JPH06333490A - Terminal cover - Google Patents
Terminal coverInfo
- Publication number
- JPH06333490A JPH06333490A JP12273393A JP12273393A JPH06333490A JP H06333490 A JPH06333490 A JP H06333490A JP 12273393 A JP12273393 A JP 12273393A JP 12273393 A JP12273393 A JP 12273393A JP H06333490 A JPH06333490 A JP H06333490A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- terminal
- input
- terminal cover
- detecting means
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/0264—Protective covers for terminals
Landscapes
- Breakers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、配線用遮断器や漏電遮
断器等の電気機器の端子部を覆う端子カバーに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal cover for covering a terminal portion of an electric device such as a circuit breaker for wiring or an earth leakage circuit breaker.
【０００２】[0002]
【従来の技術】一般に、電気機器の入出力端子に電路電
源及び負荷を接続する場合、電線導体を接続することに
よって行うのであるが、この電線導体を接続する端子螺
子の締め付けが緩い場合、端子及び電線導体が発熱して
電線導体を焼き切ることがあり、大変危険であった。2. Description of the Related Art Generally, when connecting an electric power source and a load to an input / output terminal of an electric device, it is done by connecting a wire conductor. When the terminal screw connecting the wire conductor is loosely tightened, Also, the wire conductor may generate heat and burn out, which is very dangerous.
【０００３】そこで、本出願人は、実開昭５９−１７０
９５０号に示すものを提案している。このものは、端子
に低温溶融金属からなる可動金具を接合させて、端子の
温度が上昇した場合に、負荷と電路電源とを切り離し、
電線導体が焼き切れるのを防止するものである。Therefore, the applicant of the present invention has filed in Japanese Utility Model Application 59-170.
The proposal shown in No. 950 is proposed. In this product, a movable metal fitting made of low-temperature molten metal is joined to the terminal, and when the temperature of the terminal rises, the load is disconnected from the electric circuit power supply,
It is intended to prevent the electric wire conductor from burning out.
【０００４】[0004]
【発明が解決しようとする課題】上述した低温溶融金属
を使用した場合、端子の温度の上昇に伴って低温溶融金
属が変形し、これによって負荷と電路電源とを切り離し
ているので、再使用するには、低温溶融金属を取り替え
る必要があった。When the above-mentioned low-temperature molten metal is used, the low-temperature molten metal is deformed as the temperature of the terminal rises, thereby disconnecting the load from the power supply for the electric circuit, so that it can be reused. It was necessary to replace the low temperature molten metal.
【０００５】本発明は、かかる事由に鑑みて成したもの
で、その目的とするところは、発熱を検出して入出力端
子間に介挿された接点を強制開極することによって、部
材を取り替えることなく再使用できる端子カバーを提供
することにある。The present invention has been made in view of the above circumstances, and its object is to replace a member by detecting heat generation and forcibly opening a contact inserted between the input and output terminals. It is to provide a terminal cover that can be reused without use.
【０００６】[0006]
【課題を解決するための手段】かかる課題を解決するた
めに、請求項１記載の端子カバーは、電路電源及び負荷
を接続する入出力端子を有した端子部と、入出力端子間
に介挿された接点と、を備えた電気機器の端子部を覆う
端子カバーであって、端子の温度を検出する温度検出手
段と、この温度検出手段によって検出された温度を判別
して接点を強制開極する温度判別手段と、を備えた構成
としてある。In order to solve such a problem, a terminal cover according to a first aspect of the present invention has a terminal portion having an input / output terminal for connecting an electric power source and a load, and an interposing member between the input / output terminal. A terminal cover for covering a terminal portion of an electric device equipped with the contact point and a temperature detecting means for detecting the temperature of the terminal, and forcibly opening the contact by discriminating the temperature detected by the temperature detecting means. And a temperature discriminating means for controlling the temperature.
【０００７】請求項２記載の端子カバーは、請求項１の
ものの温度検出手段を端子部に着脱自在に配設してなる
構成としてある。According to a second aspect of the terminal cover, the temperature detecting means of the first aspect is detachably disposed on the terminal portion.
