Drive pole of a circuit breaker and circuit breaker

Abstract

The drive pole of the circuit breaker comprises a drive pole shell, a drive mechanism and a transmission mechanism, the drive mechanism drives the automatic opening and closing of the circuit breaker pole through the transmission mechanism, the transmission mechanism comprises at least two gear wheels which are connected in sequence; the drive pole further comprises a moving mechanism, the gear wheel of the transmission mechanism driven by the moving mechanism is a second gear wheel, and the moving mechanism can drive the second gear wheel to move to a position where the second gear wheel is disengaged from the remaining gear wheels of the transmission mechanism. The circuit breaker comprises a circuit breaker pole and a drive pole. The drive pole of the circuit breaker and the circuit breaker of the present application have at least two gear wheels which are connected in sequence in the transmission mechanism connected in transmission between the drive mechanism and the circuit breaker pole, by additionally arranging the moving mechanism, when the gear wheels are stuck, the moving mechanism can be operated to drive one gear wheel in the transmission mechanism to move to be disengaged from the remaining gear wheels, so that the circuit breaker can be normally opened and closed, the problem that the circuit breaker cannot be normally opened and closed after the gear wheels are stuck is solved, and the reliability and safety of the circuit breaker are improved.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliances, and more specifically to a circuit breaker drive pole and a circuit breaker. Background Technology

[0002] Low-voltage circuit breakers are crucial power distribution and protection devices in power systems. They can be used to distribute electrical energy and protect lines and power equipment from overload and short circuits. They can also be used for infrequent line switching and infrequent motor starting.

[0003] With the rapid development of power automation technology, intelligent low-voltage circuit breakers, with their intelligent functions such as remote control, status monitoring, and fault diagnosis, have gradually become the mainstream product in low-voltage power distribution systems. In the automatic control of circuit breakers, the gear transmission mechanism is a key component for realizing the automatic closing and opening actions of the circuit breaker. Through the precise meshing and transmission of gears, the driving power is transmitted to the operating mechanism of the circuit breaker to complete the closing and opening operations. However, in actual operation, the gear transmission mechanism is affected by many factors, such as gear wear caused by long-term operation, increased meshing resistance due to poor lubrication, foreign objects entering the gear meshing pair, and manufacturing and assembly precision errors. These factors can all lead to gear jamming. Once the gear transmission mechanism jams, the circuit breaker will be unable to close or open, posing a significant threat to the safe and stable operation of the power system.

[0004] Currently, existing circuit breaker designs lack adequate solutions to address the problem of gear drive mechanism jamming. Some products attempt to prevent gear jamming by improving gear meshing precision, but this method cannot completely eliminate the jamming phenomenon, nor can it solve the problem of the circuit breaker failing to open and close normally after gear jamming. Summary of the Invention

[0005] The purpose of this invention is to overcome at least one defect of the prior art and to provide a driving pole of a circuit breaker and a circuit breaker.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The driving pole of the circuit breaker includes a driving pole housing, a driving mechanism, and a transmission mechanism that is connected between the driving mechanism and the circuit breaker pole. The driving mechanism drives the circuit breaker pole to automatically open and close through the transmission mechanism. The transmission mechanism includes at least two gears that are meshed in sequence. The driving pole also includes a moving mechanism. The gear driven by the moving mechanism in the transmission mechanism is a second gear. The moving mechanism can drive the second gear to a position that is disengaged from the other gears in the transmission mechanism.

[0008] Optionally, the moving mechanism includes a pull rod, an operating structure, and a transmission structure connecting the pull rod and the operating structure. The pull rod is movable along a first direction to drive a second gear. The circuit breaker has an operating side on one side in the second direction. The operating structure extends at least partially out of the operating side of the drive housing. The first direction and the second direction are perpendicular to each other.

[0009] Optionally, the pull rod includes a pull rod body and a pulling part disposed on the pull rod body. The center of the second gear is provided with a gear rotation hole that cooperates with the pull rod body. The second gear is rotatably sleeved on the pull rod body through the gear rotation hole. The pull rod acts on the second gear through the pulling part, driving the second gear to move along the first direction.

[0010] Optionally, the transmission structure includes a rotatably mounted lever, the middle of which is rotatably connected to the drive pole housing, and the rotation center of the lever is set along a third direction. The two ends of the lever are respectively connected to the operating structure and the pull rod transmission; the first direction, the second direction, and the third direction are perpendicular to each other.

