JPH0449914A - Electric water heater - Google Patents
Electric water heaterInfo
- Publication number
- JPH0449914A JPH0449914A JP15594190A JP15594190A JPH0449914A JP H0449914 A JPH0449914 A JP H0449914A JP 15594190 A JP15594190 A JP 15594190A JP 15594190 A JP15594190 A JP 15594190A JP H0449914 A JPH0449914 A JP H0449914A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- temperature detection
- detection unit
- temperature detecting
- detecting unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 14
- 238000003780 insertion Methods 0.000 claims abstract description 17
- 230000037431 insertion Effects 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 44
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000035882 stress Effects 0.000 description 6
- 239000000758 substrate Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電気湯沸し器などに用いる温度検知ユニットの
接続構成に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connection structure for a temperature detection unit used in an electric water heater or the like.
従来の技術
従来、この種の電気湯沸し器の温度検知ユニットの接続
構成は、第４図に示すようになっている。2. Description of the Related Art Conventionally, the connection configuration of the temperature detection unit of this type of electric water heater is as shown in FIG.
すなわち容器３ｏの底部に発熱体３１を設け、また、容
器３０の底面中央部に温度検知ユニット３３を当接し、
この温度検知ユニット３３の信号をリード線３５により
電気湯沸し器の制御二二ソ）３４の基板へコネクタ３６
を介して接続していた。That is, a heating element 31 is provided at the bottom of the container 3o, and a temperature detection unit 33 is brought into contact with the center of the bottom of the container 30.
The signal from this temperature detection unit 33 is sent via a lead wire 35 to a connector 36 on the board of the electric water heater control unit 34.
was connected via.
また、温度検知ユニット３３は押えばね３７を用い、遮
熱板３８にねじ３９によシ取付け、制御ユニット３４は
取付金具４０を介してカバー４１に取付けるよう構成さ
れていた。Further, the temperature detection unit 33 was configured to be attached to a heat shield plate 38 with screws 39 using a pressing spring 37, and the control unit 34 was configured to be attached to a cover 41 via a mounting bracket 40.
発明が解決しようとする課題
このような従来の構成では、容器３０の底面に発熱体３
１を設けているため、容器３０の底面の裏面側は高温と
なり、温度検知ユニット３３のリード線３５の遮熱処理
をしないと、発熱体３１からの熱を受けて温度検知ユニ
ット３３の感温特性が変化することがある。筐だ、この
リード線３６を高温部にふれないように固定処理したり
、あるいは、リード線３５が金属部品の端面のエツジ部
に触れて、振動により摩耗し、絶縁被覆が破れて絶縁不
良を起こすことがないように、リード線３５を保護する
必要があった。このよう々リード線３５の損傷を防ぐた
めに、カバー４１の一部にリード線３５をフックするな
どして、リード線３５を固定して保護していた。したが
って、リード線処理をするために組立に長時間を要して
いた。また、コネクタ３６を基板側のコネクタに差込む
とき、差込みが不完全でコネクタが浮き上ったシして、
接触不良を起こしていた。Problems to be Solved by the Invention In such a conventional configuration, the heating element 3 is placed on the bottom of the container 30.
1, the back side of the bottom of the container 30 becomes high temperature, and if the lead wire 35 of the temperature detection unit 33 is not heat shielded, the temperature sensing characteristics of the temperature detection unit 33 will be affected by the heat from the heating element 31. may change. The lead wire 36 should be fixed so that it does not come into contact with high-temperature parts, or the lead wire 35 may come into contact with the edge of the end face of a metal component and wear due to vibration, causing the insulation coating to tear and lead to poor insulation. It was necessary to protect the lead wire 35 to prevent this from happening. In order to prevent the lead wire 35 from being damaged in this manner, the lead wire 35 is fixed and protected by, for example, hooking the lead wire 35 to a part of the cover 41. Therefore, assembly requires a long time to process the lead wires. Also, when inserting the connector 36 into the connector on the board side, the insertion may be incomplete and the connector may come up.
There was a poor contact.
