A circuit breaker electrical connection transmission device

Abstract

The utility model discloses a circuit breaker electric connection transmission device, including electric connection subassembly, pivot subassembly, open door connecting rod, slide plate subassembly, position signal subassembly, drive board subassembly, the body female row. Through the integral round edge of cantilever, drive wheel on pivot subassembly respectively sets up several first contact section and drive tooth, and the contact groove on drive board coupling makes drive board subassembly can drive pivot subassembly to rotate 360 degrees above, realizes transmission stroke lengthening, and the contact length is long, not only has reduced contact internal resistance, and can bear the electric repulsion of large current, makes circuit breaker electric connection obtain better contact performance, and product reliability, energy consumption, life, temperature rise etc. Performance is improved obviously.

Description

Technical Field

[0001] This utility model relates to low-voltage power distribution equipment, and in particular to a transmission device for the electrical connection of a circuit breaker. Background Technology

[0002] In low-voltage power distribution equipment, electrical connection structures are often used to enable rapid deployment and connection of components such as circuit breakers to power lines, or to facilitate rapid disconnection and isolation during maintenance. To achieve good electrical contact performance, these structures require significant clamping force and a long contact length. A longer contact length results in lower contact resistance, less harmful electromagnetic force generated at the contact surface during conduction, better contact, and higher contact performance. However, a longer contact length necessitates a longer transmission distance for the circuit breaker's current-carrying mechanism within a limited space. Currently, such as... Figure 1 The conventional circuit breaker electrical connection transmission device shown has a rotating shaft assembly 2a consisting of a main shaft 201a with a cantilever 202a and a drive wheel 203a fixed on it. A drive plate 605a slides on a base plate 8a. Driving the drive plate 605a horizontally relative to the base plate 8a rotates the rotating shaft assembly 2a, thus driving the connection and isolation between the circuit breaker and the electrical connection assembly. Due to space limitations, only about a quarter-turn drive tooth 2031a can be provided on the drive wheel 203a. Correspondingly, about a quarter-turn first contact section 2021a is provided on the cantilever 202a. The first contact section 2021a is equivalent to a quarter-turn gear and couples with the contact groove 60511a on the drive plate 605a. The drive plate 605a can only drive the rotating shaft assembly 2a to rotate about 90 degrees, resulting in a limited transmission distance. This makes it difficult to extend the contact length of the electrical connection, and the contact performance is not ideal. The reduced effective contact area between the circuit breaker's connection terminals and the conductive components of the electrical connection structure leads to decreased contact quality and increased contact resistance. This causes the temperature rise of the electrical connection structure to increase exponentially during prolonged operation, easily resulting in overheating and burnout of the electrical connection links, which seriously affects the operational safety and reliability of the equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a circuit breaker electrical connection transmission device that can significantly extend the transmission distance, so as to solve the problems of poor contact and safety hazards in circuit breaker electrical connection devices.

[0004] To achieve the above objectives, this utility model designs a circuit breaker electrical connection transmission device, including an electrical connection assembly, a rotating shaft assembly, a door opening linkage, a sliding plate assembly, a position signal assembly, a drive plate assembly, and a main body busbar. The drive plate assembly is coupled to the rotating shaft assembly, and the drive plate assembly drives the rotating shaft assembly to rotate, which in turn drives the main body busbar to move, thereby connecting or isolating it from the electrical connection assembly (1). The rotating shaft assembly includes a shaft, a cantilever, and a drive wheel. The cantilever and the drive wheel are fastened to the shaft. The cantilever is a circular plate with multiple first contact segments distributed along the entire circular edge of the cantilever. The drive wheel is a circular plate with multiple drive teeth distributed along the entire circular edge of the drive wheel.

[0005] Furthermore, the drive plate assembly includes an indicator drive element, a drive rod, a rolling element, a connecting seat, a drive plate, and a limiting plate. The connecting seat is fixed to the drive plate. The drive rod rotatably passes through the connecting seat and is coupled to it; rotation of the drive rod drives the connecting seat and the drive plate to move together in the horizontal direction. The rolling element is rotatably mounted on the connecting seat. The rolling element contacts the limiting plate.

