A circuit breaker operating mechanism

Abstract

The utility model discloses a circuit breaker operating mechanism, including casing, static contact, drive assembly, movable contact subassembly, sliding block, swing bar and spring no.

Description

Technical Field

[0001] This utility model belongs to the field of low-voltage electrical equipment technology, specifically relating to a circuit breaker operating mechanism. Background Technology

[0002] With the rapid development of smart grids, 5G communication base stations, smart homes, and the Internet of Things, low-voltage power distribution systems are placing higher demands on the remote controllability, rapid response capabilities, and status monitoring of circuit breakers. Traditional manual operation methods for opening and closing circuit breakers can no longer meet the needs of real-time and precise control of circuit breakers in intelligent scenarios (such as remote dispatching, energy management, and rapid fault isolation). Currently, some electrically operated circuit breakers on the market use motor-gear transmission mechanisms, which are complex in structure, large in size, high in cost, lack reliability, and have slow response speeds, making it difficult to meet the requirements for rapid opening and closing. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a circuit breaker operating mechanism that is compact, low-cost, highly reliable, and has a fast response speed.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A circuit breaker operating mechanism includes a housing, within which a stationary contact and a drive assembly are installed. The drive assembly has a push rod on its right side that can extend and retract. It also includes a moving contact assembly, a slider, a rocker arm, and a spring. The moving contact assembly is rotatably mounted on the housing at its center, with its left end in separate contact with the stationary contact and its right end having an oblong hole. The slider is installed between the drive assembly and the moving contact assembly and can slide linearly back and forth between them. A pin is fixed to the slider and slidably fitted within the oblong hole. The left end of the rocker arm is rotatably fitted onto the pin, and its right end contacts the push rod. The left end of the spring is mounted on the housing, and its right end is connected to the right end of the moving contact assembly. When the circuit is open or closed, the push rod and the rocker arm are on the same straight line. During short circuits and overloads, the rocker arm rotates under external force, and its right end disengages from the push rod.

[0006] Furthermore, the circuit breaker operating mechanism also includes a second spring; the two ends of the second spring are respectively connected to the right end of the rocker arm and the lower end of the slider, for resetting the rocker arm after tripping.

[0007] Furthermore, a limiting rib is provided on the slider, the limiting rib being located on the lower side of the right end of the swing arm, and the swing arm is pressed tightly against the limiting rib under the action of the second spring.

[0008] Furthermore, the circuit breaker operating mechanism also includes a handle and a pull rod; one end of the handle is rotatably installed inside the housing, and the other end extends out of the housing; the pull rod is rotatably fitted into a pre-set hole on the lower outer side of the handle and a pre-set hole on the upper end of the slider; when the push rod is in the retracted state, the handle can be rotated to manually open the circuit breaker.

[0009] Furthermore, a long groove is provided on the housing along the sliding direction of the slider. Correspondingly, a raised rib is provided on the back of the slider to cooperate with the long groove and move back and forth in a straight line along the long groove. At the same time, the above-mentioned arrangement realizes the linear movement of the slider.

[0010] Furthermore, the moving contact assembly includes a mounting shaft, a rotating arm, a moving contact, and a torsion spring; the mounting shaft is vertically mounted on the housing; the lower end of the rotating arm is rotatably sleeved on the mounting shaft, and the upper end contacts the right end of the spring; the oblong hole is located in the middle of the rotating arm along its length; the right end of the moving contact is rotatably sleeved on the mounting shaft, and the left end of the moving contact is in separate contact with the stationary contact; the torsion spring is sleeved on the mounting shaft, with one torsion arm of the torsion spring engaged above the moving contact and the other torsion arm engaged on the left side of the rotating arm.