また、遮熱板３８側に温度検知ユニット３３を押えばね
３７で取付けているため、制御ユニット３４を取付ける
ときリード線３５や、コネクタ３６の固定処理をする必
要があった。Further, since the temperature detection unit 33 is attached to the heat shield plate 38 side with a pressing spring 37, it is necessary to fix the lead wire 35 and the connector 36 when attaching the control unit 34.
さらに、温度検知ユニット３３の取付けは、押えばね３
７をビヌなどにより取付けているので、温度検知ユニッ
ト３３の取付けにも時間を要するという課題があった。Furthermore, the installation of the temperature detection unit 33 is performed using the pressing spring 3.
7 is attached using screws or the like, there is a problem in that it also takes time to attach the temperature detection unit 33.
本発明はこのような課題を解決するもので、温度検知部
と基板の接続操作が簡単で、かつ確実に接続でき、さら
に回路基板に応力が加わらない、しかも断熱効果の大き
な接続を実現することを目的とするものである。The present invention solves these problems, and aims to realize a connection between the temperature sensing section and the board that is simple and reliable, that does not apply stress to the circuit board, and that has a large heat insulation effect. The purpose is to
課題を解決するための手段
この目的を達成するために本発明の電気湯沸し器は、液
体を収容する容器の底部に設けられた発熱体と、温度検
知部と端子で構成され、前記容器の底部に当接させる温
度検知ユニットと、前記温度検知ユニットの信号を受け
る制御ユニットと、制御ユニットの電気部品を装着し、
前記温度検知ユニットの下方に配置された基板と、前記
基板を覆うカバーとを備え、前記温度検知ユニットの端
子に対応する端子受けを前記基板に設け、端子の挿入を
案内するガイドピンを前記温度検知ユニットに設けた構
成としたものである。Means for Solving the Problems To achieve this object, the electric water heater of the present invention comprises a heating element provided at the bottom of a container containing liquid, a temperature detection section, and a terminal, a temperature detection unit that is brought into contact with the temperature detection unit, a control unit that receives a signal from the temperature detection unit, and electrical components of the control unit,
The board includes a board disposed below the temperature detection unit and a cover that covers the board, a terminal receiver corresponding to the terminal of the temperature detection unit is provided on the board, and a guide pin for guiding the insertion of the terminal is connected to the temperature detection unit. This configuration is provided in the detection unit.
また、温度検知ユニットの端子を弾性変形し易い形状に
形成したものである。Moreover, the terminal of the temperature detection unit is formed into a shape that is easily elastically deformed.
また、温度検知ユニットの端子に、端子受けへの挿入深
さ規制部を形成したものである。Further, a portion for regulating the insertion depth into the terminal receiver is formed on the terminal of the temperature detection unit.
作 用
上記本発明の電気湯沸し器は、温度検知ユニットと温度
制御ユニットをリード線を用いないで直接接続し、ガイ
ドピンにより端子を挿入時の位置合せと端子挿入後の位
置固定をするものである。Function The electric water heater of the present invention connects the temperature detection unit and the temperature control unit directly without using lead wires, and uses guide pins to align the terminal when it is inserted and to fix the position after the terminal is inserted. be.
また、制御ユニットの端子受は部に端子を挿入するとき
や挿入後に、基板に機械応力や熱応力が加わらないよう
、挿入する端子部自体が弾性変形して、各種の応力を緩
知するものである。In addition, the terminal holder of the control unit is designed to elastically deform itself to absorb various types of stress, so that mechanical stress and thermal stress are not applied to the board when or after the terminal is inserted. It is.
また、端子を端子受に挿入するとき、挿入深さを端子の
位置規制部で規制するものである。Furthermore, when inserting the terminal into the terminal holder, the insertion depth is regulated by the terminal position regulating portion.
実施例 以下本発明の実施例を添付図面を参照して説明する。Example Embodiments of the present invention will be described below with reference to the accompanying drawings.
