circuit breaker

Abstract

The utility model belongs to low voltage electrical apparatus technical field, specifically disclose a circuit breaker. The utility model provides a circuit breaker, sets up the drive shaft on the hasp subassembly, the drive shaft is arranged in the first sliding slot of alarm transmission mechanism in the sliding, first rotation axis is worn second sliding slot, when the hasp subassembly is tripped, the drive shaft is arranged in the first sliding slot and drives alarm transmission mechanism to move, makes alarm transmission mechanism trigger alarm micro -switch, has realized the signal of alarm micro -switch's on, the simple structure of the intermediate transmission spare that sets up between the hasp subassembly and alarm transmission mechanism, few parts, improved alarm transmission mechanism trigger alarm micro -switch's stability, realized the automatic control and protection of circuit, improved the use reliability of circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a circuit breaker. Background Technology

[0002] With the continuous development of photovoltaic technology, the performance requirements of its power distribution system for molded case circuit breakers are gradually increasing, prompting molded case circuit breaker products to continuously develop towards smaller size and higher performance.

[0003] Auxiliary contacts and alarm contacts are important accessories in existing molded case circuit breakers (MCCBs). When an MCCB malfunctions, such as due to overcurrent, overload, or short circuit, the alarm contacts and auxiliary contacts can indicate the fault status or the on / off status of the circuit breaker. In existing technology, the alarm contact is triggered by a rotating shaft system with a moving contact. When the MCCB trips freely, the mechanism for triggering the alarm contact has many components, resulting in poor operational stability. Utility Model Content

[0004] The purpose of this utility model is to provide a circuit breaker with fewer parts, which solves the problem that the mechanism for triggering the alarm micro switch has many parts and poor stability when the circuit breaker trips.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A circuit breaker includes an operating mechanism, an alarm transmission mechanism, and an alarm micro switch. The operating mechanism includes a bracket and a latch assembly. The bracket has a first rotating shaft, and the latch assembly is rotatably connected to the bracket. The latch assembly has a drive shaft. The alarm transmission mechanism has a first sliding groove and a second sliding groove at its two ends, respectively. The drive shaft is slidably disposed in the first sliding groove, and the first rotating shaft passes through the second sliding groove. When the latch assembly is disengaged, the drive shaft slides in the first sliding groove and drives the alarm transmission mechanism to move, thereby triggering the alarm micro switch.

[0007] As an optional technical solution for the aforementioned circuit breaker, the latch assembly includes a trip latch and a locking latch connected by a latch. The trip latch and the locking latch are rotatably mounted on the bracket. The drive shaft is mounted on the trip latch. When the trip latch disengages from the locking latch, the drive shaft slides in the first groove and drives the alarm transmission mechanism to move.

[0008] As an optional technical solution for the aforementioned circuit breaker, when the latch assembly is re-fastened, the drive shaft slides within the first groove without applying force to the alarm transmission mechanism, and the alarm transmission mechanism moves to reset without triggering the alarm micro switch.

[0009] As an optional technical solution for the aforementioned circuit breaker, the alarm transmission mechanism includes an alarm top rod, an alarm contact sliding push rod, and an alarm elastic reset component. One end of the alarm elastic reset component is fixed, and the other end of the alarm elastic reset component is connected to one end of the alarm contact sliding push rod. The alarm top rod has a first sliding groove and a second sliding groove at both ends. The alarm top rod can apply force to the other end of the alarm contact sliding push rod to drive the alarm contact sliding push rod to move, causing the alarm contact sliding push rod to trigger the alarm micro switch. When the alarm top rod does not apply force to the other end of the alarm contact sliding push rod, the alarm elastic reset component is used to reset the alarm contact sliding push rod.

[0010] As an optional technical solution for the aforementioned circuit breaker, the alarm rod includes an alarm rod body, with a first sliding groove and a second sliding groove at both ends of the alarm rod body. A push plate is provided on one side of the alarm rod body, and the push plate is set at an angle to the alarm rod body, and the push plate is set close to the second sliding groove. The push plate is in contact with the other end of the alarm contact sliding push rod.

[0011] As an optional technical solution for the aforementioned circuit breaker, the first slide groove is arc-shaped, the second slide groove is straight, and the second slide groove extends along the direction of movement of the alarm transmission mechanism. When the latch assembly is disengaged, the drive shaft abuts against the first end of the first slide groove, and the first rotating shaft abuts against the second end of the second slide groove. When the latch assembly is re-engaged, the drive shaft is positioned in the middle of the first slide groove, and the first rotating shaft abuts against the first end of the second slide groove, wherein the first end is positioned above the second end.

