１２０がピン１６０によりピン１６０周りに回動可能に留められている。ハンドル１２０は、ハンドル１２０の方向に沿った細長い開口部１２５を有しており、この開口部１２５に押下部１４０がピン１７０により取り付けられている。なお、ピン１７０は、開口部１２５の中を移動可能である。押下部１４０は、フレーム１３０の開口部１３５を貫通している。押下部１４０の下端には、水平な板状体１４５が設けられている。この板状体１４５の下にはネジ穴１４７が形成されており、試料ホルダ２０が着脱可能に取り付けられる。打ち抜き台１５０は、中央部に開口部１５５を有しており、テーブル１０５の上に配置される。打ち抜き台１５０の上に試料３０が配置される。   FIG. 1 is an explanatory view showing a sample preparation device for preparing a sample used in a gas diffusion coefficient measurement device. The sample preparation device 10 includes a base 100, a table 105, a support 110, a handle 120, a frame 130, a pressing unit 140, and a punching table 150. A support column 110 stands on the base 100. A table 105 is attached in the middle of the column 110. The sample preparation device 10 includes a height adjustment mechanism 112 that can change the height of the table 105 from the base 100. The height adjustment mechanism 112 includes a rack 114, a pinion gear 116, and an adjustment knob 118. The rack 114 is provided on the column 110. The pinion gear 116 meshes with the rack 114 and is attached to the table 105 and the adjustment knob 118. When the adjustment knob 118 is rotated, the pinion gear 116 is also rotated, and the pinion gear 116 is moved up and down on the rack 114, that is, the table 105 is moved up and down. The frame 130 provided on the upper portion of the column 110 is fixed in a horizontal posture from the column 110 toward the center of the table 105. The frame 130 has an opening 135 at a position substantially in the center of the table 105. Further, a handle 120 is fastened around the pin 160 by a pin 160 at the upper part of the support 110. The handle 120 has an elongated opening 125 along the direction of the handle 120, and a pressing portion 140 is attached to the opening 125 by a pin 170. Note that the pin 170 is movable in the opening 125. The pressing unit 140 passes through the opening 135 of the frame 130. A horizontal plate 145 is provided at the lower end of the pressing unit 140. A screw hole 147 is formed under the plate-like body 145, and the sample holder 20 is detachably attached. The punching table 150 has an opening 155 at the center and is disposed on the table 105. The sample 30 is placed on the punching table 150.

図２は、試料ホルダの構成を示す説明図である。試料ホルダ２０は、平板状の支持部２００と、支持部２００から突き出た円周状の刃部２１０とを有している。支持部２００は、取付け穴２０５を備えており、試料ホルダ２０は、この取付け穴２０５を貫通したネジ１８０により、試料作成装置１０の押下部１４０の下端にある板状体１４５のネジ穴１４７に取り付けられている（図１）。なお、取付け穴２０５は、試料ホルダ２０を後述するガス拡散係数計測装置に取り付けるためにも用いられる。   FIG. 2 is an explanatory diagram showing the configuration of the sample holder. The sample holder 20 includes a flat plate-like support portion 200 and a circumferential blade portion 210 protruding from the support portion 200. The support part 200 is provided with an attachment hole 205, and the sample holder 20 is screwed into the screw hole 147 of the plate-like body 145 at the lower end of the pressing part 140 of the sample preparation device 10 by a screw 180 passing through the attachment hole 205. It is attached (FIG. 1). The attachment hole 205 is also used for attaching the sample holder 20 to a gas diffusion coefficient measuring device described later.

