JPS6324629Y2 - - Google Patents
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- Publication number
- JPS6324629Y2 JPS6324629Y2 JP1980156731U JP15673180U JPS6324629Y2 JP S6324629 Y2 JPS6324629 Y2 JP S6324629Y2 JP 1980156731 U JP1980156731 U JP 1980156731U JP 15673180 U JP15673180 U JP 15673180U JP S6324629 Y2 JPS6324629 Y2 JP S6324629Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- electrically insulating
- pair
- heating element
- heat dissipation
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 40
- 230000017525 heat dissipation Effects 0.000 claims description 25
- 125000006850 spacer group Chemical group 0.000 claims description 20
- 229910052573 porcelain Inorganic materials 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【考案の詳細な説明】
本考案は、正の抵抗温度係数を有するチタン酸
バリウム系半導体磁器発熱体（以下正特性磁器発
熱体と称す）を発熱源とする発熱装置に関する。[Detailed Description of the Invention] The present invention relates to a heat generating device using a barium titanate semiconductor ceramic heating element (hereinafter referred to as a positive characteristic ceramic heating element) having a positive temperature coefficient of resistance as a heat generation source.
正特性磁器発熱体は、キユリー温度を適当に選
定することにより任意の発熱温度が得られるこ
と、発熱温度が特定温度に達すると電気抵抗が急
激に増加して自己発熱を自動的に制御する自己温
度制御機能を有し過熱の危険がないこと等の優れ
た特長を有し、安全で信頼性も高いことから、従
来より各種の発熱装置の発熱源として広く利用さ
れている。 Positive characteristic porcelain heating elements are self-heating elements that can achieve any heat generation temperature by appropriately selecting the Curie temperature, and that when the heat generation temperature reaches a certain temperature, the electrical resistance increases rapidly and self-heating is automatically controlled. It has excellent features such as having a temperature control function and no risk of overheating, and is safe and highly reliable, so it has been widely used as a heat source for various heat generating devices.
第１図は従来の発熱装置の正面部分断面図、第
２図は第１図のＡ−Ａ線上における断面図であ
る。この発熱装置は複写機において複写紙を加熱
乾燥させもしくは熱定着させる熱ロール装置また
はヘヤカーラ等として好適なものである。 FIG. 1 is a partial front sectional view of a conventional heat generating device, and FIG. 2 is a sectional view taken along line A--A in FIG. 1. This heat generating device is suitable as a heat roll device or a hair curler for heating and drying or thermally fixing copy paper in a copying machine.
図に示すように、従来の発熱装置は、ペレツト
状の正特性磁器発熱体１を電極板２，３の間に挾
み、該電極板２，３の上にマイカ等の絶縁板４，
５を重ね、該絶縁板４，５の上に円弧状の折曲部
６ａ，７ａを有する伝熱体６，７の平担部６ｂ，
７ｂを密着させ、かつ伝熱体６，７の両端を、ハ
トメまたはリベツト等の止具８を用いて、支持体
９，１０に固着すると共に、これらを熱伝導性の
良好な材料、例えばアルミニウム等より構成され
た円筒状の放熱体１１内に圧入させた構造となつ
ていた。 As shown in the figure, the conventional heat generating device includes a pellet-shaped PTC porcelain heating element 1 sandwiched between electrode plates 2 and 3, and an insulating plate 4 made of mica or the like on top of the electrode plates 2 and 3.
5 are stacked on top of each other, and the flat portions 6b of the heat transfer bodies 6, 7 have arcuate bent portions 6a, 7a on the insulating plates 4, 5,
7b, and both ends of the heat transfer bodies 6, 7 are fixed to the supports 9, 10 using fasteners 8 such as eyelets or rivets, and these are made of a material with good thermal conductivity, such as aluminum. It had a structure in which it was press-fitted into a cylindrical heat dissipating body 11 composed of, etc.
組立状態では、伝熱体６，７の円弧状の折曲げ
部分６ａ，７ａが自己の収縮時弾発力によつて放
熱体１１の内壁面に圧接し、その弾発力によつて
電極板２，３間に正特性磁器発熱体１が圧支され
る。 In the assembled state, the arc-shaped bent portions 6a, 7a of the heat transfer bodies 6, 7 are brought into pressure contact with the inner wall surface of the heat radiating body 11 by their own elastic force when contracted, and the electrode plate is pressed by the elastic force. A positive characteristic porcelain heating element 1 is supported between 2 and 3.