[0012] As an optional technical solution for the aforementioned circuit breaker, the operating mechanism further includes a linkage assembly and a rocker arm assembly. The linkage assembly is rotatably connected to the latch assembly, the rocker arm assembly is rotatably connected to the bracket, and the rocker arm assembly is connected to the linkage assembly.

[0013] The circuit breaker also includes:

[0014] Static contact head;

[0015] A rotating shaft mechanism is connected to the connecting rod assembly. The rotating shaft mechanism is connected to a moving contact. The rocker arm assembly drives the rotating shaft mechanism to move through the connecting rod assembly, so that the moving contact and the stationary contact are attracted or separated.

[0016] Auxiliary micro switch;

[0017] An auxiliary transmission mechanism is provided, one end of which is rotatably connected to the first rotating shaft. When the latch assembly is disengaged, the linkage assembly is used to drive the auxiliary transmission mechanism to activate, thereby triggering the auxiliary micro switch.

[0018] As an optional technical solution for the aforementioned circuit breaker, when the latch assembly is re-engaged, the linkage assembly does not apply force to the auxiliary transmission mechanism, and the auxiliary transmission mechanism resets and does not trigger the auxiliary micro switch.

[0019] As an optional technical solution for the aforementioned circuit breaker, the auxiliary transmission mechanism includes an auxiliary push rod, an auxiliary contact sliding push rod, and an auxiliary elastic reset member. One end of the auxiliary elastic reset member is fixed, and the other end of the auxiliary elastic reset member is connected to one end of the auxiliary contact sliding push rod. One end of the auxiliary push rod is rotatably connected to the first rotating shaft, and the other end of the auxiliary contact sliding push rod is in contact with the other end of the auxiliary push rod.

[0020] When the latch assembly disengages, the linkage assembly drives the auxiliary push rod to rotate counterclockwise around the first rotation axis, causing the auxiliary contact sliding push rod to move and trigger the auxiliary micro switch;

[0021] When the latch assembly is re-fastened, the linkage assembly does not apply force to the auxiliary push rod, and the auxiliary elastic reset member is used to drive the auxiliary contact sliding push rod to reset, so that the auxiliary push rod rotates clockwise around the first rotation axis, and the auxiliary contact sliding push rod does not trigger the auxiliary micro switch.

[0022] As an optional technical solution for the aforementioned circuit breaker, the auxiliary push rod includes a first rod portion and a second rod portion. One end of the first rod portion is rotatably connected to the first rotating shaft, and the other end of the first rod portion is connected to one end of the second rod portion. The second rod portion is set at an angle to the first rod portion. A push block is provided between the second rod portion and the first rod portion. The push block is used to contact the connecting rod assembly. The second rod portion contacts the other end of the auxiliary contact sliding push rod.

[0023] The beneficial effects of this utility model are:

[0024] This utility model provides a circuit breaker with a drive shaft mounted on the latch assembly. The drive shaft is slidably mounted in a first groove of the alarm transmission mechanism, and a first rotating shaft passes through a second groove. When the latch assembly disengages, the drive shaft slides in the first groove and drives the alarm transmission mechanism to move, thereby triggering the alarm micro switch and activating the alarm micro switch signal. The intermediate transmission component between the latch assembly and the alarm transmission mechanism has a simple structure and fewer parts, which improves the stability of the alarm transmission mechanism triggering the alarm micro switch, realizes automatic control and protection of the circuit, and improves the reliability of the circuit breaker. Attached Figure Description

[0025] Figure 1 This is a first schematic diagram of the circuit breaker in the open or tripped state according to an embodiment of the present utility model;

[0026] Figure 2 This is a second schematic diagram of the circuit breaker in the open or tripped state according to an embodiment of the present invention;

[0027] Figure 3 This is a third schematic diagram of the circuit breaker in the open or tripped state according to an embodiment of the present utility model.

[0028] Figure 4 This is a schematic diagram of the assembly structure of the alarm micro switch, the alarm elastic reset component, and the alarm contact sliding push rod provided in this embodiment of the utility model;

[0029] Figure 5 This is a first schematic diagram of the circuit breaker in the closed state according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the assembly structure of the linkage assembly, jump buckle, alarm top rod, and auxiliary top rod provided in this embodiment of the utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the alarm top rod provided in this embodiment of the utility model;

[0032] Figure 8 This is a second schematic diagram of the circuit breaker in the closed state according to an embodiment of the present invention;

[0033] Figure 9 This is a third schematic diagram of the circuit breaker in the closed state according to an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of the auxiliary push rod provided in an embodiment of this utility model.