図３は、試料ホルダの刃部近傍を拡大して示す説明図である。刃部２１０は、内側が支持部２００の表面に対して垂直な内周面２１５を有し、外側は内周面２１５から傾斜した斜面２１６を有する、片刃である。また、刃部２１０は、その全集にわたって刃が設けられた「閉じた刃」である。内周面２１５に傾斜があると、切断された試料は、表面と裏面で大きさが異なる円錐台形状となり、小さい方の底面で試料が圧縮される虞があるが、内周面２１５が垂直である刃部２１０であれば、表面と裏面で大きさが同じ大きさとなるため、試料が圧縮される虞がない。また、刃部２１０の高さは、試料３０の厚さよりも大きい。刃部２１０の高さが試料３０の厚さよりも大きければ、試料３０が試料ホルダ２０からはみ出ることがない。したがって、試料３０の厚さに応じて、刃部２１０の高さが異なる試料ホルダ２０を用いることが好ましい。   FIG. 3 is an explanatory diagram showing an enlarged view of the vicinity of the blade portion of the sample holder. The blade portion 210 is a single blade having an inner peripheral surface 215 whose inner side is perpendicular to the surface of the support portion 200 and an outer surface having a slope 216 inclined from the inner peripheral surface 215. The blade portion 210 is a “closed blade” in which blades are provided over the entire collection. If the inner peripheral surface 215 is inclined, the cut sample has a truncated cone shape with different sizes on the front and back surfaces, and the sample may be compressed on the smaller bottom surface, but the inner peripheral surface 215 is vertical. In the case of the blade portion 210, the size is the same on the front surface and the back surface, so there is no possibility that the sample is compressed. Further, the height of the blade portion 210 is larger than the thickness of the sample 30. If the height of the blade portion 210 is larger than the thickness of the sample 30, the sample 30 does not protrude from the sample holder 20. Therefore, it is preferable to use the sample holder 20 in which the height of the blade portion 210 is different depending on the thickness of the sample 30.

図４は、試料ホルダ及び試料の設置を示す説明図である。まず、押下部１４０の下部１４５に試料ホルダ２０がネジ１８０により取り付けられる。このとき、刃部２１０の先端と、打ち抜き台１５０と、の間隔は、試料３０の厚さよりも広くなっている。なお、刃部２１０の先端と、打ち抜き台１５０と、の間隔が試料３０の厚さよりも狭い場合には、高さ調整機構１１２を用いて、テーブル１０５の高さを下げることにより、刃部２１０の先端と、打ち抜き台１５０と、の間隔を広げることが可能である。試料ホルダ２０が設置された後、開口部１５５が刃部２１０の真下の位置に来るように、打ち抜き台１５０が配置され、打ち抜き台１５０の上に試料３０が設置される。   FIG. 4 is an explanatory view showing the installation of the sample holder and the sample. First, the sample holder 20 is attached to the lower portion 145 of the pressing unit 140 with the screws 180. At this time, the distance between the tip of the blade part 210 and the punching table 150 is wider than the thickness of the sample 30. In addition, when the space | interval of the front-end | tip of the blade part 210 and the punching stand 150 is narrower than the thickness of the sample 30, the blade part 210 is lowered | hung by reducing the height of the table 105 using the height adjustment mechanism 112. It is possible to widen the distance between the tip of the metal plate and the punching table 150. After the sample holder 20 is installed, the punching stand 150 is arranged so that the opening 155 is located immediately below the blade portion 210, and the sample 30 is placed on the punching stand 150.

図５は、試料の切断を示す説明図である。図１のハンドル１２０が下げられると、開口部１２５も下がるので、ピン１７０を下げ、押下部１４０も下げられる。その結果、試料ホルダ２０が下がる。試料ホルダ２０の刃部２１０が試料３０に接触すると、試料３０を切断し始める。刃部２１０が打ち抜き台１５０に達すると、刃部２１０の内部の試料３０は、刃部２１０の外部から切り離される。   FIG. 5 is an explanatory view showing the cutting of the sample. When the handle 120 of FIG. 1 is lowered, the opening 125 is also lowered, so that the pin 170 is lowered and the pressing portion 140 is also lowered. As a result, the sample holder 20 is lowered. When the blade portion 210 of the sample holder 20 comes into contact with the sample 30, the sample 30 starts to be cut. When the blade part 210 reaches the punching table 150, the sample 30 inside the blade part 210 is separated from the outside of the blade part 210.