【０００８】[0008]
【作用】請求項１記載の構成によれば、温度検出手段に
よって検出された温度を温度判別手段によって電路電源
と負荷とを切り離す温度であるか判別し、切り離す温度
であれば接点を強制開極する。According to the structure of the present invention, the temperature detection means determines whether the temperature detected by the temperature detection means is the temperature at which the electric circuit power source and the load are separated, and if the temperature is the separation temperature, the contacts are forcibly opened. To do.
【０００９】請求項２記載の構成によれば、請求項１の
作用に加え、端子部の端子及び電線導体のどちらの温度
でも検出することができる。According to the structure of claim 2, in addition to the operation of claim 1, it is possible to detect the temperature of either the terminal of the terminal portion or the electric wire conductor.
【００１０】[0010]
【実施例】以下、本発明の一実施例を図１乃至図３に基
づいて説明する。なお、この実施例では、端子カバーを
漏電遮断器（電気機器) に組み込んだものであり、以下
これに基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, the terminal cover is incorporated in the earth leakage breaker (electrical device), and the description will be made based on this.
【００１１】1 は漏電遮断器であり、ボディ2 とカバー
3 により側面視が略凸状のハウジングが形成されてい
る。このハウジングの両側には、電路及び負荷 (図示せ
ず) に接続される入出力端子4,5 を有した端子部6 が設
けられている。また、このハウジングの中央には、この
種で公知のハンドル7 及び漏電表示釦8 及び漏電テスト
釦9 が配設されている。この漏電遮断器1 の内部は、図
１に示すように、ハンドル7 に連結されたリンク機構10
と、このリンク機構10に回動自在に保持される可動接触
子の可動接点及びこの可動接点に対向する固定接点から
なる接点11と、入出力端子4,5 間に短絡電流や過電流等
の異常電流が流れたときにトリップリンク12を介してリ
ンク機構10の平衡状態を崩して接点11を強制開極する異
常電流検出装置13と、が収納されている。なお、図にお
いて、14は零相変流器14a によって不平衡電流が検出さ
れたときに引外し装置14b(電磁石) を介して接点11を強
制開極する漏電検出素子 (漏電検出回路) である。Reference numeral 1 is an earth leakage breaker, which is a body 2 and a cover.
3 forms a housing having a substantially convex side view. On both sides of this housing, terminal portions 6 having input / output terminals 4, 5 connected to an electric line and a load (not shown) are provided. Further, in the center of the housing, a handle 7, a leakage display button 8 and a leakage test button 9 which are known in this type are arranged. As shown in FIG. 1, the inside of the earth leakage breaker 1 has a link mechanism 10 connected to a handle 7.
And a contact 11 composed of a movable contact of a movable contact rotatably held by the link mechanism 10 and a fixed contact facing the movable contact, and a short-circuit current or an overcurrent between the input / output terminals 4 and 5. An abnormal current detection device (13) for breaking the equilibrium state of the link mechanism (10) through the trip link (12) to forcibly open the contact (11) when an abnormal current flows is housed. In the figure, 14 is a leakage detection element (leakage detection circuit) that forcibly opens the contact 11 through the trip device 14b (electromagnet) when an unbalanced current is detected by the zero-phase current transformer 14a. .
【００１２】端子部6 は、図２に示すように、各端子4,
5 毎に外側隔離壁15,15 及び内側隔離壁16,16 にて隔離
されている。一方の内側隔離壁16には、後述する端子カ
バーを固定するための螺子孔17が設けられている。ま
た、外側隔離壁15,15 には、後述する端子カバーのスリ
ットに嵌合する嵌合部18が形成されている。この端子部
6 の入力端子4 に電路と接続するための電線導体19が、
出力端子5 に負荷を接続するための電線導体19がそれぞ
れ接続される。As shown in FIG. 2, the terminal portion 6 includes terminals 4,
Each of the 5 is separated by an outer isolation wall 15,15 and an inner isolation wall 16,16. A screw hole 17 for fixing a terminal cover, which will be described later, is provided in one of the inner isolation walls 16. In addition, a fitting portion 18 that fits into a slit of a terminal cover, which will be described later, is formed on the outer isolation walls 15, 15. This terminal part
The wire conductor 19 for connecting to the electric circuit is connected to the input terminal 4 of 6.