[0035] In the picture:

[0036] 1. Operating mechanism; 2. Alarm transmission mechanism; 3. Alarm micro switch; 4. Stationary contact; 5. Rotating shaft mechanism; 6. Moving contact; 7. Auxiliary micro switch; 8. Auxiliary transmission mechanism; 9. Base shell;

[0037] 11. Bracket; 12. Hook and latch assembly; 121. Jumper buckle; 122. Lock; 123. Re-hook; 13. First rotating shaft; 14. Drive shaft; 15. Linkage assembly; 151. Crank; 152. First connecting rod; 153. Second connecting rod; 154. Lower connecting rod; 155. Pin; 156. Sliding shaft; 157. Slider; 158. Energy storage spring; 159. Handle; 1510. Slide rail; 16. Rocker arm assembly;

[0038] 21. First slide groove; 22. Second slide groove; 23. Alarm top rod; 231. Alarm top rod body; 232. Push plate; 24. Alarm contact sliding push rod; 25. Alarm elastic reset component; 26. Alarm housing;

[0039] 81. Auxiliary push rod; 811. First rod part; 812. Second rod part; 813. Push block; 814. Auxiliary insertion groove; 815. Auxiliary through hole; 82. Auxiliary contact sliding push rod; 83. Auxiliary elastic reset component; 84. Auxiliary housing. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] like Figures 1 to 4 As shown, this embodiment provides a circuit breaker, which includes an operating mechanism 1, an alarm transmission mechanism 2, and an alarm micro switch 3. The operating mechanism 1 includes a bracket 11 and a latch assembly 12. The bracket 11 is provided with a first rotating shaft 13. The latch assembly 12 is rotatably connected to the bracket 11 and is provided with a drive shaft 14. The alarm transmission mechanism 2 is provided with a first sliding groove 21 and a second sliding groove 22 at its two ends, respectively. The drive shaft 14 is slidably disposed in the first sliding groove 21, and the first rotating shaft 13 passes through the second sliding groove 22. When the latch assembly 12 is disengaged, the drive shaft 14 slides in the first sliding groove 21 and drives the alarm transmission mechanism 2 to move, thereby triggering the alarm micro switch 3.

[0045] A drive shaft 14 is provided on the latch assembly 12. The drive shaft 14 is slidably disposed in the first slide groove 21 of the alarm transmission mechanism 2. The first rotating shaft 13 passes through the second slide groove 22. When the latch assembly 12 is disengaged, the drive shaft 14 slides in the first slide groove 21 and drives the alarm transmission mechanism 2 to move, so that the alarm transmission mechanism 2 triggers the alarm micro switch 3, realizing the signal connection of the alarm micro switch 3. The intermediate transmission component between the latch assembly 12 and the alarm transmission mechanism 2 has a simple structure and few parts, which improves the stability of the alarm transmission mechanism 2 triggering the alarm micro switch 3, realizes the automatic control and protection of the circuit, and improves the reliability of the circuit breaker.

[0046] The circuit breaker also includes a stationary contact 4, a rotating shaft mechanism 5, and a moving contact 6. The operating mechanism 1 further includes a linkage assembly 15 and a rocker arm assembly 16. The linkage assembly 15 is rotatably connected to the latch assembly 12, and the rocker arm assembly 16 is rotatably connected to the bracket 11. The rocker arm assembly 16 is connected to the linkage assembly 15. The rocker arm assembly 16 drives the rotating shaft mechanism 5 through the linkage assembly 15, causing the moving contact 6 to engage or disengage with the stationary contact 4.

[0047] The circuit breaker also includes a base housing 9, and a rotating shaft mechanism 5 is rotatably mounted inside the base housing 9. Multiple moving contacts 6 are mounted on the rotating shaft mechanism 5, and stationary contacts 4 are mounted inside the base housing 9. The stationary contacts 4 and moving contacts 6 are arranged in a one-to-one correspondence. The structure of the rotating shaft mechanism 5 is existing technology and will not be described in detail here.

[0048] The connecting rod assembly 15 includes a crank 151, a first connecting rod 152, a second connecting rod 153, and a lower connecting rod 154. One end of the first connecting rod 152 is connected to the rocker arm assembly 16 via a pin 155. The crank 151 is connected to the pin 155. The other end of the first connecting rod 152 is connected to a sliding shaft 156. A slider 157 is mounted on the sliding shaft 156. A slide rail 1510 is mounted on the bracket 11. The slider 157 is slidably mounted on the slide rail 1510. When the circuit breaker trips or is tripped, the slider 157 can only slide along the slide rail 1510. One end of the second connecting rod 153 is fixedly connected to the sliding shaft 156. The other end of the second connecting rod 153 is hinged to one end of the lower connecting rod 154. The other end of the lower connecting rod 154 is hinged to the rotating shaft mechanism 5. The middle part of the lower connecting rod 154 is hinged to the bottom shell 9. An energy storage spring 158 is connected between the pin 155 and the rocker arm assembly 16.

