JP2018098002A - Heater resistor - Google Patents

Heater resistor Download PDF

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JP2018098002A
JP2018098002A JP2016240330A JP2016240330A JP2018098002A JP 2018098002 A JP2018098002 A JP 2018098002A JP 2016240330 A JP2016240330 A JP 2016240330A JP 2016240330 A JP2016240330 A JP 2016240330A JP 2018098002 A JP2018098002 A JP 2018098002A
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Prior art keywords
circuit board
pattern
connection
case
resistor
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Inventor
和雄 小金平
Kazuo Koganehira
和雄 小金平
大宇 川崎
Taiu Kawasaki
大宇 川崎
溝尻 芳行
Yoshiyuki Mizojiri
芳行 溝尻
浩二郎 西山
Kojiro Nishiyama
浩二郎 西山
牧野 大介
Daisuke Makino
大介 牧野
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Teikoku Tsushin Kogyo Co Ltd
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Teikoku Tsushin Kogyo Co Ltd
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Priority to JP2016240330A priority Critical patent/JP2018098002A/en
Publication of JP2018098002A publication Critical patent/JP2018098002A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a heater resistor which has dimensional accuracy, can improve the conduction efficiency of heat, facilitates manufacturing, and can reduce a manufacturing cost.SOLUTION: A heater resistor 1 includes: a circuit substrate 10 formed with a resisting body pattern 13 for heating and a terminal connection pattern 15 connected to the resisting body pattern 13; a lead wire 30 attached with a connection terminal 35 at an end portion of the terminal connection pattern 15; a case 60 which covers a connection place with the connection terminal 35 of a circuit substrate 10 and a tip end part of the lead wire 30 attached with the connection terminal 35, integrally with the circuit substrate 10 by insert-molding; and a metallic plate 50 which is attached to a surface on the opposite side to a surface formed with the resisting body pattern 13 of the circuit substrate 10 and exposes its lower surface to a lower surface of the case 60.SELECTED DRAWING: Figure 3

Description

本発明は、各種機器の加熱等に用いて好適なヒーター抵抗器に関するものである。   The present invention relates to a heater resistor suitable for use in heating various devices.

従来、例えば、屋外に設置した給湯器の通水パイプを温めるために、セメント抵抗器製のヒーター抵抗器が用いられてきた。従来のヒーター抵抗器は、例えば特許文献1の図1に示すように、セラミックケース(10)の収納部(11)内に発熱用の抵抗体(20)を収納し、この抵抗体(20)の両端に接続したリード線(25),(25)をセラミックケース(10)の両端から引き出した状態で、収納部(11)内に絶縁材料からなる充填剤(30)を充填・固化することによって構成されている。このヒーター抵抗器は、前記セラミックケース(10)の収納部(11)を設けた反対側の面をパイプ当接面(13)としており、このパイプ当接面(13)に加熱しようとする通水パイプ(75)を当接する。   Conventionally, for example, a heater resistor made of a cement resistor has been used to warm a water pipe of a water heater installed outdoors. For example, as shown in FIG. 1 of Patent Document 1, a conventional heater resistor houses a heating resistor (20) in a housing part (11) of a ceramic case (10), and this resistor (20). In the state where the lead wires (25), (25) connected to both ends of the ceramic case (10) are pulled out from both ends of the ceramic case (10), the storage portion (11) is filled with a filler (30) made of an insulating material and solidified. It is constituted by. In this heater resistor, the opposite surface of the ceramic case (10) where the storage portion (11) is provided is used as a pipe contact surface (13), and the pipe contact surface (13) is subjected to heating. Contact the water pipe (75).

特開2000−274836号公報JP 2000-274836 A

しかし、セラミックケースは、その寸法精度を高くすることが困難なので、パイプ等への当接面を精度よく形成することができなかった。このため通水パイプ等の被加熱体の表面に前記セラミックケースの当接面を当接した際にこれを密着させることができず、熱伝導効率が悪くなってしまうという問題があった。   However, since it is difficult to increase the dimensional accuracy of the ceramic case, the contact surface to the pipe or the like cannot be formed with high accuracy. For this reason, when the contact surface of the ceramic case is brought into contact with the surface of an object to be heated such as a water pipe, there is a problem in that the heat conduction efficiency is deteriorated.