しかし、上述の従来の発熱装置は、発熱部分を
放熱体１１内に挿入する場合、伝熱体６，７の円
弧状折曲部６ａ，７ａを強制的に縮小せしめつつ
これを放熱体１１の一端部から挿入しなければな
らないため、次のような欠点があつた。 However, in the above-described conventional heat generating device, when inserting the heat generating portion into the heat radiating body 11, the arcuate bent portions 6a, 7a of the heat transfer bodies 6, 7 are forcibly reduced and the heat generating portion is inserted into the heat radiating body 11. Since it had to be inserted from one end, it had the following drawbacks.
(1) 伝熱体６，７の円弧状折曲部６ａ，７ａの外
周面と、放熱体１１の内周面が互に圧接して擦
れ合うため、両面に擦過傷を生い、品質や信頼
性が低下する。また擦過傷による切粉が接触面
に介入し、熱伝導が悪くなる。(1) The outer circumferential surfaces of the arcuate bent portions 6a, 7a of the heat transfer elements 6, 7 and the inner circumferential surface of the heat dissipating element 11 press against each other and rub against each other, resulting in scratches on both sides, resulting in poor quality and reliability. decreases. In addition, chips due to abrasions get involved in the contact surface, impairing heat conduction.
(2) 伝熱体６，７と放熱体１１の長さが長くなる
程、両者の間に発生する摩擦力が大きくなるた
め、発熱量の大きい長尺のものを実現すること
が非常に困難であつた。(2) The longer the lengths of the heat transfer elements 6, 7 and the heat radiator 11, the greater the frictional force generated between them, making it extremely difficult to create long pieces that generate a large amount of heat. It was hot.
(3) 伝熱体６，７と放熱体１１の接触面にグリー
ス、樹脂等のヒートシンカ材を介在させ、両者
間の熱伝導性を高めようとしても、ヒートシン
カ材が放熱体１１内に伝熱体６，７を挿入する
時に削り取られてしまうため、ヒートシンカ材
による熱伝導の向上を図ることができない。(3) Even if a heat sinker material such as grease or resin is interposed between the contact surfaces of the heat conductors 6 and 7 and the heat sink 11 to increase the thermal conductivity between the two, the heat sink material will not transfer heat into the heat sink 11. Since it is scraped off when inserting the bodies 6 and 7, it is impossible to improve heat conduction by the heat sinker material.
(4) 上述のような諸欠点の影響を少なくするに
は、伝熱体６，７の円弧状折曲部６ａ，７ａの
外径と放熱体１１の内径との差を小さくすれば
良いわけであるが、そうすると伝熱体６，７と
放熱体１１との間の熱接触が弱くなり、熱効率
が低下する。(4) In order to reduce the effects of the above-mentioned defects, it is sufficient to reduce the difference between the outer diameter of the arcuate bent portions 6a and 7a of the heat transfer elements 6 and 7 and the inner diameter of the heat dissipation element 11. However, in this case, the thermal contact between the heat transfer bodies 6, 7 and the heat radiating body 11 becomes weak, and the thermal efficiency decreases.
本考案は上述する諸欠点を除去し、熱伝導性の
悪化や、擦過傷などを生じることなく、長尺のも
のであつても容易に組立てることのできる発熱装
置を提供することを目的とする。 The object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a heat generating device that can be easily assembled even if it is long, without deteriorating thermal conductivity or causing scratches.