[0049] A crank 151 is connected to a handle 159. Operating the handle 159 drives the operating mechanism 1 to perform opening and closing operations. The handle 159 rotates the rocker arm assembly 16, which in turn rotates the crank 151 and the first connecting rod 152 via a pin 155. The first connecting rod 152 causes the slider 157 to slide within the slide rail 1510, and simultaneously drives the second connecting rod 153 to rotate via a sliding shaft 156. The rotation of the second connecting rod 153 causes the lower connecting rod 154 to rotate, which in turn drives the rotating shaft mechanism 5 to rotate, thereby causing the moving contact 6 to engage or disengage with the stationary contact 4. When the circuit breaker is closed, the energy storage spring 158 stores energy. When the circuit breaker is opened, the energy storage spring 158 releases energy.

[0050] The latch assembly 12 includes a trip latch 121, a locking latch 122, and a re-latch 123. The trip latch 121 is rotatably connected to the crank 151, and the trip latch 121, locking latch 122, and re-latch 123 are rotatably connected to the bracket 11. The locking latch 122 overlaps with the trip latch 121, and the re-latch 123 is limited to the locking latch 122. The fault protection mechanism drives the re-latch 123 to rotate, thereby releasing the re-latch 123 from the locking latch 122, and then releasing the locking latch 122 from the trip latch 121, causing the operating mechanism 1 to disengage. The trip latch 121 can no longer restrict the position of the crank 151, and the energy storage spring 158 releases energy, driving the rotating shaft mechanism 5 to rotate through the connecting rod assembly 15. The rotating shaft mechanism 5 causes the moving contact 6 to separate from the stationary contact 4, realizing the tripping protection. When the latch 122 and the snap fastener 121 are fastened together, the snap fastener 121 can be limited so that the crank 151 can rotate with the snap fastener 121 as the center of rotation.

[0051] In some embodiments, the drive shaft 14 is disposed on the trip latch 121. When the trip latch 121 disengages from the latch 122, the drive shaft 14 slides within the first slide groove 21 and drives the alarm transmission mechanism 2 to move, thereby triggering the alarm micro switch 3. During the circuit breaker's opening and closing process, the drive shaft 14 on the trip latch 121 drives the alarm transmission mechanism 2 to move, improving the stability of triggering the alarm micro switch 3. Furthermore, by adding the drive shaft 14 to the existing trip latch structure, the structure is simple, does not occupy space, and makes the internal structure of the circuit breaker compact, thereby reducing the size of the circuit breaker.

[0052] like Figure 5 As shown, when the latch assembly 12 is re-fastened, that is, when the circuit breaker is closed, the drive shaft 14 slides in the first slide groove 21 and does not apply force to the alarm transmission mechanism 2. The alarm transmission mechanism 2 moves to reset and does not trigger the alarm micro switch 3, thus completing the switching of the signal issued by the alarm micro switch 3.

[0053] Optionally, such as Figures 4 to 6As shown, the first slide groove 21 is arc-shaped, matching the rotation trajectory of the snap fastener 121. The second slide groove 22 is straight and extends along the direction of movement of the alarm transmission mechanism 2. When the snap fastener assembly 12 is disengaged, the drive shaft 14 abuts against the first end of the first slide groove 21, and the first rotating shaft 13 abuts against the second end of the second slide groove 22. When the snap fastener assembly 12 is re-engaged, the drive shaft 14 is positioned in the middle of the first slide groove 21, and the first rotating shaft 13 abuts against the first end of the second slide groove 22, with the first end positioned above the second end. During the disengagement process of the snap fastener assembly 12, the drive shaft 14 slides within the first slide groove 21 toward the first end of the first slide groove 21. After the drive shaft 14 abuts against the first end of the first slide groove 21, it applies force to the alarm transmission mechanism 2 and drives the alarm transmission mechanism 2 to move. The alarm transmission mechanism 2 moves relative to the first rotating shaft 13, which guides the movement of the alarm transmission mechanism 2. When the latch assembly 12 is in the disengaged state, the drive shaft 14 abuts against the first end of the first slide groove 21, causing the alarm transmission mechanism 2 to be in the state of triggering the alarm micro switch 3. During the process of the latch assembly 12 switching from disengaged to re-engaged, the drive shaft 14 moves to the second end of the first slide groove 21, and the drive shaft 14 no longer applies force to the alarm transmission mechanism 2. The alarm transmission mechanism 2 moves back to its original position until the first rotating shaft 13 abuts against the second end of the second slide groove 22. The first rotating shaft 13 serves to limit the position of the alarm transmission mechanism 2.