本発明は上述の点に鑑みてなされたものでありその目的は、寸法精度が良くて熱の伝導効率を高くでき、また製造が容易で製造コストの低減化を図ることもできるヒーター抵抗器を提供することにある。   The present invention has been made in view of the above-mentioned points, and its purpose is to provide a heater resistor that has good dimensional accuracy, can increase heat conduction efficiency, can be easily manufactured, and can reduce manufacturing costs. It is to provide.

本発明にかかるヒーター抵抗器は、表面に発熱用の抵抗体パターンと、前記抵抗体パターンに接続される端子接続パターンとを形成した回路基板と、前記回路基板の端子接続パターンに接続される接続端子を取り付けたリード線と、少なくとも前記回路基板の前記接続端子との接続箇所と、前記接続端子を取り付けたリード線の先端部分とを、前記回路基板と共に一体にインサート成形によって覆うケースと、を具備することを特徴としている。
ケースをインサート成形による成形品で構成したので、寸法精度を容易に高めることができる。このため、ケースの、被加熱体への当接面を被加熱体の表面の形状に合わせて容易に密着させることが可能となり、熱伝導効率を高めることができる。また、製造が容易で、製造コストの低減化も図ることが可能になる。また回路基板と共に、接続端子とリード線も合わせてケース内にインサート成形するので、例えケースから突出しているリード線の部分に強い力が加わっても、リード線と接続端子との接続状態、接続端子と回路基板との接続状態が劣化することはなく、これら各部品間の確実な接続状態を維持することができる。
The heater resistor according to the present invention comprises a circuit board having a heating resistor pattern formed on the surface and a terminal connection pattern connected to the resistor pattern, and a connection connected to the terminal connection pattern of the circuit board. A case in which a lead wire to which a terminal is attached, a connection portion between at least the connection terminal of the circuit board, and a tip portion of the lead wire to which the connection terminal is attached are integrally covered with the circuit board by insert molding; It is characterized by having.
Since the case is formed of a molded product by insert molding, the dimensional accuracy can be easily increased. For this reason, the contact surface of the case to the heated body can be easily brought into close contact with the shape of the surface of the heated body, and the heat conduction efficiency can be increased. Further, the manufacturing is easy, and the manufacturing cost can be reduced. In addition, the connection terminals and lead wires together with the circuit board are insert-molded in the case, so even if a strong force is applied to the lead wires protruding from the case, the connection state and connection between the lead wires and the connection terminals The connection state between the terminal and the circuit board does not deteriorate, and a reliable connection state between these components can be maintained.

また本発明は、前記ケースが、さらに前記回路基板の抵抗体パターンと端子接続パターンを形成した部分全体を覆っていることを特徴としている。
これによって、回路基板の電気的動作を行う部分全体をケースで覆うことができ、効果的な防水等を行うことができる。
Further, the present invention is characterized in that the case further covers the entire portion of the circuit board where the resistor pattern and the terminal connection pattern are formed.
As a result, the entire portion of the circuit board that performs the electrical operation can be covered with the case, and effective waterproofing or the like can be performed.

また本発明は、前記回路基板の前記抵抗体パターンを形成した面の反対側の面に伝熱板を取り付け、さらに前記伝熱板の前記回路基板に対向しない側の面を前記ケースの表面に露出させたことを特徴としている。
これによって、抵抗体パターンから熱伝導効率のよい伝熱板を介してケースの表面に効率よく熱を伝導することができる。従ってこの伝熱板が露出したケースの表面を被加熱体への当接面として当接すれば、被加熱体に熱をより効果的に伝導することができる。
In the present invention, a heat transfer plate is attached to the surface of the circuit board opposite to the surface on which the resistor pattern is formed, and the surface of the heat transfer plate not facing the circuit board is attached to the surface of the case. It is characterized by being exposed.
Thereby, heat can be efficiently conducted from the resistor pattern to the surface of the case through the heat transfer plate having good heat conduction efficiency. Therefore, if the surface of the case where the heat transfer plate is exposed is brought into contact as a contact surface to the heated body, heat can be more effectively conducted to the heated body.

本発明に係るヒーター抵抗器によれば、寸法精度が良くて熱の伝導効率を高くでき、また製造が容易で製造コストの低減化を図ることもできる。   According to the heater resistor according to the present invention, the dimensional accuracy is good, the heat conduction efficiency can be increased, the manufacturing is easy, and the manufacturing cost can be reduced.

