JP3671092B2

JP3671092B2 - Thermocouple support structure

Info

Publication number: JP3671092B2
Application number: JP26625396A
Authority: JP
Inventors: 治幸花島
Original assignee: Ahresty Corp
Current assignee: Ahresty Corp
Priority date: 1996-10-07
Filing date: 1996-10-07
Publication date: 2005-07-13
Anticipated expiration: 2016-10-07
Also published as: JPH10111179A

Description

【０００１】
【発明の属する技術分野】
本発明は、金型等の被測定物に穿ち形成された測定用穴内に熱電対を挿入装着して温度を測定するようにした温度測定装置における熱電対の支持構造に関するものである。
ちなみに本発明で熱電対とは、シース熱電対やシース測温抵抗体等を言う。
【０００２】
【従来の技術】
本発明に近い技術として、実開昭６０−１０２６４０号公報に開示されたところの熱電対の支持構造がある。このものは、図６に示したごとく、熱電対Ｃの測温部側Ｃ₁に固着されたストッパー（イ）と被測定物Ａに形成された測定用穴Ｂの口縁に螺合止着される穴あきボルト（ロ）との間に弾発バネ（ハ）を介設することにより熱電対Ｃの測温部先端が測定用穴Ｂの突端Ｂ’に付勢当接するように構成されている。
この様な構成とすることにより、被測定物が振動したり熱膨張しても熱電対の測温部先端が測定用穴の突端に常時当接しているため安定して測定できる利点はあるものの、穴あきボルトを測定用穴に螺合止着しなければならないので、熱電対の装着・取り外しに手間取る不具合があった。
【０００３】
【発明が解決しようとする課題】
本発明はこの様な従来の不具合に鑑みてなされたものであり、被測定物が振動したり熱膨張しても安定した測定が出来ることは勿論のこと、熱電対を被測定物の測定用穴に簡便にワンタッチで装着・取り外すことが出来ると共に、測定用穴口縁からの出っ張り寸法を小さく抑えることが出来、且つ深さの異なる測定用穴に対しても簡便に対応することが可能な熱電対の支持構造を提供せんとするものである。
【０００４】
【課題を解決するための手段】
斯る目的を達成する本発明の請求項１記載の熱電対の支持構造は、被測定物に穿設された測定用穴内に配置される熱電対の測温部側に固着されたストッパーと上記測定用穴の口縁に止着される止着具との間に弾発バネを介設することにより熱電対の測温部先端を上記測定用穴の突端に付勢当接せしめるようにした熱電対の支持構造であって、前記止着具が、弾性を有する１枚の金属板で互いにほぼ平行な細長板状部とこれら細長板状部を連結する当接支持部とで側面視略コ字形状に形成され、上記当接支持部に前記熱電対を貫挿通させるための挿通穴を開設し、上記細長板状部には前記測定用穴の口縁内側に係合掛止される掛止片を突設すると共に該細長板状部において前記測定用穴の外部に突出する側を指で摘んで操作ための操作摘み部となした事を特徴としたものである。
この際、前記止着具の操作摘み部を、前記測定用穴口縁の内径より大きく形成することが好ましい。
また、本発明の請求項３記載の熱電対の支持構造は、前記ストッパーが、弾性を有する金属線で内径が熱電対の外径より少し小径なコイル状に形成されると共に当該金属線の両端をコイルの軸方向に折曲して形成された摘み部を有し該摘み部を互いに引き寄せるように摘んでその内径を拡開することにより移動可能なように前記熱電対に嵌挿固着されている事を特徴としたものである。
そして、本発明の請求項４記載の熱電対の支持構造は、前記ストッパーが、弾性を有する細長い１枚の金属板でその両端部が少し内向きに起立形成され中腹部が少し弓なりに形成されると共に上記両端部に挿通穴が形成され該挿通穴にわたって前記熱電対を貫挿通せしめることにより熱電対に対して移動可能なように固着されている事を特徴としたものである。
【０００５】
【発明の実施の形態】
以下、本発明の具体的な実施例を図面に基づいて説明する。
図中、Ａは金型等の温度を測定される被測定物であり、Ｂは被測定物Ａの所要の箇所に穿ち形成された測定用穴であり、Ｃは測定用穴Ｂ内に抜き差し自在に装着される熱電対を示す。
【０００６】
そして、本発明に係る熱電対の支持構造は、被測定物Ａに穿設された測定用穴Ｂ内に配置される熱電対Ｃの測温部側Ｃ₁に固着されたストッパー１と、測定用穴Ｂの口縁に止着される止着具２との間に弾発バネ３を介設することにより、熱電対Ｃの測温部先端を測定用穴Ｂの突端Ｂ’に付勢当接せしめるように構成されている。
【０００７】
ストッパー１は、被測定物Ａの測定用穴Ｂの内径より小径で且つ熱電対Ｃに対して容易に移動が可能なように固着取付けられるものが好ましい。具体的には、図１ないし図３に示した第１実施例のストッパー１は、測定用穴Ｂの内径より小径な略ドーナツ盤形状に形成して熱電対Ｃの測温部側Ｃ₁外周に移動自由に嵌挿せしめ、固定用小ネジ１１でもって固着取付けるようにしたものである。
【０００８】
また、図４に示した第２実施例のストッパー１は、弾性を有する１本の金属線を用いて、その内径が熱電対Ｃの外径より少し小径となるコイル状に形成すると共に、当該金属線の両端部をそれぞれコイルの軸方向に折り曲げて形成した摘み部１ａ，１ａ’を有してなり、使用に際して熱電対Ｃの測温部側Ｃ₁外周に嵌挿せしめ、両端の摘み部１ａ，１ａ’を互いに引き寄せるように摘んでその内径を少し拡開することにより熱電対Ｃに対して移動可能となり、摘み部１ａ，１ａ’を離すと周方向にはたらく収縮力により移動不能な状態に固着するように構成したものである。
【０００９】
更に、図５に示した第３実施例のストッパー１は、弾性を有する細長い１枚の金属板を用いて、その両端部１ｂ，１ｂ’が少し内向きに起立形成され中腹部が上方に少し弓なりに反らし形成されると共に、上記両端起立部１ｂ，１ｂ’には挿通穴１ｃ，１ｃ’を開口形成してなり、両端起立部１ｂ，１ｂ’に形成した挿通穴１ｃ，１ｃ’にわたって熱電対Ｃの測温部側Ｃ₁を貫挿通せしめることにより、金属板が有する弾性作用を利用して熱電対Ｃに対して移動が可能なように固着取付けたものである。即ち、この第３実施例のストッパー１は、いわゆる自在鉤とほぼ同様の原理でもって、両端起立部１ｂ，１ｂ’のどちらか一方の内側を外側方に押圧すると、押圧した方向へ移動するようになっている。
【００１０】
止着具２は、弾性を有する細長い１枚の金属板を用いて、互いにほぼ平行な細長板状部２ｂ，２ｂとこれら細長板状部２ｂ，２ｂを連結する当接支持部２ａとで側面視略コ字形状に折曲形成され、その当接支持部２ａには熱電対Ｃを貫挿通させるための挿通穴２１が開口形成され、細長板状部２ｂ，２ｂには測定用穴Ｂの口縁内側に形成せしめた係合溝Ｂ”に係合掛止される掛止片２２，２２が外側へ向け切り起こして突設されると共に、この細長板状部２ｂ，２ｂにおいて測定用穴Ｂの外部に突出する側を、指で摘んで操作するための操作摘み部２３，２３となしてなる。
【００１１】
この時、止着具２の細長板状部２ｂ，２ｂは、図示実施例の如く、当接支持部２ａに連なる部分から全体を外側方へ少し拡開させると共に、掛止片２２，２２より先の部分を更に少し外側方へ折り曲げ拡開させることが好ましい。そうすれば、掛止片２２，２２が測定用穴Ｂの係合溝Ｂ”に確実に掛け止めされ且つ容易に掛け外すことができるようになる。
尚、測定用穴Ｂ口縁の内側に形成せしめる係合溝Ｂ”としては、例えば雌ネジを形成すれば良い。
【００１２】
また、止着具２の細長板状部２ｂ，２ｂに形成する操作摘み部２３，２３は、指で摘み操作しやすいように、略円形状に形成すると共に、被測定物Ａに形成せしめた測定用穴Ｂ口縁の内径よりも少し大きく形成する。
【００１３】
而して、熱電対Ｃを被測定物Ａの測定用穴Ｂ内に装着する場合には、熱電対Ｃの測温部側Ｃ₁にストッパー１を取付けると共に、止着具２の挿通穴２１に熱電対Ｃを貫挿通せしめ、ストッパー１と止着具２（の当接支持部２ａ）の間に弾発バネ３を介在設置させる。
そして、熱電対Ｃの測温部側Ｃ₁を測定用穴Ｂ内に挿入させ、止着具２の操作摘み部２３，２３を指で摘んで止着具２を測定用穴Ｂに押し込み、その後止着具２の操作摘み部２３，２３から指を離す。すると、止着具２の掛止片２２，２２が測定用穴Ｂの内側口縁に形成せしめた係合溝Ｂ”に係合掛止されると共に、熱電対Ｃの測温部先端が測定用穴Ｂの突端Ｂ’に付勢当接し、熱電対Ｃが被測定物Ａの測定用穴Ｂ内に装着支持される。
この時、熱電対Ｃの付勢力は、弾発バネ３の長さを変えるかバネ力を変えることにより調整可能であるが、弾発バネ３が一定の場合には、ストッパー１を熱電対Ｃの軸方向に移動させて止着具２に対する距離を変化させることによっても調節可能である。
【００１４】
また、熱電対Ｃを被測定物Ａの測定用穴Ｂから取り外す場合には、止着具２の操作摘み部２３，２３を指で摘んで止着具２の掛止片２２，２２を測定用穴Ｂの係合溝Ｂ”から掛け外すと、弾発バネ３の弾発力により止着具２が測定用穴Ｂから押し出されてくるので、そのまま熱電対Ｃを被測定物Ａの測定用穴Ｂから引き抜けば良い。
【００１５】
【発明の効果】
本発明に係る熱電対の支持構造は斯様に構成したので、下記の効果を奏する。
▲１▼ 熱電対の測温部先端が被測定物の測定用穴の突端に常時付勢当接しているので、被測定物が振動したり熱膨張しても安定した測定が出来る。
▲２▼ 測定用穴の口縁に止着される止着具を弾性を有する金属板で側面視略コ字形状に形成し、その当接支持部に熱電対を貫挿通させ細長板状部に前記測定用穴の口縁内側に係合掛止される掛止片を突設すると共に該細長板状部において測定用穴の外部に突出する側を指で摘むための操作摘み部となしたので、熱電対を測定用穴に簡便にワンタッチで装着・取り外すことが出来る。
▲３▼ 上記止着具が測定用穴の口縁に止着されると、測定用穴の外に出っ張る部分は、指で摘んで操作するための操作部だけであるため、被測定物の測定用穴口縁からの出っ張り寸法を、従来の穴あきボルトを止着具として用いた場合よりも小さくすることが出来る。
▲４▼ 上記止着具及びストッパーの構造は頗る簡単であり、プレス加工等により容易に製造することが出来るので、安価に提供することが出来る。
▲５▼ ストッパーを熱電対に対して、格別な工具を使用せずともワンタッチ移動させることが出来、よって深さの異なる測定用穴に対しても簡便に対応することが可能となる。
【図面の簡単な説明】
【図１】本発明に係る熱電対の支持構造の実施の一例を示す断面図。
【図２】同要部の拡大断面図。
【図３】同要部の斜視図。
【図４】本発明に係るストッパーの第２実施例を示す斜視図。
【図５】本発明に係るストッパーの第３実施例を示す斜視図。
【図６】従来例を示す断面図。
【符号の説明】
Ａ………被測定物Ｂ………測定用穴
Ｃ………熱電対Ｃ₁……測温部側
１………ストッパー１ａ，１ａ’…摘み部
１ｂ，１ｂ’…両端起立部１ｃ，１ｃ’…挿通穴
２………止着具
２ａ……当接支持部２ｂ……細長板状部
２１……挿通穴２２……掛止片
２３……操作摘み部
３………弾発バネ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermocouple support structure in a temperature measuring apparatus in which a thermocouple is inserted and mounted in a measurement hole formed in a measurement object such as a mold to measure the temperature.
Incidentally, the thermocouple in the present invention refers to a sheath thermocouple, a sheath resistance thermometer, and the like.