上記目的を達成するため、本考案は、放熱面側
と対向する一面側を開口させ、幅方向の両開口端
縁に、その長さ方向に沿い、内側に突出して互に
対向する一対の係止縁を形成すると共に、長さ方
向の少なくとも一端側を開口させた放熱ケース内
に、厚み方向の両面に電極を有する複数個の正特
性磁器発熱体と、前記正特性磁器発熱体を個別に
挿入して位置決めする切欠を、長さ方向に沿い間
隔をおいて形成した一対の板状電気絶縁スペーサ
と、前記電気絶縁スペーサのそれぞれに個別に結
合され前記正特性磁器発熱体の前記電極に対接す
る一対の電極板と、前記電極板のそれぞれに重ね
られる一対の電気絶縁板とで構成される発熱要素
を内蔵させ、前記放熱ケースの前記係止縁間に、
前記電気絶縁板及び前記電極板を介して前記正特
性磁器発熱体を前記放熱面に弾力的に押圧する複
数個の板バネを、間隔をおいて着脱自在に係止し
たことを特徴とする。 In order to achieve the above object, the present invention has an opening on one side opposite to the heat dissipation side, and a pair of opposing engagements that protrude inward along the length direction on both edges of the opening in the width direction. A plurality of positive characteristic porcelain heating elements having electrodes on both sides in the thickness direction, and the positive characteristic porcelain heating elements are individually placed in a heat dissipation case that forms a trailing edge and has at least one end side opened in the length direction. a pair of plate-shaped electrically insulating spacers having cutouts for insertion and positioning formed at intervals along the length; each of the electrically insulating spacers individually coupled to the electrodes of the PTC porcelain heating element; A heat generating element is built in, which is composed of a pair of contacting electrode plates and a pair of electrically insulating plates stacked on each of the electrode plates, and between the locking edges of the heat dissipation case,
A plurality of leaf springs for elastically pressing the PTC porcelain heating element against the heat radiation surface via the electrical insulating plate and the electrode plate are detachably locked at intervals.
以下実施例たる添付図面を参照し、本考案の内
容を具体的に説明する。第３図Ａは本考案に係る
発熱装置の部分欠損図、第３図Ｂは第３図Ａの
B1−B1線上における断面図、第３図Ｃは同じく
B2−B2線上における断面図である。図において、
第１図および第２図と同一の参照符号は機能的に
同一性ある構成部分を示している。この実施例で
は、放熱ケース１１は、アルミニウム等の熱伝導
性の良好な材料を使用し、放熱面となる底面１１
ａと対向する他面側に一定幅W1で開口する開口
部１２を設け、該開口部１２を構成する開口端縁
を、その長さ方向に沿つて内側に折曲げて鉤形の
係止縁１１ｂ，１１ｃを形成してある。そしてこ
の放熱ケース１１の内部に、正特性磁器発熱体
１、電極板２，３、絶縁板４，５および放熱板１
３より成る発熱要素を内蔵せしめ、該発熱要素
を、前記係止縁１２ｂ−１２ｃ間に着脱自在に係
止した板バネ１４によつて、弾力的に押圧する構
造となつている。 DESCRIPTION OF THE PREFERRED EMBODIMENTS The content of the present invention will be specifically described below with reference to the accompanying drawings, which are examples. Fig. 3A is a partially cutaway view of the heat generating device according to the present invention, and Fig. 3B is the same as Fig. 3A.
Cross-sectional view on line B 1 - B 1 , Figure 3 C is the same
It is a cross-sectional view on line B2 - B2 . In the figure,
The same reference numerals as in FIGS. 1 and 2 indicate functionally identical components. In this embodiment, the heat dissipation case 11 is made of a material with good thermal conductivity such as aluminum, and the bottom surface 11 serves as a heat dissipation surface.
An opening 12 having a constant width W 1 is provided on the other side opposite to a, and the opening edge constituting the opening 12 is bent inward along its length to form a hook-shaped lock. Edges 11b and 11c are formed. Inside this heat dissipation case 11, a positive characteristic ceramic heating element 1, electrode plates 2, 3, insulating plates 4, 5, and a heat dissipation plate 1 are provided.
3 is built in, and the heating element is elastically pressed by a leaf spring 14 that is detachably locked between the locking edges 12b and 12c.