Wire conductors 19 for connecting a load are connected to the output terminals 5, respectively.
【００１３】20は端子カバーで、端子部6 の側面に配設
される端子カバー本体21と、この端子カバー本体21に連
設され端子部6 の上面に配設されるカバー部22とから大
略Ｌ字状に形成されている。端子カバー本体21は、漏電
遮断器1 の嵌合部18が嵌合するスリット23と、出力端子
5 に電線導体19を接続するための切欠部24とが形成され
ている。この切欠部24の上部には、出力端子5 の温度を
検出する温度検出素子25 (温度検出手段) がリード線26
を介して内部の温度判別回路27 (温度判別手段) に接続
されている。カバー部22は、挿通孔28が設けられ漏電遮
断器1 の螺子孔17に螺子29を螺合させて固定できるよう
になっている。また、この端子カバー20を漏電遮断器1
に接続した場合に出力端子5 に温度検出素子25が挿通で
きる挿通孔30が形成されている。Reference numeral 20 denotes a terminal cover, which is generally composed of a terminal cover main body 21 arranged on the side surface of the terminal portion 6 and a cover portion 22 continuously provided on the terminal cover main body 21 and arranged on the upper surface of the terminal portion 6. It is formed in an L shape. The terminal cover body 21 has a slit 23 into which the fitting portion 18 of the earth leakage breaker 1 fits, and an output terminal.
A cutout 24 for connecting the electric wire conductor 19 is formed in 5. A temperature detecting element 25 (temperature detecting means) for detecting the temperature of the output terminal 5 is provided on the lead wire 26 above the cutout 24.
It is connected to the internal temperature determination circuit 27 (temperature determination means) via. The cover 22 is provided with an insertion hole 28 so that the screw 29 can be screwed into the screw hole 17 of the earth leakage breaker 1 to be fixed. Also, use this terminal cover 20 for earth leakage breaker 1
An insertion hole 30 through which the temperature detecting element 25 can be inserted is formed in the output terminal 5 when connected to.
【００１４】温度検出素子25 (温度検出手段) は、円柱
状に形成され挿通孔30から端子部6の出力端子5 に接触
させて出力端子5 の温度を検出する。また、この温度検
出素子25は、端子部6 に着脱自在に配設されており、図
１の破線で示すように、電線導体19に巻き付けて電線導
体19の温度を検出するようにしてもよい。The temperature detecting element 25 (temperature detecting means) is formed in a cylindrical shape and contacts the output terminal 5 of the terminal portion 6 through the insertion hole 30 to detect the temperature of the output terminal 5. Further, the temperature detecting element 25 is detachably arranged in the terminal portion 6, and may be wound around the electric wire conductor 19 to detect the temperature of the electric wire conductor 19 as shown by a broken line in FIG. .
【００１５】温度判別回路27 (温度判別手段) は、電子
回路で構成され、図２及び図３に示すように、出力端子
5 の電源(200V)を引き込む入力側リード線31,31 と、温
度検出素子25によって検出された温度が電路電源と負荷
とを切り離す温度である場合にスイッチ27a を閉極して
零相変流器14a に不平衡電流を流す出力側リード線32と
を有している。The temperature discriminating circuit 27 (temperature discriminating means) is composed of an electronic circuit, and as shown in FIG. 2 and FIG.
When the input lead wires 31 and 31 that draw in the power supply (200 V) of 5 and the temperature detected by the temperature detection element 25 are the temperatures at which the circuit power supply and the load are separated, the switch 27a is closed and zero-phase current transformation is performed. It has an output side lead wire 32 for supplying an unbalanced current to the container 14a.
【００１６】次に、出力端子5 で電路電源と負荷とを切
り離すべき温度が検出された場合の電路電源と負荷との
切り離し動作を図３に基づいて説明する。Next, the operation of disconnecting the electric power source and the load when the temperature at which the electric power source and the load should be disconnected is detected at the output terminal 5 will be described with reference to FIG.