[0011] Furthermore, the lower end of the rotating arm is provided with a through hole laterally; the right end of the moving contact is located in the through hole and rotates back and forth in the through hole around the mounting shaft. When the rotating arm rotates counterclockwise, it presses the torsion arm, and the torsion arm then pushes the moving contact to rotate counterclockwise. After the moving contact contacts the stationary contact, the rotating arm continues to rotate counterclockwise and presses the torsion arm. The elastic force of the torsion spring presses the moving contact, ensuring reliable contact between the moving contact and the stationary contact, with final pressure.

[0012] Furthermore, a limiting rod 1 is vertically provided on the housing above the moving contact to limit the excessive upward movement of the moving contact, and a limiting rod 2 is vertically provided on the housing to the right of the rotating arm to limit the excessive rightward swing of the rotating arm.

[0013] Furthermore, the driving component is a linear push-pull device such as a push-pull electromagnet or an electric push rod.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) Extremely fast response: Through the direct linkage between the slider and the rocker arm and the waist-shaped hole, the linear motion of the drive component is efficiently converted into the opening and closing action of the moving contact, and the spring trips instantly to achieve a fast opening response;

[0016] (2) Compact structure: The pull rod and handle work together to reuse the motion path of the automatic drive slider. Combined with the linear guide design of long groove and convex rib, the number of parts is greatly reduced, which can effectively adapt to the space constraints of miniature circuit breakers.

[0017] (3) High reliability: Spring 2 forces the swing arm to return to the limit rib, ensuring the precise matching of the top rod and the swing arm; the torsion spring independently provides the final pressure of the contact, ensuring contact stability; Limit rod 1 and Limit rod 2 can prevent mechanical overshoot and improve service life. Attached Figure Description

[0018] The structure of this utility model will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a top view of the circuit breaker operating mechanism in the open state according to this utility model.

[0020] Figure 2 This is a perspective view of the circuit breaker operating mechanism in the open state according to this utility model.

[0021] Figure 3 This is a top view of the circuit breaker operating mechanism in the closed state according to this utility model.

[0022] Figure 4 This is an elevation view of the circuit breaker operating mechanism of the present invention in the closed state.

[0023] Figure 5 This is a top view of the circuit breaker operating mechanism in the tripped state according to this utility model.

[0024] Figure 6 This is an elevation view of the circuit breaker operating mechanism in the tripped state according to the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the drive component described in this utility model.

[0026] Figure 8 This is a schematic diagram of the moving contact assembly described in this utility model.

[0027] Figure 9 This is a schematic diagram of the slider described in this utility model.

[0028] Figure 10 This is a schematic diagram of the structure of the housing described in this utility model.

[0029] The figure shows: 1-Housing, 101-Long slot, 2-Spring 1, 3-Rotating arm, 4-Swing rod, 5-Slider, 6-Pull rod, 7-Handle, 8-Drive assembly, 9-Spring 2, 10-Static contact, 11-Moving contact, 12-Torsion spring, 13-Moving contact assembly, 131-Oval hole, 132-Through hole, 14-Pin, 15-Mounting shaft, 16-Limit rod 1, 17-Limit rod 2, 18-Mounting plate. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be noted that the terms "comprising," "including," or any other variations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Example 1

[0033] like Figure 1-10 As shown, this embodiment provides a circuit breaker operating mechanism, including a housing 1, a stationary contact 10, a drive assembly 8, a moving contact assembly 13, a slider 5, a rocker arm 4, a first spring 2, and a second spring 9.

[0034] The housing 1 is the outer shell of the circuit breaker, used to provide mechanical support and installation reference, integrate all moving parts, ensure the overall rigidity of the mechanism, and isolate external interference.

[0035] The stationary contact 10 is installed on the lower left side of the inner wall of the housing 1. It is a fixed conductive contact. After it comes into contact with the moving contact 11 and closes, it forms a current path, carries the rated current, and has high conductivity and arc resistance.

