JPS5846508Y2 - Thermal relay with phase loss protection - Google Patents
Thermal relay with phase loss protectionInfo
- Publication number
- JPS5846508Y2 JPS5846508Y2 JP1977146942U JP14694277U JPS5846508Y2 JP S5846508 Y2 JPS5846508 Y2 JP S5846508Y2 JP 1977146942 U JP1977146942 U JP 1977146942U JP 14694277 U JP14694277 U JP 14694277U JP S5846508 Y2 JPS5846508 Y2 JP S5846508Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive
- bimetal
- contact
- tip
- piece
- 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
Landscapes
- Thermally Actuated Switches (AREA)
- Breakers (AREA)
Description
【考案の詳細な説明】
従来の欠相保護付サーマルリレーは、第1図の如く、ケ
ースa内に固定した複数個の取付金具b1.b2.b3
に複数個のバイメタルC1,C2,C3の基端を固定し
て各バイメタルC1,C2,C3を互に平行に配列し、
上記各バイメタルC1,C2,C3のそれぞれに装着す
るヒーターd1.d2.d3のそれぞれの一端を前記ケ
ースaに固定した端子e1.e2゜C3に接続してヒー
ター(L、dz、daのそれぞれの他端をケースaに装
着した端子f1.f2.f3に接続し、各バイメタルC
1,C2,C3のそれぞれの自由端においてほぼ直交す
るようケースa内に一対の駆動杆g、g’をそれらの長
手方向に摺動自在に配設し、各バイメタルC1,C2,
C3の自由端の高膨張側側面に当接する当接片h1.h
2.h3を一方の駆動杆gの一側縁に一体に突設して各
バイメタルC1,C2,C3の自由端の低膨張側側面に
当接する当接片i1.ti2.i3を駆動杆g′の一側
縁に一体に突設し、駆動杆gの先端に基端を枢支する駆
動片jの中間部を駆動杆g′の枢支して駆動片jを駆動
杆g、g’にそれぞれほぼ直交し、駆動片jの先端の一
定以上の移動によってスイッチ動作するスイッチkを前
記ケースa内に配設してなる。[Detailed description of the invention] As shown in Fig. 1, a conventional thermal relay with phase loss protection includes a plurality of mounting brackets b1. b2. b3
The base ends of the plurality of bimetals C1, C2, and C3 are fixed to the base ends of the bimetals C1, C2, and C3, and the bimetals C1, C2, and C3 are arranged in parallel to each other,
Heater d1 attached to each of the above-mentioned bimetals C1, C2, and C3. d2. terminals e1.d3 each having one end fixed to the case a; e2゜ Connect to C3 and connect the other ends of the heaters (L, dz, and da to terminals f1, f2, and f3 attached to case a, and connect each bimetal C
A pair of drive rods g and g' are disposed in the case a so as to be slidable in the longitudinal direction so as to be substantially perpendicular to each other at the free ends of the bimetals C1, C2, and C3, respectively.
Contact piece h1. that contacts the high expansion side side surface of the free end of C3. h
2. Contact piece i1. ti2. i3 is integrally protruded from one side edge of the drive rod g', and the intermediate part of the drive piece j whose base end is pivotally supported on the tip of the drive rod g is pivoted by the drive rod g' to drive the drive piece j. A switch k is disposed in the case a, which is substantially orthogonal to the rods g and g', and which is operated by movement of the tip of the drive piece j over a certain amount.
しかして、ヒーターd1.d2.d3を三相配電線の各
相配線に直列に挿入接続し、各相配線にそれぞれ一定以
上の過電流が流れると、各バイメタルC1,C2゜C3
は一定以上撓み、駆動杆gの当接片h1.h2.h3は
各バイメタルC1,C2,C3のそれぞれの自由端の高
膨張側側面に当接して駆動杆g′の当接片i1.i2.
i3が各バイメタルC1,C2,C3のそれぞれの低膨
張側側面に当接した状態で、駆動杆g。However, the heater d1. d2. When d3 is inserted and connected in series to each phase wiring of a three-phase distribution line, and an overcurrent of a certain level or more flows through each phase wiring, each bimetal C1, C2 ° C3
is bent over a certain level, and the contact piece h1. of the drive rod g is bent. h2. h3 is in contact with the high expansion side side surface of each free end of each bimetal C1, C2, C3, and the contact piece i1. i2.