【００１７】すなわち、出力端子5 で電線導体19を溶融
するような温度が検出された場合、温度判別回路27のス
イッチ27a が閉極して一方の入力側リード線31が出力側
リード線32と導通状態となる。これにより零相変流器14
a に不平衡電流が流れて漏電検出回路14によって増幅さ
れた電流が引外し装置14b(電磁石) に流れ接点11を強制
開極するのである。このとき漏電状態と同様に漏電表示
釦8 が突出する。That is, when the temperature at which the wire conductor 19 is melted is detected at the output terminal 5, the switch 27a of the temperature discriminating circuit 27 is closed and one input side lead wire 31 becomes the output side lead wire 32. It becomes conductive. This allows the zero-phase current transformer 14
An unbalanced current flows through a and the current amplified by the leakage detection circuit 14 flows into the trip device 14b (electromagnet), forcing the contact 11 to open. At this time, the leakage display button 8 projects like the leakage state.
【００１８】なお、本実施例によれば、電気機器に漏電
遮断器を用いているが、配線用遮断器やリレー等に組み
込んで温度検出素子によって電線導体が焼損し得る異常
温度が検出されたときに接点を強制開極するものであれ
ばよい。また、本実施例によれば、端子カバーを出力端
子側のみに接続しているが、端子で異常温度が検出され
た場合に接点を強制開極するものであれば入力端子側の
み又は入力端子と出力端子との両方に接続したものでも
よい。According to the present embodiment, although the earth leakage breaker is used in the electric equipment, the temperature detecting element incorporated in the breaker for wiring, the relay or the like detected an abnormal temperature at which the electric wire conductor could be burnt out. Anything that can forcefully open the contacts may be used. Further, according to this embodiment, the terminal cover is connected only to the output terminal side, but if the contact is forcibly opened when an abnormal temperature is detected at the terminal, only the input terminal side or the input terminal side It may be connected to both the output terminal and the output terminal.
【００１９】[0019]
【発明の効果】請求項１記載の端子カバーによれば、温
度検出手段によって検出された温度を温度判別手段によ
って電路電源と負荷とを切り離す温度であるか判別し、
切り離す温度であれば接点を強制開極するので、部材を
取り替えることなく再使用できるものとなる。According to the terminal cover of the first aspect of the present invention, the temperature detected by the temperature detecting means is determined by the temperature determining means to determine whether it is a temperature at which the electric circuit power source and the load are disconnected.
The contact is forcibly opened at the temperature for disconnection, so that the member can be reused without replacement.
【００２０】請求項２記載の端子カバーによれば、端子
部の端子及び電線導体のどちらの温度でも検出すること
ができ、請求項１記載の効果に加え、使い勝手が向上す
るという効果を奏する。According to the terminal cover of the second aspect, it is possible to detect both the temperature of the terminal of the terminal portion and the temperature of the wire conductor, and in addition to the effect of the first aspect, the usability is improved.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】図１のものの分解斜視図である。FIG. 2 is an exploded perspective view of the one shown in FIG.
【図３】図１のものの回路図である。FIG. 3 is a circuit diagram of that of FIG.
1 漏電遮断器 (電気機器) 4 入力端子 5 出力端子 6 端子部 11 接点 20 端子カバー 25 温度検出素子 (温度検出手段) 27 温度判別回路 (温度判別手段) 1 Earth leakage breaker (electrical device) 4 Input terminal 5 Output terminal 6 Terminal part 11 Contact 20 Terminal cover 25 Temperature detection element (temperature detection means) 27 Temperature discrimination circuit (temperature discrimination means)
Claims (2)
を有した端子部と、入出力端子間に介挿された接点と、
を備えた電気機器の端子部を覆う端子カバーであって、
端子の温度を検出する温度検出手段と、この温度検出手
段によって検出された温度を判別して接点を強制開極す
る温度判別手段と、を備えた端子カバー。1. A terminal portion having an input / output terminal for connecting an electric circuit power source and a load, and a contact interposed between the input / output terminals.