ヒーター抵抗器1の斜視図である。1 is a perspective view of a heater resistor 1. FIG. ヒーター抵抗器1を下面側から見た斜視図である。It is the perspective view which looked at the heater resistor 1 from the lower surface side. ヒーター抵抗器1の分解斜視図である。2 is an exploded perspective view of a heater resistor 1. FIG. 図1のA−A断面拡大図である。It is an AA cross-sectional enlarged view of FIG. 図1のB−B断面拡大図である。It is a BB cross-sectional enlarged view of FIG. 回路基板10と金属板50を下側から見た斜視図である。It is the perspective view which looked at the circuit board 10 and the metal plate 50 from the lower side. ヒーター抵抗器1の製造方法説明図である。It is manufacturing method explanatory drawing of the heater resistor. ヒーター抵抗器1の製造方法説明図である。It is manufacturing method explanatory drawing of the heater resistor.

以下、本発明の実施形態を図面を参照して詳細に説明する。図1は本発明の1実施形態に係るヒーター抵抗器1の斜視図、図2はヒーター抵抗器1を下面側から見た斜視図、図3はヒーター抵抗器1の分解斜視図(但し実際は、下記する回路基板10や金属板50等はケース60内にインサート成形されているので分解できない)、図4は図1のA−A断面拡大図、図5は図1のB−B断面拡大図、図6は回路基板10と金属板50を下側から見た斜視図である。また図7,図8は、ヒーター抵抗器1の製造方法説明図である。なお以下の説明において、「上」、「上面」とは下記する金属板50から下記する回路基板10を見る側をいい、「下」、「下面」とはその反対方向をいうものとする。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a heater resistor 1 according to an embodiment of the present invention, FIG. 2 is a perspective view of the heater resistor 1 viewed from the lower surface side, and FIG. 3 is an exploded perspective view of the heater resistor 1 (however, The circuit board 10 and the metal plate 50 described below are insert-molded in the case 60 and cannot be disassembled), FIG. 4 is an enlarged sectional view taken along the line AA in FIG. 1, and FIG. 5 is an enlarged sectional view taken along the line BB in FIG. 6 is a perspective view of the circuit board 10 and the metal plate 50 as viewed from below. 7 and 8 are explanatory views of a method for manufacturing the heater resistor 1. FIG. In the following description, “upper” and “upper surface” refer to the side of the circuit board 10 described below from the metal plate 50 described below, and “lower” and “lower surface” refer to the opposite directions.

ヒーター抵抗器1は、図3に示すように、回路基板10と、先端に接続端子35を取り付けた一対のリード線30と、伝熱板(以下「金属板」という)50とを、ケース60内にインサート成形して構成されている。そしてヒーター抵抗器1の下面を、被加熱体への当接面1a(図2参照)としている。   As shown in FIG. 3, the heater resistor 1 includes a circuit board 10, a pair of lead wires 30 with connection terminals 35 attached to the tips, and a heat transfer plate (hereinafter referred to as “metal plate”) 50. It is constructed by insert molding inside. And the lower surface of the heater resistor 1 is used as the contact surface 1a (refer FIG. 2) to the to-be-heated body.

