JPH08297107A - Apparatus for thermomechanical analysis - Google Patents
Apparatus for thermomechanical analysisInfo
- Publication number
- JPH08297107A JPH08297107A JP15351596A JP15351596A JPH08297107A JP H08297107 A JPH08297107 A JP H08297107A JP 15351596 A JP15351596 A JP 15351596A JP 15351596 A JP15351596 A JP 15351596A JP H08297107 A JPH08297107 A JP H08297107A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- detection rod
- load
- spring
- coil
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、試料を加熱し適
当な荷重を加えてこの試料の熱的変化に伴う効果を測定
する熱機械分析装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermomechanical analyzer for heating a sample and applying an appropriate load to measure the effect of the sample due to a thermal change.
【０００２】[0002]
【従来の技術】熱機械分析装置では、検出棒を試料に直
接接触させて加熱し該試料の寸法変化等を測定するよう
になっている。2. Description of the Related Art In a thermomechanical analyzer, a detection rod is brought into direct contact with a sample to be heated to measure a dimensional change or the like of the sample.
【０００３】このような熱機械分析装置の検出棒の支持
方式としては、ビームの一端に検出棒を付け他端にはカ
ウンターウエイトを付ける天秤機構を利用したものがあ
る。この天秤機構を利用した熱機械分析装置では検出
棒、差動トランスコア及びフォースコイルを付加した状
態で天秤の平衡を取り、試料の変更及び設置は試料支持
管を上下に移動させて行っている。As a method of supporting the detection rod of such a thermomechanical analyzer, there is a method of using a balance mechanism in which a detection rod is attached to one end of the beam and a counterweight is attached to the other end. In the thermomechanical analyzer using this balance mechanism, the balance is balanced with the detection rod, differential transformer core, and force coil added, and the sample support tube is moved up and down to change and install the sample. .
【０００４】[0004]
【発明が解決しようとする課題】天秤方式による熱機械
分析装置では、天秤平衡の状態で試料を設置しているの
で試料を変更する際には試料支持管を主動若しくはモー
タによって移動させている。所でフォースコイルに電流
を流し発生する荷重で検出棒を移動させて試料を変更す
る方法も考えられるが、仮にフォースコイルによる荷重
で検出棒を移動させようとしても適当な位置に検出棒を
停止させることは困難であり、また移動速度を調節する
ことも困難である。In the thermomechanical analyzer of the balance type, since the sample is installed in the balance equilibrium state, when changing the sample, the sample support tube is moved by the driving or the motor. It is possible to change the sample by moving the detection rod with the load generated by passing an electric current through the force coil at some place, but even if you try to move the detection rod with the load from the force coil, the detection rod is stopped at an appropriate position. It is difficult to make it possible, and it is also difficult to adjust the moving speed.
【０００５】この発明はかかる課題を解決するためにな
されたものである。The present invention has been made to solve the above problems.
【０００６】[0006]
【課題を解決するための手段】即ち、この発明は、一端
を試料に接触させ且つ永久磁石と相互作用するフォース
コイル及び差動トランスコアを取付けた検出棒と、該検
出棒を上方又は下方に付勢する弾性手段と、分析時に該
検出棒が上方に付勢されるよう該弾性手段を取付けた固
定ブロックであって永久磁石及び差動トランスコイルを
固定したものとを備え、前記フォースコイルと永久磁石
の作用により前記検出棒を上方に移動させ、前記弾性手
段の付勢力とつりあわせることで前記検出棒を停止させ
る手段を備えたことを特徴とする。SUMMARY OF THE INVENTION That is, according to the present invention, a detection rod having a force coil and a differential transformer core, one end of which contacts the sample and which interacts with a permanent magnet, and a detection rod mounted above or below the detection rod. An elastic means for urging and a fixed block to which the elastic means is attached so that the detection rod is urged upward during analysis, to which a permanent magnet and a differential transformer coil are fixed, and the force coil A means for stopping the detection rod by moving the detection rod upward by the action of a permanent magnet and balancing it with the urging force of the elastic means is provided.
【０００７】[0007]
【発明の実施の形態】以下、この発明の具体的実施例に
ついて図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings.