第１図に示すように発熱体１を有する容器２内に液体を
収容して、発熱体１によシ容器２内の液体を加熱するよ
うにしている。この発熱体１０下方に、発熱体１の熱を
遮断する遮熱板３が設けられている。また、遮熱板３に
は電動ポンプ（図示せず）や温度ヒユーズ（図示せず）
を取付けている。前記容器２の下方には電気湯沸し器の
湯沸しや保温状態のコントロールを行なう制御部と電源
部などで構成された制御ユニット６が配置されている。As shown in FIG. 1, a liquid is contained in a container 2 having a heating element 1, and the liquid in the container 2 is heated by the heating element 1. A heat shield plate 3 is provided below the heating element 10 to block heat from the heating element 1. The heat shield plate 3 also includes an electric pump (not shown) and a temperature fuse (not shown).
is installed. A control unit 6 is disposed below the container 2 and is comprised of a control section and a power supply section for controlling the water heating and heat retention state of the electric water heater.
この制御ユニット６における制御用の電子部品８は基板
７に取付けられ、基板７はカバー９により覆われている
。温度検知ユニット６は感熱部１０と下方に延びだ端子
１１で構成され、感熱部１゜はサーミスタなどの感熱素
子１２で構成されている。さらに温度検知ユニット６は
端子１１と同方向に、かつ端子１１の先端よシ長いガイ
ドピン１３を有している。Control electronic components 8 in this control unit 6 are attached to a board 7 , and the board 7 is covered with a cover 9 . The temperature detection unit 6 is composed of a heat sensitive section 10 and a downwardly extending terminal 11, and the heat sensitive section 1° is composed of a heat sensitive element 12 such as a thermistor. Furthermore, the temperature detection unit 6 has a guide pin 13 that extends in the same direction as the terminal 11 and is longer than the tip of the terminal 11.
さらに基板７には温度検知ユニット６の端子１１を挿入
する端子受け１４を有するコネクタ１５を設け、温度検
知ユニット６の端子１１と端子受け１４とが直接接続さ
れるようにガっている。Further, the board 7 is provided with a connector 15 having a terminal receiver 14 into which the terminal 11 of the temperature detection unit 6 is inserted, and is arranged so that the terminal 11 of the temperature detection unit 6 and the terminal receiver 14 are directly connected.
そして基板７には前記温度検知ユニット６のガイドピン
１３に対応して一対の孔１６を設けている。前記端子１
１は弾性を有し、その中腹には略Ｕ字形状をした挿入深
さ規制部１８を設けている。A pair of holes 16 are provided in the substrate 7 to correspond to the guide pins 13 of the temperature detection unit 6. Said terminal 1
1 has elasticity, and is provided with an approximately U-shaped insertion depth regulating portion 18 in the middle thereof.
上記構成において、温度検知ユニット６を、あらかじめ
、その端子１１を基板７に設けられた端子受け１４に直
接挿入する。この場合ガイドピン１３が基板７の孔１６
に挿入され、前記端子１１は端子受け１４に位置を合わ
、せてガイドされる。In the above configuration, the terminal 11 of the temperature detection unit 6 is directly inserted into the terminal receiver 14 provided on the board 7 in advance. In this case, the guide pin 13 is connected to the hole 16 of the board 7.
The terminal 11 is aligned with the terminal receiver 14 and guided.
さらに端子１１に設けた挿入深さ規制部１８がカバー９
に当たり、端子１１の端子受け１４への挿入深さは適正
に保たれる。このように温度検知ユニット６はリード線
を用いることなく端子受け１４に接続され、かつ、基板
７に固定化されるので、接続作業が容易になる。また、
基板７に温度検知ユニット６を取付けた状態で、上方に
容器２を組み立てることによシ、温度検知ユニット６の
感熱部１０は容器２の底部に圧接する。この場合、端子
１１が弾性をもっているので、特に略Ｕ字形形状の挿入
深さ規制部１８が機能して前記圧接を助成する。さらに
、端子１１０寸法誤差が吸収され、熱変形があっても安
定な温度検知ユニット６の容器２への接触が得られる。Further, the insertion depth regulating portion 18 provided on the terminal 11 is inserted into the cover 9.