[0011] Optionally, the operating structure is a slider that slides along a first direction, one end of the slider in a second direction is located inside the drive pole housing and is hinged to a lever, and the other end of the slider in the second direction extends out of the operating side of the drive pole housing.

[0012] Optionally, the slider has a hinge groove at one end in the drive pole housing in the second direction that is hinged to the lever. One end of the lever is hinged in the hinge groove. The hinge groove has an avoidance notch on one side in the first direction and a pushing part on the other side.

[0013] The driving pole also includes a second elastic element, which is connected to the lever. When the slider acts on the lever through the pushing part to drive the lever to rotate, the lever drives the second elastic element to store energy. When the second elastic element releases energy to drive the lever to rotate and reset, the lever acts on the pushing part to drive the slider to slide and reset.

[0014] Optionally, a limiting member is also included, which is detachably mounted on the drive electrode housing and cooperates with the slider to limit the slider to a position where it cannot drive the second elastic element to store energy.

[0015] Optionally, the drive electrode housing is provided with a slide groove that cooperates with the slider. The limiting member is detachably installed in the slide groove. The slider is located in the slide groove, and its upper limit in the first direction is located between one side of the slide groove and one end of the limiting member. The other end of the limiting member abuts against the other side of the slide groove.

[0016] Optionally, the limiting member has an operating notch at the end away from the slider.

[0017] Optionally, the pull rod body is provided with a buckle, the buckle has a locking slot, and is fixedly sleeved on the pull rod body through the locking slot. The second gear is located between the pulling part and the buckle in the first direction and is limitedly engaged with the buckle.

[0018] Optionally, the pull rod body is provided with a pull rod limiting groove corresponding to the buckle, and the upper limit of the buckle in the first direction is located in the pull rod limiting groove.

[0019] Optionally, the gears of the transmission mechanism include a first gear, a second gear, and a third gear that are meshed together in sequence. The rotation centers of the first gear, the second gear, and the third gear are respectively arranged along a first direction and are parallel to each other and spaced apart.

[0020] A circuit breaker, including circuit breaker poles and the drive poles of any one of the circuit breakers described above.

[0021] Optionally, the circuit breaker pole includes an operating handle and an operating mechanism, wherein the operating handle is used to drive the operating mechanism to perform opening and closing actions;

[0022] The transmission mechanism of the drive pole has a third gear at the transmission output end. The transmission mechanism also includes a drive handle that is linked to the operating handle, a connecting rod that is connected between the third gear and the drive handle, a first elastic element that is connected to the third gear, a rotatably arranged drive release element, and a drive protrusion that is arranged on the third gear and eccentrically with the rotation center of the third gear.

[0023] When the third gear drives the first elastic element to store energy, it drives the drive handle to rotate through the connecting rod, so that the drive handle drives the operating handle to rotate synchronously to drive the operating mechanism to perform the closing action; when the first elastic element releases energy, the third gear drives the tripping element to rotate through the drive cam, so that the tripping element drives the operating mechanism to perform the tripping action.

[0024] The circuit breaker of the present invention has a drive pole and a circuit breaker. The transmission mechanism connected between the drive mechanism and the circuit breaker pole has at least two gears that mesh sequentially. By adding a moving mechanism, after the gears are jammed, the moving mechanism can be operated to drive one of the gears in the transmission mechanism to move to disengage from the other gears, so that the circuit breaker can open and close normally. This solves the problem that the circuit breaker cannot open and close normally after the gears are jammed, and improves the reliability and safety of the circuit breaker.

[0025] In addition, the moving mechanism adopts a tie rod that rotates relative to the second gear and moves linearly in sync. The moving mechanism has a simple structure and is compactly set with the second gear, saving space.

[0026] In addition, the operating structure of the moving mechanism is located on the operating side of the circuit breaker where the operating handle is located, which makes the layout more reasonable and convenient to operate.

[0027] In addition, a lever that rotates around the length of the circuit breaker is used, which is connected between the operating structure and the pull rod to realize the operation of the operating structure on one side of the width direction of the circuit breaker. This drives the pull rod and the second gear to move along the thickness direction of the circuit breaker, which is not only labor-saving and efficient, but also improves the convenience of operation. It also makes the layout of the moving mechanism reasonable and compact, saving space.