回路基板10は、略矩形状(長方形状)の硬質の絶縁基板11の上面(表面)に、発熱用の抵抗体パターン13と、抵抗体パターン13の両端に接続される一対の端子接続パターン15,15とを形成して構成されている。絶縁基板11は、合成樹脂(例えばナイロンやポリフェニレンスルフイド等)を成形することによって構成されている。抵抗体パターン13は発熱体であり、カーボンペーストをスクリーン印刷すること等によって、絶縁基板11の長手方向に向かって帯状に形成されている。一方の端子接続パターン15の一端は抵抗体パターン13の一方の端部13a側に接続されてそのまま直線状に引き出され、その他端は、絶縁基板11の短い側の辺11a近傍に配置される。他方の端子接続パターン15の一端は抵抗体パターン13の他方の端部13b側に接続されて前記絶縁基板11の辺11a側に向かうように折り返されて抵抗体パターン13の側部を平行に引き出された後、その他端は、前記絶縁基板11の辺11a近傍に配置される。両端子接続パターン15,15は、銀ペーストをスクリーン印刷すること等によって形成されている。両端子接続パターン15,15の辺11a側の端部には、図6,図7に示すように、円形の貫通孔からなる接続端子固定部16,16が形成されている。また絶縁基板11の長手方向を向く両辺11b,11cの所定位置からは一対の突起21が突出しており、両突起21の上面には、これを横断する溝23が形成されている。また絶縁基板11の辺11aに対向する側の辺11dの所定位置からも突起25が突出しており、突起25には、これを横断するように溝27が形成されている。また回路基板10の下面の下記する金属板50に設けた一対の位置決め部51に対向する位置には、これら位置決め部51を圧入する凹状の位置決め部29(図6参照)が設けられている。   The circuit board 10 has a heat generating resistor pattern 13 and a pair of terminal connection patterns 15 connected to both ends of the resistor pattern 13 on an upper surface (front surface) of a substantially rectangular (rectangular) hard insulating substrate 11. , 15 are formed. The insulating substrate 11 is configured by molding a synthetic resin (for example, nylon or polyphenylene sulfide). The resistor pattern 13 is a heating element, and is formed in a strip shape in the longitudinal direction of the insulating substrate 11 by screen printing of carbon paste or the like. One terminal connection pattern 15 has one end connected to one end 13a side of the resistor pattern 13 and drawn straight as it is, and the other end is arranged near the side 11a on the short side of the insulating substrate 11. One end of the other terminal connection pattern 15 is connected to the other end portion 13b side of the resistor pattern 13 and is folded back toward the side 11a side of the insulating substrate 11 so that the side portion of the resistor pattern 13 is pulled out in parallel. After that, the other end is disposed in the vicinity of the side 11 a of the insulating substrate 11. Both terminal connection patterns 15 and 15 are formed by screen printing silver paste or the like. As shown in FIGS. 6 and 7, connection terminal fixing portions 16 and 16 each having a circular through hole are formed at the ends of the both terminal connection patterns 15 and 15 on the side 11 a side. A pair of protrusions 21 protrude from predetermined positions on both sides 11b and 11c facing the longitudinal direction of the insulating substrate 11, and a groove 23 is formed on the upper surface of both protrusions 21 so as to cross the protrusions. Further, the protrusion 25 protrudes also from a predetermined position of the side 11d on the side facing the side 11a of the insulating substrate 11, and the protrusion 25 is formed with a groove 27 so as to cross this. A concave positioning portion 29 (see FIG. 6) for press-fitting the positioning portions 51 is provided at a position facing a pair of positioning portions 51 provided on the metal plate 50 described below on the lower surface of the circuit board 10.

リード線30は、図4に示すように、多数本の細い金属線からなる導線31の周囲を絶縁チュ−ブ33で覆った構造であり、絶縁チューブ33の一端から導線31を所定長さ引き出している。   As shown in FIG. 4, the lead wire 30 has a structure in which the periphery of a conducting wire 31 made of a plurality of thin metal wires is covered with an insulating tube 33, and the conducting wire 31 is drawn out from one end of the insulating tube 33 by a predetermined length. ing.

接続端子35は、金属板の一端側を基板取付部37、他端側をリード線取付部39として構成されている。基板取付部37は円板状に形成され、その中央に下方向に向かって円筒状に突出する取付部39(図7参照)が形成されている。リード線取付部39はチューブ固定部41と導線固定部43とを有しており、それぞれ絶縁チューブ33と導線31とをその左右から包むように挟持することで、リード線30に取り付けられている。   The connection terminal 35 is configured such that one end side of the metal plate is a substrate attachment portion 37 and the other end side is a lead wire attachment portion 39. The substrate attachment portion 37 is formed in a disc shape, and an attachment portion 39 (see FIG. 7) that protrudes in a cylindrical shape downward is formed at the center thereof. The lead wire attachment portion 39 has a tube fixing portion 41 and a lead wire fixing portion 43, and is attached to the lead wire 30 by sandwiching the insulating tube 33 and the lead wire 31 from the left and right sides, respectively.