[0006] Furthermore, the drive plate is an L-shaped plate. A vertical section is provided on the side of the drive plate near the drive rod, and a drive hole is provided in the middle of the vertical section through which the drive rod rotatably passes. An indicator drive element is fixed on one side of the vertical section. A horizontal plate is provided on the drive plate facing the electrical connection assembly, and several rows of contact grooves are provided on the horizontal plate. The row positions of the contact grooves correspond to the cantilever, the width of the contact groove is greater than the thickness of the cantilever, the spacing between adjacent contact grooves matches the first contact segment, and the number of contact grooves in each row is greater than or equal to the number of first contact segments on the corresponding cantilever.

[0007] Furthermore, the electrical connection assembly includes a first insulating plate, a second insulating plate, and an insulating base. The first insulating plate is fixed to the insulating base and has a plurality of connection holes, the position, size, and number of which correspond to the main busbar, and the connection holes are through holes. The second insulating plate is located between the first insulating plate and the insulating base, and the second insulating plate is movable in the vertical direction.

[0008] Furthermore, a first driving section and a second driving section are provided on the left and right sides of the second insulating plate, and a driving cavity is provided between the first driving section and the second driving section. The second insulating plate is provided with a plurality of through holes, the positions and sizes of which correspond to the main busbar. The second insulating plate is also provided with elongated U-shaped, vertically oriented guide holes.

[0009] Furthermore, the skateboard assembly has protruding support features, and the skateboard assembly moves in the horizontal direction.

[0010] Furthermore, the door opening linkage is provided with a rotating hole, through which the door opening linkage can be rotatably installed. The door opening linkage has a first contact feature and a second contact feature at one end near the support feature, with a smooth transition between the two features. The door opening linkage has a first driving edge and a second driving edge on its upper and lower sides near the electrical connection assembly, respectively. The support feature contacts the first and second contact features, driving the door opening linkage to rotate. The door opening linkage is coupled to a first driving segment on the second insulating plate via the first driving edge, and the second driving edge on the door opening linkage is coupled to the first driving segment on the second insulating plate, thereby driving the second insulating plate to move vertically.

[0011] Furthermore, the position signal assembly includes a signal mounting housing and a micro switch. The lower part of the signal mounting housing is a mounting base, and the upper part is a recessed mounting cavity. The signal mounting housing is fixed to the side of the drive plate near where the indicating drive component is mounted. The mounting cavity of the signal mounting housing faces the drive plate. The signal mounting housing is arranged at the corresponding connection, testing, and isolation positions on the drive plate. The micro switch is fixed inside the mounting cavity, and the signal contacts on the micro switch face the drive plate.

[0012] Furthermore, the indicating drive component has a trigger protrusion on the side facing the position signal assembly. When the indicating drive component moves with the drive plate to the designated position, the trigger protrusion contacts and compresses the signal contact on the micro switch, issuing a position signal. When the indicating drive component moves with the drive plate away from the designated position, the trigger protrusion gradually disengages from the signal contact on the micro switch, issuing a disengagement signal.

[0013] Furthermore, the position signal component (5) includes a first micro switch (51) and a second micro switch (52). The indicator drive member (601) is provided with a first trigger protrusion (6012) and a second trigger protrusion (6013) on the side facing the position signal component (5). The first trigger protrusion (6012) and the second trigger protrusion (6013) are distributed at intervals along the thickness direction of the drive plate (605) on the indicator drive member (601), and the first trigger protrusion (6012) and the second trigger protrusion (6013) are distributed at intervals along the length direction of the drive plate (605). The first trigger convex (6012) can trigger the signal contact (5021) of the micro switch (502) in the first micro switch (51), or the second trigger convex (6013) can trigger the signal contact (5021) of the micro switch (502) in the second micro switch (52).