【０００８】図１はこの発明にかかる熱機械分析装置の
実施例の縦断面図である。この図において１は検出棒で
あって下端部は試料Ｍに接触させる。２はバネであって
一方は検出棒１の上端に接続し他方は固定ブロック10に
接続する。３は検出棒１に付加したフォースコイル、４
は永久磁石であって該フォースコイル３に電流を流しこ
れらの相互作用により検出棒１を介して試料Ｍに圧縮、
引張荷重を加えるようになっている。FIG. 1 is a vertical sectional view of an embodiment of a thermomechanical analyzer according to the present invention. In this figure, reference numeral 1 is a detection rod, the lower end of which contacts the sample M. Reference numeral 2 denotes a spring, one of which is connected to the upper end of the detection rod 1 and the other of which is connected to the fixed block 10. 3 is a force coil added to the detection rod 1, 4
Is a permanent magnet, and an electric current is applied to the force coil 3 to compress the sample M through the detection rod 1 by the interaction of these.
It is designed to apply a tensile load.
【０００９】５は検出棒１に連結した差動トランスコイ
ル、６は差動トランスコアであり該差動トランスコア６
の移動によって試料Ｍの長さ変化を検出する。７は試料
支持管であって底に試料Ｍを設置し、電気炉８で加熱す
る。Reference numeral 5 is a differential transformer coil connected to the detection rod 1, and 6 is a differential transformer core.
The change in the length of the sample M is detected by the movement of. Reference numeral 7 is a sample support tube, and the sample M is installed on the bottom and heated in an electric furnace 8.
【００１０】以上の説明から明らかなように、検出棒１
とフォースコイル３と差動トランスコア６は一体となっ
てバネ２に吊られているが、通常試料を加熱しない状態
ではこれらの荷重は試料Ｍにかからないよう平衡状態に
してある。そして上記するようにフォースコイル３に電
流を流すと該フォースコイル３と永久磁石４との相互作
用により試料Ｍに適当な荷重がかかるようになってい
る。また、熱分析の際は試料Ｍは電気炉８で加熱された
試料長が変化するが、この変化量は直ちに差動トランス
コア６及び差動トランスコイル５の電気信号の変化とし
て検出され、その変化量によって試料Ｍの膨脹係数等を
物理量を知ることが出来る。尚、９はマイクロメータで
あって試料長の測定やブロック10を介して検出棒１を手
動で移動することが出来るようにしたものである。As is clear from the above description, the detection rod 1
While the force coil 3 and the differential transformer core 6 are integrally suspended by the spring 2, the load is normally balanced so that the load is not applied to the sample M when the sample is not heated. When a current is applied to the force coil 3 as described above, an appropriate load is applied to the sample M by the interaction between the force coil 3 and the permanent magnet 4. In the thermal analysis, the sample length of the sample M heated in the electric furnace 8 changes, and the amount of change is immediately detected as a change in the electric signal of the differential transformer core 6 and the differential transformer coil 5, and The physical quantity such as the expansion coefficient of the sample M can be known from the change amount. The reference numeral 9 designates a micrometer, which is capable of measuring the sample length and manually moving the detection rod 1 through the block 10.
【００１１】この発明にかかる熱機械分析装置の構成は
以上のようになっているが、次に試料変更の操作につい
て説明する。The structure of the thermomechanical analyzer according to the present invention is as described above. Next, the operation for changing the sample will be described.
【００１２】図２及び図３は試料変更の際の様子を示す
この発明にかかる熱機械分析装置の縦断面の簡略図であ
る。図２に示されるように、フォースコイル３には電流
を流さず荷重をゼロの状態とし、この時のバネ２の長さ
をＬ0 とする。FIGS. 2 and 3 are simplified vertical cross-sectional views of the thermomechanical analyzer according to the present invention, showing how the sample is changed. As shown in FIG. 2, no force is applied to the force coil 3 and the load is zero, and the length of the spring 2 at this time is L 0 .
【００１３】次に、図３においてフォースコイル３に電
流を流し上向きにΔＦの力が生じるようにする。この時
のバネ２の長さをＬ1 とする。従ってバネ定数をｋとす
ると、 ΔＦ＝−ｋ（Ｌ1 −Ｌ0 ）となり、フォースコ
イル３の荷重ΔＦを適当な値で増加させることにより、
適当な位置で検出棒１を停止させることが出来る。こう
して試料変更後は再びΔＦをゼロに戻してやれば、図２
に示すような試料Ｍと検出棒１とが無負荷の状態で接触
する状態に戻すことが出来る。Next, in FIG. 3, a current is passed through the force coil 3 so that a force of ΔF is generated in the upward direction. The length of the spring 2 at this time is L 1 . Therefore, assuming that the spring constant is k, ΔF = −k (L 1 −L 0 ), and by increasing the load ΔF of the force coil 3 by an appropriate value,
The detection rod 1 can be stopped at an appropriate position. In this way, if ΔF is returned to zero after changing the sample,
It is possible to return to the state where the sample M and the detection rod 1 are in contact with each other under no load as shown in FIG.