[0036] The drive assembly 8 is installed on the right side of the inner wall of the housing 1. The right side of the drive assembly 8 has a push rod 81 that can push out and retract into its interior. The drive assembly 8 is a linear push-pull device such as a push-pull electromagnet or an electric push rod. Preferably, it is a push-pull electromagnet. The push-pull electromagnet mainly consists of an outer cylinder, a coil disposed inside the outer cylinder, a moving iron core slidably disposed inside the coil, a push rod 81 located on the left side of the outer cylinder and integrally fixed with the moving iron core, and stationary iron cores disposed inside the outer cylinder and located on both sides of the moving iron core. The moving iron core is an electromagnet that can generate magnetism when the coil is energized, lose magnetism when the coil is de-energized, and change the direction of the magnetic poles when the direction of the coil current changes. The stationary iron cores are permanent magnets, and the magnetic poles of the two stationary iron cores facing the moving iron core are the same (both are N poles or both are S poles). When the coil is energized, the moving iron core... When the magnetic pole on the left side of the moving iron core is opposite to the magnetic pole on the left side of the stationary iron core (correspondingly, the magnetic pole on the right side of the moving iron core is the same as the magnetic pole on the left side of the stationary iron core), according to the principle that like poles repel and unlike poles attract, the moving iron core drives the push rod 81 to move to the left; conversely, the moving iron core drives the push rod 81 to move to the right. When the coil is de-energized, since the stationary iron core is a permanent magnet (the moving iron core loses its magnetism but will be attracted by the stationary iron core), it can maintain the state of attraction with the moving iron core, thereby maintaining the closed or open circuit, and thus realizing the bistable switching of the push rod 81 extending / retracting. Zero power consumption can be maintained after closing and opening.

[0037] The moving contact assembly 13 is V-shaped, with its middle part rotatably mounted on the housing 1. Its left end is in separate contact with the stationary contact 10, while its right end is provided with an oblong hole 131. Specifically, the moving contact assembly 13 includes a mounting shaft 15, a rotating arm 3, a moving contact 11, and a torsion spring 12.

[0038] The mounting shaft 15 is vertically mounted on the housing 1.

[0039] The lower end of the rotating arm 3 is rotatably sleeved on the mounting shaft 15 for transmitting driving force. The upper end of the rotating arm 3 contacts the right end of the spring 2 (for compressing the spring 2 or rotating clockwise under the push of the spring 2). The waist-shaped hole 131 is set in the middle of the rotating arm 3 along the length direction for compensating the movement trajectory of the slider 5. A through hole 132 is provided laterally at the lower end of the rotating arm 3.

[0040] The right end of the moving contact 11 is located in the through hole 132 at the lower end of the rotating arm 3 and is rotatably sleeved on the mounting shaft 15 for switching the main circuit. The moving contact 11 can rotate back and forth around the mounting shaft 15 in the through hole 132. The left end of the moving contact 11 is in separate contact with the stationary contact 10. The moving contact 11 is made of a metal conductive material.

[0041] The torsion spring 12 is sleeved on the mounting shaft 15 and has two torsion arms. One of the torsion arms of the torsion spring 12 is locked on a pre-set rod on the upper side of the moving contact 11, and the other torsion arm is locked on a pre-set rod on the left side of the rotating arm 3.

[0042] The slider 5 is mounted on the housing 1 between the drive assembly 8 and the moving contact assembly 13 and can slide linearly back and forth between the two. The left side of the slider 5 extends toward the oblong hole 131 of the rotating arm 3, and a pin 14 that mates with the oblong hole 131 is fixed on its extension. The pin 14 is slidably fitted inside the oblong hole 131. The slider 5 converts linear thrust into rotational motion, simplifying the transmission chain.