A terminal cover for covering a terminal portion of an electric device including:
A terminal cover provided with temperature detecting means for detecting the temperature of the terminal and temperature determining means for forcibly opening the contact by determining the temperature detected by the temperature detecting means.
配設してなる請求項１記載の端子カバー。2. The terminal cover according to claim 1, wherein the temperature detecting means is detachably disposed on the terminal portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12273393A JP3343993B2 (en) | 1993-05-25 | 1993-05-25 | Terminal cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12273393A JP3343993B2 (en) | 1993-05-25 | 1993-05-25 | Terminal cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06333490A true JPH06333490A (en) | 1994-12-02 |
| JP3343993B2 JP3343993B2 (en) | 2002-11-11 |
Family
ID=14843247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12273393A Expired - Fee Related JP3343993B2 (en) | 1993-05-25 | 1993-05-25 | Terminal cover |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3343993B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012243666A (en) * | 2011-05-23 | 2012-12-10 | Kawamura Electric Inc | Contact failure detection circuit and circuit breaker |
| JP2014026726A (en) * | 2012-07-24 | 2014-02-06 | Nitto Kogyo Co Ltd | Adopter for current measurement |
| JP2019160722A (en) * | 2018-03-16 | 2019-09-19 | 日東工業株式会社 | Seismic device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102269380B1 (en) * | 2020-08-03 | 2021-06-25 | (주)메티스 | Thermometer for MC and temperature-monitoring system therewith |
-
1993
- 1993-05-25 JP JP12273393A patent/JP3343993B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012243666A (en) * | 2011-05-23 | 2012-12-10 | Kawamura Electric Inc | Contact failure detection circuit and circuit breaker |
| JP2014026726A (en) * | 2012-07-24 | 2014-02-06 | Nitto Kogyo Co Ltd | Adopter for current measurement |
| JP2019160722A (en) * | 2018-03-16 | 2019-09-19 | 日東工業株式会社 | Seismic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3343993B2 (en) | 2002-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7876181B2 (en) | Earth leakage circuit breaker | |
| US8159803B2 (en) | Heat actuated interrupter receptacle | |
| JPH10271700A (en) | Charger | |
| DE69507592T2 (en) | MINIATURIZED AUTOMATIC LOAD SWITCH WITH MULTIPURPOSE PIPE TERMINAL AND A BLADE FOR PROTECTION AGAINST INTERNAL ELECTRIC ARC | |
| JPH06333490A (en) | Terminal cover | |
| IE852967L (en) | Electric switch¹852968¹¹¹during breaking | |
| CN215118764U (en) | Distribution box overtemperature sensing switch device | |
| JPH113643A (en) | Thermal fuse | |
| JPH11329201A (en) | Circuit breaker | |
| CN111998970A (en) | Temperature measuring device for circuit breaker | |
| CN211530342U (en) | RCD and AFDD combined integrated wall socket | |
| CN219642694U (en) | Safety wall double-control switch | |
| JPH05114348A (en) | Circuit breaker | |
| CN216698247U (en) | Strong and weak electricity disconnect-type upper and lower structure circuit breaker | |
| JP4548753B2 (en) | Electric leakage / phase loss discriminator | |
| JPH081589Y2 (en) | Direct current heating device | |
| CN208208676U (en) | It is easily installed type breaker temperature acquisition device mounting structure | |
| JPH0236202Y2 (en) | ||
| KR200327364Y1 (en) | Electronic mold case circuit breaker with test terminal | |
| JPH1146436A (en) | Disconnector device with self-diagnosing function | |
| JP3343967B2 (en) | Earth leakage breaker | |
| JPH10261358A (en) | Earth leakage breaker | |
| JPH10117429A (en) | Non-tracking receptacle | |
| JP2020089199A (en) | Power receiving device, power feeding device, and wiring system | |
| CN114188193A (en) | Strong and weak electricity disconnect-type upper and lower structure circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020730 |
|
| LAPS | Cancellation because of no payment of annual fees |