[0014] Furthermore, it also includes a base plate (8), on which a bent support plate (801) for supporting the shaft (201) is provided. The bent support plate (801) is perpendicular to the base plate (8), and the bent support plate (801) is provided with a semi-circular notch corresponding to the shaft (201). The shaft (201) is rotatably engaged with the semi-circular notch.

[0015] Furthermore, the drive rod (602) passes through the bent plate (802) at the end of the base plate (8), and the drive rod (602) is rotatably engaged with the bent plate (802). Two thrust bearings (607) located on both sides of the bent plate (802) are fixedly sleeved on the drive rod (602), and the two thrust bearings (607) are respectively fixedly connected to the bent plate (802).

[0016] The technical advantages of this invention are achieved by setting the first contact section and drive teeth on the full circular edge of the cantilever and drive wheel respectively, and coupling them with the drive plate to increase the transmission stroke and contact length. This not only reduces the contact internal resistance, but also enables it to withstand the electric repulsion force of large currents, thus enabling the circuit breaker electrical connection to obtain better contact performance. This invention has the characteristics of high reliability, low energy consumption, long life, and excellent temperature rise performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the conventional structure of a circuit breaker electrical connection device involved in this utility model; Figure 2 This is an assembly diagram of an electrical connection transmission device for a circuit breaker involved in this utility model; Figure 3 This is a schematic diagram of the closed state of the electrical connection component of a circuit breaker electrical connection transmission device according to this utility model; Figure 4 This is a schematic diagram of the open state of the electrical connection component of a circuit breaker electrical connection transmission device according to this utility model. Figure 5 This is a schematic diagram of the structure of the rotating shaft assembly of a circuit breaker electrical connection transmission device involved in this utility model; Figure 6 This is a schematic diagram of the structure of the drive board of a circuit breaker electrical connection transmission device involved in this utility model; Figure 7 This is a schematic diagram of the cantilever structure of a circuit breaker electrical connection transmission device involved in this utility model; Figure 8 This is a schematic diagram of the structure of a gear in a circuit breaker electrical connection transmission device according to this utility model; Figure 9This is a schematic diagram of the structure of the drive plate assembly of the isolation position of the circuit breaker electrical connection transmission device involved in this utility model; Figure 10 This is a schematic diagram of the drive plate assembly for the test position of a circuit breaker electrical connection transmission device according to this utility model; Figure 11 This is a schematic diagram of the drive plate assembly for the connection position of an electrical connection transmission device for a circuit breaker, as described in this utility model. Figure 12 This is a schematic diagram of the drive rod drive of the drive board assembly of a circuit breaker electrical connection transmission device according to this utility model; Figure 13 This is a schematic diagram of the position signal component of a circuit breaker electrical connection transmission device according to this utility model; Figure 14 This is a schematic diagram of the structure of the indicator drive component of a circuit breaker electrical connection transmission device involved in this utility model; Figure 15 This is a schematic diagram of the structure of the electrical connection assembly of a circuit breaker electrical connection transmission device according to this utility model; Figure 16 This is a schematic diagram of the structure of the second insulating plate of a circuit breaker electrical connection transmission device involved in this utility model; Figure 17 This is a schematic diagram of the opening linkage of an electrical connection transmission device for a circuit breaker, as described in this utility model. Figure 18 This is a schematic diagram showing the cooperation between the drive board assembly and the signal position assembly in Embodiment 2 of this utility model; Figure 19 This is a schematic diagram of the drive board assembly in Embodiment 2 of this utility model; Figure 20 This is a schematic diagram of the structure of the signal position component in Embodiment 2 of this utility model; Figure 21 This is a partial structural diagram of the circuit breaker electrical connection transmission device according to Embodiment 2 of this utility model. Figure 1 ; Figure 22 This is a partial structural diagram of the circuit breaker electrical connection transmission device according to Embodiment 2 of this utility model. Figure 2 ; Marker explanation: Electrical connection assembly 1, first insulating plate 101, second insulating plate 102, insulating base 103, electrical connection port 104, connection hole 1011, fixing hole 1012, first driving section 1021, through hole 1022, second driving section 1023, guide hole 1024, driving cavity 1025.