【００１４】この発明の一実施例は以上のようである
が、上記バネ２はコイルバネとしたがコイルバネに限ら
ず空気バネ或いは板バネ等他の付勢手段であっても良
い。また、取付け位置も上端に限らず検出棒１の途中か
ら固定ブロック10に係止するようにしても良い。Although one embodiment of the present invention is as described above, the spring 2 is a coil spring, but the spring 2 is not limited to a coil spring, and may be another biasing means such as an air spring or a leaf spring. Further, the mounting position is not limited to the upper end but may be locked to the fixed block 10 from the middle of the detection rod 1.
【００１５】[0015]
【発明の効果】この発明にかかる熱機械分析装置は以上
詳述したような構成としたので、本来試料を分析する際
適当な荷重を試料に付加する役割をもったフォースコイ
ルを試料変更用及び試料設置のために利用することが出
来る。従って試料の変更、設置等のスピードアップ並び
に操作性を飛躍的に向上させることが可能となる。Since the thermomechanical analyzer according to the present invention is constructed as described in detail above, a force coil for originally changing the sample is used to change the sample when an appropriate load is applied to the sample when the sample is analyzed. It can be used for sample installation. Therefore, it becomes possible to dramatically improve the operability and speed up of the sample change and installation.
【図１】この発明にかかる熱機械分析装置の実施例の縦
断面図である。FIG. 1 is a vertical sectional view of an embodiment of a thermomechanical analyzer according to the present invention.
【図２】この発明にかかる熱機械分析装置の縦断面の簡
略図で試料変更の際の様子を示す図である。FIG. 2 is a simplified vertical cross-sectional view of a thermomechanical analyzer according to the present invention, showing how a sample is changed.
【図３】この発明にかかる熱機械分析装置の縦断面の簡
略図で試料変更の際の様子を示す図である。FIG. 3 is a simplified vertical cross-sectional view of a thermomechanical analyzer according to the present invention, showing how a sample is changed.
１…検出棒 ２…バネ ３…フォースコイル ４…永久磁石 ５…差動トランスコイル ６…差動トラ
ンスコア ７…試料支持管 ８…加熱炉 ９…マイクロメータ 10…固定ブロ
ックDESCRIPTION OF SYMBOLS 1 ... Detection rod 2 ... Spring 3 ... Force coil 4 ... Permanent magnet 5 ... Differential transformer coil 6 ... Differential transformer core 7 ... Sample support tube 8 ... Heating furnace 9 ... Micrometer 10 ... Fixed block
Claims (1)
互作用するフォースコイル及び差動トランスコアを取付
けた検出棒と、該検出棒を上方又は下方に付勢する弾性
手段と、分析時に該検出棒が上方に付勢されるよう該弾
性手段を取付けた固定ブロックであって永久磁石及び差
動トランスコイルを固定したものとを備え、 前記フォースコイルと永久磁石の作用により前記検出棒
を上方に移動させ、前記弾性手段の付勢力とつりあわせ
ることで前記検出棒を停止させる手段を備えたことを特
徴とする熱機械分析装置。1. A detection rod having a force coil and a differential transformer core, one end of which is brought into contact with a sample and interacting with a permanent magnet, an elastic means for urging the detection rod upward or downward, and an elastic means for analysis. A fixed block to which the elastic means is attached so that the detection rod is biased upward, and a permanent magnet and a differential transformer coil are fixed, and the detection rod is moved upward by the action of the force coil and the permanent magnet. And a means for stopping the detection rod by balancing with the urging force of the elastic means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15351596A JP2950238B2 (en) | 1996-06-14 | 1996-06-14 | Thermomechanical analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15351596A JP2950238B2 (en) | 1996-06-14 | 1996-06-14 | Thermomechanical analyzer |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1197882A Division JPH0769282B2 (en) | 1989-07-29 | 1989-07-29 | Thermomechanical analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08297107A true JPH08297107A (en) | 1996-11-12 |
| JP2950238B2 JP2950238B2 (en) | 1999-09-20 |
Family
ID=15564231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15351596A Expired - Fee Related JP2950238B2 (en) | 1996-06-14 | 1996-06-14 | Thermomechanical analyzer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2950238B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100479689B1 (en) * | 2002-08-09 | 2005-03-30 | 한국과학기술연구원 | Thermomechanical analyzer |
-
1996
- 1996-06-14 JP JP15351596A patent/JP2950238B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100479689B1 (en) * | 2002-08-09 | 2005-03-30 | 한국과학기술연구원 | Thermomechanical analyzer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2950238B2 (en) | 1999-09-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |