Accessory module for circuit breaker

Abstract

This utility model relates to an accessory module for a circuit breaker, comprising: a bracket, an auxiliary contact, a trigger, and a transmission assembly; the auxiliary contact is disposed on the bracket; the trigger is used to trigger the action of the auxiliary contact; the transmission assembly is connected to the trigger to drive the trigger to move; wherein the trigger is rotatably disposed; the transmission assembly includes a first transmission component and a second transmission component, the second transmission component is connected to the trigger, and the first and second transmission components abut against each other via inclined surfaces to transmit motion. Compared with the prior art, this utility model, by using inclined surfaces to abut against the trigger, causes the first transmission component to rotate, which in turn causes the first transmission component to leave the inclined surface on the second transmission component. The first transmission component then engages with the plane below the inclined surface of the second transmission component. At this point, even if the first transmission component continues to rotate, the trigger will not continue to rotate, avoiding excessive impact on related parts caused by excessive rotation of the first transmission component. This is beneficial for improving reliability and service life.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to an accessory module for circuit breakers. Background Technology

[0002] Circuit breakers are functionally categorized into two main groups: "inherent functions" and "extended functions." The circuit breaker itself possesses mechanical state-maintaining functions such as main circuit switching, fault detection, and tripping. However, to achieve functions like state awareness, remote control, interlocking, communication, monitoring, and fault location, specialized accessory modules are required. Today, accessory modules have gradually evolved from optional components to essential parts of system design.

[0003] In order to meet the stringent requirements of modern power systems for the functional integration of circuit breakers, the configuration of the number of auxiliary contacts has evolved into a necessity-aware structural resource.

[0004] However, small-frame circuit breakers in related technologies are characterized by their small size and compact structure. It is often difficult to arrange more auxiliary contacts within a small space, resulting in low space utilization.

[0005] Therefore, it is necessary to develop a new type of accessory module for circuit breakers to improve some of the problems existing in the related technology. Utility Model Content

[0006] The purpose of this utility model is to provide an accessory module for circuit breakers that can improve the utilization rate of the internal space of the circuit breaker, thereby increasing the number of auxiliary contacts.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] The accessory module for a circuit breaker provided by this utility model includes: a bracket, an auxiliary contact, a trigger, and a transmission assembly; the auxiliary contact is disposed on the bracket; the trigger is used to trigger the action of the auxiliary contact; the transmission assembly is connected to the trigger to drive the trigger to move; wherein, the trigger is rotatably disposed; the transmission assembly includes a first transmission member and a second transmission member, the first transmission member is used to connect to the circuit breaker shaft, the second transmission member is connected to the trigger, and the first transmission member and the second transmission member abut against each other through inclined surfaces to transmit motion, so that the trigger rotates and triggers the action of the auxiliary contact.

[0009] Furthermore, the first transmission member is a rod-shaped structure, and the second transmission member has an inclined surface, with the side of the first transmission member abutting against the inclined surface.

[0010] Furthermore, the second transmission member is provided with an inclined surface, wherein the inclined surface is lower on the side near the rotation center of the trigger member than on the other side.

[0011] Furthermore, the plane perpendicular to the rotation axis of the trigger member and the plane perpendicular to the rotation axis of the first transmission member are perpendicular to each other.

[0012] Furthermore, the number of auxiliary contacts is at least two, and the trigger is a plate-shaped structure used to synchronously trigger the auxiliary contacts after rotation.

[0013] Furthermore, the trigger has a stepped structure, creating a height difference on the surface of the trigger to synchronously trigger the auxiliary contact that has a positional deviation.

[0014] Furthermore, the bracket includes a first layer plate and a second layer plate, and the auxiliary contact is respectively disposed on the first layer plate and the second layer plate. The end of the first layer plate protrudes from the end of the second layer plate to match the stepped structure of the trigger.

[0015] Furthermore, the bracket includes a positioning shaft, the trigger is disposed on the positioning shaft, the positioning shaft is vertically disposed between the first layer plate and the second layer plate, and one end of the positioning shaft is connected to the surface of the first layer plate that protrudes from the surface of the second layer plate.