[0028] In addition, the setting of the limit component effectively prevents the slider from driving the second gear to disengage from the first and third gears due to misoperation, thereby improving the reliability of the circuit breaker's automatic opening and closing function. Attached Figure Description

[0029] Figure 1 This is a partial three-dimensional structural view of the circuit breaker of the present invention, showing the moving mechanism of the driving pole;

[0030] Figure 2 This is the present invention. Figure 1 A magnified view of a portion of the image;

[0031] Figure 3 This is a partial front view of the circuit breaker of the present invention, showing the transmission mechanism of the drive pole;

[0032] Figure 4 This is a partial front view of the circuit breaker of the present invention, showing the drive tripping component and the first elastic component;

[0033] Figure 5 This is a schematic diagram of the operating side structure of the circuit breaker of the present invention;

[0034] Figure 6 This is the present invention. Figure 5 A magnified view of a portion of the image;

[0035] Figure 7 This is a partial front view of the circuit breaker of the present invention, showing the moving mechanism of the driving pole;

[0036] Figure 8 This is a cross-sectional view of the circuit breaker of the present invention under normal conditions;

[0037] Figure 9 This is a schematic diagram of the circuit breaker structure when the gear disengages according to the present invention;

[0038] Figure 10 This is a schematic diagram of the structure of the second gear, pull rod, and buckle of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure of the pull rod of the present invention;

[0040] Figure 12 This is a schematic diagram of the structure of the third gear of the present invention;

[0041] Figure 13This is a schematic diagram of the buckle structure of the present invention;

[0042] Figure 14 This is a schematic diagram of the moving mechanism and transmission mechanism of the present invention;

[0043] Figure 15 This is a schematic diagram of the lever structure of the present invention;

[0044] Figure 16 This is a schematic diagram of the slider of the present invention.

[0045] The reference numerals in the attached figures include:

[0046] First direction D1; Second direction D2; Third direction D3;

[0047] Drive pole 11; Circuit breaker pole 12; Operating handle 1201; Handle linkage shaft 1202; Locking linkage shaft 1203; Operating side 13; Mounting side 14; Rail groove 15;

[0048] Drive pole housing 100; first receiving cavity 101; second receiving cavity 102; lever shaft 103; housing limiting groove 104; slide groove 105; guide rail 106;

[0049] Transmission mechanism 200; first gear 210; second gear 220; third gear 230; gear limiting shaft 231; connecting rod 240; drive handle 250; first elastic element 260; drive release element 270; worm gear 280;

[0050] Moving mechanism 300; pull rod 310; pull rod body 311; pulling part 312; pull rod hinge hole 313; pull rod limiting groove 314; buckle 320; bayonet 321; connecting shaft 330; lever 340; lever rotation hole 341; lever hinge hole 342; slider 350; guide groove 351; hinge groove 352; clearance notch 353; pushing part 354;

[0051] Second elastic element 400;

[0052] Limiting component 500; operating notch 501. Detailed Implementation

[0053] The specific embodiments of the present invention are further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the description of the following embodiments.

[0054] like Figure 1As shown, the circuit breaker in this embodiment has a first direction D1, a second direction D2, and a third direction D3 in the thickness direction, width direction, and length direction, respectively. That is, the first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other. One side of the circuit breaker in the second direction D2 is the operating side 13, and the other side of the circuit breaker in the second direction D2 is the mounting side 14. The mounting side 14 of the circuit breaker is provided with a rail groove 15, and the circuit breaker is engaged with the rail through the rail groove 15.

[0055] The circuit breaker in this embodiment includes a circuit breaker pole 12 and a drive pole 11, which are stacked along a first direction D1. The circuit breaker pole 12 typically includes an L-pole unit and an N-pole unit. Each L-pole unit includes an operating handle 1201 and an operating mechanism (not shown in the figure). The operating handle 1201 is rotatably connected to the operating side 13 of the circuit breaker pole 12 and is used to drive the operating mechanism to perform opening and closing actions. The operating mechanism typically includes a rotating component, a trip latch and a locking latch rotatably mounted on the rotating component, which are interlocked. The operating handle 1201 drives the linkage structure formed by the trip latch, locking latch, and rotating component to rotate, thereby causing the rotating component to rotate the moving contact, causing the moving contact to contact and separate from the stationary contact, thus realizing the opening and closing of the circuit breaker. Circuit breakers typically also include protection devices for driving the operating mechanism to perform tripping actions. These protection devices can directly or indirectly drive the latch and trip latch to release the latch, separating the moving contact from the stationary contact, thus achieving fault tripping of the circuit breaker. This is existing technology and will not be elaborated further here. In this embodiment, a latch linkage shaft 1203 is linked to the latch, extending out of the circuit breaker pole 12 and into the drive pole 11.