[0002]
[Prior art]
As a technique close to the present invention, there is a thermocouple support structure disclosed in Japanese Utility Model Laid-Open No. 60-102640. As shown in FIG. 6, the stopper (A) fixed to the temperature measuring part side C ₁ of the thermocouple C and the rim of the measurement hole B formed in the object A to be measured are screwed and fastened. The tip of the temperature measuring section of the thermocouple C is configured to be in urging contact with the protruding end B ′ of the measuring hole B by interposing a spring (c) between the perforated bolt (b). ing.
Such a configuration has the advantage that even if the object to be measured vibrates or thermally expands, the tip of the temperature measuring portion of the thermocouple is always in contact with the tip of the hole for measurement, so that measurement can be performed stably. Since the perforated bolt must be screwed into the measurement hole, there is a problem that it takes time to mount and remove the thermocouple.
[0003]
[Problems to be solved by the invention]
The present invention has been made in view of such conventional problems, and it is possible to perform stable measurement even when the object to be measured vibrates or thermally expands, and a thermocouple is used for measuring the object to be measured. Thermoelectrics that can be easily attached to and removed from the hole with a single touch, can keep the protruding dimension from the hole edge of the measurement hole small, and can easily accommodate measurement holes of different depths. It is intended to provide a paired support structure.
[0004]
[Means for Solving the Problems]
The thermocouple support structure according to claim 1 of the present invention that achieves such an object includes a stopper fixed to a temperature measuring portion side of a thermocouple disposed in a measurement hole drilled in an object to be measured, and the above-described structure. A resilient spring is interposed between the fastening hole fastened to the rim of the measurement hole so that the tip of the temperature measuring part of the thermocouple is urged into contact with the tip of the measurement hole. It is a thermocouple support structure, and the fastening device is an elongated plate-like portion that is substantially parallel to each other by a single metal plate having elasticity, and a contact support portion that connects these elongated plate-like portions, in a side view. It is formed in a U-shape, and an insertion hole for allowing the thermocouple to pass through is formed in the abutting support portion, and the elongated plate-like portion is engaged and locked inside the lip of the measurement hole. An operation knob for projecting a latching piece and gripping the side of the elongated plate-like portion protruding outside the measurement hole with a finger; It is obtained by the features that it has.
At this time, it is preferable that the operation knob of the fastener is formed larger than the inner diameter of the measurement hole opening edge.
Further, in the thermocouple support structure according to claim 3 of the present invention, the stopper is formed of a metal wire having elasticity, the inner diameter of which is slightly smaller than the outer diameter of the thermocouple, and both ends of the metal wire. The knob has a knob formed by bending it in the axial direction of the coil. It is characterized by being.
In the thermocouple support structure according to claim 4 of the present invention, the stopper is formed of an elastic long and thin metal plate, and both end portions thereof are erected inward slightly and the middle abdomen is formed in a slightly bow shape. In addition, insertion holes are formed at both ends, and the thermocouple is inserted through the insertion holes so as to be fixed to be movable with respect to the thermocouple.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
In the figure, A is an object to be measured for temperature such as a mold, B is a measurement hole formed at a required position of the object to be measured A, and C is inserted into and removed from the measurement hole B. The thermocouple attached freely is shown.
[0006]
The thermocouple support structure according to the present invention includes a stopper 1 fixed to a temperature measuring portion side C ₁ of a thermocouple C disposed in a measurement hole B drilled in a measured object A, and a measurement. The tip of the temperature measuring part of the thermocouple C is biased to the protruding end B ′ of the measuring hole B by interposing the elastic spring 3 between the fixing tool 2 fixed to the edge of the hole B for measuring. It is comprised so that it may contact | abut.
[0007]
The stopper 1 is preferably one that is smaller than the inner diameter of the measurement hole B of the object to be measured A and that is fixedly attached so as to be easily movable with respect to the thermocouple C. Specifically, the stopper 1 of the first embodiment shown in FIGS. 1 to 3 is formed in a substantially donut board shape smaller in diameter than the inner diameter of the measurement hole B, and the outer periphery of the thermocouple C on the temperature measuring portion side C _1. It can be freely inserted into and fixedly attached with a fixing small screw 11.
[0008]
Further, the stopper 1 of the second embodiment shown in FIG. 4 is formed in a coil shape whose inner diameter is slightly smaller than the outer diameter of the thermocouple C, using a single metal wire having elasticity. both end portions of the knob portion 1a formed by bending in the axial direction of each coil of metal wire, it has a 1a ', tighten fitting let the temperature measuring portion C ₁ outer periphery of the thermocouple C in use, the knob portion at both ends 1a and 1a 'are pulled so as to pull each other and the inner diameter thereof is slightly expanded to allow movement relative to the thermocouple C. When the knobs 1a and 1a' are released, they cannot move due to the contraction force acting in the circumferential direction. It is comprised so that it may adhere to.