[0016] Furthermore, the accessory module also includes a shunt excitation assembly, which includes a shunt excitation core and a shunt excitation tie rod. The shunt excitation tie rod includes a first fitting groove and a second fitting groove, which are interconnected to form a T-shaped fitting structure for fitting and connecting the shunt excitation core.

[0017] Furthermore, the first fitting groove forms the horizontal end of the T-shaped fitting structure, and the first fitting groove is a through groove; the second fitting groove forms the tail end of the T-shaped fitting structure, and the second fitting groove is a blind groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The accessory module of this utility model transmits motion through the first and second transmission components in the transmission assembly, which abut against each other on inclined surfaces. After the trigger rotates due to the abutment of the inclined surfaces, the first transmission component will leave the inclined surface on the second transmission component and will cooperate with the plane below the inclined surface of the second transmission component. At this time, even if the first transmission component continues to rotate, the trigger will not continue to rotate, thus avoiding excessive impact on related parts caused by excessive rotation of the first transmission component. This is beneficial to improving reliability and service life.

[0020] 2. This utility model provides an inclined surface on the second transmission component, with the inclined surface being lower on the side near the rotation center of the trigger component than on the other side. When the rod-shaped first transmission component abuts against the inclined surface on the second transmission component with its rod side, the trigger component connected to the second transmission component can rotate. Since the plane perpendicular to the rotation axis of the trigger component and the plane perpendicular to the rotation axis of the first transmission component are perpendicular to each other, a 90° rotational change between the first transmission component and the trigger component can be achieved. Under compact space conditions, it can flexibly meet the state changes of different motion directions, which is conducive to optimizing the structural layout and reducing the space occupancy rate.

[0021] 3. This utility model designs the trigger element as a plate-like structure, which enables at least two auxiliary contacts to be triggered synchronously when it rotates.

[0022] 4. This utility model designs the trigger element as a stepped structure, which enables two auxiliary contacts with height differences at different positions to be triggered synchronously when it rotates.

[0023] 5. This utility model has a first layer plate on the support that protrudes from the end of the second layer plate, so that there is a positional deviation in the space for accommodating auxiliary contacts on different layers of the support. This allows for more flexibility in setting auxiliary contacts, which is beneficial for space utilization and avoids interference with other components of the circuit breaker.

[0024] 6. This utility model, by setting a first fitting groove and a second fitting groove on the shunt excitation rod to form a T-shaped fitting structure, facilitates the installation between the shunt excitation rod and the shunt excitation core, has a simple structure, and is reliable in operation.

[0025] 7. This utility model sets the first fitting groove on the shunt excitation rod as a through groove and sets a protruding structure on its inner wall. When the shunt excitation core is installed in place, the protruding structure can lock the shunt excitation core to prevent it from loosening, which helps to improve reliability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the cooperation between the accessory module and the circuit breaker shaft when the circuit breaker is closed in an embodiment of this utility model.

[0027] Figure 2 This is a schematic diagram showing the cooperation between the accessory module and the circuit breaker shaft when the circuit breaker is tripped in an embodiment of this utility model.

[0028] Figure 3 This is a schematic diagram showing the cooperation between the transmission component and the trigger element in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the accessory module in an embodiment of the present utility model;

[0030] Figure 5 for Figure 4The diagram shows the interaction between the auxiliary contact and the trigger element;

[0031] Figure 6 for Figure 5 The diagram shows the interaction between the auxiliary contact and the support.

[0032] Figure 7 for Figure 4 The diagram shows the structure of the trigger element;

[0033] Figure 8 for Figure 6 The diagram shows the structure of the support frame.

[0034] Figure 9 for Figure 4 The diagram shows the connection between the shunt coil and the shunt rod.

[0035] Figure 10 for Figure 9 The diagram shows the connection between the shunt coil and the disconnecting core.

[0036] Figure 11 for Figure 9 The diagram shows the bottom structure of the shunt actuator.

[0037] Figure 12 for Figure 1 The diagram shows the connection between the housing, the shunt rod, the alarm push rod, and the second transmission component.

[0038] Figure label:

[0039] 1. Bracket; 11. First layer plate; 12. Second layer plate; 13. Third layer plate; 14. Limiting rib; 15. Positioning rib; 16. Positioning pivot; 17. Pull rod limiting pivot; 2. Auxiliary contact; 21. Trigger switch; 3. Trigger element; 4. Transmission assembly; 41. First transmission element; 42. Second transmission element; 43. Inclined surface; 5. Circuit breaker pivot; 61. Shunt coil; 62. Shunt core; 621. Annular boss; 63. Shunt pull rod; 631. First fitting groove; 632. Second fitting groove; 633. Pull rod guide groove; 71. Alarm unit; 72. Alarm push rod; 73. Reset spring; 81. Housing; 82. Top cover. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0041] This utility model embodiment provides an accessory module for a circuit breaker, see reference. Figure 1 , Figure 2 and Figure 3 The accessory module includes: a bracket 1, an auxiliary contact 2, a trigger 3, and a transmission assembly 4; the auxiliary contact 2 is disposed on the bracket 1; the trigger 3 is used to trigger the action of the auxiliary contact 2; the transmission assembly 4 is connected to the trigger 3 to drive the trigger 3 to move; wherein, the trigger 3 is rotatably disposed; the transmission assembly 4 includes a first transmission component 41 and a second transmission component 42, the first transmission component 41 is used to connect to the circuit breaker shaft 5, the second transmission component 42 is connected to the trigger 3, the first transmission component 41 and the second transmission component 42 abut against each other through an inclined surface 43 to transmit motion, so that the trigger 3 rotates and triggers the action of the auxiliary contact 2.

[0042] In some embodiments of this utility model, the number of auxiliary contacts 2 is at least two, and the trigger 3 is a plate-shaped structure used to synchronously trigger the auxiliary contacts 2 after rotation.

[0043] In some embodiments of this utility model, reference is made to... Figure 6 The bracket 1 includes a first plate 11 and a second plate 12. The auxiliary contacts 2 are respectively disposed on the first plate 11 and the second plate 12. The end of the first plate 11 protrudes from the end of the second plate 12 to match the stepped structure of the trigger 3.

[0044] In some specific embodiments, reference is made to Figure 6 A first receiving space is formed on the side of the first layer plate 11 facing away from the second layer plate 12 for setting the first layer auxiliary contact 2; a second receiving space is formed between the first layer plate 11 and the second layer plate 12 for setting the second layer auxiliary contact 2.

[0045] In some specific embodiments, reference is made to Figure 6 The bracket 1 also includes a third layer plate 13, and a third accommodating space is formed between the second layer plate 12 and the third layer plate 13. The first accommodating space, the second accommodating space and the third accommodating space are respectively provided with a first layer of auxiliary contact 2, a second layer of auxiliary contact 2 and a third layer of auxiliary contact 2.

[0046] In some specific embodiments, reference is made to Figure 6 and Figure 8 The first, second, or third accommodating space has an installation opening on one side for inserting the auxiliary contact 2; the other side opposite the installation opening has several limiting ribs 14 for abutting and limiting the auxiliary contact 2 after it is inserted.

[0047] In some specific embodiments, reference is made to Figure 8 The first layer plate 11 and the second layer plate 12 are connected by limiting ribs 14, or the second layer plate 12 and the third layer plate 13 are connected in pairs.

[0048] In some specific embodiments, reference is made to Figure 8The first, second, or third accommodating space is also provided with positioning ribs 15 around it. The positioning ribs 15 and the limiting ribs 14 together limit the auxiliary contact 2.

[0049] In some specific embodiments, reference is made to Figure 8 The first layer plate 11 and the second layer plate 12, or the second layer plate 12 and the third layer plate 13, are connected by positioning ribs 15.

[0050] In some specific embodiments, reference is made to Figure 8 The positioning ribs 15 between the first layer plate 11 and the second layer plate 12 are respectively connected to the middle area of ​​the first layer plate 11 and the second layer plate 12, and the positioning ribs 15 between the second layer plate 12 and the third layer plate 13 are respectively connected to the end areas of the second layer plate 12 and the third layer plate 13.

[0051] In some embodiments of this utility model, reference is made to... Figure 5 and Figure 8 The bracket 1 includes a positioning shaft 16, and a trigger 3 is disposed on the positioning shaft 16. The positioning shaft 16 is vertically disposed between the first layer plate 11 and the second layer plate 12. One end of the positioning shaft 16 is connected to the surface of the first layer plate 11 that protrudes from the surface of the second layer plate 12, and the other end is connected to the surface of the second layer plate 12.