[0056] like Figure 3-4 As shown, the driving pole 11 of the circuit breaker in this embodiment includes a driving pole housing 100, a driving mechanism (not shown in the figure), and a transmission mechanism 200 that is connected between the driving mechanism and the circuit breaker pole 12. The driving mechanism drives the circuit breaker pole 12 to automatically open and close through the transmission mechanism 200. The transmission mechanism 200 includes at least two gears that mesh sequentially. In this embodiment, the gears of the transmission mechanism 200 include a first gear 210, a second gear 220, and a third gear 230. That is, the gears of the transmission mechanism 200 located at the transmission input end, the intermediate position, and the transmission output end are the first gear 210, the second gear 220, and the third gear 230, respectively. The rotation centers of the first gear 210, the second gear 220, and the third gear 230 are respectively set along the first direction D1 and are arranged parallel to each other at intervals. Of course, in other embodiments, the transmission mechanism 200 may also have two, four, or more gears.

[0057] Circuit breakers typically include a circuit board. In this embodiment, the drive mechanism is a motor, controlled by a controller on the circuit board. This is existing technology and will not be described in detail here. The transmission mechanism 200 in this embodiment also includes a worm gear 280, which is driven by a motor and meshes with a first gear 210. The rotation center of the worm gear 280 is perpendicular to the rotation center of the first gear 210, that is, the rotation center of the worm gear 280 is set along a third direction D3.

[0058] Specifically, the transmission mechanism 200 of this embodiment also includes a drive handle 250 that is linked to the operating handle 1201 of the circuit breaker pole 12, a connecting rod 240 that is connected to the third gear 230 and the drive handle 250, a first elastic member 260 connected to the third gear 230, a rotatably arranged drive release member 270, and a drive protrusion disposed on the side of the third gear 230 facing the drive release member 270 and eccentrically disposed with respect to the rotation center of the third gear 230; the drive handle 250 is linked to the operating handle 1201 through the handle linkage shaft 1202; the drive release member 270 is respectively disposed with the drive protrusion and the locking linkage shaft 1203.

[0059] like Figure 3-4 As shown, when the motor receives a closing command, it sequentially drives the third gear 230 to rotate clockwise via the worm gear 280, the first gear 210, and the second gear 220. Simultaneously, the third gear 230 drives the first elastic element 260 to store energy and, through the connecting rod 240, drives the drive handle 250 to rotate clockwise. This causes the drive handle 250 to synchronously rotate the operating handle 1201, driving the operating mechanism to perform the closing action, thus achieving automatic closing of the circuit breaker. When the motor receives a tripping command, it sequentially drives the third gear 230 to rotate counterclockwise via the worm gear 280, the first gear 210, and the second gear 220. Simultaneously, the first elastic element 260 releases energy, and the third gear 230, through the driving cam, drives the tripping element 270 to rotate counterclockwise. This causes the tripping element 270 to drive the operating mechanism to perform the tripping action, thus achieving automatic tripping of the circuit breaker.

[0060] In this embodiment, as Figure 4 , 12 As shown, the first elastic element 260 is a torsion spring, and it is located on the same side of the third gear 230 in the first direction D1 as the drive release element 270. A gear limiting shaft 231, eccentrically positioned to the rotation center of the third gear 230, protrudes from the side of the third gear 230 facing the first elastic element 260. One end of the first elastic element 260 abuts against the gear limiting shaft 231, and the other end abuts against the drive pole housing 100. Of course, the first elastic element 260 can also be a tension spring, compression spring, leaf spring, etc.

[0061] In particular, such as Figure 7-9As shown, the drive pole 11 in this embodiment also includes a moving mechanism 300, and the gear driven by the moving mechanism 300 is the second gear 220. When the first gear 210, the second gear 220 and the third gear 230 get stuck during the circuit breaker opening and closing process, the moving mechanism 300 is manually operated so that the moving mechanism 300 can drive the second gear 220 to a position that is disengaged from the other gears of the transmission mechanism 200 (i.e., the first gear 210 and the third gear 230). At this time, since the third gear 230 can rotate, the third gear 230 will not restrict the position of the drive handle 250 through the connecting rod 240, that is, the drive handle 250 can also rotate, so that the circuit breaker can be manually opened and closed normally. In this embodiment, the drive pole and the circuit breaker are connected by a transmission mechanism 200 between the drive mechanism and the circuit breaker pole 12. The transmission mechanism 200 has at least two gears that mesh with each other in sequence. By adding a moving mechanism 300, after the gears are stuck, the moving mechanism 300 can be operated to drive one of the gears in the transmission mechanism 200 to disengage from the other gears, so that the circuit breaker can open and close normally. This solves the problem that the circuit breaker cannot open and close normally after the gears are stuck, and improves the reliability and safety of the circuit breaker.