[0009]
Further, the stopper 1 of the third embodiment shown in FIG. 5 uses a single long and thin elastic metal plate, and its both end portions 1b and 1b 'are erected slightly inward so that the middle abdomen is slightly upward. In addition to being warped in the shape of a bow, the both-end standing portions 1b and 1b ′ are formed with opening holes 1c and 1c ′, and the thermocouples extend through the insertion holes 1c and 1c ′ formed in the both-end standing portions 1b and 1b ′. It is fixedly attached so as to be movable with respect to the thermocouple C by using the elastic action of the metal plate by allowing the temperature measuring section side C ₁ of C to penetrate. That is, the stopper 1 according to the third embodiment is moved in the pressed direction when the inner side of either one of the both end raised portions 1b and 1b 'is pressed outward on the basis of a principle that is almost the same as a so-called free rod. It has become.
[0010]
The fastening device 2 is formed by using a long and thin metal plate having elasticity, and has side surfaces that are formed by elongated plate-like portions 2b and 2b that are substantially parallel to each other and a contact support portion 2a that connects the elongated plate-like portions 2b and 2b. The contact support portion 2a is formed with an insertion hole 21 through which the thermocouple C is inserted, and the elongated plate-like portions 2b and 2b are provided with a measurement hole B. Latching pieces 22 and 22 engaged and latched in an engagement groove B ″ formed on the inner side of the lip are cut and raised outward, and a measuring hole is formed in the elongated plate-like portions 2b and 2b. The side protruding to the outside of B is made up of operation knobs 23 and 23 for picking and operating with fingers.
[0011]
At this time, the elongated plate-like portions 2b, 2b of the fastening device 2 are slightly expanded outward from the portion connected to the abutting support portion 2a as in the illustrated embodiment, and from the latching pieces 22, 22. It is preferable to fold and expand the previous portion slightly outward. Then, the latching pieces 22 and 22 are securely latched in the engagement groove B ″ of the measurement hole B and can be easily detached.
For example, a female screw may be formed as the engagement groove B ″ formed inside the edge of the measurement hole B.
[0012]
Further, the operation knobs 23 and 23 formed on the elongated plate-like parts 2b and 2b of the fastener 2 are formed in a substantially circular shape so as to be easily picked with a finger and formed on the object A to be measured. It is formed slightly larger than the inner diameter of the edge of the measurement hole B.
[0013]
Thus, when the thermocouple C is mounted in the measurement hole B of the object A to be measured, the stopper 1 is attached to the temperature measuring portion side C ₁ of the thermocouple C and the insertion hole 21 of the fastener 2 is attached. The thermocouple C is inserted through the elastic spring C, and the elastic spring 3 is interposed between the stopper 1 and the fastening device 2 (the contact support portion 2a thereof).
Then, the temperature measuring part side C ₁ of the thermocouple C is inserted into the measurement hole B, the operation knobs 23 and 23 of the fastening tool 2 are gripped with fingers, and the fastening tool 2 is pushed into the measurement hole B, Thereafter, the finger is released from the operation knobs 23 and 23 of the fastening tool 2. Then, the latching pieces 22, 22 of the fastening tool 2 are engaged and latched in the engagement groove B ″ formed at the inner edge of the measurement hole B, and the tip of the temperature measuring part of the thermocouple C is measured. The thermocouple C is mounted and supported in the measurement hole B of the object A to be measured, while being urged against the protruding end B ′ of the hole B.
At this time, the urging force of the thermocouple C can be adjusted by changing the length of the elastic spring 3 or changing the spring force. However, when the elastic spring 3 is constant, the stopper 1 is attached to the thermocouple C. It can also be adjusted by changing the distance to the fastener 2 by moving in the axial direction.
[0014]
Further, when the thermocouple C is removed from the measurement hole B of the object A to be measured, the operation knobs 23 and 23 of the fastener 2 are grasped with fingers, and the latch pieces 22 and 22 of the fastener 2 are measured. When the fastening tool 2 is pushed out of the measurement hole B by the elastic force of the elastic spring 3 when it is disengaged from the engagement groove B ″ of the use hole B, the thermocouple C is directly measured on the object A to be measured. It can be pulled out from the hole B.