In this case, the insertion depth of the terminal 11 into the terminal receiver 14 is maintained appropriately. In this way, the temperature detection unit 6 is connected to the terminal receiver 14 and fixed to the substrate 7 without using lead wires, so that the connection work is facilitated. Also,
By assembling the container 2 above with the temperature detection unit 6 attached to the substrate 7, the heat sensitive portion 10 of the temperature detection unit 6 is brought into pressure contact with the bottom of the container 2. In this case, since the terminal 11 has elasticity, the substantially U-shaped insertion depth regulating section 18 in particular functions to assist the pressure welding. Furthermore, the dimensional error of the terminal 110 is absorbed, and even if there is thermal deformation, stable contact of the temperature detection unit 6 with the container 2 can be obtained.
第２図は本発明の他の実施例を示し、このものは、端子
１１の挿入深さ規制部１８が基板７に当たるようにした
ものである。このものも前述の第１図に示したものと作
用効果は同じである。FIG. 2 shows another embodiment of the present invention, in which the insertion depth regulating portion 18 of the terminal 11 is brought into contact with the substrate 7. This device also has the same functions and effects as the device shown in FIG. 1 above.
第３図に示す本発明の他の実施例のものは、２つのガイ
ドピン１３を用い、さらに、温度検知ユニットにおける
感熱部１Ｑが容器２の底部２′に圧接するための押えば
ね１９を設けたものである。Another embodiment of the present invention shown in FIG. 3 uses two guide pins 13 and is further provided with a presser spring 19 for pressing the heat sensitive part 1Q of the temperature detection unit against the bottom 2' of the container 2. It is something that
この構成のものによれば、端子１１に弾性を付与しなく
てもすむので、直棒状の端子とすることができ、また、
端子１１の端子受け１４への挿入ガイドを確実にするこ
とができる。According to this configuration, since it is not necessary to impart elasticity to the terminal 11, it is possible to use a straight bar-shaped terminal, and also,
The insertion guide of the terminal 11 into the terminal receiver 14 can be ensured.
発明の効果
以上の実施例の説明からも明らか々ように本発明によれ
ば、温度検知ユニットを電気制御部のコネクタに接続す
るとき、端子を挿入する前にガイドピンを挿入してガイ
ドして位置決めをするので、端子が屈曲するような応力
が加わらない。Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, when connecting the temperature detection unit to the connector of the electrical control section, a guide pin is inserted and guided before the terminal is inserted. Since the terminals are positioned, stress that would bend the terminals is not applied.
さらに、プリント基板に設けられた端子受けに応力が加
わらないので、端子受の半田付部に応力が加わって起こ
るプリント基板の銅箔剥離を防止できる。Furthermore, since no stress is applied to the terminal receiver provided on the printed circuit board, it is possible to prevent the copper foil from peeling off from the printed circuit board, which would otherwise occur due to stress being applied to the soldered portion of the terminal receiver.
また、基板の半田付面方向に端子が挿入され、かつ、端
子の屈曲した挿入深さ規制部がプリント基板または遮熱
板に当接するので、端子は必らず一定の深さに挿入され
、安定な接続を保つことができる。In addition, since the terminal is inserted in the direction of the soldering surface of the board, and the bent insertion depth regulating part of the terminal comes into contact with the printed circuit board or heat shield, the terminal is always inserted at a certain depth. A stable connection can be maintained.
さらに、基板を覆っているカバーと、検知ユニットとの
間に押えばねを設けて圧接しているので、遮熱板のうき
や取付は状態に影響をうけないで温度検知ユニットを容
器底面に圧接できる。その結果、安定した温度検知が可
能になる。Furthermore, since a pressure spring is provided between the cover covering the board and the detection unit, the temperature detection unit can be pressed against the bottom of the container without being affected by the mounting or installation of the heat shield. can. As a result, stable temperature detection becomes possible.
また、リード線処理や押えばねのビス締などの作業がな
くなシ組立が簡単にでき、組立て工数も削減できるとい
う効果がある。In addition, there is no need for work such as processing lead wires or tightening screws for presser springs, making assembly easier and reducing assembly man-hours.