[0062] Preferably, the drive pole housing 100 has a first receiving cavity 101 and a second receiving cavity 102. The drive pole housing 100 also has a shell through hole communicating between the first receiving cavity 101 and the second receiving cavity 102. The first receiving cavity 101 is located between the second receiving cavity 102 and the circuit breaker pole 12 in the first direction D1. The transmission mechanism 200 and the drive mechanism are located in the first receiving cavity 101, and the moving mechanism 300 is located in the second receiving cavity 102. The moving mechanism 300 is located on the side of the transmission mechanism 200 away from the circuit breaker pole 12 in the thickness direction of the circuit breaker. The layout is reasonable and compact, which makes it easy to directly add the moving mechanism 300 on the basis of the original circuit breaker, and it has strong versatility and flexibility.

[0063] like Figure 1 , 7 As shown in Figure 9, the moving mechanism 300 of this embodiment includes a pull rod 310, an operating structure, and a transmission structure connecting the pull rod 310 and the operating structure. The pull rod 310 is movable along a first direction D1 to drive the second gear 220. The operating structure extends at least partially from the operating side 13 of the drive housing 100. The operating structure of the moving mechanism 300 is located on the operating side 13 of the circuit breaker where the operating handle 1201 is located, resulting in a more reasonable layout and easier operation.

[0064] The pull rod 310 in this embodiment includes a pull rod body 311 and a pulling part 312 disposed on the pull rod body 311. The second gear 220 has a gear rotation hole at its center that mates with the pull rod body 311. The second gear 220 is rotatably sleeved on the pull rod body 311 through the gear rotation hole. The pull rod 310 acts on the second gear 220 through the pulling part 312, driving the second gear 220 to move along the first direction D1. That is, the second gear 220 can rotate around the pull rod 310 and can move synchronously with the pull rod 310 along the first direction D1. The moving mechanism 300 adopts a pull rod 310 that rotates relative to the second gear 220 and moves synchronously in a straight line. The moving mechanism 300 has a simple structure and is compactly arranged with the second gear 220, saving space.

[0065] like Figure 8-10 As shown in Figure 13, in this embodiment, one end of the pull rod body 311 extends into the first receiving cavity 101 through the shell through hole. A buckle 320 and the pulling part 312 are provided on the end of the pull rod body 311 located in the first receiving cavity 101. The buckle 320 has a latch 321, through which it is fixedly sleeved onto the pull rod body 311. The second gear 220 is located between the pulling part 312 and the buckle 320 in the first direction D1, and is in a limiting engagement with the buckle 320 to restrict the offset of the second gear 220 in the first direction D1, thereby improving the reliability and stability of the rotation of the second gear 220. The buckle 320 is preferably a non-closed circular structure forming the latch 321. The buckle 320 has a simple structure and is easy to install.

[0066] like Figure 10-11 As shown, in this embodiment, the pull rod body 311 located in the first receiving cavity 101 has a pull rod limiting groove 314 corresponding to the buckle 320 on one end. The upper limit of the buckle 320 in the first direction D1 is located in the pull rod limiting groove 314 to improve the connection reliability between the buckle 320 and the pull rod 310.

[0067] like Figure 1 As shown, the transmission structure of this embodiment includes a rotatably mounted lever 340. The middle part of the lever 340 is rotatably connected to the drive pole housing 100, and the rotation center of the lever 340 is set along the third direction D3. The two ends of the lever 340 are respectively connected to the operating structure and the pull rod 310. By using a lever 340 that rotates around the length direction of the circuit breaker and is connected between the operating structure and the pull rod 310, the operating structure on one side of the width direction of the circuit breaker is operated. The pull rod 310 and the second gear 220 are driven to move along the thickness direction of the circuit breaker. This is both labor-saving and efficient, improving the convenience of operation, and also makes the layout of the moving mechanism 300 reasonable and compact, saving space.