発熱要素は、第４図にも示すように、複数個の
円板状の正特性磁器発熱体１を、適当な間隔で配
列すると共に、各正特性磁器発熱体１の電極形成
面たる両面側に電極板２，３を重ね、更にこの電
極板２，３の上にマイカ板等の耐熱絶縁材料より
成る絶縁板４，５を重ねた構造となつている。正
特性磁器発熱体１のそれぞれは、電極板２−３間
に重ねられた板状の耐熱絶縁スペーサ１５，１６
によつて所定の間隔となるように位置決めされ
る。絶縁スペーサ１５，１６はマイカ板等によつ
て構成されるものであるが、その長さ方向の同一
位置に、適当な間隔で同一半径の円弧状の切欠１
５ａ，１６ａを設けてあり、両スペーサ１５，１
６を重ねたとき、両者の切欠１５ａ，１６ａによ
つて構成される円孔内に、前記正特性磁器発熱体
１を一個づつ入れて位置決めし、その位置ズレを
阻止してある。絶縁スペーサ１５，１６の両端側
には孔１５ｂ，１６ｂを設けてあり、該孔１５
ｂ，１６ｂ内に電極板２，３の両端部に設けた突
起２ａ，３ａをそれぞれ嵌合させて、電極板２と
絶縁スペーサ１５および電極板３と絶縁スペーサ
１６を一体化してある。絶縁板４，５の幅W2、
絶縁スペーサ１５，１６の幅W3（＝W31＋W32）
は、電極板２，３の幅W4よりは大きく、かつ放
熱ケース１１の内径幅W5（第３図Ａ，Ｂ）よりは
僅かに小さくなつている。したがつて、電極板
２，３を前述の如く絶縁スペーサ１５，１６に対
して一体化した場合には、電極板２，３は、絶縁
板４，５および絶縁スペーサ１５，１６の外周縁
より内側の領域内に位置決めされるから、電極板
２，３が放熱ケース１１の内側面に接触すること
がなく、電気的絶縁の信頼性の高いものが得られ
る。 As shown in FIG. 4, the heat generating element is composed of a plurality of disc-shaped PTC porcelain heating elements 1 arranged at appropriate intervals, and both sides of each PTC porcelain heating element 1 are electrode-forming surfaces. It has a structure in which electrode plates 2 and 3 are stacked on top of each other, and insulating plates 4 and 5 made of a heat-resistant insulating material such as a mica plate are further stacked on top of these electrode plates 2 and 3. Each of the positive characteristic ceramic heating elements 1 includes plate-shaped heat-resistant insulating spacers 15 and 16 stacked between the electrode plates 2-3.
are positioned at predetermined intervals. The insulating spacers 15 and 16 are made of mica plates or the like, and are provided with arc-shaped notches 1 having the same radius at appropriate intervals at the same position in the length direction.
5a, 16a are provided, and both spacers 15, 1
6 are placed one on top of the other, one positive characteristic ceramic heating element 1 is placed and positioned in the circular hole formed by the notches 15a and 16a of both, and the displacement of the position is prevented. Holes 15b and 16b are provided at both ends of the insulating spacers 15 and 16.
The protrusions 2a and 3a provided at both ends of the electrode plates 2 and 3 are fitted into the electrode plates 2 and 16b, respectively, so that the electrode plate 2 and the insulating spacer 15 and the electrode plate 3 and the insulating spacer 16 are integrated. Width W 2 of insulating plates 4 and 5,
Width W 3 of insulating spacers 15 and 16 (=W 31 +W 32 )
is larger than the width W 4 of the electrode plates 2 and 3, and slightly smaller than the inner diameter width W 5 of the heat dissipation case 11 (FIGS. 3A and 3B). Therefore, when the electrode plates 2 and 3 are integrated with the insulating spacers 15 and 16 as described above, the electrode plates 2 and 3 are separated from the outer periphery of the insulating plates 4 and 5 and the insulating spacers 15 and 16. Since the electrode plates 2 and 3 are positioned within the inner region, the electrode plates 2 and 3 do not come into contact with the inner surface of the heat dissipation case 11, and highly reliable electrical insulation can be obtained.