第１図は本発明の一実施例の電気湯沸し器の要部断面図
、第２図および第３図はそれぞれ本発明の他の実施例の
要部拡大断面図、第４図は従来の電気湯沸し器の断面図
である。
２・・・・・・容器、５・・・・・・制御ユニット、６
・・・・・・温度検知ユニット、７・・・・・・基板、
１ｏ・・・・・・感熱部、１１・・・・・・端子、１３
・・・・・・ガイドピン、１４・・・・・・端子受け、
１５・・・・・・コネクタ、１８・・・・・・挿入深さ
規制部。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名２−
一一宕呑
１−−一争琢妊ユニ・・１１
１１− 端＋
１３−一一力ゞイトヒ１ソ
１４−婢）も１
１丁−一一コ千クグFIG. 1 is a sectional view of the essential parts of an electric water heater according to an embodiment of the present invention, FIGS. 2 and 3 are enlarged sectional views of essential parts of other embodiments of the invention, and FIG. 4 is a conventional electric water heater. It is a sectional view of a water heater. 2... Container, 5... Control unit, 6
...Temperature detection unit, 7... Board,
1o...Thermal sensitive part, 11...Terminal, 13
...Guide pin, 14...Terminal holder,
15... Connector, 18... Insertion depth regulating part. Name of agent: Patent attorney Shigetaka Awano and 1 other person2-
11 eating and drinking 1--11 11-11
Claims (3)
、温度検知部と端子で構成され、前記容器の底部に当接
させられる温度検知ユニットと、前記温度検知ユニット
を制御する制御ユニットと、容器の下方に配設され、前
記制御ユニットの電気部品を装着した基板と、前記基板
を覆うカバーとを備え、前記温度検知ユニットの端子に
対応する端子受けを前記基板に設け、温度検知ユニット
の端子の挿入を案内するガイドピンを前記温度検知ユニ
ットに設けた電気湯沸し器。(1) A heating element provided at the bottom of a container containing liquid, a temperature detection unit that is made up of a temperature detection section and a terminal and is brought into contact with the bottom of the container, and a control unit that controls the temperature detection unit. a board disposed below the container, on which electrical components of the control unit are mounted, and a cover covering the board; a terminal receiver corresponding to the terminal of the temperature detection unit is provided on the board; An electric water heater in which the temperature detection unit is provided with a guide pin that guides insertion of a terminal of the unit.
で形成した請求項１記載の電気湯沸し器。(2) The electric water heater according to claim 1, wherein the terminal of the temperature detection unit is formed of an elastic material that is easily deformed.
さを規制する略Ｕ字状に屈曲した規制部を形成した請求
項１記載の電気湯沸し器。(3) The electric water heater according to claim 1, wherein the terminal of the temperature detection unit is provided with a regulating portion bent in a substantially U-shape for regulating the depth of insertion into the terminal receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155941A JP2775998B2 (en) | 1990-06-14 | 1990-06-14 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155941A JP2775998B2 (en) | 1990-06-14 | 1990-06-14 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0449914A true JPH0449914A (en) | 1992-02-19 |
| JP2775998B2 JP2775998B2 (en) | 1998-07-16 |
Family
ID=15616869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2155941A Expired - Fee Related JP2775998B2 (en) | 1990-06-14 | 1990-06-14 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2775998B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5944923U (en) * | 1982-09-10 | 1984-03-24 | 株式会社東芝 | Cooking device |
| JPS63147122A (en) * | 1986-12-11 | 1988-06-20 | Fuji Photo Optical Co Ltd | Objective system after temperature compensation |
-
1990
- 1990-06-14 JP JP2155941A patent/JP2775998B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5944923U (en) * | 1982-09-10 | 1984-03-24 | 株式会社東芝 | Cooking device |
| JPS63147122A (en) * | 1986-12-11 | 1988-06-20 | Fuji Photo Optical Co Ltd | Objective system after temperature compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2775998B2 (en) | 1998-07-16 |
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