[0018] The rotating shaft assembly 2 includes a shaft 201, a cantilever 202, a drive wheel 203, a first contact section 2021, and a drive gear 2031.

[0019] Door opening linkage 3, first driving edge 301, first contact feature 302, second contact feature 303, rotating hole 304, second driving edge 305.

[0020] Skateboard component 4, support feature 401.

[0021] Position signal assembly 5, signal fixing housing 501, micro switch 502, mounting cavity 5011, fixing base 5012, signal contact 5021, first micro switch 51, second micro switch 52.

[0022] The drive plate assembly 6 includes an indicator drive component 601, a trigger protrusion 6011, a drive rod 602, a rolling element 603, a connecting seat 604, a drive plate 605, a limiting plate 606, a horizontal plate 6051, a contact groove 60511, a vertical section 6052, a drive hole 60521, a first trigger protrusion 6012, a second trigger protrusion 6013, and a thrust bearing 607.

[0023] Main body busbar 7. Base plate 8, bending support plate 801, bending plate 802. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0025] Example 1 Figure 2 As shown, this embodiment of a circuit breaker electrical connection drive device includes an electrical connection assembly 1, a rotating shaft assembly 2, an opening linkage 3, a sliding plate assembly 4, a position signal assembly 5, a drive plate assembly 6, and a main body busbar 7. The electrical connection assembly 1 is located at the rear of the drive device, the rotating shaft assembly 2 and the drive plate assembly 6 are located at the bottom of the drive device, and the opening linkage 3 and the sliding plate assembly 4 are located on the left and right sides of the drive device. In specific applications of the circuit breaker electrical connection drive device, the electrical connection assembly 1 electrically connects several circuit breaker main body busbars 7 according to the needs of the circuit breakers connected to the power distribution system. Figure 2The circuit breaker electrical connection drive device shown is used in a three-phase circuit breaker, with incoming and outgoing busbars 7 arranged vertically on each phase, resulting in 6 sets of busbars 7, each corresponding to the electrical connection port 104 of the electrical connection assembly 1. The number of busbars 7 will differ for circuit breakers with other phases. When the circuit breaker busbar 7 enters the electrical connection port 104, the circuit breaker is electrically connected to the electrical connection assembly 1; when the circuit breaker busbar 7 disengages from the electrical connection port 104, the circuit breaker is disconnected from the electrical connection assembly 1. Figure 3 As shown, the main busbar 7 and the electrical connection assembly 1 are in an isolated position; Figure 4 As shown, the main busbar 7 and the electrical connection assembly 1 are in the connected position. The circuit breaker is not in... Figures 1-4 Draw it out in the middle.

[0026] Figure 5 As shown, the rotating shaft assembly 2 includes a shaft 201, cantilever 202, and drive wheel 203. The shaft 201 is a long, narrow shaft, and its cross-section can be circular, square, or other shapes as needed. Several cantilever 202s and drive wheels 203 are fixed on the shaft 201. The number of cantilever 202s and drive wheels 203 varies depending on the size of the driven load, but is at least one. The larger the driven load, the more cantilever 202s and drive wheels 203 are required.

[0027] Figure 7 As shown, the cantilever 202 is a circular piece, and the cantilever 202 is provided with a plurality of first contact segments 2021, which are distributed on the entire circular edge of the cantilever 202.

[0028] Figure 8 As shown, the drive wheel 203 is a circular disc, and the drive wheel 203 is provided with a plurality of drive teeth 2031, which are distributed on the entire circular edge of the drive wheel 203.

[0029] Figures 9-12 As shown, the drive plate assembly 6 includes an indicator drive element 601, a drive rod 602, a rolling element 603, a connecting seat 604, a drive plate 605, and a limiting plate 606. The connecting seat 604 is fixed to the drive plate 605. The drive rod 602 rotatably passes through the connecting seat 604 and is coupled to the connecting seat 604. When the drive rod 602 rotates, it drives the connecting seat 604 and the drive plate 605 to move together in the horizontal direction. Figure 12 As shown, a rolling element 603 is rotatably mounted on the connecting seat 604. The rolling element 603 contacts the limiting plate 606, so that the driving plate 605 moves in the horizontal direction and there is smooth rolling friction between it and the limiting plate 606.

[0030] Figure 6As shown, the drive plate 605 is an L-shaped plate. A vertical section 6052 is provided on the side of the drive plate 605 near the drive rod 602, and a drive hole 60521 is provided in the middle of the vertical section 6052. A connecting seat 604 is fixed to the drive hole 60521. The drive rod 602 rotatably passes through the drive hole 60521 and couples with the connecting seat 604. When the drive rod 602 rotates, it drives the connecting seat 604 and the drive plate 605 to move together in the horizontal direction. An indicator drive element 601 is fixed to one side of the vertical section (6052). Figure 14 As shown, the indicating drive component 601 has a trigger protrusion 6011 on the side facing the position signal component 5. The drive plate 605 has a horizontal plate 6051 facing the electrical connection component 1, and the horizontal plate 6051 has several rows of contact grooves 60511. The row positions of the contact grooves 60511 correspond to the cantilever 202, the width of the contact grooves 60511 is greater than the thickness of the cantilever 202, the spacing between adjacent contact grooves 60511 matches the first contact segment 2021, and the number of contact grooves 60511 in each row is greater than or equal to the number of first contact segments 2021 on the corresponding cantilever 202. When the drive plate 605 moves horizontally, the contact grooves 60511 contact and couple with the first contact segments 2021 on the cantilever 202, driving the rotating shaft assembly 2 to rotate. When the rotating shaft assembly 2 rotates, it drives the circuit breaker and its main busbar 7 to move, realizing the connection and isolation between the main busbar 7 and the electrical connection component 1. Since the number of contact slots 60511 in each row is greater than or equal to the number of first contact segments 2021 on the corresponding cantilever 202, the drive plate 605 can drive the rotating shaft assembly 2 to rotate more than 360 degrees. The transmission distance is longer than the traditional distance, the electrical connection contact length is longer, the contact is better, and the product reliability, energy consumption, lifespan, temperature rise and other performance are significantly improved.

[0031] Figure 9 As shown, a position signal component 5 is fixed on the side near the indicator drive component 601. Figure 13As shown, the position signal assembly 5 includes a signal fixing housing 501 and a micro switch 502. The lower part of the signal fixing housing 501 is a fixing base 5012, and the upper part is a recessed mounting cavity 5011. The signal fixing housing 501 is fixed to the side of the drive plate 605 where the indicating drive element 601 is mounted. The mounting cavity 5011 of the signal fixing housing 501 faces the drive plate 605. The signal fixing housing 501 is arranged at the corresponding connection, testing, and isolation positions on the drive plate 605. The micro switch 502 is fixed inside the mounting cavity 5011, and the signal contact 5021 on the micro switch 502 faces the drive plate 605. When the indicator drive 601 moves with the drive plate 605 to the designated position, the trigger protrusion 6011 contacts the signal contact 5021 on the micro switch 502 and reports the position signal; when the indicator drive 601 moves with the drive plate 605 away from the designated position, the trigger protrusion 6011 gradually disengages from the signal contact 5021 on the micro switch 502 and reports the disengagement signal. Figure 9 As shown, when the driver board 605 reaches the isolation position, the position signal component 5 at the isolation position reports an arrival signal; Figure 10 As shown, when the drive board 605 reaches the test position, the position signal component 5 at the test position reports the arrival signal; Figure 11 As shown, when the driver board 605 reaches the connection position, the position signal component 5 at the connection position reports an arrival signal.