図６は、試料ホルダを試料作成装置から取り外した状態を示す説明図である。試料ホルダ２０は、刃部２１０の先端部に切り離された試料３０を保持している。試料３０の外形寸法は、刃部２１０の内周面２１５の内径寸法と同じである。試料３０の側面と、刃部２１０の内周面２１５との摩擦力により、試料３０は、刃部２１０の先端部に保持される。   FIG. 6 is an explanatory view showing a state in which the sample holder is detached from the sample preparation device. The sample holder 20 holds the sample 30 cut off at the tip of the blade part 210. The external dimensions of the sample 30 are the same as the internal diameter dimensions of the inner peripheral surface 215 of the blade part 210. The sample 30 is held at the tip of the blade 210 by the frictional force between the side surface of the sample 30 and the inner peripheral surface 215 of the blade 210.

図７は、ガス拡散係数計測装置の一例を示す説明図である。ガス拡散係数計測装置４０は、ケース４００と、ケース４００の内部に配置されたガスセンサ４１０とを備える。ケース４００のうち一方の面４０２は、ガスセンサ４１０に通じる開口部４０５を備えている。なお、この面４０２は、試料ホルダ２０をネジ４２０で取り付けられるように平坦となっている。なお、面４０２と試料ホルダ２０との間には、Ｏリング４３０が配置され、試料３０以外を通るガスの流れが抑制される。ガスセンサ４１０は、例えば、試料３０の酸素透過性を測定する場合には、酸素センサが用いられる。   FIG. 7 is an explanatory diagram showing an example of a gas diffusion coefficient measuring apparatus. The gas diffusion coefficient measuring device 40 includes a case 400 and a gas sensor 410 disposed inside the case 400. One surface 402 of the case 400 includes an opening 405 that communicates with the gas sensor 410. The surface 402 is flat so that the sample holder 20 can be attached with screws 420. Note that an O-ring 430 is disposed between the surface 402 and the sample holder 20 to suppress the flow of gas that passes through other than the sample 30. As the gas sensor 410, for example, when measuring the oxygen permeability of the sample 30, an oxygen sensor is used.

試料３０の酸素透過性を測定する場合には、例えば、窒素雰囲気中でガス拡散係数計測装置４０に、試料３０が保持された試料ホルダ２０が取り付けられる。その後、ガス拡散係数計測装置４０は、空気雰囲気中あるいは、酸素雰囲気中に移動される。酸素は、酸素分圧の違いにより、試料ホルダ２０中の試料３０を通って、開口部４０５内部に拡散する。ガスセンサ４１０は、この酸素分圧を測定する。   When measuring the oxygen permeability of the sample 30, for example, the sample holder 20 holding the sample 30 is attached to the gas diffusion coefficient measuring device 40 in a nitrogen atmosphere. Thereafter, the gas diffusion coefficient measuring device 40 is moved into an air atmosphere or an oxygen atmosphere. Oxygen diffuses into the opening 405 through the sample 30 in the sample holder 20 due to the difference in oxygen partial pressure. The gas sensor 410 measures this oxygen partial pressure.

図８は、比較例の試料保持部の構成を示す説明図である。比較例の試料ホルダは、円柱形の試料５３０の外縁に配置される円筒形の弾性体５４０と、試料５３０及び弾性体５４０の円柱の両底面の配置される２枚の押さえ板５５０、５６０を備える。   FIG. 8 is an explanatory diagram showing a configuration of a sample holder of a comparative example. The sample holder of the comparative example includes a cylindrical elastic body 540 disposed on the outer edge of the columnar sample 530, and two pressing plates 550 and 560 disposed on both bottom surfaces of the column of the sample 530 and the elastic body 540. Prepare.