With i3 in contact with the low-expansion side surfaces of each bimetal C1, C2, and C3, drive rod g.
g′は各バイメタルC1,C2,C3の自由端の撓みに
よってともに移動され、駆動片jの先端が一定以上移動
してスイッチにはスイッチ動作される。g' are moved together by the bending of the free ends of each of the bimetals C1, C2, and C3, and the tip of the drive piece j moves beyond a certain amount, causing the switch to operate.
次に、三相配電線に欠相事故が生じると、欠相した相電
線に対応したバイメタルの自由端は全く撓まず、欠相し
ていない相電線に対応するバイメタルの自由端は撓む。Next, when an open-phase accident occurs in a three-phase distribution line, the free end of the bimetal corresponding to the phase wire with the open phase does not bend at all, and the free end of the bimetal corresponding to the phase wire without the open phase bends.
このとき、欠相した相定線に対応するバイメタルの自由
端の高膨張側側面に駆動杆gの当接片が当接して駆動杆
gは移動せず、欠相していない相定線に対応するバイメ
タルの撓みによって駆動杆g′のみが移動し、駆動片j
の基端は駆動杆gに枢支されて駆動片jの中間部は駆動
杆g′に枢支されているため、駆動片jの先端の移動量
は駆動杆g′の移動量より大きり、シがして、前記スイ
ッチには速かにスイッチ動作されるものである。At this time, the contact piece of the drive rod g comes into contact with the high-expansion side side surface of the free end of the bimetal corresponding to the phase-fixing line where the phase is missing, and the drive rod g does not move, and the phase-fixing line where the phase is not open is connected. Only the drive rod g' moves due to the deflection of the corresponding bimetal, and the drive piece j
The base end of is pivotally supported by the drive rod g, and the middle part of the drive piece j is pivotally supported by the drive rod g', so the amount of movement of the tip of the drive piece j is greater than the amount of movement of the drive rod g'. , the switch is operated quickly.
ところか゛、各バイメタルC1,C2,C3の自由端の
高膨張側側面に駆動杆gの当接片h1.h2.h3を当
接し、かつ、各バイメタルC1,C2,C3の自由端の
低膨張側側面に駆動杆g′の当接片i、、i2.i3を
当接するためには、各バイメタルC1,C2,C3のそ
れぞれの自由端間の間隔を所定値にしなければならず、
従来の欠相保護付サーマルリレーにあっては、取付金具
す、、b2.b3のケースaへの取付位置を調節するこ
とにより、或は、バイメタルC1゜C2,C3を塑性変
形することにより、各バイメタルC1,C2,C3のそ
れぞれの自由端間の間隔を所定値に調節していたので、
この調節作業が煩雑である欠点があった。However, the contact piece h1 of the drive rod g is attached to the high expansion side side surface of the free end of each bimetal C1, C2, C3. h2. h3, and the contact pieces i, i2 . In order to abut i3, the distance between the free ends of each bimetal C1, C2, C3 must be set to a predetermined value,
Conventional thermal relays with phase loss protection include mounting brackets, b2. By adjusting the attachment position of b3 to case a, or by plastically deforming bimetals C1, C2, and C3, the distance between the free ends of each bimetal C1, C2, and C3 is adjusted to a predetermined value. Because I was doing
There is a drawback that this adjustment work is complicated.
本案は上記のような従来の欠点を除去するものであって
、以下本案の実施例を図面について説明すると、1はケ
ース、2a、2b、2Cは複数個のバイメタルで、それ
らの基端はケース1内に固定する取付金具3a、3b、
3Cに固定されて互に平行に配列される。The present invention is intended to eliminate the above-mentioned drawbacks of the conventional technology, and an embodiment of the present invention will be described below with reference to the drawings. 1 is a case, 2a, 2b, and 2C are a plurality of bimetals, and their base ends are connected to the case. 1, mounting brackets 3a, 3b,
3C and are arranged parallel to each other.
4a、4b、4Cは各バイメタル2a、2b、2Cに装
着するヒーターで、それらの一端はケース1に装着する
端子5a、5b、5Cに接続されて、それらの他端はケ
ース1に装着する端子5a。4a, 4b, 4C are heaters attached to each bimetal 2a, 2b, 2C, one end of which is connected to terminals 5a, 5b, 5C attached to case 1, and the other end is connected to a terminal attached to case 1. 5a.