[0052] In some specific embodiments, reference is made to Figure 6 and Figure 8 In the direction of the mounting opening of the bracket 1 pointing towards the limiting rib 14, the length of the first layer plate 11 is greater than that of the second layer plate 12 or the third layer plate 13, so that when one end of the first layer plate 11 is flush with the second layer plate 12 or the third layer plate 13, the other end of the first layer plate 11 where the mounting opening is located protrudes from the second layer plate 12 or the third layer plate 13.

[0053] In some specific embodiments, reference is made to Figure 6 With him 8, the ends of the first auxiliary contact 2, the second auxiliary contact 2 and the third auxiliary contact 2 are flush with the ends of the first plate 11, the second plate 12 and the third plate 13. Due to the length difference between the first plate 11, the second plate 12 and the third plate 13, there is also a deviation between the setting positions of the first auxiliary contact 2, the second auxiliary contact 2 and the third auxiliary contact 2.

[0054] In some specific embodiments, reference is made to Figure 8 The ends of the second auxiliary contact 2 and the third auxiliary contact 2 are flush and there is no positional deviation; there is a positional deviation between the first auxiliary contact 2 and the second or third auxiliary contact 2.

[0055] In some specific embodiments, reference is made to Figure 8The auxiliary contact 2 is positioned such that the trigger switch 21 of the auxiliary contact 2 is located at the mounting opening. The positioning shaft 16 is located at the end of the side where the mounting opening is located. The auxiliary contact 2 is provided with a contact, micro switch or control push rod at the end near the mounting opening, so that the trigger 3 can abut against the trigger switch 21 at the contact end after rotation. The trigger switch 21 can be a contact, micro switch or control push rod.

[0056] In some embodiments of this utility model, reference is made to... Figure 7 The trigger 3 has a stepped structure, which creates a height difference on the surface of the trigger 3 so as to synchronously trigger the auxiliary contact 2, which has a positional deviation.

[0057] In some embodiments of this utility model, reference is made to... Figure 3 The first transmission component 41 is a rod-shaped structure, and the second transmission component 42 is provided with an inclined surface 43. The first transmission component 41 abuts against the inclined surface 43 with the side of the rod.

[0058] In some specific embodiments, reference is made to Figure 1 , Figure 2 and Figure 3 One end of the first transmission component 41 is connected to the circuit breaker shaft 5, and the other end rotates synchronously with the shaft. When the circuit breaker is closed, the first transmission component 41 and the second transmission component 42 do not contact each other, and the auxiliary contact 2 outputs a closing signal. When the circuit breaker is opened, the first transmission component 41 abuts against the inclined surface 43 on the second transmission component 42, drives the trigger component 3 to rotate and triggers the auxiliary contact 2, and the auxiliary contact 2 outputs an opening signal.

[0059] In some specific embodiments, reference is made to Figure 5 The second transmission member 42 is connected to the other side of the trigger member 3 opposite to the positioning shaft 16. When the inclined surface 43 on the second transmission member 42 is rotated and abutted by the first transmission member 41, the trigger member 3 can rotate around the positioning shaft 16 and trigger the auxiliary contact 2.

[0060] In some embodiments of this utility model, reference is made to... Figure 5 The second transmission component 42 is provided with an inclined surface 43. The inclined surface 43 is lower on the side near the rotation center of the trigger component 3 than on the other side, that is, the side of the inclined surface 43 near the positioning shaft 16 is lower than on the other side.

[0061] In some specific embodiments, the direction of the inclined surface 43 on the second transmission member 42 is consistent with the radial direction of the rotation of the trigger member 3.

[0062] In some embodiments of this utility model, reference is made to... Figure 3 and Figure 5 The plane perpendicular to the rotation axis of the trigger 3 is perpendicular to the plane perpendicular to the rotation axis of the first transmission member 41.