図９は、ガス拡散抵抗の測定結果を示す説明図である。本実施例の試料ホルダ２０を用いた場合、バラツキは、５．５％以内に収まっているが、比較例の試料ホルダ５００を用いた場合、バラツキは最大１７％となっており、本実施例の試料ホルダ２０を用いた方が、バラツキが少ない。本実施例では、試料ホルダ２０の刃部２１０で試料３０を切り取るとともに保持するので試料ホルダ２０の内周面２１５と、試料３０との間に隙間などが生じにくいが、比較例では、試料５３０を切り取ったのちに弾性体５４０、押さえ板５５０、５６０を配置するので、試料５３０と弾性体５４０、押さえ板５５０、５６０との間に隙間が生じたり、押さえ板５５０、５６０により圧縮されたりするので、測定結果にバラツキが大きくなると考えられる。     FIG. 9 is an explanatory diagram showing measurement results of gas diffusion resistance. When the sample holder 20 of the present embodiment is used, the variation is within 5.5%. However, when the sample holder 500 of the comparative example is used, the variation is 17% at the maximum. The variation using the sample holder 20 is smaller. In this embodiment, since the sample 30 is cut and held by the blade portion 210 of the sample holder 20, a gap or the like is hardly generated between the inner peripheral surface 215 of the sample holder 20 and the sample 30, but in the comparative example, the sample 530 is not formed. Since the elastic body 540 and the pressing plates 550 and 560 are disposed after cutting, the gap is generated between the sample 530 and the elastic body 540 and the pressing plates 550 and 560, or the pressing plates 550 and 560 are compressed. Therefore, it is considered that the measurement results vary greatly.

以上、本実施例によれば、試料３０を簡便に準備することができる。また、酸素（ガス）がガスセンサ４１０に通ずる経路は、試料ホルダ２０中の試料３０を通る経路のみなので、隙間がなくバラツキが少ないので、試料３０のガス透過性を精度よく測定することができる。   As described above, according to the present embodiment, the sample 30 can be easily prepared. In addition, since the path through which oxygen (gas) passes through the gas sensor 410 is only the path through the sample 30 in the sample holder 20, there is no gap and the variation is small, so that the gas permeability of the sample 30 can be accurately measured.

図１０は、試料ホルダの変形例を示す説明図である。この試料ホルダ２０ａは、刃部２１０の内周面２１５の先端部に複数の突起２２０を備えている。図１１は、試料ホルダ２０ａに試料３０を保持させた状態を示す説明図である。この変形例によれば、試料３０に突起２２０が食い込むため、本実施例に比べて、試料３０が強く試料ホルダ２０ａに保持される。したがって、試料３０を、刃部２１０の先端部に保持し、試料３０が、刃部２１０の奥、すなわち、支持部２００に移動することを抑制する。   FIG. 10 is an explanatory view showing a modification of the sample holder. The sample holder 20 a includes a plurality of protrusions 220 at the tip of the inner peripheral surface 215 of the blade part 210. FIG. 11 is an explanatory diagram showing a state in which the sample 30 is held by the sample holder 20a. According to this modification, since the protrusions 220 bite into the sample 30, the sample 30 is strongly held by the sample holder 20a as compared with the present embodiment. Therefore, the sample 30 is held at the tip of the blade part 210, and the sample 30 is prevented from moving to the back of the blade part 210, that is, the support part 200.