金属板50は、略矩形状の平板であり、前記回路基板10の各位置決め部29に対向する位置にそれぞれ、上方向に突出して位置決め部29に圧入(挿入でもよい)される一対の位置決め部51を形成している。この実施形態では金属板50の材質としてアルミニウムを用いているが、他の種々の金属によって構成しても良く、さらには金属以外の熱伝導の良い材料によって構成しても良い。金属板50の前記各位置決め部51を設けたその下面側には、位置決め部51をプレス加工する際に形成される凹部59(図6参照)が形成されている。また金属板50の、前記一対の接続端子35が位置する側の端部近傍の左右両側には、切欠きからなる接続端子逃げ部53が形成されている。これによって、両接続端子逃げ部53の中央に細帯状の突出部55が形成される。さらに図6に示すように、金属板50の下面の外周辺の所定位置(この例では6か所)には、辺を所定長さ斜めに切り取ってテーパ面としてなるケース係止用凹部57が形成されている。金属板50は、ヒーター抵抗器1の補強板としての機能と、回路基板10の発熱を外部に導出する熱伝導体としての機能を兼用する。   The metal plate 50 is a substantially rectangular flat plate, and protrudes upward at a position facing each positioning portion 29 of the circuit board 10 and is press-fitted into the positioning portion 29 (may be inserted). 51 is formed. In this embodiment, aluminum is used as the material of the metal plate 50. However, the metal plate 50 may be made of other various metals, or may be made of a material having good thermal conductivity other than metal. A concave portion 59 (see FIG. 6) formed when the positioning portion 51 is pressed is formed on the lower surface side of the metal plate 50 where the positioning portions 51 are provided. Further, on both the left and right sides of the metal plate 50 in the vicinity of the end portion on the side where the pair of connection terminals 35 are located, connection terminal relief portions 53 made of notches are formed. As a result, a narrow strip-shaped protrusion 55 is formed at the center of both connection terminal relief portions 53. Further, as shown in FIG. 6, at a predetermined position (six locations in this example) on the outer periphery of the lower surface of the metal plate 50, a case locking recess 57 is formed by cutting a side obliquely by a predetermined length to form a tapered surface. Is formed. The metal plate 50 has both a function as a reinforcing plate of the heater resistor 1 and a function as a heat conductor for deriving heat generated by the circuit board 10 to the outside.

ケース60は、合成樹脂又はゴム(例えばシリコンゴム)又はその他のエラストマー等からなる成形品であって、略矩形状であり、前記回路基板10と金属板50と接続端子35とリード線30の先端部分とを覆って一体化している。ケース60の上面には、複数の略矩形状の凹部61が設けられている。またケース60の下面は、金属板50の下面と共に、被加熱体への当接面1aとなっている。各凹部61は、ケース60の肉厚を薄くすることで、ケース60が冷却した際の変形防止(そり防止)を図っている。また各凹部61の間のリブ63は、ケース60の強度を保つために形成されている。   The case 60 is a molded product made of synthetic resin, rubber (for example, silicon rubber) or other elastomer, and has a substantially rectangular shape. The circuit board 10, the metal plate 50, the connection terminal 35, and the leading end of the lead wire 30. It covers and integrates the part. A plurality of substantially rectangular recesses 61 are provided on the upper surface of the case 60. In addition, the lower surface of the case 60 is a contact surface 1 a to the heated object together with the lower surface of the metal plate 50. Each recess 61 is designed to prevent deformation (warp prevention) when the case 60 is cooled by reducing the thickness of the case 60. The ribs 63 between the recesses 61 are formed to maintain the strength of the case 60.