[0043] The swing arm 4 is positioned between the rotating arm 3 and the top rod 81, serving as a force transmission and tripping intermediary. The left end of the swing arm 4 is rotatably sleeved on the pin 14 (the pin 14 is a motion coupling component that passes through the slider 5, the waist-shaped hole 131, and the swing arm 4, realizing the linkage of the three components; the waist-shaped hole 131 provides tolerance compensation space to prevent jamming). The right end of the swing arm 4 is in contact with the top rod 81. When the circuit is open or closed, the top rod 81 and the swing arm 4 are on the same straight line. When there is a short circuit or overload, the swing arm 4 rotates under the push of an external force (this external force is used to separate the top rod 81 and the swing arm 4, so that the force of the top rod 81 no longer acts on the swing arm 4; this external force is a trip unit, such as a bimetallic strip trip unit, which uses the bending deformation force of the bimetallic strip to push the swing arm 4 to rotate counterclockwise during short circuits and overloads). The right end of the swing arm 4 is disengaged from the top rod 81.

[0044] The left end of the spring 2 is installed on the right side of the pre-set mounting plate 18 on the housing 1, and the right end is connected to the right end of the moving contact assembly 13. As an energy storage tripping spring, it provides the mechanical tripping power source. When the circuit is closed, it is compressed by the rotating arm 3. When the circuit is tripped / opened, it releases energy to drive the rotating arm 3 to rotate clockwise.

[0045] The two ends of the spring 9 are respectively connected to the preset rod body at the right end of the swing rod 4 and the preset rod body at the lower end of the slider 5, and are used to reset the swing rod 4 after disengagement.

[0046] Working principle:

[0047] like Figure 1 and Figure 2As shown, the circuit breaker is in the open state at this time. When the circuit breaker needs to be closed, the control circuit sends a closing control signal to the drive assembly 8. The drive assembly 8 is energized to generate electromagnetic force (causing the magnetic poles at the left end of the moving iron core to be opposite to the magnetic poles at the right end of the left stationary iron core and attracting each other, while the magnetic poles at the right end of the moving iron core and the magnetic poles at the left end of the right stationary iron core are the same and repelling each other), causing the push rod 81 to extend, pressing against the swing rod 4 and pushing the rotating arm 3 to rotate (simultaneously stretching the second spring 9, which stores energy). The rotating arm 3 drives the moving contact 11 to move (simultaneously compressing the first spring 2, which stores energy), causing the moving contact 11 to contact the stationary contact 10 (simultaneously compressing the torsion spring 12, whose elasticity maintains reliable contact between the moving and stationary contacts, with final pressure), completing the closing operation. After closing, the state of the circuit breaker is as follows. Figure 2 and Figure 3 As shown. At this time, the holding function of drive assembly 8 is activated (the moving iron core and the left stationary iron core remain engaged), and even if the closing control signal disappears, drive assembly 8 still maintains the extended push rod state to keep the circuit breaker closed.

[0048] like Figure 2 and Figure 3 As shown, the circuit breaker is currently in the closed state. When the circuit breaker needs to open, the control circuit sends a opening control signal to the drive assembly 8. The drive assembly 8 reverses its action (making the magnetic pole at the left end of the moving iron core the same as the magnetic pole at the right end of the left stationary iron core and repel each other, while the magnetic pole at the right end of the moving iron core and the magnetic pole at the left end of the right stationary iron core are opposite and attract each other). The push rod 81 retracts, the force applied to the swing rod 4 disappears, the spring 29 releases its energy, and the swing rod 4 resets under the action of the spring 29. At the same time, the spring 12 releases its energy, pushing the rotating arm 3 to rotate clockwise. The rotating arm 3 rotates in the opposite direction under the elastic force of the spring 12, causing the moving contact 11 to rotate clockwise synchronously, separating the moving contact 11 from the stationary contact 10, completing the opening operation. After opening, the state of the circuit breaker is as follows. Figure 1 and Figure 2 As shown. The drive assembly 8 keeps the push rod retracted (the moving iron core and the right stationary iron core remain engaged), maintaining the circuit breaker tripped.