[0063] In some specific embodiments, reference is made to Figure 3 and Figure 5 The plane perpendicular to the positioning shaft 16 and the plane perpendicular to the circuit breaker shaft 5 are perpendicular to each other. When the first transmission member 41 abuts against the inclined surface 43 on the second transmission member 42, the rotation direction of the trigger member 3 changes by 90° with the rotation direction of the circuit breaker shaft 5.

[0064] In some embodiments of this utility model, reference is made to... Figure 3 The first transmission component 41 does not have an inclined surface 43, while the second transmission component 42 has an inclined surface 43.

[0065] In some other embodiments, the first transmission member 41 is provided with an inclined surface 43, while the second transmission member 42 is not provided with an inclined surface 43; or, both the first transmission member 41 and the second transmission member 42 are provided with inclined surfaces 43. It should be noted that the specific structure or principle in these embodiments is similar to the structure or principle in which only the first transmission member 41 is provided with an inclined surface 43, so it will not be described again here.

[0066] In some specific embodiments, triggering the auxiliary contact 2 includes triggering the reset of the auxiliary contact 2, so that the auxiliary contact 2 returns to its initial state along with the circuit breaker.

[0067] In other embodiments, the positioning shaft 16 is disposed between the first layer plate 11 and the third layer plate 13, with one end of the positioning shaft 16 connected to the surface of the first layer plate 11 that protrudes from the second layer plate 12 and the third layer plate 13, and the other end connected to the surface of the third layer plate 13.

[0068] In other embodiments, the positioning shaft 16 connects the first layer plate 11, the second layer plate 12 and the third layer plate 13 simultaneously. The positioning shaft 16 passes through the second layer plate 12. One end of the positioning shaft 16 is connected to the surface of the first layer plate 11 that protrudes from the second layer plate 12 and the third layer plate 13, and the other end is connected to the surface of the third layer plate 13.

[0069] In some embodiments of this utility model, reference is made to... Figure 9 , Figure 10 and Figure 11 The accessory module also includes a shunt excitation assembly, which includes a shunt excitation coil 61, a shunt excitation core 62, and a shunt excitation pull rod 63. The shunt excitation pull rod 63 includes a first fitting groove 631 and a second fitting groove 632. The first fitting groove 631 and the second fitting groove 632 are interconnected to form a T-shaped fitting structure, which is used to fit and connect the shunt excitation core 62.

[0070] In some embodiments of this utility model, reference is made to... Figure 9 and Figure 11 The first fitting groove 631 forms the horizontal end of the T-shaped fitting structure and is a through groove; the second fitting groove 632 forms the tail end of the T-shaped fitting structure and is a blind groove.

[0071] In other embodiments, a portion of the second fitting groove 632 is a through groove, and another portion is a blind groove.

[0072] In some specific embodiments, reference is made to Figure 10 and Figure 11 The first fitting groove 631 and the second fitting groove 632 are both located on the bottom surface of the shunt pull rod 63, and the shunt pull rod 63 fits into the shunt core 62 from above.

[0073] In some specific embodiments, a protruding structure is provided on the inner wall of the first fitting groove 631 and the second fitting groove 632. When the shunt core is installed in place, the protruding structure can hold the shunt core in place.

[0074] In some specific embodiments, reference is made to Figure 9 The first fitting groove 631 extends vertically through the upper and lower surfaces of the shunt pull rod 63.

[0075] In some specific embodiments, reference is made to Figure 10 The shunt coil 61 and the shunt core 62 are disposed on the top of the bracket 1. The end of the shunt core 62 is provided with an annular boss 621, which is embedded in the first fitting groove 631, and the rod part of the shunt core 62 is embedded in the second fitting groove 632.

[0076] In some specific embodiments, reference is made to Figure 9 The shunt trip rod 63 has an L-shaped structure, with one end fitted into the shunt trip iron core 62 and the other end connected to the traction plate of the circuit breaker tripping mechanism.

[0077] In some specific embodiments, reference is made to Figure 9 The top of the bracket 1 is also provided with a pull rod limiting shaft 17, which is set horizontally. The shunt pull rod 63 is provided with a pull rod guide groove 633. The shunt pull rod 63 is sleeved on the pull rod limiting shaft 17 through the pull rod guide groove 633, which is used to guide and limit the movement of the shunt pull rod 63.