次に、上記ヒーター抵抗器1の製造方法を説明する。まず、図7に示すように、回路基板10と、接続端子35を取り付けた一対のリード線30と、金属板50とを用意する。そして回路基板10の各接続端子固定部16に、接続端子35の取付部39を挿入し、回路基板10の下面から突出した各取付部39の先端を外方に広がるように鳩目カシメして固定する。次に、回路基板10の下面に密着するように金属板50を設置し、図8に示す状態にする。このとき、金属板50の各位置決め部51を回路基板10の位置決め部29に圧入し、位置決めと固定を行う。同図に示すように金属板50は回路基板10の下面の略全体に当接する。また、回路基板10の下面の鳩目カシメを行った取付部39の部分は、金属板50の接続端子逃げ部53内に位置するので、両者が当接することはない。また金属板50の突出部55は、両接続端子35の間に位置する。そして、上記リード線30を接続した回路基板10と金属板50を、金型に形成したケース60の形状のキャビティー内に収納して前記キャビティー内に溶融樹脂又は溶融ゴム(例えば溶融シリコンゴム)又はその他の溶融エラストマーを注入(インサート成形)すれば、図1に示すヒーター抵抗器1が完成する。このとき前述のように金属板50の下面はケース60の下面に同一面となって露出するが、金属板50の周囲のケース係止用凹部57がケース60に係止されるので、金属板50がケース60から外れることはない。なお上記組立手順はその一例であり、他の各種異なる組立手順を用いて組み立てても良いことはいうまでもない。   Next, a method for manufacturing the heater resistor 1 will be described. First, as shown in FIG. 7, a circuit board 10, a pair of lead wires 30 to which connection terminals 35 are attached, and a metal plate 50 are prepared. Then, the attachment portions 39 of the connection terminals 35 are inserted into the connection terminal fixing portions 16 of the circuit board 10, and the tip of each attachment portion 39 protruding from the lower surface of the circuit board 10 is crimped and fixed so as to spread outward. To do. Next, the metal plate 50 is installed so as to be in close contact with the lower surface of the circuit board 10 to obtain the state shown in FIG. At this time, each positioning portion 51 of the metal plate 50 is press-fitted into the positioning portion 29 of the circuit board 10 to perform positioning and fixing. As shown in the figure, the metal plate 50 contacts substantially the entire lower surface of the circuit board 10. Further, the portion of the attachment portion 39 where the eyelet of the lower surface of the circuit board 10 is crimped is located in the connection terminal escape portion 53 of the metal plate 50, so that they do not contact each other. Further, the protruding portion 55 of the metal plate 50 is located between the connection terminals 35. Then, the circuit board 10 and the metal plate 50 to which the lead wires 30 are connected are accommodated in a cavity having a shape of a case 60 formed in a mold, and molten resin or molten rubber (for example, molten silicon rubber) is contained in the cavity. ) Or other molten elastomer is injected (insert molding), the heater resistor 1 shown in FIG. 1 is completed. At this time, as described above, the lower surface of the metal plate 50 is exposed on the same surface as the lower surface of the case 60, but the case locking recess 57 around the metal plate 50 is locked to the case 60. 50 does not come off the case 60. The above assembling procedure is an example, and it goes without saying that the assembly may be performed using other various assembling procedures.

そして、前記両リード線30間に通電を行えば、抵抗体パターン13が発熱し、その熱の多くは回路基板10から金属板50に伝達され、金属板50下面の露出面を発熱する。従ってこの露出面を含むヒーター抵抗器1の当接面1aを各種被加熱体の表面に当接(できれば密着)すれば、効率よく前記抵抗体パターン13によって発生した熱を被加熱体に供給することができる。   When the lead wires 30 are energized, the resistor pattern 13 generates heat, and most of the heat is transmitted from the circuit board 10 to the metal plate 50 to generate heat on the exposed surface of the lower surface of the metal plate 50. Therefore, if the contact surface 1a of the heater resistor 1 including the exposed surface is contacted (preferably adhered) to the surfaces of various heated objects, the heat generated by the resistor pattern 13 is efficiently supplied to the heated objects. be able to.

以上説明したように、ヒーター抵抗器1は、表面に発熱用の抵抗体パターン13と、抵抗体パターン13に接続される端子接続パターン15とを形成した回路基板10と、回路基板10の端子接続パターン15に接続される接続端子35を取り付けたリード線30と、回路基板10の接続端子35との接続箇所と、接続端子35を取り付けたリード線30の先端部分とを、回路基板10と共に一体にインサート成形によって覆うケース60と、を具備して構成したので、ケース10をインサート成形による成形品によって構成でき、これによって寸法精度を容易に高めることができる。このため、ヒーター抵抗器1の、被加熱体への当接面を被加熱体の表面の形状に合わせて容易に密着させることが可能となり、熱伝導効率を高めることができる。また、製造が容易で、製造コストの低減化も図ることが可能になる。また回路基板10と共に、接続端子35とリード線30も合わせてケース60内にインサート成形するので、例えケース60から突出しているリード線30の部分に強い力が加わっても、リード線30と接続端子35との接続状態、接続端子35と回路基板10との接続状態が劣化することはなく、これら各部品間の確実な接続状態を維持することができる。   As described above, the heater resistor 1 includes the circuit board 10 on the surface of which the heating resistor pattern 13 and the terminal connection pattern 15 connected to the resistor pattern 13 are formed, and the terminal connection of the circuit board 10. The connection portion between the lead wire 30 attached with the connection terminal 35 connected to the pattern 15 and the connection terminal 35 of the circuit board 10 and the tip portion of the lead wire 30 attached with the connection terminal 35 are integrated together with the circuit board 10. And the case 60 covered by insert molding, the case 10 can be configured by a molded product by insert molding, thereby easily increasing the dimensional accuracy. For this reason, the contact surface of the heater resistor 1 to the heated body can be easily brought into close contact with the shape of the surface of the heated body, and the heat conduction efficiency can be increased. Further, the manufacturing is easy, and the manufacturing cost can be reduced. In addition, since the connection terminal 35 and the lead wire 30 are also formed in the case 60 together with the circuit board 10, even if a strong force is applied to the portion of the lead wire 30 protruding from the case 60, the connection to the lead wire 30 is possible. The connection state with the terminal 35 and the connection state between the connection terminal 35 and the circuit board 10 are not deteriorated, and a reliable connection state between these components can be maintained.