図１２は、試料ホルダの別の変形例を示す説明図である。この試料ホルダ２０ｂでは、刃部２１０の先端部の内周面に窪み部２２５（段差部）が形成されている。また、窪み部２２５よりも刃の先端側には、逆テーパー形状に形成された斜面２２６が設けられている。そのため、刃部２１０の先端は、本実施例よりも鋭くなっている。図１３は、変形例の試料ホルダに試料を保持させた状態を示す説明図である。この変形例によれば、窪み部２２５に試料を保持することができる。すなわち、試料３０を、刃部２１０の先端部に保持し、試料３０が、刃部２１０の奥、すなわち、支持部２００に移動することを抑制する。なお、刃部２１０の先端（図１２では下端）から窪み部２２５の上端までの高さは、試料３０の厚み以上とすることが好ましい。   FIG. 12 is an explanatory view showing another modification of the sample holder. In the sample holder 20b, a recess 225 (stepped portion) is formed on the inner peripheral surface of the distal end portion of the blade portion 210. Further, an inclined surface 226 formed in a reverse taper shape is provided on the tip end side of the blade with respect to the recess 225. Therefore, the tip of the blade part 210 is sharper than the present embodiment. FIG. 13 is an explanatory diagram illustrating a state in which a sample is held by a sample holder according to a modification. According to this modification, the sample can be held in the recess 225. That is, the sample 30 is held at the tip of the blade part 210, and the sample 30 is prevented from moving to the back of the blade part 210, that is, the support part 200. Note that the height from the tip of the blade portion 210 (the lower end in FIG. 12) to the upper end of the recessed portion 225 is preferably equal to or greater than the thickness of the sample 30.

図１４は、試料ホルダの別の変形例を示す説明図である。この試料ホルダ２０ｃでは、刃部２１０の外周側の全周にわたって第２の刃部２３０を備えている。この変形例によれば、第１の刃部２１０の外側に第２の刃部２３０を備えているので、第１の刃部２１０で試料を完全に切断することができなくても、第２の刃部２３０で切断することが出来る。   FIG. 14 is an explanatory view showing another modification of the sample holder. In the sample holder 20c, the second blade portion 230 is provided over the entire outer periphery of the blade portion 210. According to this modification, since the second blade portion 230 is provided outside the first blade portion 210, the second blade portion 230 can be cut even if the first blade portion 210 cannot completely cut the sample. It can cut | disconnect with the blade part 230.

以上、いくつかの実施例に基づいて本発明の実施の形態について説明してきたが、上記した発明の実施の形態は、本発明の理解を容易にするためのものであり、本発明を限定するものではない。本発明は、その趣旨並びに特許請求の範囲を逸脱することなく、変更、改良され得るとともに、本発明にはその等価物が含まれることはもちろんである。   The embodiments of the present invention have been described above based on some examples. However, the above-described embodiments of the present invention are for facilitating the understanding of the present invention and limit the present invention. It is not a thing. The present invention can be changed and improved without departing from the spirit and scope of the claims, and it is needless to say that the present invention includes equivalents thereof.

１０…試料作成装置
２０…試料ホルダ
３０…試料
４０…ガス拡散係数計測装置
１００…基台
１０５…テーブル
１１０…支柱
１１２…高さ調整機構
１１４…ラック
１１６…ピニオンギア
１１８…調整つまみ
１２０…ハンドル
１２５…開口部
１３０…フレーム
１３５…開口部
１４０…押下部
１４５…板状体
１５０…台
１５５…開口部
１６０…ピン
１７０…ピン
１８０…ネジ
２００…支持部
２０５…ネジ穴
２１０…刃部
２１５…内周面
２１６…斜面
２２０…突起
２３０…第２の刃部
４００…ケース
４０２…面
４０５…開口部
４１０…ガスセンサ
４２０…ネジ
４３０…Ｏリング DESCRIPTION OF SYMBOLS 10 ... Sample preparation apparatus 20 ... Sample holder 30 ... Sample 40 ... Gas diffusion coefficient measuring apparatus 100 ... Base 105 ... Table 110 ... Support column 112 ... Height adjustment mechanism 114 ... Rack 116 ... Pinion gear 118 ... Adjustment knob 120 ... Handle 125 ... Opening part 130 ... Frame 135 ... Opening part 140 ... Pressing part 145 ... Plate-like body 150 ... Stand 155 ... Opening part 160 ... Pin 170 ... Pin 180 ... Screw 200 ... Supporting part 205 ... Screw hole 210 ... Blade part 215 ... Inside Peripheral surface 216 ... Slope 220 ... Protrusion 230 ... Second blade part 400 ... Case 402 ... Face 405 ... Opening part 410 ... Gas sensor 420 ... Screw 430 ... O-ring