この発熱要素を放熱ケース１１内に組込むにあ
たつては、正特性磁器発熱体１を絶縁スペーサ１
５，１６の切欠１５ａ，１６ａによつて構成され
る円孔内に入れて位置決めし、その両側に電極板
２，３および絶縁板４，５を順次重ね、更に絶縁
板４の上に放熱板１３を重ねて発熱要素の組立体
を構成し、この組立体を、第５図ａに示すよう
に、放熱ケース１１の長さ方向の一端部側からそ
の内部に挿入する。この場合、組立体の全体の厚
みd1が放熱ケース１１の内径高さh1より小さくな
るように選定すれば、組立体は非常に円滑に放熱
ケース１１の内部に挿入することができる。また
放熱板１３の長さ方向の両端部には、折曲片１３
ａ，１３ｂ（第３図ｃ参照）を設けてあり、この
折曲片１３ａ，１３ｂによつて正特性磁器発熱体
１、電極板２，３および絶縁スペーサ１５，１６
の長さ方向の位置ズレが阻止される。 When assembling this heating element into the heat dissipation case 11, the positive characteristic porcelain heating element 1 is placed between the insulating spacer 1
The electrode plates 2 and 3 and the insulating plates 4 and 5 are stacked one after another on both sides of the circular hole formed by the notches 15a and 16a of 5 and 16, and the heat sink plate is placed on top of the insulating plate 4. 13 are stacked to form a heat generating element assembly, and this assembly is inserted into the heat dissipating case 11 from one end in the length direction, as shown in FIG. 5a. In this case, if the overall thickness d 1 of the assembly is selected to be smaller than the inner diameter height h 1 of the heat dissipation case 11, the assembly can be inserted into the heat dissipation case 11 very smoothly. Further, bent pieces 13 are provided at both ends of the heat sink 13 in the length direction.
a, 13b (see FIG. 3c), and these bent pieces 13a, 13b connect the positive characteristic ceramic heating element 1, the electrode plates 2, 3, and the insulating spacers 15, 16.
displacement in the longitudinal direction is prevented.
発熱要素を放熱ケース１１の内部に組込んだ後
は、第５図ｂに示すように、放熱ケース１１の係
止縁１１ｂ−１１ｃ間に、板バネ１４を斜めに挿
し込みつつ、矢印P1方向に回転させ、板バネ１
４の両端を係止縁１１ｂ−１１ｃ間に係止する。
これにより板バネ１４の両端部が係止縁１１ｂ，
１１ｃによつて湾曲方向とは逆の方向に押し曲げ
られるから、第３図Ａ〜Ｃに示した組立状態では
板バネ１４の反発力が発熱要素組立体の各部分の
接合面および組立体と放熱ケース１１の底面１１
ａとの接合面に加わり、組立体が放熱ケース１１
の内部に弾力的に支持固定されると共に、各部分
の接合面が密着し、熱結合性が非常に高くなる。 After the heat generating element is assembled inside the heat dissipation case 11, as shown in FIG . Rotate the leaf spring 1 in the direction
4 is locked between the locking edges 11b and 11c.
As a result, both ends of the leaf spring 14 are fixed to the locking edges 11b,
11c in the opposite direction to the bending direction, the repulsive force of the leaf spring 14 is applied to the joint surfaces of each part of the heating element assembly and the assembly in the assembled state shown in FIGS. 3A to 3C. Bottom surface 11 of heat dissipation case 11
The assembly joins the joint surface with the heat dissipation case 11
It is elastically supported and fixed inside the body, and the bonding surfaces of each part are in close contact, resulting in extremely high thermal bonding properties.
前記板バネ１４は、回転前方の稜角部１４ａ，
１４ｂを円弧状に形成し、係止縁１１ｂ，１１ｃ
に回転挿入する際に、引つ掛りを生じることなく
円滑に挿入できるようにしてある。また、板バネ
１４の個数は、正特性磁器発熱体１の個数と同数
程度が望ましい。 The plate spring 14 has a ridge corner portion 14a at the front of the rotation,
14b is formed into an arc shape, and the locking edges 11b, 11c
It is designed so that it can be inserted smoothly without getting caught when rotating and inserting it into the machine. Further, the number of leaf springs 14 is preferably about the same as the number of positive characteristic ceramic heating elements 1.
なお、第３図Ａ，Ｃの符号１７，１８は電極板
２，３にそれぞれ接続されたリード線である。 Note that reference numerals 17 and 18 in FIGS. 3A and 3C are lead wires connected to the electrode plates 2 and 3, respectively.
