JPH0451745U

JPH0451745U -

Info

Publication number: JPH0451745U
Application number: JP9414190U
Authority: JP
Priority date: 1990-09-05
Filing date: 1990-09-05
Publication date: 1992-04-30

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す要部の斜視
図である。第２図〜第９図は従来の遮断器を示す
図であつて、第２図は投入バネが放勢したトリツ
プ状態を示す側面断面図、第３図はチヤージが完
了したオフ状態を示す側面断面図、第４図はオン
状態を示す側面断面図、第５図は第２図の要部の
みを示す説明図、第６図は第３図の要部のみを示
す説明図、第７図は第４図の要部のみを示す説明
図、第８図はカムシヤフトの側面図、第９図はメ
インシヤフトの側面図である。第１０図〜第１５
図は従来の釈放形電磁引外し装置を示す図であつ
て、第１０図は第２図を背面側からみたトリツプ
状態のリセツト後を示す側面図、第１１図は第４
図を背面側からみたオン状態を示す側面図、第１
２図は第１０図の要部を示す断面図、第１３図は
ラツチ引外し完了時を示す第１２図と同じ図、第
１４図はアクチユエータの突出状態を示す第１２
図と同じ図、第１５図は第１０図のひねりばねと
リセツトレバーとを示す斜視図である。図において、３は手動操作ハンドル、７はカム
、９はチヤージアーム、１３は投入バネ、１６，
１８はクローズラツチ、２０はクローズバー、２
１はメインシヤフト、２１ａはメインシヤフトの
アーム、２６は投入トグルリンク機構、３４はト
リツプラツチ、３５はトリツプバー、Ｘは釈放形
電磁引外し装置、４７は取付板、４８は電磁装置
、４８ａはプランジヤ、４９はフレーム、５０は
アクチユエータ、５２は引外しバネ、５３はラツ
チ、５５はラツチバネ、５６はリセツトバネ、５
７はリセツトレバー、５７Ａはひねりばね位置決
め用凹部、５８は支軸、５９はレバー復帰用バネ
、６０はアクチユエータリセツト用ひねりばね、
６０ａはひねりばねの一端、６０ｂはひねりばね
の他端、θは開き角度を示す。なお、各図中同一
符号は同一または相当部分を示す。 FIG. 1 is a perspective view of essential parts showing an embodiment of this invention. Figures 2 to 9 are views showing a conventional circuit breaker, in which Figure 2 is a side sectional view showing the trip state in which the closing spring is released, and Figure 3 is a side sectional view showing the off state in which charging is completed. 4 is a side sectional view showing the ON state, FIG. 5 is an explanatory diagram showing only the main parts of FIG. 2, FIG. 6 is an explanatory diagram showing only the main parts of FIG. 3, and FIG. 8 is a side view of the camshaft, and FIG. 9 is a side view of the main shaft. Figures 10 to 15
The figures show a conventional release type electromagnetic tripping device, in which Fig. 10 is a side view of Fig. 2 seen from the rear side after the trip state has been reset, and Fig. 11 is a side view of Fig. 2 after resetting the trip state.
Side view showing the on state when the figure is viewed from the back side, 1st
Fig. 2 is a sectional view showing the main part of Fig. 10, Fig. 13 is the same drawing as Fig. 12 showing when the latch has been fully removed, and Fig. 14 is the sectional view of Fig. 12 showing the protruding state of the actuator.
FIG. 15, the same figure as the figure, is a perspective view showing the torsion spring and reset lever of FIG. 10. In the figure, 3 is a manual operation handle, 7 is a cam, 9 is a charge arm, 13 is a closing spring, 16,
18 is a close latch, 20 is a close bar, 2
1 is a main shaft, 21a is an arm of the main shaft, 26 is a closing toggle link mechanism, 34 is a trip latch, 35 is a trip bar, X is a release type electromagnetic tripping device, 47 is a mounting plate, 48 is an electromagnetic device, 48a is a plunger, 49 is a frame, 50 is an actuator, 52 is a trip spring, 53 is a latch, 55 is a latch spring, 56 is a reset spring, 5
7 is a reset lever, 57A is a recess for positioning a twist spring, 58 is a support shaft, 59 is a lever return spring, 60 is a twist spring for actuator reset,
60a is one end of the torsion spring, 60b is the other end of the torsion spring, and θ is the opening angle. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] A charging cam rotationally driven by a motor or a manual operation handle, a charge arm that engages with the charging cam and is rotationally displaced, and is charged by the rotation of the charge arm. A closing spring, a closing bar that engages with the charging cam via a closing latch and is turned on manually or by a solenoid, a rotatable main shaft, and a contact opening/closing mechanism provided on the main shaft. a closing toggle link mechanism, and a trip bar connected to the closing toggle link mechanism via a trip latch or the like and tripped by a release type electromagnetic trip device. When the trigger is operated, the toggle link mechanism is bent by the operation of the trip latches, and the main shaft is rotated to turn the contact off, and further, the release type electromagnetic tripping device attaches the device to the circuit breaker body. a mounting plate for the release-type electromagnetic device, a release-type electromagnetic device fixed to the mounting plate, a frame attached to the release-type electromagnetic device, and an actuator attached to the frame to move between a standby position and an extended position; a trip spring biasing the actuator in the direction of the protruding position; a latch that engages the plunger; a latch spring that biases the latch into a position in which it engages the actuator; and a reset spring that is provided on the actuator and that resets the plunger by pushing it out of the release position when the actuator is extended. , a reset lever rotatably attached to the mounting plate by a support shaft and constantly pressed against the arm of the main shaft by a lever return spring; and a reset lever attached to the support shaft and having one end engaged with the reset lever. an actuator reset torsion spring whose end engages with the actuator; when the plunger is released, the latch rotates against the latch spring and is disengaged from the actuator, and the actuator is released from the trip spring; At the same time, when the actuator protrudes and rotates the trip bar, the plunger is pushed in and reset by the reset spring that moves together with the actuator, and the rotation of the main shaft at the time of the trip causes the reset lever to return to the lever position. The actuator is rotated against a spring so that the reset lever rotates the torsion spring to reset the actuator, wherein the other end of the actuator reset torsion spring is engaged with the reset lever. A circuit breaker characterized in that the opening angle between both ends of the torsion spring is made constant.