[0032] Figure 15 As shown, the electrical connection assembly 1 includes a first insulating plate 101, a second insulating plate 102, and an insulating base 103. The first insulating plate 101 is fixed to the insulating base 103. The first insulating plate 101 has a plurality of connection holes 1011, the position, size, and number of which correspond to the main body busbar 7. The connection holes 1011 are through holes. The second insulating plate 102 is located between the first insulating plate 101 and the insulating base 103.

[0033] Figure 16 As shown, a first driving section 1021 and a second driving section 1023 are provided on the left and right sides of the second insulating plate 102, and a driving cavity 1025 is provided between the first driving section 1021 and the second driving section 1023. The second insulating plate 102 has several through holes 1022, the position and size of which correspond to the main body busbar 7. The second insulating plate (102) has an elongated U-shaped guide hole 1024, which is vertical. The second insulating plate 102 can move vertically along the guide hole 1024.

[0034] Figures 3-4As shown, the sliding plate assembly 4 is provided with a protruding support feature 401, and the sliding plate assembly 4 moves together with the circuit breaker and the main busbar 7 in the horizontal direction.

[0035] Figure 17 As shown, the door opening link 3 is provided with a rotating hole 304, through which the door opening link 3 can be rotatably installed. The door opening link 3 has a first contact feature 302 and a second contact feature 303 at one end near the support feature 401, with a smooth transition between the first contact feature 302 and the second contact feature 303. The door opening link 3 has a first driving edge 301 and a second driving edge 305 respectively located on its upper and lower sides near the electrical connection assembly 1. The support feature 401 contacts the first contact feature 302 and the second contact feature 303, driving the door opening link 3 to rotate. The door opening link 3 is coupled to the first driving segment 1021 on the second insulating plate 102 through the first driving edge 301, and the second driving edge 305 on the door opening link 3 is coupled to the second driving segment 1023 on the second insulating plate 102, thereby driving the second insulating plate 102 to move in the vertical direction.

[0036] Figure 3 As shown, the support feature 401 on the sliding plate assembly 4 is separated from the door opening link 3. At this time, the second driving edge 305 on the door opening link 3 is in contact with the second driving section 1023 on the second insulating plate 102. The through hole 1022 on the second insulating plate 102 is not aligned with the connection hole 1011 on the first insulating plate 101. The electrical connection assembly 1 is in a closed state. At this time, the main body busbar 7 cannot enter the electrical connection assembly 1 to achieve connection. Figure 4 As shown, the support feature 401 on the sliding plate assembly 4 contacts the second contact feature 303 of the door opening link 3, pushing the door opening link 3 to rotate. The first driving edge 301 of the door opening link 3 contacts the first driving section 1021 on the second insulating plate 102, pushing the second insulating plate 102 to move vertically along the guide hole 1024, so that the through hole 1022 on the second insulating plate 102 is aligned with the connection hole 1011 on the first insulating plate 101. The electrical connection assembly 1 is in the open state, and the main body busbar 7 can enter the electrical connection assembly 1 to achieve connection.

[0037] Example 2 This embodiment provides a circuit breaker electrical connection drive device. The circuit breaker electrical connection drive device in this embodiment is basically the same as the circuit breaker electrical connection drive device in Embodiment 1 in terms of structure and working principle, with the only difference being: like Figures 18-20As shown, in actual production, circuit breaker electrical connection drive devices are divided into different specifications according to the current size. For circuit breaker electrical connection drive device products with different current sizes, most of their structures are the same. The only difference is that the position of the drive board 605 is different when the position signal component 5 is triggered. Specifically, circuit breaker electrical connection drive devices are divided into specifications with current <2000A and specifications with current ≥2000A according to the current size. Therefore, in this embodiment, two sets of position signal components 5 (a first micro switch 51 and a second micro switch 52, respectively) are provided, and a first trigger protrusion 6012 and a second trigger protrusion 6013 are provided on the side of the indicating drive member 601 facing the position signal component 5. By making the positions of the first trigger protrusion 6012 and the second trigger protrusion 6013 different, the position of the drive plate 605 when the position signal component 5 is triggered is changed; the first trigger protrusion 6012 and the second trigger protrusion 6013 are along the edge of the indicating drive member 601. The drive board 605 is spaced apart along its thickness direction, and the first trigger protrusion 6012 and the second trigger protrusion 6013 are spaced apart along the length direction of the drive board 605. Specifically, when the first trigger protrusion 6012 triggers the first micro switch 51, the drive board 605 is positioned where the current < 2000A specification requires the drive board 605 to be positioned; when the second trigger protrusion 6013 triggers the second micro switch 52, the drive board 605 is positioned where the current ≥ 2000A specification requires the drive board 605 to be positioned.