[0054] Optionally, the alarm transmission mechanism 2 includes an alarm push rod 23, an alarm contact sliding push rod 24, and an alarm elastic reset member 25. One end of the alarm elastic reset member 25 is fixed, and the other end is connected to one end of the alarm contact sliding push rod 24. The alarm push rod 23 has a first sliding groove 21 and a second sliding groove 22 at both ends. The alarm push rod 23 can apply force to the other end of the alarm contact sliding push rod 24 to drive the alarm contact sliding push rod 24 to move, causing the alarm contact sliding push rod 24 to trigger the alarm micro switch 3, thereby protecting the line and equipment. When the alarm push rod 23 does not apply force to the other end of the alarm contact sliding push rod 24, the alarm elastic reset member 25 is used to reset the alarm contact sliding push rod 24. When the alarm contact sliding push rod 24 is not subjected to external force, the alarm elastic reset member 25 resets the alarm contact sliding push rod 24, and the alarm micro switch 3 is in the open state. When the alarm contact sliding push rod 24 is subjected to the force applied by the alarm push rod 23, the alarm contact sliding push rod 24 moves, triggering the alarm micro switch 3. The alarm elastic reset element 25 can be a compression spring, which is not specifically limited here.

[0055] like Figure 7As shown, the alarm rod 23 includes an alarm rod body 231. The two ends of the alarm rod body 231 are provided with a first sliding groove 21 and a second sliding groove 22. A push plate 232 is provided on one side of the alarm rod body 231. The push plate 232 is set at an angle to the alarm rod body 231 and is set close to the second sliding groove 22. The push plate 232 contacts the other end of the alarm contact sliding push rod 24. The alarm rod 23 applies force to the alarm contact sliding push rod 24 through the push plate 232. The structure is simple and does not occupy space.

[0056] See also Figure 4 As shown, the alarm transmission mechanism 2 also includes an alarm housing 26. The alarm micro switch 3 and the alarm elastic reset component 25 are both disposed inside the alarm housing 26. One end of the alarm elastic reset component 25 is fixed to the inner side wall of the alarm housing 26. One end of the alarm contact sliding push rod 24 is placed inside the alarm housing 26 and connected to the other end of the alarm elastic reset component 25. The other end of the alarm contact sliding push rod 24 is placed outside the alarm housing 26. This realizes the modular arrangement of the alarm micro switch 3, the alarm contact sliding push rod 24 and the alarm elastic reset component 25, which is convenient for installation and disassembly.

[0057] In some embodiments, such as Figure 3 and Figure 8 As shown, the circuit breaker also includes an auxiliary micro switch 7 and an auxiliary transmission mechanism 8. One end of the auxiliary transmission mechanism 8 is rotatably connected to the first rotating shaft 13. When the latch assembly 12 trips, the linkage assembly 15 drives the auxiliary transmission mechanism 8 to trigger the auxiliary micro switch 7, thereby realizing functions such as automated control.

[0058] When the latch assembly 12 is re-fastened, the linkage assembly 15 does not apply force to the auxiliary transmission mechanism 8, the auxiliary transmission mechanism 8 resets and does not trigger the auxiliary micro switch 7, thus completing the switching of the signal issued by the auxiliary micro switch 7.

[0059] Optionally, the auxiliary transmission mechanism 8 includes an auxiliary push rod 81, an auxiliary contact sliding push rod 82, and an auxiliary elastic reset member 83. One end of the auxiliary elastic reset member 83 is fixed, and the other end of the auxiliary elastic reset member 83 is connected to one end of the auxiliary contact sliding push rod 82. One end of the auxiliary push rod 81 is rotatably connected to the first rotating shaft 13, and the other end of the auxiliary contact sliding push rod 82 is in contact with the other end of the auxiliary push rod 81. When the latch assembly 12 is disengaged, the linkage assembly 15 drives the auxiliary push rod 81 to rotate counterclockwise around the first rotating shaft 13, causing the auxiliary contact sliding push rod 82 to move and trigger the auxiliary micro switch 7. When the latch assembly 12 is re-engaged, the linkage assembly 15 does not apply force to the auxiliary push rod 81, and the auxiliary elastic reset member 83 drives the auxiliary contact sliding push rod 82 to reset, causing the auxiliary push rod 81 to rotate clockwise around the first rotating shaft 13, and the auxiliary contact sliding push rod 82 does not trigger the auxiliary micro switch 7. When the auxiliary contact sliding push rod 82 is not subjected to external force, the auxiliary elastic reset member 83 resets the auxiliary contact sliding push rod 82, and the auxiliary micro switch 7 is in the open state. When the auxiliary contact sliding push rod 82 is subjected to the force applied by the auxiliary push rod 81, the auxiliary contact sliding push rod 82 moves, and the auxiliary contact sliding push rod 82 triggers the auxiliary micro switch 7. The auxiliary elastic reset member 83 can be a compression spring, and is not specifically limited here.