以上述べたように、本考案は、放熱面側と対向
する一面側を開口させ、幅方向の両開口端縁に、
その長さ方向に沿い、内側に突出して互に対向す
る一対の係止縁を形成すると共に、長さ方向の少
なくとも一端側を開口させた放熱ケース内に、厚
み方向の両面に電極を有する複数個の正特性磁器
発熱体と、前記正特性磁器発熱体を個別に挿入し
て位置決めする切欠を、長さ方向に沿い間隔をお
いて形成した一対の板状電気絶縁スペーサと、前
記電気絶縁スペーサのそれぞれに個別に結合され
前記正特性磁器発熱体の前記電極に対接する一対
の電極板と、前記電極板のそれぞれに重ねられる
一対の電気絶縁板とで構成される発熱要素を内蔵
させ、前記放熱ケースの前記係止縁間に、前記電
気絶縁板及び前記電極板を介して前記正特性磁器
発熱体を前記放熱面に弾力的に押圧する複数個の
板バネを、間隔をおいて着脱自在に係止したこと
を特徴とするから、放熱ケースに対する発熱要素
の組込み、この発熱要素の支持固定が非常に容易
で、発熱要素を構成する正特性磁器発熱体、電極
板および絶縁板等の相互の密着性、発熱要素と放
熱ケースの密着性が非常に良好で、熱結合性の非
常に高い発熱装置を提供することができる。ま
た、正特性磁器発熱体を個別に挿入して位置決め
する切欠を、長さ方向に沿い間隔をおいて形成し
た一対の板状電気絶縁スペーサを備えるから、複
数個の正特性磁器発熱体の位置ずれを阻止し、放
熱面の温度分布の変動及び正特性磁器発熱体相互
間の電気的接触事故を防止し得るようにした高信
頼度の発熱装置を提供できる。 As described above, in the present invention, one side opposite to the heat dissipation side is opened, and the edges of both openings in the width direction are
A plurality of electrodes are provided on both sides in the thickness direction in a heat dissipation case that has a pair of locking edges protruding inward and facing each other along the length direction, and is open at least on one end side in the length direction. a pair of plate-shaped electrically insulating spacers in which cutouts for individually inserting and positioning the positive characteristic porcelain heating elements are formed at intervals along the length direction; and the electrically insulating spacer and a pair of electrically insulating plates that are stacked on each of the electrode plates, and a heating element that is individually coupled to each of the electrodes of the positive characteristic ceramic heating element, and a pair of electrically insulating plates that are stacked on each of the electrode plates. A plurality of leaf springs that elastically press the positive characteristic porcelain heating element against the heat radiation surface via the electrical insulating plate and the electrode plate are detachably attached at intervals between the locking edges of the heat radiation case. Because of this feature, it is very easy to incorporate the heat generating element into the heat dissipation case and to support and fix the heat generating element. It is possible to provide a heat generating device with very good adhesion between the heat generating element and the heat dissipation case, and very high thermal coupling properties. In addition, since it is provided with a pair of plate-shaped electrically insulating spacers in which cutouts for inserting and positioning the positive temperature coefficient porcelain heating elements individually are formed at intervals along the length, the positions of the plurality of positive temperature coefficient porcelain heating elements can be adjusted. It is possible to provide a highly reliable heating device that can prevent misalignment, prevent variations in temperature distribution on a heat radiation surface, and prevent electrical contact accidents between positive characteristic ceramic heating elements.
更に、正特性磁器発熱体の電極に対接する一対
の電極板を、電気絶縁スペーサのそれぞれに個別
に結合させてあるので、電極板の位置ズレを抑
え、電極板と放熱ケースとの間の電気的短絡を防
止し得るようにした安全性及び信頼性の高い発熱
装置を提供できる。 Furthermore, since the pair of electrode plates facing the electrodes of the PTC porcelain heating element are individually bonded to each of the electrically insulating spacers, the displacement of the electrode plates is suppressed, and the electrical connection between the electrode plates and the heat dissipation case is prevented. Therefore, it is possible to provide a highly safe and reliable heating device that can prevent short circuits.
第１図は従来の発熱装置の正面断面図、第２図
は第１図のＡ−Ａ線上における断面図、第３図Ａ
は本考案に係る発熱装置の部分欠損平面図、第３
図Ｂは第３図ＡのB1−B1線上における断面図、
第３図Ｃは第３図ＡのB2−B2線上における断面
図、第４図は発熱要素の分解斜視図、第５図ａ，
ｂは本考案に係る発熱要素の組立方法を説明する
図である。
１……正特性磁器発熱体、２，３……電極板、
４，５……絶縁板、１１……放熱ケース、１１ａ
……放熱面（底面）、１１ｂ，１１ｃ……係止縁、
１２……開口部、１３……放熱板、１４……板バ
ネ。
Figure 1 is a front sectional view of a conventional heat generating device, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is A.
