JPH07159248A - Contact type temperature detector - Google Patents
Contact type temperature detectorInfo
- Publication number
- JPH07159248A JPH07159248A JP30615793A JP30615793A JPH07159248A JP H07159248 A JPH07159248 A JP H07159248A JP 30615793 A JP30615793 A JP 30615793A JP 30615793 A JP30615793 A JP 30615793A JP H07159248 A JPH07159248 A JP H07159248A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- coil spring
- measured
- contact portion
- type temperature
- 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.)
- Pending
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、温度測定対象物に接触
して温度を計測する接触型温度検出器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact type temperature detector for contacting an object whose temperature is to be measured and measuring the temperature.
【0002】[0002]
【従来の技術】物体の温度を計測する場合、被測定物に
温度測定器を接触させて計測する方法が多く用いられて
いる。正しく計測するためには十分接触する必要がある
が、走行物の表面温度を計測する場合などでは、あまり
強く押しつけると被接触物を傷つけるなどの支障をきた
す場合もあるので、接触部をばねや支持板等を用いて一
定の力で押しつけるようにしている。また、接触する場
合、被測定物の形状と温度計測器の接触部の形状が適合
する必要があり、測定面の平面、球面等の形状によりセ
ンサ部もこれに対応した形状を有することが必要とな
る。2. Description of the Related Art When measuring the temperature of an object, a method of bringing a temperature measuring device into contact with the object to be measured is often used. In order to measure correctly, it is necessary to make sufficient contact, but when measuring the surface temperature of a moving object, pressing it too hard may cause damage to the contacted object, so contact the contact part with a spring or A support plate or the like is used to press it with a constant force. In case of contact, the shape of the object to be measured and the shape of the contact part of the temperature measuring device must match, and the sensor part must also have a shape corresponding to this, depending on the shape of the measurement surface, such as the plane or spherical surface. Becomes
【0003】図3は従来用いられている接触型温度測定
器の例を示す図である。(a)は温度検出素子11をポ
リイミドの支持板12に取付け、この支持板12をケー
シング14に固定された板ばね13で支持したものであ
る。(b)は温度検出素子11をΩ状の板ばね13に取
付け、この板ばね13の両端をケーシング14に固定し
たものである。FIG. 3 is a diagram showing an example of a conventional contact type temperature measuring device. In (a), the temperature detecting element 11 is attached to a polyimide support plate 12, and the support plate 12 is supported by a leaf spring 13 fixed to a casing 14. In (b), the temperature detecting element 11 is attached to an Ω-shaped leaf spring 13, and both ends of the leaf spring 13 are fixed to the casing 14.
【0004】[0004]
【発明が解決しようとする課題】図3(a)に示す温度
測定器の場合、被測定物の接触面の形状が球面などの突
起状であればよいが、平面の場合温度検出素子11の測
定面への接触が不十分となり、また支持板の反力が大き
く被測定物に強く接触させて損傷を負わせる恐れもあ
る。また(b)の場合、板ばね13を用いているため被
測定物への軽い接触は難しく、さらに、板ばね13は金
属なので走行中の物を測定するときには被測定物に傷が
付き易い。また、被測定物が直線または回転移動してい
る場合、持続的に接触させることは困難である。In the case of the temperature measuring instrument shown in FIG. 3 (a), the contact surface of the object to be measured may be a projection such as a spherical surface, but in the case of a flat surface, the temperature detecting element 11 The contact with the measurement surface becomes insufficient, and the reaction force of the supporting plate is large, which may cause strong contact with the object to be measured, resulting in damage. Further, in the case of (b), since the leaf spring 13 is used, it is difficult to make a light contact with the object to be measured, and further, since the leaf spring 13 is a metal, the object to be measured is easily scratched when measuring the running object. Further, when the object to be measured is linearly or rotationally moved, it is difficult to make continuous contact.
【0005】本発明は上述の問題点に鑑みてなされたも
ので、被測定物、特に走行中の被測定物に対しても軽く
接触することができ、各種の接触面の形状に対応できる
接触面を有する接触型温度検出器を提供することを目的
とする。The present invention has been made in view of the above-mentioned problems, and it is possible to make a light contact with an object to be measured, particularly an object to be measured during traveling, and a contact that can correspond to various shapes of contact surfaces. An object is to provide a contact-type temperature sensor having a surface.
【0006】[0006]
【課題を解決するための手段】上述の目的を達成するた
め、頂部に温度検出素子を有する凸面状の接触部と、一
端で前記接触部に固着しているコイルスプリングと、該
コイルスプリングの他端を固着するとともに該コイルス
プリングを包含してその軸方向に摺動自在に案内するケ
ーシングとを備えたものである。In order to achieve the above-mentioned object, a convex contact portion having a temperature detecting element on the top, a coil spring fixed to the contact portion at one end, and another coil spring And a casing which fixes the ends and includes the coil spring and guides the coil spring slidably in the axial direction.
【0007】また、頂部に温度検出素子を有する凸面状
の接触部と、一端で前記接触部に固着しているベローズ
と、該ベローズの他端を固着するとともに該ベローズを
包含してその軸方向に摺動自在に案内するケーシングと
を備えたものである。Further, a convex contact portion having a temperature detecting element on the top, a bellows fixed to the contact portion at one end, and the other end of the bellows fixed and including the bellows in the axial direction thereof. And a casing for slidably guiding it.
【0008】また、前記接触部の外面に硬質材により薄
膜を蒸着したものである。Further, a thin film is deposited by a hard material on the outer surface of the contact portion.
【0009】[0009]
【作用】接触部は凸面状でその頂部に温度検出素子が設
けられているので、被測定面が平面、または球面等の曲
面であっても温度検出素子は確実に接触し温度を正確に
測定することができる。また、接触部はコイルスプリン
グで支持され、コイルスプリングはその軸方向に摺動自
在にガイドされているので、被測定面に一定の力で押し
付けられる。コイルスプリングはばね定数を所定の値に
設定することが容易にできるので押し付け力を少なくし
た、例えば1〜5gf/mmのばね定数に設定できるの
で被測定面に傷などをつけることなく温度測定ができ
る。[Function] Since the contact portion is convex and the temperature detecting element is provided on the top of the contact portion, the temperature detecting element can surely contact and measure the temperature accurately even if the surface to be measured is a flat surface or a curved surface such as a spherical surface. can do. Further, the contact portion is supported by the coil spring, and the coil spring is slidably guided in the axial direction, so that the contact portion is pressed against the surface to be measured with a constant force. Since the coil spring can easily set the spring constant to a predetermined value, the pressing force is reduced. For example, the spring constant can be set to 1 to 5 gf / mm so that the temperature can be measured without scratching the surface to be measured. it can.
【0010】また、コイルスプリングをベローズにした
場合、ベローズ自体のもばね定数を所定の小さい値に設
定することによりコイルスプリングと同様に押し付け力
を少なくし被測定面に傷等をつけることをなく温度測定
ができる。また、ベローズの場合、ケーシング内部を外
部から遮断できるので内部のリード線やコネクタに塵や
水分が付着するのを防止できる。When the coil spring is a bellows, the spring constant of the bellows itself is set to a predetermined small value so that the pressing force is reduced as in the case of the coil spring and the surface to be measured is not damaged. Can measure temperature. Further, in the case of the bellows, since the inside of the casing can be shielded from the outside, it is possible to prevent dust and water from adhering to the lead wires and the connector inside.
【0011】また、接触部の外面に硬質材で薄膜を蒸着
することにより耐摩耗性が向上し、寿命が延びる。Also, by depositing a thin film of a hard material on the outer surface of the contact portion, the wear resistance is improved and the life is extended.
【0012】[0012]
【実施例】以下、本発明の好ましい実施例を図面を参照
して説明する。図1は本発明の第1実施例の構成を示す
断面図である。(a)は全体の断面を示し、(b)は接
触部の頂部詳細を示す。1は温度検出素子でサーミスタ
や熱電対が用いられる。サーミスタは金属酸化粉末を蒸
着技術を用いて成形焼結して作成することにより小さく
かつ高感度のものを作成することができ小物体の測定も
可能である。従って応答速度が速い。接触部2は部分球
殻2aとこの周囲に鍔状に設けられた鍔部2bからな
り、部分球殻2aの頂部内面に温度検出素子1が取付け
られている。接触部2はポリイミドで構成され、被測定
物への接触面となる外表面にはダイヤモンドライクカー
ボン(DLC)やチッ化チタン(TIN)などの硬質材
により薄膜2cを蒸着させ耐摩耗性の向上を計ってい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the configuration of the first embodiment of the present invention. (A) shows the whole cross section, (b) shows the top details of the contact portion. Reference numeral 1 is a temperature detecting element, for which a thermistor or a thermocouple is used. The thermistor can be made small and highly sensitive by forming and sintering metal oxide powder using vapor deposition technology, and can also measure small objects. Therefore, the response speed is fast. The contact portion 2 is composed of a partial spherical shell 2a and a flange portion 2b provided around the peripheral spherical shell 2a, and the temperature detecting element 1 is attached to the inner surface of the top of the partial spherical shell 2a. The contact portion 2 is made of polyimide, and a thin film 2c is vapor-deposited on the outer surface, which is a contact surface for the object to be measured, with a hard material such as diamond-like carbon (DLC) or titanium nitride (TIN) to improve wear resistance. Is measuring.
【0013】鍔部2bの外周下面には外周よりやや小さ
い直径を有するコイルスプリング4が取付けられてい
る。コイルスプリング4のばね定数は1〜5gf/mm
程度がよく、本実施例では2gf/mmとしている。ケ
ーシング3は中空の円筒で、コイルスプリング4の外径
よりやや大きな内径を有する部分にコイルスプリング4
を配置し、コイルスプリング4の鍔部2bと反対端を固
定している。これにより接触部2はコイルスプリング4
の軸方向に摺動自在にケーシング3によりガイドされ
る。ケーシング3の上端は鍔部2bと同一面となってお
り、ケーシングの下端にはコネクタ取付板8が設けられ
ケーシング3の内側に配置された同軸コネクタ7を固定
している。温度検出素子1のリード線6はコイルスプリ
ング4の内を通り同軸コネクタ7に接続されている。A coil spring 4 having a diameter slightly smaller than the outer circumference is attached to the lower surface of the outer circumference of the collar portion 2b. The spring constant of the coil spring 4 is 1 to 5 gf / mm.
The degree is good, and is 2 gf / mm in this embodiment. The casing 3 is a hollow cylinder, and the coil spring 4 is provided in a portion having an inner diameter slightly larger than the outer diameter of the coil spring 4.
And the end opposite to the collar portion 2b of the coil spring 4 is fixed. As a result, the contact portion 2 becomes the coil spring 4
Guided by the casing 3 so as to be slidable in the axial direction. The upper end of the casing 3 is flush with the flange 2b, and a connector mounting plate 8 is provided at the lower end of the casing to fix a coaxial connector 7 arranged inside the casing 3. The lead wire 6 of the temperature detecting element 1 passes through the inside of the coil spring 4 and is connected to the coaxial connector 7.
【0014】図2は第2実施例の構成を示す断面図であ
る。本実施例は図1に示す第1実施例のコイルスプリン
グ4をベローズ5に変更したものであり、他は図1と同
じである。ベローズ5のばね定数もコイルスプリング4
と同じく1〜5gf/mm程度がよく本実施例では2g
f/mmとしている。ベローズ5の上端を鍔部2bの下
面に密着させて取付け、下端をベローズ4の直径より小
さな内径を有するケーシング3内の取付部3aに固定す
ることにより、ベローズ5内と取付部3aからコネクタ
取付板8までのケーシング3内を密閉することができ、
この内部にあるリード線6や同軸コネクタ7に塵や水分
が付着するのを防止する。FIG. 2 is a sectional view showing the structure of the second embodiment. This embodiment is the same as FIG. 1 except that the coil spring 4 of the first embodiment shown in FIG. 1 is replaced with a bellows 5. The spring constant of the bellows 5 is also the coil spring 4
1 to 5 gf / mm is the same as above, and 2 g in this embodiment.
f / mm. By mounting the upper end of the bellows 5 in close contact with the lower surface of the collar portion 2b and fixing the lower end to the mounting portion 3a in the casing 3 having an inner diameter smaller than the diameter of the bellows 4, the connector mounting from the bellows 5 and the mounting portion 3a is performed. The inside of the casing 3 up to the plate 8 can be sealed,
This prevents dust and water from adhering to the lead wire 6 and the coaxial connector 7 inside.
【0015】温度計測は接触部2の温度検出素子1を被
計測面に押し当てることにより行う。押し当ては軽く触
れている程度でよい。被計測面が静止している場合は勿
論、移動している場合も計測可能である。被計測面が直
線または回転移動を高速で行う場合、接触部2の押さえ
力が小さいため被計測面と温度計測素子1の間には薄い
空気層が形成されるが、この空気層はμmのオーダなの
で温度計測に支障を来さない。またこの空気層により温
度計測素子1は被計測面に直接接しないので、摩耗を防
止できる。これに対し従来の接触型温度計測器の場合、
押し付け力が大きいため被計測面に接触部が押し付けら
れ、摩擦力により移動方向に引っ張られるので安定した
温度計測が出来ない。本発明の場合、空気層が発生しな
いような低速の場合でも、押し付け力が小さいため摩擦
力も小さく移動方向への引っ張りも少ないので安定した
温度計測ができる。The temperature is measured by pressing the temperature detecting element 1 of the contact portion 2 against the surface to be measured. The pressing may be a light touch. It is possible to measure not only when the surface to be measured is stationary but also when it is moving. When the surface to be measured is linearly or rotationally moved at high speed, a thin air layer is formed between the surface to be measured and the temperature measuring element 1 because the pressing force of the contact portion 2 is small. Since it is an order, it does not interfere with temperature measurement. Further, since the temperature measuring element 1 is not in direct contact with the surface to be measured by this air layer, wear can be prevented. On the other hand, in the case of the conventional contact type temperature measuring device,
Since the pressing force is large, the contact part is pressed against the surface to be measured and the frictional force pulls it in the moving direction, so stable temperature measurement cannot be performed. In the case of the present invention, even at a low speed where an air layer is not generated, since the pressing force is small, the frictional force is small and the tensile force in the moving direction is small, so that stable temperature measurement can be performed.
【0016】[0016]
【発明の効果】以上の説明より明らかなように、本発明
は、接触部の形状を凸形とし、被測定物への押し付け力
をコイルスプリングまたはベローズを用いて小さな値を
設定できるようにしているので、各種の形状の被測定面
を有する被測定物を計測でき、被測定物に傷等をつける
ことがほとんどない。また、移動している被測定面の計
測ができ、とくに高速で移動している場合被測定面と接
触部の頂部に取付けられた温度計測素子との間には薄い
空気層が形成され接触による摩耗を防止する。As is apparent from the above description, according to the present invention, the contact portion has a convex shape, and the pressing force against the object to be measured can be set to a small value by using a coil spring or a bellows. Therefore, the object to be measured having various shapes of the surface to be measured can be measured, and the object to be measured is scarcely damaged. In addition, it is possible to measure the moving surface to be measured, and especially when moving at a high speed, a thin air layer is formed between the surface to be measured and the temperature measuring element attached to the top of the contact part, which causes contact. Prevent wear.
【図 1】本発明の第1実施例の構成を示す断面図であ
る。FIG. 1 is a sectional view showing a configuration of a first embodiment of the present invention.
【図 2】本発明の第2実施例の構成を示す断面図であ
る。FIG. 2 is a sectional view showing a configuration of a second exemplary embodiment of the present invention.
【図 3】従来の接触型温度計測器の例を示す図であ
る。FIG. 3 is a diagram showing an example of a conventional contact type temperature measuring device.
1 温度検出素子 2 接触部 2a 部分球殻 2b 鍔部 3 ケーシング 3a 取付部 4 コイルスプリング 5 ベローズ 6 リード線 7 同軸コネクタ 8 コネクタ取付板 1 temperature detecting element 2 contact part 2a partial spherical shell 2b collar part 3 casing 3a mounting part 4 coil spring 5 bellows 6 lead wire 7 coaxial connector 8 connector mounting plate
Claims (3)
触部と、一端で前記接触部に固着しているコイルスプリ
ングと、該コイルスプリングの他端を固着するとともに
該コイルスプリングを包含してその軸方向に摺動自在に
案内するケーシングとを備えたことを特徴とする接触型
温度検出器。1. A convex contact portion having a temperature detecting element on the top, a coil spring fixed to the contact portion at one end, and the other end of the coil spring being fixed and including the coil spring. A contact-type temperature sensor, comprising: a casing that guides slidably in the axial direction.
触部と、一端で前記接触部に固着しているベローズと、
該ベローズの他端を固着するとともに該ベローズを包含
してその軸方向に摺動自在に案内するケーシングとを備
えたことを特徴とする接触型温度検出器。2. A convex contact portion having a temperature detecting element on the top, and a bellows fixed to the contact portion at one end,
A contact-type temperature sensor, comprising: a casing to which the other end of the bellows is fixed and which includes the bellows and is slidably guided in the axial direction thereof.
蒸着されていることを特徴とする請求項1または2記載
の接触型温度検出器。3. The contact type temperature sensor according to claim 1, wherein a thin film is deposited on the outer surface of the contact portion by a hard material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30615793A JPH07159248A (en) | 1993-12-07 | 1993-12-07 | Contact type temperature detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30615793A JPH07159248A (en) | 1993-12-07 | 1993-12-07 | Contact type temperature detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07159248A true JPH07159248A (en) | 1995-06-23 |
Family
ID=17953738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30615793A Pending JPH07159248A (en) | 1993-12-07 | 1993-12-07 | Contact type temperature detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07159248A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006038677A (en) * | 2004-07-28 | 2006-02-09 | Akebono Brake Res & Dev Center Ltd | Contact type surface thermometer and contact type surface temperature measurement device |
JP2010210248A (en) * | 2009-03-06 | 2010-09-24 | Yamatake Corp | Fluorescent temperature sensor |
JP2014079288A (en) * | 2012-10-12 | 2014-05-08 | Tanita Corp | Helical spring, connector, electrode, and electrometer |
JP2016151450A (en) * | 2015-02-17 | 2016-08-22 | 三菱マテリアル株式会社 | Temperature sensor |
JP2018205050A (en) * | 2017-06-01 | 2018-12-27 | 安立計器株式会社 | Fluorescence type optical fiber thermometer |
JP2020535420A (en) * | 2017-09-28 | 2020-12-03 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトTdk Electronics Ag | Sensor with pressure elasticity |
-
1993
- 1993-12-07 JP JP30615793A patent/JPH07159248A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006038677A (en) * | 2004-07-28 | 2006-02-09 | Akebono Brake Res & Dev Center Ltd | Contact type surface thermometer and contact type surface temperature measurement device |
JP2010210248A (en) * | 2009-03-06 | 2010-09-24 | Yamatake Corp | Fluorescent temperature sensor |
JP2014079288A (en) * | 2012-10-12 | 2014-05-08 | Tanita Corp | Helical spring, connector, electrode, and electrometer |
JP2016151450A (en) * | 2015-02-17 | 2016-08-22 | 三菱マテリアル株式会社 | Temperature sensor |
JP2018205050A (en) * | 2017-06-01 | 2018-12-27 | 安立計器株式会社 | Fluorescence type optical fiber thermometer |
JP2020535420A (en) * | 2017-09-28 | 2020-12-03 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトTdk Electronics Ag | Sensor with pressure elasticity |
US11486771B2 (en) | 2017-09-28 | 2022-11-01 | Tdk Electronics Ag | Sensor having a pressing resilience |
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