[0060] like Figure 9 and Figure 10 As shown, the auxiliary push rod 81 includes a first rod portion 811 and a second rod portion 812. One end of the first rod portion 811 is rotatably connected to the first rotating shaft 13, and the other end of the first rod portion 811 is connected to one end of the second rod portion 812. The second rod portion 812 is set at an angle to the first rod portion 811. A push block 813 is provided between the second rod portion 812 and the first rod portion 811. The push block 813 is used to contact the connecting rod assembly 15, and the second rod portion 812 contacts the other end of the auxiliary contact sliding push rod 82. The push block 813 not only contacts the connecting rod assembly 15 to share the force applied by the connecting rod assembly 15 to the auxiliary push rod 81 and prevent local damage to the auxiliary push rod 81, but also strengthens the connection structure between the first rod portion 811 and the second rod portion 812.

[0061] One end of the first rod portion 811 is provided with an auxiliary insertion slot 814 for inserting the alarm rod 23. On the two opposite side walls of the auxiliary insertion slot 814 are auxiliary through holes 815 for the first rotating shaft 13 to pass through. The first rotating shaft 13 passes through the second sliding groove 22 on the alarm rod 23 and the auxiliary through hole 815, allowing the auxiliary rod 81 and the alarm rod 23 to be rotatably mounted on the first rotating shaft 13. This results in a compact structure that reduces the size of the circuit breaker. Alternatively, the auxiliary insertion slot 814 may not be provided at one end of the first rod portion 811, and the alarm rod 23 may be located on the outside of the first rod portion 811.

[0062] Continue to refer to Figure 8 As shown, the auxiliary transmission mechanism 8 also includes an auxiliary housing 84. The auxiliary micro switch 7 and the auxiliary elastic reset member 83 are both disposed inside the auxiliary housing 84. One end of the auxiliary elastic reset member 83 is fixed to the inner side wall of the auxiliary housing 84. One end of the auxiliary contact sliding push rod 82 is placed inside the auxiliary housing 84 and connected to the other end of the auxiliary elastic reset member 83. The other end of the auxiliary contact sliding push rod 82 is placed outside the auxiliary housing 84. This realizes the modular arrangement of the auxiliary micro switch 7, the auxiliary contact sliding push rod 82 and the auxiliary elastic reset member 83, which facilitates installation and disassembly.

[0063] like Figures 1 to 3 As shown, when the circuit breaker is in the open or tripped state, the moving contact 6 is disconnected from the stationary contact 4. The drive shaft 14 on the trip lever 121 abuts against the first end of the first slide groove 21 of the alarm push rod 23. The alarm push rod 23 applies force to the alarm contact sliding push rod 24, the alarm elastic reset member 25 stores energy, and the alarm contact sliding push rod 24 triggers the alarm micro switch 3. The sliding shaft 156 of the linkage assembly 15 contacts the push block 813 of the auxiliary push rod 81 and applies force to the push block 813, causing the auxiliary push rod 81 to apply force to the auxiliary contact sliding push rod 82. The auxiliary elastic reset member 83 stores energy, and the auxiliary contact sliding push rod 82 triggers the auxiliary micro switch 7. When the circuit breaker switches from the closed state to the open state or the tripped state, the tripping mechanism acts on the latch assembly 12 through the fault protection mechanism to trip the operating mechanism 1, or the operating mechanism 1 is tripped through the handle 159. The operating mechanism 1 drives the rotating shaft mechanism 5 to act, causing the moving contact 6 to separate from the stationary contact 4. At the same time, the trip latch 121 rotates, causing the drive shaft 14 to slide toward the first end of the first slide groove 21 of the alarm push rod 23 and abut against the first end of the first slide groove 21 to drive the alarm push rod 23 to move. The alarm push rod 23 applies force to the alarm contact sliding push rod 24, causing the alarm contact sliding push rod 24 to move, so that the alarm contact sliding push rod 24 triggers the alarm micro switch 3, and the alarm elastic reset component 25 stores energy. At the same time, the linkage assembly 15 moves the sliding shaft 156 along the slide rail 1510. The sliding shaft 156 applies force to the push block 813, causing the auxiliary push rod 81 to rotate around the first rotating shaft 13 and drive the auxiliary contact sliding push rod 82 to move. The auxiliary contact sliding push rod 82 triggers the auxiliary micro switch 7, and the auxiliary elastic reset member 83 stores energy.