[0038] It is worth noting that in actual production, the first triggering protrusion 6012 can trigger the signal contact 5021 of the micro switch 502 in the first micro switch 51, or the second triggering protrusion 6013 can trigger the signal contact 5021 of the micro switch 502 in the second micro switch 52. The two conditions are ORed, meaning that satisfying either one is sufficient. In this embodiment, the signal fixing housing 501 is provided with mounting cavities 5011 corresponding to the first micro switch 51 and the second micro switch 52, respectively. By changing the mounting position or orientation of the fixing base 5012, the first triggering protrusion 6012 can trigger the signal contact 5021 of the micro switch 502 in the first micro switch 51, or the second triggering protrusion 6013 can trigger the signal contact 5021 of the micro switch 502 in the second micro switch 52.

[0039] In addition, refer to Figure 22In the first embodiment, the two ends of the shaft 201 are suspended, which is equivalent to a cantilever beam. This makes the shaft 201 prone to bending after long-term actual use. In this embodiment, a bending support plate 801 is provided on the base plate 8 to support the shaft 201. The bending support plate 801 is perpendicular to the base plate 8, and the bending support plate 801 has a semi-circular notch corresponding to the shaft 201. The shaft 201 rotates with the semi-circular notch. By supporting the shaft 201 near both ends with the bending support plate 801, the shaft 201 is no longer prone to bending, which can improve the stability and service life during use. Moreover, this method of adding the bending support plate 801 only requires bending a part of the base plate 8 by 90° to form the bending support plate 801, which is low in cost.

[0040] Reference Figure 21 In this embodiment, to improve operational stability, the drive rod 602 passes through the bent plate 802 at the end of the base plate 8, and the drive rod 602 rotatably engages with the bent plate 802. Two thrust bearings 607 are fixedly sleeved on the drive rod 602 on both sides of the bent plate 802, and the two thrust bearings 607 are fixedly connected to the bent plate 802 respectively. The thrust bearings 607 can withstand the axial force generated by the drive rod 602 during operation, ensuring that the axial force of the drive rod 602 is effectively transmitted and preventing axial movement of the drive rod 602, thereby improving the stability of the driving process.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A circuit breaker electrical connection transmission device, comprising an electrical connection assembly (1), a rotating shaft assembly (2), an opening linkage (3), a sliding plate assembly (4), a position signal assembly (5), a drive board assembly (6), and a main body busbar (7); The drive plate assembly (6) is coupled to the rotating shaft assembly (2). The drive plate assembly (6) drives the rotating shaft assembly (2) to rotate, and the rotating shaft assembly (2) drives the main body busbar (7) to move, thereby implementing connection or isolation with the electrical connection assembly (1). The rotating shaft assembly (2) includes a shaft (201), a cantilever (202), and a drive wheel (203); The cantilever (202) and drive wheel (203) are fastened to the shaft (201); Its features are, The cantilever (202) is a circular piece, and the cantilever (202) is provided with a plurality of first contact segments (2021), which are distributed on the entire circular edge of the cantilever (202); The drive wheel (203) is a circular piece, and the drive wheel (203) is provided with a plurality of drive teeth (2031), which are distributed on the entire circular edge of the drive wheel (203); the drive plate assembly (6) includes an indicator drive component (601), a drive rod (602), a rolling component (603), a connecting seat (604), a drive plate (605), and a limiting plate (606); The connecting seat (604) is fixed on the drive plate (605); The drive rod (602) rotatably passes through the connecting seat (604), the drive rod (602) is coupled to the connecting seat (604), and the drive rod (602) rotates to drive the connecting seat (604) and the drive plate (605) to move together in the horizontal direction; The rolling element (603) is rotatably mounted on the connecting seat (604), and the rolling element (603) is in contact with the limiting plate (606); The position signal component (5) includes a first micro switch (51) and a second micro switch (52). The indicator drive member (601) is provided with a first trigger protrusion (6012) and a second trigger protrusion (6013) on the side facing the position signal component (5). The first trigger protrusion (6012) and the second trigger protrusion (6013) are distributed at intervals along the thickness direction of the drive plate (605) on the indicator drive member (601), and the first trigger protrusion (6012) and the second trigger protrusion (6013) are distributed at intervals along the length direction of the drive plate (605). The first trigger convex (6012) can trigger the signal contact (5021) of the micro switch (502) in the first micro switch (51), or the second trigger convex (6013) can trigger the signal contact (5021) of the micro switch (502) in the second micro switch (52).