3 is a partially broken plan view of the heat generating device according to the present invention.
Figure B is a sectional view taken along line B1 - B1 of Figure 3A,
Fig. 3C is a sectional view taken along line B 2 - B 2 of Fig. 3A, Fig. 4 is an exploded perspective view of the heating element, Fig. 5a,
b is a diagram illustrating a method of assembling a heat generating element according to the present invention. 1... Positive characteristic porcelain heating element, 2, 3... Electrode plate,
4, 5... Insulating plate, 11... Heat dissipation case, 11a
... Heat radiation surface (bottom surface), 11b, 11c ... Locking edge,
12... Opening, 13... Heat sink, 14... Leaf spring.
Claims (1)
の両開口端縁に、その長さ方向に沿い、内側に突
出して互に対向する一対の係止縁を形成すると共
に、長さ方向の少なくとも一端側を開口させた放
熱ケース内に、厚み方向の両面に電極を有する複
数個の正特性磁器発熱体と、前記正特性磁器発熱
体を個別に挿入して位置決めする切欠を、長さ方
向に沿い間隔をおいて形成した一対の板状電気絶
縁スペーサと、前記電気絶縁スペーサのそれぞれ
に個別に結合され前記正特性磁器発熱体の前記電
極に対接する一対の電極板と、前記電極板のそれ
ぞれに重ねられる一対の電気絶縁板とで構成され
る発熱要素を内蔵させ、前記放熱ケースの前記係
止縁間に、前記電気絶縁板及び前記電極板を介し
て前記正特性磁器発熱体を前記放熱面に弾力的に
押圧する複数個の板バネを、間隔をおいて着脱自
在に係止したことを特徴とする発熱装置。 One surface side opposite to the heat dissipation surface side is opened, and a pair of locking edges protruding inward and facing each other along the length direction are formed on both opening edges in the width direction, and A plurality of positive characteristic porcelain heating elements having electrodes on both sides in the thickness direction and notches for individually inserting and positioning the positive characteristic porcelain heating elements are placed in a heat dissipation case with at least one end open. a pair of plate-shaped electrically insulating spacers formed at intervals along the electrically insulating spacer; a pair of electrode plates that are individually coupled to each of the electrically insulating spacers and that are in contact with the electrodes of the positive temperature characteristic ceramic heating element; A heating element composed of a pair of electrically insulating plates stacked on each other is built in, and the positive characteristic porcelain heating element is inserted between the locking edges of the heat dissipation case via the electrically insulating plate and the electrode plate. A heat generating device characterized in that a plurality of leaf springs that elastically press against a heat radiation surface are detachably locked at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980156731U JPS6324629Y2 (en) | 1980-10-31 | 1980-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980156731U JPS6324629Y2 (en) | 1980-10-31 | 1980-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5778594U JPS5778594U (en) | 1982-05-14 |
| JPS6324629Y2 true JPS6324629Y2 (en) | 1988-07-06 |
Family
ID=29515873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980156731U Expired JPS6324629Y2 (en) | 1980-10-31 | 1980-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6324629Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826987U (en) * | 1971-07-31 | 1973-03-31 | ||
| JPS5121952A (en) * | 1974-08-16 | 1976-02-21 | Hitachi Ltd | HEADORAIYAA |
| JPS5217944B2 (en) * | 1973-01-30 | 1977-05-18 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5631832Y2 (en) * | 1975-07-25 | 1981-07-29 | ||
| JPS5617748Y2 (en) * | 1976-01-22 | 1981-04-24 |
-
1980
- 1980-10-31 JP JP1980156731U patent/JPS6324629Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4826987U (en) * | 1971-07-31 | 1973-03-31 | ||
| JPS5217944B2 (en) * | 1973-01-30 | 1977-05-18 | ||
| JPS5121952A (en) * | 1974-08-16 | 1976-02-21 | Hitachi Ltd | HEADORAIYAA |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5778594U (en) | 1982-05-14 |
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