6b、6Cに接続される。Connected to 6b and 6C.
7a、7b、7Cは長さが互に同じである調節ネジで、
それらは各バイメタル2a、2b、2Cのそれぞれの自
由端のネジ孔に貫通螺挿される。7a, 7b, and 7C are adjustment screws with the same length,
They are screwed through screw holes at the free ends of each bimetal 2a, 2b, 2C.
8,8′は、一対の駆動杆で、それらは各バイメタル2
a、2b、2Cの自由端に直交して各バイメタルに対し
て直角方向に摺動するようケース1内に配設され、駆動
杆8の一側縁には各バイメタル2a、2b、2Cの自由
端の高膨張側側面に突出する調節ネジ7a、7b、7C
の基端に当接する当接片8 a 、8 b 、8 Cが
突設されて駆動杆8′の一側縁には各バイメタル2a、
2b、2Cの自由端の低膨張側側面に突出する調節ネジ
7a、7b。8, 8' are a pair of drive rods, which are connected to each bimetal 2
A, 2b, 2C is disposed in the case 1 so as to slide perpendicularly to the free end of each bimetal, and one side edge of the drive rod 8 has a free end of each bimetal 2a, 2b, 2C. Adjustment screws 7a, 7b, 7C protruding from the high expansion side of the end
Contact pieces 8 a , 8 b , 8 C that abut against the base ends of the bimetal rods 8 a , 8 b , and 8 C are protrudingly provided on one side edge of the drive rod 8 ′.
Adjustment screws 7a, 7b protrude from the low expansion side surfaces of the free ends of 2b, 2C.
7Cの先端に当接する当接片8’a 、8’b 、8’
Cが突設される。Contact pieces 8'a, 8'b, 8' that contact the tip of 7C
C is provided protrudingly.
9は駆動杆8,8′の先端部に直交するよう駆動片で、
その基端は駆動杆8の先端に枢支されてその中間部は駆
動材8′の先端に当接又は枢支される。9 is a drive piece that is perpendicular to the tips of the drive rods 8 and 8';
Its base end is pivoted to the tip of the drive rod 8, and its intermediate portion abuts or pivots to the tip of the drive member 8'.
しかして、ケース1内には駆動片9の先端の一定以上の
移動によってスイッチ動作されるスイッチ10が配設さ
れるものである。A switch 10 is disposed within the case 1 and is operated by movement of the tip of the drive piece 9 over a certain amount.
かように本案は、長さが互に同じである調節ネジ7a、
7b、7Cを各バイメタ/L/2 a 、2b 、2
cのそれぞれの自由端のネジ孔に貫通螺挿したがら、各
バイメタルの自由端間の間隔がバラツキを生じても各調
節ネジの基端のバイメタルの高膨張側側面からの突出量
を調節することに各調節ネジの基端間の間隔を所定値に
なるよう調節でき、しがして、駆動杆8の各当接片を各
調節ネジの基端にそれぞれ当接でき、かつ、各調節ネジ
の長さは同一であるので、各調節ネジの基端間の間隔を
所定値にすることによって各調節ネジの先端間の間隔を
同様に所定値に調節でき、しかして、駆動杆8′の各当
接片を各調節ネジの先端にそれぞれ当接でき、組立調節
の頗る容易な欠相保護付サーマルリレーを提供できる効
果がある。Thus, in the present invention, the adjustment screws 7a having the same length,
7b, 7C for each bimetal/L/2 a, 2b, 2
To adjust the amount of protrusion from the high expansion side side surface of the bimetal at the proximal end of each adjustment screw even if the spacing between the free ends of each bimetal varies when the through screw is inserted into the screw hole at the free end of c. The distance between the base ends of each adjustment screw can be adjusted to a predetermined value, and each contact piece of the drive rod 8 can be brought into contact with the base end of each adjustment screw, and the distance between each adjustment screw can be adjusted to a predetermined value. Since the lengths of the drive rod 8' are the same, by setting the distance between the base ends of each adjustment screw to a predetermined value, the distance between the tips of each adjustment screw can be similarly adjusted to a predetermined value. Each contact piece can be brought into contact with the tip of each adjustment screw, which has the effect of providing a thermal relay with open-phase protection that is easy to assemble and adjust.