[0068] In this embodiment, as Figure 2 , 15As shown, the lever 340 has a lever rotation hole 341 in the middle. The second receiving cavity 102 of the drive pole housing 100 has a lever shaft 103 that cooperates with the lever rotation hole 341. The lever 340 is rotatably connected to the lever shaft 103 through the lever rotation hole 341. The axis of the lever rotation hole 341 and the lever shaft 103 coincide, serving as the rotation center of the lever 340.

[0069] like Figure 1 , 14 As shown in Figure -15, the transmission structure of this embodiment also includes a connecting shaft 330. One end of the pull rod 310 located within the second receiving cavity 102 is provided with a pull rod hinge hole 313 that is hinged to the connecting shaft 330. The lever 340 is provided with a lever hinge hole 342 that is hinged to the connecting shaft 330. Both ends of the connecting shaft 330 are respectively hinged within the pull rod hinge hole 313 and the lever hinge hole 342. Of course, in other embodiments, the connecting shaft 330 and the lever 340 can also be integrally connected.

[0070] like Figure 1-2 As shown, the operating structure of this embodiment is a slider 350 that slides along the first direction D1. The operating side 13 of the drive housing 100 is provided with a groove 105 that cooperates with the slider 350. The middle part of the slider 350 is located within the groove 105, and the middle part of the slider 350 has guide grooves 351 on both sides in the third direction D3. Guide rails 106, which are slidably inserted into the guide grooves 351, are provided on both sides of the groove 105 in the third direction D3. The guide rails 106 cooperate with the guide grooves 351 to guide the slider 350. One end of the slider 350 in the second direction D2 is located within the drive housing 100 and hinged to the lever 340. The other end of the slider 350 in the second direction D2 extends out of the operating side 13 of the drive housing 100 for operation. In this embodiment, the slider 350 and the lever 310 move in opposite directions, that is, the slider 350 and the lever 310 move in two opposite directions in the first direction D1. The operating structure of this embodiment uses a sliding slider 350, which allows for a simpler design to enclose the slide groove 105 when the circuit breaker is in a normal, gear-free state, thereby improving the sealing and aesthetics of the drive housing 100. Alternatively, in other embodiments, one end of the lever 340 can extend out of the operating side 13 of the drive housing 100, eliminating the need for an additional slider 350.

[0071] Specifically, such as Figure 2 , 16 As shown, in this embodiment, the slider 350 is provided with a hinge groove 352 at one end located inside the drive pole housing 100 in the second direction D2, which is hinged to the lever 340. One end of the lever 340 is hinged in the hinge groove 352. The hinge groove 352 is provided with an avoidance notch 353 on one side in the first direction D1, and a pushing part 354 on the other side.

[0072] The driving pole 11 in this embodiment also includes a second elastic element 400, which is connected to the lever 340. When the slider 350 acts on the lever 340 through the pushing part 354 to drive the lever 340 to rotate, the lever 340 drives the second elastic element 400 to store energy. When the second elastic element 400 releases energy and drives the lever 340 to rotate and reset, the lever 340 drives the slider 350 to slide and reset through the pushing part 354. The slider 350 is hinged to the lever 340 using a hinge groove 352. The hinge groove 352 is open on one side (avoidance notch 353) and closed on the other side (pushing part 354) in the sliding direction of the slider 350. The structure is simple and does not require high precision, making it easy to install.

[0073] Of course, in other embodiments, the second elastic element 400 can also be connected to the slider 350. While the slider 350 drives the second elastic element 400 to store energy, it also drives the lever 340 to rotate. When the second elastic element 400 releases energy, it drives the slider 350 to slide and reset, so that the slider 350 drives the lever 340 to rotate and reset.

[0074] like Figure 2 As shown, in this embodiment, the second elastic element 400 is a torsion spring, sleeved on the lever shaft 103. One end of the second elastic element 400 is connected to the lever 340, and the other end is limitedly connected to the shell limiting groove 104 of the drive pole housing 100. Preferably, the connection between the second elastic element 400 and the lever 340 is close to the slider 350 and far from the lever hinge hole 342, reducing the operating force and improving the feel and response speed. Of course, the second elastic element 400 can also be a tension spring, compression spring, leaf spring, etc.