[0049] like Figure 2 and Figure 3 As shown, the circuit breaker is in the closed state at this time. When a short circuit or overload occurs, an external force (such as a trip unit) pushes the rocker arm 4 to rotate counterclockwise. The rocker arm 4 and the push rod 81 of the drive assembly 8 disengage, and the rotating shaft 3 is in a rotatable state. The spring 2 releases energy and pushes the rotating arm 3 to rotate clockwise. Under the action of the spring 2, the rotating shaft 3 drives the moving contact 11 to rotate clockwise and disengage from the stationary contact 10, realizing the tripping and opening. When the circuit breaker is tripped and opened, the state of the circuit breaker is as follows. Figure 4 and Figure 5 As shown.

[0050] In practical use, the control circuit can be programmed and adjusted according to different application scenarios and control requirements to achieve precise control of the circuit breaker's opening and closing. Example 2

[0051] To ensure that the top rod 81 and the swing rod 4 make precise contact when the circuit is opened or closed, so as to ensure that the swing rod 4 is stably stressed.

[0052] This embodiment adds the following structure based on embodiment 1 or 2.

[0053] like Figure 9 As shown, a limiting rib 51 is provided on the slider 5. The limiting rib 51 is located on the lower side of the right end of the swing rod 4. The swing rod 4 is pressed against the limiting rib 51 under the action of the second spring 9. When the trip or open circuit is triggered and the top rod 81 retracts, the second spring 9 pulls the swing rod 4 and the limiting rib 51 to ensure that the swing rod 4 and the top rod 81 are on the same straight line for subsequent closing. Example 3

[0054] To achieve manual opening and closing control, this embodiment adds the following structure based on embodiment 1 or 2.

[0055] like Figure 1 As shown, the circuit breaker operating mechanism also includes a handle 7 and a pull rod 6. One end of the handle 7 is rotatably mounted inside the housing 1, and the other end extends outside the housing 1. The pull rod 6 is rotatably fitted into a pre-set hole on the lower outer side of the handle 7 and a pre-set hole on the upper end of the slider 5, respectively. When the push rod 81 is in the retracted state, the handle 7 can be rotated for manual tripping operation.

[0056] Working principle:

[0057] As shown in the figure, when manually opening the circuit breaker, the handle 7 is turned clockwise. The handle 7 pulls the slider 5 to the right through the pull rod and pulls the swing rod 4 to the right through the pin 14. At the same time, the rotating arm 3 rotates clockwise, causing the moving contact 11 to rotate clockwise and separate from the stationary contact 10, thus opening the circuit breaker. While the swing rod 4 moves to the right, it pushes the top rod 81 to retract (so that the moving iron core is separated from the left stationary iron core until it moves to the right stationary iron core and is attracted to it, and remains in the attracted state), maintaining the open state.

[0058] During the automatic tripping, automatic closing, and automatic tripping processes, the handle 7 will rotate to the designated position in sync with the movement of the slider 5 and the pull rod 6. Example 4

[0059] To achieve stable sliding of slider 5, this embodiment adds the following structure based on any one of embodiments 1-3.

[0060] like Figure 9 and Figure 10As shown, a long groove 101 is provided on the housing 1 along the moving direction of the slider 5. Correspondingly, a rib 52 is provided on the back of the slider 5 to match the long groove 101 and to move back and forth in a straight line along the long groove 101. Example 5

[0061] To prevent mechanical overshoot and improve service life, this embodiment adds the following structure based on any one of embodiments 1-4.

[0062] like Figure 10 As shown, a limiting rod 16 is provided on the housing 1 above the moving contact 11 to limit the moving contact 11 from moving upwards excessively, and a limiting rod 17 is provided on the housing 1 to the right of the rotating arm 3 to limit the rotating arm 3 from swinging to the right excessively.