第1図は従来の欠相保護付サーマルリレーを示すもので
、第1図イは内部側面図、第1図口は同上のX−X線に
おける断面図、第2図及び第3図は本案の実施例を示す
もので、第2図は内部側面図、第3図は同上のY−Y線
における断面図である。
1はケース、2a、2b、2Cはバイメタル、3a、3
b、3Cは取付金具、4 a 、4 b 、4 Cはヒ
ーター、7a、7b、7Cは調節ネジ、8,8′ハ駆動
杆、8a、8b。
8 C,8’a 、8’b 、8’Cは当接片、9は駆
動片、10はスイッチである。Fig. 1 shows a conventional thermal relay with open-phase protection, Fig. 1 A is an internal side view, Fig. 1 opening is a sectional view taken along the line X-X of the above, and Figs. FIG. 2 is an internal side view, and FIG. 3 is a sectional view taken along the line Y--Y in the same embodiment. 1 is the case, 2a, 2b, 2C are bimetal, 3a, 3
b, 3C are mounting brackets, 4a, 4b, 4C are heaters, 7a, 7b, 7C are adjustment screws, 8, 8' are drive rods, 8a, 8b. 8C, 8'a, 8'b, and 8'C are contact pieces, 9 is a drive piece, and 10 is a switch.
Claims (1)
数個のバイメタル2a、2b、2Cを、それらの基端を
ケース1内に固定した取付金具3a、3b、3Cに固着
して互に平行に配設し、互に長さが同じである調節ネジ
7a、7b、7Cを前記各バイメタルの自由端に貫通螺
挿し、一対の駆動杆8,8′を各バイメタルの自由端に
直交して各バイメタルに対して直角方向に摺動するよう
配設して各調節ネジの基端に当接する当接片ga、8b
、8Cを摺動杆8に設けて各調節ネジの先端に当接する
当接片8’a、8’b、s’cを駆動杆8′に形成し、
駆動杆8,8′の先端部に直交するよう配設する駆動片
9の基端を駆動杆8の先端に枢支して駆動片9の中間部
を駆動杆8′の先端に枢支又は当接し、駆動片9の先端
の一定以上の移動によってスイッチ動作するスイッチ1
0をケース1内に配設してなる欠相保護サーマルリレーA plurality of bimetals 2a, 2b, 2C heated by heaters 4a, 4b, 4C are fixed to mounting brackets 3a, 3b, 3C whose base ends are fixed in case 1, and are arranged parallel to each other. Adjustment screws 7a, 7b, and 7C having the same length are screwed through the free ends of each bimetal, and a pair of drive rods 8 and 8' are perpendicular to the free ends of each bimetal. Contact pieces ga and 8b are arranged to slide in a direction perpendicular to each bimetal and come into contact with the base end of each adjustment screw.
, 8C are provided on the sliding rod 8, and contact pieces 8'a, 8'b, and s'c are formed on the driving rod 8' to abut the tips of the respective adjustment screws,
The base end of a drive piece 9 disposed perpendicularly to the tips of the drive rods 8 and 8' is pivoted to the tip of the drive rod 8, and the intermediate part of the drive piece 9 is pivoted to the tip of the drive rod 8'. A switch 1 that comes into contact with the drive piece 9 and operates as a result of movement of the tip of the drive piece 9 beyond a certain level.
Phase loss protection thermal relay with 0 arranged in case 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977146942U JPS5846508Y2 (en) | 1977-10-31 | 1977-10-31 | Thermal relay with phase loss protection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977146942U JPS5846508Y2 (en) | 1977-10-31 | 1977-10-31 | Thermal relay with phase loss protection |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471667U JPS5471667U (en) | 1979-05-22 |
JPS5846508Y2 true JPS5846508Y2 (en) | 1983-10-22 |
Family
ID=29127931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1977146942U Expired JPS5846508Y2 (en) | 1977-10-31 | 1977-10-31 | Thermal relay with phase loss protection |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846508Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4026927Y1 (en) * | 1964-10-22 | 1965-09-20 |
-
1977
- 1977-10-31 JP JP1977146942U patent/JPS5846508Y2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4026927Y1 (en) * | 1964-10-22 | 1965-09-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS5471667U (en) | 1979-05-22 |
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