[0075] like Figure 5-6 As shown, the driving electrode in this embodiment also includes a limiting member 500. The limiting member 500 is detachably mounted on the driving electrode housing 100 and cooperates with the slider 350 to limit the slider 350 to a position where it cannot drive the second elastic member 400 to store energy. Figure 5 As shown, slider 350 cannot slide to the left at this time. When the circuit breaker is in its normal, gear-free state, the limit member 500 is installed on the drive housing 100 to lock slider 350, thereby locking the second gear 220 and preventing it from moving along the first direction D1. When gear jamming occurs in the circuit breaker, the limit member 500 needs to be removed first. The limit member 500 effectively prevents slider 350 from driving the second gear 220 to disengage from the first gear 210 and the third gear 230 due to misoperation, thereby improving the reliability of the circuit breaker's automatic opening and closing function.

[0076] Specifically, the limiting member 500 is detachably installed inside the slide groove 105. The upper limit of the slider 350 in the first direction D1 is located between one side of the slide groove 105 and one end of the limiting member 500, and the other end of the limiting member 500 abuts against the other side of the slide groove 105. The limiting member 500 has a simple structure and not only locks the slider 350, but also seals the slide groove 105 together with the slider 350 to improve the sealing and aesthetics of the drive electrode housing 100.

[0077] Preferably, the end of the limiting member 500 away from the slider 350 is provided with an operating notch 501. A tool such as a screwdriver is inserted into the operating notch 501 to pry the limiting member 500, thereby removing the limiting member 500 from the slide groove 105.

[0078] The working process of the moving mechanism 300 in this embodiment is as follows:

[0079] like Figure 8-9 As shown, when the circuit breaker experiences gear jamming, first remove the limiting member 500 from the slide groove 105, then move the slider 350 to the right. The slider 350 acts on the lever 340 through the pushing part 354, driving the lever 340 to rotate clockwise. While the lever 340 drives the second elastic member 400 to store energy, it also drives the pull rod 310 to move to the left through the connecting shaft 330. The pull rod 310 acts on the second gear 220 through the pulling part 312, driving the second gear 220 to move to the left synchronously until the second gear 220 disengages from the first gear 210 and the third gear 230.

[0080] When the slider 350 is released, the second elastic element 400 releases energy to drive the lever 340 to rotate counterclockwise to reset. The lever 340 drives the slider 350 to slide to the left to reset through the pushing part 354. At the same time, the lever 340 also drives the pull rod 310 to move to the right to reset through the connecting shaft 330. The pull rod 310 drives the second gear 220 to move to the right synchronously through the pulling part 312, so that the second gear 220 is reset to mesh with the first gear 210 and the third gear 230. It is worth mentioning that the circuit breaker may still be in a gear jammed state at this time.

[0081] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship conventionally placed during use. They are used only for ease of description and do not indicate that the device or element referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating relative importance.

[0082] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A drive pole (11) of a circuit breaker, comprising a drive pole housing (100), a drive mechanism, and a transmission mechanism (200) drivingly connected between the drive mechanism and the circuit breaker pole (12), wherein the drive mechanism drives the circuit breaker pole (12) to automatically open and close via the transmission mechanism (200), and the transmission mechanism (200) comprises at least two gears meshing sequentially; characterized in that: The drive pole (11) also includes a moving mechanism (300), and the gear driven by the moving mechanism (300) in the transmission mechanism (200) is a second gear (220). The moving mechanism (300) can drive the second gear (220) to a position that is disengaged from the other gears of the transmission mechanism (200). The moving mechanism (300) includes a pull rod (310), an operating structure, and a transmission structure that is connected between the pull rod (310) and the operating structure. The pull rod (310) is movably arranged along a first direction (D1) to drive a second gear (220). The circuit breaker has an operating side (13) on one side in the second direction (D2). The operating structure extends at least partially out of the operating side (13) of the drive pole housing (100). The first direction (D1) and the second direction (D2) are perpendicular to each other. The transmission structure includes a rotatably mounted lever (340), the middle part of which is rotatably connected to the drive pole housing (100), and the rotation center of the lever (340) is set along a third direction (D3). The two ends of the lever (340) are respectively connected to the operating structure and the pull rod (310); the first direction (D1), the second direction (D2) and the third direction (D3) are perpendicular to each other.

2. The driving pole (11) of the circuit breaker according to claim 1, characterized in that: The pull rod (310) includes a pull rod body (311) and a pulling part (312) provided on the pull rod body (311). The center of the second gear (220) is provided with a gear rotation hole that cooperates with the pull rod body (311). The second gear (220) is rotatably sleeved on the pull rod body (311) through the gear rotation hole. The pull rod (310) acts on the second gear (220) through the pulling part (312) to drive the second gear (220) to move along the first direction (D1).