[0078] In some embodiments of this utility model, reference is made to... Figure 4 The accessory module also includes an alarm unit 71 and an alarm push rod 72. Both the alarm unit 71 and the alarm push rod 72 are located on the side of the bracket 1. The alarm push rod 72 is rotatable and is used to reset the alarm unit 71 after rotation. The alarm push rod 72 has a V-shaped structure and a reset spring 73 is provided at the end of the alarm push rod 72.

[0079] In some specific embodiments, reference is made to Figure 12The accessory module includes a housing 81 and a top cover 82, which are used to house the bracket 1, auxiliary contact 2, trigger 3, shunt core 62, and alarm unit 71. The housing 81 is provided with several operating openings, so that the second transmission member 42 connecting the trigger 3, the shunt pull rod 63 connecting the shunt core 62, and the alarm push rod 72 connecting the alarm unit 71 can extend from the inside of the housing 81 to the outside of the housing 81 through the operating openings.

[0080] In some embodiments of this utility model, the first transmission component 41 and the trigger component 3 are integrally formed.

[0081] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0084] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0085] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0086] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An accessory module for a circuit breaker, characterized in that, include: Support (1), An auxiliary contact (2) is disposed on the bracket (1); Trigger (3) is used to trigger the action of the auxiliary contact (2); A transmission assembly (4) is connected to the trigger (3) to drive the trigger (3) to move; The trigger (3) is rotatably mounted; the transmission assembly (4) includes a first transmission member (41) and a second transmission member (42). The first transmission member (41) is used to connect the circuit breaker shaft (5), and the second transmission member (42) is connected to the trigger (3). The first transmission member (41) and the second transmission member (42) abut against each other through an inclined surface (43) to transmit motion, so that the trigger (3) rotates and triggers the auxiliary contact (2) to act.

2. The accessory module according to claim 1, characterized in that, The first transmission member (41) is a rod-shaped structure, and the second transmission member (42) is provided with an inclined surface (43). The first transmission member (41) abuts against the inclined surface (43) with the side of the rod.

3. The accessory module according to claim 1, characterized in that, The second transmission member (42) is provided with an inclined surface (43), and the inclined surface (43) is lower on the side near the rotation center of the trigger member (3) than on the other side.

4. The accessory module according to claim 1, characterized in that, The plane perpendicular to the rotation axis of the trigger (3) is perpendicular to the plane perpendicular to the rotation axis of the first transmission member (41).

5. The accessory module according to claim 1, characterized in that, The number of auxiliary contacts (2) is at least two, and the trigger (3) is a plate-shaped structure used to synchronously trigger the auxiliary contacts (2) after rotation.

6. The accessory module according to claim 5, characterized in that, The trigger (3) has a stepped structure, which creates a height difference on the surface of the trigger (3) to synchronously trigger the auxiliary contact (2) which has a positional deviation.

7. The accessory module according to claim 6, characterized in that, The bracket (1) includes a first layer plate (11) and a second layer plate (12). The auxiliary contact (2) is respectively disposed on the first layer plate (11) and the second layer plate (12). The end of the first layer plate (11) protrudes from the end of the second layer plate (12) to match the stepped structure of the trigger (3).

8. The accessory module according to claim 7, characterized in that, The bracket (1) includes a positioning shaft (16), the trigger (3) is disposed on the positioning shaft (16), the positioning shaft (16) is vertically disposed between the first layer plate (11) and the second layer plate (12), and one end of the positioning shaft (16) is connected to the surface of the first layer plate (11) protruding from the surface of the second layer plate (12).

9. The accessory module according to claim 1, characterized in that, It also includes a shunt excitation assembly, which includes a shunt excitation core (62) and a shunt excitation tie rod (63). The shunt excitation tie rod (63) includes a first fitting groove (631) and a second fitting groove (632). The first fitting groove (631) and the second fitting groove (632) are interconnected to form a T-shaped fitting structure for fitting and connecting the shunt excitation core (62).

10. The accessory module according to claim 9, characterized in that, The first fitting groove (631) forms the horizontal end of the T-shaped fitting structure, and the first fitting groove (631) is a through groove; the second fitting groove (632) forms the tail end of the T-shaped fitting structure, and the second fitting groove (632) is a blind groove.

Images