[0063] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0064] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A circuit breaker operating mechanism, comprising a housing (1), wherein a stationary contact (10) and a drive assembly (8) are installed within the housing (1); a push rod (81) capable of being pushed out and retracted into the drive assembly (8) is provided on the right side of the drive assembly (8); characterized in that: It also includes a moving contact assembly (13), a slider (5), a rocker arm (4), and a spring (2); the middle part of the moving contact assembly (13) is rotatably mounted on the housing (1), its left end is in separate contact with the stationary contact (10), and its right end is provided with a waist-shaped hole (131); the slider (5) is mounted between the drive assembly (8) and the moving contact assembly (13) and can slide back and forth linearly between the two, and a pin (14) is fixed on the slider (5), and the pin (14) is slidably sleeved in the waist-shaped hole (131); the left end of the rocker arm (4) is rotatably sleeved on the pin (14), and the right end is in contact with the top rod (81); the left end of the spring (2) is mounted on the housing (1), and the right end is connected to the right end of the moving contact assembly (13).

2. The circuit breaker operating mechanism according to claim 1, characterized in that: When the circuit is opened or closed, the push rod (81) and the swing rod (4) are on the same straight line; when there is a short circuit or overload, the swing rod (4) rotates under the push of external force, and the right end of the swing rod (4) is disengaged from the push rod (81).

3. The circuit breaker operating mechanism according to claim 1, characterized in that: It also includes a second spring (9); the two ends of the second spring (9) are respectively connected to the right end of the rocker arm (4) and the lower end of the slider (5).

4. The circuit breaker operating mechanism according to claim 3, characterized in that: A limiting rib (51) is provided on the slider (5). The limiting rib (51) is located on the lower side of the right end of the swing rod (4). The swing rod (4) is pressed against the limiting rib (51) under the action of the second spring (9).

5. The circuit breaker operating mechanism according to claim 1, characterized in that: It also includes a handle (7) and a pull rod (6); one end of the handle (7) is rotatably installed inside the housing (1), and the other end extends out of the housing (1); the pull rod (6) is rotatably sleeved in the pre-set hole on the lower outer side of the handle (7) and the pre-set hole on the upper end of the slider (5); when the top rod (81) is in the retracted state, the handle (7) can be rotated to manually open the circuit breaker.

6. The circuit breaker operating mechanism according to claim 1, characterized in that: A long groove (101) is provided on the housing (1) along the moving direction of the slider (5). Correspondingly, a rib (52) is provided on the back of the slider (5) to cooperate with the long groove (101) and to move back and forth in a straight line along the long groove (101).

7. The circuit breaker operating mechanism according to claim 1, characterized in that: The moving contact assembly (13) includes a mounting shaft (15), a rotating arm (3), a moving contact (11), and a torsion spring (12); the mounting shaft (15) is vertically mounted on the housing (1); the lower end of the rotating arm (3) is rotatably sleeved on the mounting shaft (15), and the upper end is in contact with the right end of the spring (2); the waist-shaped hole (131) is arranged in the middle of the rotating arm (3) along the length direction of the rotating arm (3); the right end of the moving contact (11) is rotatably sleeved on the mounting shaft, and the left end of the moving contact (11) is in separate contact with the stationary contact (10); the torsion spring (12) is sleeved on the mounting shaft, one torsion arm of the torsion spring (12) is locked on the upper side of the moving contact (11), and the other torsion arm is locked on the left side of the rotating arm (3).

8. The circuit breaker operating mechanism according to claim 7, characterized in that: The lower end of the rotating arm (3) is provided with a through hole; the right end of the moving contact (11) is located in the through hole and rotates back and forth in the through hole around the mounting shaft.

9. The circuit breaker operating mechanism according to claim 1, characterized in that: A limiting rod (16) is provided on the housing (1) above the moving contact (11) to limit the moving contact (11) from moving upwards excessively, and a limiting rod (17) is provided on the housing (1) to the right of the rotating arm (3) to limit the rotating arm (3) from swinging to the right excessively.

10. The circuit breaker operating mechanism according to claim 1, characterized in that: The drive component (8) is a push-pull electromagnet or an electric push rod.

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