また上記ヒーター抵抗器1のケース60は、回路基板10の抵抗体パターン13と端子接続パターン15を形成した部分全体を覆っているので、回路基板10の電気的動作を行う部分全体をケース60で覆うことができ、効果的な防水等を行うことができる。   Further, the case 60 of the heater resistor 1 covers the entire portion of the circuit board 10 where the resistor pattern 13 and the terminal connection pattern 15 are formed. It can be covered and effective waterproofing can be performed.

また回路基板10の抵抗体パターン13を形成した面の反対側の面に金属板50を取り付け、さらに金属板50の回路基板10に対向しない側の面をケース60の表面に露出させたので、抵抗体パターン13から熱伝導効率のよい金属板50を介してヒーター抵抗器1の表面(当接面1a)に効率よく熱を伝導することができる。従ってこの金属板50の露出面を被加熱体への当接面1aの一部として当接することで、被加熱体に熱をより効果的に伝導することができる。   In addition, since the metal plate 50 is attached to the surface of the circuit board 10 opposite to the surface on which the resistor pattern 13 is formed, and the surface of the metal plate 50 on the side not facing the circuit board 10 is exposed on the surface of the case 60. Heat can be efficiently conducted from the resistor pattern 13 to the surface (contact surface 1a) of the heater resistor 1 through the metal plate 50 having good heat conduction efficiency. Accordingly, by contacting the exposed surface of the metal plate 50 as a part of the contact surface 1a to the heated body, heat can be more effectively conducted to the heated body.

またインサート成形するケース60を、ゴムやエラストマーで構成した場合は、弾性があるので、ケース60内にインサートする部材とケース60との密着性がさらに向上し、防水に好適である。   Further, when the case 60 to be insert-molded is made of rubber or elastomer, there is elasticity, so that the adhesion between the member to be inserted into the case 60 and the case 60 is further improved, which is suitable for waterproofing.

以上本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲、及び明細書と図面に記載された技術的思想の範囲内において種々の変形が可能である。なお直接明細書及び図面に記載がない何れの形状や構造や材質であっても、本願発明の作用・効果を奏する以上、本願発明の技術的思想の範囲内である。例えば上記実施形態では、接続端子の取付部を回路基板の接続端子固定部に鳩目カシメによって取り付けたが、本発明はこれに限定されず、ネジやその他の各種取付手段によって取り付けても良い。また上記実施形態ではヒーター抵抗器下面の当接面(金属板の露出面を含む)を平面状に形成したが、被加熱体の表面形状に合わせて湾曲面等の各種形状に形成しても良い。その場合、金属板の形状も合わせて変更することが好ましい。また上記実施形態では、抵抗体パターンと端子接続パターンをスクリーン印刷によって形成したが、他の印刷方法やエッチングなどの他の各種方法によって形成しても良い。抵抗体パターンや端子接続パターンの形状に種々の変形が可能であることは言うまでもない。また上記実施形態では、回路基板の抵抗体パターンと端子接続パターンを形成した部分全体を覆うようにケースを構成したが、回路基板全体ではなく、少なくとも回路基板の接続端子との接続箇所と、接続端子を取り付けたリード線の先端部分とを、回路基板の一部と共に一体にインサート成形によって覆うものであってもよい。また場合によっては、金属板を省略しても良い。また場合によっては、金属板は露出させず、ケース内に内蔵させても良い。金属板を省略する場合は、回路基板をケースの底面に露出させても良いし、また回路基板がケースから剥離してしまうのを防ぐために、回路基板の底面をケースで覆っても良い。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above embodiment, the attachment portion of the connection terminal is attached to the connection terminal fixing portion of the circuit board by eyelet caulking, but the present invention is not limited to this, and may be attached by screws or other various attachment means. In the above embodiment, the contact surface of the lower surface of the heater resistor (including the exposed surface of the metal plate) is formed in a flat shape, but may be formed in various shapes such as a curved surface in accordance with the surface shape of the object to be heated. good. In that case, it is preferable to change the shape of the metal plate. Moreover, in the said embodiment, although the resistor pattern and the terminal connection pattern were formed by screen printing, you may form by other various methods, such as another printing method and an etching. It goes without saying that various modifications can be made to the shape of the resistor pattern and the terminal connection pattern. Moreover, in the said embodiment, although the case was comprised so that the part which formed the resistor pattern and terminal connection pattern of a circuit board might be covered, not the whole circuit board but the connection location with the connection terminal of a circuit board, and a connection You may cover the front-end | tip part of the lead wire which attached the terminal with insert molding integrally with a part of circuit board. In some cases, the metal plate may be omitted. In some cases, the metal plate may be built in the case without exposing it. When the metal plate is omitted, the circuit board may be exposed on the bottom surface of the case, or the bottom surface of the circuit board may be covered with the case in order to prevent the circuit board from peeling from the case.