[0015]
【The invention's effect】
Since the support structure of the thermocouple according to the present invention is configured as described above, the following effects are obtained.
(1) Since the tip of the thermometer's temperature measuring part is always in urging contact with the tip of the measurement hole of the object to be measured, stable measurement can be performed even if the object to be measured vibrates or thermally expands.
(2) A fastening device to be fastened to the rim of the measurement hole is formed in a substantially U shape in a side view with a metal plate having elasticity, and an elongated plate-like portion is formed by inserting a thermocouple through the contact support portion. A latching piece that is engaged and latched on the inner side of the lip of the measurement hole is provided, and an operation knob for picking the side of the elongated plate-like portion protruding outside the measurement hole with a finger is provided. Therefore, the thermocouple can be easily attached to and detached from the measurement hole with one touch.
(3) When the fastening tool is fastened to the edge of the measurement hole, the only part that protrudes from the measurement hole is an operation part for picking and operating with a finger. The protruding dimension from the edge of the hole for measurement can be made smaller than when a conventional perforated bolt is used as a fastener.
(4) The structure of the fastening device and the stopper is very simple and can be easily manufactured by pressing or the like, so that it can be provided at low cost.
(5) The stopper can be moved one-touch with respect to the thermocouple without using a special tool. Therefore, it is possible to easily cope with measurement holes having different depths.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an example of a thermocouple support structure according to the present invention.
FIG. 2 is an enlarged sectional view of the main part.
FIG. 3 is a perspective view of the main part.
FIG. 4 is a perspective view showing a second embodiment of the stopper according to the present invention.
FIG. 5 is a perspective view showing a third embodiment of the stopper according to the present invention.
FIG. 6 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
A ......... measured object B ......... measuring hole C ......... thermocouple C ₁ ...... temperature measuring portion 1 ......... stopper 1a, 1a '... knob portion 1b, 1b' ... both end upright portion 1c, 1c '... insertion hole 2 ... fastener 2a ... abutting support 2b ... elongated plate-like part 21 ... insertion hole 22 ... holding piece 23 ... control knob 3 ...... elastic spring

Claims

A resilient spring between a stopper fixed to the temperature measuring portion side of a thermocouple disposed in a measurement hole drilled in the object to be measured and a fastening device fixed to the lip of the measurement hole A thermocouple support structure in which the tip of the thermocouple of the thermocouple is urged against and brought into contact with the protruding end of the measurement hole. The metal plate is formed in a substantially U shape in a side view by an elongated plate-like portion that is substantially parallel to each other and an abutting support portion that connects the elongated plate-like portions. An insertion hole is provided on the elongated plate-like portion, and a latching piece is provided on the inner side of the lip of the measurement hole. A thermocouple support structure characterized in that it is an operation knob for operating the protruding side with a finger.

The thermocouple support structure according to claim 1, wherein an operation knob portion of the fastening tool is formed to be larger than an inner diameter of a hole edge for measurement.

A resilient spring between a stopper fixed to the temperature measuring portion side of a thermocouple disposed in a measurement hole drilled in the object to be measured and a fastening device fixed to the lip of the measurement hole The thermocouple support structure is configured such that the tip of the thermocouple's temperature measuring portion is urged against and abutted against the protruding end of the measurement hole by interposing the stopper. The coil is formed in a coil shape slightly smaller than the outer diameter of the thermocouple, and has a knob formed by bending both ends of the metal wire in the axial direction of the coil. A thermocouple support structure, wherein the thermocouple is fitted and fixed to the thermocouple so as to be movable by expanding an inner diameter.

A resilient spring between a stopper fixed to the temperature measuring portion side of a thermocouple disposed in a measurement hole drilled in the object to be measured and a fastening device fixed to the lip of the measurement hole A thermocouple support structure in which the tip of the thermocouple temperature-measurement portion is urged against and abutted against the protruding end of the measurement hole, and the stopper is a single elongated metal having elasticity. Both ends of the plate stand up slightly inward and the middle abdomen is slightly bowed, and insertion holes are formed in the both ends, and the thermocouple is inserted through the insertion holes. Thermocouple support structure characterized by being fixed so as to be movable.