Claims (7)

ガス拡散係数計測装置用の試料ホルダであって、
試料を切断するための閉じた刃を有し、前記刃の内側に中空部をする試料切断部と、
前記刃と反対側において前記試料切断部を支持する支持部と、
を備え、
前記試料ホルダは、前記試料切断部の前記刃が被測定材料に押しつけてられたときに前記刃に沿って前記被測定材料から試料を切ると共に、切り取られた前記試料を前記中空部に保持する、試料ホルダ。 A sample holder for a gas diffusion coefficient measuring device,
A sample cutting part having a closed blade for cutting the sample and having a hollow part inside the blade;
A support part for supporting the sample cutting part on the opposite side of the blade;
With
The sample holder cuts the sample from the material to be measured along the blade when the blade of the sample cutting portion is pressed against the material to be measured, and holds the cut sample in the hollow portion. , Sample holder. 請求項１に記載の試料ホルダにおいて、
前記試料ホルダは、前記試料の側面と、前記刃の内周面との摩擦力により、前記試料を保持する、試料ホルダ。 The sample holder according to claim 1,
The sample holder is a sample holder that holds the sample by a frictional force between a side surface of the sample and an inner peripheral surface of the blade. 請求項２に記載の試料ホルダにおいて、
前記刃は、前記刃の内面が前記試料の表面に対して垂直であり、前記刃の外面が、前記内面から傾斜した傾斜面を有する、片刃である、試料ホルダ。 The sample holder according to claim 2,
The sample holder is a sample holder in which the inner surface of the blade is perpendicular to the surface of the sample, and the outer surface of the blade has an inclined surface inclined from the inner surface. 請求項２または３に記載の試料ホルダにおいて、
前記試料切断部が前記支持部から突き出ている高さは、前記被測定材料の厚さよりも高い、試料ホルダ。 The sample holder according to claim 2 or 3,
A height at which the sample cutting part protrudes from the support part is a sample holder higher than a thickness of the material to be measured. 請求項１に記載の試料ホルダにおいて、
前記刃の内面に、前記試料を保持するための突起を有する、試料ホルダ。 The sample holder according to claim 1,
A sample holder having a projection for holding the sample on an inner surface of the blade. 請求項１に記載の試料ホルダにおいて、
前記刃は、前記刃の内面が前記刃の先端から奥に行くほど前記中空部の断面が大きくなる逆テーパー形状に形成された逆テーパー部と、前記逆テーパー部の奥に設けられた窪みと、を有する、試料ホルダ。 The sample holder according to claim 1,
The blade has a reverse taper portion formed in a reverse taper shape in which the cross section of the hollow portion increases as the inner surface of the blade goes from the tip of the blade to the back, and a recess provided in the back of the reverse taper portion A sample holder. ガス拡散係数計測装置であって、
ガスセンサと、
前記ガスセンサと連通する開口部を有するホルダ保持部と、
前記ホルダ保持部の前記開口部を覆うように配置される請求項１〜６のいずれか一項に記載の試料ホルダと、
を備え、
前記試料ホルダは、前記中空部に保持された試料及び前記開口部を介してのみ前記試料ホルダの外部のガスが前記ガスセンサに到達可能な状態に配置されている、ガス拡散係数計測装置。 A gas diffusion coefficient measuring device,
A gas sensor;
A holder holding portion having an opening communicating with the gas sensor;
The sample holder according to any one of claims 1 to 6, which is arranged so as to cover the opening of the holder holding part,
With
The gas diffusion coefficient measuring device, wherein the sample holder is arranged in a state in which a gas outside the sample holder can reach the gas sensor only through the sample held in the hollow portion and the opening.
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