また、上記記載及び各図で示した実施形態は、その目的及び構成等に矛盾がない限り、互いの記載内容を組み合わせることが可能である。また、上記記載及び各図の記載内容は、その一部であっても、それぞれ独立した実施形態になり得るものであり、本発明の実施形態は上記記載及び各図を組み合わせた一つの実施形態に限定されるものではない。   Moreover, as long as there is no contradiction in the objective, a structure, etc., the embodiment shown by the said description and each figure can combine the description content of each other. In addition, the above description and the description of each drawing can be an independent embodiment even if it is a part of it, and the embodiment of the present invention is an embodiment in which the above description and each drawing are combined. It is not limited to.

1 ヒーター抵抗器
10 回路基板
13 抵抗体パターン
15 端子接続パターン
30 リード線
35 接続端子
50 金属板(伝熱板)
60 ケース
DESCRIPTION OF SYMBOLS 1 Heater resistor 10 Circuit board 13 Resistor pattern 15 Terminal connection pattern 30 Lead wire 35 Connection terminal 50 Metal plate (heat-transfer plate)
60 cases

Claims (3)

表面に発熱用の抵抗体パターンと、前記抵抗体パターンに接続される端子接続パターンとを形成した回路基板と、
前記回路基板の端子接続パターンに接続される接続端子を取り付けたリード線と、
少なくとも前記回路基板の前記接続端子との接続箇所と、前記接続端子を取り付けたリード線の先端部分とを、前記回路基板と共に一体にインサート成形によって覆うケースと、
を具備することを特徴とするヒーター抵抗器。
A circuit board on the surface of which a heating resistor pattern and a terminal connection pattern connected to the resistor pattern are formed;
A lead wire with a connection terminal connected to the terminal connection pattern of the circuit board;
A case in which at least a connection portion of the circuit board with the connection terminal and a tip portion of a lead wire to which the connection terminal is attached are integrally formed with the circuit board by insert molding;
A heater resistor comprising:
請求項1に記載のヒーター抵抗器であって、
前記ケースは、さらに前記回路基板の抵抗体パターンと端子接続パターンを形成した部分全体を覆っていることを特徴とするヒーター抵抗器。
The heater resistor according to claim 1,
The heater resistor further covers an entire portion of the circuit board where the resistor pattern and the terminal connection pattern are formed.
請求項1又は2に記載のヒーター抵抗器であって、
前記回路基板の前記抵抗体パターンを形成した面の反対側の面に伝熱板を取り付け、さらに前記伝熱板の前記回路基板に対向しない側の面を前記ケースの表面に露出させたことを特徴とするヒーター抵抗器。
The heater resistor according to claim 1 or 2,
A heat transfer plate is attached to the surface of the circuit board opposite to the surface on which the resistor pattern is formed, and the surface of the heat transfer plate not facing the circuit board is exposed on the surface of the case. Features a heater resistor.
JP2016240330A 2016-12-12 2016-12-12 Heater resistor Pending JP2018098002A (en)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102477745B1 (en) * 2021-07-02 2022-12-15 인탑스 주식회사 Manufacturing method for injection molded product comprising heating material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102477745B1 (en) * 2021-07-02 2022-12-15 인탑스 주식회사 Manufacturing method for injection molded product comprising heating material

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