3. The driving pole (11) of the circuit breaker according to claim 1, characterized in that: The operating structure is a slider (350) that slides along the first direction (D1). One end of the slider (350) in the second direction (D2) is located inside the drive pole housing (100) and is hinged to the lever (340). The other end of the slider (350) in the second direction (D2) extends out of the operating side (13) of the drive pole housing (100).

4. The driving pole (11) of the circuit breaker according to claim 3, characterized in that: The slider (350) has a hinge groove (352) on one end located inside the drive pole housing (100) in the second direction (D2) that is hinged to the lever (340). One end of the lever (340) is hinged in the hinge groove (352). The hinge groove (352) has an avoidance notch (353) on one side in the first direction (D1) and a push part (354) on the other side. The drive pole (11) also includes a second elastic element (400), which is connected to the lever (340). When the slider (350) acts on the lever (340) through the pusher (354) to drive the lever (340) to rotate, the lever (340) drives the second elastic element (400) to store energy. When the second elastic element (400) releases energy and drives the lever (340) to rotate and reset, the lever (340) drives the slider (350) to slide and reset through the pusher (354).

5. The driving pole (11) of the circuit breaker according to claim 4, characterized in that: It also includes a limiting member (500), which is detachably mounted on the drive pole housing (100) and cooperates with the slider (350) to limit the slider (350) to a position where it cannot drive the second elastic member (400) to store energy.

6. The driving pole (11) of the circuit breaker according to claim 5, characterized in that: The drive pole housing (100) is provided with a slide groove (105) that cooperates with the slider (350). The limiting member (500) is detachably installed in the slide groove (105). The slider (350) is located in the slide groove (105), and its upper limit in the first direction (D1) is located between one side of the slide groove (105) and one end of the limiting member (500). The other end of the limiting member (500) abuts against the other side of the slide groove (105).

7. The driving pole (11) of the circuit breaker according to claim 6, characterized in that: The limiting member (500) has an operating notch (501) on the end away from the slider (350).

8. The driving pole (11) of the circuit breaker according to claim 2, characterized in that: The pull rod body (311) is provided with a buckle (320), the buckle (320) has a slot (321), and is fixedly sleeved on the pull rod body (311) through its slot (321). The second gear (220) is located between the pulling part (312) and the buckle (320) in the first direction (D1), and is limited to cooperate with the buckle (320).

9. The driving pole (11) of the circuit breaker according to claim 8, characterized in that: The pull rod body (311) is provided with a pull rod limiting groove (314) corresponding to the buckle (320), and the buckle (320) is located in the pull rod limiting groove (314) at its upper limit in the first direction (D1).

10. The driving pole (11) of the circuit breaker according to claim 1, characterized in that: The transmission mechanism (200) includes a first gear (210), a second gear (220), and a third gear (230) that are meshed together in sequence. The rotation centers of the first gear (210), the second gear (220), and the third gear (230) are respectively set along a first direction (D1) and are arranged parallel to each other at intervals.

11. A circuit breaker, characterized in that: It includes a circuit breaker pole (12) and a drive pole (11) of the circuit breaker according to any one of claims 1-10.

12. The circuit breaker according to claim 11, characterized in that: The circuit breaker pole (12) includes an operating handle (1201) and an operating mechanism. The operating handle (1201) is used to drive the operating mechanism to perform opening and closing actions. The transmission mechanism (200) of the drive pole (11) has a third gear (230) at the transmission output end. The transmission mechanism (200) also includes a drive handle (250) that is linked to the operating handle (1201), a connecting rod (240) that is connected to the third gear (230) and the drive handle (250), a first elastic element (260) that is connected to the third gear (230), a drive release element (270) that is rotatably arranged, and a drive protrusion that is arranged on the third gear (230) and eccentrically arranged with respect to the rotation center of the third gear (230). When the third gear (230) drives the first elastic element (260) to store energy, it drives the drive handle (250) to rotate through the connecting rod (240), so that the drive handle (250) drives the operating handle (1201) to rotate synchronously to drive the operating mechanism to perform the closing action; when the first elastic element (260) releases energy, the third gear (230) drives the tripping element (270) to rotate through the drive cam, so that the tripping element (270) drives the operating mechanism to perform the tripping action.

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