[0064] like Figure 5 , Figure 8 and Figure 9As shown, when the circuit breaker is in the closed state, the moving contact 6 and the stationary contact 4 are attracted together. The drive shaft 14 on the trip latch 121 is positioned in the middle of the first slide groove 21 of the alarm push rod 23. The alarm push rod 23 does not apply force to the alarm contact sliding push rod 24. The alarm elastic reset member 25 drives the alarm contact sliding push rod 24 to reset. The alarm contact sliding push rod 24 does not trigger the alarm micro switch 3. The first rotating shaft 13 abuts against the first end of the second slide groove 22 of the alarm push rod 23. The sliding shaft 156 of the linkage assembly 15 does not apply force to the push block 813 of the auxiliary push rod 81. The auxiliary push rod 81 rotates to reset and does not apply force to the auxiliary contact sliding push rod 82. The auxiliary elastic reset member 83 releases energy to drive the auxiliary contact sliding push rod 82 to reset. The auxiliary contact sliding push rod 82 does not trigger the auxiliary micro switch 7.

[0065] When the circuit breaker switches from the open or tripped state to the closed state, the latch assembly 12 re-engages, and the operating mechanism 1 drives the rotating shaft mechanism 5 to actuate, causing the moving contact 6 to engage with the stationary contact 4. Simultaneously, the trip latch 121 rotates, causing the drive shaft 14 to slide towards the second end of the first groove 21 of the alarm push rod 23. The drive shaft 14 no longer applies force to the alarm push rod 23, thereby causing the alarm push rod 23 to no longer apply force to the alarm contact sliding push rod 24. The alarm elastic reset component 25 releases energy, causing the alarm contact sliding push rod 24 to move and reset, thus preventing the alarm contact sliding push rod 24 from triggering the alarm micro switch 3. At the same time, the linkage assembly 15 actuates, causing the sliding shaft 156 to move along the slide rail 1510. The sliding shaft 156 no longer applies force to the push block 813, causing the auxiliary push rod 81 to rotate and reset around the first rotating shaft 13. The auxiliary elastic reset component 83 releases energy, driving the auxiliary contact sliding push rod 82 to move and reset, thus preventing the auxiliary contact sliding push rod 82 from triggering the auxiliary micro switch 7.

[0066] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A circuit breaker, characterized in that, The device includes an operating mechanism (1), an alarm transmission mechanism (2), and an alarm micro switch (3). The operating mechanism (1) includes a bracket (11) and a latch assembly (12). The bracket (11) is provided with a first rotating shaft (13). The latch assembly (12) is rotatably connected to the bracket (11). The latch assembly (12) is provided with a drive shaft (14). The two ends of the alarm transmission mechanism (2) are respectively provided with a first slide groove (21) and a second slide groove (22). The drive shaft (14) is slidably disposed in the first slide groove (21). The first rotating shaft (13) passes through the second slide groove (22). When the latch assembly (12) is disengaged, the drive shaft (14) slides in the first slide groove (21) and drives the alarm transmission mechanism (2) to move, so that the alarm transmission mechanism (2) triggers the alarm micro switch (3).

2. The circuit breaker according to claim 1, characterized in that, The latch assembly (12) includes a snap fastener (121) and a latch (122) connected by a snap fastener. The snap fastener (121) and the latch (122) are rotatably mounted on the bracket (11). The drive shaft (14) is mounted on the snap fastener (121). When the snap fastener (121) disengages from the latch (122), the drive shaft (14) slides in the first slide groove (21) and drives the alarm transmission mechanism (2) to move.

3. The circuit breaker according to claim 1, characterized in that, When the latch assembly (12) is fastened again, the drive shaft (14) slides in the first groove (21) and does not apply force to the alarm transmission mechanism (2), and the alarm transmission mechanism (2) moves to reset and does not trigger the alarm micro switch (3).