2. The circuit breaker electrical connection transmission device according to claim 1, characterized in that, The drive board (605) is an L-shaped board; The drive plate (605) has a vertical section (6052) on one side near the drive rod (602), and a drive hole (60521) is provided in the middle of the vertical section (6052). The drive rod (602) can rotatably pass through the drive hole (60521). An indicator drive element (601) is fixed on one side of the vertical segment (6052); The drive plate (605) is arranged with a horizontal plate (6051) in the horizontal direction facing the electrical connection assembly (1). The horizontal plate (6051) is provided with a plurality of columns of contact grooves (60511). The column positions of the contact grooves (60511) correspond to the cantilever (202). The width of the contact grooves (60511) is greater than the thickness of the cantilever (202). The spacing between adjacent contact grooves (60511) matches the first contact segment (2021). The number of contact grooves (60511) in each column is greater than or equal to the number of the first contact segments (2021) on the corresponding cantilever (202).

3. The circuit breaker electrical connection transmission device according to claim 1, characterized in that, The electrical connection assembly (1) includes a first insulating plate (101), a second insulating plate (102), and an insulating base (103); The first insulating plate (101) is fixed on the insulating base (103). The first insulating plate (101) is provided with a plurality of connecting holes (1011). The position, size and number of the connecting holes (1011) correspond to the main body busbar (7). The connecting holes (1011) are through holes. The second insulating plate (102) is located between the first insulating plate (101) and the insulating base (103), and the second insulating plate (102) is movable in the vertical direction.

4. The circuit breaker electrical connection transmission device according to claim 3, characterized in that, The second insulating plate (102) is provided with a first driving section (1021) and a second driving section (1023) on its left and right sides, and a driving cavity (1025) is provided between the first driving section (1021) and the second driving section (1023); The second insulating plate (102) is provided with a plurality of through holes (1022), the position and size of which correspond to the main body busbar (7); The second insulating plate (102) is provided with a long U-shaped, vertical guide hole (1024).

5. The circuit breaker electrical connection transmission device according to claim 1, characterized in that, It also includes a base plate (8), on which a bent support plate (801) for supporting the shaft (201) is provided. The bent support plate (801) is perpendicular to the base plate (8), and the bent support plate (801) is provided with a semi-circular notch corresponding to the shaft (201). The shaft (201) is rotatably engaged with the semi-circular notch.

6. The circuit breaker electrical connection transmission device according to claim 5, characterized in that, The drive rod (602) passes through the bent plate (802) at the end of the base plate (8), and the drive rod (602) is rotatably engaged with the bent plate (802). Two thrust bearings (607) are fixedly sleeved on the drive rod (602) on both sides of the bent plate (802), and the two thrust bearings (607) are fixedly connected to the bent plate (802) respectively.

Images