4. The circuit breaker according to claim 3, characterized in that, The alarm transmission mechanism (2) includes an alarm top rod (23), an alarm contact sliding push rod (24), and an alarm elastic reset member (25). One end of the alarm elastic reset member (25) is fixed, and the other end of the alarm elastic reset member (25) is connected to one end of the alarm contact sliding push rod (24). The alarm top rod (23) has a first sliding groove (21) and a second sliding groove (22) at both ends. The alarm top rod (23) can apply force to the other end of the alarm contact sliding push rod (24) to drive the alarm contact sliding push rod (24) to move, so that the alarm contact sliding push rod (24) triggers the alarm micro switch (3). When the alarm top rod (23) does not apply force to the other end of the alarm contact sliding push rod (24), the alarm elastic reset member (25) is used to reset the alarm contact sliding push rod (24).

5. The circuit breaker according to claim 4, characterized in that, The alarm rod (23) includes an alarm rod body (231). The alarm rod body (231) has a first sliding groove (21) and a second sliding groove (22) at both ends. A push plate (232) is provided on one side of the alarm rod body (231). The push plate (232) is set at an angle to the alarm rod body (231) and is located close to the second sliding groove (22). The push plate (232) is in contact with the other end of the alarm contact sliding push rod (24).

6. The circuit breaker according to claim 3, characterized in that, The first slide groove (21) is arc-shaped, the second slide groove (22) is straight, and the second slide groove (22) extends along the direction of movement of the alarm transmission mechanism (2). When the latch assembly (12) is disengaged, the drive shaft (14) abuts against the first end of the first slide groove (21), and the first rotating shaft (13) abuts against the second end of the second slide groove (22). When the latch assembly (12) is re-fastened, the drive shaft (14) is positioned in the middle of the first slide groove (21), and the first rotating shaft (13) abuts against the first end of the second slide groove (22), wherein the first end is positioned above the second end.

7. The circuit breaker according to claim 1, characterized in that, The operating mechanism (1) further includes a linkage assembly (15) and a rocker arm assembly (16). The linkage assembly (15) is rotatably connected to the buckle assembly (12), and the rocker arm assembly (16) is rotatably connected to the bracket (11). The rocker arm assembly (16) is connected to the linkage assembly (15). The circuit breaker also includes: Static contact (4); A rotating shaft mechanism (5) is connected to the connecting rod assembly (15). The rotating shaft mechanism (5) is connected to a moving contact (6). The rocker arm assembly (16) drives the rotating shaft mechanism (5) to move through the connecting rod assembly (15), so that the moving contact (6) and the stationary contact (4) are attracted or separated. Auxiliary micro switch (7); An auxiliary transmission mechanism (8) is provided, one end of which is rotatably connected to the first rotating shaft (13). When the latch assembly (12) is disengaged, the linkage assembly (15) is used to drive the auxiliary transmission mechanism (8) to move, so that the auxiliary transmission mechanism (8) triggers the auxiliary micro switch (7).

8. The circuit breaker according to claim 7, characterized in that, When the latch assembly (12) is re-fastened, the linkage assembly (15) does not apply force to the auxiliary transmission mechanism (8), the auxiliary transmission mechanism (8) resets and does not trigger the auxiliary micro switch (7).

9. The circuit breaker according to claim 8, characterized in that, The auxiliary transmission mechanism (8) includes an auxiliary push rod (81), an auxiliary contact sliding push rod (82), and an auxiliary elastic reset member (83). One end of the auxiliary elastic reset member (83) is fixed, and the other end of the auxiliary elastic reset member (83) is connected to one end of the auxiliary contact sliding push rod (82). One end of the auxiliary push rod (81) is rotatably connected to the first rotating shaft (13), and the other end of the auxiliary contact sliding push rod (82) is in contact with the other end of the auxiliary push rod (81). When the latch assembly (12) is released, the linkage assembly (15) drives the auxiliary push rod (81) to rotate counterclockwise around the first rotation axis (13), causing the auxiliary contact sliding push rod (82) to move to trigger the auxiliary micro switch (7); When the latch assembly (12) is re-fastened, the linkage assembly (15) does not apply force to the auxiliary push rod (81), and the auxiliary elastic reset member (83) is used to drive the auxiliary contact sliding push rod (82) to reset, so that the auxiliary push rod (81) rotates clockwise around the first rotation axis (13), and the auxiliary contact sliding push rod (82) does not trigger the auxiliary micro switch (7).

10. The circuit breaker according to claim 9, characterized in that, The auxiliary push rod (81) includes a first rod portion (811) and a second rod portion (812). One end of the first rod portion (811) is rotatably connected to the first rotating shaft (13), and the other end of the first rod portion (811) is connected to one end of the second rod portion (812). The second rod portion (812) is set at an angle to the first rod portion (811). A push block (813) is provided between the second rod portion (812) and the first rod portion (811). The push block (813) is used to contact the connecting rod assembly (15). The second rod portion (812) is in contact with the other end of the auxiliary contact sliding push rod (82).

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